JPH11222233A - Built-up container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a built-up container which can be spread when not in use, and when in use, a plurality of containers can be selectively stacked in an upper and lower stages. SOLUTION: Side walls 2, each of which is connected to each side of a bottom wall 1 through a hinge so as to be erected, are erected and adjoining side walls are engaged with each other. Each side wall 2 comprises a lower stage part 6 and an upper stage part 7 connected integrally to the part 6. The upper stage part 7, which constitutes the side walls when the container is assembled, has a size such that the part 7 can fit on the part 6. An inner periphery step 8 is formed by the upper end surface of the part 6 along the connection part between the part 7 and the part 6. Vertical protruding parts 9, 10 are formed on the outer surfaces of the lower stage parts 6a, 6b of the opposed side walls 2a, 2b respectively so that both the parts 9, 10 are spaced apart from the opposite ends of the side walls respectively. Vertical grooves 11, 12 are formed in the inner surfaces of upper stage parts 7a, 7b of the walls 2a, 2b so that the protruding parts of another container having the same constitution as the container can be fitted into the grooves 11, 12 respectively in one direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom wall and a plastic assembling type container in which a side wall can be unfolded by a hinge with respect to the bottom wall and a plurality of containers can be selectively stacked vertically in two stages. Things.

[0002]

2. Description of the Related Art Conventionally, as a container used for storing and transporting articles, an assembling type container having a structure in which a side wall is freely expandable with respect to a bottom wall and assembled at the time of use is disclosed in Japanese Utility Model Application Laid-Open No. 6-42657. Are known. In this type of assembling container, side walls are provided on each side of the bottom wall via hinges so that the side walls can be turned upside down, and the adjacent side walls are engaged to assemble the container.

[0003] Japanese Patent Publication No. 55-26062 discloses that, when containers are stacked in the same direction as the lower container, the lower portion of the upper container can enter the lower container. A container in which a lower end of an upper container is locked to an inner convex portion of the container is described.

[0004]

SUMMARY OF THE INVENTION
In the container described in JP-A-57-57, since the shape of the opening and the bottom is the same, when a plurality of containers are stacked, they cannot enter the upper container.
Therefore, when transporting or storing the container in an assembled state, the container may be unnecessarily bulky.

Further, in the container described in Japanese Patent Publication No. 55-26062, the side wall cannot be developed into a flat plate shape, so that the container may be unnecessarily bulky. Therefore, in either case, the container was inconvenient for transportation and storage.

Accordingly, an object of the present invention is to provide a bottom wall and a side wall that can be unfolded by a hinge with respect to the bottom wall, which is convenient for storage and transportation when not in use, and that a plurality of containers can be selected in two stages in the vertical direction. It is an object of the present invention to provide an assembling container that can be stacked in a specific manner and can be used in a use mode that is not unnecessarily bulky depending on storage conditions.

[0007]

According to a first aspect of the present invention, there is provided an assembling container according to the present invention. A prefabricated container in which adjacent side walls are engaged to form a container, wherein at least one of the opposing side walls comprises a lower step and an upper step integrally provided therewith. The upper part of the upper part has a size such that the lower part can be fitted inside, and the inner peripheral step is formed by the upper end surface of the lower part at the connection between the upper part and the lower part. On the outer surface of the portion, a vertical convex portion is formed, and on the inner surface of the upper step portion of the two side walls on which the convex portion is formed, another container of the same configuration has a convex portion of the lower step portion in one direction. Form a concave groove in the vertical direction where the part can fit And it is characterized in Rukoto.

In the prefabricated container according to the present invention,
On the outer surface of the lower portion of the two side walls, two convex portions are formed so as to face each other at a distance from both outer ends of the side walls, and two concave portions are formed on the inner surface of the upper portion of the two side walls. The grooves can be formed to face each other.

Further, in the assembly type container according to the present invention, the projection at the lower portion of the side wall is formed to be slightly higher than the lower surface of the bottom wall, and the lower end surface of the projection is connected to the connecting portion between the upper portion and the lower portion. Can be used as a support surface for the inner peripheral step.

