Container

Abstract

To provide a container which can stabilize a storage state of an article.SOLUTION: A container 1 includes a first container 2 and second containers 3 which are opened upward and have substantially box shapes, and the first container 2 is configured to be capable of storing the plurality of second containers 3. The first container 2 includes a first container side regulation part 20 provided on the inner face side of a first long side side wall part 12. The second container 3 includes second container side regulation parts 46 which are provided on the outer surface side of a second short side side wall part 33, and can be engaged with the first container side regulation part 20 when being stored in the first container 2. The second container side regulation parts 46 (second container side engagement parts 48) are provided on at least both side parts or the peripheries of both side parts of the second short side side wall part 33, respectively. The first container side regulation part 20 and the second container side regulation part 46 are engaged with each other, which regulates relative displacement in a horizontal direction of the second container 3 with respect to the first container 2.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present invention relates to a container comprising a first container and a second container that can be accommodated in the first container. [Background technology]

[0002] 2. Description of the Related Art Conventionally, containers have been known that include a box-shaped first container (outer container) that opens upward, and a plurality of second containers (inner containers) that can be housed in the first container (see, for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-196406 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the first container is viewed from above with the second container housed therein, if there is a space inside the first container where the second container is not installed, there is a concern that when the container is moved, a certain second container will be relatively displaced along the inner bottom surface of the first container inside the first container, which may adversely affect the items housed in the second container. For this reason, it becomes necessary to install multiple second containers tightly inside the first container, for example by installing a second container that is not necessary for the purpose of housing a certain item, which may lead to a decrease in convenience and workability.

[0005] The present invention has been made to solve the problems exemplified above, and an object of the present invention is to provide a container that can stabilize the storage state of articles. [Means for solving the problem]

[0006] The following describes each of the means suitable for achieving the above objects. Note that, as necessary, the specific effects of the corresponding means will be added.

[0007] Means 1. A first container including a first bottom wall component having a generally rectangular shape in a plan view and a first side wall component extending upward from a peripheral portion of the first bottom wall component; A container including a second container having a second bottom wall component having a generally rectangular shape in a plan view and a second side wall component extending upward from a peripheral portion of the second bottom wall component, The first container is larger than the second container and configured to accommodate a plurality of the second containers; the first container includes a first container side regulating portion provided on an inner surface side of the first side wall portion, the second container includes a second container side regulating portion that is provided on an outer surface side of the second side wall portion and that can be brought into a locked state with respect to the first container side regulating portion when the second container is housed in the first container, The second container side regulating portion is provided at least on both side edges of the second side wall portion on which the second container side regulating portion is provided, or in the vicinity thereof, A container characterized in that the first container side regulating portion and the second container side regulating portion are configured to be in the engaged state, thereby regulating relative horizontal displacement of the second container with respect to the first container.

[0008] According to the first aspect, when the second container is accommodated in the first container, the first container side regulating portion and the second container side regulating portion are engaged with each other, and the horizontal relative displacement of the second container with respect to the first container is regulated. Therefore, when the container is moved, it is possible to prevent a situation in which a specific second container is relatively displaced along the inner bottom surface of the first container inside the first container, which adversely affects the articles accommodated in the second container. In particular, the second container side regulating portions are provided at least on both side edges of the second side wall portion on which the second container side regulating portions are provided, or in the vicinity thereof (they are provided in a pair at positions spaced apart from each other at least in the width direction of the second side wall portion on which the second container side regulating portions are provided), so that it is possible to more reliably prevent a situation in which the second container rotates with respect to the first container (the second container side regulating portion rotates around the second container side regulating portion when the container is viewed in a plan view), and the load when preventing the second container from being displaced can be shared by a plurality of second container side regulating portions. Furthermore, since each second container is equipped with a second container side regulating portion (the second container is prevented from shifting in position even when part of the inner bottom surface of the first container is visible when the container is viewed in a plan view), multiple second containers can be installed tightly inside the first container to prevent the second containers from shifting in position, thereby eliminating the need to install second containers that are not required for the purpose of storing specified items, thereby improving convenience and workability.

[0009] Means 2. The second container side regulating portion is provided on both side edges of the second side wall portion or in the vicinity thereof, and includes a second container side engaging portion, at least a part of which faces the outer surface of the second side wall portion at a position spaced apart from the second side wall portion toward the outside of the second container, the second container side engaging portion is configured such that an engaging opening portion is formed between the second side wall portion and the second side wall portion, the engaging opening portion opening to a lateral side of the second side wall portion and downward; The container described in Means 1 is characterized in that the first container side regulating portion is provided with a first container side locking portion that is inserted relative to the locking openings of each of the second container side locking portions of the second container when the second container is placed in the first container, and is locked with the second container side locking portions.

