JP4502823B2 - 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 the bottom and the side wall by inserting the leg of the male hinge formed on the side wall into the recess of the female hinge formed on the 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 , a lifting prevention engagement block is formed in the middle of the outer surface of the support piece of the male hinge member disposed on at least one opposite side wall . In addition, a hinge block is formed at the lower end portion of the outer side surface of the support piece , below the hook constituting the female hinge member disposed on the bottom bank portion corresponding to the one opposite side wall. Forming a notch recess into which the engagement block for lifting prevention can be inserted, and when the folding container is assembled in a box shape, the engagement block for lifting prevention is The eaves portion of the serial hook, which is constituted so as to substantially abut.

  When the folding container is assembled in a box shape, the engagement block for preventing lifting is configured to substantially abut against the hook collar, so that the side wall of the folding container assembled in the box shape Even if the container is gripped and lifted, the side wall does not lift from the bottom, so that the workability of handling work such as transporting and transporting the folded container assembled in a box shape 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. In addition, an appropriate number of female hinge members H1 to be 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 long side wall, which will be described later, is formed on the back surface of the lower end flange 2a of the long side wall 2 in correspondence with the long side female hinge member H1 disposed on the long side bank portion 1a. A side male hinge member H2 is disposed. 3 is a short side wall, corresponding to a short side 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 end flange 3a of the short side wall 3 as will be described later. A side male hinge member H2 'is provided.

  By connecting the long side wall-side male hinge member H2 disposed on the lower end flange 2a of the long side wall 2 and the long side side female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1, the long side wall side 2 is hinged to the bottom 1 and is also connected to the short side-side male hinge member H2 'disposed on the lower end flange 3a of the short side wall 3 and the short side located on the short side bank 1b of the bottom 1 By connecting the female hinge member H1 ′, the short side wall 3 is hinged to the bottom portion 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, with reference to FIGS. 4 to 8, the long side female hinge member H <b> 1 will be described by taking the long side female hinge member H <b> 1 disposed on the long side bank 1 a of the bottom 1 as an example, The long side wall side male hinge member H2 disposed on the lower end flange 2a of the long side wall 2 will be described.

  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 lateral 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) W2 of the vertical hole h1. The shorter and cut-out recess h2 is located at a substantially central portion 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 long side female hinge member H1 is constituted by the vertical hole h1, the notch concave portion h2, and the hook h3 formed in the long side bank portion 1a.

  On the other hand, a long side wall-side 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 long side wall-side 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 connection 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 support pieces h10, the connecting piece h11, and the hinge block h12 having the contact block portion h12b constitute a long side wall-side male hinge member H2.

  A width W6 along the plate-like portion 2b of the long side wall 2 of the long side wall side male hinge member H2 (interval between the vertical side surfaces h12d of the pair of hinge blocks h12) is a vertical hole h1 constituting the long side side female hinge member H1. The long side male hinge member H2 formed on the back surface of the lower end flange 2a of the long side wall 2 forms a long side female hinge member H1. It is comprised so that it can insert in the vertical hole h1 formed in the long side bank part 1a.

  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 a support piece h10 that constitutes the long side wall-side male hinge member H2. The height W2 is more than twice the width W7. 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 thereafter 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 long side female hinge member H1 disposed on the long side bank portion 1a of the bottom 1 and the long side male hinge member H2 disposed on the long side wall 2 are hinge-connected. Become.

  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, using FIGS. 9 to 13, the short side wall disposed on the short side bank portion 1 b of the bottom portion 1, the short side female hinge member H <b> 1 ′ formed on the short side bank portion 1 b, and the short side wall 3. The side male hinge member H2 ′ will be described.

  Similarly to the above-described long side bank portion 1a, the short side bank portion 1b of the bottom portion 1 also has an inner vertical portion 1b1 extending substantially vertically upward from an edge portion of the bottom plate 1c of the bottom portion 1, and an inner vertical portion 1b1. The horizontal portion 1b2 extending substantially horizontally outward from the upper end of the horizontal portion, and the outer vertical portion 1b3 extending downward substantially parallel to the inner vertical portion 1b1 from the edge portion of the horizontal portion 1b2 A short side female hinge member H1 ′ similar to the long side female hinge member H1 described above is also formed on the bank portion 1b.

  The notch recessed part h2 which comprises the short side female hinge member H1 'formed in the short side bank part 1b of the bottom part 1 is extended to the bottom plate 1c of the bottom part 1, or the bottom plate 1c vicinity. 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 short side wall-side male hinge member H2 'is in contact with the lower end h2a of the notch recess h2 constituting the short side side female hinge member H1' formed on the short side bank portion 1b. As shown in FIG. 12, 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. 11, 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 1b1 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 a support piece constituting the short side wall-side male hinge member H2 ′. The height is more than twice the width W7 of h10.

  When the substantially horizontal short side wall 3 is erected substantially vertically from the folded state of the folding container, 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. 14, in a state where the short side wall 3 stands substantially vertically, when the short side wall 3 is lifted, only the short side wall 3 remains without changing the bottom portion 1 and the hinge block h <b> 12. 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 support piece h10 of the short side wall-side male hinge member H2 'disposed on the one short side wall 3 is formed on the short side bank portion 1b while maintaining the one short side wall 3 in a substantially horizontal state. As shown in FIG. 12 and FIG. 13, the plate-like portion 3 b of one short side wall 3 is roughly moved downward along the notch concave portion h 2 constituting the short side female hinge member H 1 ′. The entire surface is overlaid on the bottom plate 1 c of the bottom 1.

  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, with the other short side wall 3 maintained in a substantially horizontal state, the support piece h10 of the short side wall-side 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. 12 and FIG. 13, the other short side wall 3 is first moved by moving downward along the notch recess h <b> 2 constituting the short side female hinge member H <b> 1 ′. On one short side wall 3 that has been brought down, it is brought down so as to partially overlap each other in a substantially horizontal state.

  As described above, as shown in FIGS. 3, 12, and 13, the pair of short side walls 3 that are partially tilted so as to overlap each other are tilted in a substantially horizontal state so as to overlap the bottom 1. 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 support piece h10 of the long side wall-side male hinge member H2 disposed on the one long side wall 2 is formed on the long side bank portion 1a while maintaining the one long side wall 2 in a substantially horizontal state. As shown in FIG. 8, the long side wall 2 is moved downward along the notch concave portion h2 constituting the long side female hinge member H1, and the short side wall 3 tilted from the rear side as shown in FIG. Overlaid on the top in a substantially horizontal state.

  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, the support piece h10 of the long side wall-side male hinge member H2 disposed on the other long side wall 2 is formed on the long side bank portion 1a while the other long side wall 2 is maintained in a substantially horizontal state. As shown in FIG. 3 and FIG. 8, the other long side wall 2 is first tilted down by moving downward along the notch recess h2 constituting the long side female hinge member H1. On one of the long side walls 2, it is tilted so as to partially overlap each other in a substantially horizontal state.

  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, the means for preventing the above-described lifting from the bottom 1 of the long side wall 2 and the short side wall 3 will be described with reference to FIGS.

  In the middle of the outer surfaces of the pair of support pieces h10 constituting the short side wall-side male hinge member H2 ', a lifting prevention engagement block 8 is formed, respectively. The thickness of the lifting prevention engagement block 8 is as follows. (Height from the outer surface of the support piece h10) D3 is the thickness of the hinge block h12 formed at the lower end of the outer surface of the pair of support pieces h10 (height from the outer surface of the support piece h10) D4. It is the same as or lower than that.

  The engagement block 8 for preventing lifting is formed as an inclined surface inclined upward from the plate-like portion 3b of the short side wall 3 toward the tip 3a1 of the lower end flange 3a when the outer surface of the support piece h10 is viewed from the front. The horizontal abutting surface 8b1 that is substantially horizontal from the plate-like portion 3b of the short side wall 3 toward the tip 3a1 of the lower end flange 3a and the tip of the horizontal abutting surface 8b1 It has an upper surface portion 8b composed of a lower inclined surface 8b2 inclined downward, and further has a side surface portion 8c formed as a flat surface substantially parallel to the outer surface of the support piece h10. Furthermore, the rear end of the upper surface portion 8b of the engagement block 8 for preventing lifting and the rear end side lower surface of the lower end flange 3a are connected by a vertically long strip-shaped connecting plate 8d formed by extending the connecting piece h11 outward. Has been.

  The notch recessed part h2 side is open | released by the inner side vertical part 1b1 located in the both sides of the notch recessed part h2 which comprises the short side female hinge member H1 'formed in the short side bank part 1b of the bottom part 1. At the same time, a substantially rectangular cutout recess 9 is formed, the upper end of which reaches the flange h3b of the hook h3, into which the lifting prevention engagement block 8 can be inserted. The width of the notch recess 9 (the distance from the vertical end 1b1 ′ of the inner vertical portion 1b1 that forms the notch recess h2 to the vertical edge 9a that forms the notch recess 9) is the height of the engagement block 8 for preventing lifting. It is formed substantially the same as the thickness D3. Furthermore, a stepped portion 10 having the same width as the width of the notch recess 9 is formed in the inner vertical portion 1b1 located above the notch recess 9 by thinning the inner vertical portion 1b1.

  When the substantially horizontal short side wall 3 shown in FIG. 12 is erected substantially vertically, a short side wall-side male hinge member H2 ′ disposed on the back surface of the lower end flange 3a of the short side wall 3 is configured. The lifting prevention engagement blocks 8 formed on the pair of support pieces h10 are inserted into the notch recesses 9 formed on the inner vertical portions 1b1 located on both sides of the above-described notch recess h2, and FIG. As shown in the figure, the horizontal contact surface 8b1 constituting the upper surface portion 8b of the lifting prevention engagement block 8 is formed on the upper end portion of the inner surface of the inner vertical portion 1a1 constituting the short side bank portion 1b of the bottom portion 1. The hook h3 is formed so as to be substantially in contact with the flange h3b. Therefore, even if the short side wall 3 in a substantially vertical state is lifted, the lifting prevention engagement block 8 is substantially in contact with the flange h3b of the hook h3. It is possible to prevent the air from rising 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. A lift-preventing engagement member formed in the pair of support pieces h10 that are fitted in the through holes 4a formed in the frame 4 and that constitute the short side wall-side male hinge member H2 'disposed in the short side wall 3. Since the joint block 8 is substantially in contact with the flange h3b of the hook h3 formed on the inner surface of the inner vertical portion 1b1 constituting the short side bank portion 1b of the bottom portion 1, the long side wall 2 has a bottom portion. There is no such thing as rising from one.

  As described above, when the folding container is assembled into a box shape, it is positioned on both sides of the notch recess h2 constituting the short side female hinge member H1 'disposed on the short side bank portion 1b of the bottom portion 1. A vertically long strip-shaped connecting plate that connects the above-described lifting prevention engagement block 8 and the lower end flange 3a of the short side wall 3 to the stepped portion 10 positioned above the notch recess 9 formed in the inner vertical portion 1b1. 8d is configured to be fitted, and the plate-like portion 3b of the short side wall 3 and the short side wall-side male hinge member H2 ′ are thus fitted by fitting the band-shaped connecting plate 8d to the stepped portion 10. The connecting piece h11, the band-shaped connecting plate 8d, and the inner vertical portion 1b1 of the short side bank portion 1b of the bottom portion 1 are configured to be substantially flush with each other. By comprising in this way, when taking out the articles | goods accommodated in the folding container assembled in the box shape, it can prevent that an article | item is caught.

  Further, since the hinge block h12 and the lifting prevention engagement block 8 are formed on the short side wall-side male hinge member H2 ′, the hinge block h12 is responsible for the displacement of the substantially upright short side wall 3 in the front-rear direction. However, since the upward lifting of the short side wall 3 is configured to be shared by the lifting preventing engagement block 8, the short side wall 3 has a hinge structure that is difficult to be separated from the bottom portion 1. The hinge connection between the side wall 3 and the bottom 1 can be reliably performed.

  Further, since the short side wall side male hinge member H2 ′ has a simple structure, the structure of the short side side female hinge member H1 ′ is also simplified, and accordingly, the short side to the short side bank portion 1b of the bottom portion 1 is simplified. Since the installation space for the female hinge member H1 ′ is small, it is possible to suppress a decrease in strength and rigidity of the bottom portion 1.

  In the above-described embodiment, the inner vertical portion 1b1 located on both sides of the notch recess h2 of the short-side female hinge member H1 ′ disposed on the short-side bank portion 1b of the bottom portion 1 is used to prevent lifting. A substantially rectangular cutout recess 9 into which the engagement block 8 can be inserted is formed, and is prevented from floating on the outer surface of the pair of support pieces h10 of the short side wall-side male hinge member H2 'disposed on the short side wall 3. An example in which the engagement block 8 is formed is shown, but the inner vertical portion located on both sides of the notch recess h2 of the long side female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 is shown. A substantially rectangular cutout recess 9 into which a lifting prevention engagement block 8 can be inserted is formed in 1a1, and outside the pair of support pieces h10 of the short side wall-side male hinge member H2 disposed on the long side wall 2. Engagement block 8 for preventing lifting on the side Form can also be.

  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 and the like immediately 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 and the like for explaining the hinged connection between the long side wall and the bottom of the folding container of the present invention. FIG. 7 is a vertical cross-sectional view of a hinge portion and the like of a long side wall and a bottom that are substantially vertically set up in the folding container of the present invention. FIG. 8 is a vertical cross-sectional view of the hinge portion and the like of the folding container of the present invention in a folded state. FIG. 9 is a partial perspective view of the short side wall seen from the outer surface side of the folding container of the present invention. FIG. 10 is a partial perspective view of the short side wall as viewed from the inner surface side of the folding container of the present invention. FIG. 11 is a partial perspective view of the bottom of the folding container of the present invention. FIG. 12 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. 13 is also 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. 14 is a vertical sectional view of the hinge portion between the short side wall and the bottom portion in a substantially vertical state of the folding container of the present invention.

Explanation of symbols

H1 ················· Long-side female hinge member H2 ··············· Long-side male hinge member H1 ' .... Short side female hinge member H2 '... Short side male hinge member 1 ... Bottom 2 ... Long side wall 3 ... Short side wall 8 ... ... Engagement blocks for preventing lifting

Claims (1)

In a folding container having a bottom portion and one opposite side wall hinged to the opposite one bank portion of the bottom portion and another opposite side wall hinged to the opposite opposite bank portion of the bottom portion, In the middle of the outer surface of the support piece of the male hinge member disposed on at least one of the opposite side walls, an engagement block for preventing lifting is formed, and at the lower end of the outer surface of the support piece, The hinge block is formed, and the engagement block for preventing the lifting can be inserted below the hook constituting the female hinge member disposed on the bank portion at the bottom corresponding to the one opposite side wall. When the cutout recess is formed and the folding container is assembled in a box shape, the lifting-preventing engagement block is substantially in contact with the hook flange. Container folding, characterized in that it is configured.

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