JP4319941B2 - Folding container - Google Patents

Description

The present invention comprises a bottom, one opposing side wall hinged to one opposite bank portion of the bottom, and another opposite side wall hinged to the other opposite bank portion of the bottom. It relates to a folding container.

Conventionally, a folding container configured to hinge-connect a bottom and a side wall by inserting a leg of a male hinge formed on a side wall into a recess of a female hinge formed on a bottom bank, It is disclosed in Patent Document 1.
JP 2002-362555 A

In the case of the above-described folding container, when the opposing one side wall and the other side wall are assembled in a box shape in a state of standing substantially vertically with respect to the bottom portion, they are formed on the bottom bank portion. Since the leg part of the male hinge part formed on the side wall, which is inserted in the concave part of the female hinge part, is movable in the vertical direction, the operator has assembled the box with the side wall. When trying to lift the folding container, there was a problem that the side wall was lifted from the bottom.

An object of the present invention is to prevent the side wall of the above-described conventional folding container from being lifted.

In order to achieve the above-mentioned object, the present invention is hinged to the bottom and one side wall that is hinged to the opposite bank of the bottom and the other bank opposite to the bottom. In the folding container having the other opposite side wall, the support piece constituting the male hinge member formed on at least one opposite side wall constitutes the female hinge member formed on the inner vertical portion of the bottom bank portion The side wall on which the male hinge member is formed is formed with an engagement member for preventing lifting, and is formed on the bank portion at the bottom. A protrusion for preventing lifting is formed in the formed corner hole, and when the side wall is erected substantially vertically, the engagement member for preventing lifting is formed on the side wall. As engagement portion, while being inserted into said bottom bank corners formed portion through hole of the engagement portion of the lift preventing engagement member comes into contact with the lower surface of the anti-projections the floating By being configured, the one side wall is configured to be prevented from being lifted from the bank portion.

When the side wall is erected substantially perpendicular to the bottom, the lifting prevention engaging member formed on the side wall engages with the lifting prevention protrusion formed on the bank, and the side wall bank It is configured to prevent lifting from the side, so even if the side wall of the folding container assembled in a box shape is gripped and lifted, the side wall will not lift from the bottom, so it is assembled in a box shape. The handling of handling work such as transporting and transporting folded containers is 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. In this embodiment, the height of the long side bank portion 1a is higher than the height of the short side bank portion 1b. Is formed. Further, an appropriate number of female hinge members H1 described later are arranged at predetermined intervals on the long side bank portion 1a and the short side bank portion 1b.

Reference numeral 2 denotes a long side wall, and a male hinge member H2, which will be described later, is provided on the back surface of the lower end flange 2a of the long side wall 2 in correspondence with the female hinge member H1 disposed on the long side bank portion 1a. It is arranged. Reference numeral 3 denotes a short side wall, and a male hinge member H2 to be described later is arranged on the back surface of the lower end flange 3a of the short side wall 3 corresponding to 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 end 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 that is hinged and disposed on the lower end flange 3a of the short side wall 3 and the female hinge member H1 that is 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 2 b is formed at both ends of the horizontally long and substantially rectangular plate-like part 2 b of the long side wall 2. Are provided with an appropriate number of through holes 4a. Further, by forming a U-shaped slit 5 in the plate-like portion 2b located in the vicinity of the engagement frame 4, an elastic tongue piece 6 having the engagement frame 4 side formed at a 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 3 b at both ends of the horizontally long, substantially rectangular plate-like portion 3 b of the short side wall 3. A fitting protrusion 7a is formed to fit into a through hole 4a formed in the engaging frame 4 of the side wall 2.

