CN101496667B

CN101496667B - Wheeled luggage and base-and-frame assembly therefor

Info

Publication number: CN101496667B
Application number: CN2009100098329A
Authority: CN
Inventors: 三好锐郎
Original assignee: SUWANY CO Ltd
Current assignee: SUWANY CO Ltd
Priority date: 2008-01-28
Filing date: 2009-01-24
Publication date: 2012-05-30
Anticipated expiration: 2029-01-24
Also published as: US20090188764A1; CN101496667A; JP2009201976A; JP4276695B1

Abstract

The utility model relates to a wheeled luggage and a base-and-frame assembly for the wheeled luggage. The base-and-frame assembly includes: a platform having a carriage surface for detachably carrying a separable bag thereon; a swivel caster allowing the base-and-frame assembly to travel in free directions; a hollow support tube being connected to one side of the carriage surface of the platform vertically in an upward direction; an extendable rod connected to the support tube in a self-standing manner, the rod having a grip at the upper end; and a stopper allowing the extendable rod to stop at an extended position. The platform is provided with a latitudinal reinforcement rib integrally formed below a planar carriage plate with its top face serving as the carriage surface. In a horizontal plane including such surface, the latitudinal reinforcement rib extends in a lateral direction orthogonal to the grip, protruding on a bottom face of the carriage plate. An area located below the support tube is protruded downwardly to serve as a reinforcement protrusion, with the reinforcement protrusion being integrally formed with the latitudinal reinforcement rib.

Description

Bag with caster and base frame for the same

Technical Field

The present invention relates to a bag with casters and a base frame constituting the bag, and more particularly to a bag having a handle that can be extended and retracted vertically.

Background

A bag with casters having a handle which can be pulled out has been developed and widely used. In most cases, bags of this configuration are large enough to be carried into an airplane or are larger than the airplane. The package of this structure is described in, for example, U.S. Pat. No. 4995487, Japanese patent publication No. 4-76686, Japanese patent application laid-open No. 57-179824 and Japanese patent application laid-open No. 63-131634. As shown in fig. 1, the bag disclosed in these publications is provided with two casters 41 on one side of the bottom surface. A short leg 42 is fixed to the side opposite to the caster 41. If the bag is erected vertically, the caster 41 and the foot 42 are contacted on the ground. In this state, the non-rotating leg 42 comes into contact with it, so that the bag stands vertically without moving. Further, a handle 43 is provided on the upper surface so as to be able to be pulled out in order to pull the bag and move it. The handle 43 is provided on the same side as the caster 41 because it is pulled and moved in a state where the bag is tilted.

The bag having this structure can be tilted and moved by pulling the handle 43, as shown in fig. 1. If the bag is tilted, the caster 41 contacts the ground and the foot 42 is moved away from the ground. If the handle 43 is pulled in this state, the caster 41 rotates and can be easily moved. However, the bag moved in this manner may not be usable in a narrow place or a mixed place such as an airplane. This is because, if the bag is moved by the caster 41, the lateral width of the bag becomes large, and the bag cannot freely move in a narrow passage or a mixed place between seats in the machine. If the caster 41 is no longer available, the bag needs to be lifted by hand to be moved. When lifted up by hand and moved, the movable member can be moved in the direction indicated by the arrow a in fig. 1 so that the lateral width is not widened.

The bag with casters is of a convenient construction for easy and effortless movement of the heavy bag. This is because the bag can be easily moved by the caster even if the bag is heavy. In order to overcome such a drawback, the present inventors developed a bag having a structure shown in FIG. 2 (see Japanese patent application laid-open No. Hei 10-117829). The bag of this figure has casters 341 mounted on the bottom surface of the box main body 344. The casters 341 are provided at four corners of the bottom surface so that the box main body 344 can stand upright in a vertical posture. The grip portion 343A of the handle 343 is located above the box main body 344 and at the right and left center thereof. The constructed bag does not move the bag obliquely like the bag shown in fig. 1. The bag is moved in a vertically standing posture in the direction indicated by the arrow in fig. 2. If the movement is in the direction indicated by the arrow, the lateral width can be narrowed and the movement can be performed. Therefore, the movable type solar cell has the advantage of being capable of being conveniently moved in a machine or a mixed place. Further, if a caster capable of moving in a free direction is used as the 4 casters 341, the bag can move in a free direction in a vertical posture. In the bag in the vertical posture, the weight of the bag does not act on the handle 343. Therefore, even if the bag is heavy, it can be easily moved only by pushing.

The bag of this configuration can be moved lightly and easily by 4 casters by pushing the grip portion of the handle. However, in the bag having this structure, since the handle is attached to the center, as shown in the sectional view of fig. 3, it is necessary to fix the extension bar 345 of the handle 343 inside the box main body 344. The extendable rod 345 is fixed so as to penetrate the left and right sides of the box main body 344, that is, the center in the thickness direction, in order to dispose the grip 343A at the left and right centers of the box main body 344. In the bag having this structure, the extendable rod 345 serves as a barrier, and it is difficult to effectively use the inside of the box main body 344.

The present inventors have developed a package shown in FIG. 4 (Japanese patent application laid-open No. Hei 10-137022) for the purpose of solving these disadvantages.

In this bag, the caster wheels 441 are provided at four corners of the bottom surface of the box main body 444, and the extendable rod 445 is fixed to a side surface of the box main body 444. The extendable rod 445 has a structure in which the handle 443 can be pulled out upward, and a grip 443A is provided at the upper end. The extendable rod 445 is bent in a state of being pulled out from the box main body 444 so that the hand grasping portions 443A are positioned at the left and right centers of the upper surface of the box main body 444.

In the bag having this structure, the extendable rod is fixed to the side portion, and therefore, the bag body can be made deeper inside. However, in the bag having this structure, since the extendable rod is fixed to the bag main body, the bag main body needs to have a strong structure. This is because the telescopic rod is made to stand on its own on the bag main body. The bag having this structure is not moved by pulling the extendable rod as shown in fig. 1, but is used as a walking stick or a supporter for a walker, and is pushed forward to move the bag body. Therefore, in order to make the telescopic rod firmly stand by itself on the bag main body, it is necessary to strongly reinforce the attachment portion between the bag main body and the telescopic rod. Therefore, there is a disadvantage that the structure of the bag body becomes complicated and the manufacturing cost becomes significantly high. Further, there is a disadvantage that it is difficult to reinforce the bag body to a strong structure without reducing the storage space.

The present inventors developed the package shown in fig. 5 in order to solve this drawback. The bag body 53 is detachably attached to the base frame 51 having casters 56 capable of traveling in free directions at four corners of the bottom surface of the bag. The base frame 51 includes a mounting table 52 to which a bag body 53 is attached, an extendable rod 55 which is extendable upward and has a handle 54 at its upper end, and a stopper (not shown) which holds the extendable rod 55 at an extended position and a retracted position. The mounting table 52 is provided with casters 56 at four corners. The extendable rod 55 is fixed to one side of the table 52 so as to extend upward and stand by itself. The bag body 53 is attached to a side surface of the extendable rod 55 above the table 52, and is connected to the base frame 51.

The bag with this structure cannot prevent the extendable rod 55 from falling down by the bag body 53 as in the conventional case. Therefore, the base frame 51 needs to be firmly connected to the platform 52 by the extendable rod 55. To achieve this, the base frame 51 fixes the extendable rod 55 to the corner of the platform 52, and reinforces the extendable rod 55 with the reinforcing wall 58. The reinforcing walls 58 are provided along both end edges of the table 52, and connect the extendable rod 55 to the table 52 so as not to fall down. The bag body 53 is attached to a portion of the base frame 51 surrounded by the extendable rod 55 and the reinforcing wall 58. The table 52 and the reinforcing wall 58 are integrally formed of a light metal such as plastic or aluminum.

In the bag having this structure, the extendable rod is connected to the platform via the reinforcing wall so as not to fall down. However, since the reinforcing walls are provided along both end edges of the mounting table, the bag body needs to be attached between the reinforcing walls at both ends. This is because the interval between the pair of reinforcing walls determines the width of the bag body, and therefore, the size, design, and the like of the bag placed on the placement table are limited.

The present inventors have also developed a package shown in fig. 6 in order to solve this problem. This bag includes a base frame 61 having casters 66 and a bag body 63, as in the bag of fig. 5. The difference from the bag of fig. 5 is in the position of formation of the reinforcing wall 68, and the reinforcing wall 68 of the bag of fig. 6 is provided on the lower side of the table 62. This reinforcing wall 68 is explained using fig. 7 as a bottom perspective view of the base frame 61. The reinforcing wall 68 is disposed between the casters 66 provided at the four corners of the bottom surface of the platform 62, and is configured by connecting the lateral reinforcing wall 68A and the vertical reinforcing wall 68B. The reinforcing wall 68 projects below the platform 62 to a height lower than the height of the caster 66.

In this way, the reinforcing wall 68 is provided so as to project below the platform 62, and the base-and-frame assembly 61 can be made to have a strong structure. As a result, the reinforcing wall on the upper surface side of the mounting table 62 can be omitted, and therefore, there is no space limitation on the upper surface side of the mounting table 62, and the selection range of the package main body 63 to be mounted is expanded.

However, according to the bag of fig. 6, since the casters 66 are provided at the four corners of the bottom surface of the platform 62, the reinforcing wall 68 provided on the bottom surface side of the platform 62 needs to be provided so as to avoid the mounting positions of the casters 66. Therefore, the supporting tube 67 is disposed between the casters 66, but this also restricts the installation position of the supporting tube 67 connected to the reinforcing wall 68 and extending above the platform 62. Further, the positions of the extendable rod 65 connected by inserting the support tube 67 and the handle 64 provided at the upper end of the extendable rod 65 are restricted. Therefore, when the interval between the casters 66 is small, the distance L between the extendable rods 65 is made smaller by the reinforcing walls 68 provided between the casters 66, and therefore the length of the handle 64 is also made shorter.

The handle 64 having a short grip area is difficult to grip. The side surface of the bag is forced to a narrow range, and the control of the bag becomes difficult. As a result, it is difficult to push the bag, so it is difficult to control the traveling direction of the bag. In addition, it is possible to break the balance and make the package easy to fall down.

Disclosure of Invention

The present invention has been made to further solve the above-mentioned drawbacks, and an object of the present invention is to provide a bag with casters, which reinforces a telescopic bar and facilitates the control of the movement of the bag, and a base frame constituting the bag.

The wheeled luggage has a luggage body 3 and a base frame 1 capable of carrying the luggage body 3. The base frame 1 includes: a mounting table 102 having a mounting surface 2 on which a bag body 3 is detachably mounted; a swivel caster 6 fixed to a bottom surface of the platform 102 facing the placement surface 2 and configured to freely move the base frame 1; a hollow support tube (7) which is connected to one side of the mounting surface (2) of the mounting table (102) in a self-standing manner and protrudes substantially vertically upward; an extendable rod 5 which is connected to the support tube 7 so as to be self-supporting and is extendable and retractable, and which has a handle 4 at one end; and a stopper 15 for stopping the extendable rod 5 at the extended position.

