JP2003011975A - Stacking structure of foldable container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a small sized foldable container to be mounted easily and positively together with a large sized foldable container after the large sized foldable container is assembled into a box shape. SOLUTION: Outer circumferential suspending pieces 20a and inner circumferential protrusions 21a are arranged at an outer circumference of a lower surface of a small bottom plate 1a. An upper end surface of a side plate at a long side of a large sized foldable container 3A is provided with a notch 23A. A plurality of small sized foldable containers 3a are mounted on the large sized foldable container 3A assembled into a box shape by raising four side plates. Fitting groove segments 22a between each of the outer circumferential suspension pieces 20a and the inner circumferential protrusions 21a arranged at the lower surface of a small bottom plate 1a are fitted to an upper end of the side plate of the large sized foldable container 3A kept in its raised state. A corner segment of each of the outer circumferential suspension pieces 20a of a small bottom plate 1a of the adjoining small sized foldable container 3a is fitted to the notch 23A at the upper end of the side plate of the long side of the large sized foldable container 3A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container loading structure for loading a large folding container and a small folding container.

[0002]

2. Description of the Related Art Conventionally, a pair of first side plates rotatably attached to a pair of opposite sides of a rectangular bottom plate and a pair of rotatably attached to another pair of opposite sides. The second side plate is folded with the pair of first side plates folded down and the pair of second side plates is folded down, and the pair of second side plates is erected and then the pair of first side plates is erected. There is known a folding container that is assembled in a box shape. When the folding containers are stored or transported in an empty state, a plurality of the folding containers are folded and the bulkiness thereof is reduced, and the folding containers are stacked and stored or transported.

By the way, there are a plurality of kinds of folding containers having different bottom plates, and those having different bottom plates are assembled and stored in a box shape, transported, or folded and stored. When transporting or transporting, folding containers with the same size of the bottom plate are stacked and stacked or stored or transported in the assembled state. Therefore, it is necessary to sort the folding containers having different sizes of the bottom plate and stack them separately on top of each other, which raises a problem of high distribution cost.

Therefore, in the process leading to the present invention, one side of the small bottom plate of the small folding container is made to have the same length or substantially the same length as the short side of the large bottom plate of the large folding container, and the other side of the small bottom plate is made large. By setting 1 / N or substantially 1 / N of the long side of the bottom plate (where N is an integer of 2 or more), one side of the small bottom plate having the same length or substantially the same length as the short side of the large bottom plate Place the bottom plates of multiple small folding containers adjacent to each other on the large folding container assembled in a box shape so that it is positioned parallel to the short side of the large bottom plate, or It was considered to place the bottom plates of a plurality of small folding containers adjacent to each other on the folding container.

Then, as shown in FIG. 25, a plurality of small displacement preventing projections 30 projecting upward are provided on the upper surface of the side plate 2A on the long side of the large foldable container 3A so that the small foldable container 3a is small. At the end of the bottom plate 1a, when a plurality of small foldable containers 3a are placed side by side on a large foldable container 3A in an assembled state, a fitting recess 31 for fitting in the small protrusion 30 for preventing slippage is formed, As a result, a plurality of small folding containers 3a are formed on the large folding container 3A assembled in a box shape.
I thought about placing it so that it would not shift.

However, a small folding container 3a is mounted on a large folding container 3A assembled in a box shape.
26, the both ends of the small bottom plate 1a of the small folding container 3a are placed on the longitudinal ends of the upper surfaces of the side plates 2A on the long sides of the large folding container 3A as shown in FIG. In this state, the small foldable container 3a is slanted a little while being slid and placed as shown by the arrow in FIG. 26. At this time, the both ends of the small bottom plate 1a of the small foldable container 3a are large. There is a problem that the small protrusion 30 for preventing displacement provided on the upper end surface of the side plate 2A on the long side of the folding container 3A hits the deviation preventing small protrusion 30 and the slide cannot be smoothly slid and placed.

Moreover, a plurality of small folding containers 3
When placing a on the large foldable container 3A assembled in the shape of a box, if one small foldable container 3a is placed first, the small foldable container 3a placed first will be a small protrusion for preventing dislocation. Recessed part 31 fitted in 30
Is positioned in the direction parallel to the side plate on the short side of the large foldable container 3A by being fitted,
There is a problem that the large folding container 3A is not positioned in a direction parallel to the side plate 2A on the long side,
Therefore, there is a problem in that when the small folding container 3a to be placed later is placed on the large folding container 3A, it cannot be placed accurately.

Further, conventionally, when it is attempted to place a small folded container in a folded state on a large folded container in a folded state, the small folded container is placed on a side plate in a folded state on the large folded container. Since it was placed, the placement was unstable and it could not be stacked high up and down, and the side plates were easily damaged, and for these reasons it was not possible to stack folding containers with different bottom plate sizes up and down. .