As shown in FIG. 3, in order to assemble from a folded state into a box shape as shown in FIG. 1, first, as shown in FIG. When the long side wall 2 of the short side wall 2 is raised substantially vertically and then the short side wall 3 is rotated in the direction of the long side wall 2 erected substantially vertically, the fitting protrusion 7a formed on the engagement frame 7 of the short side wall 3 is obtained. The engagement frame 7 of the short side wall 3 is engaged with the elastic tongue piece 6 formed on the long side wall 2 before and after fitting into the through hole 4a formed in the engagement frame 4 of the long side wall 2 The elastic tongue piece 6 is deformed outward by coming into contact with the convex portion 6a. Then, when the engagement frame 7 of the short side wall 3 passes through the locking projection 6a of the elastic tongue piece 6 formed on the long side wall 2, the elasticity pushed outward by the engagement frame 7 of the short side wall 3 The tongue piece 6 returns due to its restoring force, and the locking convex portion 6a of the elastic tongue piece 6 comes into contact with the engagement frame 7 of the short side wall 3 standing substantially vertically, toward the bottom 1 of the short side wall 3. It is comprised so that rotation of this may be prevented.

In order to fold the folded container assembled in a box shape, first, the elastic tongue piece 6 of the long side wall 2 is first moved so that the engaging projection 6 a is disengaged from the engaging frame 7 of the short side wall 3. Then, by pushing outward, and then turning the short side wall 3 in the direction of the bottom 1, a fitting protrusion 7 a formed on the engaging frame 7 of the short side wall 3 is drilled in the engaging frame 4 of the long side wall 2. The short side wall 3 is lowered onto the bottom 1 by discharging from the through-hole 4a. Thereafter, the folding container assembled in a box shape is folded by tilting the substantially vertical long side wall 2 toward the bottom 1.

In the folded state, the short side wall 3 that is tilted first from the substantially vertical state is configured such that the short side walls 3 are partially overlapped with each other when they are overlapped with the bottom 1. Furthermore, the long side walls 2 that are tilted later are also configured such that the long side walls 2 partially overlap each other when tilted from a substantially vertical state.

Next, the female hinge member H1 will be described with reference to FIGS. 4 to 8 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 end flange of the long side wall 2 will be described. 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 vertical portion 1a1 extending substantially vertically upward from an edge portion of the bottom plate 1c of the bottom portion 1, and a horizontal portion extending substantially horizontally outward from the upper end of the inner vertical portion 1a1. The portion 1a2 and the outer vertical portion 1a3 extending downward from the edge of the horizontal portion 1a2 substantially in parallel with the inner vertical portion 1a1, and the cross-sectional shape perpendicular to the longitudinal direction has a substantially inverted U shape. It is formed in a shape.

A vertical hole h1 having a rectangular planar shape is formed in the horizontal portion 1a2 of the long side bank portion 1a. In addition, the inner vertical portion 1a1 of the long side bank portion 1a is formed with a rectangular cutout recess h2 that is open at the top and extends in the direction of the bottom plate 1c. The width (length along the longitudinal direction of the long side bank portion 1a) W1 of the notch recess h2 is the long side length (length along the longitudinal direction of the long side bank portion 1a) W2a of the vertical hole h1. The shorter and cut-out recess h2 is located at the approximate center of the long side of the vertical hole h1.

A hook h3 protrudes from the upper end portion of the inner surface of the inner vertical portion 1a1 (surface located on the outer vertical portion 1a3 side) located on both sides of the notch recess h2, and the hook h3 is a long side bank portion. An upper inclined surface h3a that is inclined so as to gradually approach the outer vertical portion 1a3 from the horizontal portion 1a2 toward the outer vertical portion 1a3 and a substantially horizontal flange portion h3b.

The female hinge member H1 is comprised by the vertical hole h1, the notch recessed part h2, and the hook h3 which were formed in the long side bank part 1a mentioned above.

