JP2011031958A - Foldable container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable container capable of preventing a lateral slip of a load and controlling a folding height. <P>SOLUTION: The container 10 includes a pair of spring side walls 40 and a pair of foldable side walls 30 between a bottom base 11 and an upper frame 50. When the foldable side walls 30 are two-folded and overlaid on the bottom base 11 while the spring side walls 40 are rotated around the upper end as the center and folded inward of the upper frame 50, the container 10 is brought into a folded state. A side-wall lower recess 35B is recessively formed at a position of the foldable side wall 30 opposite to the bottom base 11 in the folded state, and the upper end of a protrusive wall 15 of the bottom surface protruding upward from the bottom base 11 is accommodated in the side-wall lower recess 35B. Accordingly, it is possible to control the folding height of the container 10 compared with a prior art. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a folding container having a rectangular parallelepiped box shape as a whole and having a pair of jumping side walls and a pair of bent side walls between a bottom base constituting the bottom and an upper frame constituting the top. The folding side wall is folded about the upper end and is folded into the upper frame, and then the folded side wall is folded inward at the center in the vertical direction and folded on the bottom base. Concerning containers.

  Conventionally, a folding container of this type is known in which the bottom surface is divided into a plurality of luggage placement areas by a bottom face protruding wall, and lateral displacement of the luggage placed on each luggage placement area is prevented by the bottom face protruding wall (for example, , See Patent Document 1).

Japanese Utility Model Publication No. 6-76047 (FIGS. 3 and 7)

  However, the folded container described above has a folded side wall overlaid on the bottom protruding wall when in the folded state. Therefore, compared to a folded container having no bottom protruding wall (hereinafter referred to as “folding”). Height ”). For this reason, when stacking multiple folding containers with bottom protruding walls, it becomes higher than when the same number of folding containers without bottom protruding walls are stacked, and the stacked state becomes unstable or the height is restricted. There were problems such as a decrease in the number of items that could be stored in a warehouse.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a folding container that can prevent a lateral shift of a load and can suppress a folding height.

  In order to achieve the above object, the folding container according to the invention of claim 1 has a rectangular parallelepiped box shape as a whole, and a pair of the container is formed between a bottom base constituting the bottom and an upper frame constituting the top. The upper side wall and the pair of bent side walls are arranged opposite to each other, and the upper side wall of the upper side wall is pivotally connected to the upper frame and is folded inside the upper frame. , In a folding container in which both ends in the vertical direction are rotatably connected to the upper frame and the bottom base and are folded in two at the center in the vertical direction and folded on the bottom base, projecting from the upper surface of the bottom base, A bottom protruding wall that divides the upper surface of the bottom base into a plurality of luggage placement areas, and a recessed or penetrating formed in a position of the folded side wall that faces the bottom base in a folded state. Accepting interference times Characterized in place and the parts provided.

  The invention according to claim 2 is the folding container according to claim 1, wherein the lower frame projecting from the entire edge of the inner surface of the folded side wall of the folded side wall, which is located below the center in the vertical direction. It is characterized in that it has a shape reinforcing wall, and the side wall lower recess surrounded by the lower frame reinforcing wall is used as an interference avoiding portion.

  According to a third aspect of the present invention, in the folding container according to the second aspect, an upper frame-shaped reinforcement projecting from the entire edge of the outer surface of the folded upper wall that constitutes the upper side of the vertical center of the folded side walls. A wall is provided, and the back surface of the side wall upper concave portion surrounded by the upper frame-shaped reinforcing wall of the bent upper wall is made substantially flat so that it is flush with the tip surface of the lower frame-shaped reinforcing wall or the lower frame-shaped reinforcing wall. It is characterized by being arranged inside the tip surface.

  According to a fourth aspect of the present invention, in the folding container according to any one of the first to third aspects, the bottom projecting wall extends in a direction opposite to the pair of jumping side walls, and the bottom projecting wall extends in the longitudinal direction. From the middle part, a mountain-shaped protrusion protruding in a mountain shape so as to deviate from the rotation region of the pair of jumping side walls protrudes upward, and the mountain-shaped protrusion is received by the interference avoiding part. However, it has characteristics.

[Inventions of Claims 1 and 2]
In the folding container according to the first aspect, since the upper surface of the bottom base is divided into a plurality of luggage placement areas by the bottom face protruding wall, it is possible to prevent lateral displacement of the luggage arranged on each luggage placement area by the bottom face protruding wall. . When the folding container is folded, at least the upper end portion of the bottom protruding wall is received in the interference avoiding portion on the folding side wall, and accordingly, the folding height can be suppressed as compared with the conventional case. That is, according to the folding container of the present invention, it is possible to prevent the lateral displacement of the luggage and to suppress the folding height as compared with the conventional case.

  Specifically, the interference avoiding unit may be a groove or a hole (including a slit) formed in the bent side wall corresponding to the bottom protruding wall. Further, as in the invention of claim 2, a lower frame-shaped reinforcing wall protruding from the entire edge portion of the inner surface of the bent lower wall constituting the lower portion of the bent side wall is provided, and the lower frame shape is provided. It is good also considering the side wall lower side recessed part enclosed by the reinforcement wall as an interference avoidance part.

[Invention of claim 3]
According to the configuration of the third aspect, the flat inner surface of the bent upper wall can be applied to the upper end portion of the luggage arranged on the luggage arrangement area and stabilized. If a plurality of luggage placement areas are arranged along the inner surface of the folded upper wall, the plurality of luggage arranged on the plurality of luggage placement areas are aligned along the inner surface of the folded upper wall. Can be made.

[Invention of claim 4]
According to the configuration of the fourth aspect, it is possible to make the mountain-shaped protruding portion of the bottom protruding wall higher while avoiding interference with the jumping side wall, and to stabilize the load.

The perspective view of the assembly state of the container which concerns on one Embodiment of this invention Perspective view of a container containing luggage A perspective view of a part of a container containing luggage Perspective view of container in the middle of being folded Perspective view of the container in the folded state FIG. 1 is a side sectional view of a container taken along a line AA in FIG. FIG. 1 is a side sectional view of a container taken along the line BB in FIG. The perspective view which looked at the bending side wall from the inner surface side The perspective view which looked at the bent side wall from the outer surface side Side cross-sectional view of a part of the assembled container Side cross-sectional view of folded container Side sectional view of a part of the folded container Side cross-sectional view of folded container

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the folding container 10 (hereinafter simply referred to as “container 10”) of the present embodiment has a rectangular parallelepiped box shape as a whole, and a bottom base 11 constituting the bottom and an upper frame constituting the top. A pair of bent side walls 30, 30 and jumping side walls 40, 40 are provided so as to face each other.

  The jumping side wall 40 has a rectangular plate shape and includes bulging reinforcement portions 42 and 42 extending in the vertical direction along both side edge portions. Each bulging reinforcing portion 42 bulges outward with respect to the entire jumping side wall 40, and the back side of the bulging reinforcing portion 42 is recessed in a groove shape with respect to the entire inner surface of the jumping side wall 40. The inside of the groove-like depression is partitioned into a plurality of regions by ribs 42L, and through holes 42Z are formed in the inner surface of the groove-like depressions for each region partitioned by the ribs 42L. Further, a laterally elongated handle hole 40 </ b> H is formed through the central portion in the lateral direction at a position near the upper end of the jumping side wall 40. Furthermore, oval through-holes 40Z are formed in a plurality of rows in the vertical and horizontal directions on the whole of the jumping side wall 40 except for the bulging reinforcing portions 42, 42, whereby the jumping side wall 40 has a mesh structure. Yes.

  As shown in FIG. 2, the bent side wall 30 is divided into a bent upper wall 31 and a bent lower wall 35 at the center in the vertical direction, and the lower end portion of the bent upper wall 31 and the bent lower wall 35 are divided. Are connected to the upper end of the side wall by a side wall hinge 30A.

  As shown in FIG. 9, the bent upper wall 31 is formed in a horizontally-long rectangular plate shape and includes bulging reinforcing portions 34 and 34 extending in the vertical direction along both side edge portions. Each bulging reinforcing portion 34 bulges outward with respect to the entire bent upper wall 31, and as shown in FIG. 8, the back side of the bulging reinforcing portion 34 has a groove shape with respect to the entire bent upper wall 31. I am depressed. The inside of the groove-like depressed portion is partitioned into a plurality of regions by ribs 34L, and through holes 34Z are formed in the inner surface of the groove-like depressed portion for each region partitioned by the ribs 34L.

  As shown in FIG. 9, an upper edge reinforcing beam 32 </ b> A and a lower edge reinforcing beam 32 </ b> B are formed to protrude from the upper edge and the lower edge on the outer surface of the bent upper wall 31, and a pair of bulge reinforcing parts 34. , 34. An upper frame-shaped reinforcing wall 31U according to the present invention is constituted by the bulging reinforcing portions 34, 34 and the upper and lower edge reinforcing beams 32A, 32B, and is folded by being surrounded by the upper frame-shaped reinforcing wall 31U. A portion recessed from the entire outer surface of the curved upper wall 31 is a side wall upper side recess 31B according to the present invention.

  A pair of central reinforcing ribs 33 project from the outer surface of the main plate portion 32 located on the back side of the side wall upper side recess 31 </ b> B in the bent upper wall 31. The pair of central reinforcing ribs 33, 33 are arranged at positions that divide the main plate portion 32 into three equal parts in the vertical direction and extend in the horizontal direction. Further, the protruding amount of the central reinforcing rib 33 from the main plate portion 32 is smaller than the protruding amount of the upper frame reinforcing wall 31U.

  In the region above the upper central reinforcing rib 33 in the main plate portion 32, a horizontally elongated handle hole 31H is formed through the center in the longitudinal direction. Further, in the main plate portion 32, a plurality of oval through holes 31Z are formed in a horizontal row for each area partitioned by the central reinforcing ribs 33, 33, whereby the bent upper wall 31 also has a mesh structure. Yes.

  As shown in FIG. 8, the bent lower wall 35 is a plate having a horizontally long rectangular shape, and is provided with vertically long reinforcing portions 38, 38 at both side edges of the inner surface thereof. Each of the vertically long reinforcing portions 38 has a structure in which a pair of vertical ribs 38A and 38A extending over the entire vertical direction of the bent lower wall 35 are connected by a plurality of horizontal ribs 38B. Further, a through hole 38Z is formed in the inner surface of each recess surrounded by the vertical rib 38A and the horizontal rib 38B in the bent lower wall 35.

  On the inner surface of the bent lower wall 35, an upper edge reinforcing beam 36A and a lower edge reinforcing beam 36B are formed to protrude from the upper edge portion and the lower edge portion, and are interposed between a pair of vertically long reinforcing portions 38, 38. ing. The vertically elongated reinforcing portions 38, 38 and the upper and lower edge reinforcing beams 36A, 36B constitute a lower frame-shaped reinforcing wall 35U according to the present invention, and are surrounded by the lower frame-shaped reinforcing wall 35U. A portion recessed from the entire inner surface of the bent lower wall 35 is a side wall lower concave portion 35B (corresponding to the “interference avoiding portion” of the present invention) according to the present invention. That is, in this embodiment, as shown in comparison with FIG. 8 and FIG. 9, the bent lower wall 35 is provided with a sidewall lower recess 35 </ b> B on the inner surface, while the bent upper wall 31 is formed on the sidewall upper recess 31 </ b> B on the outer surface. It has a structure with. As shown in FIG. 10, the substantially flat load supporting surface 31T corresponding to the back surface of the portion surrounded by the side wall upper concave portion 31B is formed on the front end surface and the surface of the lower frame-shaped reinforcing wall 35U of the bent lower wall 35. It is one.

  As shown in FIG. 8, a pair of central reinforcing ribs 37 and 37 protrude from the inner surface of the main plate portion 36 surrounded by the lower frame-shaped reinforcing wall 35 </ b> U in the bent lower wall 35. The pair of central reinforcing ribs 37, 37 extend in the horizontal direction and divide the main plate portion 36 into three regions in the vertical direction. Moreover, the area | region divided by the center reinforcement ribs 37 and 37 is wider in the lower area | region by the upper area | region. Further, the main plate portion 36 is formed with a plurality of oblong holes 35Z arranged in one horizontal row or two horizontal rows for each region divided by the central reinforcing ribs 37, whereby the bent lower wall 35 is also mesh-structured. It has become. Further, the protruding amount of the central reinforcing rib 37 from the main plate portion 36 is smaller than the protruding amount of the lower frame-shaped reinforcing wall 35U.

  As shown in FIG. 4, the side wall hinge 30A for connecting the bent upper wall 31 and the bent lower wall 35 is as shown in FIG. 4 from the state in which both the bent upper wall 31 and the bent lower wall 35 stand vertically. Are allowed to bend inward (bends in which the outer surfaces of the bent upper wall 31 and the bent lower wall 35 face each other) and are not allowed to be bent outward. Further, as shown in FIG. 2, the locking protrusions 35 </ b> K protrude from both ends in the longitudinal direction of the bent lower wall 35 toward the jumping side wall 40, and the longitudinal direction of the bent upper wall 31 is the same as this. The locking protrusions 31 </ b> K protrude from the both end portions toward the jumping side wall 40. On the other hand, as shown in FIGS. 1 and 2, locking concave portions 40K and 40K are formed at two positions in the vertical direction on the side edge portion on the outer surface of each bulging reinforcing portion 42, and these locking concave portions 40K. , 40K engage with the locking protrusions 31K, 35K, and the side edges of the jumping side wall 40 and the bent side wall 30 are coupled to each other.

  As shown in FIG. 1, the upper frame 50 has a rectangular shape as a whole, and the cross-sectional shapes of the long side portion 52 and the short side portion 53 are grooved as shown in FIGS. 3, 6, and 7. It has a structure. In addition, in the pair of frame side walls 50A and 50B facing each other in the groove structure, the outer frame side wall 50A extends longer than the inner frame side wall 50B. Then, as shown in FIG. 6, the upper end of the bent upper wall 31 is directed to the inner surface of the portion of the long side portion 52 of the upper frame 50 that protrudes downward from the inner frame side wall 50 </ b> B. The upper frame 50 is pivotally connected. Similarly, the upper end portion of the jumping side wall 40 is rotatably connected to each short side portion 53 of the upper frame 50. Further, the rotation center of the jumping side wall 40 in the upper frame 50 is disposed above the rotation center of the bent side wall 30.

  As shown in FIG. 1, both end portions of each long side portion 52 of the upper frame 50 are recessed on the outer surface, and the rotation support shaft of the jumping side wall 40 protrudes from the inner surface of the recessed portion. . Further, at the center of each short side portion 53 of the upper frame 50, a chamfered portion 59 for belt is formed by obliquely cutting the corner portion between the upper surface and the outer surface. Further, a belt chamfered portion 19 is also formed at the lower end corner of the bottom base 11 described below so as to correspond to the belt chamfered portion 59. Further, as shown in FIG. 2, at the center of each short side portion 53 of the upper frame 50, a handle portion 50 </ b> H is formed by denting the lower end surface upward.

  As shown in FIG. 1, the bottom base 11 has a rectangular bottom wall 14, and a base protrusion 18 projects from the lower surface of the bottom wall 14 as shown in FIG. 6. When the containers 10 are stacked, the pedestal protrusion 18 of the upper container 10 is fitted into the upper surface opening of the lower container 10, thereby preventing lateral displacement between the containers 10 and 10. The base protrusion 18 has a lattice-shaped rib structure protruding from the lower surface of the bottom wall 14.

  Bottom side walls 12 and 13 stand up from the upper edge of the bottom wall 14 of the bottom base 11. A plurality of through holes 11Z are formed in the bottom wall 14, the bottom side wall 12, and the bottom side wall 13, whereby the bottom base 11 also has a mesh structure.

  As shown in FIG. 7, a pair of bottom side walls 13 and 13 disposed in the short side portion of the bottom base 11 among the bottom side walls 12 and 13 are bent outwardly in a crank shape at a position near the upper end, thereby forming a step portion 13D. have. Similarly, the pair of bottom side walls 12 and 12 arranged in the long side portion of the bottom base 11 also has a step portion 12D at a position closer to the upper end as shown in FIG. Note that the upper surface of the stepped portion 13D in the bottom side wall 13 on the short side is positioned slightly below the upper surface of the stepped portion 12D in the bottom side wall 12 on the long side.

  As shown in FIG. 7, the lower end portion of the jumping side wall 40 can come into contact with the inner surface on the upper end side of the step portion 13 </ b> D in the bottom side wall 13 on the short side. Thereby, the jumping side wall 40 is positioned in the standing posture. Then, the jumping side wall 40 pivots inward from the standing posture and is folded into the upper frame 50 as shown in FIG. In this state, in the upper frame 50, the tips of the jumping side walls 40, 40 are superposed one above the other.

  As shown in FIG. 6, the lower end portion of the bent side wall 30 is disposed on the upper side of the stepped portion 12 </ b> D in the bottom side wall 12 on the long side, and is rotatably connected to the bottom base 11. Then, with the raised side walls 40, 40 housed in the upper frame 50, the side wall hinges 30A, 30A in the pair of folded side walls 30, 30 are folded so as to approach each other as shown in FIG. When the side walls 30 are folded in half, the bent upper wall 31 of the bent side wall 30 is accommodated below the jumping side wall 40 in the upper frame 50 as shown in FIG. The bent lower wall 35 is accommodated inside the upper end of the bottom base 11. And as shown in FIG. 5, the lower end surface of the top frame 50 and the upper end surface of the bottom part base 11 are joined, and the container 10 will be in a folding state. When the container 10 is folded, the folded upper wall 31 and the folded lower wall 35 are in a horizontal posture as shown in FIG. 12, and the inner surface of the folded lower wall 35 is the bottom side wall on the short side. The upper surface of the 12 step portions 12D is disposed at substantially the same height.

  As shown in FIG. 1, a plurality of rib-like bottom surface protruding walls 15 are formed in a portion surrounded by the bottom side walls 12 and 13 on the upper surface of the bottom wall 14. As shown in FIG. 1, the plurality of bottom surface protruding walls 15 extend between the pair of bottom side walls 13 and 13 in the long side direction of the bottom base 11, and as shown in FIG. Are arranged at positions that equally divide between the pair of bottom side walls 12 and 12 in the short side direction, and the upper surface of the bottom wall 14 is divided into a plurality of strip-shaped luggage arrangement regions R1. Further, as shown in FIG. 1, protrusions 16 extending in the vertical direction are formed on the side surfaces of the bottom protruding walls 15 at a plurality of positions in the longitudinal direction.

  Specifically, in the present embodiment, as shown in FIG. 6, nine bottom face protruding walls 15 are provided in total, and a pair of bottom face protruding walls 15, 15 arranged on both sides of the center are the other parts. The shapes of the bottom protruding wall 15 and the upper end are different. In the case of distinguishing these, hereinafter, the bottom projecting walls 15 on both sides in the center are referred to as “second bottom projecting walls 15B”, and the other bottom projecting walls 15 are referred to as “first bottom projecting walls 15A”.

  As shown in FIG. 1, the upper surface of the second bottom surface protruding wall 15B is flat over the entire surface and is substantially flush with the upper surface of the step portion 13D of the bottom side wall 13 (see FIG. 6). . On the other hand, as shown in FIG. 7, a trapezoidal mountain-shaped protrusion 15 </ b> T protrudes upward from an intermediate portion in the longitudinal direction on the upper surface of the first bottom surface protruding wall 15 </ b> A. The mountain-shaped protrusion 15T has a mountain shape (trapezoidal shape) so as to be out of the arcuate rotation region of the pair of jumping side walls 40, 40. In addition, the rotation locus | trajectory of the lower end part of the jumping side walls 40 and 40 is shown as code | symbol 40R and 40R in FIG. Then, both end portions of the upper surface of the first bottom surface protruding wall 15A outside the mountain-shaped protrusion 15T are arranged substantially flush with the upper surface of the step portion 13D, and the upper surface 15U of the mountain-shaped protrusion 15T is the upper end surface of the bottom side wall 13. It is arranged substantially flush with 13U. Further, as shown in FIG. 7, the mountain-shaped protrusion 15 </ b> T is within the range where the side wall lower side recess 35 </ b> B in the bent lower wall 35 of the bent side wall 30 is formed in the longitudinal direction of the first bottom surface protruding wall 15 </ b> A. Has been placed.

