JP2003137279A - Foldable container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the troubles of a small-sized foldable container such as its removal out of a flange of another large-size foldable container having the small-sized foldable container positioned below it, its inclination or its dropping to be prevented, and further enable the small-sized foldable container to be stacked on the large-sized foldable container under a stable state. SOLUTION: There is provided a foldable container in which a plurality of small-sized foldable containers assembled into a box-like shape can be stacked up on a large-sized foldable container C1 assembled into a box-shape. A flange 2a of the large-sized foldable container is formed with fitting recesses 2b and a bottom segment 10 of the small-sized foldable container is formed with fitting pieces 10d which can be fitted to the fitting recesses.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped assembly, in which one opposing side wall is laid down so as to overlap the bottom, and then the other side wall is laid down. The present invention relates to a folding container which can be folded by folding a side wall to be overlapped on a side wall which has been folded so as to overlap a bottom portion. 2. Description of the Related Art As shown in FIG. 9, a bottom 1 having a substantially rectangular planar shape, a long side wall 2 hinged to an opposite long side 1a of the bottom 1, and a bottom 1 And the short side wall 3 hinged to the opposing short side 1b, the hinge connection position between the bottom 1 and the long side wall 2 is lower than the hinge connection position between the bottom 1 and the short side wall 3. A folding container C1 is known. Then, from the state of being assembled in the box shape shown in FIG. 9, first, FIG.
As shown in FIG. 3, the opposing long side wall 2 is laid down so as to overlap the bottom 1, and then the opposing short side wall 3 is overlapped on the long side wall 2 laid down so as to overlap the bottom 1. As shown in FIG. 11, the folding container C1 can be folded into a compact, low-height state. Conventionally, as shown in FIG. 12, two folding containers C2 smaller than the folding container C1 have been stacked on the folding container C1 assembled in a box shape. Has been done. Hereinafter, for convenience, the above-mentioned folding container C1 is referred to as a large folding container, and the small folding container C2 stacked on the large folding container C1 is referred to as a small folding container. The small folding container C2 also has a bottom 10
A long side wall 20 hinged to the opposite long side portion 10a of the bottom portion 10 and a short side wall 30 hinged to the opposite short side portion 10b of the bottom portion 10. The hinge connection position is configured to be lower than the hinge connection position between the bottom portion 10 and the short side wall 30. And
As in the case of the large-sized folding container C1 described above, first, the opposing long side walls 20 are folded down so as to overlap the bottom 10 from the state of being assembled in a box shape.
A configuration in which the small foldable container C2 can be folded into a low-height compact state by folding the opposing short side wall 30 so as to overlap the long side wall 20 folded down to zero. Have been. The width of the long side 10a of the bottom 10 of the small foldable container C2 is substantially the same as the width of the short side 1b of the bottom 1 of the large foldable container C1. The width of the short side portion 10b of the bottom portion 10 is formed to be approximately half the width of the long side portion 1a of the bottom portion 1 of the large folding container C1. Therefore, as shown in FIG. 12, along the short side walls 3 of the large box-shaped folded container C1 located below, the length of the small box-shaped folded container C2 located above is set. The side wall 20 is arranged, and the short side wall 3 of the small box-shaped folded container C2 positioned above is arranged along the long side wall 2 of the large box-shaped folded container C1 positioned below.
By arranging 0, two small folding containers C2 assembled in a box shape can be stacked on a large folding container C1 assembled in a box shape. [0006] As shown in FIG. 12, two small box-shaped small folding containers C2 are assembled on a box-shaped large folding container C1. When heavy articles are stored in the small folding container C2 positioned above when stacked, that is, when stacked, the large folding container C1 positioned below is reduced by the weight of the small folding container C2.
The central portion of the long side wall 2 bulges outward, and the corner of the small folding container C2 placed on the central portion of the long side wall 2 of the large folding container C1 located below the large folding container C1 located below. There is a problem that the small folding container C2 positioned above is detached from the long side wall 2 and tilts or falls. In the case of the folding containers such as the large folding container C1 and the small folding container C2, only the opposing short side walls 3, 30 are provided with the opening 3 for the handle.
a, 30a are formed, and opposing long side walls 2, 20 are formed.
Does not have a handle opening, so when holding the folding container, the operator needs to hold the handle opening 3.
a, 30a are confirmed, and the openings 3a, 30a
However, there is a problem that the workability of the transport operation of the folding container is poor. It is good if the widths of the long side walls 2 and 20 and the short side walls 3 and 30 are greatly different, and the long side walls 2 and 20 and the short side walls 3 and 30 can be easily recognized. However, when the planar shape of the folding container is square, When there is no large difference between the widths of the long side walls 2 and 20 and the short side walls 3 and 30,
There has been a problem that it has to be confirmed which side the handle openings 3a and 30a are formed each time. An object of the present invention is to solve the problems of the above-mentioned conventional folding container. In order to achieve the above object, the present invention provides a small folding container assembled in a plurality of boxes on a large folding container assembled in a box. In a folding container that can be stacked, a fitting notch is formed in the flange of the large folding container, and a fitting piece that can be fitted in the fitting notch is formed in the bottom of the small folding container. It was formed. Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it departs from the gist of the present invention. In addition, since the large-sized folding container C1 and the small-sized folding container C2 described above have substantially the same configuration as the large-sized folding container and the small-sized folding container in the present invention described below,
About the same component, the same code | symbol is used for the large folding container C1 and the small folding container C2 mentioned above, and the detailed description is abbreviate | omitted. The long side wall 2 and the short side wall 3 of the large folding container C1 are formed with flanges 2a, 3a extending horizontally outward from the upper ends thereof.
The flange 2a formed on the long side wall 2 of the large folding container C1 has a fitting notch 2b extending from the tip of the flange 2a toward the inside of the large folding container C1. In the present embodiment, four fitting notches 2b are formed on each of the flanges 2a formed on the opposing long side walls 2, and the four fitting notches 2b are formed.
b is two pieces near both ends of the long side wall 2 and 2 pieces near the center.
It is formed individually. As shown in FIG. 3, on the back surface of the bottom 10 of the small folding container C2, as is well known,
When stacking the small folding containers C2 assembled in a box shape, or as shown in FIG. 12 described above, assembling in a box shape on the large folding container C1 assembled in a box shape. When stacking the folded small folding containers C2, the small folding container C2 or the large folding container C1 located below is stacked.
A fitting bank 10c that fits into the opening is formed. In the vicinity of both ends of the lower end of the opposite short side portion 10b of the bottom portion 10, a fitting piece 10d extending downward from the lower end is provided.
The fitting pieces 10d are vertically suspended at predetermined intervals, and are configured not to extend downward beyond the lower surface of the fitting bank 10c. The above-mentioned conventional small folding container C
Similarly to the small folding container C2, the width of the long side 10a of the bottom 10 of the small folding container C2 is formed to be substantially the same as the width of the short side 1b of the bottom 1 of the large folding container C1. The width of the short side 10b of the bottom 10 of the C2 is formed to be approximately half the width of the long side 1a of the bottom 1 of the large-sized folding container C1, so that the large-size assembled in a box shape located below. Along the short side wall 3 of the folding container C1, the long side wall 20 assembled in the upper box-shaped small folding container C2 is arranged, and the lower side of the large folding container C1 assembled in the box shape is located below. By arranging the short side wall 30 of the small folding container C2 assembled in a box shape positioned above along the long side wall 2, the large folding assembled in the box shape is achieved. On top of the saw container C1, it is possible to stack a small folding container C2 assembled in two box-shaped. As described above, when stacking the small foldable container C2 on the large foldable container C1 located below, the small foldable container C2 is vertically suspended near both ends of the short side portion 10b of the bottom portion 10 of the small foldable container C2 located above. The fitting piece 10d is formed with a fitting notch 2b near the end of the long side wall 2 formed on the flange 2a of the long side wall 2 of the large folding container C1 located below and a fitting notch formed near the center. It is configured to fit into the notch 2b. As described above, the small folding container C2 is placed on the large folding container C1 located below.
