Storage unit

Abstract

To enhance the versatility of a tray doubling as a lid body.SOLUTION: A storage unit (10) includes a plurality of containers (12) and trays (14) doubling as lid bodies. Each tray (14) doubling as a lid body can be used as a lid to cover upper openings (UA) of the plurality of containers (12) arranged side by side in the lateral direction, and also allows the plurality of containers (12) arranged in the lateral direction to be placed on it. The plurality of containers (12) is also arranged in the vertical direction, either in a state of being placed on a tray (14) doubling as a lid body while being arranged side by side in the lateral direction, or in a state where the containers (12) arranged in the lateral direction are stacked. The upper openings (UA) of the plurality of containers (12) arranged side by side in the lateral direction on the near side in the vertical direction and those on the far side in the vertical direction are covered by separate trays (14) doubling as lid bodies, respectively.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a containment unit. [Background technology]

[0002] A combined lid tray is known which is used as a lid for a plurality of containers and also as a tray for a plurality of containers (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-52534 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional configuration, the lid tray covers the upper sides of multiple rectangular cans arranged in the front-rear and left-right directions, so there is room for improvement in order to increase the versatility of the lid tray. In addition, the size of the container covered by the lid tray is determined by the arrangement of the multiple positioning protrusions, and the size of the container accommodated in the lid tray is determined by the arrangement of the multiple partition walls. Therefore, the lid tray cannot be used as a lid or tray for multiple containers of various sizes, and it is difficult to increase the versatility of the lid tray.

[0005] One aspect of the present disclosure aims to increase the versatility of a lid / tray. [Means for solving the problem]

[0006] A storage unit according to one embodiment of the present disclosure is a storage unit comprising: a plurality of containers for storing items, the plurality of containers having an upper opening that is rectangular in a plan view and can be stacked vertically, and that is used as a lid to cover the upper openings of the plurality of containers and as a tray for placing the plurality of containers on; the lid tray can be used as a lid to cover the upper openings of the plurality of containers arranged horizontally, and can place the plurality of containers arranged horizontally on the lid tray; the plurality of containers are arranged vertically, either in a state where they are arranged horizontally and placed on the lid tray, or in a state where the plurality of containers are stacked horizontally, and the upper openings of the plurality of containers arranged horizontally at the front side of the vertical direction and the plurality of containers arranged horizontally at the back side of the vertical direction are each covered by a different lid tray.

[0007] According to the above-mentioned configuration, when putting in and taking out an article from the containers arranged horizontally on the front side in the vertical direction or the containers arranged horizontally and stacked, the lid tray on the front side in the vertical direction can be operated, so that the workability can be improved. In addition, since the lid tray covers the multiple containers arranged horizontally on the front side in the vertical direction or the back side in the vertical direction or the multiple containers arranged horizontally and stacked, it can be made smaller and lighter than when covering all the arranged containers. Furthermore, even if the stacking heights of the containers arranged horizontally on the front side in the vertical direction and the back side in the vertical direction are different, the lid tray can cover the upper openings of the containers arranged horizontally. Therefore, the versatility of the lid tray can be improved.

[0008] In a storage unit according to one aspect of the present disclosure, the containers have container bodies having a side opening that is open on at least one side in the vertical direction, and the multiple containers lined up horizontally at the front side in the vertical direction are placed on the lid-coated tray with the side opening that opens on the one side facing the front side in the vertical direction, or the multiple containers are stacked with the side opening that opens on the one side facing the front side in the vertical direction, and the multiple containers lined up horizontally at the rear side in the vertical direction are placed on the lid-coated tray with the side opening that opens on the one side facing the rear side in the vertical direction, or the multiple containers are stacked with the side opening that opens on the one side facing the rear side in the vertical direction.

[0009] According to the above configuration, when taking items in and out of multiple containers lined up horizontally at the vertical front or vertical rear side, or multiple containers stacked horizontally, this can be easily done through the side openings that open toward the vertical outside of each container.

[0010] In a storage unit according to one aspect of the present disclosure, the container has a door member for opening and closing the side opening, the container body has a pair of side openings that are open on one and the other vertical sides, and guide grooves that guide each side end of the door member in an up-down direction from each side edge of the side opening on the other side to an upper end of the container body, and the lid / tray may be configured to cover the upper openings of the multiple containers, and to cover the upper portions of the door members inserted into the corresponding guide grooves of the multiple containers.