On the other hand, a male hinge member H2 is formed on the back surface of the lower end flange 2a perpendicular to the plate-like portion 2b of the long side wall 2. The male hinge member H2 has a plate-like support piece h10 that is suspended from the back surface of the lower end flange 2a at a predetermined interval and perpendicular to the longitudinal direction of the lower end flange 2a. The pair of support pieces h10 are connected by a connecting piece h11. The width W3 between the outer surfaces of the pair of support pieces h10 (the surface opposite to the surface opposite to the pair of support pieces h10) is formed slightly narrower than the lateral width W1 of the notch recess h2. The support piece h10 is configured to be insertable into the notch recess h2. Further, a hinge block h12 is attached to the lower end portion of the outer side surface of the pair of support pieces h10, and a surface facing the lower end flange 2a of the hinge block h12 (hereinafter referred to as the upper surface) h12a is the lower end flange 2a. Further, a substantially rectangular parallelepiped contact block h12b projects from an end portion of the upper surface h12a located on the plate-like portion 2b side.

The height W4 in the direction perpendicular to the lower end flange 2a of the hinge block h12 (the height from the bottom surface h12c of the hinge block h12 to the top surface of the contact block portion h12b) W4 is perpendicular to the outside of the long side bank portion 1a of the bottom portion 1 It is formed slightly wider than the gap W5 between the portion 1a3 and the tip of the hook h3 protruding from the inner surface of the inner vertical portion 1a1.

The pair of supporting pieces h10, the connecting piece h11, and the hinge block h12 having the contact block portion h12b constitute a male hinge member H2.

The width (interval between the vertical side surfaces h12d of the pair of hinge blocks h12) W6 along the plate-like portion 2b of the long side wall 2 of the male hinge member H2 is the long side length W2a of the vertical hole h1 constituting the female hinge member H1. Further, the male hinge member H2 formed slightly shorter and formed on the back surface of the lower end flange 2a of the long side wall 2 is a vertical hole formed in the long side bank portion 1a forming the female hinge member H1. It is configured so that it can be inserted into h1.

Further, under the hook h3b of the hook h3 projecting from the upper end of the inner surface of the inner vertical portion 1a1 located on both sides of the notch concave portion h2 formed in the inner vertical portion 1a1 of the long side bank portion 1a. The height of the notch recess h2 that is positioned, in other words, the height W8 from the flange h3b of the hook h3 to the lower end h2a of the notch recess h2, is the width W7 of the support piece h10 that constitutes the male hinge member H2. The height is more than twice as high. Further, the height W9 from the lower end h2a of the notch concave portion h2 formed in the inner vertical portion 1a1 of the long side bank portion 1a to the bottom plate 1c of the bottom portion 1 is the thickness of the short side wall 3 (in the plate-like portion 3b). On the other hand, it is formed at least twice as long as the vertical length (T1).

In order to hinge-connect the bottom 1 and the long side wall 2, as shown in FIG. 5, the long side wall 2 is arranged in a substantially horizontal state so as to be substantially parallel to the bottom 1, and then the state is maintained. The long side wall 2 is moved downward toward the bottom 1 while maintaining the above-mentioned, and the support piece h10 on which the hinge block h12 formed on the long side wall 2 is projected is cut off on the long side bank portion 1a. When the hinge block h12 is inserted into the notch recess h2 and the hinge block h12 is inserted into the vertical hole h1 formed in the long side bank portion 1a, the height W4 in the direction perpendicular to the lower end flange 2a of the hinge block h12 is Since the gap W5 between the outer vertical portion 1a3 of the long side bank portion 1a and the tip of the hook h3 protruding from the inner surface of the inner vertical portion 1a1 is slightly wider, the hinge block h12 is As shown in FIG. Mounted on the upper inclined surface h3a of the hook h3 projecting from the inner surface of the inner vertical portion 1a1 located on both sides of the notch recess h2 formed in the inner vertical portion 1a1 of the long side bank portion 1a of the bottom portion 1. It will be. Thereafter, when the long side wall 2 and the bottom portion 1 are maintained in a substantially horizontal state and the long side wall 2 is further forcibly lowered toward the bottom portion 1, the hinge block h12 is moved to the long side bank portion 1a. The inner vertical portion 1a1 and / or the outer vertical portion 1a3 are curved and deformed, and the outer vertical portion 1a3 of the long side bank portion 1a formed on the bottom portion 1 and the hook h3 protruding from the inner surface of the inner vertical portion 1a1 By extending the gap W5 between them, it passes between the outer vertical portion 1a3 of the long side bank portion 1a and the hook h3, and the long side bank formed in the bottom portion 1 as shown in FIG. It will be arranged between the outer vertical part 1a3 and the inner vertical part 1a1 of the part 1a. 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.