When stacking, the fitting pieces 1 vertically attached to the short side 10b of the bottom 10 of the small folding container C2 located above
0d is configured to fit into the fitting notch 2b formed in the flange 2a of the long side wall 2 of the large folding container C1 located below, so that the weight of the small folding container C2 lowers it. Even if the long side wall 2 of the large foldable container C1 positioned is going to expand outward, it is fitted on the fitting notch 2b formed in the flange 2a of the long side wall 2 of the large foldable container C1. The fitting piece 10d hanging from the short side portion 10b of the bottom portion 10 of the small folding container C2 prevents the large folding container C1 located below from protruding outside the long side wall 2, so that the small folding container C1 is small. Folding container C
2 can be prevented from being dislodged from the long side wall 2 of the large folding container C1 located below, and can be prevented from tilting or falling, and in a stable state, small folding can be performed on the large folding container C1. The containers C2 can be stacked. In the embodiment described above, an example is shown in which two small folding containers C2 are stacked on the large folding container C1, but the short side of the bottom 10 of the small folding container C2 is shown. By stacking three small foldable containers C2 on the large foldable container C1, the width of the small foldable container 10 is set to approximately one third of the width of the long side 1a of the bottom 1 of the large foldable container C1. In addition, by making the width of the short side 10b of the bottom 10 of the small folding container C2 approximately equal to one-fourth of the width of the long side 1a of the bottom 1 of the large folding container C1, a large folding container can be obtained. Four small folding containers C2 can be stacked on C1. In this manner, an appropriate number of small foldable containers C2 can be appropriately stacked on the large foldable container C1. In such a case, it is needless to say that the small folding containers C2 to be stacked are stacked.
An appropriate number of fitting notches 2b are formed in the flange 2a of the long side wall 2 of the large-sized folding container C1 corresponding to the fitting pieces 10d vertically provided on the short side portion 10b of the bottom portion 10 of the container. . In the present invention, only the fitting notch 2b is provided on the flange 2a of the long side wall 2 of the large folding container C1, and the fitting projection is not provided on the flange 2a. When the containers C1 are stacked, they can be stacked without any obstacle. In particular, when the thickness of the long side wall 2 is small in order to reduce the weight of the folding container and the height at the time of folding as much as possible, the width of the flange 2a is naturally narrow. Although it is difficult to protrude the fitting projection or the like, even when the width of the flange 2a is narrow,
Since it is easy to provide the fitting notch 2b, troubles such as the small folding container C2 coming off the long side wall 2 of the large folding container C1 located below and tilting or falling can be prevented by a simple structure. Can be prevented. Next, a handle portion formed on the long side wall 2 and the short side wall 3 of the large folding container C1 will be described with reference to FIGS. A pair of vertical ribs 2c are formed at a predetermined interval substantially at the center of the outer wall surface of the long side wall 2.
In addition, an appropriate number of horizontal ribs 2d are formed above the vertical ribs 2c so as to connect the pair of vertical ribs 2c. On the lower surface of the lowermost horizontal rib 2d1, a handle rib 2e inclined forward from the back side of the horizontal rib 2d1 is formed.
f, the lowermost horizontal rib 2d1 and the handle rib 2
e and a pair of vertical ribs 2c form a handle space S1 into which a worker's hand can be inserted. 2g
Is an intermediate vertical rib formed in the middle of the pair of vertical ribs 2c and extending from the flange 2a to the handle rib 2e. Similarly, a pair of vertical ribs 3b are formed at a predetermined interval substantially at the center of the outer wall surface of the short side wall 3, and a pair of vertical ribs is also formed on the upper portion of the vertical rib 3b. Horizontal ribs 3c are formed to connect the ribs 3b. On the lower surface of the horizontal rib 3c,
3d of the handle, which is inclined forward from the back side of the handle, is formed by a plate portion 3e of the short side wall 3, a horizontal rib 3c, a handle rib 3d, and a pair of vertical ribs 3b. A handle space S2 into which a hand can be inserted is formed. As described above, in the present embodiment, the handle portions composed of the handle ribs 2e and 3d are formed on the opposing long side wall 2 and the opposing short side wall 3, respectively. Since it is not necessary to check which side wall the handle portion is formed on, it is possible to improve the workability of carrying the folding container. As shown in FIG. 11, a conventional folded container C1 in a folded state is shown in FIG.
As shown in FIG. 1, when assembling into a box shape, FIG.
As shown in FIG. 0, first, the short side wall 3 is erected substantially vertically, and then the long side wall 2 is erected.
The long side wall 2 does not have the handle opening 3a formed in the short side wall 3, and the long side wall 2 is in contact with the bottom 1, so that the long side 2 is located between the long side wall 2 and the bottom 1. Since there is no gap in which the fingers of the hand can be inserted, there is no reliable gripping point on the long side wall 2 and the workability of the operation of standing the long side wall 2 is poor. In particular, when the thickness of the long side wall 2 is small in order to reduce the weight of the folding container and the height at the time of folding as much as possible, the height of the rib formed on the long side wall 2 is also low. It is also difficult to grasp, so that the workability of erecting the long side wall 2 is further deteriorated. However, in the present invention, the handle rib 2e is also provided on the long side wall 2 which is to be erected later during the assembling work into the box shape.
Is formed, the long side wall 2 can be erected quickly and reliably, so that the workability of assembling the folding container is improved. Further, the folded container in a folded state is assembled by using an automatic machine such as a robot. In this case as well, the claw portion of the automatic machine such as a robot is caught by the conventional folding container. Since such a thing does not exist on the long side wall 2 and the short side wall 3, the folding container could not be assembled in a box shape by an automatic machine such as a robot, but the long side wall 2 of the folding container C1 of the present invention was used. And since the short side wall 3 is formed with handle ribs 2e and 3d that can be caught by a claw of an automatic machine such as a robot, the folding container C1 is formed into a box shape by the automatic machine such as a robot. Can be assembled. Further, in the present invention, instead of the handle openings 3a, 30a formed by drilling openings in the side wall as in the handle portion of the conventional folding container, the handle portion is provided on the side wall in the present invention. Rib 2 for handle without drilling opening
e, 3d, articles stored in the folding container do not spill out of the handle openings 3a, 30a, and therefore, over the handle,
Articles can be stored. Since the present invention has the above-described configuration, the following effects can be obtained. On the flange of the large folding container,
Since the fitting notch is formed and the fitting piece that can be fitted to the fitting notch is formed at the bottom of the small folding container, the small folding container is separated from the flange of the large folding container located below. It is possible to prevent troubles such as detachment, tilting and falling, and to stack small folding containers on large folding containers in a stable state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which a large-sized folding container used for stacking folding containers according to the present invention is assembled in a box shape. FIG. 2 is a perspective view showing a state in which a small-sized folding container used for stacking the folding containers of the present invention is assembled in a box shape. FIG. 3 is a rear perspective view of a small folding container used for stacking the folding containers according to the present invention. FIG. 4 is a partial perspective view of a large folding container and a small folding container immediately before the folding containers of the present invention are stacked. FIG. 5 is a perspective view showing a state in which small folding containers are stacked on a large folding container according to the present invention. FIG. 6 is a perspective view showing a state in which a folding container according to another embodiment of the present invention is assembled in a box shape. FIG. 7 is a partial perspective view of the folding container shown in FIG. 6; FIG. 8 is a partial perspective view of the folding container also shown in FIG. 6; FIG. 9 is a perspective view showing a state in which a large-sized folding container used for stacking conventional folding containers is assembled in a box shape. FIG. 10 is a perspective view of the large folding container shown in FIG. 9 in the process of being folded; FIG. 11 is a perspective view of the large folding container shown in FIG. 9 in a folded state. FIG. 12 is a perspective view showing a state in which small folding containers are stacked on a conventional large folding container. [Description of symbols] C1 ···········································································································, Bottom part 2, 20 ... long side wall 3, 30 ... short side wall 2b ... fitting notch 10d ........... Mating piece

Claims (1)

Claims: 1. A folding container capable of stacking a plurality of small folding containers assembled in a box shape on a large folding container assembled in a box shape. The flange of
A folding container, wherein a fitting notch is formed, and a fitting piece capable of fitting into the fitting notch is formed at the bottom of the small folding container.