HK1103287B - Stroller - Google Patents

Description

Children's vehicle

Technical Field

The present invention relates to a stroller that is foldable when not in use.

Background

In general, in a stroller used when an infant is taken outdoors to walk or buy things, various proposals have been made for a stroller that is folded as necessary to facilitate storage and carrying.

Fig. 11 is a perspective view showing an expanded state of a general structure of a conventional foldable stroller. As shown in fig. 11, the stroller includes: a pair of right and left front legs 2 having front wheels 1, a pair of right and left rear legs 4 having rear wheels 3, a hand push bar 5 bent in a substantially U-shape, a pair of right and left armrests 6, a front connecting member 7 also serving as a footrest, and the like. The hand push bar 5 has rear ends of armrests 6 pivotally attached to the left and right sides thereof, and front legs 2 pivotally attached to the front ends of the armrests 6. The left and right rear legs 4 are pivotally mounted at their upper ends to armrests 6, and the left and right legs 4 are coupled to each other by a rear coupling member 8. Further, the lower end portion of an L-shaped bracket 9 is pivotally attached to each rear leg 4, and the intermediate portion of the bracket 9 is pivotally attached to the lower end portion of the hand push lever 5. A locking piece 10 is attached to a lower end portion of the hand push lever 5 so as to be able to advance and retreat along the hand push lever 5, and the locking piece 10 is engaged with the other end of the L-shaped bracket 9.

Then, as shown in fig. 11, the stroller body can be held in a usable unfolded state by engaging the lock piece 10 provided at the distal end of the handle 5 with the bracket 9. In another aspect. By operating the operating lever 12 of the remote operating device 11 provided on the grip portion of the hand push lever 5, the lock piece 10 is disengaged from the bracket 9, and the armrest 6, the front leg 2, and the rear leg 4 can be swung, and the front leg 2 and the rear leg 4 can be folded into a two-folded state in which they are substantially parallel, and further into a three-folded state in which they are shaped like コ.

Patent document 1: JP-A6-37050

However, in the above-described stroller, the remote operation device 11 having a complicated structure with a large number of parts is provided in the handle 5 for the unfolding and folding operations, and therefore, there is a case where the stroller is not suitable for the downsizing, the refinement, or the weight reduction of the structure in accordance with the requirement of the portability. When the stroller is folded from the unfolded state, the operation lever 12 of the remote operation device 11 needs to be operated to disengage the lock piece 10 from the bracket 9, and the folding operation of the stroller body is performed in this state, and at least one hand cannot be separated from the remote operation device 11, which may affect the operability of the folding operation. In particular, in a stroller in which the structure is made compact, simplified, or lightweight in accordance with the demand for portability, if a pair of left and right L-shaped hand push bars are used instead of the U-shaped hand push bar, the remote control device cannot be provided on the hand push bar, and the operability is a problem.

Disclosure of Invention

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a stroller with a hood that can be easily folded or unfolded without providing the complicated remote operation device, has a self-supporting maintaining mechanism, and is further reduced in size, weight, and weight,

The present invention provides a stroller that can be freely folded, comprising: a pair of front legs having front wheels at lower ends thereof; a pair of rear legs having rear wheels at lower ends thereof; a hand push rod connected to the pair of rear legs; an L-shaped bracket, the lower end of which is connected to each leg part in a freely swinging manner, and the middle part of which is connected to the lower end of the hand push rod in a freely swinging manner; and a lock sleeve slidably attached to a lower end portion of the handle bar and having a lock piece, wherein a1 st recess is formed in a surface of the bracket facing the handle bar, the 1 st recess engages with the lock piece of the lock sleeve when the stroller is unfolded, and an elastic piece is provided in the vicinity of the 1 st recess of the bracket, the elastic piece engaging with the lock piece when the lock piece is disengaged from the 1 st recess, and the lock sleeve maintains a state in which the lock piece is disengaged from the 1 st recess.

