CN1640774B - collapsible container - Google Patents

Abstract

The unlocking mechanism to release the mutual locking between two adjacent side walls is set on one side wall, and consists of ejecting members with ejecting parts to bend the clamping elastic sheet on the other side wall and operating members to shift the ejecting parts in once operation. The unlocking mechanism in the said structure has raised operation performance of releasing the mutual locking of the locking mechanism for adjacent side walls.

Description

collapsible container

technical field

The invention relates to a collapsible container in which side walls arranged around a bottom can be folded to overlap the bottom.

Background technique

In the prior art, a known collapsible container consists of long side walls connected by hinge members at opposite long sides of a bottom formed in a substantially rectangular planar shape, and also at opposite short sides of the bottom by hinges. The connected short side walls are formed by erecting the short side walls and the long side walls approximately vertically relative to the bottom and assembling into a box shape, and at the same time, when folding, the long side walls and the short side walls are overlapped on the bottom to be folded. When assembled into a box shape, the long side walls or the short side walls are locked to each other by a locking mechanism in such a way that they do not fall toward the bottom. The locking mechanism has an elastic plate-shaped body formed on the long side wall or the short side wall and formed with a convex protrusion at the front end. When assembled into a box shape, the convex protrusion formed on the plate-shaped body It abuts against the inner wall surface of one side wall on which no plate-shaped body is formed, so that the side wall does not fall toward the bottom.

In the existing collapsible container of this kind, in order to release the locked state of the locking mechanism configured to prevent the long side wall and the short side wall from falling down toward the bottom, it is necessary to put one's hand into the inside of the collapsible container assembled into a box shape. Since the locked state of the locking mechanism is released, there is a problem that the operability of releasing the locked state of the locking mechanism is poor.

Also, even when the locking mechanisms are arranged outside the collapsible container, it is necessary to move the pair of locking mechanisms with both hands, and there is a problem that the unlocking work cannot be performed quickly.

The purpose of the present invention is to solve the problems existing in the above-mentioned existing foldable containers.

Contents of the invention

In order to achieve the above object, the present invention has a bottom and four side walls connected to the bottom by hinge members, and in a collapsible container that can be folded so that the side walls overlap the bottom, first, it is used to unlock the adjacent adjacent The unlocking mechanism of the locked state of the locking mechanism between the side walls is arranged on one of the opposing side walls, and the locking elastic piece formed on the other opposing side wall is formed on the other. member, and the operation member that can make the push-out part of the above-mentioned push-out member move by a single operation action constitutes the aforementioned unlocking mechanism; second, by moving the operation member up and down, the push-out part of the push-out member is moved; Moving the operating member toward the side wall to move the pushing portion of the pushing member; fourthly, rotating the operating member to move the pushing portion of the pushing member.

Description of drawings

Fig. 1 is a perspective view of a state in which the foldable container of the present invention is assembled into a box shape.

Fig. 2 is a perspective view during assembly of the foldable container of the present invention.

Fig. 3 is a perspective view of the folded state of the foldable container of the present invention.

Fig. 4 is an exploded perspective view of the unlocking mechanism disposed on the short side wall of the collapsible container of the present invention.

Fig. 5 is a partial perspective view of the short side wall of the collapsible container of the present invention.

Fig. 6 is a partial horizontal cross-sectional view near a corner of a foldable container according to the present invention assembled into a box shape.

Fig. 7 is a front view of the short side wall side of the collapsible container of the present invention.

Figure 8 is also a front view of the short side wall side of the collapsible container of the present invention.

Fig. 9 is a partial horizontal cross-sectional view of the vicinity of corners in a state where the foldable container of the present invention is assembled in a box shape similarly to Fig. 6 .

Fig. 10 is a partial perspective view of the collapsible container according to the present invention in a state in which the short side walls of the collapsible container are rotating.

Fig. 11 is an exploded perspective view of an unlocking mechanism disposed on a short side wall of a collapsible container according to another embodiment of the present invention.

Fig. 12 is an exploded perspective view of the unlocking mechanism shown in Fig. 11 .

Fig. 13 is a partial perspective view of the short side wall of the foldable container shown in Fig. 11 according to another embodiment of the present invention.

Fig. 14 is also a partial perspective view of the short side wall of the foldable container shown in Fig. 11 according to another embodiment of the present invention.

Fig. 15 is an exploded perspective view of an unlocking mechanism provided on a short side wall of a collapsible container according to another embodiment of the present invention.

Fig. 16 is a partial perspective view of the short side wall of the foldable container shown in Fig. 15 according to another embodiment of the present invention.

Fig. 17 is a front view of the short side wall side of the collapsible container according to another embodiment of the present invention shown in Fig. 15 .

Fig. 18 is also a front view of the short side wall side of the collapsible container according to another embodiment of the present invention shown in Fig. 15 .

Detailed ways

An example of the present invention will be described below, but it is not limited to this example unless the gist of the present invention is exceeded.

