JP4167962B2 - Folding container - Google Patents

Description

The present invention relates to a foldable folding container that includes a bottom portion and a side wall hinged to the bottom portion.

Conventionally, one opposing side wall of a folding container assembled in a box shape is laid down on the bottom with the leading ends of the opposing side walls overlapping each other, and then the other opposing side wall is There is known a folding container configured to fold a box-shaped folding container by being tilted onto the opposite side walls.

In order to increase the storage efficiency of the folded container in the folded state, in order to reduce the height of the folded container in the folded state, the folding is configured such that the front end portions of the side walls that are folded so as to overlap each other are thinned. A container is disclosed in Patent Document 1.
JP 2001-287737 A

In order to reduce the height of the folded folding container, if the tip of the side wall that is folded so as to overlap each other is made thinner, the rigidity and strength of the side wall will be reduced, and as a result, the folding container assembled in a box shape will be reduced. There was a problem that rigidity and strength were lowered. In particular, as in the folding container disclosed in Patent Document 1, when the tip of the long side wall is made thinner, the rigidity and strength of the long side wall, which originally deteriorated in rigidity and strength, are further reduced compared to the short side wall. Become.

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

In order to achieve the above-mentioned object, the present invention first folds the opposed long side walls of the folding container assembled in a box shape over the bottom, and then moves the opposed short side walls to the long side walls. In the folding container configured to fold up the folding container assembled in a box shape by tilting upward, the long side wall of the support piece constituting the male hinge member suspended from the lower flange of the long side wall The vertical end surface located on the inner surface side of the plate-like portion is disposed at a position retracted by a predetermined distance from the inner surface of the plate-like portion, and is formed by the lower flange of the long side wall and the vertical end surface of the support piece. in that corner, the inclined surface is formed, also the the lower portion of the outer surface of the support piece constituting the male hinge member, the hinge block, a plate of the long side wall of the hinge block The end face on the part side is provided so as to be substantially flush with the vertical end face located on the inner face side of the plate-like part of the support piece, and the cross-sectional shape perpendicular to the longitudinal direction is further provided. A female hinge member formed on the long side bank portion of the substantially inverted U-shaped bottom is formed on the vertical hole formed in the horizontal portion of the long side bank portion and the inner wall portion of the long side bank portion. A notch recess and a hook projecting on the upper end of the inner surface of the inner wall located on both sides of the notch recess, and when the long side wall is erected substantially vertically, A hinge block protruding from a support piece constituting the male hinge member disposed on the long side wall abuts on a hook portion constituting the female hinge member disposed on the bottom, or Furthermore, the long side wall that is to be tilted first is tilted toward the bottom portion. In this case, a vertical end surface of the support piece constituting the male hinge member disposed at a position retracted from the inner surface of the plate-like portion of the long side wall by a predetermined distance forms a cut constituting the female hinge member. While being configured to be placed on the horizontal edge of the notch recess, the long side wall is configured to be able to rattle in the vertical and horizontal directions .

Since this invention has the structure mentioned above, there can exist the effect described below.

Since the male hinge member disposed on the long side wall that has been tilted first is retracted by a predetermined distance from the inner surface of the long side wall, the male hinge member is connected to the inner surface of the long side wall in the folded state. Compared with the conventional long side wall which is substantially flush, it can be located below, so the height of the folded container in the folded state can be lowered, and the storage efficiency of the folded container in the folded state Can be improved.

Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

First, the overall configuration of the folding container of the present invention will be described with reference to FIGS.

Reference numeral 1 denotes a bottom portion having a substantially rectangular planar shape, and the bottom portion 1 is formed on a bank portion 1a formed on the opposite long side (hereinafter, referred to as a long side bank portion) 1a and on the opposite short side. And the height of the short side bank portion 1b is formed higher than the height of the long side bank portion 1a. In addition, an appropriate number of female hinge members H1 to be described later are arranged at predetermined intervals on the short side bank portion 1b and the long side bank portion 1a.