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and allows a large folding container and a small folding container having different sizes of bottom plates to be stably mixed and mounted. A large foldable container can be assembled in a box shape, and a small foldable container can be mixed easily and securely, and a large foldable container with a different bottom plate size and a small foldable container can be mixed together so that the side plates are not damaged. It is another object of the present invention to provide a stacking structure for a folding container that can be stored by making full use of the internal capacity in a box-shaped assembled state.

[0010]

In order to achieve the above object, the stacking structure for a folding container according to the present invention has a long-side side plate 2A rotatably attached to opposite long sides of a rectangular large bottom plate 1A. And the side plate 2B on the short side, which is rotatably attached to each of the opposite short sides, of either the pair of side plates 2A on the long side or the pair of side plates 2B on the short side. After that, a large folding container 3A that is folded on the other side with the other side folded down and the other side is erected and then one side is erected to form a box-shaped foldable container 3A is formed. The pair of first side plates 2a rotatably attached to the sides, and the pair of second side plates 2b rotatably attached to the other pair of opposing sides The pair of second side plates 2b on the top
The small folding container 3a is formed by folding and folding the pair of second side plates 2b and then raising the pair of first side plates 2a to assemble them in a box shape. One side of the bottom plate 1a has the same length or substantially the same length as the short side of the large bottom plate 1A of the large folding container 3A, and the other side of the small bottom plate 1a has the large side plate 1a.
1 / N or approximately 1 / N of the long side of A (where N is an integer of 2 or more), and an outer peripheral hanging piece 20a is provided along the outer periphery of the lower surface of the small bottom plate 1a, and from the outer periphery of the lower surface of the small bottom plate 1a. An inner circumferential protrusion 21a is provided at a position slightly retracted inward, and a recess 23A is provided at a position 1 / N or about 1 / N in the longitudinal direction of the upper end surface of the side plate on the long side of the large folding container 3A. Assemble in a box shape by standing the four side plates in a state where one side of the small bottom plate 1a having the same length or substantially the same length as the short side of the large bottom plate 1A is positioned parallel to the short side of the large bottom plate 1A. A plurality of small folding containers 3a are placed on the large folding container 3A, and the fitting groove portion 22a between the outer peripheral hanging piece 20a and the inner peripheral protruding portion 21a provided on the lower surface of the small bottom plate 1a is in the upright state. Large folding container 3A
Of the small bottom container 1a of the small folding container 3a adjacent to the recess 23A at the upper end of the side plate on the long side of the large folding container 3A. It is characterized by being fitted adjacently.

With such a structure, a plurality of small folding containers 3a can be placed on the large folding container 3A assembled in a box shape for mixed loading. Moreover, a large folding container 3 assembled in a box shape
When placing a plurality of small foldable containers 3a on A, by placing both ends of the bottom of the small foldable container 3a on the upper end surface of the side plate 2A on the long side of the large foldable container 3A. An outer peripheral hanging piece 20a that can be placed smoothly and is provided on the lower surface of the small bottom plate 1a
The fitting groove portion 22a between the inner peripheral protruding portion 21a and the inner peripheral protruding portion 21a is fitted into the upper end portion of the side plate of the large folding container 3A in the upright state, and at the recess 23A of the upper side portion of the side plate on the long side of the large folding container 3A. By fitting the corner portions of the outer peripheral hanging pieces 20a of the small bottom plates 1a of the adjacent small foldable containers 3a adjacently, the small foldable container 3a is parallel to the long side of the large foldable container 3A and is short. It can be positioned so as not to be displaced in any direction parallel to the side, whereby a plurality of small folding containers 3a are laterally adjacent to each other on the large folding container 3A assembled in a box shape. It can be positioned and placed so that it does not shift accurately when it is placed. In addition, since the large foldable container 3A does not have a mouth frame, it is necessary to hold the shape stably in a box-shaped assembled state. However, as described above, the outer peripheral hanging piece 20a provided on the lower surface of the small bottom plate 1a and the inner hanging piece 20a Since the inner and outer fittings are such that the peripheral projecting portion 21a is fitted into the upper and lower ends of the side plates of the large foldable container 3A in the upright state, the assembled state of the large foldable container 3A without the mouth frame is further stabilized.

Further, supporting projections 4A project upward from at least the four corners of the large bottom plate 1A of the large foldable container 3A and both ends of the long sides thereof, and a plurality of foldable large foldable containers 3A are provided on the upper surface thereof. Of the small foldable containers 3a, and at the same time, to mount and support the small foldable containers 1a of the plurality of small foldable containers 3a on the support projections 4A projecting between at least the four corners of the large bottom plate 1A and the ends of the long sides. Is preferred. With such a configuration, a plurality of small folding containers 3a are stacked on the folded large folding container 3A, and the four corners of the small bottom plates 1a of the plurality of small folding containers 3a are respectively folded into a large folding container. It can be supported by the support protrusion 4A, and can be stably supported for mixed mounting.