When the substantially horizontal long side wall 2 stands upright from the folded container in the folded state, the lower end flange 2a of the long side wall 2 is connected to the long side bank of the bottom 1 as shown in FIG. The hook h3 is placed on the horizontal portion 1a2 of the portion 1a, and the abutment block portion h12b of the hinge block h12 protrudes from the inner vertical portion 1a1 of the long side bank portion 1a formed on the bottom portion 1. A predetermined distance D1 is placed from the part h3b, and it is positioned below the collar part h3b. Therefore, as shown in FIG. 7, in the state where the long side wall 2 stands substantially vertically, when the long side wall 2 is lifted, only the long side wall 2 remains without changing the bottom portion 1 and the hinge block h12 described above. Is lifted from the bottom portion 1 by a distance D1 between the contact block portion h12b and the hook portion h3b of the hook h3.

Next, the male hinge member H2 disposed on the short side wall 3 and the female hinge member H1 formed on the short side bank portion 1b, the short side bank portion 1b of the bottom portion 1 will be described with reference to FIGS. To do.

The short side bank portion 1b of the bottom portion 1 is substantially the same in configuration as it is only lower in height than the long side side bank portion 1a, and is substantially upward from the edge of the bottom plate 1c of the bottom portion 1. An inner vertical portion 1b1 extending vertically, a horizontal portion 1b2 extending substantially horizontally outward from the upper end of the inner vertical portion 1b1, and a lower portion extending substantially parallel to the inner vertical portion 1b1 from the edge of the horizontal portion 1b2. The above-described female hinge member H1 is also formed on the short side bank portion 1b. Also, the male hinge member H2 described above is formed on the back surface of the lower flange 3a of the short side wall 3 corresponding to the female hinge member H1 disposed on the short side wall bank portion 1b of the bottom portion 1 on the back surface of the lower side flange 3a. Has been. And the female hinge member H1 arrange | positioned by the short side bank part 1b of the bottom part 1 and the male hinge member H2 arrange | positioned by the short side wall 3 are hinge-connected.

A notch recess h2 constituting the female hinge member H1 formed in the short side bank portion 1b of the bottom portion 1 extends to the bottom plate 1c of the bottom portion 1 or to the vicinity of the bottom plate 1c. In other words, the lower end h2a of the notch recess h2 is positioned flush with the bottom plate 1c of the bottom 1 or in the vicinity of the bottom plate 1c. By configuring in this way, the short side wall 3 that is first tilted out of the opposing short side walls 3 is disposed on the short side wall 3 when tilted in the direction of the bottom 1 as shown in FIG. The supporting piece h10 of the male hinge member H2 thus made does not come into contact with the lower end h2a of the notch recess h2 constituting the female hinge member H1 formed on the short side bank portion 1b, as shown in FIG. As shown, the substantially entire surface of the plate-like portion 3 b of the short side wall 3 substantially contacts the bottom plate 1 c of the bottom portion 1. As shown in FIG. 10, the present embodiment shows a case where the lower end h <b> 2 a of the notch recess h <b> 2 is flush with the bottom plate 1 c of the bottom portion 1.

