JP2017039507A - container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container capable of stabilizing a stacked state via a pallet. SOLUTION: In a container 10 of the present invention, when a container 10 is in a folded state, a pair of outer load receiving portions 35 extending in the vertical direction on both side portions of an outer surface 30G of a second side wall 30 have a corner protrusion 35E. As shown in FIG. 22, the side wall side protrusions 36 and the side pedestal 30E extending in the vertical direction on both sides of the inner side surface of the second side wall 30 are located at the uppermost position flush with the upper surface 12E of the 12A. , The load received by the outer load receiving portion 35 can be received by abutting on the outer edge portion of the bottom wall 11. As a result, when the folded containers 10 are stacked via the pallet 80, the lower container 10 comes into contact with the lower surface of the upper pallet 80 in a well-balanced manner. [Selection diagram] FIG. 22

Description

  The present invention relates to a foldable container.

  Conventionally, this type of container is known in which a pair of side walls facing each other can be folded on a bottom wall and then the remaining pair of side walls can be folded into a folded state (for example, , See Patent Document 1)

Japanese Patent No. 4125193 (FIGS. 2 and 3)

  By the way, containers that do not contain luggage may be folded, arranged in a plurality on a pallet, and stacked through the pallet. However, in the conventional container described above, the pair of bank portions protruding from the bottom wall protrude upward most in the folded state, and the entire side wall is located below the upper surface of the bank portion. Cannot be brought into contact with the lower container in a well-balanced manner, and the stacked state may become unstable.

  This invention is made | formed in view of the said situation, and it aims at provision of the container which can stabilize the stacking state via a pallet conventionally.

  In order to achieve the above object, the invention according to claim 1, wherein the pair of first side walls that are pivotally connected to the outer edge of the bottom wall and face each other are folded on the bottom wall, and A container that is pivotally connected to the remaining outer edge of the bottom wall so that a pair of second side walls facing each other can be folded over the pair of first side walls into a folded state; A bottom wall corner portion protruding upward from the four corners of the wall and having a first upward flat surface located at the uppermost position in the folded state at the upper end, and an outer edge on which the first side wall of the bottom wall is disposed A bottom wall load receiving portion having a second upward flat surface extending along an outer edge of the bottom wall load receiving portion, and extending vertically on both sides of the outer side surface of the second side wall, A pair of outer load receivers having outer flat surfaces that are flush with the first upward flat surface; A pair of inner load receiving portions that extend in the vertical direction on both sides of the inner side surface of the second side wall and have an inner flat surface that abuts against the second upward flat surface in the folded state. It is.

  The invention according to claim 2 is the container according to claim 1, wherein a space between the pair of outer load receiving portions of the outer side surface of the second side wall is recessed from the outer flat surface.

  According to a third aspect of the present invention, the second side wall is formed to be horizontally longer than the first side wall, and protrudes from the bottom wall to rotatably support the lower ends of the pair of second side walls. The bottom wall corner portion protrudes upward from both end portions of the bank portion, protrudes upward from the middle portion of the bank portion, and has a third upward direction that is flush with the first upward flat surface. The container according to claim 1 or 2, further comprising a central protrusion having a flat surface at an upper end.

[Invention of Claim 1]
In the container according to claim 1, when the container is in the folded state, the outer flat surfaces of the pair of outer load receiving portions extending in the vertical direction on both sides of the outer surface of the second side wall are the first upper end of the bottom wall corner portion. The inner flat surfaces of the pair of inner load receiving portions which are located at the uppermost position flush with the upper flat surface of the second side wall and extend vertically on both sides of the inner side surface of the second side wall are the outer edges of the bottom wall. The load received by the outer load receiving portion can be received by contacting the second upward flat surface extending along the portion. As a result, when the folded containers are stacked through the pallet, the load on the upper pallet is subjected to the outer load receiving of the bottom wall corner portion and the second side wall of the container that is folded on the lower tier side. It is possible to catch both the upper and lower pallets, and the lower surface of the upper pallet is brought into contact with the lower container in a more balanced manner than before, so that the stacked state can be stabilized.

[Invention of claim 2]
In the container according to claim 2, the space between the pair of outer load receiving portions of the outer side surface of the second side wall is recessed from the outer flat surface of the outer load receiving portion. The situation which receives the load of the upper pallet in the intermediate part of the horizontal direction which becomes can be prevented.

[Invention of claim 3]
Since the load of the upper pallet can also be received by the central central protrusion in the longitudinal direction of the container according to claim 3, the container in the folded state on the lower side can be further balanced and the load on the upper pallet can be further balanced. It is possible to stabilize the stacked state.

