JP2006335388A - Container stacking structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container stacking structure capable of stacking small containers in a consistent state while the upper side of a flange of a large folding container is kept in a flat state. <P>SOLUTION: Fitting projection are protruded at four corners of the bottom side of a small container, and an engagement recess with a lower-side opened is formed on the fitting projection. A fitting recess 15 fitted to the fitting projection of the small container is formed at the end of the top side of a long-side plate and the end of the top side of a short-side plate at each of four corners of the top side of a large folding container 11. A storage recess 16 capable of storing a part of the fitting projection of the small container in a stacking mode is formed at the center of the top side of the long-side plate of the large folding container, and an engagement projection 17 engaged with the engagement recess formed in the fitting projection is formed in the storage recess. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container stack structure, and more particularly to a structure for stably stacking a small container on a large folding container.

As a structure for stably stacking a small folding container on top of a large folding container, it can be fitted on the upper surface of the flange of the large folding container and into the recess formed on the bottom bottom of the small folding container located above What formed a simple fitting convex part is known (for example, refer to patent documents 1).
JP 2002-128071 A

  However, if the above-mentioned fitting convex part is formed, the fitting convex part protruding from the upper surface of the flange part may become an obstacle when an article is taken in and out. Further, when a cardboard box or the like is placed on the large folding container, the fitting convex portion may bite into the bottom surface of the box.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a container stacking structure in which a small container can be stacked in a stable state with the upper surface of the flange portion of the large folding container kept flat.

  In order to achieve the above object, the container stack structure of the present invention comprises a rectangular bottom plate, a pair of long side plates whose lower sides are rotatably connected to the opposing long sides of the bottom plate, and the bottom plate facing each other. It has a pair of short side plates whose lower sides are pivotally connected to the short side, and when folded, both the short side plate and the long side plate are folded in order on the top of the bottom plate, and when assembled, both lengths raised from the bottom plate The length of the long side corresponds to the length of the short side of the large folding container on the large folding container assembled so that both ends of the short side plate are sandwiched between both ends of the inner side of the side plate. A small container having a length corresponding to half of the length of the long side of the large folding container is placed on the upper part of one short side of the large folding container with the bottom of one long side of the small container placed thereon. On the long side of the large folding container It is a structure for stacking in a state where it is placed on one half of the small container, and a projection is provided at the four corners of the bottom surface of the small container, and an engagement recess having a lower opening is provided at the fitting projection. The large foldable container is provided with fitting recesses at the four corners on the upper surface of the large foldable container so that the foldable convex portions of the small container can be fitted over the upper end of the long side plate and the upper end of the short side plate. In the central part of the upper side of the long side plate of the container, there is provided a storage recess capable of storing a part of the fitting convex portion of the small container at the time of stacking, and the engagement provided in the fitting convex portion in the storage concave portion An engagement convex portion that engages with the concave portion is provided.

  According to the container stack structure of the present invention, when a small container is stacked in a large folding container, the fitting convex portion and the engaging concave portion on the bottom surface of the small container, and the fitting concave portion and the storing concave portion on the upper surface of the large folding container flange portion. Since the engaging projections and the engaging projections are fitted with each other, the small container can be stably stacked in the large folding container, and the central portion of the long side plate of the large folding container can be prevented from being deformed. In addition, since the upper surface of the flange portion of the large folding container is flat, the bottom surface of the cardboard box or the like is not damaged even if the cardboard boxes or the like are stacked.

  1 to 3 show an example of a large-sized folding container according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is an enlarged perspective view of a main part. 4 to 6 show an example of a small container according to the present invention. FIG. 4 is a perspective view, FIG. 5 is a bottom view, and FIG. 6 is an enlarged perspective view of a main part. FIG. 7 is a front view showing a state in which two small containers are stacked on a large folding container.

  First, the large foldable container 11 shown in FIGS. 1 to 3 has a rectangular bottom plate 12 having a long side 12a and a short side 12b, and a lower side rotatably connected to the opposing long side 12a of the bottom plate 12. A pair of long side plates 13 and 13 and a pair of short side plates 14 and 14 whose lower sides are rotatably connected to the opposing short side 12b of the bottom plate. In a state where the short side plates 14 and 14 are sandwiched between both ends, the upper side is formed in a box shape having an opening.

  When the large folding container 11 is folded, first, the short side plates 14 and 14 are turned inward of the container to be folded on the upper surface of the bottom plate 12, and then the long side plates 13 and 13 are turned inward of the container. And fold over the short side plates 14, 14. Further, in the folded state, after the long side plates 13 and 13 are raised substantially perpendicular to the bottom plate 12, the short side plates 14 and 14 are raised substantially perpendicular to the bottom plate 12 as shown in FIG. It will be in an assembly state. Both end portions of the long side plate 13 and both end portions of the short side plate 14 are respectively provided with locking portions and engaging portions (not shown) for holding the long side plate 13 and the short side plate 14 in an assembled state. ing.

  On the other hand, the small container 21 shown in FIGS. 4 to 6 is basically formed in the same shape as the large foldable container 11 and has a rectangular bottom plate 22 having a long side 22a and a short side 22b. A pair of long side plates 23, 23 whose lower sides are rotatably connected to the opposing long side 22a of the bottom plate 22, and a pair of lower sides rotatably connected to the opposing short side 22b of the bottom plate It has a short side plate 24, 24, and is formed in a box shape with the upper side opened while the short side plate 24, 24 is sandwiched between both ends of the long side plate 23, 23 during assembly. .

  In this small container 21, the length on the long side corresponds to the length on the short side of the large folding container, and the length on the short side corresponds to half the length on the long side of the large folding container. As shown in FIG. 7, one long side bottom of the small container 21 is placed on one short side upper part of the large folding container 11, and the short side bottom of the small container 21 is large. The folding container 11 can be stacked while being placed on the upper half of the long side.