The base frame 1 is provided with two support cylinders 7 on one side of the mounting surface 2, two extendable rods 5 are connected to the two support cylinders 7, and a handle 4 is connected to the upper ends of the two extendable rods 5. The table 102 further includes a flat plate-shaped mounting plate 9 having a top surface as a mounting surface, and the support tube 7 is connected so as to extend substantially upward from one side of the mounting plate 9. The platform 102 is provided with a latitudinal reinforcement rib 112A that extends in the lateral direction, which is a direction perpendicular to the handle, and protrudes from the lower surface of the platform plate 9, integrally with the platform plate 9 in a horizontal plane including the platform surface. The latitudinal reinforcement rib 112A is formed by projecting a region located below the support tube 7 downward to form a reinforcement projection 108, and the reinforcement projection 108 is formed integrally with the latitudinal reinforcement rib 112A.

The extendable rod 5 of the base frame may be curved or inclined from one side of the mounting surface 2 toward the center in a posture in which the handle 4 is pulled up.

The above and other objects and features of the present invention will become more apparent from the detailed description of the embodiments with reference to the attached drawings.

Drawings

Fig. 1 is a perspective view showing a conventional bag with casters.

Figure 2 is a perspective view of a wheeled bag previously developed by the present inventor.

Fig. 3 is a vertical sectional view of the wheeled cart shown in fig. 2.

Figure 4 is a perspective view of another wheeled cart previously developed by the present inventor.

Figure 5 is a perspective view of another wheeled cart previously developed by the present inventor.

Figure 6 is a perspective view of another wheeled cart previously developed by the present inventor.

Fig. 7 is a bottom perspective view of the base frame of the wheeled bag shown in fig. 6.

Fig. 8 is an exploded perspective view of a bag with casters according to an embodiment of the present invention.

Fig. 9 is a side view of a wheeled case according to an embodiment of the invention.

Fig. 10 is a perspective view of the base frame shown in fig. 8.

Fig. 11 is a side view of the base frame shown in fig. 8.

Fig. 12 is a side view of another form of the base frame.

Fig. 13 is a side view of another form of the base frame.

Fig. 14A shows a top view of the base frame, and fig. 14B shows a bottom view of the base frame.

Fig. 15 is a perspective view of the base frame.

Fig. 16 is an exploded perspective view of the bag with casters according to embodiment 2.

Fig. 17 is a perspective view of a bag with casters according to embodiment 2.

Fig. 18 is a perspective view of a bag with casters according to embodiment 2.

Fig. 19 is a side view of the wheeled luggage according to embodiment 3.

Fig. 20 is an enlarged sectional view showing an example of the stopper of the extendable rod.

Fig. 21 is an enlarged cross-sectional view showing a state where the 2 nd stopper of the extendable rod shown in fig. 18 is released.

Fig. 22 is an enlarged sectional view showing a state where the 1 st stopper of the extendable rod shown in fig. 18 is released.

Fig. 23 is a partially enlarged perspective view of the bag with casters according to embodiment 4.

Fig. 24 is a bottom perspective view showing the bag with casters.

Fig. 25 is a bottom perspective view showing the bag with casters.

Fig. 26 is a partial rear view showing the bag with casters.

Fig. 27 is a partial side view showing a bag with casters.

Fig. 28 shows a bottom view of the mounting table.

Fig. 29 is a bottom view of the mounting table.

Fig. 30 is a bottom view of the mounting table.

Fig. 31 shows a bottom view of the mounting table.

Fig. 32 shows a bottom view of the mounting table.

Detailed Description

The following describes in detail a bag with casters and a base frame used for the bag with casters according to the present invention, but embodiments 1 to 3 show a reference example of the present invention, and an example of the present invention is shown in embodiment 4.

(embodiment mode 1)

Fig. 8 is an exploded perspective view of a bag with casters 100 according to embodiment 1 (hereinafter, also referred to simply as a "bag"). Fig. 9 is a side view showing a state where the pack main body 3 is mounted on the mounting surface 2. The caster-equipped bag 100 is mainly composed of a bag main body 3 and a base frame 1 capable of transporting the bag main body 3. The base frame 1 has a mounting surface 2 on which a bag body 3 is detachably mounted. At the four corners of the bottom surface of the mounting surface 2, swivel casters 6 are provided so as to be able to travel in free directions. The base-and-frame assembly 1 further includes a hollow support tube 7 that is erected substantially perpendicularly to the mounting surface 2 in an upward direction in at least a partial region on one side of the rectangular mounting surface 2. An extendable rod 5 that can be extended and retracted vertically is inserted into the hollow of the support tube 7, and the extendable rod 5 is connected to the support tube 7 so as to be self-standing in an upwardly extending posture. The base-and-frame assembly 1 further includes a stopper 15 (see fig. 20) for stopping the extendable rod 5 at the extended position. Further, a handle 4 is provided at the upper end of the extendable rod 5, and a carrier can move the bag 100 in a desired direction by holding the handle 4. Further, the package 100 has an advantage that the package body 3 can be easily replaced, although the details will be described later. When various kinds of bag bodies 3 are mounted on the base frame 1, the bag bodies 3 are placed on the mounting surface 2 and fixed in a posture in which the bag bodies 3 are along the side surfaces of the extendable rods 5.

In the examples of fig. 8 and 9, the planar shape of the mounting surface 2 is rectangular. The mounting surface 2 has 1 support tube 7 fixed to one long side of a rectangle at each end. The support tube 7 is provided in an attitude of facing upward from the upper surface of the mounting surface 2, i.e., extending in a direction substantially normal to the mounting surface 2, and is formed integrally with the mounting surface 2. That is, the support tube 7 protrudes upward from the upper surface of the mounting surface 2 and does not protrude to the bottom surface side. This prevents the lower end of the support tube 7 from colliding with the traveling road surface and interfering with the traveling of the bag 100, and allows even a traveling road surface having some steps to smoothly move.

Further, since the caster 6 and the support tube 7 are provided separately on the front and rear surfaces of the mounting surface 2, the positioning can be freely performed on the respective surfaces without depending on the formation positions. That is, since the caster 6 and the support tube 7 are not provided on the same surface of the mounting surface 2, it is not necessary to provide the support tube 7 while avoiding the fixed position of the caster 6. In the example of fig. 8 and 9, the support tube 7 and the caster 6 are both positioned at the corner of the placement surface 2, in other words, the caster 6 is attached in the substantially vertical direction of the support tube 7. Accordingly, since the force applied to the handle 4 is linearly transmitted from the support tube 7 to the caster 6, the moving direction of the caster can be easily controlled, and the stability of the bag can be increased. Further, it is preferable that the force required for moving the bag can be reduced.

Fig. 10 is a perspective view of the base-and-frame assembly 1 viewed from the mounting surface 2. As shown in fig. 10, the base-and-frame assembly 1 includes a reinforcing wall 8 that connects the support tube 7 to the mounting surface 2 at a rising portion of the support tube 7 that protrudes upward from the upper surface of the mounting surface 2 substantially perpendicularly. The reinforcing wall 8 is connected only to the same side of the carriage surface 2 to which the support tube 7 is connected, and the support tube 7 and the reinforcing wall 8 are located in substantially the same plane. That is, both the support tube 7 and the reinforcing wall 8 are disposed in a plane orthogonal upward from the mounting surface side, and the support tube 7 and the reinforcing wall 8 are connected to each other in thickness. More specifically, the reinforcing wall 8 is formed at a position filling a corner of a joint region formed by the carriage surface 2 and the support tube 7 being substantially orthogonal to each other. In the example of fig. 10, the two support cylinders 7 are separated in parallel, and the reinforcing wall 8 is located within the interval therebetween. That is, the reinforcing wall 8 is provided between the two support tubes 7 standing upward from both ends of one side of the mounting surface 2, and inside the rectangular rod frame 29 surrounded by the mounting surface 2, the support tubes 7, and the extendable rod 5. From the viewpoint of strength, the reinforcing wall 8 is preferably formed integrally with the mounting surface 2 and the support tube 7.

Further, as shown in fig. 10, the reinforcing wall 8 may be provided at 1 or more positions at the corner of the rod frame 29. The reinforcing wall 8 in this case has a shape having an area that can substantially connect substantially orthogonal and adjacent sides of the frame 29 while filling at least the corner of the frame 29. Specifically, as shown in the drawing, the bar frame 29 may be formed in a triangular shape in accordance with the shape of the corner portion, and may be formed in various shapes such as a polygonal shape, a curve in which the right-angled opposite sides of the corner portion are formed into a wavy line or an arc shape, or a stepped shape having unevenness. Alternatively, the support tubes 7 may be bridged to each other in the rod frame 29. The reinforcing wall 8 may be formed to have a point-like opening therein so as to be lightweight while maintaining the overall shape.

By providing the reinforcing wall 8 in this way, the strength of the support tube 7 and the extendable rod 5 is increased. In particular, the vertical portion of the support tube 7 and the corner portion of the rod frame 29 are reinforced, so that the rod frame 29 is more stable and deformation of the frame can be prevented. That is, the horizontal direction of the pushed telescopic rod 5, that is, the strength in the left-right direction of fig. 10 increases.

The support tube 7 further includes a reinforcement base 34 protruding in the thickness direction of the reinforcement wall 8. Fig. 11 is a side view of the base frame 1 of fig. 8 viewed from the left proximal side. As shown in fig. 11, the reinforcing base portion 34 is formed at the upright portion of the support tube 7 so as to protrude outward from the rod frame 29 in the vertical direction, that is, in the rear surface direction (the right direction in fig. 11) of the base-and-frame assembly 1. By increasing the diameter of the standing portion of the support tube 7 in this way, the support tube 7 is more firmly configured, and therefore the extendable rod 5 connected to the inside of the support tube 7 can be stably supported. The reinforcing base 34 is preferably formed integrally with the support tube 7 from the viewpoint of strength, as in the case of the reinforcing wall 8 described above.

In the example of fig. 11, the support tube 7 has a reinforcement base 34, and the reinforcement base 34 is provided over the entire vertical region of the support tube 7. Further, the diameter of the support tube 7 increases as it approaches the placement surface 2, that is, the reinforcement base 34 increases the amount of protrusion from the support tube 7 as it goes downward, and the support tube 7 is formed to be thick. In the example of the reinforcing base 34 in fig. 11, the protruding shape is formed in a smoothly inclined or curved shape, but the protruding shape and the formation region are not limited thereto.

For example, in the support tube 7 shown in fig. 12, a columnar shape having the same diameter is formed above the support tube. The reinforcing base portion 34 is formed in a stepped shape protruding toward the rear surface of the base-and-frame assembly 1 from the middle of the support tube 7 in the longitudinal direction toward the placement surface 2. The reinforcing base portion 34 in fig. 12 is configured such that the diameter of the reinforcing base portion 34 gradually increases as the base portion approaches the placement surface 2.

On the other hand, in the example of the support tube 7 shown in fig. 13, the protruding shape of the reinforcement base 34 has a substantially constant diameter, that is, the back surface side of the support tube 7 protrudes in a stepped shape on the reinforcement base 34. In fig. 12 and 13, a single step is provided, and this region is defined as the reinforcing base 34, and the number of steps may be plural, and the diameter of the reinforcing base 34 may be substantially constant or may be configured to be larger downward. In this way, by projecting the reinforcing base 34 in the rear direction of the base-and-frame assembly 1, the support tube 7 and the extendable rod 5 can be reinforced without providing a projecting portion on the placement surface 2 side. That is, the strength in the front-rear direction (the left-right direction in fig. 11 to 13) of the extendable rod 5 becomes high.

