JP2005343548A - Foldable container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable container solving the problem, i.e., low work performance in assembling the foldable container because an operation member and a pressing member each made as members different from each other require much labor and time for fixing on a short side wall. <P>SOLUTION: In the foldable container, operating levers 5d, 5e of a lock member 5 secured to a short side wall 3 and brought down earlier are positioned in contact with or in the vicinity of an upper face 4a1 of an engagement protrusion 4a protruding on an elastic piece 4 formed on a long side wall 2 brought down later in the state of being assembled in a box shape, and then the lock member is moved downward to elastically deform the elastic piece formed on the long side wall so that the locked state of the engagement protrusion of the elastomeric piece formed on the long side wall and the short side wall brought down earlier is unlocked. A complex mechanism to convert the vertical movement of the lock member into a horizontal movement of the operating member as a member different from the lock member is not necessary, as in the case of a conventional foldable container, and the construction of the lock member is simplified and damage of the lock member can be prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a folding container that can be folded so that a side wall disposed so as to surround the bottom portion overlaps the bottom portion.

Conventionally, the bottom is formed of a bottom formed in a substantially rectangular shape, a long side wall hinged to the long side opposite to the bottom, and a short side wall hinged to the short side opposite to the bottom. The container is assembled in a box shape by standing the long side wall and the short side part substantially perpendicular to the bottom, and when folded, the folding container is configured to fold the long side wall and the short side wall so as to overlap the bottom part. In a state assembled in a box shape, the long side wall or the short side wall is configured to be locked by a lock mechanism so as not to fall down toward the bottom.

As an example, Patent Document 1 discloses a folding container in which an elastic piece having an engaging protrusion is formed on a long side wall, and a pressing member capable of elastically deforming the elastic piece on the outside is provided on a short side wall. ing.
JP 2004-51199 A

In the conventional folding container, the operating member disposed on the short side wall is moved up and down, and the vertical movement of the operating member is converted into the horizontal movement of the pressing member which is a separate member from the operating member. Thus, the elastic piece having the engaging protrusion formed on the long side wall is elastically deformed outward, and the locked state of the short side wall by the engaging protrusion of the elastic piece formed on the long side wall is released. . Thus, in order to convert the vertical movement of the operating member into the horizontal movement of the pressing member, which is a separate member from the operating member, the engaging portion between the operating member and the pressing member becomes a complicated mechanism, and accordingly, the operating member and the pressing member are pressed. There was a problem that the engaging portion with the member was easily damaged.

Further, in the conventional folding container, since the operation member and the pressing member are separate members, it takes time and effort to attach to the short side wall, and therefore, there is a problem that the workability of the assembly operation of the folding container is poor. there were.

An object of the present invention is to solve the problems of the above-described conventional folding container.

In order to achieve the above-described object, according to the present invention, firstly, in the state assembled in a box shape, the operating rod of the lock member attached to one of the opposite side walls to be tilted first is tilted later. The lock member is moved downward from the state of being in contact with or approaching the upper surface of the engaging protrusion protruding from the elastic piece formed on the other opposite side wall. By elastically deforming the elastic piece formed on the other side wall to the outside, the engaging protrusion of the elastic piece formed on the other side wall that is tilted later and the opposite one that is tilted first. And secondly, the upper surface of the engaging protrusion is an inclined surface inclined downward, and thirdly, the lock is locked. Abuts on the upper surface of the engaging protrusion of the operating rod of the member or Are those at the corners to close, to form a rounded.

The operating rod of the locking member attached to one of the opposite side walls that is tilted first hits the upper surface of the engaging projection that is projected from the elastic piece formed on the other side wall that is tilted later. From the state of contact or approach, the lock member is moved downward, and the elastic piece formed on the other side wall that is tilted later is elastically deformed outward, so that Since it is configured to release the locked state between the engaging projection of the elastic piece formed on one side wall and the opposite side wall that is tilted first, the upper and lower sides of the lock member are moved like a conventional folding container. There is no need to provide a complicated mechanism for converting the movement into a horizontal movement of the operation member which is a separate member from the lock member. It can be.