[0011] With the above-mentioned configuration, when the lid-tray is used as a lid for multiple containers, the lid-tray covers the upper part of the door element, thereby preventing the door element from floating up and preventing items inside the container from escaping through the side opening on the other side.

[0012] A storage unit according to one embodiment of the present disclosure comprises a pallet having a pair of end beams spaced laterally apart and an intermediate beam located midway between the pair of end beams, and the pallet may be configured such that two loading areas are formed on an upper surface for placing the lid-tray thereon, and the multiple containers are placed in the loading areas via the lid-tray.

[0013] According to the above-mentioned configuration, a plurality of containers are placed on the upper surface of the pallet in a row horizontally and vertically, via the tray that doubles as a lid, and can be transported via the pallet. Effect of the Invention

[0014] According to one aspect of the present disclosure, the versatility of the lid / tray can be increased. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is an exploded perspective view of the storage unit according to the embodiment, showing a plurality of normal-sized containers arranged horizontally. [Diagram 2] FIG. 2 is an exploded perspective view of the storage unit according to the present embodiment, showing a state in which a plurality of large-sized containers are arranged horizontally. [Diagram 3] FIG. 2 is an exploded perspective view of the storage unit according to the embodiment, showing standard-sized containers stacked horizontally. [Figure 4] FIG. 2 is an exploded perspective view of the storage unit according to the present embodiment, showing large-sized containers stacked side by side. [Diagram 5] FIG. 2 is a perspective view of a container according to the present embodiment. [Figure 6] FIG. 6 is a vertical cross-sectional view of the container shown in FIG. 5. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] 6 is a partial cross-sectional perspective view of the container shown in FIG. 5 on the door member side. FIG. [Figure 9] FIG. 4 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] FIG. 2 is a perspective view of the lid / pallet according to the embodiment, seen from above. [Figure 11] 11 is a perspective view of the lid / pallet shown in FIG. 10 as seen from below. [Figure 12] 12 is an enlarged cross-sectional view taken along line XII-XII in FIG. 11. [Figure 13] FIG. 2 is a plan sectional view of the storage unit shown in FIG. 1, showing a state in which a part of the lid-tray is broken away. [Figure 14] 3 is a plan sectional view of the storage unit shown in FIG. 2, showing a state in which a part of the lid-tray is broken away. [Figure 15] FIG. 14 is an enlarged view of part XV in FIG. [Figure 16] 16 is a cross-sectional view taken along line XVI-XVI in FIG. 15. [Figure 17] FIG. 14 is an enlarged view of a portion XVII in FIG. [Figure 18] 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 17. [Figure 19] FIG. 2 is a perspective view of the pallet according to the embodiment, showing the state in which the lid tray is placed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The horizontal direction refers to the horizontal direction of the lid tray, the dual-purpose base, the container, the container body, or the pallet, and is one of the horizontal directions. The vertical direction refers to the vertical direction of the lid tray, the dual-purpose base, the container, the container body, or the pallet, and is one of the horizontal directions perpendicular to the horizontal direction. The height direction refers to the height direction of the container or the container body, and is the vertical direction (up and down direction). The outward direction refers to the direction toward the outside of the container or the container body, and the inward direction refers to the direction toward the inside of the container or the container body. The rectangular shape is not limited to a strict rectangular shape, and includes a shape that can be visually recognized as a rectangular shape overall, even if the corners are curved, for example. The rectangular frame shape is not limited to a strict rectangular frame shape, and includes a shape that can be visually recognized as a rectangular frame overall, even if the corners are curved or bent, or a part is cut off. In the drawings, "CD" indicates the horizontal direction, "LD" indicates the vertical direction, and "HD" indicates the height direction.

[0017] [Overview of Containment Unit 10] An overview of a containing unit 10 according to this embodiment will be described with reference to FIGS.

[0018] As shown in Figs. 1 to 4, the storage unit 10 according to the first embodiment is a unit for storing articles, and is used, for example, in a logistics system for transporting (carrying) or storing articles. The storage unit 10 shown in Fig. 1 includes a plurality of normal-sized containers 12 (12A) for storing articles, a tray 14 serving as a lid for the plurality of containers 12 (12A), and a tray 14 serving as a lid for the plurality of containers 12 (12A). The storage unit 10 shown in Fig. 2 includes a plurality of large-sized containers 12 (12B) for storing articles, a tray 14 serving as a lid for the plurality of containers 12 (12B), and a tray 14 serving as a lid for the plurality of containers 12 (12B).