The stroller of the present invention is characterized in that a cam portion that slides on a lock piece of the lock sleeve during rotation of the bracket is provided on a surface of the bracket facing the handle bar.

The stroller of the present invention is characterized in that at least one of the brackets is provided with a1 st recess on one side with respect to the intermediate portion, and a 2 nd recess on the other side with respect to the intermediate portion of the bracket, the 2 nd recess engaging with the lock piece of the lock sleeve when the stroller is folded.

The stroller of the present invention is characterized in that a pair of front legs and a push bar are connected by an X-shaped horizontal link.

The stroller of the present invention is characterized in that an elastic piece is provided at the front end of the bracket on the 1 st recess side, and the elastic piece is engaged with the locking piece of the locking sleeve after being disengaged from the 1 st recess.

The present invention provides a stroller that can be freely folded, comprising: a pair of front legs having front wheels at lower ends thereof; a pair of rear legs having rear wheels at lower ends thereof; and a hand push rod connected to the pair of rear legs, wherein the pair of front legs and the hand push rod are connected by an X-shaped horizontal link composed of 2 links, and a ground rod extending rearward of one of the horizontal links when the stroller is unfolded is provided, and the ground rod is grounded together with the pair of rear wheels when the stroller is folded.

The stroller of the present invention is characterized in that an L-shaped bracket is provided, a lower end of the bracket is swingably connected to the rear leg, an intermediate portion of the bracket is swingably connected to a lower end of the handle bar, and a lock sleeve having a lock piece engaged with the bracket is swingably attached to a lower end portion of the handle bar.

The stroller of the present invention is characterized in that a1 st recess which is engaged with the lock piece of the lock sleeve when the stroller is unfolded is provided on a surface of the bracket facing the handle.

The stroller of the present invention is characterized in that an elastic piece is provided in the vicinity of the 1 st recess of the bracket, and the elastic piece engages with the lock piece when the lock piece is disengaged from the 1 st recess, and maintains the state in which the lock piece is disengaged from the 1 st recess.

The baby carriage of the present invention is characterized by comprising: bassinet main part and install the hood on the bassinet main part, the hood has: a canopy frame mounting hub detachably mounted on a stroller body, an inverted U-shaped 1 st canopy frame fixedly connected to the canopy frame mounting hub, an inverted U-shaped 2 nd canopy frame swingably mounted on the canopy frame mounting hub with respect to the 1 st canopy frame, and a canopy cloth mounted on the 1 st canopy frame and the 2 nd canopy frame, wherein a1 st locking groove and a 2 nd locking groove provided at a predetermined angle with respect to the 1 st locking groove are provided on a side surface of the canopy frame mounting hub, and a locking piece selectively engaged with the 1 st locking groove or the 2 nd locking groove is provided on the 2 nd canopy frame.

The baby carriage is characterized in that the tent frame is made of wires.

The stroller of the present invention is characterized in that a 2 nd canopy frame is wound at a base end portion thereof around a shaft provided on a canopy frame mounting hub, and a locking piece selectively engaged with the 1 st locking groove or the 2 nd locking groove is provided at a tip end portion of the wound 2 nd canopy frame.

The baby carriage of the present invention is characterized in that the locking piece is arranged at the front end part of the No. 2 tent frame and is composed of a ring-shaped part formed by bending.

The present invention is configured as described above, so that when the stroller is folded from the unfolded state, if the left and right lock sleeves are pulled up further above the elastic pieces of the bracket, the lock pieces of the lock sleeves are locked to the upper portions of the elastic pieces of the bracket, and the state where the lock pieces are disengaged from the recesses of the bracket 27 is maintained. Therefore, in this state, the left and right hand push rods can be easily folded by pushing them forward. On the other hand, when the stroller is changed from the folded state to the unfolded state for use, the stroller can be unfolded only by pulling up the bracket-side lock sleeve formed with the 2 nd recessed portion, disengaging the lock piece of the lock sleeve from the 2 nd recessed portion of the bracket, lifting the handle upward, and pulling the handle portion of the hand push lever to the front side. Therefore, the number of parts is reduced, and the size, the fineness, and the weight of the stroller can be reduced without using a remote control device having a complicated structure.