The perspective view of the container which concerns on one Embodiment of this invention Perspective view of the bottom side of the container Perspective view of the container in the folded state Bottom wall perspective view Partially enlarged perspective view of bottom wall Partially enlarged perspective view of bottom wall Perspective view of partially broken hinge recess Perspective view of the outer side of the second side wall Perspective view of the inner side surface of the second side wall Perspective view of hinge leg Perspective view of hinge leg Partially broken perspective view of the rotation support portion of the second side wall Partially broken perspective view of the rotation support portion of the second side wall Partially enlarged perspective view of container Perspective view of stacked containers Partially enlarged perspective view of container in stacked state Perspective view of side wall side protrusion Perspective view of outer load receiving part Perspective view of the process of folding the container Partially enlarged perspective view of a folded container Side view of partially broken container in folded state Side cross-sectional view of folded container Perspective view of containers stacked in a folded state Perspective view of container loaded on pallet in folded state Perspective view of the pallet on the folded container Side view of a pallet on a folded container Side view of a pallet on a folded container Partially broken perspective view of a pallet on a folded container

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. A container 10 according to the present embodiment shown in FIG. 1 has a rectangular shape (for example, 900 [mm] × 500 [mm]) in a plan view and a rectangular parallelepiped shape whose upper surface is open, and one of the outer edges of the bottom wall 11. A pair of first side walls 20, 20 are pivotally connected to a pair of first bank portions 17, 17 projecting from a pair of short sides, while a pair of pairs projecting from a pair of long sides A pair of second side walls 30, 30 are rotatably connected to the second bank portions 12, 12. The first bank portion 17 is lower than the second bank portion 12, and a pair of first side walls 20, 20 are folded on the bottom wall 11 between the first bank portions 17, 17 as shown in FIG. 3. And then, the pair of second side walls 30 and 30 are folded on the first side walls 20 and 20 to be accommodated between the second bank portions 12 and 12 so that the entire container 10 is folded. be able to.

  Specifically, as shown in FIG. 4, the bottom wall 11 includes a rectangular main plate portion 11 </ b> S that forms a flat bottom surface. The second bank portion 12 includes a second bank side wall 12X that stands upright from a pair of outer edges on the long side of the main plate portion 11S, an upper bank wall 12Y that extends horizontally outward from the upper end of the bank side wall 12X, A plurality of ribs 12Z communicating between the lower surface of the wall 12Y and the outer edge portion of the main plate portion 11S are provided.

  The 2nd bank part 12 is provided with the hinge recessed part 60 open | released to the upper surface and the inner surface in the multiple places of a longitudinal direction. As shown in FIG. 5, the upper surface opening 60 </ b> A of the hinge recess 60 has a rectangular shape extending in the longitudinal direction of the second bank portion 12, and the side surface opening 60 </ b> B is smaller than the upper surface opening 60 </ b> A in the longitudinal direction of the second bank portion 12. A quadrangular shape is arranged in the center of the upper surface opening 60A. In addition, the hinge recess 60 is located on both sides of the upper surface opening 60A, the rear wall 64 facing the side surface opening 60B, the bottom wall 63 communicating between the lower side portion of the side surface opening 60B and the rear surface wall 64, and the rear side. A pair of side walls 65, 65 facing each other across the face wall 64 and the bottom wall 63, and a pair of opening side walls located between the pair of side walls 65, 65 and both sides of the side opening 60B. 66, 66.

  As shown in FIG. 7, retaining protrusions 61, 61 protrude from the upper ends of the pair of opening side walls 66, 66, and one side of each retaining protrusion 61 is integrated with the side wall 65. . Of each of the retaining protrusions 61, the surface facing the rear wall 64 is provided with an introduction slope 61 </ b> A that is inclined from the upper end toward the position near the lower end, and a front end surface 61 </ b> B that is parallel to the rear wall 64 below. ing. Further, a stepped locking surface 61 </ b> D having a stepped lower side on the opening side wall 66 side than the rear wall 64 side is formed on the edge of the bottom surface of the retaining protrusion 61 on the side opening 60 </ b> B side. Further, an engaging protrusion 62 extending downward from the retaining protrusion 61 is formed in the middle of each side wall 65 in the width direction, and the rear wall 64 side of the engaging protrusion 62 has a sliding contact slope 62A. On the other hand, the opposite side is a locking surface 62C.

  As shown in FIGS. 8 and 9, a plurality of hinge legs 70 corresponding to the hinge recesses 60 of the bottom wall 11 are provided on the lower surface of the second side wall 30. The hinge leg 70 has an inverted T-shape with a pair of hinge protrusions 71 and 71 on both sides of the leg body 79 suspended from the lower surface of the second side wall 30 (lateral direction of the second side wall 30). ing. Further, the pair of hinge legs 70, 70 located at the center in the lateral direction of the second side wall 30 is provided with an elastic engagement portion 72 on one hinge protrusion 71 as shown in an enlarged view in FIG. The other hinge leg portions 70, 70 have only the hinge protrusion 71.

  The lower surfaces of the hinge protrusion 71 and the leg main body 79 are flush with each other. Further, a corner portion between the lower surface of the leg main body 79 and the outer surface (the surface on the outer surface 30G side of the second side wall 30) forms a curved surface 79K, and the curved surface 79K is also flush with the hinge leg portion 70. . Moreover, as shown in FIG. 11, the inner surface 71N of the hinge protrusion 71 is shifted outward with respect to the inner surface of the leg main body 79 (the surface on the inner surface 30N side of the second side wall 30). The upper surface 71J of the hinge protrusion 71 is horizontal, and the upper surface protrusion 74 projects from the end of the upper surface 71J on the inner surface 71N side. The upper surface protrusion 74 has a trapezoidal shape having a surface flush with the inner surface 71N, a surface inclined on the opposite side, and a horizontal upper surface.

  The elastic engagement portion 72 described above extends the entire side of the hinge protrusion 71 excluding the upper surface protrusion 74 to the side, and forms a slit 71S from the inner surface 71N toward the curved surface 79K, thereby forming the hinge protrusion 71 of the hinge protrusion 71. It is formed in the shape of a cantilever next to it. Further, a side projection 73 that protrudes on the opposite side of the leg main body 79 is provided at the tip of the elastic engagement portion 72.

  As shown in FIG. 12, the hinge leg 70 is inserted into the hinge recess 60 with the second side wall 30 in a horizontal posture. At this time, the upper surface protrusion 74 of the hinge leg 70 is in sliding contact with the introduction slope 61A, passes through the retaining protrusion 61, and is engaged with the upper side of the stepped locking surface 61D (see FIG. 7) of the retaining protrusion 61. As a result, the hinge leg 70 is prevented from coming off in the hinge recess 60. As shown in FIG. 13, when the second side wall 30 is in the upright posture, the side protrusion 73 slides on the sliding contact slope 62 </ b> A (see FIG. 7) and flexes the elastic engaging portion 72 while engaging the engaging protrusion 62. , And engages with the engaging surface 62C of the engaging protrusion 62. Thereby, the 2nd side wall 30 is hold | maintained at an upright state. At this time, the upper surface of the upper surface protrusion 74 (see FIG. 10) abuts on the lower side of the stepped locking surface 61D (see FIG. 7) of the retaining protrusion 61. Further, the lower surface of the second side wall 30 and the upper surface of the second bank portion 12 come into contact with each other, and the protrusion 30T protruding from the inner surface of the lower surface of the second side wall 30 causes the inner edge portion of the second bank portion 12 to be depressed. Engages with the stepped portion 12K. Thereby, the rotation of the second side wall 30 from the standing state to the outside is restricted.

  As shown in FIG. 5, the first bank portion 17 is a rib that connects the bank side wall 17 </ b> X standing upright from the outer edge portion of the pair of short sides of the main plate portion 11 </ b> S, the outside of the bank side wall 17 </ b> X, and the upper surface of the main plate portion 11 </ b> S. 17Z, and a portion corresponding to the bank upper wall 12Y of the second bank portion 12 is not provided. The first bank portion 17 is also provided with a plurality of hinge recesses 67 as in the second bank portion 12. The hinge recess 67 has a pair of ribs 17Z and 17Z projecting outward from both side edges of the side opening 67B formed in the bank side wall 17X, and is provided inside the portion where the ribs 17Z and 17Z are connected by the outer wall 17W. It has been. Further, a retaining protrusion 67T similar to the retaining protrusion 61 of the hinge recess 60 described above is also provided in the hinge recess 67.

  Corresponding to the plurality of hinge recesses 67 of the first bank portion 17, from the lower surface of the first side wall 20, a plurality of hinge leg portions 20 </ b> J having an inverted T shape similar to the hinge leg portion 70 of the second side wall 30 ( 19) is suspended. And the 1st side wall 20 rotates between a horizontal attitude | position and a standing attitude | position by coupling | bonding with these hinge leg parts 20J and the hinge recessed part 67 of the 1st bank part 17. FIG. In addition, locking projections (not shown) protrude from the lower surface of the first side wall 20, and when the first side wall 20 is in a standing posture, the locking projections are provided on the upper end of the outer surface of the bank side wall 17X. The first side wall 20 is held in a standing posture. Further, similarly to the second side wall 30, a not-shown ridge protrudes from the lower surface inner edge portion of the first side wall 20, and when the first side wall 20 is in an upright posture, the ridge is formed on the first bank portion 17. Engage with the stepped portion 17K formed by recessing the inner edge.

  As shown in FIG. 4, corner protrusions 12 </ b> A corresponding to the “bottom wall corner portion” of the present invention are provided at the corners of the first bank portion 17 and the second bank portion 12. As shown in FIG. 5, the corner protrusion 12 </ b> A is the highest also in the bottom wall 11, the planar shape is L-shaped, and the short side portion 12 </ b> M and the second bank portion 12 along the first bank portion 17. And a long side portion 12N extending along the side. Specifically, as shown in FIG. 6, the long side portion 12 </ b> N is located in the middle between the rear wall 64 of the hinge recess 60 and the stepped portion 12 </ b> K in the width direction of the second bank portion 12. Further, the long side portion 12N extends in the longitudinal direction of the second bank portion 12 from the hinge recess 60 at the end of the second bank portion 12 to the outer side surface 11G on the short side of the main plate portion 11S shown in FIG. The upper surface of the long side portion 12N has a flat horizontal strip shape. On the other hand, the short side portion 12 </ b> M is located outside the hinge recess 67 of the first bank portion 17. Further, substantially the entire upper surface of the short side portion 12M forms a ¼ circular arc surface 12R curved over the side surface 12P facing the center side of the first bank portion 17. The upper surface 12E of the entire corner protrusion 12A is the “first upward flat surface” according to the present invention.

  A pedestal portion 17V as a part of the first bank portion 17 is continuously formed at the lower end portion of the side surface 12P of the short side portion 12M. As shown in FIG. 6, the pedestal portion 17V is located outside the hinge recess 67 at the end of the first bank portion 17, and the ceiling wall 17T protruding outward from the upper end of the outer wall 17W of the hinge recess 67 is shown in FIG. As shown in FIG. 5, it has a structure supported by a plurality of ribs 17Z from below.

  Although not shown, the lower end portions of both side edges of the first side wall 20 are side plate portions whose outer surface side is depressed and whose wall thickness is smaller than that of the entire first side wall 20. When the first side wall 20 is in the standing posture, the side plate portion is overlapped with the short side portion 12M from the inside. Moreover, as shown in FIG. 14, the both ends of the horizontal direction of the 1st side wall 20 are mounted on the base parts 17V and 17V.

  As shown in FIG. 4, the central protrusion 12 </ b> T protrudes from the center in the longitudinal direction on the upper surface of the second bank portion 12. The center protrusion 12T is formed over the entire width direction of the second bank portion 12 in a rectangular shape whose planar shape extends in the longitudinal direction of the second bank portion 12. The upper surface 12T1 of the central protrusion 12T forms a “third upward flat surface” according to the present invention, and is flush with the upper surface 12E of the corner protrusion 12A.

  From the positions near the both ends in the longitudinal direction on the upper surface of the second bank portion 12, the overpass projections 55, 55 protrude. The overpass projection 55 has a trapezoidal shape, and has an inclined surface on the center side in the longitudinal direction of the second bank portion 12, and has a vertical surface on the opposite side, and the upper surface is horizontal. The overpass projection 55 is disposed outside the long side 12N of the corner projection 12A and is partially connected to the long side 12N. The upper surface of the overpass 55 is the upper surface of the corner projection 12A. Slightly lower than 12E.

  As shown in FIG. 2, a fitting protrusion 19 protrudes from the entire bottom surface of the bottom wall 11 except its outer edge portion. The fitting protrusion 19 surrounds the outer edge of the lattice-shaped rib with an annular rib. Then, as shown in FIG. 15, when the containers 10 and 10 are stacked, the fitting protrusion 19 of the upper container 10 is fitted into the upper surface opening 10K of the lower container 10, and the container 10 , 10 to prevent lateral slippage.