Also, the inner surfaces of the side plates of the large foldable container 3A are vertical to the large bottom plate 1A in the upright state, and the inner surfaces of the side plates of the small foldable container 3a are upright and perpendicular to the small bottom plate 1a. Is preferred. That is, in the container in which the bottom plate and the side plate are integrated, the side plate is provided with an inclination in order to remove the mold from the mold, so that the internal volume in the container cannot be fully utilized. By making each side plate perpendicular to the bottom plate in the upright state, it is possible to fully utilize the internal capacity in the box-shaped assembled state and to store it.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

The large foldable container 3A used in the present invention is as shown in FIGS. 14 to 19, and the side plates 2A on the long side can be freely rotated on the opposite long sides of the rectangular large bottom plate 1A. After the side plates 2B on the short sides are rotatably attached to the opposite short sides, and either one of the pair of side plates 2A on the long side or the pair of side plates 2B on the short side is laid down first, It is configured to be folded in a state in which the other side is laid down thereon, and the other side is erected, and then one side is erected to be assembled into a box shape. In the embodiment shown in the accompanying drawings, the pair of side plates 2A on the long side is laid down, and then the pair of side plates 2B on the short side is laid on it to fold up, and the pair of side plates 2B on the short side is erected and then long A pair of side plates 2A on the side
It is designed to be assembled into a box by standing up. Of course, the pair of side plates 2B on the short side is laid down, and then the pair of side plates 2A on the long side is laid on it to fold,
Alternatively, the pair of side plates 2A on the long side may be erected and then the pair of side plates 2B on the short side may be erected to assemble them in a box shape.

Between the four corners of the rectangular large bottom plate 1A and the ends of the long sides, support projections 4A are provided so as to project upward. In the embodiment shown in the accompanying drawings, an example in which two small foldable containers 3a are mounted on a large foldable container 3A is shown. In this case, therefore, between the long sides of the rectangular large bottom plate 1A. The support protrusion 4A is provided at a position that divides into two equal parts, and when three small folding containers 3a are mounted on the large folding container 3A, both ends of the long side of the rectangular large bottom plate 1A are The support protrusions 4A are provided at positions that divide the space into three equal parts. Similarly, place a small folding container 3a on top of the large folding container 3A.
In the case of two mountings, the supporting projections 4A are provided at positions where the ends of the long sides of the rectangular large bottom plate 1A are equally divided into four.

As shown in FIG. 14, the upper end of the supporting projection 4A projects above the upper side plate (the side plate 2B on the short side in FIG. 14) in a folded state of the large folding container 3A. The large bottom plate 1 of the support protrusions 4A
The support projections 4A ₁ located at the four corners of A are provided with fitting projections 6A _{1 which} are L-shaped in plan view and which are provided at substantially intermediate portions of the upper end surface portion in the inner and outer directions. The support projections 4A ₂ projecting from the long sides of the large bottom plate 1A of the supporting projection 4A is Yes forms the fitting projections 6A ₂ on each side upper portion, both fitting projections 6
There is a gap 6A ₃ between A ₂ .

As shown in FIG. 19, a rectangular large bottom plate 1A
An annular outer peripheral hanging piece 20A is provided along the entire outer periphery of the lower surface, and an inner peripheral projecting portion 21A is provided at a position retracted slightly inward from the outer periphery of the lower surface of the large bottom plate 1A. A portion surrounded by the piece 20A and the inner peripheral protruding portion 21A is an annular fitting groove portion 22A extending over the entire outer periphery of the large bottom plate 1A. Here, in the embodiment shown in the accompanying drawings, a protruding bottom portion 13A in which a portion surrounded by the fitting groove portion 22A on the lower surface of the large bottom plate 1A projects downward
The peripheral portion of the protruding bottom portion 13A constitutes the inner peripheral protruding portion 21A.

An intermediate groove portion 11 is formed in parallel with the short side between both opposing short sides of the lower surface of the large bottom plate 1A (in the embodiment shown in the accompanying drawings, one intermediate groove portion 1 is provided at an intermediate portion of both short sides.
1 is formed), the intermediate groove portion 11 is a fitting groove portion 2
2A, and the width of the intermediate groove portion 11 is twice the width of the fitting groove portion 22A. The protruding bottom portion 13A is divided into a plurality of pieces in the longitudinal direction by the intermediate groove portion 11, and each of the four corners of the divided protruding bottom portion 13A constitutes a mounting portion 5A.

When the large foldable containers 3A in the folded state are vertically stacked, the four large foldable containers 3A in the lower stage are provided on the upper surface of the support projection 4A so as to face upward at the four corners and the long sides. The fitting protrusions 6A ₁ and 6A ₂ are fitted with annular fitting groove portions 22A formed on the outer periphery of the lower surface of the upper foldable container 3A, respectively, to prevent lateral displacement, and the large foldable container at the lower tier. Four corners of the protruding bottom portion 13A divided into a plurality of large bottom plates 1A of the large foldable container 3A in the upper stage at four corners of the 3A and upwardly located on the long sides, inside the upper surface of the support protrusion 4A. Each of the mounting portions 5A is placed to support the load.