2 is a long side wall, and a male hinge member H2 to be described later is provided on the back surface of the lower flange 2a of the long side wall 2 in correspondence with the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1. It is arranged. 3 is a short side wall, and a male hinge member H2 described later is arranged on the back surface of the lower flange 3a of the short side wall 3 in correspondence with the female hinge member H1 disposed on the short side wall bank portion 1b of the bottom portion 1. It is installed.

By connecting the male hinge member H2 disposed on the lower flange 2a of the long side wall 2 and the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1, the long side wall 2 is connected to the bottom portion 1. By connecting the male hinge member H2 which is hinged and disposed on the lower flange 3a of the short side wall 3 and the female hinge member H1 disposed on the short side bank portion 1b of the bottom 1, the short side wall is obtained. 3 is hinged to the bottom 1 to form a folding container.

A vertically long engagement frame 4 extending in a direction substantially perpendicular to the plate-like part 3 b is formed at both ends of the horizontally long and substantially rectangular plate-like part 3 b of the short side wall 3. Are provided with an appropriate number of through holes 4a. The engagement frame 4 extends from the upper end of the plate-like portion 3b to the middle. Further, by forming a U-shaped slit 5 in the plate-like portion 3b located in the vicinity of the engagement frame 4, an elastic tongue piece 6 having the engagement frame 4 side formed at the free end is formed. A locking projection 6 a is formed at the tip of the elastic tongue piece 6 so as to face the engagement frame 4.

A vertically long engagement frame 7 is formed by extending the plate-like portion 2 b at both ends of the horizontally long and substantially rectangular plate-like portion 2 b of the long side wall 2. A fitting protrusion 7 a that fits into a through hole 4 a formed in the engaging frame 4 formed on the side wall 3 is formed.

As shown in FIG. 3, in order to assemble from a folded state into a box shape as shown in FIG. 1, first, the short side wall 3 in a substantially horizontal state is set up substantially vertically. . Next, when the long side wall 2 positioned on the upper side of the pair of opposed substantially horizontal long side walls 2 with the tip portions overlapping each other is rotated in the direction of the short side wall 3 which is set up substantially vertically, Before and after the fitting protrusion 7a formed on the engaging frame 7 of the side wall 2 is fitted into the through hole 4a drilled in the engaging frame 4 of the short side wall 3, the engaging frame 7 of the long side wall 2 is Then, the elastic tongue piece 6 abuts on the locking convex portion 6a of the elastic tongue piece 6 formed on the short side wall 3, and the elastic tongue piece 6 is deformed outward. Then, when the engagement frame 7 of the long side wall 2 passes through the locking convex portion 6a of the elastic tongue piece 6 formed on the short side wall 3, the elastic tongue piece 6 pushed outward by the long side wall 2 is Due to the restoring force, the locking projection 6a of the elastic tongue 6 abuts on the engagement frame 7 of the long side wall 2 standing substantially vertically, and prevents the long side wall 2 from rotating in the direction of the bottom 1. It is configured as follows. Similarly, among the pair of substantially horizontal long side walls 2 in which the tip portions overlap each other, the long side wall 2 positioned below is set up substantially vertically to assemble the folding container into a box shape.

In order to fold the folded container assembled in a box shape, first, the elastic tongue piece 6 of the short side wall 3 and the locking projection 6a of the elastic tongue piece 6 of the long side wall 2 are disengaged from each other. Then, by pushing outward, and then rotating the long side wall 2 in the direction of the bottom 1, a fitting protrusion 7 a formed on the engaging frame 7 of the long side wall 2 is drilled in the engaging frame 4 of the short side wall 3. The pair of long side walls 2 are discharged onto the bottom portion 1 so that the tip portions overlap each other. Thereafter, the folding container assembled in a box shape is folded by tilting the substantially vertical short side wall 3 toward the bottom 1.

Next, the female hinge member H1 will be described by taking the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 as an example and the lower flange of the long side wall 2 with reference to FIGS. The male hinge member H2 will be described taking the male hinge member H2 disposed in 2a as an example.