  The bottom surface of the small container 21 has a rectangular outer peripheral shape, and is provided with projecting portions 25 fitted into the upper opening of the small container 21 in an assembled state with a plurality of ribs crossed, and four corners thereof. The fitting protrusions 26 project from the portions in an L shape. As shown in FIG. 6, the fitting convex portion 26 is formed by combining a plurality of ribs 26 a projecting from the bottom surface in the same manner as the projecting portion 25, and the lower edge is the lower edge of the projecting portion 25. An engaging recess 27 having an opening at the bottom is provided on the short side of the protrusion 25.

  In addition, L-shaped fitting recesses 28 into which the fitting protrusions 26 can be fitted are respectively provided at the four corners of the upper surface flange portion of the small container 21, and when the small containers 21 are stacked together, The protruding portion 25 protruding from the bottom surface of the small container 21 is fitted inside the long side plate 23 and the short side plate 24, and the fitting convex portions 26 at the four corners are fitted into the fitting concave portions 28, respectively. It is formed as follows. Thereby, stacking of the small containers 21 can be performed in a stable state.

  And the fitting recessed part 15 which can fit the said fitting convex part 26 of the small container 21 in the four corners of the upper surface of the said large foldable container 11 is the flange part upper surface edge part of the long side board 13, and the short side board 14 A storage recess 16 capable of storing a short side portion of the fitting convex portion 26 of the small container 21 is provided in an L shape over the upper end of the flange portion and at the center of the upper surface of the flange portion of the long side plate 13. Is provided. Further, on the upper surface of the storage recess 16, as shown in FIG. 7, when two small containers 21 are stacked, the engagement recesses 27 provided in the fitting protrusions 26 of both small containers 21 are respectively provided. Two engaging projections 17 to be engaged are provided.

  When two small containers 21 are stacked on the large folding container 11, two of the four fitting convex portions 26 of each small container 21 are fitted in the fitting concave portions 15 of the large folding container 11, respectively. The remaining two fitting projections 26 are respectively housed in the storage recesses 16 of the large-sized folding container 11 and the engagement recesses 27 of the fitting projections 26 project from the storage recesses 16. The joint protrusions 17 are engaged with each other. In addition, three sides of the protruding portion 25 projecting from the bottom surface of the small container 21 are fitted on the inside of the short side plate 14 of the large folding container 11 on the long side, and the two sides on the short side are large folded. It will be in the state where it fitted in the long side board 13 which the container 11 opposes.

  In this way, by engaging the engaging concave portion 27 provided in the small container 21 and the engaging convex portion 17 provided in the large folding container 11, the long side plate 13 of the large folding container 11 is moved outward of the container. Therefore, the small container 21 does not fall into the large folding container 11. Further, since the upper surface of the flange portion of the large folding container 11 is formed flat, it is possible to easily put in and out articles, and no damage is caused even if a cardboard box or the like is placed on the large folding container 11. . Even when only one small container 21 is stacked on the large folding container 11, the engagement convex portion 17 and the engagement concave portion 27 engage with each other, so that the deformation of the long side plate 13 can be prevented.

  In the present embodiment, the folding container having the same folding structure as that of the large folding container 11 is illustrated as the small container 21, but a folding container having another folding structure may be used, and a box shape having no folding structure. It may be a container. Further, a convex portion corresponding to the fitting concave portion 15 and the accommodating concave portion 16 on the upper surface is formed on the bottom surface of the large foldable container 11, and an engaging concave portion corresponding to the engaging convex portion 17 is provided. It is possible to improve stability when the folding containers 11 are stacked.

It is a perspective view which shows one example of a large sized folding container in this invention. It is also a plan view. It is an enlarged perspective view of the principal part similarly. It is a perspective view which shows one example of a small container in this invention. It is a bottom view similarly. It is an enlarged perspective view of the principal part similarly. It is a front view which shows the state which stacked two small containers on the large foldable container.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Large folding container, 12 ... Bottom plate, 13 ... Long side plate, 14 ... Short side plate, 15 ... Fitting recessed part, 16 ... Storage recessed part, 17 ... Engaging convex part, 21 ... Small container, 22 ... Bottom plate, 23 ... long side plate, 24 ... short side plate, 25 ... projection, 26 ... fitting projection, 27 ... engagement recess, 28 ... fitting recess

Claims (1)

  A rectangular bottom plate, a pair of long side plates whose lower sides are rotatably connected to the opposing long sides of the bottom plate, and a pair of short sides whose lower sides are rotatably connected to the opposing short sides of the bottom plate When folding, it is folded in the order of the short side plate and the long side plate in order on the top surface of the bottom plate, and at the time of assembly, both ends of the short side plate are sandwiched between the inner side ends of both long side plates raised from the bottom plate On the large folding container to be assembled, the length on the long side corresponds to the length on the short side of the large folding container, and the length on the short side is half the length on the long side of the large folding container. The corresponding small container is placed on one long side bottom of the small container on the short side upper part of the large folding container, and the short side bottom of the small container is placed on the long side upper half of the large folding container. For stacking in a state of being placed on the The convex protrusions are provided at the four corners of the bottom surface of the small container, the engaging concave portions are provided at the bottom of the fitting convex part, and the upper edges of the long side plates are provided at the four corners of the upper surface of the large folding container. A fitting recess capable of fitting the fitting projection of the small container is provided between the upper portion and the upper end of the short side plate, and the upper side central portion of the long side plate of the large folding container A container characterized in that a storage concave portion capable of storing a part of the fitting convex portion is provided, and an engaging convex portion that engages with an engaging concave portion provided in the fitting convex portion is provided in the storage concave portion. Stack structure.

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