[0010] According to the second aspect, when the second container attempts to displace relative to the first container in the inward or outward direction of the first container (second container), the first container side locking portion comes into contact with the second container side locking portion or the second side wall portion of the second container, thereby restricting the relative displacement. In addition, since each second container side locking portion has a locking opening portion that opens not only downward but also to the side of the second side wall portion, it is possible to improve the workability (relative ease of inserting the first container side locking portion into the locking opening portion) when placing the second container in the first container, compared to, for example, a case in which the locking opening portion is shaped to open only downward.

[0011] Means 3. The second container side regulating portion includes a second container side intermediate locking portion that protrudes from the second side wall portion toward the outside of the second container at a position between the second container side regulating portions provided on both side edges of the second side wall portion or in the vicinity thereof, The container described in Means 1 is characterized in that the first container side regulating portion has an engaging portion that opens at least upward, and is equipped with a first container side intermediate engaging portion such that when the second container is placed in the first container, the second container side intermediate engaging portion of the second container is inserted relatively into the engaging portion to be in an engaged state.

[0012] According to Means 3, by combining a locking structure between the second container side intermediate locking portion and the first container side intermediate locking portion with a locking structure between a second container side regulating portion (the second container side locking portion described in Means 2 above) and a first container side regulating portion (the first container side locking portion described in Means 2 above) provided on both side edges of the second side wall portion or in their vicinity, it is possible to appropriately configure the second container to appropriately regulate the relative horizontal displacement of the second container with respect to the first container. For example, (when making it relatively easy to place the second container in the first container) one of the locking structures may regulate the relative displacement of the second container in the inward / outward direction of the first container, and the other locking structure may regulate the relative displacement of the second container in the width direction of the first side wall portion on which the first container side regulating portion is provided; (when making the stored state of the second container more stable to achieve more stable transportation of articles, etc.) both of the locking structures may regulate both the relative displacement of the first container in the inward / outward direction and the relative displacement of the first side wall portion in the width direction; or one of the relative displacements of the first container in the inward / outward direction and the relative displacement of the first side wall portion in the width direction may be regulated by both locking structures, and the other relative displacement may be regulated by one locking structure.

[0013] Means 4. The first container side locking portion is provided at a position spaced inward of the first container from the first side wall portion that faces the first container in the inward and outward direction, the first container includes a first container side connecting wall that connects between a predetermined first container side engaging portion and the first side wall portion that faces the first container side engaging portion, The container described in Means 2, characterized in that the first container side locking portion connected to the first container side connecting wall is configured to be able to lock with the second container side locking portion of another second container at the right and left portions sandwiched between the first container side connecting wall.

[0014] According to the fourth aspect, the first container side locking portion can be reinforced by the first container side connecting wall. Also, since the right and left parts of the first container side locking portion connected to the first container side connecting wall can lock different second containers, the configuration of the first container side regulating portion of the first container can be simplified. Furthermore, while efficiently utilizing the first storage portion, the second container side locking portion can be provided on the side of the second side wall portion or as close as possible to the side of the second side wall portion, and (by ensuring that the distance between the pair of second container side locking portions is as long as possible) it is possible to more reliably prevent the second container from rotating relative to the first container, and it is also possible to more freely arrange a separate configuration (for example, a portion that can be held when the second container stored in the first container is taken out from the first container) between the second container side locking portions.

[0015] Means 5. The second container is configured so that the second containers containing articles can be stacked one on top of the other, The second container includes a second container side vertical wall that protrudes from the second side wall portion to the outside of the second container and extends in the up-down direction, The second container side engaging portion is connected to the second container side vertical wall, The second container comprises: a support portion that is supported by contacting an upper edge portion of the second side wall portion of the lower second container when the second containers are stacked vertically; A container described in any of means 1 to 4, characterized in that it is provided with a connecting rib that protrudes outwardly from the second container, extends in the vertical direction, and connects between the support portion and the second container side vertical wall.