The long side bank portion 1a of the bottom portion 1 includes an inner wall portion 1a1 extending substantially vertically upward from an edge portion of the bottom plate 1c of the bottom portion 1, and a horizontal portion 1a2 extending substantially horizontally outward from the upper end of the inner wall portion 1a1. And an outer wall portion 1a3 extending downward from the edge of the horizontal portion 1a2 to the vicinity of the bottom plate 1c, and a cross-sectional shape perpendicular to the longitudinal direction is formed in a substantially inverted U shape. The long side bank portion 1a is formed with a vertical hole 1d having a rectangular planar shape. The inner wall portion 1a1 of the long side bank portion 1a has an open top and is directed toward the bottom plate 1c. An extending rectangular cutout recess 1e is formed. The width (length along the longitudinal direction of the long side bank portion 1a) W1 of the notch recess 1e is the long side length (length along the longitudinal direction of the long side bank portion 1a) W2 of the vertical hole 1d. The shorter and notched recess 1e is located at the approximate center of the long side of the vertical hole 1d. A hook 1f is projected from the upper end of the inner surface of the inner wall 1a1 located on both sides of the notch recess 1e (the surface located on the outer wall 1a3 side). A female hinge member H1 is constituted by the vertical hole 1d, the notch recess 1e, and the hook 1f formed in the long side bank portion 1a.

On the other hand, on the back surface of the lower flange 2a perpendicular to the plate-like portion 2b of the long side wall 2, a pair of plate-like support pieces 2c is provided at a predetermined interval and perpendicular to the longitudinal direction of the lower flange 2a. And a pair of support pieces 2c are connected by a connecting piece 2d. The support piece 2c has a vertical end surface 2c1 positioned on the inner surface of the plate-like portion 2b (a surface located on the inner side when the folding container is assembled in a box shape) 2b1 side of the plate-like portion 2b of the long side wall 2. The inner surface 2b1 is disposed so as to be retracted by a predetermined distance D1. In addition, it is preferable to form the inclined surface 2e in the corner formed by the lower flange 2a of the long side wall 2 and the vertical end surface 2c1 of the support piece 2c.

The width W3 of the support piece 2c in the direction perpendicular to the plate-like portion 2b is slightly shorter than the short side length W4 of the vertical hole 1d formed in the long side bank portion 1a of the bottom portion 1 described above. Is formed. A hinge block 2f projects in a direction perpendicular to the outer surface below the outer surface of the pair of support pieces 2c (the surface opposite to the surface opposite to the pair of support pieces 2c). A surface (hereinafter referred to as an upper surface) 2f1 facing the lower flange 2a of the hinge block 2f is formed as a flat surface substantially parallel to the lower flange 2a, and the plate-like portion 2b side of the upper surface 2f1 described above. A substantially rectangular parallelepiped abutment block 2f2 projects from the end located at the top, and a surface (bottom surface when the long side wall 2 stands upright) 2f3 opposite to the upper surface 2f1 is provided as a support piece. A substantially arcuate shape is formed along the substantially arcuate tip surface 2c.

The end surface 2f4 on the plate-like portion 2b side of the long side wall 2 of the hinge block 2f is configured to be substantially flush with the vertical end surface 2c1 located on the inner surface 2b1 side of the plate-like portion 2b of the support piece 2c. The width W5 in the direction perpendicular to the lower flange 2a of the hinge block 2f (the height from the bottom surface 2f3 of the hinge block 2f to the top surface of the contact block portion 2f2) W5 is the outer wall portion 1a3 of the long side bank portion 1a of the bottom portion 1. And a gap between the front end of the hook 1f projecting from the inner surface of the inner wall portion 1a1. The pair of support pieces 2c and the hinge block 2f constitute a male hinge member H2.

In order to hinge-connect the bottom 1 and the long side wall 2, as shown in FIG. 4, the long side wall 2 is disposed in a substantially horizontal state, and then the long side wall 2 is maintained while maintaining the state. When it is lowered toward the bottom part 1 and the support part 2c on which the hinge block 2f formed on the long side wall 2 protrudes is inserted into the vertical hole 1d and the notch recess 1e formed on the long side bank part 1a. The hinge block 2f passes between the outer wall 1a3 of the long side bank 1a formed on the bottom 1 and the hook 1f protruding from the inner surface of the inner wall 1a1, as shown in FIG. In addition, the long side bank portion 1a formed on the bottom portion 1 is disposed between the outer wall portion 1a3 and the inner wall portion 1a1. In this way, the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 and the male hinge member H2 disposed on the long side wall 2 are hinge-connected. Since the hinge connection between the female hinge member H1 disposed on the short side bank portion 1b of the bottom portion 1 and the male hinge member H2 disposed on the short side wall 3 is the same, the description thereof is omitted.