  As shown in FIG. 2, a pair of first engaging protrusions 40, 40 are provided at positions near both ends on the outer edge of the pair of short sides of the lower surface of the bottom wall 11, and the first is located at the center. Two engagement protrusions 45 are provided. On the other hand, as shown in FIG. 14, a part of the outer edge portion of the uppermost lateral rib 22A of the first side wall 20 is cut off on the upper surface of the first side wall 20, and a pair of first ends are formed at both ends. A first engagement recess 24 is formed, and a second engagement recess 25 is formed in the center. Then, as shown in FIG. 15, when the containers 10 and 10 are stacked, the first engagement protrusion 40 and the second engagement protrusion 45 of the upper container 10 as shown in FIG. However, it engages with the first engaging recess 24 and the second engaging recess 25 of the lower container 10 to prevent the first side wall 20 of the lower container 10 from expanding outward. The first engagement protrusion 40 is slightly displaced from the second engagement protrusion 45 toward the center in the longitudinal direction of the container 10, and accordingly, the first engagement protrusion 24 in the first engagement recess 24 is arranged. The engagement surface with the mating protrusion 40 is slightly shifted from the engagement surface with the second engagement protrusion 45 in the second engagement recess 25 toward the center in the longitudinal direction of the container 10.

As shown in FIG. 2, a pair of first lower surface side protrusions 14, 14 are sequentially formed on the outer edge portions on the pair of long sides of the lower surface of the bottom wall 11 from both ends toward the center position. A pair of second lower surface side protrusions 15 and 15 and a pair of extension mechanism portions 16 and 16 are formed in order. The first lower surface side protrusion 14 has a rectangular parallelepiped shape extending along the long side of the bottom wall 11. The second lower surface side protrusion 15 extends in a rail shape from a position away from the first lower surface side protrusion 14 to the center side of the long side of the bottom wall 11, and is inclined to the first lower surface side protrusion 14 side. On the other hand, it has a vertical surface on the extension mechanism portion 16 side. The extension mechanism portion 16 is provided with a plurality of lower surface side ribs 12L on the inner surface of the extension wall 12F depending from the outer surface of the second bank portion 12. Moreover, between the 1st and 2nd lower surface side protrusions 14 and 15 and the extension mechanism part 16, those lower surfaces and those inner surfaces by the side of those fitting protrusions 19 become flush. Yes.

  With respect to the first lower surface side protrusions 14 and the like, the entire outer edge portion of the uppermost lateral rib 32A of the second side wall 30 is cut off on the upper surface of the second side wall 30 as shown in FIG. A portion 33 is formed. In addition, the upper surface of the second lateral rib 32A from the top of the second side wall 30 forms the lower step surface 33B of the rail portion 33, and the lower step surface 33B is directly above the overpass projections 55, 55 on the bottom wall 11. In this position, an overpass projection 50 having the same shape as the overpass projection 55 is provided. Further, as shown in FIG. 14, the upper surface of the overpass projection 55 is slightly lower than the upper surface 33 </ b> A of the rail portion 33. When the containers 10 and 10 are stacked, the rail projection 33T above the lower step surface 33B of the rail portion 33 becomes the fitting projection 19 and the first lower surface side projection 14 of the upper container 10 and the like. To prevent the second side wall 30 of the lower container 10 from bulging outward.

  Further, when stacking the containers 10, when one end side in the longitudinal direction of the container 10 on the upper stage side is lifted into an inclined posture and slid along the rail protrusions 33 </ b> T and 33 </ b> T of the container 10 on the lower stage side, The first lower surface side protrusions 14 and 14 of the upper container 10 ride on the overpass protrusions 50 and 50 of the lower container 10, and the first and second engagement protrusions 40 and 45 on the upper stage are When the first lower surface side protrusions 14, 14 move over the overpass protrusions 50, 50 when the first lower surface side protrusions 14, 14 move over the first and second engaging recesses 24, 25 of the lower container 10, the first and second The two engagement protrusions 40 and 45 engage with the first and second engagement recesses 24 and 25 in a concavo-convex manner. Thereby, stacking work becomes easy. Further, in the stacked state, the overhanging protrusions 50 of the lower container 10 are accommodated between the first lower surface side protrusion 14 and the second lower surface side protrusion 15 of the upper container 10, and the upper and lower containers 10, It also plays the role of 10 lateral slip prevention.

  As shown in FIG. 14, a mechanism room 20H is provided in the upper center of the outer surface of the first side wall 20, and a lock operation member 28 is accommodated in the mechanism room 20H. Also, lock bars 29, 29 extending in the lateral direction are provided on both sides of the mechanism room 20H. The lock bars 29, 29 are provided at both lateral ends of the second side wall 30 as shown in FIG. A lock hole 39 is formed. Normally, the front ends of the lock bars 29 and 29 engage with the lock holes 39 and 39 of the second side wall 30 to lock the container 10 in the assembled state. When the lock bar 29 is operated, both the lock bars 29 and 29 are operated. Is released from the lock holes 39, 39, and the lock is released.

  A handle 20 </ b> Z is provided below the mechanism room 20 </ b> H in the first side wall 20. Moreover, the intermediate part of the up-down direction containing the handle part 20Z among the outer surfaces 20G of the 1st side wall 20 is slightly depressed with respect to the whole. And the whole thickness except the intermediate part of the up-down direction among the 1st side walls 20 is slightly larger than the height from the main board part 11S of the 1st bank part 17, as shown in FIG.

  As shown in FIG. 1, a pair of handle portions 30 </ b> H and 30 </ b> H are formed on both sides of the outer side surface of the second side wall 30 with the vertical central rib group 32 </ b> L in the horizontal direction. In addition, a band-shaped mark 30M is provided at a position corresponding to the handle portion 30H at the upper edge of the inner surface of the second side wall 30.

  As shown in FIG. 9, a pair of side wall side protrusions 36 and 36 protrude from both side portions of the inner side surface 30N of the second side wall 30. As shown in FIG. 17, the side wall side projection 36 includes a band plate 36 </ b> A extending from the upper end of the second side wall 30 to a position closer to the lower end with a constant width, and the upper end, upper end position, and lower end of the inner surface of the band plate 36 </ b> A. And an inner surface protruding portion 36B protruding from the inner surface. The inner surface protrusion 36B has a rectangular parallelepiped shape, and the tip surface of the strip 36A and one side surface of the inner surface protrusion 36B are flush with each other to form the tip surface 36D of the side wall side protrusion 36. In addition, the side wall side protrusions 36 are formed with rectangular through holes 36C that penetrate the inner surface protrusions 36B and the strips 36A. Corresponding to the inner surface protrusions 36B and the through-holes 36C, on both sides of the outer surface of the first side wall 20, a plurality of recesses for receiving the inner surface protrusions 36B and protruding from the inner surfaces of the recesses are penetrated. A protrusion is formed in the hole 36 </ b> C so as to engage with the concave and convex portions.

  As shown in FIG. 17, the side edge portion including the portion of the inner side surface 30N of the second side wall 30 where the side wall side protrusion 36 protrudes is formed on the side pedestal portion 30E protruding slightly inward from the entire inner side surface 30N. It has become. A frame-shaped protrusion 39T protrudes from the opening edge of the lock hole 39 in the side pedestal 30E, and the entire side pedestal 30E other than the side wall side protrusion 36 and the frame-shaped protrusion 39T is flat. Further, the protruding amount of the side wall side protruding portion 36 with respect to the side pedestal portion 30 </ b> E is substantially the same as the protruding amount of the first bank portion 17 with respect to the upper surface of the main plate portion 11 </ b> S of the bottom wall 11. Further, the level difference between the side pedestal portion 30E of the second side wall 30 and the inner side surface 30N other than the side pedestal portion 30E is the total thickness excluding the central portion in the vertical direction of the first side wall 20 and the height of the first bank portion 17. It is almost the same as the difference.

  As shown in FIG. 8, a pair of outer load receiving portions 35 protrude from both side portions of the outer side surface 30 </ b> G of the second side wall 30. The outer load receiving portion 35 extends from the lower end of the second side wall 30 to a position closer to the upper end, and the intermediate portion is bent in a crank shape. The front end surface 35E of the outer load receiving portion 35 corresponds to an “outer flat surface” according to the present invention, and is a flat vertical surface from the upper end to the lower end. Further, the distal end surface 35E of the outer load receiving portion 35 is located on the outermost side with respect to the entire outer surface 30G of the second side wall 30. In other words, the outer load receiving portion 35 protrudes greatly outward in the entire outer surface 30G. Further, the first protrusion 35A on the upper side of the crank-shaped bent portion in the outer load receiving portion 35 is shifted toward the lateral center of the second side wall 30 with respect to the lower second protrusion 35B. . Then, the laterally outer portion of the second side wall 30 from the first protrusion 35A is a protrusion receiving part 34, and the step which is one side surface of the first protrusion 35A of the protrusion receiving part 34. A recessed portion 34E is formed on the surface 34D by recessing the end portion on the second protruding portion 35B side in a stepped shape.

  This completes the description of the configuration of the container 10 of the present embodiment. Next, the effect of this container 10 is demonstrated. When not in use, the container 10 is folded and stored and transported. When the first side wall 20 is tilted inward to bring it into the folded state, the first side wall 20 is in a horizontal posture, and the inner side surface 20N of the first side wall 20 is the main plate portion 11S of the bottom wall 11 as shown in FIG. And the entire portion of the outer side surface 20 </ b> G of the first side wall 20 excluding the intermediate portion in the vertical direction is positioned slightly above the upper surface of the first bank portion 17.

  Next, when the second side wall 30 is tilted inward, as shown in FIGS. 19 and 20, the second side wall 30 is also in a horizontal position, and as shown in FIG. 22, the tip of the side wall side protrusion 36 of the first side wall 20. The surface 36D is in contact with the outer side of the first bank portion 17 of the main plate portion 11S of the bottom wall 11, and the side pedestal portion 30E of the second side wall 30 is connected to the upper surface of the first bank portion 17 (the upper surface of the pedestal portion 17V is also In addition, the inner side surface 30N of the second side wall 30 other than the side pedestal portion 30E contacts the outer side surface 20G of the first side wall 20. On the outer side surface 30G of one second side wall 30, as shown in FIG. 21, the tip surface 35E of the outer load receiving portion 35 on the second side wall 30 is the upper surface 12E of the corner protrusion 12A and the upper surface of the center protrusion 12T. It becomes flush with 12T1 (see FIG. 4).

  The container 10 in a folded state can be in a stacked state as shown in FIG. Then, the fitting protrusion 19 of the upper container 10 is fitted inside the corner protrusion 12 </ b> A and the outer load receiving part 35 in the lower container 10. Thereby, the horizontal displacement of the upper and lower containers 10 and 10 is prevented. Moreover, between the 1st lower surface side protrusion 14 and the 2nd lower surface side protrusion 15 in the container 10 of the upper stage side, and between the extension mechanism parts 16 and 16, the overpass protrusion 55 in the container 10 of the lower stage side, The central protrusion 12T is accommodated. Further, the first engaging protrusion 40 of the upper container 10 is accommodated in the depressed portion 34E of the protrusion receiving part 34 of the lower container 10, and the second engaging protrusion 45 of the upper container 10 is lower. It fits in parts other than the depression part 34E in the protrusion receiving part 34 of the container 10 on the side.

  In the present embodiment, the side pedestal portion 30E and the side wall side protrusions 36 in the second side wall 30 correspond to the “inner surface load receiving portion” according to the present invention, and the first bank portion 17 and the main plate in the bottom wall 11 The outer edge portion of the portion 11S corresponds to the “bottom wall load receiving portion” according to the present invention, and the surfaces that contact each other are the “inner flat surface” and the “second upward flat surface” according to the present invention. It corresponds to.

  Now, after the container 10 is folded, a plurality of containers 10 may be arranged on the pallet and stacked via the pallet. FIG. 24 shows a pallet 80 capable of nesting as an example of the pallet. Specifically, the pallet 80 is provided with three rectangular portions 81 extending in the vertical direction of a quadrangular shape that is a planar shape, at both ends in the horizontal direction and at the center. Each girder portion 81 has a groove-shaped structure with an open top surface, and the girder portion 81 is narrowed so that the width gradually decreases downward. A plurality of vertical grooves 83 are formed on both side surfaces of the beam portion 81. When the pallets 80, 80 are overlapped with each other, a nesting state is achieved in which the beam portion 81 of the upper pallet 80 is fitted inside the beam portion 81 of the lower pallet 80.

  For example, two containers 10 according to the present embodiment are folded and placed side by side in the vertical direction of the pallet 80 (the direction in which the beam portion 81 extends). Then, the fitting protrusion 19 of each container 10 abuts on the upper surface of the pallet 80, and both end portions in the longitudinal direction of the pallet 80 are arranged on the beam portions 81, 81 at both ends in the lateral direction of the pallet 80. Become. Further, the containers 10 on which the folded containers 10 and 10 are placed may be stacked in a plurality of stages. That is, as shown in FIG. 25, another pallet 80 may be placed on the folded containers 10 and 10 placed on the pallet 80. Then, as shown in FIGS. 26 and 27, a part of the girder part 81 floats without getting through the outer load receiving part 35, the corner projecting part 12 </ b> A or the central projecting part 12 </ b> T of the container 10. The outer load receiving portions 35 and the like are dispersed and come into contact with each other over the entire longitudinal direction.

  Specifically, when the container 10 according to the present embodiment is in the folded state, as shown in FIG. 21, a pair of outer load receiving portions 35 extending in the vertical direction on both sides of the outer side surface 30G of the second side wall 30. The side wall side of the front end surface 35E of the corner projection 12A is flush with the upper surface 12E of the corner projection 12A and extends vertically on both sides of the inner side surface of the second side wall 30 as shown in FIG. The protrusion 36 and the side pedestal 30 </ b> E can contact the outer edge of the bottom wall 11 and receive the load received by the outer load receiver 35. Thus, when the folded containers 10 are stacked through the pallet 80, the lower surface of the upper pallet 80 is brought into contact with the lower container 10 in a balanced manner as shown in FIG. The load on the side pallet 80 can be received by both the corner protrusion 12A of the container 10 that is in the folded state on the lower side and the outer load receiving portion 35 of the second side wall 30. Further, since the load of the upper pallet 80 can be received by the central protrusion 12T in the center of the container 10 in the longitudinal direction, the load of the upper pallet 80 can be further balanced with the load on the lower pallet 80 being folded. The container 10 can be received. These make it possible to stabilize the stacked state. Moreover, since the space between the pair of outer load receiving portions 35 of the outer side surface 30G of the second side wall 30 is recessed from the outer flat surface of the outer load receiving portion 35, the second side wall 30 is in a floating state. The situation which receives the load of the upper pallet in the intermediate part of the horizontal direction which becomes can be prevented.

[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) Although the corner protrusion 12A of the embodiment as the “bottom wall corner portion” according to the present invention has a protruding structure protruding with respect to the entire second bank portion 12, the entire second bank portion is formed. The top surface of the bottom wall may be located at the top of the bottom wall, and both end portions in the longitudinal direction of the second bank portion may be “bottom wall corner portions” according to the present invention.

  (2) Further, the corner protrusion 12A of the first embodiment has an L-shape in which the planar shape has two sides along the first bank portion 17 and the second bank portion 12, It may be I-shaped along only one of the first bank part or the second bank part.

  (3) In the above-described embodiment, both the front end surface 36D of the side wall side protrusion 36 and the side pedestal portion 30E are in contact with the upper surfaces of the main plate portion 11S and the first bank portion 17, but only one of them is The structure which touches may be sufficient.

10 Container 11 Bottom wall 11S Main plate part 12 Second bank part (bank part)
12A Corner protrusion (bottom wall corner)
12T center protrusion 12T1 upper surface (third upward flat surface)
17 1st bank part (bottom wall load receiving part)
20 1st side wall 30 2nd side wall 30E Side base part (inside load receiving part)
30G Outer side surface 30N Inner side surface 35 Outer load receiving portion 35E Tip surface (outer flat surface)
36 Side wall side protrusion (inner load receiving part)
36D Tip surface (inward flat surface)

Claims (3)

A pair of first side walls, which are pivotally connected to the outer edge of the bottom wall and are opposed to each other, are folded on the bottom wall, and then are pivotally connected to the remaining outer edge of the bottom wall to each other. In a container in which a pair of opposing second side walls can be folded onto the pair of first side walls to be folded,
A bottom wall corner portion protruding upward from the four corners of the bottom wall and having a first upward flat surface located at the uppermost position in the folded state at the upper end;
A bottom wall load receiving portion provided on an outer edge portion of the bottom wall on which the first side wall is disposed and having a second upward flat surface extending along the outer edge portion;
A pair of outer load receivers having an outer flat surface extending in the vertical direction on both sides of the outer surface of the second side wall and being flush with the first upward flat surface in the folded state;
A container having a pair of inner load receiving portions that extend in the vertical direction on both sides of the inner side surface of the second side wall and have an inner flat surface that abuts against the second upward flat surface in the folded state. .   The container according to claim 1, wherein a space between the pair of outer load receiving portions among the outer surfaces of the second side wall is recessed from the outer flat surface. The second side wall is formed horizontally longer than the first side wall,
A pair of banks that protrude from the bottom wall and rotatably support the lower ends of the pair of second side walls;
The bottom wall corner portion protrudes upward from both end portions of the bank portion,
The center protrusion which protrudes upwards from the intermediate part of the said bank part, and has a 3rd upward flat surface flush with the said 1st upward flat surface, The center protrusion which has the upper end of Claim 1 or 2 container.

Images