JP4287334B2 - Folding container - Google Patents

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, a long side wall connected via a hinge member to the opposite long side portion of the bottom portion, which has a substantially rectangular planar shape, and a corresponding short side portion of the bottom portion are connected via a hinge member. It is assembled into a box shape by standing up the long side wall and the short side part substantially perpendicular to the bottom part, and when folded, the long side wall and the short side part are overlapped on the bottom part. Folding containers with folding side walls are known, and when assembled in a box shape, long side walls or short side walls are configured to be locked together by a locking mechanism so that they do not fall down toward the bottom. Has been.

As an example, the engaging protrusion and the long side wall are rotated by bringing the engaging protrusion into contact with the convex portion protruding from the short side wall by lowering the operating portion disposed on the short side wall. Patent Document 1 discloses a folding container that is released from a locked state with an engaging recess formed in the above.
JP 2003-40263 A

In the conventional folding container, the locking of the short side wall and the long side wall is performed by engaging the engaging protrusion provided on the short side wall with the engaging recess provided on the long side wall. However, when an impact due to dropping or the like is applied to the folding container, there is a problem that the engagement protrusion moves and the locked state is easily released.

Further, the rotation of the short side wall in the direction of the bottom is performed by engaging the engaging protrusion, which is weak in strength, with the engaging recess, and thus the engaging protrusion is damaged.

Further, when the engaging protrusion is disposed on the short side wall of the large folding container or disposed on the long side wall having a longer width than the short side wall, the engaging protrusion is deformed, and the long side wall and the short side wall are deformed. There is a problem that the locked state cannot be released or the engaging protrusion is damaged.

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, the present invention includes a side wall that is first set up in a vertical direction from a folded state, and a side wall that is set up in the vertical direction after the opposite side wall. In the folding container having the above, on the opposite side walls standing in the vertical direction from the rear , there is one operating portion that moves up and down, and a pair of lever cages that can rotate around the lever fulcrum by the vertical movement of the operating portion And a locking piece that is substantially perpendicular to the side rib is formed on the side rib of the opposite side wall that stands in the vertical direction from the rear. The opposing side wall that is initially set up in the vertical direction is formed with an elastic tongue piece with an engaging protrusion having an inclined lower surface and an inclined side surface at the tip thereof, and the folding container is box-shaped. assembly In this state, the engaging pieces formed on the side ribs of the opposite side walls standing in the vertical direction from the rear are engaged with the elastic tongue pieces formed on the opposite side walls standing in the vertical direction first. By being configured so as to be positioned between the mating protrusion and the engagement frame that is substantially perpendicular to the plate-like portion, the opposite side wall that is initially set up in the vertical direction and the side wall that is set up in the vertical direction from the rear In a state where the folding container is assembled in a box shape, it constitutes an unlocking member disposed on the opposite side wall that stands in the vertical direction after the folding container. The push-up protrusion of the lever rod is configured to be in contact with or close to the inclined lower surface of the engagement protrusion protruding from the elastic tongue formed on the opposite side wall that is initially set in the vertical direction. Have been The push-up protrusions of the lever rods constituting the unlocking members disposed on the opposite side walls standing in the vertical direction from the rear are engaged with the elastic tongue pieces formed on the opposite side walls that are first set up in the vertical direction. The elastic tongue piece is elastically deformed outward by moving upward along the inclined lower surface of the mating portion, and the opposite side wall that is initially set in the vertical direction and the opposite side wall that is set in the vertical direction from the rear The lock state is released .

In a folded container having a side wall standing vertically in the folded state and a side wall standing next in vertical direction after the opposite side wall, the container is stood in the vertical direction from the rear side. The unlocking member disposed on the opposite side wall is composed of an operating part that moves up and down and an insulator that can be rotated around the lever fulcrum by the up and down movement of the operating part. The bending deformation can be reduced, and therefore, it is possible to reliably perform the unlocking operation of the opposite side wall that is first set up in the vertical direction and the side wall that is set up in the vertical direction next to the opposite side wall. In addition, damage to the unlocking member can be prevented.

The locking piece formed on the side wall standing vertically from the rear is positioned in contact with or approaching the engaging protrusion of the elastic tongue piece formed on the side wall standing first in the vertical direction. The locking piece and the engaging projection of the elastic tongue piece are in a locked state, and the unlocking member itself is used to lock the side wall that is set up in the vertical direction from the rear and the side wall that is set up in the vertical direction first. Is not involved, so that damage to the unlocking member can be prevented, and even if the unlocking member moves slightly, the side wall that stands upright from the rear and the side wall that stands upright first Can be prevented from being unlocked.