FIG. 5 shows a hinge connection state between the long side wall 2 and the bottom portion 1 of the pair of long side walls 2 that are first tilted in the direction of the bottom portion 1. The front end portion of the long side wall 2 is in contact with the bottom portion 1, and the vertical end surface 2 c 1 positioned on the inner surface 2 b 1 side of the plate-like portion 2 b of the support piece 2 c suspended from the lower flange 2 a of the long side wall 2 It is comprised so that it may be mounted in the horizontal edge part 1e1 which comprises the notch recessed part 1e formed in the inner wall part 1a1 of 1 long side bank part 1a.

Further, as described above, in the state where the first long side wall 2 is tilted toward the bottom 1, the contact block portion 2 f 2 of the hinge block 2 f formed on the outer surface of the pair of support pieces 2 c is on the long side side. The hook block 1f1 formed on the inner wall 1a1 of the bank 1a is positioned below the flange 1f1, and between the flange 1f1 and the contact block 2f2, the hinge block 2f, in other words, A predetermined gap is formed so that the long side wall 2 can rattle in the vertical direction. Further, between the lower end portion of the outer wall section 1a3 and the hinge block 2f long side bank portions 1a, and between the upper end portion of the hook 1f and the hinge block 2f projecting from the inner surface of the inner wall portion 1a1 is A predetermined gap is formed, and the hinge block 2f, in other words, the long side wall 2 is configured to be able to rattle in the left-right direction. By configuring in this way, the hinge block 2f that protrudes from the support piece 2c formed on the long side wall 2 that is first tilted on the bottom portion 1 becomes the long side bank portion 1a that is formed on the bottom portion 1. Therefore, the long side wall 2 can be rotated until the front end of the long side wall 2 abuts against the bottom plate 1c of the bottom 1 so that the first side wall 1a1 does not come into contact with the hook 1f. Compared to the case where the tip of the long side wall 2 to be tilted is not in contact with the bottom plate 1c of the bottom 1, the tip of the long side wall 2 to be tilted first can be arranged at a lower position. The overall height of the folded folding container can be reduced, and thus the storage efficiency of the folded folding container can be increased.

In addition, as described above, the support piece 2c formed on the long side wall 2 that is first tilted on the bottom 1 in a state where the long side wall 2 is tilted on the bottom 1 and the folding container is folded. The hinge block 2f projecting from the hook does not come into contact with the hook 1f projecting from the inner wall 1a1 of the long side bank portion 1a formed at the bottom 1, so that the hinge block 2f and the support piece 2c It is possible to prevent the hooks 1f and the like from being damaged.

When the substantially horizontal long side wall 2 is stood substantially vertically from the folded state of the folding container, a contact block portion 2f2 of the hinge block 2f is formed on the bottom portion 1 as shown in FIG. Further, the lower flange 2a of the long side wall 2 enters the horizontal portion 1a2 of the long side bank portion 1a of the bottom portion 1 while entering the bottom portion 1f1 of the hook 1f protruding from the inner wall portion 1a1 of the long side bank portion 1a. Will be placed. The abutment block portion 2f2 of the hinge block 2f that has entered under the hook portion 1f1 of the hook 1f is configured to come into contact with the hook portion 1f1 of the hook 1f or take an approaching position. Therefore, when the folding container is assembled in a box shape, the long side wall 2 does not rattle in the vertical direction.