By adding the reinforcing wall 8 and the reinforcing base 34 to the support tube 7, the rod frame 29 can be reinforced in the horizontal direction and the vertical direction, that is, in the front-rear and left-right directions. The three-dimensionally reinforced pole frame 29 has improved load bearing performance, and can effectively perform a walking assistance function in addition to supporting the load of the subject 3 and/or the carrier. Further, since the bag 100 can stand by itself stably, the possibility of falling down is significantly reduced at both the stop and the travel.

The base frame 1 including the placement surface 2, the support tube 7, the reinforcing wall 8, and the reinforcing base 34 is integrally molded from a light metal such as plastic or aluminum. Therefore, the respective portions are connected to each other in the step of molding from plastic or light metal. The base-and-frame assembly 1 can enhance the coupling strength of each of the reinforcing wall 8, the reinforcing base 34, the mounting surface 2, and the support tube 7. However, the base frame 1 of the present invention may be configured such that each portion is formed separately and then fixed by a structure such as adhesion or screw fixation. The materials of the members constituting the base frame 1 may be the same or plural, and are appropriately determined in consideration of weight reduction, strength, and the like.

The shape of the extendable rod 5 and the support tube 7 is not particularly limited as long as the extendable rod 5 can be inserted into the hollow space of the support tube 7. For example, in the bag 100 of fig. 8 to 11, the support tube 7 is formed in a square tube shape corresponding to the telescopic rod 5 having a square column shape. Alternatively, a combination of a cylindrical shape and a cylindrical shape may be employed. That is, the outer peripheral shape of the telescopic rod 5 is preferably similar to the hollow inner peripheral shape of the support cylinder 7. The telescopic rod 5 inserted in the support cylinder 7 is fixed to the support cylinder 7 by a fixing screw. However, the extendable rod 5 may be inserted and fixed to the support tube 7 by adhesion or may be connected by a fitting structure that does not come off. With this structure, the extendable rod 5 can be fixed to the mounting surface 2 with a strong structure by connecting the extendable rod 5 to the mounting surface 2.

As described above, the bag 100 according to embodiment 1 is realized by providing the reinforcing wall 8 and the reinforcing base 34 on the upper side of the placement surface 2 as the reinforcement of the support tube 7 and/or the extendable rod 5. Therefore, the reinforcing members for reinforcing the wall 8 and the reinforcing base 34 are not provided below the mounting surface 2, and the mounting positions of the casters 6 fixed to the bottom surface of the mounting surface 2 are not specified. That is, the caster 6 can be fixed to a desired position. In particular, by forming the reinforcing member in the region between the support tubes 7, as shown in fig. 10, it is possible to completely remove obstacles such as walls in the lateral direction of the mounting surface 2. That is, since the space restriction can be reduced as much as possible in the placement region of the bag body 3, the selection range of the bag body 3 to be placed is expanded. Further, since the position of connection with the support tube 7 can be freely set on the upper surface of the mounting surface 2, the distance of the support tube 7 can be adjusted according to the length of the grip 4 which can be easily gripped, and an ideal positioning of the support tube 7 can be realized.

Fig. 14A is a plan view of the base frame 1 as viewed from above, and fig. 14B is a bottom view of the base frame 1. As shown in fig. 14, reinforcement ribs 10 extending in the vertical and horizontal directions are integrally formed of plastic or light metal on the bottom surface of the mounting surface 2. The mounting surface 2 can be made thin as a whole and can be made strong by the reinforcing ribs 10. Further, the mounting surface may be made lighter by providing through holes that vertically penetrate the mounting surface between the vertically and horizontally arranged reinforcing ribs.

(method of attaching bag body)

A method of mounting the pack body 3 to the base frame 1 is explained below. The bag 100 shown in fig. 9 has the bag main body 3 mounted on the upper surface of the mounting surface 2 adjacent to the extendable rod 5. The bag 100 has a structure in which the bag body 3 is detachably attached. However, the bag body 3 may be fixed to the base frame 1 so as not to be detachable. The size and material of the bag body 3 are not particularly limited. In the bag body 3 of fig. 9, the flexible sheet is sewn.

First, the base frame 1 will be explained. Fig. 15 is a perspective view of the base frame 1. As shown in fig. 15, the extendable rod 5 includes a guide tube 5B and a pull-out rod 5A inserted into the guide tube 5B so as to be movable in and out. Further, although described in detail later, the extraction rod 5A in the drawings has a two-stage extraction function and is composed of an upper extraction rod 5Aa and a lower extraction rod 5 Ab.

The base-and-frame assembly 1 of fig. 15 has a connecting rod 11 bridging in a direction (the left-and-right direction of fig. 15) substantially perpendicular to the extending direction of the extendable rod 5. The connecting rod 11 has a connecting piece 13 protruding toward the mounting surface 2, i.e., in the left proximal direction in fig. 15. The connecting rod 11 is provided at the upper end of the guide cylinder 5B, and a connecting piece 13 is integrally formed by plastic or light metal. The connecting piece 13 is formed in a shape protruding upward on the surface facing the bag body 3, and is inserted into an insertion portion 3B (see fig. 3) provided in the bag body 3 to connect the bag body 3 so as not to come off. The insertion portion 3B of the bag body 3 has a connection gap opened downward, and the connection pieces 13 are inserted therein and connected to each other.

The forming position of the connecting piece 13 is not limited to the connecting rod 11. For example, the extendable rod 5 may be provided. For example, the other connecting piece 13B of fig. 15 is provided on the guide tube 5B constituting the extendable rod 5. In the case of the guide tube 5B, the distance from the mounting surface 2 to the connecting piece 13B can be shortened, and thus, even when the height of the bag body 3 to be mounted is low, the bag body 3 and the base frame 1 can be stably mounted in a state where the bottom surface of the bag body 3 is firmly in contact with the upper surface of the mounting surface 2. The number of the connecting

pieces

13, 13b is not particularly limited. For example, if the bag body 3 and the base frame 1 are a single connecting piece, they can be easily attached to and detached from each other or in a short time. Alternatively, if a plurality of connecting pieces 13 are provided at predetermined intervals in the vertical direction, the connecting position with the base frame 1 can be adjusted in one pack body 3 in addition to the pack bodies 3 of various sizes.

(embodiment mode 2)

The coupling mechanism between the bag body 3 and the base frame 1 is not limited to the above. Another example of the coupling mechanism will be described below as embodiment 2. Fig. 16 is an exploded perspective view of a bag with casters 300 according to embodiment 2. The bag 300 of fig. 16 is different from the bag of embodiment 1 only in the method of connecting the bag main body 3 and the base frame 1, and is similar to other structures. Therefore, the same components are assigned the same reference numerals and the description thereof is omitted.

As shown in fig. 16, the pack body 3 according to embodiment 2 has an insertion band 40 that is opened in the vertical direction. The handle 4 on the base-and-frame 1 side is inserted from below the opening, and the handle 4 is moved upward, that is, the extendable rod 5 is inserted into the insertion band 40. Then, as shown in fig. 17, the bag body 3 and the base frame 1 can be fixed in a state where the bag body 3 is placed on the placement surface 2 of the base frame 1. When the bag main body 3 is detached from the base frame 1, the bag main body 3 is lifted up and the extendable rod 5 inserted into the insertion band 40 is released. In this way, the bag body 3 and the base frame 1 can be easily attached and detached by providing a connection mode in which a part of the base frame side is inserted into the insertion portion provided on the bag body 3 side.

The insertion band 40 is provided on the outermost surface side of the pack body 3. The opening width of the insertion band 40 can be variously changed, but it is preferable that the width is at least as wide as the insertion band 29, and is slightly more than the insertion band 29. This allows the bag body 3 and the base-and-frame assembly 1 to be easily and stably coupled to each other. In the example of fig. 16, a rectangular insertion band 40 is formed on at least one of the front and rear surfaces of the pack body 3, which is a surface perpendicular to the width direction of the pack body 3. The insertion band 40 is preferably sewn integrally with the bag main body 3 from the viewpoint of simplicity of manufacture, but is not limited thereto, and may be formed as a separate member and detachably attached to the bag main body 3. Alternatively, the upper side of the opening in the vertical direction of the insertion band 40 may be always opened, and the lower side may be opened and closed by a fixing tool or the like as appropriate. Thus, when the bag body 3 is used alone, the lower side of the insertion band 40 can be closed and used as a pocket of the bag body 3. The material of the insertion band 40 is not particularly limited, and may be the same material as or different from the bag body 3 to improve the design. Further, a stretchable material or a material to which a function such as abrasion resistance is added may be used.

Further, the base frame 1 may be wound around a part of the bag body 3. For example, a pair of short strips are provided on the bag body 3, and the short strips are wound around the extendable rod 5 or the placement surface 2 in a state where the bag body 3 is placed on the placement surface 2. Further, both ends of the short piece are connected to each other, and the bag body 3 and the base frame 1 are fixed. The connecting mechanism between the short pieces is not particularly limited, and examples thereof include a button, a hook tape (male tape) (registered trademark), a band, a strap, a loop, and a fastener. The coupling mechanism may be a single one, or various coupling mechanisms may be combined.

The extendable rod 5 can be stopped at a predetermined position in an extended and retracted state in the vertical direction, which will be described in detail later. As shown by arrows in fig. 15, the base-and-frame assembly 1 has a plurality of stop positions between the loading and unloading of the pull-out rod 5A into and from the guide cylinder 5B. For example, if the pull-out lever 5A is pushed down, the pull-out lever 5A is stored in the lower guide tube 5B and stops at the lowest position. Fig. 18 shows a bag 300 in which the bag main body 3 and the base-and-frame assembly 1 are connected by the connecting mechanism according to embodiment 2, and shows a state in which the extendable rod 5 is further lowered. As shown in fig. 18, in a posture in which the extendable rod 5 is stopped at the lowermost position, the base-and-frame assembly 1 is downsized and stored along the bag body 3. That is, the size of the entire bag 100 can be made substantially the same as that of the bag main body 3, and as a result, the entire bag 300 can be lifted and transported by hanging the handle 46 of the bag main body 3 on the shoulder, arm, or the like. That is, the base frame 1 and the bag body 3 can be integrally stored and transported, and the bag 300 can be moved without using the caster 6. This is convenient when the bag 300 is lifted from the road surface and transported in an environment where the casters 6 are not easily used, such as a road surface having steps. In particular, as shown in fig. 18, the handle 46 on the side adjacent to the extendable rod 5, out of the pair of handles 46 of the bag body 3, is passed between the handle 4 and the connecting rod 11 from the inside to the outside, whereby the handle 46 can be rolled in and supported by the handle 4 from the bottom to the top, and therefore, the bag body can be easily and stably transported.

Further, as shown in fig. 8 to 9, 11, and the like, if the extendable rod 5 is extended and the handle 4 is lifted, it is bent from the side fixed to the mounting surface 2 toward the center so that the handle 4 is eccentric. As shown in the drawing, when the extendable rod 5 is fixed to the right side of the mounting surface 2, the center of the mounting surface 2 is the center in the left-right direction. In the bag 100 of fig. 9, since the extendable rod 5 is fixed to the right side of the mounting surface 2, if the extendable rod 5 is pulled up, the extendable rod 5 is bent so that the handle 4 is eccentric from the right side to the left side of the mounting surface 2. In other words, the extendable rod 5 is bent in such a direction that the center portion protrudes outward, and the pulled-up handle 4 is eccentric in a direction approaching the center from the side portion of the placement surface 2. The handle 4 is not necessarily positioned at the center of the placement surface 2 in a state where the extendable rod 5 is pulled up. This is because, even if the handle 4 is not completely centered, the bag 100 can be moved forward by pressing the handle 4 without turning. In the figure, the position of the pulled-up handle 4 is, for example, 15 to 80%, preferably 20 to 60%, and more preferably 20 to 50% of the position of the end face of the placement surface 2 to which the extendable rod 5 is fixed, if the end face on the opposite side is 100, which is 0 point with respect to the one end face of the placement surface.