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.

As shown in FIGS. 1 to 3, the overall configuration of the present invention is such that the bottom portion 1, the long side wall 2 hinged to the long side bank portion 1 a opposed to the bottom portion 1, and the bottom portion 1 face each other. It is comprised from the short side wall 3 hingedly connected to the short side bank part 1b, and in the present Example, the height of the long side bank part 1a is comprised higher than the height of the short side bank part 1b. ing.

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, as shown in FIG. 2, the long side wall 2 is set up substantially vertically, and then the short side wall 3 is set up substantially vertically as shown in FIG. 1. As described above, the folded container is configured so that it can be assembled into a box shape.

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

The long side wall 2 has a horizontally long and substantially rectangular plate-like portion 2a. At both vertical ends of the long side wall 2, the long side wall 2 is substantially perpendicular to the plate-like portion 2a and the inner surface of the long side wall 2 (folding container). As shown in FIG. 1, when assembled into a box shape, a vertically long engagement frame 2b extending in a direction protruding from 2a1 is a surface located inside the folding container assembled into a box shape. In the engagement frame 2b, an appropriate 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 tongue 4 having a free end is formed on the 2b side. Further, a substantially prismatic engaging protrusion 4a is provided at the tip of the elastic tongue piece 4, and the lower surface 4a1 of the engaging protrusion 4a extends from the root of the engaging protrusion 4a to the engaging protrusion. It is formed as an inclined surface that is inclined upward toward the tip of 4a, and the side surface 4a2 of the engaging protrusion 4a located on the base side of the elastic tongue piece 4 is also engaged from the base of the engaging protrusion 4a. An inclined surface inclined in the direction of the engagement frame 2b is formed toward the tip of the mating protrusion 4a. The inclined surface of the lower surface 4a1 of the engaging protrusion 4a is hereinafter simply referred to as an inclined lower surface 4a1, and the inclined surface of the side surface 4a2 of the engaging protrusion 4a is simply referred to as an inclined side surface 4a2.

Next, the short side wall 3 will be described mainly with reference to FIGS. 1 to 3, 5, and 6.

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 or the whole of the plate-like portion 3a beyond the side ribs 3d, thereby forming a vertically extending portion 3e. 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 is provided. 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. .

A side (hereinafter referred to as an outer surface) 3d1 of the side rib 3d on the side of the overhanging portion 3e, and in the vicinity of the tip 3d2 of the side rib 3d, along the tip 3d2 and on the side. A plate-like locking piece 3g substantially perpendicular to the part rib 3d is formed, and if necessary, a corner formed by the locking piece 3g and the outer surface 3d1 of the side rib 3d is substantially omitted. A horizontal reinforcing horizontal piece 3d3 is formed. In the present embodiment, there is an example in which the locking piece 3g is formed near the lower part of the uppermost fitting protrusion 3f among the fitting protrusions 3f protruding from the overhanging part 3e. It is shown. In addition, a vertically long slit 3h is formed in the side rib 3d where the locking piece 3g is located.

An upper horizontal rib 3i extending in a direction substantially perpendicular to the outer surface 3a1 of the plate-like portion 3a is formed on the plate-like portion 3a located below the upper-end horizontal rib 3b and substantially parallel to the upper-end horizontal rib 3b. The upper horizontal rib 3b and the upper horizontal rib 3i are connected to each other by a pair of opposed partition vertical ribs 3j at a predetermined interval, and a vertically long slit 3k is formed in the partition vertical rib 3j. Has been. Further, a vertical rib 3m that connects the upper horizontal rib 3b and the upper horizontal rib 3i is formed between the partition vertical rib 3j and the side rib 3d. The vertical rib 3m has a fulcrum through-hole 3m1. It has been drilled.

A pair of hanging ribs 3n hanging from the upper horizontal rib 3b is formed in the plate-like portion 3a located in the region surrounded by the upper horizontal rib 3b, the upper horizontal rib 3i, and the pair of opposed partition vertical ribs 3j. In the lower part of the hanging rib 3n, a horizontal elastic strip support protrusion 3n1 extending in the direction of the partition vertical rib 3j is extended. In addition, a substantially vertical guide rib 3p that connects the upper horizontal rib 3b and the upper horizontal rib 3i is formed on the plate-like portion 3a located between the pair of hanging ribs 3n. The height of the guide rib 3p from the plate-like portion 3a is lower than the height of the upper horizontal rib 3b, the upper horizontal rib 3i, the side rib 3d, the partition vertical rib 3j, and the vertical rib 3m from the plate-like portion 3a. Has been.

Next, with reference to FIGS. 7 and 8, the unlocking member 5 constituted by one operating portion 5 ′ and two lever rods 5 ″ will be described.

The operation portion 5 ′ includes a horizontally long front plate 5a and side plates 5b extending from both ends of the front plate 5a substantially perpendicular to the front plate 5a and extending rearward. Is formed with a notch recess 5b1. Further, the front plate 5a is formed by a box-type front side, which is made up of a side plate 5c3 and a back plate 5c4 facing the top plate 5c1 and the bottom plate 5c2, by bulging the central region of the front plate 5a rearward. The concave portion 5c for the handle is formed.

An elastic strip mounting rib 5d that is substantially parallel to the side plate 5b protrudes from the upper end portion of the front plate 5a located in the vicinity of the opposing side plate 5b, and is positioned on the grip recess 5c side of the elastic strip mounting rib 5d. An elastic strip 5d1 extending downward or substantially horizontally to the vicinity of the handle recess 5c is formed at the upper portion of the surface to be formed. Further, the vertically long guide recess 5c5 is formed by causing the vicinity of both ends of the back plate 5c4 of the handle recess 5c to bulge in the direction of the front plate 5a. Furthermore, a cylindrical bearing 5e substantially perpendicular to the front plate 5a is formed on the back surface of the front plate 5a located near the side plate 5b.

5 ″ is a rod-shaped lever cage. When the rear surface (the insulator rod 5 ″ is disposed on the short side wall 3 together with the operation portion 5 ′), the short side wall 3 A pivot pin 5f protrudes from the surface of the plate-like portion 3a, and an end vertical portion 5g perpendicular to the longitudinal direction of the insulator rod 5 "located at the other end. A push-up protrusion 5h that is perpendicular to the end vertical part 5g is provided.

The lateral width W1 of the operation portion 5 ′ is formed to be substantially the same as the distance D1 between the pair of opposed partition vertical ribs 3j formed on the short side wall 3, and the height H1 of the operation portion 5 ′ is equal to the short side wall. 3 is formed lower than the distance D2 between the upper horizontal rib 3b and the upper horizontal rib 3i.

Next, the attachment of the unlocking member 5 to the short side wall 3 will be described mainly with reference to FIGS. 9 to 12.

One lever rod 5 ″ is inserted from the side from which the pivot pin 5f protrudes into a vertically long slit 3h formed in one side rib 3d of the pair of side ribs 3d, The vertical rib 3m is inserted into a fulcrum through-hole 3m1 drilled in one vertical rib 3m, and then inserted into a longitudinal slit 3k drilled in one partition vertical rib 3j of the pair of partition vertical ribs 3j. Similarly, the other elongated lever 5 ″ is inserted into the other side rib 3d of the pair of side ribs 3d from the side from which the pivot pin 5f protrudes. 3h, and then inserted into the fulcrum through-hole 3m1 formed in the other vertical rib 3m of the pair of vertical ribs 3m, and then into the other compartment vertical rib 3j of the pair of compartment vertical ribs 3j. It is inserted into the vertically elongated slit 3k.

Then, the back plate 5 c 4 forming the handle recess 5 c of the operation portion 5 ′ is opposed to the plate-like portion 3 a of the short side wall 3, and the handle recess 5 c of the operation portion 5 ′ is The operation portion 5 ′ is formed by a partition vertical rib 3j facing the upper horizontal rib 3b and the upper horizontal rib 3i of the short side wall 3 so as to be positioned between a pair of the hanging ribs 3n suspended from the upper horizontal rib 3b. Placed in the space. Further, when the operation portion 5 ′ is arranged on the short side wall 3 in this way, the tip of the elastic strip 5d1 formed on the operation portion 5 ′ is connected to the hanging rib 3n suspended from the upper end horizontal rib 3b. It is mounted on the elastic strip support protrusion 3n1, and the lever cage 5 "is fitted into a notch recess 5b1 formed in the side plate 5b, and protrudes in the vicinity of one end of the insulator rod 5". The pivot pin 5f thus formed is inserted into a cylindrical bearing 5e formed on the back surface of the front plate 5a of the operation portion 5 ′. Further, when arranged on the short side wall 3 in this way, the guide rib 3p formed on the plate-like portion 3a of the short side wall 3 is inserted into the vertically long guide concave portion 5c5 formed on the operation portion 5 ′. It is configured.

As described above, the short side wall 3 is provided with the unlocking member 5 composed of one operation portion 5 ′ and two insulators 5 ″. When the release member 5 is disposed, the pushing-up protrusion 5h of the lever cage 5 ″ is, as shown in FIG. 10, the back surface (folding container) of the locking piece 3g formed on the side rib 3d. And the tip of the push-up projection 5h of the insulator 5 "is short beyond the overhanging portion 3e. It is comprised so that it may not protrude outside the side wall 3.

Further, when the unlocking member 5 is disposed on the short side wall 3, the push-up protrusion 5h of the lever rod 5 "inserted into the vertically long slit 3h formed in the side rib 3d of the short side wall 3 is provided. Alternatively, the distal end portion of the insulator rod 5 ″ is configured to be freely movable in the vertical direction within the slit 3h, and the insulator rod 5 ″ inserted into the vertically long slit 3k of the partition vertical rib 3j is also the slit 3k. The insulator rod 5 ″ inserted into the fulcrum through-hole 3m1 formed in the vertical rib 3m of the short side wall 3 is movable in the vertical direction. The fulcrum through-hole 3m1 is configured to function as an insulator fulcrum of the insulator rod 5 ″.

Further, when the unlocking member 5 is disposed on the short side wall 3, as shown in FIG. 10, the operation portion 5 ′ contacts or approaches the upper end horizontal rib 3 b of the short side wall 3. The operation portion 5 ′ is disposed between the operation portion 5 ′ and the upper horizontal rib 3i of the short side wall 3 of the elastic strip 5d1 disposed on the operation portion 5 ′. A gap that can move down against the elastic force is formed.

Furthermore, in the state in which the folding container is assembled in a box shape, as shown in FIG. 13, a push-up projection 5 h of the lever cage 5 ″ constituting the lock release member 5 is formed on the long side wall 2. The elastic tongue piece 4 is configured to be in contact with or close to the inclined lower surface 4a1 of the engaging protrusion 4a.

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, a short side wall is formed on the inclined side surface 4a2 of the engaging protrusion 4a projecting from the elastic tongue 4 formed on the long side wall 2. The locking pieces 3g formed on the 3 side ribs 3d come into contact with each other. From this state, when the short side wall 3 is further rotated in the vertical direction, the above-mentioned locking piece 3g elastically deforms the elastic tongue piece 4 formed on the long side wall 2 outward, and the locking piece 3g The elastic tongue 4 is returned to its original position by the restoring force when the engagement protrusion 4a protruding from the elastic tongue 4 is exceeded, and is projected from the elastic tongue 4 The engaging protrusion 4a is positioned in contact with or close to the back surface 3g1 of the locking piece 3g formed on the side rib 3d of the short side wall 3. Further, when the engaging protrusion 4a protruding from the elastic tongue piece 4 is located in contact with or close to the back surface 3g1 of the locking piece 3g, it is shown in FIG. As described above, the push-up protrusion 5h of the lever rod 5 "constituting the lock release member 5 is in contact with the inclined lower surface 4a1 of the engagement protrusion 4 protruding from the elastic tongue piece 4 formed on the long side wall 2. Or it is comprised so that it may be located close.

As described above, when the folding container is assembled in a box shape, the engaging protrusions 4 a protruding from the elastic tongue 4 formed on the long side wall 2 are formed on the side ribs of the short side wall 3. Since it is located in contact with or close to the back surface 3g1 of the locking piece 3g formed on 3d, the locking piece formed on the short side wall 3 even if the short side wall 3 tends to fall in the direction of the bottom 1 3g abuts on the engagement protrusion 4a of the elastic tongue 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. Can be prevented from falling over. In this way, the long side wall 2 and the short side wall 3 are locked by the engaging protrusion 4a of the elastic tongue 4 formed on the long side wall 2 and the locking piece 3g formed on the short side wall 3. Since the lock release member 5 is not involved in the lock, it is possible to prevent a load from being applied to the lock release member 5 and damage to the lock release member 5 in a state of being assembled in a box shape.

As shown in FIG. 1, in order to fold a folded container assembled in a box shape as shown in FIG. 3, a handle recess of the unlocking member 5 disposed on the short side wall 3. 5c is put, and the tip of the elastic strip 5d1 mounted on the elastic strip support protrusion 3n1 of the hanging rib 3n suspended from the upper end horizontal rib 3b of the short side wall 3 is elastically deformed. When the unlocking member 5 is moved downward against the elastic force of the elastic strip 5d1, as shown in FIG. 11, the vertical ribs 3m of the insulator rod 5 "constituting the unlocking member 5 are moved. The part located on the operation part 5 'side from the vertical part pivots downward about the vertical rib 3m, and the part located on the projecting part 3e side from the vertical rib 3m of the lever rod 5 "moves the vertical rib 3m. Will be pivoted upwards to the center, and therefore the elasticity formed on the long side wall 2 The push-up protrusion 5h that abuts or approaches the inclined lower surface 4a1 of the engaging protrusion 4a protruding from the piece 4 moves in the direction of the distal end surface 4a3 of the engaging protrusion 4 along the inclined lower surface 4a1. Thus, the elastic tongue 4 is elastically deformed outward. Then, as shown in FIG. 14, the tip of the push-up protrusion 5 h of the lever rod 5 ″ constituting the unlocking member 5 is the engagement protrusion 4 a of the elastic tongue piece 4 formed on the long side wall 2. Since the engaging protrusion 4a of the elastic tongue piece 4 is configured so as to be disengaged from the locking piece 3g formed on the side rib 3d of the short side wall 3 when it comes into contact with the distal end surface 4a3. Thus, when the engaging protrusion 4a of the elastic tongue piece 4 formed on the long side wall 2 is disengaged from the locking piece 3g formed on the side rib 3d of the short side wall 3, the short side wall 3 is Tilt in the direction of the bottom part 1 and the opposing short side wall 3 is overlapped on the bottom part 1. Then, the long side wall 2 is tilted in the direction of the bottom part 1 and placed on the short side wall 3 superimposed on the bottom part 1. By folding the side wall 2, the folding container assembled in a box shape as shown in FIG. It can be folded as shown in.

As described above, when the folding container assembled in the box shape is folded, the pivoting pin 5f is moved down by operating the operation portion 5 ′ constituting the unlocking member 5 disposed on the short side wall 3. Lowers the lever rod 5 "inserted into the cylindrical bearing 5e formed in the operation portion 5 ', and the lever rod 5" is inserted into the fulcrum through-hole 3m1 into which the lever rod 5 "is inserted. Centering on the vertical rib 3m that is drilled, an insulator rod 5 "that is in contact with or close to the inclined lower surface 4a1 of the engaging projection 4a that projects from the elastic tongue 4 formed on the long side wall 2 is provided. Since the push-up protrusion 5h is configured to rotate using the lever principle so that it moves upward, the elasticity formed on the long side wall 2 is lower than when the entire conventional lock member is moved downward. It is formed in the engaging protrusion 4a of the tongue piece 4 and the side rib 3d of the short side wall 3. The force for lowering the unlocking member 5 when releasing the locked state with the stop piece 3g can be reduced. Therefore, the engagement protrusion 4a of the elastic tongue piece 4 formed on the long side wall 2 and the short side wall 3 can be reduced. The unlocking operation with the locking piece 3g formed on the side rib 3d can be performed quickly and smoothly.

Further, since the lever rod 5 ″ constituting the lock release member 5 is configured to be rotated using the lever principle, the lever rod 5 ″ of the conventional lock member is moved downward as compared with the case where the entire lock member is moved downward. Bending deformation is reduced, and therefore, the unlocking of the engaging protrusion 4a of the elastic tongue 4 formed on the long side wall 2 and the locking piece 3g formed on the side rib 3d of the short side wall 3 is ensured. Work can be performed and damage to the insulator 5 "can be prevented.

In the above-described embodiment, the long side wall 2 is hinged to the opposing long side bank portion 1 a having a height higher than the short side bank portion 1 b of the bottom portion 1, and the short side wall 3 is connected to the length of the bottom portion 1. While an example is shown in which the unlocking member 5 is disposed on the short side wall 3 and hinged to the opposing short side bank portion 1b having a lower height than the side bank portion 1a, the long side wall 2 is The bottom side 1 is hinged to the opposite long side bank portion 1a which is lower than the short side bank portion 1b, and the short side wall 3 is opposed to the bottom side 1 which is higher than the long side bank portion 2a. The lock release member 5 can be disposed on the long side wall 2 while being hingedly connected to the short side bank portion 1b. In this case, in order to fold the folding container assembled in a box shape, first, the long side wall 2 is folded down so as to overlap the bottom part 1, and then the short side wall 3 is tilted in the direction of the bottom part 1. In order to assemble the folded container into a box shape, first, the short side wall 3 is set up substantially vertically, and then the long side wall 2 is set up substantially vertical.

As described above, when the unlocking member 5 is disposed on the long side wall 2, the entire length of the unlocking member 5 is smaller than when the unlocking member 5 is disposed on the short side wall 3. Since it becomes longer, the bending deformation of the unlocking member 5 is reduced compared to the case where the entire locking member is moved downward as in the conventional locking member. The unlocking operation can be performed, and damage to the unlocking member 5 can be prevented.

As described above, from the folded state, the unlocking member 5 disposed on the opposed short side wall 3 that is first set up in the vertical direction is moved up and down, and the up and down movement of the operation unit 5 ′. Therefore, the lock release member 5 is less bent and deformed, and thus the long side wall is reliably connected. 2 and the short side wall 3 can be unlocked, and damage to the unlocking member 5 can be prevented.

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 of the folding container according to the present invention during assembly or folding. FIG. 3 is a perspective view of the folded container of the present invention in a folded state. 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 seen from the outer surface side of the short side wall of the folding container of the present invention. FIG. 6 is a partial perspective view seen from the inner surface side of the short side wall of the folding container of the present invention. FIG. 7 is an exploded perspective view of the unlocking member constituting the folding container of the present invention as seen from the back plate side. FIG. 8 is an exploded perspective view of the unlocking member constituting the folding container of the present invention as seen from the front plate side. FIG. 9 is an exploded perspective view of the short side wall and the unlocking member constituting the folding container of the present invention. FIG. 10 is a partial perspective view seen from the outer surface side of the short side wall in a state in which the unlocking member constituting the folding container of the present invention is disposed. FIG. 11 is also a partial perspective view seen from the outer surface side of the short side wall in a state where the unlocking member constituting the folding container of the present invention is disposed. FIG. 12 is a partial perspective view seen from the inner surface side of the short side wall in a state in which the unlocking member constituting the folding container of the present invention is disposed. FIG. 13 is a partially enlarged perspective view of a locked state of the long side wall and the short side wall constituting the folding container of the present invention. FIG. 14 is a partially enlarged perspective view of the unlocked state of the long side wall and the short side wall constituting the folding container of the present invention.

Explanation of symbols

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Claims (1)

From the folded state, the opposing side walls to be erected in a vertical direction first, next to the side walls facing each other, in the container folded and an opposing side wall which is erected in the vertical direction from the rear, is erected in a vertical direction after the The opposing side walls are provided with an unlocking member composed of one operating portion that moves up and down and a pair of lever rods that can rotate around a lever fulcrum by the vertical movement of the operating portion. The side ribs of the opposite side walls that stand upright in the rear are formed with locking pieces that are substantially perpendicular to the side ribs, and the opposite side walls that stand up in the vertical direction first. An elastic tongue piece is formed with an engaging protrusion having an inclined lower surface and an inclined side surface at its tip, and the folding container is assembled in a box shape in the vertical direction from the rear. The engaging pieces formed on the side ribs of the opposed side walls to be stood are substantially perpendicular to the engaging protrusions and the plate-like portions of the elastic tongue pieces formed on the opposing side walls that are initially raised in the vertical direction. By being configured to be positioned between the frame and the opposite side wall, the opposite side wall that is first set up in the vertical direction and the opposite side wall that is set up in the vertical direction from the rear are in a locked state. Furthermore, in a state where the folding container is assembled in a box shape, the push-up protrusion of the lever cage constituting the unlocking member disposed on the opposite side wall standing in the vertical direction from the rear is the first vertical It is comprised so that it may contact | abut or approach to the inclined lower surface of the engagement protrusion projected on the elastic tongue piece formed in the opposite side wall stood in the direction, and it stands in the perpendicular direction from the back Opposite The push-up protrusion of the lever cage constituting the unlocking member disposed on the wall is raised along the inclined lower surface of the engagement protrusion of the elastic tongue formed on the opposite side wall that is first set up in the vertical direction. By moving the elastic tongue, the elastic tongue piece is elastically deformed outward so that the locked state between the opposite side wall that is initially set in the vertical direction and the opposite side wall that is set in the vertical direction from the rear is released. A folding container, characterized in that it is constructed .

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