JP4480347B2 - Folding container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding container that can be folded so that a side wall disposed so as to surround the bottom portion overlaps the bottom portion.
[0002]
[Prior art]
Conventionally, a long side wall connected via a hinge member to the opposite long side portion of the bottom portion, which has a substantially rectangular planar shape, and a corresponding short side portion of the bottom portion are connected via a hinge member. It is assembled into a box shape by standing up the long side wall and the short side part substantially perpendicular to the bottom part, and when folded, the long side wall and the short side part are overlapped on the bottom part. There is known a folding container in which the side wall is folded.
[0003]
[Problems to be solved by the invention]
The conventional folding container described above has a problem that the long side wall and the short side wall are weak in strength and easily deformed. In particular, when the width of the long side wall exceeds 1 meter or close to 2 meters as the size of the folding container increases, the deformation of the long side wall becomes prominent and transports with the long side wall assembled in a box shape. Difficult to do.
[0004]
When transporting a folded container assembled in a box shape, an operator is usually positioned on one long side wall, and with both hands, a gripping part formed at the upper center of the opposing short side wall is used. Hold the folding container assembled in a box shape, but the width of the short side wall is short, so the short side wall will not be greatly bent inward, so the items stored in the folding container will be damaged There is nothing to do. However, when the width of the long side wall exceeds 1 meter or close to 2 meters, it carries a folding container assembled in a box shape with a gripping part formed at the upper center of the opposite short side wall. It is usually difficult for an operator to carry a folding container assembled in a box shape with both hands, each with the upper part of the opposite long side wall after being positioned on one long side wall side Has been done. In this way, when a folding container assembled in a box shape with the upper part of the opposing long side wall is transported, the long side wall will be greatly curved inward, and therefore the items stored in the folding container will be damaged. Or the long side wall is damaged.
[0005]
An object of the present invention is to solve the problems of the above-described conventional folding container.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a bottom portion and a pair of long side walls hinged to the bottom portion, and a pair of short side walls hinged to the bottom portion, and is assembled from a box shape. First, the opposing short side wall is folded down so as to overlap the bottom so that a predetermined gap is formed between the upper horizontal flanges facing each other in the state where the short side wall is superimposed on the bottom. Next, in the folding container that can be folded by placing the opposing long side walls so that the upper horizontal flanges are positioned close to each other and overlap the short side wall that has been previously tilted, By projecting the central region of the part from the outside to the inside, the long side wall has a substantially rectangular flat plate part parallel to the plate part of the long side wall, and the flat plate part 4 side circumference From the long together are oblong projecting portion made of a plate-like portion inclined portion extending in a direction to form a side wall, the width of the overhang portion of the horizontally long, a pair of the state of being superimposed on the bottom The short side wall is formed to be narrower than the gap width between the opposite upper end horizontal flanges, and the amount of protrusion of the laterally extending part from the inner surface of the plate-like part of the long side wall is overlapped on the bottom part. When the folding container is folded, the flat plate-like portion of the overhanging portion comes into contact with the upper surface of the bottom portion by making it the same as the depth of the recessed space formed between the opposite upper horizontal flanges of the short side wall It is comprised as follows.
[0007]
【Example】
Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.
[0008]
The folding container of the present invention includes a bottom 1, a long side wall 2 that is hinged to the long side bank 1a of the bottom 1, and a short side bank 1b that is lower than the long side 1a. From the assembled state in the box shape shown in FIG. 1, first, the short side wall 3 is formed as shown in FIG. The folding container is placed at a height as shown in FIG. 3 by tilting over the bottom 1 and then tilting the long side wall 2 over the short side wall 3 superimposed on the bottom 1. It is configured so that it can be folded into a low compact. Further, from the state shown in FIG. 3, the long side wall 2 is erected substantially vertically, and then the short side wall 3 is erected substantially vertically, so that the folded side is folded as shown in FIG. The container can be assembled into a box shape.