(embodiment mode 3)

Fig. 19 is a side view of the wheeled luggage 400 according to embodiment 3, in which if the extendable rod 5 is extended and the handle 4 is pulled up, the extendable rod 5 is fixed to the mounting surface 2 so as to be inclined such that the handle 4 is eccentric from the side fixed to the mounting surface 2 toward the center. In the bag 400 of fig. 19, since the extendable rod 5 is fixed to the right side of the mounting surface 2, if the extendable rod 5 is pulled up, the extendable rod 5 is tilted so that the handle 4 is eccentric from the right side to the left side of the mounting surface 2. Similarly to the curved extendable rod 5, the inclined extendable rod 5 does not necessarily have to position the handle 4 at the center of the mounting surface 2 in a state where the handle 4 is pulled up. This is because, even if the handle 4 is not completely centered, the bag 400 can be moved forward by pressing the handle 4 without turning.

Further, although not shown, the bag may be configured such that the curved extendable rod is fixed obliquely to the placement surface and the handle is pulled up to be eccentric from the placement surface toward the center. The bag has a large radius of curvature and an inclination angle close to a right angle, and the handle can be pulled up to be close to the center of the placement surface. This is because the handle pulled up can be made eccentric from the side portion of the mounting surface toward the center in both the inclination and the bending.

In the bag of the above embodiment, two extendable rods 5 are fixed to both ends of one side of the placement surface 2. In this way, the structure in which the extendable rod 5 is disposed on one side of the mounting surface 2 has a merit that the bottom surface of the bag body 3 attached to the mounting surface 2 can be made large because the bag body 3 can be disposed on substantially the entire upper surface of the mounting surface 2. However, the bag of the present invention is not limited to the structure in which the extendable rod is disposed at both ends of one side of the placement surface. The extendable rod 5 may be disposed, for example, at a position eccentric to the center on one side of the mounting surface.

In the contracted state of the extendable rod 5, in other words, in the state where the handle 4 is pushed down most, the handle 4 is positioned above or above the bag body 3 and stopped by the stopper. The extendable rod 5 is retracted to a position where the handle 4 is at its lowest position, and the distance from the bottom surface of the caster 6 to the upper surface of the handle 4 is about 50 cm. Wherein, when the telescopic rod 5 is contracted to make the handle 4 at the lowest position, the distance from the bottom surface of the caster 6 to the upper surface of the handle 4 is preferably 30-80 cm, and more preferably 35-70 cm. When the extendable rod 5 is retracted to minimize the height of the handle 4, the bag body 3 is lowered relative to the handle 4, thereby facilitating grasping of the handle 4. The extendable rod 5 is stopped by a stopper at a position where the height from the bottom surface of the caster 6 to the center of the handle 4 is 60 to 100cm, preferably 65 to 85cm, in an extended state, in other words, in a state where the handle 4 is pulled up to the highest level.

As shown in fig. 15, the extendable rod 5 includes a guide tube 5B fixed to the mounting surface 2 so as to extend in the vertical direction, and a two-stage extension rod 5A inserted into the guide tube 5B so as to be movable in and out, and a handle 4 is fixed to the upper end of an upper-stage extension rod 5 Aa. In the two-stage extraction rod 5A, the upper extraction rod 5Aa is made thinner than the lower extraction rod 5Ab, and the upper extraction rod 5Aa is inserted into the lower extraction rod 5Ab so as to be movable in and out. Further, the lower extraction rod 5Ab of the extendable rod 5 is made thinner than the guide tube 5B so that the lower extraction rod 5Ab can be inserted into and out of the guide tube 5B. The guide cylinder 5B and the pull-out rod 5A may be made of metal cylinders having different thicknesses. The guide cylinder and the pull-out rod can also be made by molding plastic or light metal into a square cylinder shape. The extendable rod in the figure is constructed to be extendable and contractible in two stages, but the extendable rod may be constructed to be extendable and contractible in 1 stage, or may be constructed to be extendable and contractible in 3 stages or more.

In the bag shown in the above figures, the two extendable rods 5 are fixed to at least a part of one side of the mounting surface 2, and the handle 4 is connected to the upper ends of the two extendable rods 5. Specifically, the two extendable rods 5 are fixed at both corners on one side of the mounting surface 2 or closer to the center side than both ends.

Further, the two extendable rods 5 are connected to the upper end of the guide tube 5B by a connecting rod 11. The guide tube 5B has a lower end fixed to the support tube 7 of the mounting surface 2 and an upper end connected by a connecting rod 11. Thus, the structure in which the upper ends of the guide cylinders 5B are connected by the connecting rod 11 can reinforce the two extendable rods 5 and can stand up by themselves more stably. An insertion gap 14 for receiving a hand and a handle 46 of the bag body 3 is provided between the connecting rod 11 and the handle 4 which is most lowered as shown in fig. 18. This is to facilitate grasping of the descending handle 4. The handle 4 in the figure is integrally formed in the shape of "コ" by plastic or light metal, and bent portions at both ends are connected to the pull-out rod 5A, and an insertion gap 14 is provided.

The stopper may use any mechanism capable of stopping the expansion and contraction of the telescopic bar 5. Fig. 20 to 22 show an example of the stopper. The extendable rod 5 shown in these figures is constructed so as to be able to extend and contract the two-stage extension rod 5A, and therefore includes two stoppers 15 at the upper and lower sides. The 1 st stopper 15A stops the expansion and contraction of the upper extraction rod 5Aa and the lower extraction rod 5 Ab. The 2 nd stopper 15B stops the extension of the lower extraction rod 5Ab and the guide tube 5B. Further, the contraction of the lower extraction rod 5Ab and the guide tube 5B is stopped by the 1 st stopper 15A.

The 1 st stopper 15A includes: a protrusion pin 16 disposed at the lower end of the upper extraction rod 5Aa and elastically protruding toward the lower extraction rod 5 Ab; an engaging portion 17 provided on the lower extraction rod 5Ab and into which the protrusion pin 16 is inserted; and a 1 st releasing mechanism 18 for forcibly pulling the projecting pin 16 from the locking part 17. The 2 nd stopper 15B includes: a protrusion pin 36 disposed on the lower end of the lower extraction rod 5Ab and elastically protruding toward the guide tube 5B; a locking part 37 provided on the guide cylinder 5B and into which the projecting pin 36 is inserted; and a 2 nd release mechanism 38 that forcibly pulls the protrusion pin 36 from the locking portion 37.

The projecting pin 16 is disposed inside the lower end portion of the upper-stage draw-out rod 5Aa via an elastic member 19 so as to elastically project in the outer peripheral direction of the draw-out rod 5A. The protruding pin 36 is disposed inside the lower end portion of the lower extraction rod 5Ab via an elastic member 39 so as to elastically protrude in the outer circumferential direction of the extraction rod 5A. These projecting

pins

16 and 36 are pressed by

elastic members

19 and 39 and elastically project from the draw-out rod 5A. The projecting pins 16, 36 are disposed on the pull-out rod 5A so as to project in opposite directions to each other. The extendable rod 5 in the figure has the projecting pin 16 projecting inward, i.e., in the direction of the opposing extendable rod 5, and the projecting pin 36 projecting outward, i.e., in the direction opposite to the opposing extendable rod 5.

The locking

portions

17 and 37 are through holes or recesses into which the protruding pins 16 and 36 are inserted. The lower extraction rod 5Ab and the guide tube 5B shown in the figure have through holes as the locking

portions

17 and 37 into which the protruding pins 16 and 36 are inserted. In this way, the

engagement portions

17 and 37 are configured as through holes, and the protruding pins 16 and 36 inserted therein protrude through the through holes, so that the extendable rod 5 can be reliably stopped. This makes it possible to use the telescopic rod 5 safely, in particular when using it instead of a walking stick, in other words when supporting the body as a posture in which the body weight is applied to the handle 4. This is because the protruding pins 16 and 36 can be effectively prevented from being inadvertently removed from the locking

portions

17 and 37 and the telescopic rod 5 can be effectively prevented from being pushed in. Further, when the handle 4 is gripped to lift the entire bag, the extendable rod 5 can be prevented from being pulled out unintentionally. Thus, the stopper 15 that can reliably fix the position of the pull-out lever 5A has an advantage that it can be used safely even when the handle 4 is set to the raised position or the lowered position. However, the locking portion may be a recess into which the tip of the protruding pin is inserted.

Although not shown, the engaging portion 17 provided on the lower extraction rod 5Ab is provided at a position where the projecting pin 16 is inserted in a state where the upper extraction rod 5Aa is most extracted, a state where the upper extraction rod is intermediately extracted, and a state where the upper extraction rod is most lowered. In a state where the upper extraction rod 5Aa is pulled up most, the projecting pin 16 is inserted into the uppermost locking portion 17, in a state where the upper extraction rod 5Aa is lowered most, the projecting pin 16 is inserted into the lowermost locking portion 17, and further, in a state where the upper extraction rod 5Aa is pulled up halfway, the projecting pin 16 is inserted into the intermediate locking portion 17, and the extension and contraction of the upper extraction rod 5Aa are stopped. In this way, the extendable rod 5 having the locking portion 17 provided in the middle of the lower extraction rod 5Ab has an advantage that the upper extraction rod 5Aa can be extended and contracted in a plurality of stages. However, the upper-stage pullout lever does not necessarily have to be configured to be able to stop at the intermediate position, and may stop only at the raised position and the lowered position. Further, the upper-stage extraction rod may be provided with a plurality of locking portions in the middle of the lower-stage extraction rod, and the upper-stage extraction rod that has been pulled up to the middle may be stopped at a plurality of pull-up positions. The telescopic rod can move the handle up and down little by little to select a proper position.

The engagement portion 37 provided in the guide tube 5B is provided at a position where the projecting pin 36 is inserted in a state where the lower extraction rod 5Ab is most extracted. In a state where the lower extraction rod 5Ab is most extracted, the protrusion pin 36 is inserted into the engagement portion 37, and the extension of the lower extraction rod 5Ab is stopped. As shown in fig. 21, the guide tube 5B is provided with an engaging portion 30 into which the projecting pin 16 is inserted in a state where the upper extraction rod 5Aa and the lower extraction rod 5Ab are lowered most. The locking portion 30 is provided at a position where the protruding pin 16 penetrating the lowermost locking portion 17 of the lower extraction rod 5Ab at the lowered position is inserted. That is, in the telescopic link 5, in a state where the upper extraction rod 5Aa and the lower extraction rod 5Ab are lowered most, the projecting pin 16 is inserted into the locking portion 17 of the lower extraction rod 5Ab and the locking portion 30 inside the guide tube 5B, and the telescopic link 5 is stopped in a state where it is retracted most. Thus, the protrusion pin 36 is inserted into the locking portion 37 provided on the outer side of the guide tube 5B, the extension of the lower extraction rod 5Ab is stopped, the protrusion pin 16 is inserted into the locking portion 30 provided on the inner side of the guide tube 5B, and the contraction of the lower extraction rod 5Ab is stopped.