Also, under the hook h3b of the hook h3 projecting from the upper end of the inner surface of the inner vertical portion 1a1 located on both sides of the notch recess h2 formed in the inner vertical portion 1b1 of the short side bank portion 1b. The height of the notch recess h2 that is positioned, in other words, the height W10 from the flange h3b of the hook h3 to the lower end h2a of the notch recess h2, is the width W7 of the support piece h10 that constitutes the male hinge member H2. The height is more than twice as high.

When the substantially horizontal short side wall 3 stands upright from the folded container in a folded state, the lower end flange 3a of the short side wall 3 is connected to the short side bank of the bottom 1 as shown in FIG. The hook h3 is placed on the horizontal part 1b2 of the part 1b and the abutment block part h12b of the hinge block h12 protrudes from the inner vertical part 1b1 of the short side bank part 1b formed on the bottom part 1 A predetermined distance D2 is placed from the part h3b, and it is located below the collar part h3b. Therefore, as shown in FIG. 13, in a state where the short side wall 3 is set up substantially vertically, when the short side wall 3 is lifted, only the short side wall 3 is left as it is, and the bottom side 1 is left as it is. Is lifted from the bottom portion 1 by a distance D2 between the contact block portion h12b and the hook portion h3b of the hook h3.

In order to fold a folding container assembled in a box shape, first, one short side wall 3 of the substantially vertical opposing short side walls 3 is tilted toward the bottom 1. During the rotation of the short side wall 3 toward the bottom 1, the lower end flange 3 a of the one short side wall 3 placed on the horizontal portion 1 b 2 of the short side bank portion 1 b is detached from the horizontal portion 1 b 2. Become. Thereafter, the supporting piece h10 of the male hinge member H2 disposed on one short side wall 3 is formed on the short side bank portion 1b while the one short side wall 3 is maintained in a substantially horizontal state. As shown in FIG. 11 and FIG. 12, the substantially entire surface of the plate-like portion 3b of one short side wall 3 is moved downward along the notch recess h2 constituting the H1, and the bottom plate 1c of the bottom portion 1 is moved. Overlay on.

Next, of the opposing substantially vertical short side walls 3, the other short side wall 3 is tilted in the direction of the bottom portion 1, and the first short side wall 3 superimposed on the bottom portion 1 is placed in a substantially horizontal state first. In the same way as the one of the short side wall 3 that is tilted first, the short side is also in the middle of the rotation of the other short side wall 3 in the substantially vertical state toward the bottom 1. The lower end flange 3a of the other short side wall 3 placed on the horizontal portion 1b2 of the side bank portion 1b is detached from the horizontal portion 1b2. Thereafter, while the other short side wall 3 is maintained in a substantially horizontal state, the support piece h10 of the male hinge member H2 disposed on the other short side wall 3 is formed on the short side bank portion 1b. As shown in FIG. 11 and FIG. 12, the other short side wall 3 is moved down along the notch recess h2 that constitutes the hinge member H1, and the other short side wall that is tilted first is moved. 3 on top of 3 in a substantially horizontal state so as to partially overlap each other.

As described above, as shown in FIGS. 3, 11, and 12, the pair of short side walls 3 that are partially tilted so as to overlap each other are tilted so as to overlap the bottom 1 in a substantially horizontal state. Therefore, the height of the folded folding container can be made lower than that of a conventional folding container in which the pair of short side walls 3 are stacked in an inclined state, and thus the folded folding container can be folded. The storage efficiency when stacking and storing containers can be improved.

After the above-described opposing short side walls 3 are brought down so as to overlap the bottom portion 1, one long side wall 2 of the substantially vertical opposing long side walls 2 is brought down in the direction of the bottom portion 1, and It overlaps on the short side wall 3 that is tilted from behind, but in the middle of the rotation of the one long side wall 2 in the substantially vertical state in the direction of the bottom 1, the horizontal side 1 a 2 of the long side bank portion 1 a The lower end flange 2a of the one long side wall 2 that has been placed is detached from the horizontal portion 1a2. Thereafter, the supporting piece h10 of the male hinge member H2 disposed on one long side wall 2 is formed on the long side bank portion 1a while the one long side wall 2 is maintained in a substantially horizontal state. As shown in FIG. 8, one long side wall 2 is moved in a substantially horizontal state on the short side wall 3 tilted from the rear as shown in FIG. Overlay on.

Next, the other long side wall 2 of the opposed substantially vertical long side walls 2 is tilted in the direction of the bottom portion 1 and is partially overlapped on the one long side wall 2 in the substantially horizontal state that has been tilted first. However, as with the above-described one long side wall 2 that has been tilted down, the long side bank portion 1a is also rotated during the rotation of the other long side wall 2 in the substantially vertical state toward the bottom 1 direction. The lower end flange 2a of the other long side wall 2 placed on the horizontal portion 1a2 is detached from the horizontal portion 1a2. Thereafter, with the other long side wall 2 maintained in a substantially horizontal state, the support piece h10 of the male hinge member H2 disposed on the other long side wall 2 is formed on the long side bank portion 1a. As shown in FIG. 3 and FIG. 8, the other long side wall 2 is moved down along the notch recess h2 constituting the hinge member H1, and the other long side wall 2 is tilted first. 2 on top of each other in a substantially horizontal state so as to partially overlap each other.

As described above, as shown in FIG. 3 and FIG. 8, the pair of long side walls 2 that are partially collapsed so as to overlap each other can be tilted so as to overlap the bottom 1 in a substantially horizontal state. Therefore, the height of the folded folding container can be made lower than that of a conventional folding container in which the pair of long side walls 2 are stacked in an inclined state, and therefore the folded folding container can be stepped. The accommodation efficiency at the time of stacking and accommodating can be improved.

As described above, the opposed short side walls 3 that are tilted first from the state assembled in a box shape can be tilted so as to partially overlap each other in a substantially horizontal state, and the opposite lengths that are tilted later The side wall 2 can also be tilted so as to partially overlap each other in a substantially horizontal state, so that the height of the folded container in the folded state can be lowered, so that the folded container in the folded state can be reduced. The accommodation efficiency at the time of stacking and accommodating can be improved.

With the above-described configuration, the height of the folded container in the folded state can be reduced. However, in the assembled state in the box shape, the long side wall 2 or the short side wall 3 is gripped and assembled into the box shape. When trying to lift the folded container, as described above, the bottom 1 remains unchanged, and only the long side wall 2 and the short side wall 3 are lifted from the bottom 1.

Next, with reference to FIGS. 9, 10, 14 and 15, the above-described means for preventing the floating from the bottom 1 of the long side wall 2 and the short side wall 3 will be described.

A corner portion through-hole 1d is formed by cutting out a corner portion formed by the inner vertical portion 1b1 and the horizontal portion 1b2 constituting the short side bank portion 1b of the bottom portion 1. In addition, the horizontal portion 1b2 or the outer vertical portion 1b3 constituting the short side bank portion 1b located in the corner portion through-hole 1d is provided with a lifting prevention protrusion 1e extending in the direction of the inner vertical portion 1b1. ing. One or a plurality of the corner portion through holes 1d and the lifting prevention projections 1e disposed in the corner portion through holes 1d are formed along the longitudinal direction of the short side bank portion 1b. In the present embodiment, an example is shown in which two lifting prevention protrusions 1e are formed at a predetermined interval in one corner through hole 1d. Further, the lower surface 1e1 of the lifting prevention projection 1e is formed as a flat surface, and the upper surface 1e2 is inclined downward from the outer vertical portion 1b3 of the short side bank portion 1b toward the inner vertical portion 1b1. It is formed on an inclined surface.