[0010]

FIG. 1 is an overall perspective view of an assembly type container according to an embodiment of the present invention, FIG. 2 is a perspective view of a part of the container, FIG. Is a plan view of the same, FIG. 5 is a bottom view of the same, FIG. 6 is a perspective view showing a state where two containers are stacked on a lower container, FIG. 7 is a perspective view showing a state where two containers are stacked, and FIG. FIG.
9 is an enlarged sectional view taken along line AA of FIG. 7, and FIG. 9 is an enlarged sectional view taken along line BB of FIG.

As shown in FIGS. 1 to 5, the prefabricated container according to the present invention comprises a bottom wall 1 and a side wall 2 connected to each side of the bottom wall by a hinge 3. 2 is freely deployable, and the side walls 2 adjacent to each other are locked and fixed by one locking piece 4 and another locking recess 5 with a locking hole to form a box-shaped container. It is.

In the assembly type container according to the present invention, the bottom wall 1 and each side wall 2 have a hollow double-wall structure formed by blow molding a hard thermoplastic resin. The hinge 3 connecting the two is formed by compressing and reducing the thickness of the parison during blow molding.

Each side wall 2 is composed of a lower step 6 and an upper step 7 integrally connected thereto. The upper step 7 constituting the side wall 2 in a state where the container is assembled is fitted with the lower step 6 inside. It is formed as large as possible. In addition, an inner peripheral step 8 is formed by the upper end surface of the lower step 6 at a connecting portion between the upper step 7 and the lower step 6. In the above assembly type container,
Lower portion 6a of one side wall 2a and side wall 2 opposed thereto
On the outer surface of the lower portion 6b of b, vertical protrusions 9 and 10 are formed at the same position facing each other over two rows at intervals. The convex portions 9 and 10 are the bottom wall 1.
Is formed to be slightly higher than the lower surface, and a lower end surface thereof forms a support surface 13 for an inner peripheral step 8 of a continuous portion of the upper steps 7a, 7b and the lower steps 6a, 6b.

On the other hand, on the inner surfaces of the upper steps 7a and 7b of the two side walls 2a and 2b on which the above-mentioned protrusions 9 and 10 are formed, another container of the same construction is provided in one direction with the protrusions of the lower steps 6a and 6b. Vertical grooves 11 and 12 in which the parts 9 and 10 can be fitted are formed in two rows at intervals.

As shown in FIGS. 4 and 5, the prefabricated container according to the present invention has a width middle point of each projection 9 and a side wall 2.
a, 2b with the outer ends b2 and respective concave grooves 11
And the distance b1 between the outer ends of the side walls 2a and 2b has a relationship of b2 = b1. In addition, each convex portion 10
A2 = a1 between a distance a2 between the width middle point of the side wall 2 and the outer ends of the side walls 2a and 2b and a distance a1 between the width middle point of each groove 12 and the outer ends of the side walls 2a and 2b. . a1
And b1 are a1 <b1, and a2 and b2 are a2 <b
2. Note that the widths of the concave grooves 11 and 12 are f and d, respectively.
And the widths of the projections 9 and 10 are h and j, respectively, b
2-h / 2> a1 + d / 2, b1-d / 2> a2 + j /
A relationship of 2 is preferred.

The rigid thermoplastic resin constituting the assemblable container is made of high-density polyethylene, polypropylene, engineering plastic, or the like, and has a flexural modulus (JIS K).
7113) has a rigidity of 10,000 kg / cm ² or more.

As shown in FIG. 6 to FIG. 9, the assembling type containers according to the present invention are stacked and used. It is needless to say that only one assembly type container may be used.

In the assembly type container according to the present invention, 2
As shown in FIG. 6, when the upper container B is stacked on the lower container A as shown in FIG. 6, the upper container B stacked on the lower container A is placed on the side wall 2a, Projections 9 and 1 of lower step 6a of 2b
0 is located at the position of the concave grooves 11 and 12 in the upper step 7b of the side wall 2b of the container A below. When the upper container B is arranged in this manner, as shown in FIGS. 4 and 5, the distance b2 between the width midpoint of each projection 9 and the outer ends of the side walls 2a and 2b, and the distance The distance b1 between the width middle point and the outer ends of the side walls 2a and 2b is the same, the distance a2 between the width middle point of each projection 10 and the outer ends of the side walls 2a and 2b, and the distance a2 Width midpoint and side wall 2
Since the distance a1 from the outer ends of a and 2b is also the same,
Even if the bottom wall 1 and the opening have the same shape, they can be fitted. In this state, the width of the upper end surface of the upper portion 7a of the side wall 2a is slightly larger than the widths g and i of the protrusions 9 and 10, so that the upper portion 7b of the lower container A is The lower container A is locked on the lower end surface of the upper portion 7a, and the lower containers A are stacked about half (see FIG. 8).