In a state in which a pair of long-side side plates 2A and a pair of short-side side plates 2B of a large foldable container 3A are erected and assembled in a box shape, end portions of adjacent long-side side plates 2A. The end of the side plate 2B on the short side is detachably connected by an arbitrary joining means so that the box-shaped assembled state can be maintained. In addition, ridges 7A, 7B are provided so as to be upwardly offset toward the inner surface of the upper surface portion along the entire length of the upper surface portion of the side plate 2A on the long side and substantially the entire length of the upper surface portion of the side plate 2B on the short side. There is. Side plate 2 on the short side
Both ends of the protrusion 7B provided on the upper surface of B are L-shaped in a plan view. Then, in a standing state, both ends of the protrusion 7A provided on the upper end surface of the side plate 2A on the long side hit the L-shaped tip end of the protrusion 7B provided on the upper end surface of the side plate 2B on the short side. The ridges 7A and 7B are in contact with each other and are continuous in an L shape at a corner portion of the box-shaped large foldable container 3A in plan view.

Further, the longitudinal direction is 1 / N or approximately 1 / N (where N is an integer of 2 or more) at the upper end of the side plate 2A on the long side.
At the position where the ridge 7A is cut out, a recess 23A is provided (here, when two small foldable containers 3a are mounted on the large foldable container 3A, the N is 2 or 3). N will be 3 ...

When the large foldable containers 3A are stacked vertically in a box-like assembled state, the upper foldable container 3A is placed in the upper opening of the lower foldable container 3A. In this case, the annular fitting groove portion 22A formed on the outer peripheral portion of the large bottom plate 1A of the large folding container 3A in the upper stage is fitted so as not to laterally shift.

The small foldable container 3a is as shown in FIGS. 20 to 24. A pair of first side plates 2a are rotatably attached to a pair of opposite sides of a rectangular small bottom plate 1a, respectively. A pair of second side plates 2b is rotatably attached to the other pair of opposing sides, and the pair of first side plates 2a is folded and then the pair of second side plates 2b is folded and folded. After erecting the second side plate 2b, a pair of first
The side plate 2a is erected and assembled in a box shape. In a state in which the pair of first side plates 2a and the pair of second side plates 2b of the small foldable container 3a are erected and assembled in a box shape, the ends of the adjacent first side plates 2a and the second side plates 2a
The end of the side plate 2b is detachably connected by an arbitrary joining means so that the box-shaped assembled state can be maintained.

Here, the small folding container 3a is used.
The small bottom plate 1a has one side having the same length or substantially the same length as the short side of the large large bottom plate 1A, and the other side of the small bottom plate 1a has 1 / N or 1 / N of the long side of the large bottom plate 1A. (Here, N is an integer of 2 or more). The embodiment shown in the accompanying drawings is an example in which the rectangular small bottom plate 1a has a rectangular shape, and the long side of the small bottom plate 1a and the short side of the large bottom plate 1A have the same length or substantially the same length. In addition, the short side of the small bottom plate 1a is 1/2 of the large bottom plate 1A (that is, N is 2), the first side plate 2a is the long side side plate, and the second side plate 2b is the short side side. In the example shown in FIG. of course,
The rectangular small bottom plate 1a may be square, and the short side of the rectangular small bottom plate 1a is 1 of the large bottom plate 1A.
It may be / 3, 1/4, ...

Supporting projections 4A project upward from the four corners of the small bottom plate 1a, and the upper ends of the supporting projections 4A are higher than the side plates that are the upper stage when the small folding container 3a is folded. Located on top. Support protrusion 4a
The inner and outer direction substantially intermediate portion of the upper end face of the fitting protrusions 6a ₁ in which the plan view L-shape are projected.

Further, as shown in FIG. 24, an annular outer peripheral hanging piece 20a is provided on the lower surface portion of the rectangular small bottom plate 1a along the entire outer periphery of the lower surface, and slightly inside the outer periphery of the lower surface of the small bottom plate 1a. An inner peripheral protruding portion 21a is provided at the retracted position, and a portion surrounded by the outer peripheral hanging piece 20a and the inner peripheral protruding portion 21a is an annular fitting groove portion 22a extending over the entire outer periphery of the small bottom plate 1a. . Here, in the embodiment shown in the accompanying drawings, a portion of the lower surface of the small bottom plate 1a surrounded by the fitting groove portion 22a is a protruding bottom portion 13a protruding downward, and a peripheral portion of the protruding bottom portion 13a is the inner peripheral protruding portion. 21a. When the small folding containers 3a in the folded state in which the four corners of the projecting bottom portion 13a constitute the placing portion 5a are vertically stacked, the supporting protrusions provided at the four corners of the small folding container 3a in the lower stage are stacked. the fitting protrusions 6a ₁ projecting from the upper surface parts 4A is fitted is fitted groove 22a of the bottom outer periphery of the small bottom plate 1a of the upper small folding container 3a to prevent lateral displacement,
Further, the mounting portions 5a at four corners of the bottom surface of the small bottom plate 1a of the small folding container 3a in the upper stage are mounted on the upper surface of the support protrusion 4A to support the load.