On the other hand, on the back surface of the lower end flange 3a of the short side wall 3, it corresponds to the lifting preventing protrusion 1e suspended from the horizontal portion 1b2 of the short side bank portion 1b of the bottom portion 1 described above, and the lifting preventing engagement 1e. A member 8 is suspended. The prevention engagement member 8 includes a vertical portion 8a extending downward from the back surface of the lower end flange 3a, and a horizontal engagement extending from the lower end of the vertical portion 8a toward the short side bank portion 1b of the bottom portion 1. Part 8b. In addition, 8c is a reinforcing rib that connects the lower end flange 3a, the substantially central portion of the vertical portion 8a, and the substantially central portion of the engaging portion 8b.

When the substantially horizontal short side wall 3 shown in FIG. 14 is stood substantially vertically, the engaging portion 8b of the engaging member 8 for preventing lifting that is suspended from the back surface of the lower end flange 3a of the short side wall 3 is provided. Is inserted into the corner portion through-hole 1d formed in the short side bank portion 1b of the bottom portion 1 and is substantially formed on the lower surface 1e1 of the lifting preventing projection 1e formed in the corner portion through-hole 1d. It is comprised so that it may contact | abut and arrange | position. Therefore, even when the short side wall 3 in a substantially vertical state is lifted, the engaging portion 8b of the lifting preventing engaging member 8 suspended from the back surface of the lower end flange 3a of the short side wall 3 is Since it is substantially in contact with the lower surface 1e1 of the lifting preventing projection 1e formed in the hole 1d, the short side wall 3 can be prevented from floating from the bottom 1.

When the folding container is assembled into a box shape, as described above, the fitting protrusion 7a formed on the engaging frame 7 of the short side wall 3 is formed in the through hole formed in the engaging frame 4 of the long side wall 2 4a, even if the long side wall 2 in an upright state is lifted, the fitting protrusion 7a formed on the engagement frame 7 of the short side wall 3 engages with the long side wall 2. The engaging portion 8b of the lifting-preventing engaging member 8 that is fitted to the through-hole 4a formed in the frame 4 and that is suspended from the back surface of the lower end flange 3a of the short side wall 3 is a corner-shaped through-hole. The long side wall 2 does not lift from the bottom 1 since it substantially contacts the lower surface 1e1 of the lifting preventing projection 1e formed in 1d.

In the above-described embodiment, the corner side through hole 1d and the lifting prevention protrusion 1e are formed on the short side bank portion 1b of the bottom portion 1, and the lifting prevention portion is formed on the back surface of the lower end flange 3a of the short side wall 3. Although an example in which the engaging member 8 is formed is shown, the bottom portion 1 is not provided on the short side bank portion 1b of the bottom portion 1 without providing such a corner portion through-hole 1d and a lifting prevention projection 1e. It is also possible to form the same corner portion through-hole 1d and the lifting prevention protrusion 1e on the long side bank portion 1a, and to form the lifting prevention engagement member 8 on the back surface of the lower end flange 2a of the long side wall 2. it can. Further, a corner portion through-hole 1d and a lifting prevention projection 1e are formed on both the short side bank portion 1b of the bottom portion 1 and the long side side bank portion 1a of the bottom portion 1, and the long side wall 2 and the short side wall 3 are formed. In any case, the engagement member 8 for preventing lifting can be formed.

As described above, when the substantially horizontal short side wall 3 is set to be substantially vertical, the engaging portion of the engaging member 8 for preventing lifting is usually provided vertically on the back surface of the lower end flange 3a of the short side wall 3. 8b is inserted into the corner hole 1d formed in the short side bank portion 1b of the bottom portion 1 and substantially on the lower surface 1e1 of the protrusion 1e for preventing lifting formed in the corner hole 1d. However, when the short side wall 3 in the substantially horizontal state is stood substantially vertically and the short side wall 3 is pulled too much upward, the engagement member 8 for preventing lifting is disposed. The engaging portion 8b may be placed on the upper surface 1e2 of the lifting prevention projection 1e. As described above, the upper surface 1e2 of the lifting prevention projection 1e is perpendicular to the outer side of the short side bank portion 1b. From the portion 1b3 toward the inner vertical portion 1b1, an inclined surface inclined downward Therefore, the engaging portion 8b of the lifting preventing engagement member 8 is lowered along the inclined surface. Therefore, the engaging portion 8b of the lifting preventing engagement member 8 is the short side of the bottom portion 1. It is inserted into the corner portion through-hole 1d formed in the side bank portion 1b and disposed substantially in contact with the lower surface 1e1 of the lifting prevention projection 1e formed in the corner portion through-hole 1d. become.