[0009]
The long side wall 2 has a horizontally long and substantially rectangular plate-like portion 2 a, and both vertical ends of the long side wall 2 are substantially perpendicular to the plate-like portion 2 a and toward the inner wall surface of the long side wall 2. A vertically long engagement frame 2b is formed, and the engagement frame 2b has an appropriate number of fitting holes 2b1 substantially parallel to the plate-like portion 2a at a predetermined interval in the vertical direction. (In this embodiment, two fitting holes 2b1 are formed).
[0010]
A U-shaped slit 2c is formed in the vicinity of the upper end corners of the plate-like portion 2a of the long side wall 2, and the U-shaped slit 2c is formed so as to be surrounded by the slit 2c. A cantilever-shaped locking elastic piece 2d extending in the horizontal direction is formed. A locking projection 2d1 projects from the inner surface of the locking elastic piece 2d, and the engagement frame 2b side of the locking projection 2d1 is substantially the same as the inner surface of the engagement frame 2b. In addition to being formed on parallel vertical surfaces, an inclined surface is formed on the inner surface of the locking projection 2d1. Further, the locking projection 2d1 of the locking elastic piece 2d has a tip protruding a predetermined amount from the inner surface 2a1 of the long side wall 2 (the surface positioned inside when the folding container is assembled into a box shape). It is formed as follows.
[0011]
An upper end horizontal flange 2e that is substantially perpendicular to the plate-like part 2a and extends outward is formed at the upper end edge of the plate-like part 2a of the long side wall 2, and the lower end edge of the plate-like part 2a Similarly, a lower end horizontal flange 2f that is substantially perpendicular to the plate-like portion 2a and extends outward is formed, and further, the outer surface of the plate-like portion 2a (when the folding container is assembled into a box shape, An appropriate number of vertical ribs 2g and horizontal ribs 2h are formed on the outer surface 2a2.
[0012]
The short side wall 3 has a horizontally long and substantially rectangular plate-like portion 3a, and upper and lower ends of the plate-like portion 3a are substantially perpendicular to the plate-like portion 3a and extend to the outside at the upper and lower ends. 3b and a lower end horizontal flange 3c are respectively formed, and left and right ends of the plate-like portion 3a are end vertical flanges 3d that are substantially perpendicular to the plate-like portion 3a and extend outward. Is formed. A vertically elongated extension frame 3e is formed outside the end vertical flange 3d, and an appropriate number of fitting protrusions 3e1 are formed along the end vertical flange 3d on the extension frame 3e (this book). In the embodiment, two fitting protrusions 3e1 are formed corresponding to the two fitting holes 2b1 formed in the engagement frame 2b. The fitting protrusion 3e1 is configured to be inserted into the fitting hole 2b1 formed in the engagement frame 2b of the long side wall 2 described above. Further, an appropriate number of vertical ribs 3f and horizontal ribs 3g are formed on the outer surface 3a1 of the plate-like portion 3a (the surface located outside when the folding container is assembled into a box shape).
[0013]
In order to assemble the folding container from the folded state shown in FIG. 3 into the box shape shown in FIG. 1, first, the long side wall 2 in the substantially horizontal state is rotated in the vertical direction. Then, as shown in FIG. Next, when the short side wall 3 folded so as to overlap the bottom portion 1 is rotated in the vertical direction from the substantially horizontal state, the extension frame 3e of the short side wall 3 is engaged with the engagement frame 2b formed on the long side wall 2. When the short side wall 3 is further rotated in the vertical direction, the end vertical surface of the extension frame 3e of the short side wall 3 protrudes from the inner wall surface of the long side wall 2. The latching protrusion 2d1 is pushed while riding on the inclined surface of the piece 2d, and the latching elastic piece 2d is bent outwardly against the elasticity of the latching elastic piece 2d. Further, when the short side wall 3 is rotated in the vertical direction, the fitting protrusion 3e1 projecting from the extension frame 3e of the short side wall 3 is fitted into the fitting hole 2b1 formed in the engaging frame 2b of the long side wall 2. Inserted into. In the process in which the fitting protrusion 3e1 protruding from the extension frame 3e of the short side wall 3 is inserted into the fitting hole 2b1 formed in the engagement frame 2b of the long side wall 2, the extension frame 3e of the short side wall 3 is inserted. The locking projection 2d1 of the locking elastic piece 2d formed on the long side wall 2 is removed, and the locking elastic piece 2d returns to its original position due to its elasticity, and the vertical surface of the locking elastic piece 2d is , Abutting or approaching the back plate portion of the extension frame 3e of the short side wall 3. Therefore, even if the short side wall 3 tries to rotate in the direction of the bottom 1, the extension frame 3 e of the short side wall 3 comes into contact with the locking protrusion 2 d 1 of the locking elastic piece 2 d formed on the long side wall 2. Therefore, even if the short side wall 3 is loaded from the outside, it does not fall in the direction of the bottom 1. Similarly, the other short side wall 3 is rotated from the substantially horizontal state to the vertical direction to assemble the folding container into a box shape.
[0014]
When the folding container assembled in a box shape is folded, the locking projection 2d1 of the locking elastic piece 2d formed on the long side wall 2 is moved away from the extension frame 3e of the short side wall 3, that is, outward. The locking elastic piece 2d of the long side wall 2 is bent against the elasticity. When the locking projection 2d1 of the locking elastic piece 2d formed on the long side wall 2 is disengaged from the extension frame 3e of the short side wall 3, the short side wall 3 is rotated in the direction of the bottom 1 to make a pair of relative The short side wall 3 is overlapped on the bottom 1. Next, the pair of opposing long side walls 2 are stacked on the pair of opposing short side walls 3 stacked on the bottom portion 1, whereby the folding container assembled in a box shape can be folded.
[0015]
On the long side wall 2 of the folding container described above, the inner surface of the plate-like portion 2a (the surface located on the inner side when the folding container is assembled into a box shape) 2a1 has a plate-like portion 2a on the outer side. The overhang | projection part V formed by bulging inward from is formed. In the present embodiment, the overhanging portion V extends in the direction of the plate-like portion 2a from the substantially flat flat plate-like portion v1 parallel to the plate-like portion 2a and the peripheral edges of the four sides of the flat plate-like portion v1. An inclined portion v2 is formed.
[0016]
The lateral width (length along the longitudinal direction of the long side wall 2) W1 of the overhanging portion V formed on the plate-like portion 2a of the long side wall 2 is the short side wall 3 of the folding container as shown in FIG. Is preferably narrower than the gap width W2 between the upper end horizontal flanges 3b of the short side wall 3 when tilted so as to overlap the bottom portion 1. Further, the overhang amount V1 of the overhang portion V (distance from the inner surface 2a1 of the plate-like portion 2a of the long side wall 2 to the flat plate-like portion v1 of the overhang portion V) T1 is as shown in FIG. When the short side wall 3 of the folding container is tilted so as to overlap the bottom 1, the depth of the recessed space formed between the upper horizontal flanges 3b of the short side wall 3 (substantially equal to the thickness of the short side wall 3) or less It is preferable to form. In this way, the lateral width W1 of the overhang portion V is made narrower than the gap width W2 between the upper end horizontal flanges 3b of the short side wall 3 superimposed on the bottom portion 1, and the overhang amount T1 of the overhang portion V is set to the bottom portion 1. When the long side wall 2 is stacked on the short side wall 3 stacked on the bottom portion 1 by forming it below the depth of the recessed space formed between the upper end horizontal flanges 3b of the short side wall 3 stacked on the bottom side 1. Further, since the overhanging portion V formed on the long side wall 2 is completely inserted into the recessed space formed between the upper end horizontal flanges 3b of the short side wall 3, the height of the folded container in the folded state can be increased. When the folding container of the present invention in which the overhanging portion V is formed on the long side wall 2 is the same as the folding height of the conventional folding container in which the overhanging portion V is not formed on the long side wall 2, To prevent the height from rising Kill. Further, even if a load is applied from above to the central portion of the long side wall 2 of the folded container in the folded state, the overhanging portion V of the long side wall 2 abuts on the upper surface of the bottom portion 1, so that the long side wall 2 is It is possible to prevent the long side wall 2 from being greatly bent and damaged.