[0019] The storage unit 10 shown in Fig. 3 includes a plurality of normal-sized containers 12 (12A), a plurality of lid trays 14 as lids for the plurality of containers 12 (12A), a plurality of lid trays 14 as trays for the plurality of containers 12 (12A), and a pallet 16 for transporting the plurality of containers 12 (12A). The storage unit 10 shown in Fig. 4 includes a plurality of large-sized containers 12 (12B), a plurality of lid trays 14 as lids for the plurality of containers 12 (12B), a plurality of lid trays 14 as trays for the plurality of containers 12 (12B), and a pallet 16 for transporting the plurality of containers 12 (12B).

[0020] [Specific configuration of container 12] Next, a specific configuration of the container 12 will be described with reference to FIGS.

[0021] (Container 12, container body 18) 5 and 6, the container 12 includes a box-shaped container body 18, which is made of a resin such as polypropylene and is formed by injection molding. The material of the container body 18 is not limited to resin, and may be a metal such as aluminum. The method of manufacturing the container body 18 is not limited to injection molding, and may be a manufacturing method other than injection molding.

[0022] (Bottom wall portion 20, side wall portion 22) 5 to 7, the container body 18 has a bottom wall 20 that is rectangular in plan view and that supports an article, and the bottom wall 20 extends in the vertical direction. The container body 18 has side walls 22 that rise from a pair of laterally opposing sides of the bottom wall 20. The pair of side walls 22 face each other in the horizontal direction, and each side wall 22 extends in the vertical direction.

[0023] (Upper opening UA, side opening SA, LA) 5 and 6, the container body 18 has an upper opening UA that is open at the top, a side opening SA that is open at one vertical side, and a side opening LA that is open at the other vertical side. The side opening LA of the container body 18 is connected to the upper opening UA. Note that the container body 18 does not need to have the other side opening LA as long as it has one side opening SA.

[0024] (Connection wall part 24, low wall part 26) 5, 6, and 8, the container body 18 has a connecting wall 24 formed above the side opening SA. The connecting wall 24 extends in the horizontal direction and connects one side ends of the pair of side walls 22. The container body 18 also has a bottom wall 26 rising from the side opening LA side of the bottom wall 20, and the bottom wall 26 is located below the side opening LA of the container body 18. The bottom wall 26 extends in the horizontal direction and connects the other side ends of the pair of side walls 22.

[0025] (Lower peripheral portion 18f, lower fitting portion 18p) 6 and 7, the lower end surfaces of the pair of side wall portions 22, the lower end surface of the portion of the container body 18 that is outwardly facing the lower edge portion of the side opening SA, and the lower end surface of the bottom wall portion 26 constitute a lower peripheral edge portion 18f of the container body 18 (containers 12). A lower fitting portion 18p that protrudes downward is formed on the inside of the lower peripheral edge portion 18f of the container body 18. The lower fitting portion 18p of the container body 18 (containers 12) corresponds to the lower portion of the bottom wall portion 20. When the containers 12 are stacked, the lower fitting portion 18p of the upper container 12 is configured to fit into the upper opening UA of the lower container 12.

[0026] (Side wall recess 28, side wall protrusion 30) As shown in Figures 5 and 9, a sidewall recess 28 recessed downward is formed near the side opening LA at the upper end of each sidewall portion 22, with the portion of each sidewall recess 28 on the upper opening UA side being closed and the portion of each sidewall recess 28 opposite the upper opening UA side being open. Also, as shown in Figure 7, a sidewall protrusion 30 protruding downward is formed near the bottom wall portion 26 at the lower end of each sidewall portion 22. As shown in Figure 9, the containers 12 are configured such that, when stacked, the sidewall protrusion 30 of the upper container 12 fits into the sidewall recess 28 of the lower container 12.

[0027] With the above-described configuration, when the multiple containers 12 are stacked, the sidewall protrusions 30 of the multiple containers 12 on the upper tier fit into the sidewall recesses 28 of the multiple containers 12 on the lower tier. This makes it possible to prevent misalignment between the multiple containers 12 on the upper tier and the multiple containers 12 on the lower tier.

[0028] (Door member 32) 6 to 8, the container 12 is provided with a rectangular door member 32 that opens and closes a side opening SA of the container body 18. The door member 32 extends in the lateral direction and is configured to be detachable from the container body 18. The door member 32 is made of a resin such as polypropylene, and is formed by injection molding. The material of the door member 32 is not limited to resin, and may be a metal such as aluminum. The manufacturing method of the door member 32 is not limited to injection molding, and may be a manufacturing method other than injection molding.

[0029] (Door support portion 33, guide groove 34, engagement groove 36) As shown in Figs. 6 and 7, a door support portion 33 that supports the inner side of each side end of the door element 32 is formed on the inside of each side wall portion 22, and the door support portion 33 extends in the vertical direction from the bottom wall portion 20 to the upper end of the container body 18. A guide groove 34 that guides each side end of the door element 32 in the vertical direction (height direction) is formed from each side edge of the side opening SA of the container body 18 to the upper end of the container body 18. Each guide groove 34 extends in the vertical direction, and the height dimension of each guide groove 34 is set to be larger than the height dimension of the door element 32. In addition, an engagement groove 36 that can engage with the lower end of the door element 32 is formed on the lower edge of the side opening SA of the container body 18. The engagement groove 36 extends in the horizontal direction, and both ends of the engagement groove 36 are connected to the lower ends of the guide grooves 34.

[0030] (Bulging portion 38, gripping portion 40, locking protrusion 42) 6 and 8, a bulging portion 38 that bulges outward is formed in the horizontal center of the upper end side of the door member 32, and the upper part of the bulging portion 38 serves as a handle portion for hanging on. A gripping portion 40 for holding with the hand is formed in the upper part of the bulging portion 38. In addition, a locking projection 42 that can be locked to the lower end of the connecting wall portion 24 is formed on the outer surface of the bulging portion 38. The door member 32 is configured so that the locking projection 42 locks to the lower end of the connecting wall portion 24 when the side opening SA of the container body 18 is closed.

[0031] [Specific configuration of the lid tray 14] Next, a specific configuration of the lid-tray 14 will be described with reference to FIGS.

[0032] (Overview of the lid / tray 14) 1 and 2, the lid tray 14 is used as a lid for covering the upper openings UA of the multiple containers 12 arranged horizontally, as described above, and is also used as a tray for placing the multiple containers 12. The lid tray 14 is made of a resin such as polypropylene, and is formed by injection molding. The material of the lid tray 14 is not limited to resin, and may be a metal such as aluminum. The method of manufacturing the lid tray 14 is not limited to injection molding, and may be a manufacturing method other than injection molding.

[0033] (Common base 44, support portion 46, storage portion 14p) As shown in Figs. 10 to 12, the lid tray 14 includes a rectangular multi-purpose base 44. The multi-purpose base 44 extends in the horizontal direction and is formed in a plate shape. The front surface of the multi-purpose base 44 is the upper surface of the multi-purpose base 44, and the back surface of the multi-purpose base 44 is the lower surface of the multi-purpose base 44. A rectangular frame-shaped support portion 46 that supports the lower peripheral portion 18f of the multiple containers 12 is formed on the peripheral portion of the multi-purpose base 44. The support portion 46 extends in the horizontal direction and protrudes upward from the upper surface (front surface) of the multi-purpose base 44. The support portion 46 has a flat upper surface portion 46a, an inner peripheral portion 46b located inside the upper surface portion 46a, and an outer peripheral portion 46c located outside the upper surface portion 46a. As shown in FIGS. 9 and 10, inside the support portion 46, a storage portion 14p for storing the lower fitting portions 18p of the multiple containers 12 is formed, and the storage portion 14p extends in the lateral direction.

[0034] (Support recess 48, support protrusion 50) As shown in Figs. 10 and 12, a pair of laterally opposing sides of the support portion 46 are formed with support recesses 48 recessed downward. The portion of each support recess 48 on the side of the storage portion 14p is closed, and the portion of each support recess 48 on the opposite side of the storage portion 14p is open. Also, as shown in Figs. 11 and 12, a support protrusion 50 protruding downward is formed at a position directly below each support recess 48 on the upper surface portion 46a of the support portion 46. Then, as shown in Figs. 9 and 13, the lid-tray 14 is configured so that when it covers the upper openings UA of the multiple containers 12, each support protrusion 50 fits into one of the side wall recesses 28 of the multiple containers 12. The lid-tray 14 is configured so that when the multiple containers 12 are stored in the storage portion 14p, each support recess 48 fits into one of the side wall protrusions 30 of the multiple containers 12.