[0016] According to the fifth aspect, when the second containers are stacked vertically, the support portion and the connecting rib (if the connecting rib also serves as the support portion, the lower end of the connecting rib) abut against and support the upper edge portion of the lower second container. This makes it possible to stabilize the state in which the second containers are stacked. In addition, it is possible to reinforce the second container side vertical wall, and therefore the second container side locking portion connected to the second container side vertical wall, and the surrounding area.

[0017] Means 6. The container described in Means 5, characterized in that the second container side vertical wall or the connecting rib has a gradual change portion in which the protruding length from the second side wall portion gradually becomes shorter toward the bottom, and the protruding length from the second side wall portion of the portion of the second container side vertical wall connected to the second container side engaging portion is longer than the protruding length from the second side wall portion of the lower part of the connecting rib.

[0018] According to Means 6, when the second container is housed in the first container, it is possible to prevent the connecting rib of the second container and the vertical wall on the side of the second container from getting caught on the first container or another second container that has already been housed therein, thereby improving the workability when housing the second container in the first container, etc.

[0019] Means 7. A container as described in Means 2, characterized in that the upper corner of the first container side locking portion and the lower corner of the second container side locking portion are configured to extend in a direction inclined with respect to the relative displacement direction when the second container is placed relative to the first container.

[0020] According to the seventh aspect, when the second container is accommodated in the first container, if the relative positions of the first container side locking portion and the second container side locking portion are slightly misaligned in the width direction of the first side wall portion (second side wall portion), the first container side locking portion and the second container side locking portion guide the first container side locking portion and the second container side locking portion to relatively smoothly and accurately adjust the relative positions. Therefore, it is possible to improve the workability when accommodating the second container in the first container. Furthermore, it is possible to prevent damage to the upper corners of the first container side locking portion and the lower corners of the second container side locking portion. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view showing containers (a first container and a second container). [Diagram 2] FIG. 2 is a perspective view showing containers (a first container and a B-type second container). [Diagram 3] FIG. 2 is a plan view showing containers (first container and second container). [Figure 4]FIG. 2 is a perspective view showing a first container. [Diagram 5] FIG. 2 is a partially enlarged perspective view of the first container. [Figure 6] FIG. 2 is a partially enlarged plan view of the first container. [Figure 7] FIG. 2 is a partially enlarged cross-sectional view of the first container. [Figure 8] FIG. 2 is a perspective view showing a second container (A-type second container). [Figure 9] FIG. 2 is a perspective view showing the lower side of a second container (A-type second container). [Figure 10] FIG. 11 is a perspective view showing a second container (B-type second container). [Figure 11] FIG. 2 is a perspective view showing the lower side of a second container (B-type second container). [Figure 12] FIG. 2 is a partially enlarged perspective view including a partial cross section of a second container (A-type second container). [Figure 13] FIG. 2 is a partially enlarged perspective view showing the lower surface side of a second container (A-type second container). [Figure 14] FIG. 11 is a partially enlarged cross-sectional view of a second container (the side of a B-type second container where a second container-side regulating portion is provided). [Figure 15] FIG. 2 is a partially enlarged cross-sectional view of a second container (the side of the B-type second container where a second-container-side bulge is provided). [Figure 16] FIG. 2 is a partially enlarged perspective view including a cross section of the container (a first container and a pair of B-type second containers). [Figure 17] FIG. 2 is a partially enlarged perspective view including a cross section of a container (a first container and a pair of A-type second containers). [Figure 18] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 19] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 20] 4 is a cross-sectional view taken along line CC in FIG. [Figure 21] FIG. 13 is a perspective view showing a state in which a second container (A-type second container) is stacked. [Figure 22] FIG. 13 is a perspective view showing a state in which a second container (B-type second container) is stacked. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] An embodiment will be described below with reference to the drawings. As shown in Figs. 1 to 3, the container 1 includes a first container 2 having a substantially rectangular box shape that opens upward, and a second container 3 having a substantially rectangular box shape that opens upward and is accommodated in the first container 2. In this embodiment, the second container 3 includes an A-type second container 4 having a longitudinal width that fits just within the lateral width of the first container 2a formed inside the first container 2, and a B-type second container 5 (having a longitudinal width approximately half the longitudinal width of the A-type second container 4) that can be installed side by side such that the longitudinal width direction extends in the lateral width direction of the first container 2a. The short side width of the A-type second container 4 and the short side width of the B-type second container 5 are the same length, and the short side width direction extends in the longitudinal width direction of the first storage section 2a, so that the A-type second container 4 and the B-type second container 5 are arranged side by side in the first storage section 2a so that four of them fit in the first storage section 2a. The first container 2 and the second container 3 are each integrally formed from polypropylene.

[0023] 2, 4, and 5, the first container 2 includes a first bottom wall component 11 having a substantially rectangular shape in a plan view, a first long side wall portion 12 extending upward from a pair of opposing long side portions of the first bottom wall component 11, and a first short side wall portion 13 extending upward from a pair of opposing short side portions of the first bottom wall component 11. As shown in FIG. 16, the first bottom wall component 11 includes a bottom wall portion 14 having a substantially rectangular plate shape and constituting the inner bottom surface of the first container 2, and a grounding portion 15 located below the bottom wall portion 14 and grounded when the first container 2 is placed on a setting surface such as a floor surface. In this embodiment, the inner bottom surface of the bottom wall portion 14 facing the first storage portion 2a is entirely flat.

[0024] 4 and 5, the first container 2 includes an upper flange portion 16 protruding outward from the first container 2 from the upper edge portions of the first long side wall portion 12 and the first short side wall portion 13, a lower protruding portion 17 protruding outward from the first container 2 from the lower edge portions of the first long side wall portion 12 and the first short side wall portion 13 and extending downward from the tip portion in the protruding direction, and a vertical rib portion 18 connecting the upper flange portion 16 and the lower protruding portion 17. As shown in FIG. 16, the lower end portion of the lower protruding portion 17 is located above the ground portion 15. In this embodiment, the first containers 2 housing the second containers 3 are configured to be able to be stacked vertically, and when the first containers 2 are stacked, the grounding portion 15 of the upper first container 2 is inserted into the inside of the lower first container 2, and the lower protrusion 17 of the upper first container 2 abuts against and is supported by the upper flange portion 16 of the lower first container 2.

[0025] 4 and 5, each first long side sidewall 12 has a first container side bulge 19 formed to displace a range including the entire upper edge of the first long side sidewall 12 (for example, a range of approximately ¼ of the height of the first long side sidewall 12) outward from the first container 2. Also, on the inner surface side of each first long side sidewall 12, a first container side regulating portion 20 is provided at the lower edge of the first container side bulge 19 (the inner bottom surface of the first container side bulge 19) for regulating relative displacement in the horizontal direction of the second container 3 accommodated in the first container 2.

[0026] 5 to 7, the first container-side restricting portion 20 includes a first container-side locking portion 21 formed so as to extend a target portion of the first long-side sidewall portion 12 below the first container-side bulging portion 19 to above the lower edge of the first container-side bulging portion 19. In other words, the first container-side locking portion 21 is provided at a position spaced inward of the first container 2 from the first long-side sidewall portion 12 (the portion of the first long-side sidewall portion 12 at the first container-side bulging portion 19, the portion located above the lower edge of the first container-side bulging portion 19) that faces the first container 2 in the inside-outside direction (see FIG. 20). The first container side locking portion 21 may be adjacent to and connected to the first short side wall portion 13, or may be spaced apart from the first short side wall portion 13. A first container side connecting wall 22 is provided for the first container side locking portion 21 spaced apart from the first short side wall portion 13, connecting the center portion in the width direction of the first container side locking portion 21 to the first long side side wall portion 12 (opposing the first container side locking portion 21) in the first container side bulge portion 19. In this embodiment, a pair of first container side locking portions 21 lock one second short side side wall portion 33 of the second container 3, thereby restricting relative displacement of the second container 3 in the inward and outward directions of the first container 2. Furthermore, the first container side locking portion 21 connected to the first container side connecting wall 22 is configured so as to be able to lock another second container 3 at its right and left portions sandwiched between the first container side connecting wall 22 (see Figure 17).