The overall structure of the foldable container of the present invention is composed of a bottom 1, opposite long side walls 2 connected to the bottom 1 by hinges, and opposite short side walls 3 also connected to the bottom 1 by hinges. From the assembled box-shaped state shown in FIG. 1, first, as shown in FIG. The short side walls 3 of the container can be folded to a low, compact state as shown in FIG. 3 . In addition, if from the state shown in FIG. 3 , the long side wall is erected approximately vertically, and then the short side wall 3 is erected approximately vertically, the folded foldable container can be assembled as shown in FIG. 1 . box shape.

Firstly, the long sidewall 2 is mainly described with reference to FIG. 1 , FIG. 3 and FIG. 6 .

The long side wall 2 has a horizontally long substantially rectangular plate-shaped portion 2a, and two vertical ends of the long side wall 2 are formed with a vertically long wall that is approximately perpendicular to the plate-shaped portion 2a and extends along the inner wall surface direction of the long side wall 2. In the coupling portion 2b, an appropriate number of fitting holes 2b1 (three fitting holes 2b1 are formed in this embodiment) substantially parallel to the plate portion 2a are formed at predetermined intervals in the vertical direction on the coupling portion 2b.

U-shaped slits 2c are respectively formed near the corners of the upper ends of the plate-like portion 2a of the long side wall 2. By forming the U-shaped slits 2c, the portion surrounded by the slits 2c forms a cantilever shape extending in the horizontal direction. The locking elastic piece 2d. A locking protruding portion 2d1 is protruded from the inner wall side front end of the locking elastic piece 2d, and the coupling portion 2b side of the locking protrusion 2d1 is formed as a vertical surface 2d2 substantially parallel to the surface 2b2 on the inner wall side of the coupling portion 2b. At the same time, an inclined surface 2d3 is formed on the locking protrusion 2d1 from the vertical surface 2d2 to the inner wall surface of the long side wall 2 . In addition, the locking protrusion 2d1 of the locking elastic piece is formed such that its tip protrudes from the inner wall surface of the long side wall 2 by a predetermined amount.

Next, the short side wall 3 will be described with reference to FIGS. 1 , 2 and 4-6 .

The short side wall 3 has a horizontally elongated substantially rectangular plate-like portion 3a. On the plate-like portion 3a, along the upper and lower end edges and the left and right end edges of the plate-like portion 3a, a vertical wall is formed perpendicular to the surface of the plate-like portion 3a. Extended peripheral rib 3b. A lengthwise protruding portion 3c is formed outside the substantially vertical side portion 3b1 forming the peripheral rib 3b, and an appropriate number of fitting protrusions 3c1 (in this embodiment, corresponding to The three engaging holes 2b1 formed in the coupling portion 2b are formed with three engaging protrusions 3c1). The fitting protrusion 3c1 is configured to be inserted into a fitting hole 2b1 formed in the coupling portion 2b of the above-mentioned long side wall 2 .

Below the upper horizontal portion 3b2 of the peripheral rib 3b constituting the short side wall 3, horizontal ribs 3d parallel to the upper horizontal portion 3b2 are formed at predetermined intervals to connect the opposing side portions 3b1. In an area (hereinafter referred to as an unlocking mechanism arrangement area) R1 surrounded by the upper horizontal portion 3b2 constituting the peripheral rib 3b, the opposite side portion 3b1, and the horizontal rib 3d (hereinafter referred to as the unlocking mechanism arrangement area) R1, there is arranged a An unlocking mechanism is constituted by a push-out member of the locking elastic piece 2d on the long side wall 2 and an operation member for moving the push-out member.

3e is a pair of vertical frames vertically arranged near both ends of the upper horizontal portion 3b2 of the peripheral rib 3b forming the short side wall 3 and extending to the vicinity of the horizontal rib 3d; 3f is a connecting vertical frame, 3e and the horizontal frame. The rib 3d is a guide plate with a predetermined gap between the rib 3d and the plate-like portion 3a.

3g is a locking piece protruding from the outer surface 3a1 of the plate-shaped portion 3a at the center of the short side 3 than the vertical frame 3e vertically installed near both ends of the lower surface of the upper horizontal portion 3b2 constituting the peripheral rib 3b. The locking piece 3g has a plate-shaped portion 3g1 and a wedge-shaped portion 3g2 formed at the front end of the plate-shaped portion 3g1. 3h is a vertical guide formed at the approximate center of the outer surface 3a1 of the plate-shaped portion 3a of the short side wall 3. One protrusion is formed for bridging the vertical frame 3e and the horizontal rib 3d. The locking piece 3g and the guide protrusion 3h are arranged in the unlocking mechanism arrangement area R1 surrounded by the upper horizontal part 3b2 constituting the peripheral rib 3b, the opposite side part 3b1 and the horizontal rib 3d; The frame 3e, the guide plate 3f, and the coupling piece 3g are arranged in a pair at line-symmetrical positions with a guide protrusion 3h integrally formed in the approximate center of the outer surface 3a1 of the plate-shaped portion 3a. 3i is a corner guide plate formed at the corner formed by the vertical wall 3e1 near the center of the short side wall 3 of the vertical frame 3e and the lower surface of the upper horizontal part 3b2. 3j is formed of a vertical portion 3j1 hanging down from the lower surface of the upper horizontal portion 3b2 on the side portion 3b1 of the peripheral rib 3b, and a vertical portion 3j1 inclined downward from the lower end of the vertical portion 3j1 toward the side portion 3b1 of the peripheral rib 3b, and connected to the side. The inclined portion 3j2 of the portion 3b1 constitutes an elastic piece abutting frame against which an elastic piece is formed on a push-out member constituting an unlocking mechanism described later. In addition, 3k is a slit located between the inclined portion 3j2 of the elastic strip abutting against the frame 3j and the horizontal rib 3d, and passing through the side portion 3b1 of the peripheral rib 3b.