[0017]
The height H1 (the length along the height direction of the long side wall 2) H1 of the overhanging portion V formed on the plate-like portion 2a of the long side wall 2 can be set as appropriate. For example, as shown in FIG. 1, it can be lower than the total height of the long side wall 2, or can be formed to have substantially the same height as the total height of the long side wall 2. As described above, when the height H1 of the overhanging portion V is set lower than the total height of the long side wall 2 as shown in FIG. It can be formed close to the horizontal flange 2 e, can be formed in the middle of the long side wall 2, or can be formed below the long side wall 2.
[0018]
As described above, since the protruding portion V is formed on the long side wall 2 by bulging the plate-like portion 2a of the long side wall 2 from the outside toward the inside, the rigidity of the long side wall 2, in particular, the long side wall 2 is improved in rigidity, and even when a load is applied from the outside to the long side wall 2 of the folding container assembled in a box shape, the long side wall 2 can be prevented from being bent inward. Accordingly, a gripping portion (for example, configured as an opening formed in the plate-like portion 2a located near the upper end horizontal flange 2e of the long side wall 2) formed at the upper center of the opposing long side wall 2 or the like. When carrying a folding container assembled in a box shape with the top horizontal flange 2e, the long side wall 2 is not greatly bent inward, and the articles stored in the folding container are damaged, It is possible to prevent the long side wall 2 from being damaged.
[0019]
In the above-described embodiment, when folding the folding container assembled in a box shape, the long side wall 2 is first tilted, and then the short side wall 3 is tilted. Alternatively, the short side wall 3 can be brought down and then the long side wall 2 can be put down.
[0020]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0021]
By projecting the long side wall from the outside to the inside, the overhanging part was formed on the long side wall, so the rigidity of the long side wall was improved and the long side wall of the folding container assembled in a box shape was Even when a load is applied, it is possible to suppress the long side wall from being bent inward.
[Brief description of the drawings]
FIG. 1 is a perspective view of a folding container according to the present invention assembled in a box shape.
FIG. 2 is a perspective view in the middle of assembling or folding the folding container of the present invention.
FIG. 3 is a perspective view showing a folded state of the folding container of the present invention.
FIG. 4 is a perspective view of a folding container according to another embodiment of the present invention assembled in a box shape.
[Explanation of symbols]
V ... overhang 1 ... bottom 2 ... ·················································································・ ・ ・ ・ ・ ・ ・ ・ Short side wall 3a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Plate-shaped part

Claims (1)

Which has a bottom portion and a bottom hinged pair of long side walls and the hinged pair of short side walls also the bottom, from a state of being assembled into a box shape, first of all, the opposite short side walls, the short In a state where the side wall is overlapped with the bottom part, the upper side horizontal flanges are brought into contact with each other so that a predetermined gap is formed between the opposite upper end horizontal flanges of the short side wall so as to overlap the bottom part. In the folding container that is positioned close to each other and can be folded by overlapping with the previously collapsed short side wall, the central region of the plate-like portion of the long side wall is directed from the outside to the inside. By bulging, the long side wall includes a substantially square flat plate portion parallel to the plate portion of the long side wall, and a plate portion of the long side wall from the peripheral edges of the four sides of the flat plate portion. Extending in the direction With projecting portion of the oblong comprising a slope portion is formed, the width of the overhang portion of the landscape is narrower than the gap width between the pair of short side walls opposite the upper end horizontal flange of the state of being superposed on the bottom In addition, the amount of protrusion from the inner surface of the plate-like portion of the long side wall of the horizontally long overhanging portion is formed between the opposite upper horizontal flanges of the pair of short side walls superimposed on the bottom portion. A folding container characterized in that the flat plate-like portion of the overhanging portion is configured to come into contact with the upper surface of the bottom portion when the folding container is folded by being the same as the depth of the recessed space.

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