In a state in which a pair of long-side side plates 2a and a pair of short-side side plates 2a of a small foldable container 3a are erected and assembled in a box shape, end portions of adjacent long-side side plates 2a are assembled. The end portion of the side plate 2b on the short side is detachably connected by an arbitrary joining means so that the box-shaped assembled state can be maintained. Further, projecting ridges 7a, 7b are provided on the entire length of the upper surface of the side plate 2a on the long side and on the substantially entire length of the upper surface of the side plate 2b on the short side so as to be offset toward the inner surface of the upper surface and directed upward. There is. Side plate 2 on the short side
Both ends of the protrusion 7b provided on the upper surface of b are L-shaped in a plan view. Then, both ends of the protrusion 7a provided on the upper end surface of the side plate 2a on the long side in the upright state contact the L-shaped tip portions of the ends of the protrusion 7b provided on the upper end surface of the side plate 2b on the short side. The ridges 7a and 7b are in contact with each other and are continuous in an L shape at the corner portion of the box-shaped large folding container 3A in plan view.

When the small foldable containers 3a are vertically stacked in a box-like assembled state, the upper foldable small foldable container 3a is placed in the upper opening of the lower foldable small foldable container 3a. In this case, the annular fitting groove 22a formed on the outer peripheral portion of the small bottom plate 1a of the small folding container 3a in the upper stage is fitted so as not to laterally shift.

Using the large-sized folding container 3A and the small-sized folding container 3a having the above-mentioned configurations, the stored items are respectively stored in the large-sized folded container 3A in the assembled state and the small-sized folding container 3a in the assembled state. It is then transported and stored. Then, in the state in which the stored items are not put, the large folding container 3A and the small folding container 3a are folded and transported or stored.

Here, in transporting or storing the large foldable container 3A and the small foldable container 3a in a folded state, in the present invention, as shown in FIGS. Multiple small folding containers 3 on top of a large folding container 3A
A can be placed side by side and stacked. That is, a plurality of small foldable containers 3a are placed on the upper surface of the large foldable container 3A in the folded state, and a plurality of small foldable containers 3 are mounted on at least the four corners of the large bottom plate 1A and the support projections 4A protruding from the long sides. At least four corner portions of the small bottom plate 3a of 3a are mounted and supported. In this case, a large folding container 3
The small folding container 3a is arranged on the short side of A so that one side of the small folding container 3a having the same length or substantially the same length as the short side is parallel to the large folding container 3a.
A plurality of small folding containers 3A and a plurality of small folding containers 3a are housed in the same size so that they can be stacked.

Here, as shown in FIG. 12, annular fitting groove portions 22a formed on the outer peripheral portions of the small bottom plates 1a provided at the four corners of the lower surface of each small bottom plate 1a of the plurality of small folding containers 3a are provided. , The fitting projection 6 of the support projection 4A
Be one that engages the A _1, 6A _2, stacked when placed side by side a plurality of small folding container 3a on the large folding container 3A, so as not shift more compact collapsed container 3a It is made so stable that it can be mixed.

When a plurality of small foldable containers 3a are placed side by side on the large foldable container 3A as described above, adjacent small foldable containers 3a are located at positions where the small foldable containers 3a are adjacent to each other. projecting the supporting protrusion 4A ₂ of the outer peripheral suspended piece 20a is projecting from the long sides of the respective large bottom plate 1A which is located outside of the fitting groove 22a in which the annular formed on the outer periphery of the small bottom plate 1a of the upper end sides By fitting in the gap 6A ₃ between the fitting protrusions 6A ₂ provided, the outer peripheral hanging piece 20a is provided to prevent the lateral displacement when the small folding containers 3a are stacked on the large folding container 3A. though, it is to be able to stack in reliably folded state to discharge downwardly pendant piece 20a in the gap 6A _3.

Further, as described above, since the upper end portion of the support protrusion 4A is configured to project above the upper side plate of the large foldable container 3A in the folded state, the large foldable container 3A is When placing a plurality of small folding containers 3a on top, it is possible to prevent the load of the plurality of small folding containers 3a from being applied to the upper side plate of the large folding container 3A in the folded state. Also, when another load is placed on the large foldable container 3A in the folded state, the side plate is supported by the support projections 4A upward at least at the four corners and the long sides of the large bottom plate 1A. It is possible to prevent the load from being applied, which prevents the side plate in the folded state from being damaged without being applied to the side plate.

As described above, the large folding container 3
A plurality of small foldable containers 3a are stacked side by side on A. In this case, the large foldable containers 3A are stacked in multiple stages, and at the same time, a large number of large sized foldable containers 3A having an arbitrary number of tiers are stacked. A plurality of small folding containers 3a may be placed and stacked on the folding container 3A as described above, and a plurality of small folding containers 3a arranged side by side may be stacked on the folding container 3a. A small folding container 3a may be placed and stacked, or a large folding container 3A may be stacked on top of a plurality of small folding containers 3a.

When a plurality of small foldable containers 3a are placed on top of each other and the large foldable container 3A is placed and stacked, each of the plurality of projecting bottom portions 13A of the large bottom plate 1A of the large foldable container 3A is placed. Placement section 5A at the four corners
Are respectively placed on the supporting projections 4a projecting from the four corners of the small bottom plates 1a of the plurality of small foldable containers 3a to support the load, and further project to the four corners of the small bottom plates 1a of the plurality of small foldable containers 3a. The fitting protrusion 6a ₁ projecting from the provided support projection 4a has a fitting groove 2 on the lower surface of the large bottom plate 1A.
2A and the intermediate groove portion 11 are fitted to each other, so that when the large folding container 3A is placed on the plurality of small folding containers 3a arranged in parallel, the large folding container 3A is stably loaded so as not to shift. Will be done. 9 and 13 show examples of stacking the large foldable container 3A and the plurality of small foldable containers 3a, but of course various other stacking forms other than the above can be adopted.

A plurality of small folding containers 3a assembled in a box shape may be stacked on the large folding container 3A in the folded state. In this case as well, the plurality of small folding containers 3a folded as described above are placed in the same state as being placed and loaded on the large folding container 3A.

Further, a large folding container 3A may be placed on top of a plurality of folded small folding containers 3a arranged in parallel. In this case as well, the large folding container 3A folded as described above is placed in the same state as being placed and loaded on the folded small folding containers 3a.

On the other hand, a large folding container 3A is assembled in a box shape, a small folding container 3a is assembled in a box shape, and a plurality of them are assembled on the large folding container 3A assembled in a box shape as shown in FIGS. The small folding containers 3a can be mixedly mounted as well. In this case, the small foldable containers 3a are arranged such that the sides of the small bottom plate 1a having the same length or substantially the same length as the short sides of the large bottom plate 1A are parallel to the short sides of the large bottom plate 1A. It is placed on a large folding container 3A.

When placing the small folding container 3a on the large folding container 3A assembled in a box shape, for example, as shown in FIG. 5A, the side plate on the long side of the large folding container 3A is used. The small foldable container 3a is slightly attached with both end portions of the small bottom plate 1a of the small foldable container 3a (that is, the corner portions of the outer peripheral hanging piece 20a) placed on the longitudinal ends of the ridges 7A on the upper surface of 2A. In the state of being inclined (inclined so that the side opposite to the side placed on the protrusion 7A is upward), slide along the protrusion 7A as shown by the arrow in FIG. As shown in FIG. 5 (b), with the corner portion falling into the recess 23A provided in the protrusion 7A, the fitting between the outer peripheral hanging piece 20a provided on the lower surface of the small bottom plate 1a and the inner peripheral projecting portion 21a. Groove 22a is large Ridge provided in a range in the longitudinal direction of 1 / N of the upper end surface of the side plate 2A on the long side of the Ritatami container 3A 7
A and a ridge 7B provided on the upper end surface of the side plate 2B on one short side
It fits into. As a result, one of the small foldable containers 3a is positioned above the large foldable container 3A so as not to laterally shift in the long side direction and the short side direction of the large foldable container 3A, and the predetermined position of the large foldable container 3A. Installed in the above case, and in this case, a small folding container 3a and a large folding container 3A are further added.
Large folding container 3 due to the above fitting with each other
The opening of A is prevented from widening or narrowing so that the small folding container 3a does not fall into the large folding container 3A.

Similarly, as shown in FIG. 5 (c), another small folding container 3a is provided on the lower surface of the small bottom plate 1a, and the corner portion of the outer peripheral hanging piece 20a is formed into a large folding container 3.
5A is placed on the ridge 7A of A and slid as shown by an arrow in FIG. 5C, and when the corner portion of the outer peripheral hanging piece 20a has fallen into the recess 23A, as shown in FIG. Bottom plate 1a
The large-sized folding container 3 is provided with a fitting groove portion 22a between the outer peripheral hanging piece 20a and the inner peripheral protruding portion 21a provided on the lower surface of the container.
It is fitted into another ridge 7A provided in the range of 1 / N in the longitudinal direction of the upper end surface of the side plate 2A on the long side of A and the ridge 7B provided on the upper end surface of the other side plate 2B on the short side. .

Here, each recess 20a on the outer periphery of the small bottom plate 1a of the small folding container 3a adjacent to the recess 23A.
The corner portions of are respectively fitted adjacent to each other.

A plurality of small folding containers 3a are provided on the large folding container 3A assembled in a box shape.
When mounting the slide by placing it, see Fig. 6 (a).
The steps may be performed in the order shown in (b), (c) and (d).

Further, in the mixed loading in the box-shaped assembled state, the projecting bottom portion 13a of the bottom of each small foldable container 3a is fitted into the upper opening of the large foldable container 3A, so that the large foldable container 3a is folded. The side plate 2A on the long side and the side plate 2B on the short side of 3A are prevented from falling inward, respectively, and the plurality of small foldable containers 3a are prevented from shifting further.

Here, the large folding container 3A may be placed on the plurality of small folding containers 3a arranged side by side assembled in a box shape. In this case, the large folding container 3 is attached to the ridges 7a and 7b provided on the upper end surfaces of the side plates 2a and 2b of the plurality of small folding containers 3a arranged side by side.
The large bottom plate 1A of A is fitted into the fitting groove portion 22A and the intermediate groove portion 11 of the lower surface portion (the ridges 7b of the adjacent folding containers 3a are fitted into the intermediate groove portion 11) to prevent the large folding container 3A from being displaced. There is.

By the way, the inner surface of each side plate of the large foldable container 3A is vertical to the large bottom plate 1A in an upright state, and the inner surface of each side plate of the small foldable container 3a is upright to be vertical to the small bottom plate 1a. Has become. However, in a container in which the bottom plate and the side plate are integrated, the side plate is provided with an inclination for die-cutting and the internal capacity in the container cannot be fully utilized. By making it perpendicular to the bottom plate in the upright state, it is possible to fully utilize the internal capacity in the box-shaped assembled state and store it.

[0047]

As described above, according to the first aspect of the present invention, one side of the small bottom plate of the small foldable container has the same length or approximately the same length as the short side of the large bottom plate of the large foldable container. While having the same length, the other side of the small bottom plate is 1 / N or approximately 1 / N of the long side of the large bottom plate (where N is an integer of 2 or more) and has the same length as the short side of the large bottom plate of the small bottom plate or Place multiple small folding containers on top of a large folding container assembled in a box shape with the four side plates standing upright with one side of approximately the same length positioned parallel to the short side of the large bottom plate. Since it is placed, multiple small folding containers can be side-by-side mixedly transported and stored on a large folding container assembled in a box shape, which simplifies distribution. Provide an outer peripheral hanging piece along the outer periphery of the bottom surface of the bottom plate. The inner peripheral protruding portions provided both in a position retracted slightly inward from the outer periphery of the lower surface of the small bottom plate, the large folding container in the longitudinal direction of the upper end face of the side plate of the long side 1
/ N or approximately 1 / N, and a recess is provided at the bottom of the small bottom plate, and a fitting groove between the outer peripheral hanging piece and the inner peripheral protrusion is provided at the upper end of the side plate of the large folding container in the upright state. As it is fitted, the corners of the outer peripheral hanging pieces of the small bottom plate of the small folding container, which is adjacent to the recess at the upper end of the side plate on the long side of the large folding container, are fitted adjacent to each other, so it is assembled in a box shape. When loading multiple small foldable containers on a large foldable container, a plurality of small protrusions for preventing slippage, which hinders sliding as in the past, are placed on the upper end surface of the side plate on the long side of the large foldable container. Since it is not provided, both ends of the bottom of the small foldable container can be slid and placed smoothly on the upper side of the side plate on the long side of the large foldable container. Fit the fitting groove between the provided outer peripheral hanging piece and the inner peripheral protrusion into the upper end of the side plate of the large folding container in the upright state, and in the recess of the upper end of the side plate on the long side of the large folding container. By inserting the corners of the outer peripheral hanging pieces of the small bottom plates of the adjacent small folding containers so that they are adjacent to each other, the small folding container is parallel to the long side and the short side of the large folding container. It can be positioned so as not to shift in any direction. Therefore, it is possible to position and place multiple small foldable containers on the large foldable container assembled in a box shape so that they do not shift accurately when placed next to each other sideways, and even after the mixed loading, the long side Also, it can be prevented from shifting toward the short side.

In addition to the effect of the invention described in claim 1, in the invention described in claim 2, the large bottom plate of the large foldable container is directed upward between at least four corners and both ends of the long sides. And a plurality of small folding containers are placed on the upper surface of the large folding container in the folded state, and at the same time, at least the four corners of the large bottom plate and the supporting projections protruding between both ends of the long side are provided. Since the small bottom plates of multiple small foldable containers are placed and supported, the multiple small foldable containers are stacked on top of the folded large foldable container and the four corners of the small bottom plates of each of the multiple small foldable containers are stacked. Each can be supported by the support protrusion of a large foldable container and can be stably supported for mixed loading. A large foldable container and a small foldable container can be supported. Conveying folding the Na respectively, during the storage, transport and mixed the two, in which can be simplified flow and be stored.

In addition to the effect of the invention according to claim 1 or claim 2, the invention according to claim 3 has the inner surface of each side plate of the large foldable container upright with respect to the large bottom plate. Since the inner surface of each side plate of the small folding container is upright and is perpendicular to the small bottom plate in the upright state, the side plates are assembled in a box shape as compared with the side plates inclined with respect to the bottom plate in the upright state. It can be stored by making full use of its internal capacity.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a large folding container and a small folding container according to the present invention are assembled in a box shape and mixedly mounted.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a front view of the above.

FIG. 4 is a partially cutaway sectional view of the above.