Further, in the above-described embodiment, in order to further reduce the height of the folded container in the folded state, the opposed short side walls 3 that are brought down first partially overlap each other so as to fall in a substantially horizontal state. In the example, the opposing long side walls 2 that are tilted later are also partially overlapped with each other and are tilted in a substantially horizontal state. Only one of the opposing long side walls 2 may be configured to partially overlap each other and fall down in a substantially horizontal state. In this case, the height of the folded container in the folded state is higher than that in the embodiment described above. However, as described above, the opposing short side wall 3 and the opposing long side wall 2 are both inclined. The height of the folded container in the folded state can be reduced compared to the case where the container is collapsed.

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 for explaining the hinge connection between the long side wall and the bottom of the folding container according to the present invention. FIG. 5 is a vertical cross-sectional view of the hinge portion just before the hinge connection for explaining the hinge connection between the long side wall and the bottom of the folding container of the present invention. FIG. 6 is a vertical cross-sectional view of a hinged hinge part for explaining the hinged connection between the long side wall and the bottom of the folding container according to the present invention. FIG. 7 is a vertical cross-sectional view of the hinge portion between the long side wall and the bottom portion of the folding container of the present invention, which is set up substantially vertically. FIG. 8 is a vertical sectional view of the hinge portion of the folding container of the present invention in the folded state. FIG. 9 is a partial perspective view of the short side wall of the folding container of the present invention. FIG. 10 is a partial perspective view of the bottom of the folding container of the present invention. FIG. 11 is a vertical cross-sectional view of the hinge portion between the short side wall and the bottom portion in the substantially horizontal state of the folding container of the present invention. FIG. 12 is also a vertical cross-sectional view of the hinge portion between the short side wall and the bottom in the substantially horizontal state of the folding container of the present invention. FIG. 13 is a vertical cross-sectional view of the hinge portion between the short side wall and the bottom portion in the substantially vertical state of the folding container of the present invention. FIG. 14 is a vertical sectional view of the vicinity of the engaging member for preventing the rising of the short side wall and the bottom portion of the folding container of the present invention in the substantially horizontal state. FIG. 15 is a vertical cross-sectional view of the vicinity of the engaging member for preventing the floating of the short side wall and the bottom of the folding container of the present invention.

Explanation of symbols

H1 ···················································································・ ・ Bottom 1e ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Projection 2 to prevent lifting ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side wall 3 ・ ・ ・ ・ ・ ・ ・ ・.... Short side wall 8 ........... An engaging member for preventing lifting

Claims (1)

In a folding container having a bottom and one opposite side wall hinged to one opposite bank portion of the bottom and another opposite side wall hinged to the other opposite bank portion of the bottom, A support piece constituting a male hinge member formed on at least one opposite side wall is configured to be movable up and down along a notch recess constituting a female hinge member formed on an inner vertical portion of a bottom bank. In addition, the side wall on which the male hinge member is formed is formed with an engagement member for preventing lifting, and is prevented from rising in the corner hole formed in the bank of the bottom. When the side wall is erected substantially vertically, an engaging part of the engaging member for preventing the lifting formed on the side wall is formed on the bank part of the bottom part. Corner While being inserted into the through hole, the engaging portion of the lift preventing engagement member, by configuring so as to contact the lower surface of prevention protrusion said floating, the floating of the said bank portion of the side wall A folding container characterized in that it is configured to prevent.

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