[0035] (positioning protrusion 52) As shown in Figs. 12 to 14, a plurality of positioning protrusions 52 in the shape of a rectangular frame protruding downward are formed at intervals along the horizontal direction on the lower surface (back surface) of the combined base 44. Each positioning protrusion 52 can be fitted into the upper opening UA of the plurality of containers 12, and has the function of positioning the container 12 in the horizontal direction with respect to the combined base 44. Each positioning protrusion 52 has curved and bent parts at its corners, but is formed into a shape that can be visually recognized as a rectangular frame as a whole. Also, as shown in Figs. 13, 15, and 16, when the lid-tray 14 covers the upper openings UA of the plurality of containers 12, each positioning protrusion 52 is configured to enter the upper part of the corresponding guide grooves 34 of the plurality of containers 12 and be positioned above the door member 32. Note that the portion 52e of each positioning protrusion 52 that enters the guide groove 34 of the container 12 is formed into a shape that follows the guide groove 34 of the container 12.

[0036] 12, the lower end surface of each positioning protrusion 52 is located on the same plane as the lower end surface of the outer periphery 46c of the support part 46. This allows the lower end surface of the outer periphery 46c of the support part and the lower end surfaces of the positioning protrusions 52 to come into contact with the ground, allowing the multiple containers 12 to be stably placed on the support part.

[0037] 11, the multiple positioning protrusions 52 include two first positioning protrusions 52A having the same horizontal dimension, and two second positioning protrusions 52B having a horizontal dimension smaller than that of the first positioning protrusions 52A. The two first positioning protrusions 52A are disposed apart from each other in the horizontal direction, and the two second positioning protrusions 52B are disposed between the two first positioning protrusions 52A.

[0038] As shown in Fig. 13, when three normal-sized containers 12 are lined up horizontally, each first positioning protrusion 52A fits into the upper opening UA of the normal-sized container 12, and two second positioning protrusions 52B fit into the upper opening UA of the normal-sized container 12. Also, as shown in Fig. 14, when two large-sized containers 12 are lined up horizontally, one first positioning protrusion 52A and one second positioning protrusion 52B fit into the upper opening UA of the large-sized container 12.

[0039] In addition, if the horizontal dimension of the second positioning protrusion 52B is different from the horizontal dimension of the first positioning protrusion 52A, it may be larger than the horizontal dimension of the first positioning protrusion 52A. The number of the first positioning protrusions 52A may be three or more, and the number of the second positioning protrusions 52B may be one or three or more. If the horizontal dimension of the multiple second positioning protrusions 52B is different from the horizontal dimension of the first positioning protrusion 52A, the horizontal dimensions of the multiple second positioning protrusions 52B may not be the same. The arrangement of the first positioning protrusion 52A and the second positioning protrusion 52B may also be changed appropriately. The multiple positioning protrusions 52 are arranged in one row (one column) in the vertical direction, but may be arranged in multiple rows (multiple columns) in the vertical direction.

[0040] (Regulation protrusion 54) 13, 17, and 18, a downwardly protruding regulating protrusion 54 is formed between each pair of laterally adjacent positioning protrusions 52 on the underside of the combined base 44. The lid / tray 14 is configured such that, when it covers the upper openings UA of the multiple containers 12, one of the regulating protrusions 54 fits into the sidewall recesses 28 of each pair of laterally adjacent containers 12.

[0041] With the above-described configuration, when the lid-tray 14 covers the upper openings UA of the multiple containers 12, any one of the restricting protrusions 54 fits into the sidewall recesses 28 of each pair of laterally adjacent containers 12. This makes it possible to prevent the upper openings UA and side openings LA of the multiple containers 12 from being deformed.

[0042] (Base protrusion 56) 11, two base protrusions 56 protruding downward are formed on the underside of the combined base 44, and the two base protrusions 56 are arranged spaced apart in the lateral direction. The two base protrusions 56 are components for positioning the lid / tray 14 with respect to the pallet 16.

[0043] [Palette 16 composition, etc.] Next, the configuration of the pallet 16 will be described with reference to FIGS.

[0044] (Palette 16 Overview) As shown in Figures 3, 4, and 19, the pallet 16 is used when multiple containers 12 are transported (carried) by a forklift (not shown). The pallet 16 is made of resin such as polypropylene, and is formed by injection molding. The material of the pallet 16 is not limited to resin, and may be metal such as aluminum. The manufacturing method of the pallet 16 is not limited to injection molding, and may be a manufacturing method other than injection molding. The material of the pallet 16 is not limited to resin or metal, and may be wood.