5 (a), (b), (c) and (d) are explanatory views showing the order of placing a plurality of small folding containers on a large folding container assembled in the same box shape. .

6 (a), (b), (c) and (d) are explanations of another example showing the order of placing a plurality of small folding containers on a large folding container assembled in the same box shape. It is a figure.

FIG. 7 is a perspective view showing a state in which a large folding container and a small folding container of the present invention are folded and mixedly mounted.

FIG. 8 is an exploded perspective view of the above.

FIG. 9 is a front view of the above.

FIG. 10 is a side view of the above.

FIG. 11 is a cross-sectional view of a loading portion in which the large folding container and the small folding container of the same are folded and stacked.

12A is an enlarged cross-sectional view of the left end portion of FIG. 5, and FIG. 12B is an enlarged cross-sectional view of the central portion of FIG.

FIG. 13 is a front view showing another example in which the large-sized folding container and the small-sized folding container are folded and mixedly mounted.

FIG. 14 is a perspective view of a large folding container used in the above in a folded state.

FIG. 15 is a plan view of a large folding container used in the above in a folded state.

FIG. 16 is a front view of a large folding container used in the above in a folded state.

FIG. 17 is a perspective view of a large foldable container used in the same as above assembled in a box shape.

FIG. 18 is a front view of a large foldable container used in the above, which is assembled in a box shape.

FIG. 19 is a bottom view of a large folding container used in the above.

FIG. 20 is a perspective view of a small folding container used in the above in a folded state.

FIG. 21 is a front view of the small folding container used in the above in a folded state.

FIG. 22 is a perspective view of a small folding container used in the above, which is assembled in a box shape.

FIG. 23 is a front view of a small folding container used in the above, which is assembled in a box shape.

FIG. 24 is a bottom view of a small folding container used in the above.

FIG. 25 shows a state in which a projection for preventing displacement is provided on a side plate on the long side of a large foldable container, which is considered in the process of reaching the present invention, and a small recessed bottom plate of the small foldable container is fitted with a recess. FIG.

FIG. 26 is an explanatory diagram showing the above problems.

[Explanation of symbols]

1A large bottom plate 1a Small bottom plate 2A Side plate on the long side 2B Short side plate 2a One side plate 2b The other side plate 3A Large folding container 3a Small folding container 4A support protrusion 4a Support protrusion 20a Peripheral hanging piece 21a Inner circumference protrusion 22a Fitting groove 23A recess

Claims (3)

[Claims] 1. A long-side side plate rotatably attached to opposite long sides of a rectangular large bottom plate and a short-side side plate rotatably attached to opposite short sides, respectively. Either one of the pair of side plates on the long side or the pair of side plates on the short side is first laid down first, and then the other side is folded on top of it and the other side is erected, and then one side is erected. Form a large folding container to be assembled in a box-like shape, and rotate a pair of first side plates rotatably attached to a pair of opposite sides of a rectangular small bottom plate and a pair of opposite sides. The pair of freely attached second side plates is folded with the pair of first side plates folded down and the pair of second side plates is folded down, and the pair of second side plates is erected and then the pair of second side plates is erected. Form a small folding container to assemble the first side plate upright and box-shaped, One side of the small bottom plate of the mold folding container has the same length or approximately the same length as the short side of the large bottom plate of the large folding container, and the other side of the small bottom plate is 1 / N or 1 / N of the long side of the large bottom plate. N (where N is an integer of 2 or more), an outer peripheral hanging piece is provided along the outer periphery of the lower surface of the small bottom plate, and an inner peripheral protruding portion is provided at a position slightly retracted inward from the outer periphery of the lower surface of the small bottom plate. The small bottom plate having the same or substantially the same length as the short side of the large bottom plate by providing a recess at a position 1 / N or approximately 1 / N in the longitudinal direction of the upper end surface of the side plate on the long side of the folding container. Place a plurality of small folding containers on a large folding container that is assembled in a box shape by standing up the 4 side plates with one side of the small bottom plate parallel to the short side of the large bottom plate. Between the outer peripheral hanging piece and the inner peripheral protrusion provided on the lower surface of the Fit the groove into the upper end of the side plate of the large folding container in the upright state, and attach the outer peripheral hanging pieces of the small bottom plate of the small folding container adjacent to the recess at the upper end of the side plate on the long side of the large folding container. A folding container loading structure, characterized in that corner portions are fitted adjacent to each other. 2. A plurality of small folds are provided on the upper surface of the large foldable container in the folded state by projecting supporting projections upwardly between at least four corners and both ends of the long sides of the large bottom plate of the large foldable container. The small bottom plate of a plurality of small foldable containers is mounted and supported on at least the four corners of the large bottom plate and the support projections projecting between both ends of the long sides of the large bottom plate. Loading structure of the folding container described. 3. The inner surface of each side plate of the large folding container is vertical to the large bottom plate in an upright state, and the inner surface of each side plate of the small folding container is vertical to the small bottom plate in an upright state. The stacking structure for a folding container according to claim 1 or 2, wherein: