JP2002046734A - Folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform the engagement between an engaging frame section which is arranged on one side wall, and en engaging frame section which is arranged on the other side wall, and at the same time, prevent the engaged state between the engaging frame sections from being disengaged when a folding container is transported by a worker, and also, improve the workability in the building up work and the folding work of the folding container. SOLUTION: For this folding container, the side walls 2 and 3, which are arranged in a manner to surround a bottom section 1, are folded to be superposed on the bottom section. In such a folding container, when the folding container is built up, a fitting block 3e formed on the engaging frame section 3' of the side wall 3 is inserted in a fitting hole 2e formed on the engaging frame section 2' of the other side wall 2. Then, the fitting block relatively moves upward to the fitting hole. Thus, a fastening protuberance 3e' formed on the fitting block is fastened to a specified corner section 2i formed on the engaging frame section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container which can be folded so that a side wall disposed so as to surround a bottom portion overlaps the bottom portion.

[0002]

2. Description of the Related Art Conventionally, a long side wall connected to a long side opposite to a bottom having a substantially rectangular planar shape via a hinge portion is provided.
Also known is a folding container consisting of a short side wall connected to the opposite short side part of the bottom part via a hinge part.In a folded state, the container is folded so that the short side wall overlaps the bottom part, Further thereon, the long side wall is folded, and the long side wall in the folded state stands upright to the bottom, and then the short side wall in the folded state stands upright to the bottom. By doing
It is configured to be assembled in a box shape.

[0003] In the state where the above-mentioned conventional folding container is assembled, it is assembled by engaging an engagement frame portion provided on a long side wall with an engagement frame portion provided on a short side wall. The short side wall of the folded container in the collapsed state is configured so that it does not easily fall inside the assembled folded container.

[0004]

In the conventional folding container, the short side wall of the assembled folding container is disposed on the long side wall so that the short side wall does not easily fall inside the assembled folding container. It is configured so that the engagement state between the engagement frame portion and the engagement frame portion provided on the short side wall is strengthened. During the operation of folding the folding container by rotating the short side wall toward the bottom, the engagement between the engagement frame portion provided on the long side wall and the engagement frame portion provided on the short side wall is performed. There is a problem that it is difficult to release the state, it takes time to fold the folding container, and the workability deteriorates.

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

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a foldable container in which a side wall disposed so as to surround a bottom is folded so as to overlap the bottom. At the time of assembly, after the fitting block formed in the engaging frame portion of one side wall is inserted into the fitting hole formed in the engaging frame portion of the other side wall, the fitting block is By moving upward relative to the fitting hole, a locking projection formed on the fitting block is locked to a predetermined corner formed on the engagement frame. It is composed.

[0007]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it exceeds the gist of the present invention.

[0008] Like the above-mentioned conventional folding container, the folding container of this embodiment also has a long side wall connected to the opposite long side of the bottom 1 having a substantially rectangular planar shape via a hinge. 2 and a short side wall 3 connected to the opposite short side of the bottom 1 via a hinge. In addition, the height of the long side wall (hereinafter, referred to as a bottom long side wall) 1a of the bottom portion 1 of the folding container 1 is short side wall (hereinafter, referred to as a bottom short side wall) 1.
b, so that when the assembled folding container is folded, the short side wall 3 is first fallen over the bottom 1.

[0009] As shown in FIG. 2, the folding container is folded on the bottom 1 by folding the short side wall 3 inward from the state of being assembled in the box shape shown in FIG.
Next, similarly, the long side wall 2 is folded inward by folding it over the bottom 1 and the short side wall 3 as shown in FIG. Conversely, FIG.
To assemble as shown in FIG. 1 from the folded state shown in FIG. 1, the long side wall 2, which is overlaid on the bottom 1 and the short side wall 3, is set upright, Assemble the folding container into a box by standing 3 vertically.

Next, the long side wall 2 will be described mainly with reference to FIGS. 2, 4, and 6 to 8. FIG.

The long side wall 2 has a horizontally long rectangular plate-like portion 2a.
And a lower horizontal frame 2b extending outward from the lower end of the plate portion 2a, and an upper horizontal frame 2c extending outwardly at the upper end of the plate portion 2a. Further, an appropriate number of vertical frames 2d connecting both ends of the lower horizontal frame 2b and the upper horizontal frame 2c and an intermediate portion thereof are provided on the outer surface of the plate-shaped portion 2a.

Above both vertical ends of the plate portion 2a constituting the long side wall 2, an engagement frame portion 2 'perpendicular to the plate portion 2a extends in the direction of the short side wall 3. . An upper fitting hole 2e is formed in the engaging frame portion 2 ', and an intermediate fitting hole 2f is formed below the upper fitting projection 2e.
Further, a lower fitting hole 2g is formed below the intermediate fitting hole 2f. The upper fitting hole 2e and the middle fitting hole 2
f and the lower fitting hole 2g are the plate-like portions 2 forming the long side wall 2.
It is formed so as to be parallel to a.

Next, the short side wall 3 will be described mainly with reference to FIGS. 2, 5, and 6 to 8. FIG.

The short side wall 3 has a horizontally long rectangular plate-like portion 3a.
And a lower horizontal frame 3b extending outward from the lower end of the plate portion 3a, and an upper horizontal frame 3c extending outward from the upper end of the plate portion 3a is formed. Further, a vertical frame 3d connecting both ends of the lower horizontal frame 3b and the upper horizontal frame 3c is formed. Reference numeral 3 'denotes an engagement frame portion extending outside the vertical frame 3d and formed by extending an upper portion of the plate-shaped portion 3a.
Are formed at positions where they come into contact with or approach the above-mentioned engaging frame 2 ′ formed on the long side wall 2 when the folding container is assembled.

An upper fitting block 3e is formed on the engaging frame 3 'of the short side wall 3 and has an engaging projection 3e' extending upward at the end thereof and extending horizontally outward. It is. The upper fitting block 3e is provided with an engaging frame 2 ′ of the long side wall 2.
Is inserted into the upper fitting hole 2e formed at the same time, and the locking projection 3e 'is configured to be located outside the upper fitting hole 2e. As shown in FIG. 7, when the upper fitting block 3e is inserted into the upper fitting hole 2e formed in the engaging frame 2 'of the long side wall 2, the locking projection 3e'.
Is located outside the upper fitting hole 2e, and the upper end 3e ″ of the locking projection 3e ′ is the same height as the top part 2e ′ constituting the upper fitting hole 2e, or It is configured to be located slightly lower.

Also, below the upper fitting block 3e,
At the tip, an intermediate fitting plate-like member 3f having an elasticity extending in the outer horizontal direction and having an upwardly extending locking projection 3f 'is formed. As shown in FIG.
When the intermediate fitting plate-like member 3f is inserted into the intermediate fitting hole 2f formed in the engagement frame 2 'of the long side wall 2, the locking projection 3
f ′ abuts on the top portion 2f ′ of the intermediate fitting through-hole 2f, and the intermediate fitting plate-like member 3f curves slightly downward,
When the locking projection 3f 'comes out of the intermediate fitting hole 2f, the intermediate fitting plate-like member 3f moves upward due to its elasticity, and the locking projection 3f' of the intermediate fitting plate-like member 3f is moved to the intermediate position. Fitting hole 2f
Corner 2 of the engagement frame 2 'of the long side wall 2 located above the
h.

Further, below the intermediate fitting plate-like member 3f,
The lower end of the lower fitting block 3g is formed such that the distal end portion is tapered and extends in the outer horizontal direction. The lower fitting block 3g is configured to be inserted into a lower fitting hole 2g formed in the engaging frame portion 2 'of the long side wall 2. The width (width in the vertical direction with respect to the protruding direction) w1 of the lower fitting block 3g is equal to the width w of the lower fitting hole 2g.
2, and when it is inserted into the lower fitting hole 2g, between the upper surface 3g 'of the lower fitting block 3g and the top portion 2g' of the lower fitting hole 2g, when it is inserted into the lower fitting hole 2g.
It is configured such that a predetermined gap is formed.

The upper fitting block 3e, the intermediate fitting plate-like member 3f and the lower fitting block 3g formed on the engaging frame 3 'of the short side wall 3 are perpendicular to the engaging frame 3'. It is formed so as to project in the direction. 3 "is
An end side wall frame formed below the engagement frame portion 3 ', and when the folding container is assembled, the above-described long side wall 2 is formed.
Is configured to be able to enter a space located below the engagement frame 2 ′.

To assemble the foldable container from the folded state shown in FIG. 3 as shown in FIG. 1, the long side wall 2 is superimposed on the bottom 1 and the short side wall 3. Is vertically set, and then the short side wall 3 is rotated in the vertical direction.
First, the lower fitting block 3g formed on the engaging frame portion 3 'of the short side wall 3 is brought into contact with or approaching the engaging frame portion 2' formed on the long side wall 2. It is inserted into the lower fitting hole 2g formed in the engaging frame portion 2 'of the side wall 2. Since the width w1 of the lower fitting block 3g is slightly smaller than the width w2 of the lower fitting hole 2g, the lateral movement of the lower fitting block 3g is substantially restricted. Therefore, the movement of the short side wall 3 with respect to the long side wall 2 is suppressed, and the subsequent intermediate fitting plate member 3
f into the intermediate fitting hole 2f and the upper fitting block 3e
Can be reliably and easily inserted into the upper fitting hole 2e.

Next, the intermediate fitting plate-like member 3f formed on the engagement frame 3 'of the short side wall 3 is engaged with the engagement frame 2' of the long side wall 2.
Is inserted into the intermediate fitting hole 2f formed at this time. In this case, as described above, the locking projection 3f '
f, and makes contact with the top part 2f ′ forming the intermediate fitting plate member 3
f is slightly curved downward, while the intermediate fitting plate-like member 3
f is inserted into the intermediate fitting hole 2f formed in the engagement frame 2 ′ of the long side wall 2.

Thereafter, the upper fitting block 3e formed on the engaging frame 3 'of the short side wall 3 is engaged with the engaging frame 2' of the long side wall 2.
Is inserted into the upper fitting hole 2e formed at the bottom. In the process of inserting the upper fitting block 3e into the upper fitting hole 2e, the locking projection 3e 'of the upper fitting block 3e is configured not to abut on the top portion 2e' of the upper fitting hole 2e. Therefore, the upper fitting block 3e can be easily formed without resistance.
It will be inserted into the upper fitting hole 2e. Then, when the upper fitting block 3e is inserted into the upper fitting hole 2e formed in the engaging frame portion 2 'of the long side wall 2, as shown in FIG. Is located outside the upper fitting hole 2e, and the upper end 3e ″ of the locking projection 3e ′.
Is configured to be at the same height as the top part 2e 'constituting the upper fitting hole 2e or at a position slightly lower than the top part 2e'.

Then, the long side wall 2 is set upright with respect to the bottom portion 1 and then the short side wall 3 is rotated in the vertical direction so that the engagement frame portion 3 ′ formed on the short side wall 3 makes the long side wall 2. When the folding container is assembled by contacting or approaching the engagement frame 2 ′ formed on the short side wall, the upper fitting block 3e formed on the engagement frame 3 ′ of the short side wall 3 is connected to the long side wall. 2 into the upper fitting hole 2e formed in the engaging frame portion 2 '
The intermediate fitting plate-shaped member 3f formed in the engaging frame 3 'of the short side wall 3 is inserted into the intermediate fitting hole 2f formed in the engaging frame 2' of the long side wall 2, and the intermediate fitting is performed. The locking projection 3f 'coming out of the hole 2f causes the long side wall 2 located above the intermediate fitting hole 2f to move upward due to the elasticity of the intermediate fitting plate member 3f.
Is locked to the upper corner 2h of the engagement frame 2 '. Further, the lower fitting block 3 formed on the engaging frame 3 ′ of the short side wall 3.
g is inserted into the lower fitting hole 2g formed in the engagement frame portion 2 'of the long side wall 2. Thus, in the state where the folding container is assembled, the upper fitting block 3e
The upper end 3e ″ of the locking projection 3e ′
e is the same height as the top 2e ', or the top 2
e 'is located at a position slightly lower than e', and therefore, the engaging projection 3e 'of the upper fitting block 3e and the engaging frame 2' of the long side wall 2 located above the upper fitting through hole 2e. Is not engaged with the upper corner 2i, but the locking projection 3f 'of the intermediate fitting plate-like member 3f is located above the engaging frame 2' of the long side wall 2 located above the intermediate fitting hole 2f. Since the short side wall 3 is locked to the corner 2h, the short side wall 3 does not easily fall inside the assembled folding container.

After the articles are stored in the folding container assembled as described above, the articles are stored by inserting a hand into the horizontally long through-hole H for hand holding formed in the upper central portion of the short side wall 3. When the folded container is lifted, the bottom portion 1 and the long side wall 2 slightly move down with respect to the short side wall 3 due to the weight of the stored articles. This downward movement is caused by a gap existing between the female part and the male part of the hinge connecting the bottom part 1 and the short side wall 3. Due to the downward movement of the bottom portion 1 and the long side wall 2, the top portion 2e 'of the upper fitting hole 2e formed in the engagement frame portion 2' of the long side wall 2.
Or the projection 3e 'of the upper fitting block 3e formed on the engaging frame 3' of the short side wall 3, which is located slightly lower than the top 2e ', As shown in FIG. 8, the locking projection 3e 'of the upper fitting block 3e is located relatively higher than the top portion 2e' of the upper fitting hole 2e. The upper side corner 2i of the engagement frame 2 'of the upper side wall 2 located above will be locked to the upper corner 2i, so that it is ensured that the short side wall 3 falls down inside the assembled folding container. Can be prevented.
In particular, since the upper fitting block 3e is formed in a block shape and is not easily deformed or bent by an external force, the locking projection 3 of the upper fitting block 3e is formed.
e ′ and an upper corner 2i of the engagement frame 2 ′ of the long side wall 2 described above.
Is not released. As described above, when the folding container is assembled, the upper surface 3g 'of the lower fitting block 3g formed on the engagement frame 3' of the short side wall 3 and the engagement frame of the long side wall 2 are formed. Since a predetermined gap is formed between the lower fitting hole 2g formed in the portion 2 'and the top portion 2g', the lower fitting hole 2g is formed.
Does not prevent the lower side wall 1 from moving upward relative to the bottom 1 and the long side wall 2. The intermediate fitting plate-like member 3f formed in the engaging frame 3 'of the short side wall 3 inserted into the intermediate fitting hole 2f formed in the engaging frame 2' of the long side wall 2 has its elasticity. Accordingly, the intermediate fitting plate-like member 3f does not similarly prevent the upward movement of the short side wall 1 relative to the bottom portion 1 and the long side wall 2.

When the assembled folding container is to be folded, the short side wall 3 of the assembled folding container is pushed slightly downward, so that the engagement frame portion 3 'of the short side wall 3 as described above. The upper end 3e ″ of the locking projection 3e ′ of the upper fitting block 3e formed at the same height as the top portion 2e ′ forming the upper fitting hole 2e, or
The upper fitting block 3e is located at a position slightly lower than the top part 2e ', and the upper corner of the engaging frame 2' of the long side wall 2 located above the upper fitting hole 2e. 2i, the short side wall 3 can be easily removed from the bottom 1
Can be folded in the direction. Also, an intermediate fitting plate-like member 3f formed on the engagement frame 3 'of the short side wall 3.
Has elasticity, so that the locking projections 3 of the fitting plate-shaped member 3f
f ′ easily disengages from the upper corner 2h of the engagement frame 2 ′ of the long side wall 2 located above the intermediate fitting hole 2f, so that the rotation of the short side wall 3 in the direction of the bottom 1 can be prevented. There is no such thing as being blocked by the locking projection 3f 'of the plywood-like member 3f.

[0025]

Since the present invention has the above-described structure, the following effects can be obtained.

At the time of assembling the folding container, after the fitting block formed on the engaging frame portion on one side wall is inserted into the fitting hole formed on the engaging frame portion on the other side wall, When the fitting block moves upward relative to the fitting hole, the locking projection formed on the fitting block is moved to a predetermined corner formed on the engagement frame. Since it is configured to be locked, it is possible to easily engage with the engagement frame portion provided on one side wall and the engagement frame portion provided on the other side wall, At the time of the carrying operation by the worker of the folding container, the engagement state between the engagement frame portions is not released. In addition, the workability of assembling and folding the folding container is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an assembled state of a folding container according to the present invention.

FIG. 2 is a perspective view of the folding container according to the present invention in the middle of assembly.

FIG. 3 is a perspective view of the folding container according to the present invention in a folded state.

FIG. 4 is a partial perspective view of a long side wall and a bottom of the folding container according to the present invention.

FIG. 5 is a partial perspective view of a short side wall and a bottom of the folding container according to the present invention.

FIG. 6 is a partial vertical sectional view taken along a long side wall of the folding container according to the present invention during assembly.

FIG. 7 is a partial vertical sectional view along a long side wall in a state where the folding container of the present invention is assembled.

FIG. 8 is a partial vertical sectional view along a long side wall in a state where the folding container of the present invention is assembled.

[Explanation of symbols]

 1 bottom 2 long side wall 2 'engagement frame 2e ........... Upper fitting hole 3 ... Short side wall 3 '... Engagement frame 3e ... ..... Upper mating block

Claims (1)

[Claims] 1. A folding container wherein a side wall disposed so as to surround a bottom portion is folded so as to overlap with the bottom portion. After the fitting block is inserted into the fitting hole formed in the engaging frame portion of the other side wall, the fitting block moves upward relative to the fitting hole, A folding container wherein a locking projection formed on the fitting block is locked to a predetermined corner formed on the engagement frame portion.