As shown in fig. 22, the 1 st release mechanism 18 includes: a button 20 provided on the handle 4; a driving rod 21 connected to the button 20 and moving up and down by the button 20; and a rotating piece 22 which is pushed by the lower end of the driving rod 21 and rotates in a direction of forcibly drawing in the protruding pin 16.

The button 20 is provided at a central portion of an upper surface of the handle 4 so as to be movable up and down. The push button 20 is connected to the lower surface of the handle 4 via an elastic body 23, and is elastically pushed out via the elastic body 23. The push button 20 is connected to a drive rod 21 at the lower surface, and the drive rod 21 is driven up and down if the push button 20 is moved up and down by a finger.

The drive lever 21 is disposed inside the handle 4 and the upper-stage pull-out lever 5Aa, and rotates the rotary piece 22 when the push button 20 is driven up and down. The drive lever 21 shown in fig. 22 includes: a horizontal bar 21A connected to the lower surface of the handle 4; and a vertical rod 21B inserted through the upper-stage pull-out rod 5 Aa. Both ends of the horizontal bar 21A are positioned above the upper end of the vertical bar 21B, and if the horizontal bar 21A is pushed downward, the vertical bar 21B is pushed downward. The vertical rod 21B has its upper end inserted into the insertion cap 24 that moves vertically in the upper extraction rod 5Aa, and the vertical rod 21B can be moved vertically in the upper extraction rod 5Aa accurately. However, both ends of the horizontal bar may be coupled to the upper ends of the vertical bars. For example, the driving rod may be 1 rod bent into "コ". The lower end of the drive rod 21 is extended to the lower end of the pull-out rod 5Aa of the upper stage.

The rotating piece 22 is disposed at the lower end of the upper-stage pull-out rod 5Aa, and is pressed by the lower end of the drive lever 21 to rotate in a direction in which the protruding pin 16 is forcibly pulled in. The upper-stage pull-out rod 5Aa is shown as having a guide cap 25 connected to a lower end thereof, and a rotating piece 22 is mounted inside the guide cap 25 so as to be rotatable in a vertical plane. The guide cap 25 has an insertion hole 26A through which the drive lever 21 is inserted in a coupling cylindrical portion 26 inserted into the upper pull-out rod 5Aa, so that the lower end portion of the drive lever 21 can be accurately moved up and down. The rotating piece 22 is bent in an L shape as a whole, one end thereof is connected to the guide cap 25 via a rotating shaft 27, and a pin 22 protruding toward the protruding pin 15 is provided on both sides of the other end. When the rotating piece 22 is pushed and rotated by the drive lever 21, the tip of the pin 22A abuts on the protruding portion 16A provided on both sides of the protruding pin 16, and the protruding pin 16 is pushed and forcibly retreated by the rotating pin 22A. When the pushing of the drive lever 21 is released, the projecting pin 16 is not pushed by the pin 22A of the rotating piece 22, but is elastically pushed out by the elastic member 19 (fig. 20), and the rotating piece 22 is rotated to the original posture.

The 1 st release mechanism 18 described above pushes the drive lever 21 downward if the push button 20 is pushed, and rotates the rotary piece 22 disposed at the lower end of the drive lever 21. The rotating piece 22 moves the projecting pin 16 in the pulling direction by the tip of the pin 22A, and pulls out the projecting pin 16 from the locking portion 17. In this state, the 1 st stopper 15A is released, and the upper extraction rod 5Aa is allowed to move vertically inside the lower extraction rod 5 Ab. When the push button 20 is released, the projecting pin 16 is pressed by the elastic member 19 and can project toward the lower extraction rod 5 Ab.

The 1 st stopper 15A presses a button 20 of a 1 st release mechanism 18 provided on the handle 4 to forcibly draw in the protruding pin 16 to release the locked state. In this state, the upper extraction rod 5Aa is pulled up or lowered down. The upper extraction rod 5Aa, which has pulled up the protrusion pin 16, moves vertically inside the lower extraction rod 5 Ab. After the push button 20 is separated, if the handle 4 is adjusted to a predetermined height, the projecting pin 16 is guided to the locking portion 17, the extension and contraction of the upper extraction rod 5Aa are stopped, and the raising and lowering of the handle 4 are stopped.

The 2 nd release mechanism 38 includes: an insertion rod 31 provided on the lower end of the pull-out rod 5Aa of the upper stage; and a rotating piece 32 which is pressed by the lower end of the insertion rod 31 and rotates in a direction to forcibly draw in the protruding pin 36.

The insertion rod 31 is provided to protrude downward below the guide cap 25 fixed to the lower end of the upper-stage pull-out rod 5 Aa. The insertion rod 31 is inserted into an insertion hole 35A of a guide cap 35 fixed to the lower end of the lower extraction rod 5Ab, and the lower end thereof presses the upper surface of the rotating piece 32, thereby rotating the rotating piece 32.

The rotating piece 32 is disposed at the lower end of the lower extraction rod 5Ab, and is pressed by the lower end of the insertion rod 31 to rotate in a direction to forcibly pull in the protruding pin 36. A guide cap 35 is connected to a lower end of the lower extraction rod 5Ab shown in the figure, and a rotating piece 32 is attached to the inside of the guide cap 35 so as to be rotatable in a vertical plane. The guide cap 35 is opened at an upper side with an insertion hole 35A to be able to insert the insertion rod 31. The rotating piece 32 is bent in an L shape as a whole, one end thereof is connected to the guide cap 35 via the rotating shaft 33, and a pin 32A protruding toward the protruding pin 36 is provided on both sides of the other end. When the rotating piece 32 is pressed and rotated by the insertion rod 31, the tip of the pin 32A abuts on the protruding portion 36A provided on both sides of the protruding pin 36, and the protruding pin 36 is pressed and forcibly retracted by the rotating pin 32A. When the pressing of the insertion lever 31 is released, the protruding pin 36 is no longer pressed by the pin 32A of the rotating piece 32, and is elastically pushed out by the elastic member 39, so that the rotating piece 32 rotates to the original posture.

The above-described 2 nd release mechanism 38, if the upper extraction rod 5Aa is pushed into the deepest portion of the lower extraction rod 5Ab, inserts the insertion rod 31 into the insertion hole 35A of the guide cap 35, and rotates the rotating piece 32 disposed at the lower end of the lower extraction rod 5 Ab. The rotating piece 32 moves the protruding pin 36 in the direction of removal by the tip of the pin 32A, and removes the protruding pin 36 from the locking portion 37. In this state, the 2 nd stopper 15B is released, and the lower extraction rod 5Ab is in a state of being movable up and down inside the guide tube 5B. At this time, the projecting pin 16 of the 1 st stopper 15A is inserted into the lowermost locking portion 17 of the lower extraction rod 5Ab, and the insertion rod 31 is held in a state inserted into the insertion hole 35A of the guide cap 35. Therefore, the projecting pin 36 is held in a state of being moved in the pull-out direction by the rotating piece 32. In this state, the upper extraction rod 5Aa and the lower extraction rod 5Ab are connected in a contracted state, and the upper extraction rod 5Aa and the lower extraction rod 5Ab move up and down inside the guide tube 5B in an integrally connected state.

Further, if the upper extraction rod 5Aa and the lower extraction rod 5Ab, which are integrally connected, are inserted into the guide tube 5B to the deepest extent, the protruding pin 16 of the 1 st stopper 15A is inserted into the engagement portion 30 provided inside the guide tube 5B. In this state, the retraction of the extendable rod 5 is stopped, and the handle 4 is stopped in the most lowered state. When the locking state of the protruding pin 16 and the locking portion 30 is released, the button 20 of the 1 st release mechanism 18 is pressed to pull out the protruding pin 16 from the locking portion 30. In this state, the lower extraction rod 5Ab is in a state of being movable vertically inside the guide tube 5B.

When the drawing of the lower drawing rod 5Ab is stopped, the push button 20 of the 1 st release mechanism 18 is pressed to forcibly draw in the projecting pin 16, release the 1 st stopper 15A, and draw out the upper drawing rod 5Aa from the lower drawing rod 5 Ab. At this time, the insertion rod 31 is pulled out from the insertion hole 35A of the guide cap 35, and the projecting pin 36 is in a projecting state by the elastic member 39. In this state, the lower extraction rod 5Ab is extracted, the protrusion pin 36 is inserted into the engagement portion 37 provided at the upper end of the guide tube 5B, and the extraction of the lower extraction rod 5Ab is stopped.

The stopper 15 configured as above can stop the extension bar 5A at a predetermined position with the extension bar 5 extending and contracting in two stages. However, the bag of the present invention does not specify the stopper as the above configuration. The stopper may be any mechanism capable of stopping the extendable rod at a predetermined position.

(embodiment mode 4)

Further, the platform 102 of the caster-equipped bag is provided with a reinforcing rib protruding downward on the platform plate 9. The reinforcement rib is integrally provided with a latitudinal reinforcement rib 112A that extends in the lateral direction on the lower surface of the carriage plate 9 and protrudes downward. Further, the latitudinal reinforcement rib 112A forms a reinforcement protrusion 108 by projecting a region located below the support tube 7 downward. The reinforcing protrusion 108 reinforces the construction of the base frame 1 more firmly. The caster-equipped bag 500 provided with the reinforcing protrusion 108 is embodiment 4, and the detailed description thereof will be described below. However, members having the same functions as those in embodiments 1 to 3 are given the same reference numerals, and detailed description thereof is omitted. Note that, in order to clearly show the features of the components according to embodiment 4, other components may be omitted from the drawings.

Fig. 23 is a partially enlarged perspective view of the bag with casters 500 according to embodiment 4, and shows a perspective view of the base-and-frame assembly 1 as viewed from the back side of the bag 500. Fig. 24 and 25 are perspective views of the caster-equipped bag 500 as viewed from the bottom surface side, that is, partially enlarged views showing the back side of the mounting surface 2 in fig. 23. In particular, fig. 24 is a perspective view of the bottom surface 2A from the rear side, and fig. 25 is a perspective view of the bottom surface 2A from the front side. In fig. 25, the caster is shown by a broken line, and in fig. 24, the caster is not shown. In the present specification, the following definitions are given for directional terms. That is, with reference to the corner of the mounting plate 9 to which the support tube 7 is coupled, the short side of the rectangular mounting plate 9 is referred to as the x-axis direction, the long side of the mounting plate 9 is referred to as the y-axis direction, and the axial direction of the support tube 7 and the direction substantially coincident with the normal direction of the mounting plate 9 are referred to as the z-axis direction (upward direction in fig. 23). The long sides of the mounting plate 9 are referred to as vertical sides, and the short sides are referred to as horizontal sides.

The caster-equipped bag 500 according to embodiment 4 is composed of a bag main body 3 and a base frame 1 capable of transporting the bag main body 3, as in embodiment 1. As shown in fig. 23, the base-and-frame assembly 1 includes a mounting table 102 on which the pack body 3 is detachably mounted. The mounting table 102 has a flat plate-shaped mounting plate 9, and the support tube 7 is connected to the mounting plate 9 in a posture extending substantially upward from both ends of one side thereof. The upper surface of the mounting plate 9 is defined as a mounting surface 2, and the bag body 3 can be mounted on the mounting surface 2 in contact therewith. The mounting plate 9 further includes a bottom surface 2A facing the mounting surface 2, and a side surface 2B on the outer periphery of the mounting plate 9.

The platform 102 in fig. 23 is provided with a reinforcing rib on the bottom surface side at the outer peripheral portion of the platform plate 9. The reinforcing rib provided on the carriage plate 9 is provided so as to protrude below the carriage plate 9, and so as not to protrude above the carriage surface 2 so as to be substantially perpendicular to the carriage surface 2. Thus, the reinforcing ribs of the platform plate 9 do not protrude above the platform surface, and a large platform area for the bag body 3 can be ensured. The reinforcing ribs around the carriage plate 9, which has a rectangular overall shape, include latitudinal reinforcing ribs 112A provided parallel to the short sides of the carriage plate 9, and longitudinal reinforcing ribs 122 provided parallel to the long sides of the carriage plate 9.

The latitudinal reinforcement rib 112A has a reinforcement protrusion 108 (hatched portion in fig. 23) that protrudes further downward at the lower edge. The reinforcement protrusion 108 is integrally formed on the latitudinal reinforcement rib 112A. The reinforcing protrusion 108 is provided so as to be located below the connecting portion between the carriage plate 9 and the support tube 7. The reinforcing protrusion 108 in fig. 23 protrudes downward so as to be located at the connecting portion between the carriage plate 9 and the support tube 7, and is integrally formed with the latitudinal reinforcing rib 112A. More specifically, the reinforcing protrusion 108 is provided along an edge of a joint surface 103 (a one-dot dashed line in fig. 23) where the support tube 7 is joined to the placement surface 2. The reinforcing protrusion 108 is disposed in a posture substantially orthogonal to the joint surface 103. The reinforcing protrusion 108 increases the bending strength of the latitudinal reinforcing rib 112A in the vertical plane, increases the bending strength of the carriage plate 9, and firmly fixes the support tube 7 fixed to the upper surface so as not to be tilted in the vertical plane. In the example of fig. 23, the reinforcing protrusion 108 is provided on a part of the latitudinal reinforcing rib 112A, and specifically, is disposed only at a connection portion between the support tube 7 and the carriage surface 2. Thus, the latitudinal reinforcement rib 112A provided with the reinforcement protrusion 108 has a structure that protrudes downward beyond the other regions around the connection region between the carriage plate 9 and the support tube 7, and can intensively reinforce the connection region between the carriage plate 9 and the support tube 7. Further, if the entire length of the reinforcing protrusion 108 in the lateral direction is made longer, the strength of the platform 102 can be further improved, and if the entire length of the reinforcing protrusion 108 in the lateral direction is made shorter, the weight of the entire platform 102 can be reduced. The reinforcing protrusion 108 may be formed such that the overall length of the latitudinal reinforcing rib in the longitudinal direction is 3cm to 10cm, preferably 5cm to 8 cm. If the entire length of the reinforcing protrusion 108 in the lateral direction (x-axis direction) is within the above range, the strength and the light weight of the platform 102 can be achieved at the same time. Further, the reinforcement protrusion may be provided not only on the latitudinal reinforcement rib but also on the longitudinal reinforcement rib. The reinforcing protrusion provided on the longitudinal reinforcing rib is also provided below the support tube, and reinforces the carriage plate connected to the support tube.

The outer surface of the reinforcing protrusion 108 is formed to have substantially the same surface as the outer surfaces of the side surface 2B of the carriage plate 9 and the latitudinal reinforcing rib 112A without providing any step. By making the latitudinal reinforcement rib 112A and the reinforcement protrusion 108 the same plane from the side surface 2B, the latitudinal reinforcement rib 112A having the reinforcement protrusion 108 can reinforce the base-and-frame assembly 1 without protruding in the longitudinal direction of the carriage plate 9. In addition, it is also excellent in decorativeness. Further, the reinforcing protrusion 108 can be added to the placement plate 9 of the base frame according to embodiments 1 to 3 or other embodiments as needed, and the base frame 1 can be reinforced as needed.

The platform 102 is preferably formed integrally by the same member such as plastic as the entirety of the platform plate 9, the latitudinal reinforcement rib 112A, and the reinforcement protrusion 108. This is because the strength of the base-and-frame assembly 1 can be increased by integrally forming the platform 102 as a single component from the components constituting the platform 102, and the overall number of components can be reduced to facilitate manufacture. The reinforcing protrusion 108 is formed in a shape that increases the amount of downward protrusion of the latitudinal reinforcing rib 112A in a region from the carriage surface 2 close to the upright portion of the support tube 7, and is provided at a connection portion between the carriage surface 2 and the support tube 7. Further, the reinforcing protrusion 108 in fig. 23 maximizes the amount of protrusion below a joint point D where the mounting surface 2 and the rising portion of the support tube 7 are joined at a substantially right angle in a plan view from the side surface 2B at the outer periphery of the joint surface 103 of the support tube 7 and the mounting surface 2. This structure can most effectively reinforce the connection portion between the carriage plate 9 and the support tube 7 by the latitudinal reinforcement rib 112A having the reinforcement protrusion 108.

The latitudinal reinforcement rib 112A having the reinforcement protrusion 108 may be configured such that the protrusion amount H of the latitudinal reinforcement rib 112A is large around the rising portion of the support tube 7 on which stress easily acts on the carriage surface 2, and the protrusion amount H of the latitudinal reinforcement rib 112A is small in other regions. That is, as shown in fig. 24, it is preferable that the projection amount m of the reinforcing projection 108 is the largest in the joint area 120 between the carriage surface 2 and the support tube 7. For example, in the example of fig. 23, in a plan view from the side surface 2B, the mounting surface 2 and the rising portion of the support tube 7 are raised with reference to a joint point D where the joint point D is joined at a substantially right angle, and a perpendicular line S drawn from the joint point D toward the bottom surface 2A side is formed so as to substantially coincide with an apex T of a curve of the reinforcing protrusion 108. That is, the vertical height of the latitudinal reinforcement rib 112A is maximized at the outer periphery of the joint surface 103 where the support tube 7 is joined to the carriage surface 2 and at the rising portion of the support tube 7 that forms a substantially right angle with the carriage surface 2. The protruding amount of the reinforcing protrusion 108 is preferably larger toward the joining point D than the corner of the platform 102. This can increase the thickness of the mounting table 102 in the region where stress is likely to concentrate, and can effectively reinforce the region. However, the apex T of the bulge does not necessarily need to coincide with the perpendicular line S, and a sufficient reinforcing effect can be obtained even with some displacement.

By providing the reinforcement protrusion 108 on the latitudinal reinforcement rib 112A in this manner, the structure of the base-and-frame assembly 1 can be made stronger. The reason is as follows. If a pressing force or a force for tilting the support tube 7 is applied in the downward direction of the support tube 7, a bending stress acts on the carriage plate 9. The latitudinal reinforcement rib 112A having the reinforcement protrusion 108 reinforces the base-and-frame assembly 1 from below to enhance the bending strength, preventing deformation and damage of the base-and-frame assembly 1. In particular, by providing the reinforcing protrusion 108 in the vicinity of the rising portion of the support tube 7, the connection portion 1 in which stress is likely to concentrate is effectively reinforced. Therefore, this structure can also improve the impact resistance against a large impact instantaneously acting on the support tube 7.

In addition to the reinforcement from the bottom surface 2A side by the latitudinal reinforcement rib 112A having the reinforcement protrusion 108, the reinforcement wall 8 and the reinforcement base 34 described in embodiments 1 to 3 are provided together (see fig. 8). This makes it possible to provide a structure in which the joint region 120 between the placement surface 2 and the support tube 7 is reinforced three-dimensionally in 3 directions, i.e., downward, lateral, and vertical directions, and therefore, the strength of the framework of the base-and-frame assembly 1 can be improved more effectively.

Further, the reinforcing protrusion 108 is preferably shaped such that the central portion is high and gradually becomes low toward both sides thereof. This is because the bending strength of the reinforcing protrusion 108 can be increased to improve the impact resistance. Further, the reinforcing protrusion 108 can effectively increase the strength of the base-and-frame assembly 1 as the amount of protrusion H from the mounting surface 2 to the lower end of the reinforcing protrusion 108 increases. However, if the downward projecting amount H of the latitudinal reinforcement rib 112A having the reinforcing protrusion 108 is set to be excessively large, the reinforcing protrusion 108 may come into contact with the caster 6 and interfere with the smooth operation of the caster 6 when the bag with caster 500 is used. In order to avoid this inconvenience, the height of the reinforcing protrusion 108 is limited so that the caster 6 does not come into contact.

Specifically, fig. 26 shows a partial rear view of the caster-equipped bag 500 according to example 4, and fig. 27 shows a partial side view. As shown in fig. 26 and 27, the lower end of the reinforcing protrusion 108 is located above the upper end of the wheel 114 in the pivoting region of the swivel caster 6. More preferably, in the rotation region of the caster 6, the projecting amount m of the reinforcing protrusion 108 is limited to set a gap d between the bottom surface 109 of the reinforcing protrusion 108 and the uppermost surface of the wheel 114. Accordingly, even when the load acts in the gravity direction of the bag, for example, the platform 102 sinks downward and the distance between the upper end of the wheel 114 and the lower end of the reinforcing protrusion 108 is narrowed, the reinforcing protrusion 108 can be prevented from coming into contact with the caster 6. That is, the swing motion of the caster 6 can be always maintained smoothly. The clearance d may be set to an appropriate value by the material and play of the fixing portion, the rotating shaft, and the yoke of the caster 6, and is about 2mm in a state where the bag body is not placed and the bag is self-standing. However, the gap d may be set to 1mm to 4mm, preferably 1mm to 3 mm.

The reinforcing protrusion 108 is not particularly limited as long as it is in contact with the caster 6, and may be in the shape of a rectangle such as a rectangle, a trapezoid, or a parallelogram, or in various shapes such as a semicircle or a convex, in addition to an arc. Further, as shown by the broken line in fig. 27, the main area of the reinforcing protrusion 108 may be increased by protruding downward to such an extent that the main area does not contact the ground surface, and only the area that is contacted by the rotation of the swivel-type caster 6 may be shaped into a notch. In embodiment 4, as shown in fig. 27, in the lateral direction (x-axis direction) of the reinforcing protrusion 108, the protrusion amount m of the reinforcing protrusion 108 is increased in the lower region of the joint region 120, and the protrusion amount H of the latitudinal reinforcement rib 112A provided with the reinforcing protrusion 108 is increased as a whole downward. The protruding amount m is reduced toward both ends of the reinforcing protrusion 108, and the reinforcing protrusion 108 is formed in an arc shape. In addition, the corner portion of the mounting table 102 including the support tube 7 is configured such that the downward projecting amount m of the reinforcing protrusion 108 is reduced and the wheel 114 of the caster 6 can be rotated across the bottom surface 109 of the reinforcing protrusion 108. That is, the latitudinal reinforcement rib 112A provided with the reinforcement protrusion 108 does not contact the caster 6 at the mounting portion of the caster 6, and therefore does not hinder the movement of the caster 6. That is, by forming the reinforcing protrusion 108 into a unique shape so that the protrusion amount H of the latitudinal reinforcement rib 112A in the joining region 120 is larger than the protrusion amount H of the latitudinal reinforcement rib 112A at the corner of the platform 102 to which the caster 6 is coupled, it is possible to obtain a sufficient reinforcing area while maintaining free rotation of the caster 6.

The number of the latitudinal reinforcement ribs 112A may be one, but it is preferable to provide a plurality of ribs from the viewpoint of strength. As shown in fig. 24 and 25, a latitudinal reinforcement rib 112B may be provided on the inner side of the carriage plate 9 in addition to the latitudinal reinforcement rib 112A provided on the periphery of the carriage plate 9. The inner latitudinal reinforcement rib 112B is parallel to the surrounding latitudinal reinforcement rib 112A and is disposed near the center of the bottom surface 2A. The inner latitudinal reinforcement rib 112B is preferably located below the connecting portion between the carriage plate 9 and the support tube 7, similarly to the surrounding latitudinal reinforcement rib 112A. In the example shown in the figure, the peripheral latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B are provided on the bottom surface so as to be along the edge of the connection portion between the carriage plate 9 and the support tube 7. The peripheral latitudinal reinforcement rib 112A is provided substantially parallel to the inner latitudinal reinforcement rib 112B so as to sandwich the caster 6 attached to the corner of the carriage surface 2. By providing the circumferential latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B on the bottom surface 2A located below the support tube 7, the connection portion between the carriage plate 9 and the support tube 7 can be reinforced firmly from the bottom surface side. In particular, the bending strength of the mounting plate 9 with respect to the horizontal tilting motion of the support tube 7 can be effectively improved. The peripheral latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B may be identical in shape or may be different in shape. In the example shown in the figure, the peripheral latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B have the same shape. If the reinforcing

ribs

112A, 112B are made to have the same shape, the forming is facilitated and the manufacturing process is simplified. Alternatively, the plurality of reinforcing

ribs

112A and 112B may be formed in different shapes, and for example, in the latitudinal reinforcing rib disposed in a region not interfering with the rotation of the caster 6, the outer shape may be increased as much as possible, or the size and shape may be changed at the location of disposition. Alternatively, the outer shape of the reinforcing ribs may be reduced to reduce the overall weight of the bag.

The inner latitudinal reinforcement rib 112B is formed of one member. The inner latitudinal reinforcement rib 112B may have a shape having a reinforcement protrusion 108 protruding downward from the member constituting the platform 102, similarly to the surrounding latitudinal reinforcement rib 112A. For example, the reinforcement protrusion 108 may be integrally formed with the reinforcement rib 10 already provided. In the inner latitudinal reinforcement rib 112B in the drawing, for convenience, a region (grid-shaded portion) protruding downward (in a direction closer to the ground) than the wall of the reinforcement rib 10 is referred to as a reinforcement protrusion 108.

Further, reinforcing ribs 10 are provided on the bottom surface 2A side of the carriage plate 9 so as to intersect with each other. As shown in fig. 24 and 25, the platform 102 has reinforcing ribs 110 at four corners of the bottom surface 2A, the four corners of which are surrounded by the orthogonal reinforcing ribs 10 and the longitudinal reinforcing ribs 122. As shown in fig. 24, the support tube 7 is provided on the carriage surface 2 of the carriage plate 9 on the opposite side of the bottom surface 2A surrounded by the reinforcement ribs 110 at the corner portions. Further, as shown in fig. 25, the caster 6 is fixed to a partition defined by the reinforcement ribs 110 at the corner. That is, the caster 6 and the support tube 7 are disposed vertically via the carriage plate 9 in the partition portion of the reinforcement rib 110 at the corner. Further, the two rows of the

latitudinal reinforcement ribs

112A, 112B each having the reinforcement protrusion 108 are provided in contact with the reinforcement rib 110 at the corner, and the reinforcement rib 110 at the corner and the bottom surface 2A can be firmly connected to each other. As a result, the support tube 7 and the carriage plate 9 can be effectively reinforced from the bottom surface side.

Further, the platform 102 is provided with two rows of latitudinal reinforcement ribs, that is, the peripheral latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B, in parallel with each other at the connection portion of the support tube 7. Two rows of bottom reinforcing ribs 208 are integrally formed between the two rows of latitudinal reinforcing

ribs

112A, 112B and on the lower surface of the carriage plate 9 so as to protrude downward. The platform in fig. 24 and 25 is provided with two rows of the bottom reinforcing ribs 208, but the bottom reinforcing ribs 208 may be 1 row or 3 or more rows. Further, in the platform of the foundation frame in fig. 24 and 25, the connecting rib 110A is provided below the support tube 7 between the two rows of the

latitudinal reinforcement ribs

112A, 112B, and the bottom reinforcement rib 208 is connected to the connecting rib 110A. The platform is provided by integrally molding the two rows of

reinforcement ribs

112A, 112B, the connecting rib 110A, and the bottom reinforcement rib 208 with plastic.

Specifically, the connecting rib 110A is a part of the reinforcing rib 110 at the corner, and is integrally formed with the bottom surface 2A along the edge of the connecting portion between the support tube 7 and the carriage plate 9. Both ends of the connecting rib 110A are connected substantially perpendicularly to the two rows of

latitudinal reinforcement ribs

112A, 112B, that is, the connecting rib 110A is arranged parallel to the longitudinal direction of the carriage plate 9. The bottom reinforcement rib 208 is formed integrally with the carriage plate 9 and the connecting rib 110A by connecting one end of the bottom reinforcement rib 208 to the connecting rib 110A. In the figure, two rows of bottom reinforcement ribs 208 are provided at equal intervals on the platform 102. Further, the bottom reinforcement rib 208 is disposed in a posture parallel to the

latitudinal reinforcement ribs

112A, 112B. The length of the bottom rib 208 is not particularly limited, and is about 4 cm. However, if the length of the bottom reinforcing rib 208 is 3cm to 5cm, the balance of ease of manufacture, strength, and weight reduction can be achieved, which is preferable. The bottom rib 208 in fig. 24 and 25 is provided with one end connected to the connecting rib 110A, but may be configured with connecting ribs (not shown) provided at both ends of the bottom rib 208 and connected thereto. The number of the bottom reinforcing ribs 208 may be one or plural, and the plural number is preferable because the support tube 7 and the platform 102 can be firmly stabilized. The shock resistance and the bending strength in the lateral direction of the carriage surface 2 can be improved by the addition of the bottom reinforcement rib 208. In particular, by being disposed on the lower side of the support tube 7, stress that is likely to occur in the connection region between the support tube 7 and the carriage plate 9 can be relaxed, and a larger load can be supported, which is preferable. The bottom reinforcement rib 208 in the figure is made lower than the

latitudinal reinforcement ribs

112A, 112B, and is made wider than the latitudinal reinforcement ribs, thereby improving the strength. However, the bottom reinforcement rib 208 may have a height substantially equal to the height of the

latitudinal reinforcement ribs

112A, 112B. Further, the bottom reinforcement rib 208 is made high to improve the reinforcement effect, and the contact with the caster 6 can be avoided as high as the contact with the caster 6 is not achieved. Alternatively, similarly to the

latitudinal reinforcement ribs

112A, 112B, the portions other than the region where the wheels of the caster 6 rotate may be made higher and protrude outward, and the vertical width may be increased to enhance the reinforcement effect.

By providing the

latitudinal reinforcement ribs

112A, 112B and the bottom reinforcement rib 208 in this manner, the joint region 120 can be reinforced in multiple directions, and as a result, the strength of the base-and-frame can be effectively increased. Specifically, the

latitudinal reinforcement ribs

112A, 112B and the bottom reinforcement rib 208 are arranged in a plurality of rows substantially in parallel, and the framework can be made dense and strong at the corner of the platform 102 that is the joint area 120 between the support tube 7 and the carriage surface 2. In addition, by the structure in which the plurality of rows of the

latitudinal reinforcement ribs

112A, 112B and the bottom reinforcement rib 208 are provided separately, the base frame can be reinforced and the weight of the entire base frame can be reduced. The

latitudinal reinforcement ribs

112A, 112B have a thickness of 3 mm. However, the thickness may be set to 2mm to 4 mm. Further, the thickness of the bottom reinforcing floor 208 is about 5 mm. However, the thickness of the bottom reinforcing rib 208 may be set to 3mm to 10 mm. If the

latitudinal reinforcement ribs

112A, 112B and the bottom reinforcement rib 208 are too thin, the strength may be reduced, and if they are too thick, the cost of the components and the total weight of the base frame may increase.

The bag 500 may have a plurality of sizes of the rectangular placement plate 9. For example, fig. 28, 29, and 30 are bottom views of the tables 102 showing the

placement plates

200a, 200b, and 200c of various sizes. In these bottom views, the reinforcement protrusions 108 of the surrounding latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B and the bottom reinforcement rib 208 are clearly shown by being shaded with a grid. In the examples of fig. 28 to 30, the mounting surfaces of 3 sizes are shown, and in these 3 sizes, the length of the side in the longitudinal direction (y-axis direction) is equal, and the length of the side in the lateral direction (x-axis direction) is different. That is, the lateral side is short in fig. 28 and gradually becomes large in fig. 29 and 30. Specifically, the length of the longitudinal direction × transverse side is 261mm × 150mm in fig. 28, 261mm × 180mm in fig. 29, and 261mm × 210mm in fig. 30. However, the shape of the placing surface is not limited to the above-described dimensions, and it is needless to say that the placing surface may be wider or narrower than the described dimensions, and various kinds of bags may be detachably placed thereon.

As shown in fig. 28 to 30, the platform 102 includes a reinforcing rib 110 having a rectangular corner portion at each end of the short side of the bottom surface 2A and at the corner portion of the carriage plate 9. The corner reinforcing rib 110 includes a rear corner reinforcing rib 111A provided at one end of the short side of the carriage plate 9 along the edge of the connecting region between the carriage plate 9 and the support tube 7 so as to square the reinforcing rib 10, and a front corner reinforcing rib 111B provided at the other end of the short side. The reinforcement rib 111B at the front corner is formed in a square shape by the lateral

latitudinal reinforcement ribs

112A, 112B, the longitudinal reinforcement rib 122, and the reinforcement rib 10. The reinforcing rib 111A at the rear corner can reinforce the connection between the carriage plate 9 and the support tube 7 from the bottom surface side. Further, the peripheral latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B are arranged substantially in parallel with each other across the outer face of the reinforcement rib 111A at the rear corner. By arranging the reinforcement rib 111A at the rear corner portion between the two parallel rows of the

latitudinal reinforcement ribs

112A, 112B, the reinforcement rib 11A at the rear corner portion can be further reinforced, and the connecting region between the carriage plate 9 and the support tube 7 can be further reinforced on the bottom surface side.

Fig. 31 is a bottom view of the mounting table 102, showing a partially enlarged view of the bottom surface 2A. The front casters 6 are fixed at both ends of the long side of the bottom surface 2A, and preferably are spaced apart from each other to the maximum extent. This is because the bag 500 can stably stand by itself without falling down.

One end side of the surrounding latitudinal reinforcement rib 112A covers the side surface of the reinforcement rib 111A at the rear corner, and the other end side constitutes the reinforcement rib 111B at the front corner. Therefore, the reinforcement rib 111A at the rear corner is located at a position shifted inward (rightward in fig. 31) by the thickness w of the latitudinal reinforcement rib 112A. The reinforcing rib 111A at the rear corner and the reinforcing rib 111B at the front corner, which are located at the corners of the platform 102, are displaced in the longitudinal direction (y-axis direction). The inner latitudinal reinforcement rib 112B is provided at an inclination corresponding to the deviation in the arrangement of the reinforcement rib 111A at the rear corner and the reinforcement rib 111B at the front corner. As shown in fig. 31, the inner latitudinal reinforcement rib 112B has one end that covers and contacts the side surface of the reinforcement rib 111A at the rear corner and is inclined to the left as it goes downward in fig. 31, and the other end that constitutes side 1 of the reinforcement rib 111B at the front corner and is connected to the longitudinal reinforcement rib 122. In the example of fig. 31, no longitudinal reinforcing rib 10 is provided between the reinforcing rib 111A at the rear corner and the reinforcing rib 111B at the front corner, and the total weight of the platform 102 is reduced.