[0045] (Placement area SF, pallet recess 58) As shown in Fig. 19, two mounting areas SF are formed on the upper surface of the pallet 16 for mounting a plurality of containers 12. In other words, two mounting areas SF are formed on the upper surface of the pallet 16 for mounting the lid / trays 14. Two pallet recesses 58 recessed downward are formed in each mounting area SF of the pallet 16, and the two pallet recesses 58 are spaced apart in the lateral direction. Each pallet recess 58 of the pallet 16 can be fitted into each base protrusion 56 of the combined base 44.

[0046] (End girder 60, intermediate girder 62, fork insertion path 64) As shown in Figs. 4 and 19, the pallet 16 has a pair of end beams 60 spaced apart in the horizontal direction, and each end beam 60 extends in the vertical direction. The pallet 16 has an intermediate beam 62 located midway between the pair of end beams 60, and the intermediate beam 62 extends in the vertical direction. A fork insertion path 64 for inserting the forks of a forklift is formed between the end beams 60 and the intermediate beams 62 adjacent in the horizontal direction. The storage unit 10 is configured such that when the multiple containers 12 are placed in each placement area SF of the pallet 16 via the lid-tray 14, a part of each second positioning protrusion 52B is located above the intermediate beam 62. Note that each end beam 60 may be divided in the vertical direction, and the intermediate beam 62 may be divided in the vertical direction.

[0047] With the above-mentioned configuration, when the containers 12 are placed on the respective placement areas SF of the pallet 16 via the lid tray 14, a portion of each of the second positioning protrusions 52B is located above the intermediate beam 62. When the containers 12 are placed on the respective placement areas SF of the pallet 16 via the lid tray 14, a portion of one side of each of the second positioning protrusions 52B and a portion of the side intersecting with the one side are located above the intermediate beam 62. Therefore, the containers 12 (12B) having a large size and a large horizontal dimension are supported between the end beam 60 and the intermediate beam 62. This makes it possible to stably transport the containers 12 (12B) using the pallet 16 while preventing the deformation of the pallet 16. In particular, since a portion of one side of each of the second positioning protrusions 52B and a portion of the side intersecting with the one side are located above the intermediate beam 62, the containers 12 (12B) can be transported more stably.

[0048] (Effects of this embodiment) Next, the effects of this embodiment will be described.

[0049] As described above, a rectangular frame-shaped support portion 46 is formed on the periphery of the combined base 44 to support the lower peripheral portion 18f of the multiple containers 12. A storage portion 14p is formed inside the support portion 46 to store the lower fitting portion 18p of the multiple containers 12. Therefore, the lid tray 14 can be used as a tray for placing multiple normal-sized containers 12 (12A) with a small horizontal dimension, or as a tray for placing multiple large-sized containers 12 (12B) with a large horizontal dimension. The lid tray 14 can also be used as a tray for placing multiple containers 12 with different horizontal dimensions. In addition, the spacing between the containers 12 can be reduced to increase the efficiency of mounting (loading) the containers 12 on the lid tray 14.

[0050] As described above, a plurality of rectangular frame-shaped positioning protrusions 52 capable of fitting into the upper openings UA of a plurality of containers 12 are formed on the underside of the combined base 44. Therefore, when the lid tray 14 is used as a lid for the upper openings UA of a plurality of containers 12, the plurality of containers 12 can be positioned with respect to the lid tray 14 while reducing the spacing between the containers 12.

[0051] As described above, the positioning protrusions 52 include two first positioning protrusions 52A having the same horizontal dimension and two second positioning protrusions 52B having a smaller horizontal dimension than the first positioning protrusions 52A. Therefore, the lid-tray 14 can be used as a lid that covers the upper openings UA of multiple normal-sized containers 12 (12A) having a small horizontal dimension, or as a lid that covers the upper openings UA of multiple large-sized containers 12 (12B) having a large horizontal dimension. The lid-tray 14 can also be used as a lid that covers the upper openings UA of multiple containers 12 having different horizontal dimensions.

[0052] Therefore, according to this embodiment, the mounting efficiency (loading efficiency) of the containers 12 on the lid tray 14 can be increased, while the versatility of the lid tray 14 can be increased.

[0053] According to the configuration of the storage unit 10 of this embodiment, when the lid tray 14 covers the upper openings UA of the multiple containers 12, the positioning protrusions 52 fit into the upper parts of the corresponding guide grooves 34 of the multiple containers 12 and are positioned above the door element 32. Therefore, when the lid tray 14 is used as a lid for the multiple containers 12, it is possible to prevent the door element 32 from floating up and to prevent the articles from going out through the side openings SA of the containers 12 during transport.

[0054] Furthermore, when the lid tray 14 covers the upper openings UA of the multiple containers 12, each of the support protrusions 50 fits into one of the side wall recesses 28 of the multiple containers 12. Therefore, when the lid tray 14 is used as a lid for the multiple containers 12, it is possible to prevent the multiple containers 12 from being displaced relative to the lid tray 14. Furthermore, when the multiple containers 12 are accommodated in the accommodation portion 14p, each of the support recesses 48 of the lid tray 14 fits into one of the side wall protrusions 30 of the multiple containers 12. Therefore, when the lid tray 14 is used as a tray for the multiple containers 12, it is possible to prevent the multiple containers 12 from being displaced relative to the lid tray 14.

[0055] Therefore, according to this embodiment, whether the lid tray 14 is used as a lid for multiple containers 12 or the lid tray 14 is used as a tray for multiple containers 12, the transport (carry) of items can be performed stably.

[0056] [Additional Notes] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in the embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0057] 10 Containment Unit 12 containers 12A Normal size container 12B Large size container 14 Lid and tray 16 palettes 18 Container body 18f Lower rim 18p Lower fitting part 20 Bottom wall 22 Side wall UA upper opening SA side opening LA lateral opening 24 Connecting wall section 26 Low wall 28 Side wall recess 30 Side wall protrusion 32 Door parts 33 Door support part 34 Guide groove 36 Engagement groove 38 Bulge 42 Locking protrusion 44 Multi-purpose base 46 Support part 46a Top part 46b Inner circumference 46c outer periphery 14p storage section 48 Support recess 50 Support protrusion 52 Positioning protrusion 52A First positioning protrusion 52B Second positioning protrusion 54 Regulating protrusion 56 Base protrusion SF loading area 58 Pallet recess 60 End girder 62 Intermediate girder 64 Fork insertion path

Claims

1. A plurality of containers that can be stacked vertically, have an upper opening that is rectangular in plan view and opens upward, and store items; A storage unit including: a lid body that is used to cover the upper openings of the plurality of containers; and a lid body / tray that is used as a tray for placing the plurality of containers, the lid tray can be used as a lid for covering the upper openings of the plurality of containers arranged in a horizontal direction, and can also be used to place the plurality of containers arranged in a horizontal direction; The plurality of containers are arranged in a state in which they are placed on the lid tray in a horizontal line, or in a state in which the plurality of containers are stacked in a horizontal line and are also arranged in a vertical line, A storage unit characterized in that the upper openings of the multiple containers arranged horizontally at the front side of the vertical direction and the multiple containers arranged horizontally at the back side of the vertical direction are each covered by a separate lid / tray.

2. The container has a container body having a side opening that is open on at least one side in a longitudinal direction, The plurality of containers arranged horizontally on the front side in the vertical direction are placed on the lid tray with the side opening opening on the one side facing the front side in the vertical direction, or the plurality of containers are stacked with the side opening opening on the one side facing the front side in the vertical direction, The storage unit described in claim 1, characterized in that the multiple containers lined up horizontally at the rear in the vertical direction are placed on the lid-tray with the side opening that opens to one side facing the rear in the vertical direction, or the multiple containers are stacked with the side opening that opens to one side facing the rear in the vertical direction.

3. The container has a door member that opens and closes the side opening, The container body includes: A pair of side openings opening on the one side and the other side in the vertical direction; a guide groove for vertically guiding each side end of the door member from each side edge of the side opening on the other side to an upper end of the container body; The lid tray is The storage unit according to claim 2, characterized in that, when covering the upper openings of the plurality of containers, the storage unit is configured to cover the upper portions of the door members inserted into the corresponding guide grooves of the plurality of containers.

4. A pallet having a pair of end beams separated laterally and an intermediate beam located intermediate the pair of end beams, The pallet has two placement areas formed on an upper surface thereof for placing the lid-tray thereon, The storage unit according to claim 1 , wherein the plurality of containers are placed in the placement area via the lid-tray.

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