In addition, unlike the conventional folding container, it is not necessary to convert the vertical movement of the lock member into the horizontal movement of the operation member which is a separate member from the lock member. Since the elastic piece formed on the other side wall can be elastically deformed outward, the unlocking of the opposite side wall that is tilted first and the other side wall that is tilted later is ensured. And can be performed quickly.

Furthermore, since the upper surface of the engaging protrusion is inclined downward, the operating member of the lock member that is in contact with the upper surface of the engaging protrusion is moved down smoothly and with a small force. Therefore, the operability of the lock member is improved.

Furthermore, since a rounded corner is formed at the corner that comes into contact with or approaches the upper surface of the engaging projection of the locking member, the lower movement of the operating member of the locking member that is in contact with the upper surface of the engaging projection Can be performed more smoothly and with a smaller force, so that the operability of the lock member is further improved.

Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

The overall configuration of the present invention includes a bottom 1, a long side wall 2 hinged to the opposing long side bank 1 a of the bottom 1, and a short side wall hinged to the opposing short side bank 1 b of the bottom 1. In this embodiment, the long side bank portion 1a is higher than the short side bank portion 1b.

From the state assembled in the box shape shown in FIG. 1, first, the short side wall 3 is brought down so as to overlap the bottom 1 as shown in FIG. 2, and then the long side wall 2 is As shown in FIG. 3, the folding container can be folded into a low height and compact by being tilted so as to overlap the short side wall 3 stacked on the bottom 1. From the state shown in FIG. 3, the long side wall 2 is set up substantially vertically, and then the short side wall 3 is set up substantially vertical, so that the folded container as shown in FIG. It is configured so that it can be assembled into a box shape.

Next, the long side wall 2 will be described with reference to FIGS.

The long side wall 2 has a substantially rectangular plate-like portion 2a. At both vertical ends of the long side wall 2, the inner surface of the plate-like portion 2a (the folding container as shown in FIG. When assembled into a mold, a vertically long engagement frame 2b extending in a substantially vertical direction to the surface 2a1 of the folding container assembled into a box shape is formed, and the engagement frame 2b A proper number of fitting holes 2b1 substantially parallel to the plate-like portion 2a are formed at predetermined intervals in the vertical direction. In this embodiment, an example in which three fitting holes 2b1 are formed is shown.

In the vicinity of both ends of the plate-like portion 2a located in the vicinity of the engagement frame 2b, a horizontal groove portion 2c1 formed at a predetermined interval in the vertical direction and an end portion on the engagement frame 2b side of the horizontal groove portion 2c1 are connected. A substantially U-shaped slit 2c composed of the vertical groove 2c2 is formed. By forming such a slit 2c in the plate-like portion 2a of the long side wall 2, the long side wall 2 has an engagement frame. An elastic piece 4 having a free end on the 2b side is formed. Further, a substantially prismatic engaging protrusion 4a is provided at the tip of the elastic piece 4, and the upper surface 4a1 of the engaging protrusion 4a extends from the root of the engaging protrusion 4a to the engaging protrusion 4a. The side surface 4a2 of the engaging protrusion 4a located on the base side of the elastic piece 4 is also formed on the side surface 4a2 of the engaging piece 4a from the base of the engaging protrusion 4a. An inclined surface that is inclined in the direction of the engagement frame 2b is formed toward the tip of the portion 4a. The inclined surface of the upper surface 4a1 of the engaging protrusion 4a is hereinafter simply referred to as the inclined upper surface 4a1, and the inclined surface of the side surface 4a2 of the engaging protrusion 4a is simply referred to as the inclined side surface 4a2.

Next, the short side wall 3 is demonstrated using FIG.1, FIG.2, FIG.5, FIG.6 and FIG.

The short side wall 3 has a substantially square plate-like portion 3a, and the upper and lower ends of the plate-like portion 3a are provided with outer surfaces of the plate-like portion 3a (as shown in FIG. When assembled into a mold, a top horizontal rib 3b and a bottom horizontal rib 3c extending in a direction substantially perpendicular to the surface 3a1 are formed, and the top horizontal rib 3b The both end portions of the lower end and the both end portions of the lower end horizontal rib 3c are connected by side ribs 3d.

The short side wall 3 is formed with a vertically extending portion 3e by extending the upper region of the plate-like portion 3a beyond the side rib 3d, and is formed at the edge of the protruding portion 3e. Is formed with a fitting protrusion 3f that can be fitted into a fitting hole 2b1 formed in the engagement frame 2b of the long side wall 2. In the present embodiment, an example is shown in which three fitting protrusions 3f are formed corresponding to the three fitting holes 2b1 formed in the engagement frame 2b of the long side wall 2. .

The plate-like portion 3a positioned below the upper end horizontal rib 3b is formed with partitioned horizontal ribs 3g that connect the opposite side ribs 3d at a predetermined interval from the upper end horizontal rib 3b. Further, a connecting rod 3h that connects the upper horizontal rib 3b and the partition horizontal rib 3g is formed in the vicinity of the opposing side rib 3d, and the rear surface of the connecting rod 3h (opposite the plate-like portion 3a of the connecting rod 3h). A predetermined slit S1 is formed between 3h1 and the plate-like portion 3a, and a predetermined gap is provided between the side surface 3h2 on the side rib 3d side of the connecting rod 3h and the side rib 3d. The gap W1 is formed. In this embodiment, as shown in FIG. 6, an example is shown in which the horizontal cross-sectional shape of the connecting rod 3h is formed in a substantially U shape.

A slit S2 is formed in the side rib 3d located near the upper portion of the partition horizontal rib 3g, and a notch recess 3e1 is formed in the overhanging portion 3e located around the slit S2. . The side rib 3d is provided with a vertical piece 3i that is perpendicular to the side rib 3d with the slit S2 interposed therebetween, and the tip of the vertical piece 3i is connected to the opposite vertical piece 3i. A stop piece 3j is formed, and the locking piece 3j is retracted by a predetermined distance from the tip of the side rib 3d.

First, the lock member 5 integrally formed of synthetic resin disposed on the short side wall 3 will be described mainly with reference to FIGS. 8 and 9.

The lock member 5 has a rectangular main body 5a whose front shape is horizontally long, and protrudes from the opposite side surface 5a1 of the main body 5a, and has thin portions 5b and 5c that are thinner than the thickness of the main body 5a. Yes. The back surfaces of the main body 5a and the thin portions 5b and 5c (the surface facing the outer surface 3a1 of the plate-like portion 3a of the short side wall 3 when the lock member 5 is attached to the short side wall 3) are substantially flush with each other. It is comprised so that it may become.

Further, an operating rod 5d is vertically connected to the side surface 5b1 at the lower portion of the side surface 5b1 of the thin portion 5b. Similarly, the operating rod 5e is also connected to the side surface 5c1 at the lower portion of the side surface 5c1 of the thin portion 5c. Connected vertically. One operating rod 5d is formed longer than the other operating rod 5e, and the thickness of the operating rods 5d, 5e are both the same as the thickness of the thin portion 5b. The back surface of the main body 5a, the back surfaces of the thin wall portions 5b and 5c, and the back surfaces of the operating rods 5d and 5e (when the lock member 5 is attached to the short side wall 3, it faces the outer surface 3a1 of the plate-like portion 3a of the short side wall 3 Surface) is configured to be substantially flush. Further, the corner formed by the tip surface 5d1 and the lower surface 5d2 of the longer operation rod 5d is formed as a corner portion 5d3 having a rounded shape, and similarly, the corner surface 5e1 of the shorter operation rod 5e A corner formed by the lower surface 5e2 is formed as a corner 5e3 having a rounded shape.

The lower surface 5a2 of the main body 5a, the lower surface 5b2 of one thin portion 5b, the lower surface 5c2 of the other thin portion 5c, the lower surface 5d2 of one operating rod 5d, and the lower surface 5e2 of the other operating rod 5e A lower surface 5 ′ is configured, and includes a lower surface 5a2 of the main body 5a, a lower surface 5b2 of one thin portion 5b, a lower surface 5c2 of the other thin portion 5c, a lower surface 5d1 of one operating rod 5d, and another operating rod 5e. The lower surface 5e1 of the lock member 5 is formed to be substantially flush, in other words, the lower surface 5 ′ of the lock member 5 is substantially flat.

The lower surface 5 ′ of the lock member 5 extends at a predetermined interval so as to be inclined toward each other. In other words, the lower surface 5 ′ is inclined toward the center of the lower surface 5 ′ of the lock member 5. One elastic plate member 5f is formed. Further, the front surface (the surface located outside when the lock member 5 is attached to the short side wall 3) 5c3 connected to the short operation rod 5e is connected to the side surface 5c1 of the thin portion 5c. A fitting protrusion 5g is provided along the protrusion. The side surface 5g1 on the main body 5a side of the fitting protrusion 5g is substantially perpendicular to the front surface 5c3 of the thin portion 5c, and the side surface 5g2 on the shorter operating rod 5e side of the fitting protrusion 5g is the thin portion 5c. It is formed as an inclined surface that approaches the side surface 5c1 toward the side surface 5c1. Further, the distance from the tip of the fitting protrusion 5g to the back surface 5c4 of the thin portion 5c is the width of the slit S1 formed between the back surface 3h1 of the connecting rod 3h and the outer surface 3a1 of the plate-like portion 3a of the short side wall 3. It is formed longer. Reference numeral 5h denotes a grip recess formed on the front surface 5a3 of the main body 5a of the lock member 5.

The total length L1 of the lock member 5 (distance from the tip of the longer operation rod 5d to the tip of the shorter operation rod 5e) L1 is substantially equal to the distance L2 between the tips of the pair of overhang portions 3e constituting the short side wall 3. It is the same or slightly shorter than that, and when the lock member 5 is attached to the short side wall 3, the tips of the operation rods 5 d and 5 e of the lock member 5 protrude from the short side wall 3. Is configured to not. The total height of the lock member 5 (distance from the upper surface 5a4 of the main body 5a to the tip of the elastic plate member 5f) H1 is a distance H2 from the lower surface 3b1 of the upper horizontal rib 3b of the short side wall 3 to the upper surface 3g1 of the partition horizontal rib 3g. It is formed approximately the same.

The thin portions 5b and 5c constituting the lock member 5 can be inserted into a slit S1 formed between the back surface 3h1 of the connecting rod 3h and the plate-like portion 3a of the short side wall 3, and the lock member 5 Are configured so that they can be inserted into the slits S2 formed in the side ribs 3d of the short side wall 3.

Next, the attachment of the lock member 5 to the short side wall 3 will be described mainly with reference to FIGS.

First, the longer operating rod 5d of the lock member 5 is inserted into the slit S1 formed between the back surface 3h1 of one connecting rod 3h formed on the short side wall 3 and the plate-like portion 3a of the short side wall 3; One connecting rod formed on the short side wall 3 is inserted into the slit S2 formed in one side rib 3d of the short side wall 3 and the thin part 5b connected to the longer operation rod 5d. The side surface 5a1 of the main body portion 5a of the lock member 5 connected to the slit S1 formed between the back surface 3h1 of 3h and the plate-like portion 3a of the short side wall 3 is the one connecting rod 3h. Insert until it touches or approaches. Next, the lock member 5 is turned in the direction of the plate-like portion 3 a of the short side wall 3, and the back surface of the lock member 5 is brought into contact with or brought close to the outer surface 3 a 1 of the plate-like portion 3 a constituting the short side wall 3. Thereafter, the lock member 5 is moved in the direction of the other side rib 3 d constituting the short side wall 3, and the shorter operation rod 5 e of the lock member 5 is moved to the other connecting rod formed on the short side wall 3. Inserted into the slit S1 formed between the rear surface 3h1 of 3h and the plate-like portion 3a of the short side wall 3 and the slit S2 formed in the other side rib 3d of the short side wall 3, and the shorter one The thin portion 5c connected to the operating rod 5e is inserted into a slit S1 formed between the back surface 3h1 of the other connecting rod 3h formed on the short side wall 3 and the plate-like portion 3a of the short side wall 3. Will do. A thin portion 5c to which the shorter operation rod 5e is connected is a slit formed between the back surface 3h1 of the other connecting rod 3h formed on the short side wall 3 and the plate-like portion 3a of the short side wall 3 When inserted into S1, as described above, the distance from the tip of the fitting protrusion 5g to the back surface 5c4 of the thin portion 5c is the outer surface of the plate-like portion 3a of the back surface 3h1 of the connecting rod 3h and the short side wall 3 Since it is formed longer than the width of the slit S1 formed between 3a1 and 3a1, the fitting protrusion 5g is formed between the back surface 3h1 of the other connecting rod 3h and the plate-like portion 3a of the short side wall 3. When the plate-like portion 3a of the short side wall 3 and the connecting rod 3h are forcibly inserted into the slit S1 formed therebetween, and the fitting protrusion 5g passes the other connecting rod 3h. The fitting protrusion 5g is connected to the other side of the connecting rod 3h. Parts is inserted into the gap W1 formed between the ribs 3d side surface 3h2 Tomo one side ribs 3d, moved in the horizontal direction of the lock member 5 is configured to be suppressed. In this way, the lock member 5 is attached to the short side wall 3.

As described above, when the lock member 5 is attached to the short side wall 3, the upper surface 5a4 of the main body 5a of the lock member 5 comes into contact with or approaches the lower surface 3b1 of the upper end horizontal rib 3b of the short side wall 3. And the tips of the pair of elastic plates 5f formed on the lower surface 5 ′ of the lock member 5 are positioned so as to contact or approach the upper surface of the upper surface 3g1 of the partition horizontal rib 3g, Further, in this state, the longer operating rod 5d and the shorter operating rod 5e of the lock member 5 are positioned above the slit S2 formed in the side rib 3d of the short side wall 3, respectively. It is configured.

As shown in FIG. 3, in order to assemble a folded container in a folded state as shown in FIG. 1, first, a long side wall 2 in a substantially horizontal state is first placed vertically. Rotate in the direction and stand almost vertically as shown in FIG. Next, when the short side wall 3 folded so as to overlap the bottom 1 is rotated in the vertical direction, the overhanging portion 3 e of the short side wall 3 faces the engagement frame 2 b formed on the long side wall 2. The tip of the fitting projection 3f protruding from the protruding portion 3e of the short side wall 3 is inserted into the fitting hole 2b1 formed in the engagement frame 2b of the long side wall 2 become. Before and after the process of inserting the fitting protrusion 3f into the fitting hole 2b1, the short side wall 3 is formed on the inclined side surface 4a2 of the engaging protrusion 4a protruding from the elastic piece 4 formed on the long side wall 2. When the locking piece 3j formed on the side rib 3d of this side comes into contact, and the short side wall 3 is further rotated in the vertical direction, the engagement formed on the side rib 3d of the short side wall 3 is increased. When the stop piece 3j elastically deforms the elastic piece 4 formed on the long side wall 2 to the outside and the locking piece 3j exceeds the engaging protrusion 4a protruding from the elastic piece 4, the elastic piece 4 is restored to its original position by the restoring force, and the engaging protrusion 4 protruding from the elastic piece 4 comes into contact with the surface 3j1 located on the notch recess 3e1 side of the locking piece 3j. Or it will be located close. Further, when the engaging protrusion 4 protruding from the elastic piece 4 is in contact with or close to the surface 3j1 located on the notch recess 3e1 side of the locking piece 3j as described above, As shown in FIG. 13, the operating rods 5 d and 5 e of the lock member 5 are positioned so as to contact or approach the inclined upper surface 4 a 1 of the engaging protrusion 4 protruding from the elastic piece 4. It is configured.

As described above, when the folding container is assembled in a box shape, the engaging protrusions 4 a protruding from the elastic piece 4 formed on the long side wall 2 are formed on the side ribs 3 d of the short side wall 3. Is located in contact with or close to the surface 3j1 located on the side of the notch recess 3e1 of the locking piece 3j formed on the short side wall 3 even if the short side wall 3 tends to fall in the bottom 1 direction. The locking piece 3j formed on the side wall abuts on the engaging protrusion 4a of the elastic piece 4 formed on the long side wall 2, and the rotation of the short side wall 3 in the direction of the bottom 1 is prevented. The side wall 3 can be prevented from falling in the direction of the bottom 1.

As shown in FIG. 1, in order to fold a folding container assembled in a box shape as shown in FIG. 3, a concave portion for a handle of a lock member 5 disposed on a short side wall 3. When the lock member 5 is moved down against the elastic force of the elastic plate 5f while the elastic plate 5f is deformed by putting a hand in 5h, a long side wall 2 is formed as shown in FIG. The operating rods 5d and 5e of the lock member 5 that are in contact with or approaching the inclined upper surface 4a1 of the engaging protrusion 4 protruding from the elastic piece 4 are engaged along the inclined upper surface 4a1. 4, the elastic plate member 5f is elastically deformed outward. And as FIG. 14 shows, the front end surfaces 5d1 and 5e1 of the operation rods 5d and 5e of the lock member 5 are on the front end surface 4a3 of the engagement protrusion 4a of the elastic piece 4 formed on the long side wall 2. Since the engaging protrusion 4a of the elastic piece 4 is configured to be disengaged from the locking piece 3j formed on the side rib 3d of the short side wall 3 at the time of contact, in this way, the long side wall When the engaging protrusion 4a of the elastic piece 4 formed in 2 is disengaged from the locking piece 3j formed on the side rib 3d of the short side wall 3, the short side wall 3 is tilted in the direction of the bottom 1 , The opposing short side walls 3 are overlapped with the bottom 1. Thereafter, the long side wall 2 is tilted in the direction of the bottom part 1 and the opposing long side wall 2 is overlaid on the short side wall 3 superimposed on the bottom part 1, as shown in FIG. The folded container assembled in can be folded as shown in FIG.

As described above, the integrally formed lock member 5 disposed on the short side wall 3 is moved downward, and the elastic piece 4 formed on the long side wall 2 is moved by the operating rods 5d and 5e of the lock member 5. Since it is configured to release the locked state between the engaging protrusion 4a of the elastic piece 4 formed on the long side wall 2 and the locking piece 3j formed on the short side wall 3 by elastically deforming outward. Since there is no complicated mechanism for converting the vertical movement of the lock member into the horizontal movement of the lock member and the separate operation member, unlike the conventional folding container, the configuration of the lock member 5 is simplified. In addition, damage to the lock member 5 can be prevented.

Further, since the upper surface 4a1 of the engaging protrusion 4 protruding from the elastic piece 4 is formed as an inclined surface inclined downward toward the tip of the engaging protrusion 4, it is formed as an inclined surface. The operating members 5d and 5e of the lock member 5 abutting on the upper surface (inclined upper surface) 4a1 of the engaging protrusion 4 can be moved smoothly and with a small force. Improved operability. In order to smoothly move the operating rods 5d and 5e of the lock member 5 downward, the inclined upper surface 4a1 is inclined so that the angle formed by the inclined upper surface 4a1 and the horizontal surface is 45 degrees or less. preferable.

In addition, the corners of the operating rods 5d and 5e of the lock member 5 that are in contact with the inclined upper surface 4a1 of the engaging projection 4 projecting from the elastic piece 4 are formed as corners 5d3 and 5e3 having rounded corners. Therefore, the downward movement of the operating rods 5d and 5e of the lock member 5 that is in contact with the inclined upper surface 4a1 of the engagement protrusion 4 can be performed more smoothly and with a smaller force. The operability is further improved.

As described above, in the state assembled in the box shape, the operating pieces 5d and 5e of the lock member 5 attached to the short side wall 3 that is tilted first are elastic pieces 4 formed on the long side wall 2 that is tilted later. The lock member 5 is moved downward from the state where it is in contact with or close to the inclined upper surface 4a1 of the engaging protrusion 4 projecting from the elastic member 4, and the elastic piece 4 formed on the long side wall 2 is elastically outward. Since it is configured to release the locked state between the engaging protrusion 4a of the elastic piece 4 formed on the long side wall 2 and the locking piece 3j formed on the short side wall 3 by deforming, Unlike the folding container, it is not necessary to provide a complicated mechanism for converting the vertical movement of the lock member into the horizontal movement of the operation member which is a separate member from the lock member, and thus the configuration of the lock member 5 is simplified. In addition, damage to the lock member 5 It is possible to prevent.

Further, unlike the conventional folding container, it is not necessary to convert the vertical movement of the lock member into the horizontal movement of the operation member, which is a separate member from the lock member. Since the formed elastic piece 4 can be elastically deformed to the outside, the unlocking of the long side wall 2 and the short side wall 3 can be performed reliably and quickly.

FIG. 1 is a perspective view of the folding container of the present invention assembled in a box shape. FIG. 2 is a perspective view during folding or assembling of the folding container of the present invention. FIG. 3 is a perspective view of a state in which the folding container of the present invention is folded. FIG. 4 is a partially enlarged perspective view of the long side wall of the folding container of the present invention. FIG. 5 is a partial perspective view of the short side wall of the folding container of the present invention as seen from the outside. FIG. 6 is a partial perspective view including a horizontal section when the short side wall of the folding container of the present invention is viewed from the outside. FIG. 7 is a partial perspective view of the short side wall of the folding container of the present invention as seen from the inside. FIG. 8 is a perspective view of a lock member constituting the folding container of the present invention. FIG. 9 is a perspective view from the back of the lock member constituting the folding container of the present invention. FIG. 10 is an exploded perspective view of the short side wall and the lock member of the folding container of the present invention for explaining attachment of the lock member to the short side wall. FIG. 11 is a partial perspective view including a horizontal cross section of the short side wall of the folding container of the present invention similar to that of FIG. FIG. 12 is a partial perspective view of the short side wall of the folding container of the present invention with the lock member attached. FIG. 13 is a partially enlarged perspective view of the long side wall and the short side wall in a locked state constituting the folding container of the present invention. FIG. 14 is a partially enlarged perspective view of a long side wall and a short side wall constituting the folding container of the present invention similar to FIG.

Explanation of symbols

1 ... Bottom 2 ... Long Side Wall 2b ... ..... engaging frame 2b1 ..... fitting hole 3 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short side wall 3e ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Projection 3f ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ Fitting protrusion 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Elastic piece 4a ... Engagement projection 5 ......... Lock members 5d, 5e ... Operation杆

Claims (3)

In the state assembled in the box shape, the operating rod of the lock member attached to the opposite side wall that is tilted first is projected on the elastic piece formed on the other side wall that is tilted later. From the state where the upper surface of the engaging projection is in contact with or approaching, the lock member is moved downward to elastically deform the elastic piece formed on the other opposite side wall that is tilted later. By doing so, it is configured to release the locked state between the engaging protrusion of the elastic piece formed on the other opposite side wall that is tilted later and the one side wall that is tilted first. Folding container characterized by. The folding container according to claim 1, wherein an inclined surface inclined downward is formed on an upper surface of the engaging protrusion. 3. The folding container according to claim 1, wherein a rounded portion is formed at a corner portion that comes into contact with or approaches the upper surface of the engaging protrusion of the operating rod of the lock member.

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