Furthermore, the locking elastic piece 2d formed on the above-mentioned long side wall 2 and the joint part 2b and the protruding part 3c of the short side wall 3 constitute a locking mechanism that prevents the rotation of the substantially vertical short side wall 3 toward the bottom 1. .

Next, the push-out member and the operating member constituting the unlocking mechanism will be described mainly with reference to FIGS. 4 to 7 .

Reference numeral 4 denotes an ejection member, and the ejection member 4 has a main body block 4a having a substantially square front shape, and an inclined surface 4a1 inclined downward is formed on one side of the main body block 4a. A horizontally long and vertical plate-shaped push-out piece 4b extends from the lower end of the inclined surface 4a1. In addition, an elastic strip 4d inclined toward the body block 4a is formed on the horizontal plate 4c extending from the lower end of the inclined surface 4a1. . The push-out member 4 having the above configuration is integrally formed of synthetic resin.

5 is an operation member, and the operation member 5 has a horizontally long main body block part 5a, and the operation body 5b extended outward from the opposing vertical side wall part 5a1 of the main body block part 5a. The height H1 of the body block portion 5a is formed to be lower than the distance D1 between the upper horizontal portion 3b2 of the peripheral rib 3b constituting the short side wall 3 and the horizontal rib 3d. The operating body 5b is formed thinner than the thickness of the body block portion 5a. The operation part 5b is composed of a flat upper horizontal part 5b1 extending horizontally from the upper and lower ends of the vertical side wall part 5a1 of the main body block part 5a, a flat lower horizontal part 5b2 shorter than the upper horizontal part 5b1, and a connecting upper horizontal part. The front end of 5b1 and the curved plate-shaped cam part 5b3 at the front end of the lower horizontal part 5b2 are comprised. The cam part 5b3 is formed by an upper vertical part 5b3' and a lower inner curved part 5b3". A vertically long concave groove 5c is formed in the approximate center of the back panel 5a2 of the main body block part 5a; the concave groove 5c is inserted and formed at the position of the above-mentioned release. The guide protrusion 3h at the approximate center of the outer surface 3a1 of the plate-shaped portion 3a in the locking mechanism arrangement region R1. 5d is a longitudinal slit formed at a symmetrical position on the back panel 5a2 of the main body block 5a with the groove 5c interposed therebetween. , The longitudinal slit 5d is formed along the substantially full height of the rear panel 5a2.

In order to arrange the push-out member 4 and the operation member 5 constituting the unlocking mechanism on the short side wall 3, first, the push-out member 4 is inserted into the gap between the guide plate 3f formed on the short side wall 3 and the plate-like portion 3a, and at the same time The push-out piece 4b located at the front end of the push-out member is inserted into the slit 3k formed on the side portion 3b1 constituting the peripheral rib 3b. When the ejection piece 4b of the ejection member 4 is inserted into the slit 3k formed in the side portion 3b1 of the short side wall 3, the body block portion 4a of the ejection member 4 is inserted into the gap between the guide plate 3f formed on the short side wall 3 and the plate-like portion 3a. gap. Thus, the pair of pushing members 4 can be arranged near both ends of the unlocking mechanism arrangement region R1 surrounded by the upper horizontal portion 3b2 constituting the peripheral rib 3b, the opposite side portion 3b1, and the horizontal rib 3b.

Next, an operation member 5 is installed in the central area of the unlocking mechanism arrangement area R1 between the pair of push-out members 4, and the locking piece 3g formed in the unlocking mechanism arrangement area R1 of the short side wall 3 is Insert the pair of longitudinal slits 5d formed in the operation member 5 so that the plate-shaped portion 3g1 of the locking piece 3g is located in the slit 5d, and the wedge-shaped portion 3g2 protrudes from the slit 5d, and the operation member 5 is attached to the short side wall 3 . Furthermore, as will be described later, when the operation member 5 is moved up and down, the locking piece 3g is guided up and down within the slit 5d. In addition, when attaching the operation member 5 to the short side wall 3, the guide protrusion 3h formed in the approximate center of the outer surface 3a1 of the plate-like portion 3a, which is located in the unlocking mechanism arrangement region R1, is inserted into the operation member 5. The longitudinal groove 5c of the back panel 5a2 of the member 5.

As described above, a pair of push-out members 4 are arranged near the left and right ends of the unlock mechanism arrangement region R1 of the short side wall 3 , and at the center of the unlock mechanism arrangement region R1 and between the pair of push members 4 . One operating member 5 is arranged between the pushing members 4 , whereby the pushing member 4 and the operating member 5 constituting the unlocking mechanism are arranged on the short side wall 3 . When the pushing member 4 and the operating member 5 constituting the unlocking mechanism are arranged on the short side wall 3, as shown in FIG. In this state, the push piece 4b of the push member 4 is at the introduction position as shown in FIG. The strip 4d abuts against the elastic strip abutting frame 3j of the short side wall 3, and the push member 4 is elastically pressed toward the operating member 5 by its reaction force. In addition, the short side wall 3 is provided with a configuration unlocking When pushing out member 4 and operating member 5 of the mechanism, as shown in FIG. 3i is formed at the corner formed by the vertical wall 3e1 of the vertical frame 3e of the short side wall 3 and the upper horizontal part 3b2.

In order to assemble the foldable container from the folded state shown in FIG. 3 into the box shape shown in FIG. 1 , first, the long side walls 2 in the substantially horizontal state are rotated to the vertical direction, and stand up roughly vertically as shown in FIG. 2 . Next, the short side wall 3 folded over the bottom 1 is turned from a substantially horizontal state to a vertical direction, so that, as shown in FIG. When the joint part 2b approaches, when the short side wall 3 is rotated in the vertical direction, the end vertical surface 3c2 of the protruding part 3c of the short side wall 3 pushes the locking elastic piece protruding from the inner wall surface of the long side wall 2 The locking protrusion 2d1 of 2d overcomes the elasticity of the locking elastic piece 2d, and bends the locking elastic piece 2d outward. When the short side wall 3 is rotated in the vertical direction, the fitting protrusion 3c1 protruding from the protruding portion 3c of the short side wall 3 is inserted into the fitting hole 2b1 formed in the joint portion of the long side wall 2 . During the process of inserting the fitting protrusion 3c1 of the protruding portion 3c of the short side wall 3 into the fitting hole 2b1 formed in the joint portion 2b of the long side wall 2, the locking elastic piece 2d formed on the long side wall 2 The locking protrusion 2d1 is disengaged from the end vertical surface 3c2 of the protruding portion 3c of the short side wall 3, and the locking elastic piece 2d returns to its original position as shown in FIG. 6 by its elasticity, and the locking elastic piece 2d The vertical surface 2d2 of the short side wall 3 abuts against the rear panel portion 3c3 of the protruding portion 3c. Therefore, even if the short side wall 3 is to be rotated toward the bottom 1, the protruding portion 3c of the short side wall 3 abuts against the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2, thereby preventing it. Turn toward the bottom 1; even if a load is applied to the short side wall 3 from the outside, it will not fall in the direction of the bottom 1. Similarly, the other short side wall 3 can be turned from a substantially horizontal state to a vertical direction to assemble the foldable container into a box shape.

As described above, when the foldable container is assembled into a box shape, the upper corner 4a2 on the operation member 5 side of the main body block 4a of the pushing member 4 in the unlocking mechanism arrangement region R1 of the short side wall 3 is arranged, As shown in FIG. 7, by the reaction force of the elastic strip 4d of the elastic strip abutting against the frame 3j of the short side wall 3, it abuts against the lower inner curved portion 5b3" of the cam portion 5b3 constituting the operating member 5; In addition, as shown in FIG. 6 , the push-out piece 4 b of the push-out member 4 is introduced without protruding from the protruding portion 3 c of the short side wall 3 , and at the same time, is located close to the locking elastic piece 2 d formed on the long side wall 2 . Furthermore, the upper surface 5' of the operation member 5 disposed in the unlocking mechanism arrangement region R1 of the short side wall 3 is located close to the upper horizontal portion 3b2 of the peripheral rib 3b constituting the short side wall 3 .

When folding the foldable container assembled into a box shape, the operation member 5 arranged in the unlocking mechanism arrangement region R1 of the short side wall 3 is lowered. By the lowering operation of the operation member 5, as shown in FIG. 8, the upper vertical portion 5b' of the cam portion 5b3 abuts against the vertical surface 4a3 of the body block portion 4a of the ejection member 4 on the opposite side to the inclined surface 4a1, The push-out member 4 is moved horizontally in the direction of the locking elastic piece 2 d formed on the long side wall 2 . By means of the horizontal movement of the push-out member 4 to the direction of the locking elastic piece 2d caused by the descending operation of the operating member 5, as shown in FIG. The locking protrusion 2d1 of the piece 2d is pushed away from the protruding portion 3c of the short sidewall 3, that is, pushed outward, so that the connecting elastic piece 2d of the long sidewall 2 bends against its elasticity. When the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the protruding part 3c of the short side wall 3, the short side wall 3 is rotated toward the bottom 1, so that a pair of opposing The short side walls 3 overlap the bottom 1 . Next, the folded container assembled into a box shape can be folded by overlapping the pair of opposing long side walls 2 on the pair of opposing short side walls 3 overlapping the bottom 1 .

After the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the protruding part 3c of the short side wall 3, the operating member 5 is raised at an appropriate time, and the body block of the push-out member 4 is pushed up. The upper corner portion 4a2 of the operating member 5 side of the portion 4a is located at the lower inner curved portion 5b3" of the cam portion 5b3 constituting the operating member 5. The push-out member 4 is often abutted by the elastic strip that abuts against the short side wall 3. The reaction force of the elastic strip 4d of the frame 3j is elastically pressed in the direction of the operation member 5, so that, as shown in FIG. The lower inner curved portion 5b3” of the cam portion 5b3 of 5.

When performing the unlocking operation of the long side wall 2 and the short side wall 3, as described above, the operation member 5 moves up and down in the unlocking mechanism installation area R1, but the operation member 5 is configured to be located in the unlocking mechanism installation area. The guide tip 3h formed in the approximate center of the plate-shaped portion 3a of the short side wall 3 in R1 is inserted into the longitudinal groove 5c formed in the back plate 5a2 of the operation member 5 and guided, and the operation of the operation member 5 The body 5b is configured to be inserted into and guided by the gap formed by the corner guide plate 3i and the plate-like portion 3a formed at the corner portion formed by the vertical wall 3e1 of the vertical frame 3e of the short side wall 3 and the upper horizontal portion. 3b2; in addition, since the plate portion 3g1 of the locking piece 3g protruding from the plate portion 3a of the short side wall 3 is inserted into the slit 5d provided on the back panel 5a2 of the operation member 5 and guided, even The operation member 5 moves up and down without shaking in the lateral direction (horizontal direction), so that the movement amount of the pair of push-out members 4 can be correctly performed without being different, and the movement of the pair of push-out members 4 by the operation member 5 can be carried out quickly and reliably. of the mobile.

As mentioned above, when folding a foldable container that has been assembled into a box shape, the long side can be unlocked by simply moving up the operating member 5 located in the unlocking mechanism arrangement area R1 of the short side wall 3 once. The locked state of the locking elastic piece 2d of the wall 2 and the protruding portion 3c of the short side wall 3 can improve the workability of releasing the locked state of the long side wall 2 and the short side wall 3 .

In addition, since the push member 4 is elastically urged toward the operation member 5 by the reaction force of the elastic strip 4d of the elastic strip abutting against the frame 3j of the short side wall 3, the body block portion 4a of the ejecting member 4 always abuts against it. The cam 5b3 of the operating member 5. Therefore, the push-out piece 4b of the push-out member 4 is introduced from the end vertical surface 3c2 of the protruding portion 3c of the short side wall 3, preventing the push-out piece 4b from being damaged.

Next, another embodiment of the present invention will be described with reference to FIGS. 11-14 . Since the structure of the unlocking mechanism constituted by the push-out member arranged on the short side wall 3 and the operating member that moves the push-out member is substantially the same, the detailed description of the release mechanism other than the unlocking mechanism will be omitted. .

In the present embodiment, the unlocking mechanism arrangement region R2 where the unlocking mechanism is arranged is the same as the unlocking mechanism arrangement region R1 in the above-mentioned embodiment, as an upper horizontal portion 3b2 constituting the peripheral rib 3b and opposite side portions. 3b1 and the area surrounded by the horizontal rib 3d are formed. The upper horizontal part 3b2 and the horizontal rib 3d are connected by two center-side vertical ribs 6 located in the central region of the unlocking mechanism arrangement area R2 and side-side vertical ribs 7 located near the side part 3b1, and the center-side vertical ribs Slits 6a, 7a are formed on the side vertical ribs 6 and 7, respectively. In addition, guide protrusions 6 b extending in the horizontal direction are formed on opposite side surfaces of the pair of central portion side vertical ribs 6 . Also, as in the previous embodiment, a slit 3k is formed on the side portion 3b1 of the peripheral rib 3b constituting the short side wall 3 . The slit 3k formed in the side portion 3b1 has substantially the same shape as the slits 6a, 7a, and is provided on the same straight line in the lateral direction.

The unlocking mechanism is composed of a pair of pushing members 8 and one operating member 9 .

The push-out member 8 is composed of a square matching plate 8a and an elongated strip-shaped body 8b that is elastically deformable and is connected to the matching plate 8a at one end; The push-out part 8b1 extended from 8b and the inclined part 8b2 which connects one end of the push-out part 8b1 and the mating plate 8a are comprised. In addition, a notched concave portion 8a2 is formed at the vertical end 8a1 on the side where the push-out portion 8b1 of the strip-shaped body 8b extends.

The operating member 9 has a horizontally long rectangular plate portion 9a and a peripheral rib 9b formed around the plate portion 9a, and the centers of the upper horizontal portion 9b1 and the lower horizontal portion 9b2 constituting the peripheral rib 9b are connected by a central vertical rib 9c. In addition, an upper locking protrusion 9d extending downward is vertically provided at the front end of the portion sandwiching the central vertical rib 9c of the upper horizontal portion 9b1; A lower coupling protrusion 9e extending upward is provided. On the vertical side portion 9b3 constituting the peripheral rib 9b, the vertical side portion 9b3 is bulged inward to form guide protrusions protruding from the opposite side surfaces of the pair of central portion side vertical ribs 6 formed on the short side wall 3. The guide groove 9f into which the strip 6b can be inserted. Since the vertical side portion 9b3 bulges inward, a protruding portion 9g is formed inside the vertical side portion 9b3 to be inserted into the notch recess 8a2 formed in the vertical end 8a1 of the pushing member 8 .

Next, a method of attaching the pushing member 8 and the operating member 9 having the above-mentioned configuration to the short side wall 3 will be described.

First, the strip-shaped body 8b of the pushing member 8 is sequentially inserted through the slit 6a formed in the central vertical rib 6, the slit 7a formed in the side vertical rib 7, and the peripheral rib 3b formed in the short side wall 3. The slit 3k of the side portion 3b1, at the same time, inserts the mating plate 8a of the ejection member 8 into the unlocking mechanism surrounded by the opposite pair of central portion side vertical ribs 6 and the upper horizontal portion 3b2 and the horizontal rib 3d constituting the peripheral rib 3b. In the center area part R2' of the area R2, a pair of push-out members 8 are arrange|positioned in the unlocking mechanism arrangement area R2. Next, the fitting plates 8a of the pair of pushing members 8 are fitted into the pair of fitting recesses 9' surrounded by the peripheral rib 9b and the central vertical rib 9c of the operating member 9, respectively. When the fitting plate 8a of the pushing member 8 is fitted into the fitting recess 9' of the operating member 9, the upper end 8a3 of the fitting plate 8a is combined with the upper engaging protrusion 9d hanging down from the upper horizontal portion 9b1; in addition, the lower end 8a4 of the fitting plate 8a Locked on the lower locking protrusion 9e erected on the lower horizontal portion 9b2; at the same time, insert the protruding portion 9g formed on the vertical side portion 9b3 of the operating member 9 into the notch recess 8a2 formed on the matching plate 8a of the pushing member 8; The guide protrusions 6b protruding from the opposite sides of the central vertical rib 6 formed on the short side wall 3 are inserted into the guide groove 9f formed on the vertical side portion 9b3 of the operation member 9 . In this way, the pair of pushing members 8 and one operating member 9 constituting the unlocking mechanism can be arranged in the unlocking mechanism arrangement region R2 of the short side wall 3 .

The folding container, in the state assembled into a box shape, constitutes the front end of the push-out portion 8b1 of the belt-shaped body 8b of the push-out member 8 disposed in the unlocking mechanism arrangement region R2 of the short side wall 3, which is the same as the push-out portion of the above-mentioned embodiment. The push-out piece 4b (see FIG. 9 ) of the member 4 is also located close to the coupling protrusion 2d1 of the coupling elastic piece 2d formed on the long side wall 2 .

When folding and assembling a box-shaped folding container, as shown in FIG. The included angle θ with the inclined portion 8b2 becomes larger, so that the push-out portion 8b1 protrudes toward the direction of the long side wall 2 . Since the push-out portion 8b1 protrudes toward the direction of the long side wall 2, the front end of the push-out portion 8b1 disengages the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 from the protruding portion 3c of the short side wall 3. In the direction of opening, that is, the locking protrusion 2d1 is pushed outward, so that the locking elastic piece 2d of the long side wall 2 is bent against its elasticity. When the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the protruding portion 3c of the short side wall 3, the short side wall 3 is rotated toward the bottom 1, and a pair of opposing The short side walls 3 overlap on the bottom 1. Next, the pair of opposite long side walls 2 are superimposed on the pair of opposite short side walls 3 that have been superimposed on the bottom 1, so that the foldable container that has been assembled into a box shape can be folded.

After the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the protruding part 3c of the short side wall 3, when the plate of the operating member 9 to the short side wall 3 is released at an appropriate time, Pushing in the direction of the shape part 3a, the elastic force of the elastically deformable band-shaped body 8b that is elastically pressed to the angle θ formed by the push-out part 8b1 and the inclined part 8b2 becomes smaller, makes the operating member 9 move away from the plate of the short side wall 3. At the same time, the push-out portion 8b1 of the push-out member 8 is pulled in from the end vertical surface 3c2 of the protruding portion 3c of the short side wall 3 .

As described above, when folding a foldable container assembled into a box shape, only the operation member 9 disposed in the unlocking mechanism arrangement region R2 of the short side wall 3 is moved toward the plate-like portion 3 a of the short side wall 3 . One operation action of pushing in one direction can release the locking state of the locking elastic piece 2d of the long side wall 2 and the protruding portion 3c of the short side wall 3, thereby improving the stability of the long side wall 2 and the short side wall 3. The operability of the release operation of the locked state.

In addition, due to the elastic force of the band-shaped body 8b pressed to make the angle θ between the push-out portion 8b1 and the inclined portion 8b2 smaller, the vertical surface 3c2 at the end of the protruding portion 3c of the short side wall 3 can be pulled in and pushed in. The push-out portion 8b1 of the pressing member 8 can prevent the push-out portion 8b1 from being damaged.

Since the guide protrusion 6b protrudingly provided on the opposite side surface of the vertical rib 6 formed on the central portion side of the short side wall 3 is inserted into the guide groove 9f forming the vertical side portion 9b3 of the operation member 9, the operation member 9 moves toward the plate-shaped portion 3a of the short side wall 3 or moves the operating member 9 away from the plate-shaped portion 3a of the short side wall 3, the operating member 9 will not shake up and down, left and right. In addition, since the protruding portion 9g formed on the vertical side portion 9b3 of the operating member 9 is inserted into the notch recess 8a2 formed on the engaging plate 8a of the pushing member 8, looseness between the pushing member 8 and the operating member 9 can be prevented. Accordingly, the movement of the pair of push members 8 can be accurately performed without a difference in the amount of movement, and the movement of the pair of push members 8 by the operation member 9 can be performed quickly and surely.

Another embodiment of the present invention will be described below with reference to FIGS. 15-18 . Since there is substantially no change except for the configuration of the unlocking mechanism consisting of the push-out member disposed on the short side wall 3 and the operating member that moves the push-out member, detailed descriptions other than the lock mechanism are omitted. Furthermore, since the unlocking mechanism arrangement region R3 in which the unlocking mechanism is arranged is the same as the unlocking mechanism arrangement region R2 of the above-mentioned embodiment except that the guide protrusion 6b is not formed on the vertical rib 6 on the central portion side, it is the same. The constituent members of the unlock mechanism arrangement region R3 are given the same symbols as the constituent members of the unlock mechanism arrangement region R2 of the above-described embodiment.

The unlocking mechanism is composed of a pair of pushing members 10 and one operating member 11 .

The push-out member 10 is composed of a substantially angular column-shaped block portion 10a, an elongated plate-shaped push-out portion 10b at one end of which is mounted on one of the opposite side faces 10a1, 10a2 of the block portion 10a, and an elongated plate-shaped push-out portion 10b similarly mounted on the opposite side face 10a1. The elastic strip 10c inclined on the side 10a1 is composed of a rod 10d with a horizontal through hole 10d1 pierced at the front end of which is mounted on the other side 10a2 of the opposite side 10a1, 10a2 of the block 10a. Also, the rod 10d of one push-out member 10 is arranged below the side surface 10a2; and the rod 10d of the other push-out member 10 is arranged above the side surface 10a2.

The operating member 11 is composed of a disc-shaped body portion 11a, a convex handle portion 11b formed on one surface 11a1 of the body portion 11a and extending in the radial direction of the body portion 11a, and a cylinder protruding from the center of the other surface 11a2 of the body portion 11a. The tubular portion 11c is configured by a pair of pins 11d protruding at point-symmetrical positions on the surface 11a2 on which the cylindrical portion 11c protrudes across the center point of the main body portion 11a.

Attachment of the pushing member 10 and the operating member 11 having the above-mentioned configuration to the short side wall 3 will be described below.

First, the push-out portion 10b of the push-out member 10 is sequentially inserted through the slit 6a formed in the central vertical rib 6, the slit 7a formed in the side vertical rib 7, and the slit formed in the peripheral rib 3b constituting the short side wall 3. The slit 3k of the side portion 3b1, at the same time, disposes the block portion 10a of the ejection member 10 in the unlocking mechanism surrounded by the opposing pair of center portion side vertical ribs 6, the upper horizontal portion 3b2 constituting the peripheral rib 3b, and the horizontal rib 3d. It is arranged in the central region R2' of the region R2. As described above, since the rod 10d of one push member 10 is arranged below the side surface 10a2 of the block portion 10a, and the rod 10d of the other push member 10 is arranged above the side surface 10a2 of the block portion 10a, it is arranged in the unlocking mechanism. As shown in FIG. 15, the rod 10d of a pair of push-out member 10 in the central region part R2' of the arrangement|positioning region R2 exists in the position which opposes substantially parallel to each other. Next, the operating member 11 is arranged such that a pair of pins 11d of the operating member 11 are inserted into the horizontal through holes 10d1 of the rods 10d of the pair of push-out members 10, and at the same time, the cylindrical portion 11c of the operating member 11 is inserted into a pair of Push out between the rods 10d of the member 10 . Then, the cylindrical portion 13a of the rivet 13 is inserted into the through hole 12 of the plate-shaped portion 3a of the short side wall 3 in the central region R2' of the unlocking mechanism arrangement region R2, and at the same time, by making the rivet 13 The cylindrical portion 13 a is fitted into the cylindrical portion 11 c of the operation member 11 , and the operation member 11 is disposed on the short side wall 3 .

In the state where the foldable container is assembled into a box shape, the front end of the elastic strip 10c of the push-out member 10 arranged in the release mechanism arrangement area R2 of the short side wall 3, as shown in FIG. The central part of the side wall 3 has vertical ribs 6 . On the other hand, the convex handle portion 11b of the operating member 11 is inclined as shown in FIG. 17 . In this state, the front end of the push-out body 10b of the push-out member 10 disposed in the unlocking mechanism arrangement region R3 of the short side wall 3 is the same as the push-out piece 4b (see FIG. 9 ) of the push-out member 4 of the above-mentioned embodiment. The coupling protrusion 2 d 1 is positioned close to the coupling elastic piece 2 d formed on the long side wall 2 .

When folding and assembling a box-shaped foldable container, when the operating member 11 is rotated clockwise (as shown in FIG. 17 ) centered on the rivet 13, a pair of ejecting members 10 will move in a direction to separate from each other, thereby pushing out The front end of the push-out portion 10b of the member 10 is such that the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the protruding portion 3c of the short side wall 3, that is, the coupling protrusion 2d1 is pushed to the outside. Direction, so that the locking elastic piece 2d of the long side wall 2 overcomes its elastic bending. When the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is separated from the protruding part 3c of the short side wall 3, the short side wall 3 is rotated toward the bottom 1, and a pair of opposite short sides The wall 3 overlaps the bottom 1 . Next, the pair of opposite long side walls 2 are superimposed on the pair of opposite short side walls 3 that have been superimposed on the bottom 1, so that the foldable container assembled into a box shape can be folded. Furthermore, when the operating member 11 is rotated clockwise in FIG. As shown in FIG. 18 , the vertical rib 6 rises along the central portion side of the short side wall 3 and biases the pushing members 10 toward each other.

After the locking protrusion 2d1 of the locking elastic piece 2d formed on the long side wall 2 is separated from the protruding portion 3c of the short side wall 3, if the hand is released from the operation member 11 at an appropriate time, the elasticity of the push-out member 10 will be released. The urging force of the strip 10c moves the ejecting members 10 toward each other, so that the ejecting body 10b of the ejecting member 10 is introduced from the end vertical surface 3c2 of the protruding portion 3c of the short side wall 3 .

As described above, when folding and assembling a box-shaped foldable container, the long side wall 2 can be unlocked by rotating the operation member 11 provided in the unlocking mechanism arrangement area R2 of the short side wall 3 only once. The locked state of the combined elastic piece 2d and the protruding portion 3c of the short side wall 3 can improve the operability of the operation of releasing the locked state of the long side wall 2 and the short side wall 3 .

In addition, the push-out body 10b of the push-out member 10 can be pulled in from the end vertical surface 3c2 of the protruding portion 3c of the short side wall 3 only by letting go of the operating member 11 by the elastic force of the elastic strip 10c of the push-out member 10. Therefore, damage to the elastic strip 10c can be prevented.

As described above, the configuration in which the pair of push-out members 10 are actuated by rotating the operation member 11 is exemplified here, but it is also possible to hook fingers on the block portions of the pair of push-out members 10 without rotating the operation member 11. 10a, the push-out member 10 is operated to actuate the pair of push-out members 10 . In this case, it is preferable to form protrusions, ridges, or recesses on the block portion 10a of the ejection member 10, or to attach anti-slip materials such as rubber, in order to prevent fingers from slipping.

In addition, by changing the color or color tone of the operation members 5, 9, 11 to change the color or color tone of the short side walls 3 on which the operation members 5, 9, 11 are arranged, the visual visibility of the operation members 5, 9, 11 can be improved. Therefore, it is possible to improve the operability of the work of releasing the locked state of the long side wall 2 and the short side wall 3 .

Since the present invention has the configuration described above, the following effects can be produced.

Since the release mechanism is constituted by a push-out member having a push-out portion that bends the locking elastic piece formed on the opposite side wall, and an operating member that can move the push-out portion of the push-out member with one operation, The operability of the work of unlocking the locking mechanism of the adjacent side wall can be improved.

Claims (4)

1. A collapsible container having a bottom, an opposite side wall connected to the bottom by a hinge member, and an opposite side wall connected to the bottom by a hinge member similarly, starting from a state assembled into a box shape, Firstly, the above-mentioned opposite side wall is made to fall toward the bottom direction, and then the above-mentioned opposite side wall is made to fall toward the bottom direction, so that the folding can be performed. The unlocking mechanism of the locked state with the other side wall is arranged on the one side wall; A pair of push-out members on the upper part, and an operation member arranged between the pair of push-out members, and the pair of push-out members are respectively provided with buttons for biasing the pair of push-out members toward the direction of the operation member. Elastic strip. 2 . The foldable container according to claim 1 , wherein the push-out portion of the push-out member is moved by moving the operation member up and down. 3 . 3. The foldable container according to claim 1, wherein the push-out portion of the push-out member is moved by moving the operation member toward the side wall. 4. The foldable container according to claim 1, wherein the push-out portion of the push-out member is moved by turning the operation member.

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