Further, the vertical end surface 2c1 located on the inner surface 2b1 side of the plate-like portion 2b of the support piece 2c suspended from the lower flange 2a of the long side wall 2 is retracted by a predetermined distance D1 from the inner surface 2b1 of the plate-like portion 2b. Therefore, the first long side wall 2 is tilted in the direction of the bottom 1, and the vertical end surface 2 c 1 of the support piece 2 c forms a notch recess 1 e formed in the inner wall 1 a 1 of the long side bank 1 a of the bottom 1. In the state of being placed on the edge 1e1, the vertical end surface 2c1 of the support piece 2c is compared to the conventional long side wall in which the vertical end surface 2c1 of the support piece 2c is substantially flush with the inner surface 2b1 of the plate-like portion 2b. The long side wall 2 is positioned downward by the amount retracted from the inner surface 2b1 of the plate-like portion 2b of the long side wall 2 (the above retracted distance D1). Therefore, the height of the folded container in the folded state can be reduced, and the storage efficiency of the folded container in the folded state can be improved.

Note that a male hinge member H2 similar to the male hinge member H2 disposed on the lower flange 2a of the long side wall 2 is also disposed on the back surface of the lower flange 3a of the short side wall 3 that is tilted later. The supporting piece 2c constituting the male hinge member H2 of the side wall 3 does not necessarily have to be retracted like the supporting piece 2c of the male hinge member H2 disposed on the lower flange 2a of the long side wall 2.

Further, as described above, since the inclined surface 2e is formed at the corner formed by the lower flange 2a of the long side wall 2 and the vertical end surface 2c1 of the support piece 2c, the folding container assembled in a box shape. When taking out the article stored in the box, the article can be taken out smoothly along the inclined surface 2e. In the case where such an inclined surface 2e is not formed, the article is caught on the corner of approximately 90 degrees formed by the lower flange 2a and the plate-like portion 2b of the long side wall 2, and the smooth article can be taken out. Will be disturbed.

FIG. 1 is a perspective view of the folding container of the present invention in a state of being assembled into a box shape. FIG. 2 is a perspective view of the folding container of the present invention during assembly or folding. FIG. 3 is a perspective view of the folding container of the present invention in a folded state. FIG. 4 is a partially exploded perspective view of the long side wall and the bottom of the folding container of the present invention. FIG. 5 is a vertical cross-sectional view of the hinge connection portion for explaining the hinge connection between the long side wall and the bottom of the folding container of the present invention. FIG. 6 is also a vertical sectional view of a hinge connection portion for explaining the hinge connection between the long side wall and the bottom of the folding container of the present invention.

Explanation of symbols

H1 ... Female hinge member H2 ... Male hinge member 1 ... Bottom 1a ...・ ・ ・ ・ ・ ・ Long side bank 1b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short side bank 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side wall 3 ・ ・ ・.... Short side wall

Claims (1)

Folding assembled into a box by first folding the opposing long side walls of the folding container assembled into a box shape over the bottom, and then bringing the opposing short side walls over the long side wall. In the folding container configured to fold the container, a vertical end surface located on the inner surface side of the plate-like portion of the long side wall of the support piece, which is suspended from the lower flange of the long side wall and constitutes the male hinge member, The inner surface of the plate-shaped part is disposed at a retracted position by a predetermined distance, and an inclined surface is formed at a corner formed by the lower flange of the long side wall and the vertical end surface of the support piece , Further, a hinge block is provided at a lower portion of the outer surface of the support piece constituting the male hinge member, and an end surface of the hinge block on the plate-like portion side of the long side wall of the plate-like portion of the support piece. Projected so as to be substantially flush with the vertical end face located on the surface side, and a cross-sectional shape perpendicular to the longitudinal direction is formed on the long side bank portion of the substantially inverted U-shaped bottom The female hinge member formed is located in a vertical hole formed in a horizontal portion of the long side bank portion, a notch recess formed in an inner wall portion of the long side bank portion, and both sides of the notch recess. A hook projecting from the upper end of the inner surface of the inner wall, and when the long side wall is set up substantially vertically, it constitutes the male hinge member disposed on the long side wall. The hinge block protruding from the support piece is configured to abut or approach the hook of the hook constituting the female hinge member disposed on the bottom, and is also tilted first. When the long side wall is tilted in the bottom direction, the inner surface of the plate-like portion of the long side wall The vertical end surface of the support piece constituting the male hinge member disposed at the retracted position by a predetermined distance is configured to be placed on the horizontal edge of the notch recess constituting the female hinge member. And the long side wall is configured to be able to rattle vertically and horizontally .

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