In the prefabricated container according to the present invention, when the two containers A and B are stacked on the lower container A as shown in FIG. When the container B above the container A and the convex portion 9 are arranged on the upper edge of the side wall 2a of the container B below, as shown in FIGS. A1 between the outer ends of the side walls 2a and 2b, the midpoint of the width of each projection 9 and the side walls 2a and 2b.
The distance b2 between the outer end of the protrusion 2b and the outer end of the side walls 2a and 2b is a1 <b2.
And the distance b1 between the width middle point of each concave groove 11 and the outer end between the side walls 2a and 2b is in a relationship of a2 <b1, especially b
2-h / 2> a1 + d / 2, b1-d / 2> a2 + j /
2, and when stacked in this state, the support surface 13 formed by the lower end surfaces of the convex portions 9 and 10 of the upper container B is formed.
However, since the upper container B is locked to the upper end surfaces of the upper portions 7a and 7b of the lower container A, the upper container B is stacked without falling into the lower container A (see FIG. 9).

As described above, according to the prefabricated container according to the present invention, when not in use, the container can be deployed so as to be substantially flush with the bottom wall. Can be used.

The present invention is not necessarily limited to the illustrated embodiment, but may be variously modified without departing from the technical scope described in each claim.

[0022]

According to the present invention, the bottom wall and the side wall can be unfolded by the hinge with respect to the bottom wall, which is convenient for storage and transportation when not in use, and a plurality of containers can be selected in two stages up and down. It is possible to obtain an assembling container that can be stacked one after another and can be used in a use mode that is not bulky due to storage conditions.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an assembled container according to an embodiment of the present invention.

FIG. 2 is a perspective view of a part of the assembled container according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a developed mode of the assembled container according to the embodiment of the present invention.

FIG. 4 is a plan view of the assembled container according to the embodiment of the present invention.

FIG. 5 is a bottom view of the assembled container according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a state where two containers shown in FIG. 1 are stacked on a lower container.

FIG. 7 is a perspective view showing a state where the two containers shown in FIG. 1 are stacked on a lower container.

FIG. 8 is an enlarged sectional view taken along line AA of FIG. 6;

FIG. 9 is an enlarged sectional view taken along line BB of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom wall 2 Side wall 2a, 2b Opposite side wall 3 Hinge 4 Locking piece 5 Locking recess with hole 6 Lower step 6a, 6b Opposite lower step 7 Upper step 7a, 7b Opposite upper step 8 Inner peripheral step 9, DESCRIPTION OF SYMBOLS 10 Convex part 11, 12 Concave groove 13 Support surface

Claims (3)

[Claims] 1. A prefabricated container having a side wall connected to each side of a bottom wall by a hinge so as to be capable of being turned upside down, and erecting the side wall to engage adjacent side walls to form a container. At least one of the opposing side walls is composed of a lower part and an upper part integrally connected to the lower part, and the upper part constituting the side wall in a state where the container is assembled has a size such that the lower part can be fitted inside. There is an inner peripheral step formed by the upper end surface of the lower part at the connecting part between the upper part and the lower part, and an outer surface of the lower part is formed with a convex part in the vertical direction, and the convex part On the inner surface of the upper part of the two side walls formed with the above, another container of the same configuration is formed with a vertical groove in which the convex part of the lower part can be fitted in one direction. To be assembled containers. 2. An outer surface of a lower step portion of two side walls is formed so as to be opposed to each other at a distance from both outer ends of the side walls, and is formed on an inner surface of an upper step portion of the two side walls. 2. The assembly type container according to claim 1, wherein two concave grooves are formed so as to face each other. 3. The projection of the lower portion of the side wall is formed to be slightly higher than the lower surface of the bottom wall, and the lower end surface of the projection is used as a support surface for the inner peripheral step of the connection between the upper and lower steps. The assembly type container according to claim 1 or 2, wherein: