JP2005096815A - Folding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding container whose sidewalls provided to surround a base can be folded to overlap the base. <P>SOLUTION: The folding container consists of the base 1, a pair of opposite sidewalls 2 coupled via a hinge with a pair of opposite banks of the base and the other pair of opposite sidewalls 3 coupled via a hinge with the other pair of opposite banks of the base, wherein the container is structured to be set up into a box shape by raising the sidewalls approximately perpendicularly to the base and to be folded by tilting the sidewalls to overlap the base. A window frame 10 of an operation block L1 constituting an unlocking member L provided on the sidewall 3 to be tilted first from the set-up state in the box shape is located in a handle through hole 3e bored on the sidewall 3 to be tilted first. The operation block can be operated both from the outside of the set-up folding container and from the inside, thereby improving workability in folding the folding container set up in the box shape. <P>COPYRIGHT: (C)2005,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, 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 the long side wall and the short side wall substantially perpendicular to the bottom part, and by defeating the long side wall and the short side wall so as to overlap the bottom part, Folding containers are known that can be folded. In the assembled state in the box shape, the long side wall or the short side wall is configured to be locked by the lock mechanism so that the long side wall or the short side wall does not fall down in the bottom direction. It has a locking elastic piece having elasticity with a locking projection formed at the tip formed on the side wall, and in the state assembled in a box shape, the inside of one side wall where the locking elastic piece is not formed The side wall is configured not to fall in the bottom direction by abutting a locking projection formed on the locking elastic piece on the wall surface.

The folding container described above is provided with an unlocking member for releasing the lock state by the locking mechanism of the long side wall and the short side wall, and the unlocking member is arranged on the side wall on which the above-described locking elastic piece is not formed. It is installed. Then, by operating the unlocking member, the latching elastic piece is curved and deformed outward against the elastic force of the latching elastic piece, and the latching protrusion of the latching elastic piece is latched elastically. It is configured to be removed from the side wall with which the piece abuts and to release the locked state by the locking elastic piece.

The folding container in which the above-described unlocking member is disposed is disclosed in Patent Document 1 which is an earlier application of the present application.
JP 2003-165536 A

In the above-described folding container, since the unlocking member is disposed on the outer surface of the side wall, there is a problem that the mounting surface of the label, the label pressing member, and the like becomes narrow.

In addition, since the operation part of the unlocking member operated when releasing the lock can be operated only from the outside of the folding container and cannot be operated from the inside of the folding container, There was a problem that workability of release work was bad.

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

A bottom portion, one opposite side wall hinged to one opposite bank portion of the bottom portion, and another opposite side wall hinged to the other opposite bank portion of the bottom portion, with respect to the bottom portion In a folding container configured to fold by tilting the side wall so that it overlaps the bottom, the first is assembled into a box shape. The window frame portion of the operation block constituting the unlocking member disposed on the side wall to be tilted first is positioned within the handle through-hole formed in the side wall to be tilted first. Secondly, the lock state between one opposite side wall and the other opposite side wall is released only by the downward movement of the operation block constituting the lock release member. , And the Third, the lock release member, in which is disposed on the inner surface of the side wall to be brought down first.

The window frame portion of the operation block that constitutes the unlocking member disposed on the side wall that is tilted first from the state assembled in the box shape is in the through hole for the handle that is drilled in the side wall that is tilted first. Since the operation block can be operated from the outside or inside of the folding container assembled in a box shape, the folding work of the folding container assembled in a box shape can be performed. Improved workability.

Since the lock state between one opposite side wall and the other opposite side wall is released only by the downward movement of the operation block constituting the unlocking member, the through hole and the tip of the window frame portion of the operation block are released. When transporting a box-shaped folded container by inserting a hand into the handle through-hole drilled in the side wall that is knocked down, the operation block that constitutes the unlocking member is moved down by mistake. And it can prevent that the locked state of one opposing side wall and the other opposing side wall is cancelled | released.

Since the unlocking member is disposed on the inner surface of the side wall that is tilted first, the area of the attachment surface such as the label or the label pressing member can be increased.

Examples of the present invention will be described below, but unless the spirit of the present invention is exceeded,
The present invention is not limited to this embodiment.

First, the overall configuration of the folding container of the present invention will be described with reference to FIGS.

Reference numeral 1 denotes a bottom portion, and a long side bank portion 1a of the bottom portion 1 is connected to an appropriate hinge member. A long side wall 2 is connected to the short side bank portion 1b of the bottom portion 1 through a suitable hinge member. The short side wall 3 is connected. In this embodiment, the bottom 1
The long side bank portion 1a is configured to be 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 compactly by being tilted so as to overlap the short side wall 3 superimposed on the bottom 1. Further, from the state shown in FIG. 3, by standing the long side wall 2 substantially vertically and then standing the short side wall 3 substantially vertically, as shown in FIG.
Folded containers can be assembled into a box shape.

As shown in FIG. 4, the long side bank portion 1a of the bottom portion 1 has a plurality of known hinge hooks H1 having hooks at the upper end (in this embodiment, three hinge hooks H1). In the same manner, a plurality of the same hinge hooks H1 are provided on the short side bank portion 1b (two in this embodiment). An example in which a hinge hook H1 is provided is shown).

As shown in FIGS. 5 and 6, the long side wall 2 has a horizontally long and substantially rectangular plate-like portion 2 a, and the plate-like portion 2 a includes upper and lower ends of the plate-like portion 2 a and Peripheral ribs 2b extending perpendicularly to the surface of the plate-like portion 2a are provided along the left and right end sides. An appropriate number of reinforcing ribs 2c extending in the vertical and horizontal directions are appropriately formed on the plate-like portion 2a surrounded by the peripheral ribs 2b. Peripheral rib 2b and reinforcing rib 2c
Is formed on the outside of the folding container when assembled in a box shape, and the plate-like portion 2a on which such peripheral ribs 2b and reinforcing ribs 2c are not formed.
This flat surface forms the inner wall surface 2 a 1 of the long side wall 2.

At both vertical ends of the long side wall 2, the inner wall surface 2 of the long side wall 2 is substantially perpendicular to the plate-like portion 2a.
A vertically long engagement frame 2d extending in the a1 direction is formed, and a fitting hole 2d1 substantially parallel to the plate-like portion 2a is formed in the engagement frame 2d. In this embodiment, the engagement frame 2d
Although one example is shown in which one fitting hole 2d1 is formed, a plurality of fitting holes 2d1 can be formed in the vertical direction.

A U-shaped slit 2e is formed in the vicinity of both upper corners of the plate-like portion 2a of the long side wall 2, and the U-shaped slit 2e is formed so as to be surrounded by the slit 2e. This portion is formed in a cantilevered locking elastic piece 2f. At the tip of the locking elastic piece 2f, a locking projection 2 protruding beyond the inner wall surface 2a1 of the plate-like portion 2a.
An end face 2f2 on the engagement frame 2d side of the locking protrusion 2f1 is formed on a substantially vertical surface. Further, as is well known, a concave portion 2g is formed on the lower surface of the long side wall 2, and a hinge disposed on the long side bank portion 1a of the bottom portion 1 is formed on the opposing wall surface 2g1 forming the concave portion 2g. Corresponding to the hook H1, the hinge pin H2 is bridged.

As shown in FIGS. 7 and 8, the short side wall 3 has a horizontally long plate-like portion 3a having a substantially rectangular shape, and the periphery of the plate-like portion 3a is opposed to the plate-like portion 3a. Vertical circumferential ribs 3b are formed. Further, just below the upper rib portion 3b1 constituting the circumferential rib 3b, the plate-like portion 3a is assembled along the upper rib portion 3b1 outside (as shown in FIG. 1, assembled in a box shape). When swelled from the side located outside the folding container toward the inside (the side located inside the folding container when assembled in a box shape as shown in FIG. 1) By doing so, plate-like part 3a
An upper horizontally elongated recess 3c is formed over substantially the entire width of the upper horizontally elongated recess 3c.
The interior of c is partitioned by vertical partition ribs 3c1 formed at a predetermined interval.

As described above, the plate-like portion 3a is bulged from the outside to the inside, and the upper horizontally elongated recess 3c is formed in the plate-like portion 3a, whereby the inner surface of the plate-like portion 3a of the short side wall 3 (see FIG. As shown in FIG. 1, when assembled in a box shape, the upper laterally long convex portion 3d is located immediately below the upper rib portion 3b1 constituting the circumferential rib 3b of the folding container 3a1. Will be projected. The cross-sectional shape perpendicular to the length direction of the upper lateral protrusion 3d is substantially U-shaped, and the upper rib 3b1 constituting the circumferential rib 3b is the top of the upper lateral protrusion 3d. It is comprised so that a board may be comprised.

A horizontally-long rectangular handle through-hole 3e into which a hand can be inserted is perforated at the center of the plate-like portion 3a located immediately below the horizontally long recess 3c, in other words, directly below the top horizontally long convex portion 3d. It is installed. Further, the plate-like portion 3a located below the handle through-hole 3e is connected to the outside (
As shown in FIG. 1, when assembled in a box shape, from the side that is located outside the folding container, from the inside (as shown in FIG. 1, when assembled in a box shape) The lower concave portion 3f is formed over substantially the entire width of the handle through-hole 3e by being bulged toward the inner side of the folding container. In this way, the plate-like portion 3a is bulged from the outside to the inside, and the lower concave portion 3f is formed in the plate-like portion 3a.
'Will be projected. Note that the inner rib of the handle through-hole 3e is perpendicular to the plate-like portion 3a, and the upper rib portion 3b constituting the circumferential rib 3b from the plate-like portion 3a.
1 is formed in a substantially square-shaped window frame 3g. The substantially square-shaped window frame 3g has a horizontal upper part 3g1, a horizontal lower part 3g2, and a horizontal upper part 3g1. It is formed of opposing vertical portions 3g3 that connect both ends of the lower portion 3g2.

A vertically extending frame 3h extending substantially parallel to the plate-like portion 3a from the tip of the vertical rib portion 3b2 is formed in the substantially upper half of the opposing vertical rib portion 3b2 constituting the circumferential rib 3b. A fitting projection 3j projects from the overhang frame 3h. As shown in FIG. 1, when the folding container is assembled into a box shape, the fitting protrusion 3 j formed on the overhanging frame 3 h formed on the short side wall 3 is formed on the long side wall 2. Formed engagement frame 2
It is configured to be inserted into the fitting hole 2d1 formed in d. When there are a plurality of fitting holes 2d1 formed in the engaging frame 2d formed in the long side wall 2, the fitting hole 2
Corresponding to the number of d 1, the same number of fitting protrusions 3 j are formed on the overhanging frame 3 h of the short side wall 3.

With the configuration described above, the inner side 3a1 side of the plate-like portion 3a of the short side wall 3 is partitioned by the upper laterally long convex portion 3d, the circumferential rib 3b, the lower convex portion 3f ′, and the vertical portion 3g3 of the window frame 3g, which will be described later. A pair of lock release member storage recesses A in which lock release members to be stored are stored
Are arranged side by side.

A rib-like lower regulating member 4 perpendicular to the plate-like portion 3a is formed on the inner surface 3a1 located in the unlocking member housing recess A of the plate-like portion 3a of the short side wall 3, and the lower regulating member 4 Is parallel to the bottom plate 3d1 forming the upper laterally convex portion 3d and is located on the handle through-hole 3e side (hereinafter referred to as the central horizontal portion) 4a, and the periphery of the central horizontal portion 4a. The substantially rib-shaped bent portion 4b formed on the vertical rib portion 3b2 side of the rib 3b, the inclined portion 4c inclined upward toward the vertical rib portion 3b2, and the vertical rib portion 3b2 from the inclined portion 4c. End side horizontal portion 4 extending beyond the extended frame 3h
d. Then, the lower concave portion 4b is formed by the downward bent portion 4b.
1 is formed.

The center side horizontal portion 4a of the lower regulating member 4 and the bottom plate 3d1 of the upper laterally protruding portion 3d.
An upper concave portion 5a is formed in the bottom plate 3d1 of the upper laterally long convex portion 3d so as to be symmetrical with the lower concave portion 4b1 of the lower regulating member 4 with the horizontal center line therebetween, and above the lower regulating member 4 An inclined surface 5b inclined downward is formed on the bottom plate 3d1 of the upper horizontally long convex portion 3d in line symmetry with the inclined portion 4c, and is further symmetrical with the end side horizontal portion 4d of the lower regulating member 4. In addition, an end portion horizontal portion surface 5c is formed. in this way,
The bottom plate 3d1 of the upper horizontally long convex portion 3d has a horizontal surface (hereinafter referred to as a central horizontal surface) 5d located on the handle through-hole 3e side facing the central horizontal portion 4a of the lower regulating member 4.
An upper restricting surface 5 is formed which includes an upper concave portion 5a, an inclined surface 5b, and an end-side horizontal portion surface 5c.

Moreover, the edge part side horizontal part 4d which forms the lower part regulating member 4 mentioned above and the edge part side horizontal part surface 5c which forms the upper part regulation surface 5 are connected by the bridge | crosslinking piece 6, and the bridge | crosslinking piece 6 and plate shape A slit 7 is formed between the inner surface 3a1 of the portion 3a.

Further, a lower regulating protrusion 4a1 extending upward is provided on the central horizontal portion 4a that forms the lower regulating member 4 described above, and a central horizontal surface 5d that forms the upper regulating surface 5 is provided. The same upper restriction protrusion 5d1 is suspended from the lower restriction protrusion 4a1.

Furthermore, in the middle of the lower regulating member 4 and the upper regulating surface 5 described above, an inner surface 3a1 of the plate-like portion 3a located in the vicinity of the handle through hole 3e is formed at the inner edge of the handle through hole 3e. The locking piece 8 is erected along the opposing vertical portion 3g3 of the window frame 3g,
An engaging hook 8 a extending in the direction of the handle through-hole 3 e is projected from the distal end portion of the locking piece 8.

Still further, the opposed vertical portion 3 of the window frame 3g formed at the inner edge of the handle through-hole 3e.
An engaging hook 9 extending toward the handle through-hole 3e is projected from the tip of g3. Further, as is well known, a recess 3 i is formed on the lower surface of the short side wall 3, and a hinge disposed on the short side bank portion 1 b of the bottom 1 is formed on the opposing wall surface 3 i 1 forming the recess 3 i. Corresponding to the hook H1, the hinge pin H2 is bridged.

The bottom portion 1 and the long side wall 2 described above are hinged by engaging a hinge pin H2 disposed on the bottom surface of the long side wall 2 with a hinge hook H1 disposed on the long side bank portion 1a of the bottom portion 1. Similarly, the bottom 1 and the short side wall 3 are arranged on the lower surface of the short side wall 3 on the hinge hook H1 arranged on the short side bank portion 1b of the bottom 1. Further, the hinge pin H2 is engaged to be hinged.

  Next, the unlocking member L will be described with reference to FIGS. 9 and 10.

The unlocking member L includes one operation block L1 and a pair of elastic piece extrusion blocks L2 that are moved by the operation of the operation block L1.

The operation block L1 is a substantially frame-shaped window frame portion 10 formed of a strip-shaped plate material.
The window frame portion 10 includes an upper frame 10a, a lower frame 10b, and an upper frame 10a.
And opposite side frames 10c that connect both ends of the lower frame 10b. The window frame 10 includes a side frame 1 facing the upper frame 10a and the lower frame 10b.
A horizontally long rectangular through-hole 10d surrounded by 0c and into which a hand can be inserted is formed.

The window frame portion 10 of the operation block L1 described above is configured to be inserted into the window frame 3g formed at the inner edge of the handle through hole 3e formed in the short side wall 3, and the operation block L1. When the window frame portion 10 is inserted into the window frame 3g formed at the inner edge of the handle through hole 3e, the opposing side frame 10c of the window frame portion 10 of the operation block L1 is
The window frame 3g formed on the inner edge of the handle through-hole 3e is positioned so as to be close to the opposing vertical portion 3g3, and the operation block L1 is provided with the handle through-hole 3e.
In the window frame 3g formed at the inner edge of e, it is configured to be movable by a predetermined distance in the vertical direction.

A pair of connecting pieces 11 are connected at predetermined intervals along the upper frame 10a and the lower frame 10b from both ends of the outer wall surfaces of the opposing side frames 10c constituting the window frame portion 10 of the operation block L1. Moreover, the extrusion part 12 is connected with the connection piece 11 in parallel with the window frame part 10, and is connected.

The extrusion part 12 mentioned above is the upper frame 1 extended along the upper frame 10a of the window frame part 10. FIG.
2a, a lower frame 12b that extends along the lower frame 10b of the window frame 10 and is shorter than the upper frame 12a, a tip of the upper frame 12a on the connecting piece 11 side, and a connecting piece 11 of the lower frame 12b
While connecting the front end of the side, one side frame 10c of the window frame portion 10 and a predetermined gap D1
The vertical frame 12c positioned with the upper frame 12a is connected to the distal end of the upper frame 12a far from the coupling piece 11 and the distal end of the lower frame 12b far from the coupling piece 11 and the lower frame 12
and an inclined frame 12d inclined upward from b to the upper frame 12a.
In addition, the upper frame 12a, the lower frame 12b, and the vertical frame 12 formed of a strip-shaped plate material.
In a region surrounded by c and the inclined frame 12d, a flat plate portion 12e is disposed,
The flat plate portion 12e is disposed at the center in the width direction of the upper frame 12a, the lower frame 12b, the vertical frame 12c, and the inclined frame 12d.

A locking slit 12e1 that is substantially parallel to the vertical frame 12c of the extrusion part 12, in other words, substantially parallel to the side frame 10c of the window frame part 10, is formed in the plate part 12e of the extrusion part 12 described above. Further, as described above, a gap D1 is formed between the side frame 10c on the extrusion part 12 side of the window frame part 10 and the vertical frame 12c of the extrusion part 12 facing the side frame 10c. Engagement hooks 10c1 projecting in the direction of the gap D1 project from the side frame 10c of the window frame portion 10 on the pushing portion 12 side.

The pair of elastic piece extrusion blocks L2 constituting the unlocking member L has a base portion 13. The base portion 13 includes an upper frame 13a, a lower frame 13b longer than the upper frame 13a, and one end of the upper frame 13a. The front frame 13c, which is substantially U-shaped, which connects one end portion of the lower frame 13b and the other end portion of the lower frame 13b and the other end portion of the lower frame 13b, There is an inclined frame 13d inclined upward from the frame 13b toward the upper frame 13a. In an area surrounded by the upper frame 13a, the lower frame 13b, the substantially frame-shaped front frame 13c and the inclined frame 13d, there is an elastic piece extrusion block L2.
In consideration of the strength and rigidity of the flat plate portion 13e as necessary,
Moreover, the vertical connection rib 13f which connects the upper frame 13a and the lower frame 13b can also be formed.

At the tip of the substantially frame-shaped front frame 13c that forms the elastic piece extrusion block L2,
A connecting portion 14 is connected, and a pair of elastic strips 15 are formed at the tip of the connecting portion 14 so as to be inclined in the vertical direction and in the direction of the substantially frame-shaped front frame 13c. Further, the elastic piece extrusion block L2 is formed with a pressing piece 16 by further extending the connecting portion 14 beyond the elastic strip 15. Further, on the upper surface of the upper frame 13a, a guide protrusion 13a1 is projected along the longitudinal direction of the upper frame 13a.
Further, the guide protrusion 1 is also formed on the lower surface of the lower frame 13b along the longitudinal direction of the lower frame 13b.
3b1 is suspended.

Next, attachment to the inner surface 3a1 of the short side wall 3 of the unlocking member L composed of the one operation block L1 and the pair of elastic piece extrusion blocks L2 described above will be described.

While inserting the window frame portion 10 of the operation block L1 constituting the unlocking member L into the window frame 3g formed at the inner edge of the handle through hole 3e drilled in the short side wall 3,
In the gap D1 formed between the side frame 10c on the extrusion part 12 side of the window frame part 10 of the operation block L1 and the vertical frame 12c of the extrusion part 12 facing the side frame 10c, the through hole 3e for the handle is provided. By engaging the opposing vertical portion 3g3 of the window frame 3g formed on the inner edge, the engaging hook 9 protruding from the tip of the vertical portion 3g3 and the side frame 10 of the window frame portion 10 are provided.
The engaging hook 10c1 protruding from c is engaged. Further, the plate-like portion 3 of the short side wall 3
The locking piece 8 erected on the inner surface 3a1 of a is inserted into the locking slit 12e1 formed in the plate portion 12e of the pushing portion 12 so as to be movable up and down, and at the tip of the locking piece 8 The formed locking hook 8 a is engaged with the plate portion 12 e of the pushing portion 12. In this way, the operation block L1 constituting the unlocking member L is replaced with a pair of unlocking member housing recesses A in which the pushing portion 12 of the operation block L1 is formed on the inner surface 3a1 side of the plate-like portion 3a of the short side wall 3. It arrange | positions in the inner surface 3a1 of the short side wall 3 so that it may accommodate.

Further, the elastic piece extrusion block L2 constituting the lock release member L is disposed in the lock release member housing recess A. The elastic piece extrusion block L2 is formed by the inclined frame 13d of the elastic piece extrusion block L2 being locked. Operation block L1 constituting release member L
The pressing piece 16 of the elastic piece extrusion block L2 is disposed in the slit 7 formed between the bridging piece 6 and the inner surface 3a1 of the plate-like portion 3a. Of the pair of elastic strips 15 arranged in the elastic piece extrusion block L2, the distal end portion of the elastic strip 15 positioned below the lower bent portion 4b of the lower regulating member 4 is arranged. Of the pair of elastic strips 15 inserted into the lower recess 4b1 formed by the elastic piece extrusion block L2, the upper end of the elastic strip 15 positioned above forms the upper regulating surface 5 It is configured to be inserted into the recess 5a. And the front-end | tip part of the elastic strip 15 located above contact | abuts to the side surface 5a1 located in the vertical rib part 3b2 side of the circumferential rib 3b of the upper recessed part 5a which forms the upper control surface 5, and is located below. The distal end portion of the elastic strip 15 is configured to abut on a side surface 4b1 'located on the vertical rib portion 3b2 side of the circumferential rib 3b of the lower recess 4b1 of the lower regulating member 4, and a pair of elastic piece extrusions The blocks L <b> 2 are urged by the elastic strips 15 toward each other.

Further, when the elastic piece pushing block L2 constituting the unlocking member L is disposed in the unlocking member housing recess A, the guide protrusion 13a1 protruding from the upper frame 13a of the elastic piece pushing block L2 is provided. The upper regulating protrusion 5d1 suspended from the central horizontal surface 5d forming the upper regulating surface 5 and the plate-like portion 3 located in the lock release member housing recess A
The guide protrusion 13b1 inserted into the gap formed between the inner surface 3a1 of the a and suspended from the lower surface of the lower frame 13b of the elastic piece extrusion block L2 is a central horizontal portion 4a that forms the lower regulating member 4. The lower restricting protrusion 4a1 projecting from the inner wall 3a1 is configured to be inserted into a gap formed between the inner surface 3a1 of the plate-like portion 3a located in the lock release member housing recess A. With this configuration, the elastic piece extrusion block L2 can be prevented from coming off from the short side wall 3, and the sliding movement along the inner surface 3a1 of the plate-like portion 3a of the elastic piece extrusion block L2 can be performed smoothly. It can be carried out.

In the state where the unlocking member L is disposed on the inner surface 3a1 of the short side wall 3, as shown in FIG. 12, the tip of the pressing piece 16 of the elastic piece pushing block L2 is
It is comprised so that it may not protrude from the overhang | projection frame 3h. Also, as mentioned above,
The pair of elastic piece extrusion blocks L2 are biased toward each other by the elastic strips 15, and the inclined frame 13d of the base portion 13 of the elastic piece extrusion block L2 and the extrusion portion 12 of the operation block L1. The operation block L1 is urged upward by the elastic force of the elastic strip 15, and the upper frame 10a of the window frame portion 10 of the operation block L1 is It arrange | positions so that it may contact | abut or adjoin to the horizontal upper part 3g1 of the window frame 3g arrange | positioned at the short side wall 3. FIG. Therefore, when carrying a folded container assembled in a box shape, a hand is placed in the through hole 3e for the handle provided in the short side wall 3 and the through hole 10d in the window frame portion 10 provided in the operation block L1. Even if it is inserted, the operation block L1 constituting the unlocking member L is configured to abut against the window frame 3g disposed on the short side wall 3 so as not to move up.
Further, the window frame 3 formed at the inner edge of the lower frame 10b of the window frame portion 10 and the through hole 3e for the handle.
A predetermined interval is formed between the horizontal upper portion 3g1 of g so that the operation block L1 can move downward.

In the state where the folding container is assembled in a box shape as shown in FIG. 1, the extended frame of the short side wall 3 is inserted into the fitting hole 2 d 1 formed in the engaging frame 2 d of the long side wall 2. A locking protrusion 2f that forms a locking elastic piece 2f formed near the upper end corners of the plate-like portion 2a of the long side wall 2 while the fitting protrusion 3j formed on 3h is fitted.
An end surface 2 f 2 on the side of the first engaging frame 2 d is in contact with the overhanging frame 3 h of the short side wall 3.

In order to fold the folding container assembled in the box shape as shown in FIG. 3, first, the unlocking member L disposed on the short side wall 3 is firstly folded.
10d and the short side wall 3 formed in the window frame 10 of the operation block L1 constituting
A hand is inserted into the handle through-hole 3e drilled in the plate-like portion 3a from the inside or the outside of the folding container assembled in a box shape, and the lower part of the window frame portion 10 of the operation block L1. With your hand on the frame 10b, as shown in FIG.
The operation block L1 is moved downward.

As shown in FIG. 13, the downward movement of the operation block L1 described above forms the inclined frame 13d in which the inclined frame 12d of the pushing portion 12 constituting the operation block L1 is in contact with the inclined frame 12d. The elastic piece extruding block L2 is moved in the direction of the long side wall 2, and the locking elastic piece 2f formed on the long side wall 2 is resisted against the elastic force by the pressing piece 16 of the elastic piece extruding block L2. The locking projection 2f1 of the locking elastic piece 2f is bent away from the protruding frame 3h of the short side wall 3 by bending outward. Thereafter, the substantially vertical short side wall 3 is tilted in the direction of the bottom 1 and overlapped with the bottom 1 as shown in FIG. Thereafter, the substantially vertical long side wall 2 was tilted in the direction of the bottom part 1 and overlaid on the short side wall 3 superimposed on the bottom part 1, thereby being assembled into a box shape as shown in FIG. The folding container can be folded as shown in FIG. In the downward movement of the operation block L1, the pair of elastic strips 15 disposed in the elastic piece push-out block L2 are curved and deformed in a direction approaching each other against the elastic force. Become.

When the folding container assembled in a box shape is folded, as described above, the user touches the lower frame 10b of the window frame portion 10 of the operation block L1 to move the operation block L1 downward. After the locking projection 2f1 of the locking elastic piece 2f formed on the long side wall 2 is separated from the overhanging frame 3h of the short side wall 3, a pair of elastic members are released by releasing the hand from the operation block L1. The single extrusion block L2 is an elastic strip 1
5 is moved in the direction of the operation block L1, and the upper frame 10a of the window frame portion 10 of the operation block L1 is moved against the bottom plate 3d1 of the upper horizontally long convex portion 3d formed on the short side wall 3. It will return to the original position, which is the contact or close position.

As described above, since the unlocking member L is configured to be disposed on the inner surface 3a1 of the plate-like portion 3a of the short side wall 3, the outer surface of the plate-like portion 3a (as shown in FIG.
When assembled in a box shape, the area of the attachment surface F such as a label or a label pressing member formed on the outer surface of the folding container can be increased.

In the state where the folding container is assembled in a box shape, the short side wall 3
The window frame portion 10 of the operation block L1 constituting the unlocking member L disposed on the inner surface 3a1 of the plate-like portion 3a is positioned in the handle through-hole 3e formed in the short side wall 3. Since it is configured, the operation block L1 can be operated from the outside or the inside of the folding container assembled in a box shape. Therefore, the folding work of the folding container assembled in a box shape can be performed. Improves.

Further, only when the operation block L1 constituting the unlocking member L is moved downward, the elastic piece push-out block L2 is pushed out, and the locking projection of the locking elastic piece 2f formed on the long side wall 2 Since the 2f1 is separated from the overhanging frame 3h of the short side wall 3 to release the locked state between the long side wall 2 and the short side wall 3, the handle through-hole 3e formed in the short side wall 3 is provided. And when putting the hand into the through hole 10d of the window frame 10 of the operation block L1 and transporting the folded container assembled in a box shape, the operation block L1 constituting the unlocking member L is moved down by mistake. It is possible to prevent the locked state between the long side wall 2 and the short side wall 3 from being released.

In addition, although the example which has arrange | positioned the lock release member L to the short side wall 3 fallen previously from the state assembled in the box shape is shown in the Example mentioned above, the state assembled in the box shape is shown. In this case, the long side wall 2 can be tilted first. In this case, the unlocking member L is disposed on the long side wall 2 that is tilted first, and is tilted first. The height of the long side bank portion 1a of the bottom portion 1 to which the long side wall 2 is hinged is formed lower than the height of the short side bank portion 1a of the bottom portion 1 to which the short side wall 3 to be tilted later is hinged. Will be.

FIG. 1 is a perspective view of the folding container of the present invention in a state of being assembled into a box shape. FIG. 2 is a perspective view of the folding container of the present invention during folding or assembly. FIG. 3 is a perspective view of the folding container of the present invention in a folded state. FIG. 4 is a perspective view of the bottom part of the folding container of the present invention. FIG. 5 is a perspective view from the inner surface side of the long side wall constituting the folding container of the present invention. FIG. 6 is a perspective view from the outer surface side of the long side wall constituting the folding container of the present invention. FIG. 7 is a perspective view from the inner surface side of the short side wall constituting the folding container of the present invention. FIG. 8 is a perspective view from the outer surface side of the short side wall constituting the folding container of the present invention. FIG. 9 is an exploded perspective view of the unlocking member constituting the folding container of the present invention. FIG. 10 is a perspective view of the operation block constituting the lock release member of the folding container of the present invention. FIG. 11 is a perspective view from the inner surface side of the short side wall of the folding container of the present invention in a state where the unlocking member is disposed. FIG. 12 is a front view from the inner surface side of the short side wall of the folding container of the present invention in which the unlocking member is disposed. FIG. 13 is a front view from the inner surface side of the short side wall of the folding container of the present invention in a state where the unlocking member is disposed.

Explanation of symbols

L ... Unlocking member L1 ... Operation block L2 ...・ Elastic piece extrusion block 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Bottom 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side wall 3 ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ Short side wall 3e ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Through hole for handle 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lower regulating member・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Upper restriction surface 10 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Window frame

Claims (3)

A bottom portion, one opposite side wall hinged to one opposite bank portion of the bottom portion, and another opposite side wall hinged to the other opposite bank portion of the bottom portion, with respect to the bottom portion In a folding container configured to be folded by tilting the side wall so that it overlaps the bottom, the box is assembled from the state assembled in the box shape. The window frame portion of the operation block constituting the lock release member disposed on the side wall to be tilted first is configured to be positioned in the through hole for the handle drilled in the side wall to be tilted first. Features a folding container. 2. The folding container according to claim 1, wherein the lock state between one opposite side wall and the other opposite side wall is released only by downward movement of the operation block constituting the lock release member. . The folding container according to claim 1, wherein the unlocking member is disposed on an inner surface of the side wall that is tilted first.

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