The present invention is configured as described above, and therefore, the automatic ground contact state is achieved in conjunction with the folding operation of the stroller main body, and the front end portion of the ground contact rod and the left and right rear wheels can be grounded together in the folded state, and the self-standing of the stroller can be maintained. In addition, since the ground rod protrudes rearward from one of the 2 links in the unfolded state in which the stroller is used, the structure is simple, the number of parts is reduced, and the ground rod does not interfere with the traveling operation of the stroller.

The present invention is configured as described above, and therefore, it is not necessary to provide a link member that can be bent as in the case of the conventional roof, and positioning of the roof frame can be performed by the locking groove provided on the side surface of the hub and the locking piece provided on the roof frame, and the number of parts can be reduced and weight can be reduced. Further, since the connecting rod member is not used, the canopy frame can be constituted by a wire material such as a wire, the structure of the locking piece can be simplified, and further, the weight can be reduced.

Drawings

Fig. 1 is a rear side perspective view of the stroller of the present invention.

Fig. 2 is a rear view of the stroller of the present invention.

Fig. 3(a) and (b) are explanatory views of the operation of the rear connecting member.

Fig. 4 is a perspective view showing a structure of a coupling portion between the hand push bar and the rear leg according to the present invention.

Fig. 5 is a view showing the relationship between the handle and the bracket in the unfolded state of the stroller according to the present invention.

Fig. 6 is a view showing the relationship between the handle bar and the right side bracket when the stroller of the present invention is folded.

Fig. 7 is a view showing the relationship between the handle and the left side bracket when the stroller of the present invention is folded.

Fig. 8 is a side view of the stroller of the present invention in a folded configuration.

Fig. 9 is a side view of the stroller of the present invention in a folded configuration.

Fig. 10 is a view showing a state in which a part of the hood of the present invention is cut away.

Fig. 11 is a perspective view of a conventional stroller.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 and 2 are a schematic rear perspective view and a rear view of a stroller according to the present invention.

As shown in fig. 1 and 2, the stroller 20 includes a stroller body 20a and a roof 50 attached to the stroller body 20 a. The stroller body 20a includes: a pair of front legs 22, 22 having a front wheel 21 of a double-wheel structure at a lower end portion thereof; a pair of rear legs 24, 24 having a rear wheel 23 of a two-wheel structure at a lower end portion; a pair of push bars 25 in an inverted L shape connected to the pair of rear legs 24 and having a handle portion 25a bent forward at a distal end portion; and a handrail 26 connecting each front leg 22 and the corresponding hand push rod 25.

The pair of left and right hand push bars 25 are pivotally attached to rear end portions of the armrests 26, respectively, and pivotally attached to front portions of the left and right armrests 26 are distal end portions of the front legs 22, respectively. The tip end of the rear leg 24 is also pivotally mounted to the armrest 26 rearward of the pivotal mounting point of the front leg 22. One end of an L-shaped bracket 27 is pivotally attached to the rear leg 24 via a pin 28. The bracket 27 is pivotally mounted at its intermediate portion to the vicinity of the rear end portion of the hand lever 25 via a shaft 28. In the use state of the stroller, i.e., the unfolded state as shown in fig. 1, the lower end portion of the hand push bar 25 abuts against and engages with the rear leg 24, and the position of the rear leg 24 is regulated.

The left and right front legs 22 and the both-hand push rods 25 are connected by an X-shaped link 30 (horizontal link). That is, the X-shaped link 30 is configured by 2 links 30a and 30b pivotally attached to each other at substantially the center portion thereof and arranged in an X-shape so as to be expandable, and the rear end portions of the links 30a and 30b are pivotally attached to the lower end portion of the hand lever 25 via joints 31 so as to be rotatable about an axis orthogonal to the hand lever 25 and an axis orthogonal to the link 30a or 30 b. The front end portions of the links 30a and 30b are pivotally attached to the left and right front legs 22 via joints 32 so as to be rotatable about an axis orthogonal to the front legs 22 and an axis orthogonal to the links 30a and 30 b. Further, a ground rod 33 is provided to project rearward from one of the links 30a of the X-shaped links 30 in the unfolded state, and when the stroller 20 is folded, the front end of the ground rod 33 is grounded, so that the folded stroller can be held by itself together with the left and right rear wheels 23.

Further, the front end portions of the connecting rods 34 serving also as sheet supporting members are pivotally attached to the left and right front legs 22 via shafts 34a, and the rear end portions of the connecting rods 34 are pivotally attached to the left and right hand push bars 25 via shafts 35, respectively. Further, the left and right hand push rods 25 are connected to each other by an X-shaped link (vertical link) 36. That is, the X-shaped links 36 are also configured to be expandable by left and right X-shaped links 36a and 36b pivotally attached to each other substantially at their central portions, and the upper end portions of the links 36a and 36b are pivotally attached to the upper portion of the hand push lever 25 via the joint 37 so as to be rotatable about an axis perpendicular to the hand push lever 25 and an axis perpendicular to the links 36a and 36 b. The lower end portions of the links 36a, 36b are pivotally attached to the lower end portions of the left and right hand levers 25 via joints 38 so as to be rotatable about an axis orthogonal to the hand lever 25 and an axis orthogonal to the links 36a, 36 b.

On the other hand, lower portions of the left and right front legs 22 are connected by a step 39 made of an elastic material, and the left and right rear legs 24 are connected by a rear leg connecting member 40 bendable downward at an intermediate portion. As shown in fig. 3(a) and (b), the rear connecting member 40 is constituted by 2 connecting rods 40a and 40b, and pivotally attached to each other by a pin 41 so as to be swingable. A lock member 42 having an operation piece 42a projecting therefrom is fitted slidably in the axial direction to one of the connecting rods 40 a. That is, a long hole 40a1 is formed in the connecting rod 40a, a pin 42b protruding from the lock member 42 is engaged with the long hole 40a1, and the lock member 42 is biased in the direction of the other connecting rod 40b by a spring 42c provided between the pin 42b and a spring receiving portion 43 provided in the connecting rod 40 a. On the other hand, a notch 44 is formed at the tip of the connecting rod 40b, and when the connecting rods 40a and 40b are aligned with each other, the pin 42b of the lock member 42 is engaged with the notch 44. Then, as shown in fig. 3(a), when the two coupling rods 40a and 40b are on the same line, the lock member 42 is moved in the rightward direction in the figure by the spring 42c, and is fitted to both the coupling rods 40a and 40b, whereby both the coupling rods 40a and 40b are locked. On the other hand, when the lock member 42 is moved leftward in the figure against the spring 42c via the operation piece 42a, the lock of the lock member 42 is released, and both the connection rods 40a and 40b are bent downward as shown in fig. 3 (b).

Fig. 4 is an enlarged view showing the structure of the right bracket 27, and an elastic piece 27a bent in the direction of the hand push rod 25 is formed at the end of the bracket 27 opposite to the pivot mounting portion 28 between the rear legs 24.

On the other hand, a lock sleeve 45 provided with an operation claw 45a is slidably fitted to a lower end portion of the hand push lever 25, and is biased downward by a sleeve not shown. The lock sleeve 45 is provided with a lock piece 45b (fig. 5) that can be engaged with an engagement recess (described later) formed in the bracket 27, and when the lock sleeve 45 is pulled upward against the urging force of a spring, the lower end of the lock piece 45b is locked to the upper portion of the elastic piece 27a of the bracket 27.

As shown in fig. 5, a cam portion 46 is formed integrally with a surface of the bracket 27 facing the handle 25, and a1 st recess 46a that engages with the lock piece 45b when the stroller is unfolded is formed in the cam portion 46. A 2 nd recess 46b that engages with the lock piece 45b when the stroller is folded is formed in the cam portion 46 of one of the left and right brackets 27, for example, the bracket 27 on the right side in the traveling direction of the stroller.

In this case, the 1 st recess 46a is provided on one side of the shaft 29 of the bracket 27, the 2 nd recess 46b is provided on the other side of the shaft 29 of the bracket 27, and the elastic piece 27a of the bracket 27 is located in the vicinity of the 1 st recess 46a, i.e., on the front end side of the 1 st recess 46 a.

Then, when the stroller is folded from the unfolded state shown in fig. 1 and 2, the left and right lock sleeves 45 are pulled up to the upper side of the elastic pieces 27a of the bracket 27, the lock pieces 45b of the lock sleeves 45 are locked to the upper portions of the elastic pieces 27a of the bracket 27 (see the chain line in fig. 4), and the lock pieces 45b are held in a state of being disengaged from the 1 st recess 46a of the bracket 27.

Then, the lock member 42 of the rear coupling member 40 is moved in a direction to be disengaged from the coupling rod 40b, the coupling portions of the coupling rods 40a and 40b are pushed down by the feet or the like, and the left and right hand levers 25 are pushed forward, whereby the bracket 27 is rotated clockwise in fig. 1 about the pivot attachment point 29 with respect to the hand lever 25, and the hand lever 25 is moved downward with respect to the rear leg 24. Therefore, by the movement of the hand push lever 25, the armrest 26 and the link 34 are swung upward about the pivotal mounting point with the hand push lever 25, respectively, and thereby the front leg 22 and the rear leg 24 are moved in the direction approaching each other, and the size of the stroller in the front-rear direction is reduced. At the same time, the X-shaped links 30 and 36 are moved in the closing direction in response to the swinging of the armrest 26 and the connecting link 34, whereby the left and right front legs 22, the rear leg 24, and the hand push lever 25 move in the direction approaching each other, and the size of the stroller in the lateral direction is reduced. At the same time, the rear connecting member 40 is bent downward and the step plate 39 is bent upward, so that the approach of the leg portion or the like is not obstructed. When the folded state is achieved, as shown in fig. 6, the locking piece 45b of the lock sleeve 45 engages with the 2 nd recessed portion 46b of the right bracket 27, and the folded state is maintained. In this case, since the 2 nd recessed portion is not provided in the left bracket 27, the lock piece 45b of the left lock sleeve 45 abuts only the cam portion of the cam portion 46 as shown in fig. 7. Fig. 8 shows a side view of the folded stroller and fig. 9 shows a rear view thereof. In the folded state, the ground contact rod 33 extends downward as shown in fig. 9, and the stroller can be supported at 3 points, i.e., the left and right rear wheels 23 and the ground contact rod 33, and can stand on the floor or the ground.

On the other hand, when the state is changed from the folded state to the unfolded state for use, the right lock sleeve 45 is pulled up, the lock piece 45b of the lock sleeve 45 is disengaged from the 2 nd recessed portion 46b of the bracket 27, and the handle portion 25a of the hand push lever 25 is pulled forward while the hand push lever 25 is lifted upward. At this time, the left and right legs move away from each other, and the front wheels 21 and the rear wheels 23 move away from each other, and the unfolded state shown in fig. 1 is obtained. In this case, the lower end portion of the hand push lever 25 abuts on the rear leg 24, the locking piece 45b of the locking sleeve is engaged with the 1 st recess 46a of the bracket 27, the positional relationship between the rear leg 24 and the hand push lever 25 is fixed, and the coupling levers 40a and 40b are locked on a straight line by the locking member 42 of the rear coupling member 40, thereby maintaining the unfolded state of the stroller.

As shown in fig. 1, a retractable roof 50 is detachably attached to the hand push bar 25 of the stroller main body 20 a. Fig. 10 is a perspective view of a canopy frame attachment hub portion on the right side of the canopy 50, and the canopy frame attachment hub 51 has a substantially fan-shaped side surface, and an attachment portion 51a to the hand push lever 25 is provided at a front edge portion thereof in a protruding manner. The attachment portion 51a is formed with a recess (not shown) that engages with a locking piece 52 provided on the hand push lever 25 from above along the hand push lever 25, and is integrally provided with a hook portion 53 for coming-off prevention on a side surface thereof that can engage with a projection 52a provided on a lower end of the locking piece 52 on the hand push lever 25.

Further, a base end portion of a1 st canopy frame 54 made of a wire bent in an inverted U shape is fixedly attached to a rear edge side of the canopy frame attaching hub 51, and a base end portion of a 2 nd canopy frame 55 made of a wire bent in an inverted U shape is pivotally attached to a base portion of the canopy frame attaching hub 51 within a predetermined range. That is, a1 st locking groove 56 extending in a radial direction along the 1 st hood 54 is formed on a side surface of the hub 51, and a 2 nd locking groove 57 extending in the radial direction at a predetermined angle with respect to the 1 st locking groove 56 is formed. On the other hand, the 2 nd canopy frame 55 has a base end portion wound around a shaft 58 provided on the hub 51, and a link-shaped locking piece 55a selectively engaged with the 1 st locking groove 56 or the 2 nd locking groove 57 is provided at a wound tip end portion. A tent cloth 59 is provided between the 1 st tent frame 54 and the 2 nd tent frame 55.

Then, the attaching portion 51a of the canopy attachment hub 51 of the canopy 50 is attached to the hand push rod 25 by engaging the engaging piece 52 provided on the hand push rod 25. Next, the canopy 59 can be folded by engaging the locking piece 55a of the 2 nd canopy frame 55 with the 1 st locking groove 56, or the canopy 59 can be set to the unfolded state by swinging the 2 nd canopy frame 55 forward and engaging the locking piece 55a with the 2 nd locking groove 57.

Claims (5)

1. A stroller which can be folded freely, comprising:

a pair of front legs having front wheels at lower ends thereof;

a pair of rear legs having rear wheels at lower ends thereof;

a pair of left and right hand push rods, each of the left and right hand push rods being connected to one of the rear legs on the same side;

a pair of L-shaped brackets, the lower end of each L-shaped bracket is connected to one rear leg on the same side in a free swinging manner, and the middle part of each L-shaped bracket is connected to the lower end of one hand push rod on the same side in a free swinging manner;

a pair of locking sleeves slidably mounted on the lower end of the handle bar and having locking pieces;

a1 st recess is formed on a surface of the bracket facing the handle bar, the 1 st recess engages with the locking piece of the locking sleeve when the stroller is unfolded, and an elastic piece is provided near the 1 st recess of the bracket, the elastic piece engages with the locking piece when the locking piece is disengaged from the 1 st recess, and the state after the locking piece is disengaged from the 1 st recess is maintained.

2. A stroller according to claim 1, wherein a cam portion which slides with the lock piece of the lock sleeve in rotation of the bracket is provided on a face of the bracket facing the handle bar.

3. A stroller according to claim 1, wherein at least one of the L-shaped brackets is provided with a1 st recess on one side of an intermediate portion thereof, and a 2 nd recess on the other side of the intermediate portion thereof, the recess engaging with the lock piece of the lock sleeve when the stroller is folded.

4. A stroller according to claim 1, wherein the pair of front legs and the handle bar are connected by an X-shaped horizontal link.

5. A stroller according to claim 1, wherein an elastic piece is provided at a front end of the bracket on the 1 st recess side, and the elastic piece engages with the lock piece of the lock sleeve disengaged from the 1 st recess.