On the other hand, the table 102 of fig. 32 has a bridging rib 118 positioned in parallel with the connecting rib 110A, in addition to the structure of the table 102 of fig. 31. The bridging rib 118 is provided between the reinforcement rib 111A at the rear corner and the reinforcement rib 111B at the front corner, and is integrally formed with the bottom surface 2A. The bridging rib 118 is substantially orthogonal to the surrounding latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B, and bridges these

latitudinal reinforcement ribs

112A, 112B. The both ends of the bridging rib 118 are connected to the surrounding latitudinal reinforcement rib 112A and the inner latitudinal reinforcement rib 112B, respectively, so that the connection strength between the

latitudinal reinforcement ribs

112A, 112B and the bottom surface 2A can be increased. The inboard latitudinal reinforcement rib 112B may also intersect the bridging rib 118. The inner side latitudinal reinforcement rib 112B in fig. 32 has one end in contact with the side surface of the reinforcement rib 111A at the rear corner, and is linearly formed from the one end to the bridging rib 118 and connected to be orthogonal to the bridging rib 118. Further, the inner latitudinal reinforcement rib 112B is bent leftward from the connecting region with the bridge rib 118 toward the other end, and forms the 1 side of the reinforcement rib 111B at the front corner and is connected to the longitudinal reinforcement rib 122.

Further, the members of the platform 102, such as the platform plate 9, the reinforcement rib 10, the reinforcement protrusion 108, the

latitudinal reinforcement ribs

112A, 112B, the bottom reinforcement rib 208, and the bridging rib 118, may be connected to each other as separate members. Alternatively, at least two or more members may be integrally molded with plastic to improve strength. However, instead of plastic, light metal such as aluminum may be integrally molded to improve strength.

The method of connecting the caster to the reinforcement rib 110 fixed to the corner is not particularly limited. In the example of fig. 25, the reinforcement rib 110 at the corner has a recess that opens in one direction with the bottom surface 2A being the lowest surface. The recessed portion is closed and connected by a flat-plate caster base 115 (see fig. 26). Specifically, as shown in fig. 25, the reinforcement rib 110 at the corner has a hole edge 113 at four corners thereof. The caster base 115 is a plate surface having substantially the same shape as the rectangular shape of the reinforcing rib 110 at the corner, and has a through hole at a position substantially overlapping the position where the hole edge 113 is disposed when covering the recess of the reinforcing rib 110 at the corner. The caster base 115 is configured such that a coupling member such as a screw is fitted into the hole edge (ボス)113 through the through hole in a state where the reinforcement rib 110 at the corner is covered, and the caster base 115 is fixed to the mounting base 102. Further, the caster 6 is coupled to the caster base 115, or the caster 6 is coupled to the caster base 115 in advance, whereby the caster 6 can be coupled to the bottom surface 2A side of the mounting table 102 via the caster base 115.

In this way, by providing the reinforcing protrusion, the latitudinal reinforcing rib provided with the reinforcing protrusion, the bottom reinforcing rib, the bridging rib, or other reinforcing member on the bottom side of the platform 9 so as to extend along the side surface 2B, or to fill the gap of the reinforcing rib structure originally provided, it is possible to increase the strength of the platform 102 without limiting the placement position of the members located above the platform surface 2, such as the placement space of the bag body and the support tube. Further, the carriage plate 9 is provided with a reinforcing wall or a reinforcing base portion on the long side to which the support tube 7 is fixed. Further, by arranging the support tube 7, the reinforcing wall, the reinforcing base, and the like fixed to the upper side of the mounting plate 9 at one side of the mounting plate 9 in a collective manner, the mounting table 102 can be reinforced while securing a large mounting area of the bag body 3 without providing a barrier wall on the other side of the mounting surface 2. In this way, the caster-equipped bag can be stably self-supported by the structure in which the periphery of the support tube 7 is intensively reinforced above and below the mounting plate 9. Further, since the extendable rods can be disposed at both ends of the placement surface 2, the distance between the extendable rods can be sufficiently obtained, and the gripping area can be made longer. This makes it easy to grasp the handle and to control the moving direction of the bag.

Industrial applicability

The wheeled bag and the base frame constituting the same of the present invention can be preferably used in a carrier such as a bag or a cart, a walker, or the like.

Various modifications will be apparent to those skilled in the art from the description of the preferred embodiment of the invention herein. It should be understood that the present invention is not limited to the specific embodiments described above, but is only for illustrating the concept of the present invention and not for limiting the scope of the present invention, and all changes and modifications within the technical scope of the present invention defined by the claims are included in the scope of the present invention. The present application is based on and claims priority from application No. 2008-.

Claims

1. A bag with casters is characterized in that,

the disclosed device is provided with:

a pack main body; and

a base frame capable of carrying the bag main body;

wherein, above-mentioned basic frame has:

a mounting table having a mounting surface on which the pack body is detachably mounted;

a swivel caster fixed to a bottom surface of the mounting table facing the mounting surface, the swivel caster allowing the base frame to travel in a free direction;

a hollow support tube which is connected to one side of the mounting surface of the mounting table in a self-standing manner and protrudes substantially vertically upward;

a telescopic rod which is connected to the support tube in a self-supporting manner, can freely stretch and contract, and is provided with a handle at one end; and

a stopper for stopping the telescopic rod at an extended position;

the base frame is provided with two support cylinders on one side of the carrying surface, two telescopic rods are connected to the two support cylinders, and a handle is connected to the upper ends of the two telescopic rods;

the placing table has a flat plate-shaped placing plate with an upper surface as a placing surface;

connecting the support tube to extend from one side of the carrying plate to the upper part;

a horizontal reinforcing rib extending in a lateral direction perpendicular to the handle and protruding toward a lower surface of the mounting plate is integrally formed with the mounting plate in a horizontal plane including the mounting surface;

further, the latitudinal reinforcement rib projects downward in a region located below the support tube as a reinforcement projection, and the reinforcement projection is integrally formed with the latitudinal reinforcement rib,

the downward projecting amount of the latitudinal reinforcement rib is formed so that the reinforcing projecting portion is provided at the outer periphery of the joint surface between the support tube and the carriage surface, and is formed so that the projecting amount is maximum below the joint point where the carriage surface and the rising portion of the support tube are joined at a substantially right angle in a side view, and becomes smaller toward both sides thereof.

2. The wheeled case of claim 1,

the extendable rod is bent in a direction eccentric from one side of the mounting surface toward the center in a posture in which the handle is pulled up.

3. The wheeled case of claim 1,

the extendable rod is inclined from one side of the mounting surface toward the center in a posture in which the handle is extended.

4. The wheeled case of claim 1,

the support tube is connected to extend substantially upward from both end portions of one side of the carriage plate.

5. The wheeled case of claim 4,

the carrier plate is provided with two rows of latitudinal reinforcement ribs having reinforcement protrusions in parallel with each other around and inside the carrier plate, and is provided below a connecting portion between the carrier plate and the support tube.

6. The wheeled case of claim 5,

the platform is provided with 1 or more rows of bottom reinforcing ribs integrally formed between the two rows of the latitudinal reinforcing ribs and on the lower surface of the platform plate so as to protrude downward.

7. The wheeled case of claim 5,

the two rows of transverse reinforcing rib plates are inner transverse reinforcing rib plates and peripheral transverse reinforcing rib plates.

8. The wheeled case of claim 5,

the reinforcing protrusion is provided below a connection portion between the mounting surface and the support tube, and has a maximum protrusion amount below a point where the mounting surface and the rising portion of the support tube are joined at a substantially right angle in a side surface plan view of the outer periphery of a joining surface between the support tube and the mounting surface.

9. The wheeled case of claim 5,

the lower end of the reinforcing protrusion is located above the upper end of the wheel in the pivoting region of the swivel caster.

10. The wheeled case of claim 1,

the support tube is provided with a reinforcing wall in a rising portion from the mounting surface to the support tube, the reinforcing wall connecting the support tube and the mounting surface, the reinforcing wall being in a plane parallel to the handle and being disposed on a side edge of the mounting surface.

11. The wheeled case of claim 10,

the reinforcing wall is provided between the two support cylinders.

12. The wheeled case of claim 1,

the support tube has a reinforcing base portion protruding in a thickness direction of the reinforcing wall.

13. The wheeled case of claim 1,

the caster is positioned in a substantially vertical direction of the support tube.

14. The wheeled case of claim 1,

the support tube is provided at a corner of the mounting surface.

15. The wheeled case of claim 1,

the bag main body has an insertion band which is opened along the extension direction of the extension rod and can be inserted through the extension rod;

the expansion link is inserted into the insertion band, whereby the pack body is detachably configured with respect to the base frame.

16. The wheeled case of claim 1,

the height from the bottom surface of the caster to the handle is 60-100 cm in a state where the extendable rod is extended and stopped by the stopper.

17. The wheeled case of claim 1,

the extendable rod includes a guide tube fixed to the mounting surface in a posture of moving up and down, and a pull-out rod inserted into the guide tube so as to be able to move in and out, and a handle is fixed to an upper end of the pull-out rod.

18. The wheeled case of claim 17,

the upper ends of the two guide cylinders are connected by a connecting rod.

19. The wheeled case of claim 18,

the connecting rod has a connecting piece protruding upward on the surface facing the bag body, the bag body is provided with an insertion portion which is inserted through the connecting piece and connected to the connecting rod, and the connecting piece is inserted into the insertion portion to connect the bag body to the connecting rod.

20. The wheeled case of claim 1,

the expansion link has a connecting piece protruding upward on the surface facing the bag body, the bag body is provided with an insertion portion which is inserted through the connecting piece and connected to the expansion link, and the bag body is connected to the expansion link by inserting the connecting piece into the insertion portion.

21. A base frame capable of carrying a bag main body, characterized in that,

the disclosed device is provided with:

a stopper for stopping the telescopic rod at an extended position;

wherein,

the latitudinal reinforcement rib is provided as a reinforcement protrusion which protrudes downward from a region located below the support tube, the reinforcement protrusion is integrally formed with the latitudinal reinforcement rib,

22. The base frame of claim 21,

23. The base frame of claim 21,

24. The base frame of claim 21,

the support tube is connected to extend upward from both end portions of one side of the carriage plate, and the carriage plate is provided with two rows of latitudinal reinforcement ribs having reinforcement protrusions in parallel with each other around and inside the carriage plate and is provided below a connecting portion between the carriage plate and the support tube.

25. The base frame of claim 24,

26. The base frame of claim 24,

27. The belt base frame as in claim 24,

the latitudinal reinforcement rib is formed so as to have a reinforcing protrusion in a region from the carriage surface to a position close to the upright portion of the support tube, the reinforcing protrusion being formed so as to increase a downward protrusion of the latitudinal reinforcement rib.

28. The base frame of claim 24,

29. The base frame of claim 24,