  Here, when the container 10 is in the folded state, as shown in FIG. 11, the inner surface of the bent lower wall 35 of the bent side wall 30 is flush with the stepped portion 12D of the bottom side wall 12 as described above. On the other hand, the upper end portion of the mountain-shaped protrusion 15T is located above the inner surface of the bent lower wall 35. And the upper end part of 15 A of 1st bottom face protruding walls arrange | positioned in the center among several bottom face protruding walls 15 is located between both bending side walls 30 and 30, and interference with the bending side walls 30 is avoided, The upper end portions of the remaining first bottom surface projecting walls 15 </ b> A (specifically, the upper end portions of the mountain-shaped projecting portions 15 </ b> T) are received in the side wall lower side recesses 35 </ b> B of the respective folded lower walls 35, so Interference with is avoided. Specifically, in the side wall lower side recess 35B, the upper end portion of each first bottom surface protruding wall 15A is abutted at a position deviated from the central reinforcing ribs 37, 37 in the main plate portion 36 at the back of the side wall lower side recess 35B. It becomes a state. The second bottom surface protruding wall 15B is located in the vicinity of the connecting portion of the bent upper wall 31 and the bent lower wall 35 in the bent side wall 30, but does not have the mountain-shaped protruding portion 15T. It does not interfere with the curved side wall 30.

  This completes the description of the configuration of the container 10 of the present embodiment. Next, the effect of this container 10 is demonstrated. As an example of the plurality of packages accommodated in the container 10 of the present embodiment, the plurality of packages W shown in FIGS. 2 and 3 have a thickness corresponding to the width of each package arrangement region R1 (see FIG. 3). It has a flat rectangular parallelepiped shape having a length substantially the same as the interval between the jumping side walls 40 and 40 and slightly lower than the depth of the container 10.

  As shown in FIG. 3, these loads W are accommodated in the container 10 so as to be inserted between the bottom protruding walls 15 and between the bottom protruding walls 15 and the bottom side wall 12 of the bottom base 11. Then, the protrusion 16 (refer FIG. 1) with which each bottom face protruding wall 15 was equipped bites into the load W, each load W is hold | maintained in the state which opened the clearance gap between each other, and a lateral shift is also prevented. Here, in the container 10 of the present embodiment, the plurality of first bottom surface protruding walls 15A included in the bottom surface protruding wall 15 group are provided with the mountain-shaped protrusions 15T, and the load W is stabilized. In particular, the load support surfaces 31T provided on the bent upper wall 31 of the bent side wall 30 are addressed to the upper ends of the load W at both ends, so that the stability is increased. Thereby, for example, if a cushioning material or the like (not shown) is sandwiched between the upper ends of the luggage W, the upper end of the entire luggage W group can be stabilized.

  The container 10 can be folded when not in use. For this purpose, the jumping side walls 40 and 40 are pressed to the inside of the container 10 in a state where the luggage W is taken out from the container 10. Then, the engagement between the locking recesses 40K, 40K of the jumping side wall 40 and the locking protrusions 31K, 35K of the bent side wall 30 is released, and each of the jumping side walls 40 rotates around the upper end and moves upward. The frame 50 is folded. At this time, the lower end portion of the jumping side wall 40 passes through the vicinity of the inclined surface 15S in the mountain-shaped protrusion 15T of the bottom surface protruding wall 15, but does not interfere with the mountain-shaped protrusion 15T.

  When the jumping side walls 40, 40 are accommodated in the upper frame 50, as shown in FIG. 4, the side wall hinges 30A of the bent side walls 30 are pressed inward from the outside to fold the bent side walls 30 in half. It arrange | positions on the bottom part base 11, and as shown in FIG. 5, the lower surface of the top frame 50 and the upper surface of the bottom part base 11 are joined. Thereby, the container 10 is in a folded state. At this time, since the upper end portion of the mountain-shaped protrusion 15T of the first bottom surface protruding wall 15A is received in the side wall lower recess 35B of the bent side wall 30 (see FIG. 12), the container 10 is folded accordingly. The height can be suppressed.

  Thus, according to the container 10 of this embodiment, the lateral displacement of the luggage W can be prevented and the folding height can be suppressed as compared with the conventional case. Further, the stability of the luggage W can be improved by partially raising the first bottom surface protruding wall 15A by the mountain-shaped protrusion 15T while avoiding interference between the jumping side wall 40 and the first bottom surface protruding wall 15A. .

  In order to put the folded container 10 into an assembled state, it is only necessary to spread the space between the upper frame 50 and the bottom base 11 by placing a hand on the handle 50H of the upper frame 50. Further, if the belt is wound around the folded container 10 along the belt chamfers 19 and 59, the container 10 can be maintained in the folded state. Furthermore, there is a space for inserting a finger between the belts 10 and 10 stacked in a folded state by the belt chamfer 19 of the upper container 10 and the belt chamfer 59 of the lower container 10. Since it is formed, the upper and lower containers 10, 10 can be easily separated by inserting a finger into the space.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) The side wall lower side recess 35 </ b> B corresponding to the “interference avoiding part” of the present invention is a recess that receives the upper ends of the plurality of bottom surface protruding walls 15. "May be a groove or a hole (including a slit) formed on the bent side wall and corresponding to each bottom protruding wall.

  (2) In the above embodiment, the portion corresponding to the “interference avoiding portion” of the present invention (the side wall lower side recess 35B) is formed only in the bent lower wall 35 of the bent side wall 30; You may provide the site | part corresponded to the "interference avoidance part" of this invention in both a bending lower wall and a bending upper wall. Specifically, the bent lower wall is provided with a through-hole through which the bottom protruding wall is inserted, and the bent upper wall is capable of receiving the bottom protruding wall that has passed through the through-hole of the bent lower wall. A through hole may be provided.

  (3) The bottom surface protruding wall 15 has a rib shape extending in one direction on the bottom base 11, but the “bottom surface protruding wall” according to the present invention has a lattice shape extending in two directions on the bottom base. It may be a rib or a columnar or cylindrical protrusion.

  (4) In the above-described embodiment, the plurality of bottom surface protruding walls 15 are disposed in parallel with the load supporting surface 31T of the bent upper wall 31, but the plurality of bottom surface protruding walls 15 are disposed in a direction orthogonal to the load supporting surface 31T. May be. Then, a plurality of luggage can be aligned along the luggage support surface 31T.

DESCRIPTION OF SYMBOLS 10 Folding container 11 Bottom base 15 Bottom protrusion wall 15T Angle protrusion 30 Bending side wall 31 Bending upper wall 31B Side wall upper side recess 31T Luggage support surface 31U Upper frame-shaped reinforcing wall 35 Bending lower wall 35B Side wall lower side recess (interference avoidance) Part)
35U Lower frame-shaped reinforcing wall 40 Jumping side wall 50 Upper frame R1 Luggage placement area W Luggage

Claims (4)

The whole has a rectangular parallelepiped box shape, and a pair of jumping side walls and a pair of bent side walls are arranged oppositely between a bottom base constituting the bottom and an upper frame constituting the upper part, respectively. The upper side wall is pivotally connected to the upper frame at the upper end and is folded inside the upper frame, while the folded side wall has both vertical ends at the upper frame and the bottom base. In a folding container that is pivotably connected and folded in the middle in the vertical direction and folded on the bottom base,
A bottom protruding wall that protrudes from the upper surface of the bottom base and divides the upper surface of the bottom base into a plurality of luggage placement regions;
The folding side wall is provided with an interference avoiding portion that is recessed or formed in a position facing the bottom base in a folded state, and that receives at least the upper end portion of the bottom protruding wall. Folding container.   Of the bent side walls, a bent lower wall constituting the lower side from the center in the vertical direction is provided with a lower frame-shaped reinforcing wall protruding from the entire edge of the inner surface, and is surrounded by the lower frame-shaped reinforcing wall. The folding container according to claim 1, wherein the side wall lower side concave portion is used as the interference avoidance portion.   An upper frame-shaped reinforcing wall that protrudes from the entire edge of the outer surface of the bent upper wall that constitutes the upper side from the center in the vertical direction among the bent side walls is provided, and the upper frame-shaped reinforcement of the bent upper wall The back surface of the upper side concave portion of the side wall surrounded by the wall is substantially flat, and is arranged flush with the front end surface of the lower frame-shaped reinforcing wall or inside the front end surface of the lower frame-shaped reinforcing wall. The folding container according to claim 2.   The bottom protruding wall extends in a direction opposite to the pair of jumping side walls, and has a mountain shape so as to deviate from a rotation region of the pair of jumping side walls from a longitudinal intermediate portion of the bottom protruding wall. 4. The device according to claim 1, wherein the chevron-shaped projecting portion is formed so as to project upward, and the chevron-shaped projecting portion is received by the interference avoiding unit. 5. Folding container.

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