[0027] As shown in Figs. 5 to 7, the first container side restricting portion 20 includes a first container side intermediate locking portion 23 that protrudes upward from the lower edge of the first container side bulging portion 19 at the center position between the pair of first container side locking portions 21. The surface of the first container side intermediate locking portion 23 on the inner side of the first container 2 is configured to be substantially flush with the inner surface of the portion of the first long side side wall portion 12 below the first container side bulging portion 19 (see Fig. 18), and the portion of the first container side intermediate locking portion 23 on the outer side of the first container 2 is connected to the inner surface of the portion of the first long side side wall portion 12 at the first container side bulging portion 19 (see Fig. 5). Furthermore, the first container side intermediate locking portion 23 is provided with a groove portion 24 as an engaged portion that opens upward and inwardly of the first container 2. In this embodiment, the first container side intermediate locking portion 23 locks one of the second short side wall portions 33 of the second container 3, thereby restricting relative displacement of the second container 3 in the lateral width direction of the first long side wall portion 12 (the longitudinal width direction of the first container 2). In addition, the portion of the lower edge of the first container side bulge 19 between the first container side locking portion 21 and the first container side intermediate locking portion 23 is inclined downward toward the inside of the first container 2. In addition, the "lower edge portion of the first container side bulge 19" refers to a portion (the inner bottom surface of the first container side bulge 19) that includes a connection portion with a portion of the first container side bulge 19 that is located below the first container side bulge 19 of the first long side sidewall 12, and has an upward facing surface portion, and the first container side regulating portion 20 may be provided at a position on the lower edge portion of the first container side bulge 19 (the inner bottom surface of the first container side bulge 19) that is spaced away from the connection portion with a portion of the first container side bulge 19 that is located below the first container side bulge 19 of the first long side sidewall 12, to the outside of the first container 2.

[0028] As shown in Figures 8 to 11, the second container 3 (a common configuration to the A-type second container 4 and the B-type second container 5) has a second bottom wall component 31 that is approximately rectangular in plan view, second long side wall portions 32 extending upward from a pair of opposing long side portions of the second bottom wall component 31, and second short side wall portions 33 serving as first opposing second side wall portions extending upward from a pair of opposing short side portions of the second bottom wall component 31. The second container 3 also has a second container side lateral wall 34 extending outwardly from the upper edge portion of each second short side sidewall portion 33 (or from a portion located slightly below the upper edge portion), an opposing wall 35 extending downwardly from a position on the second container side lateral wall 34 spaced outwardly of the second container 3 from the second short side sidewall portion 33 (in this example, the outer edge portion) and facing the outer surface of the second short side sidewall portion 33, and a second container side connecting wall 36 connecting the opposing wall 35 and the second short side sidewall portion 33 and extending in the vertical direction.

[0029] As shown in FIG. 1 and other figures, the second container 3 is provided with a holding corresponding portion 37 that is provided on the outer surface side of each second short side wall portion 33 and can hold the second container 3 accommodated in the first container 2 when the second container 3 is taken out from the first container 2. As shown in FIG. 12 to FIG. 14, the holding corresponding portion 37 in this embodiment has an opening 38 that opens upward in the second container side lateral wall 34 (penetrating the second container side lateral wall 34 in the vertical direction), and the inner side surface of the holding corresponding portion 37 is formed by the second container side connecting wall 36 that is provided so as to extend downward from the peripheral portion of the opening 38. In this embodiment, a pair of holding corresponding portions 37 (openings 38) are provided at a predetermined distance from each other in the horizontal width direction of each second short side side wall portion 33, sandwiching the horizontal width direction central portion of the second short side side wall portion 33. In addition, the second container 3 is configured so that no ribs or the like are formed directly below the opening 38 of the holding corresponding portion 37, and the holding corresponding portion 37 is shaped to penetrate the second container 3 in the vertical direction at the second container side wall 34.

[0030] Furthermore, the pair of second container side connecting walls 36 that define the width of each holding corresponding portion 37 in the width direction of the second short side sidewall portion 33 have a step portion 39 so that the lower end of the width of the holding corresponding portion 37 is wider than the upper end. In this embodiment, the second container side connecting wall 36 located between the pair of openings 38 is provided with a central step portion 40 at a position relatively close to the second container side lateral wall 34 in the vertical direction so that the lower step side is located closer to the center in the width direction of the second short side sidewall portion 33 than the upper step side. When an operator removes the second container 3 from the first container 2, the operator can insert his / her fingers into the pair of holding corresponding portions 37 provided on each of the second short side sidewall portions 33 and hook his / her fingertips on the central step portion 40 to hold the second container 3. In addition, in this embodiment, as a means for holding the corresponding holding portion 37, it is also possible to use a holding tool having a pair of straight portions extending vertically in parallel with each other and a bent portion extending in a direction away from each other from the pair of straight portions. That is, the straight portions of the holding tool are inserted from above into the openings 38 of the pair of corresponding holding portions 37, one side at a time, to engage the bent portion of the holding tool with the lower edge portion of the second container side connecting wall 36 located on the side of the second short side side wall portion 33 from the openings 38, and a rib (a side side auxiliary wall 45 described later) is configured to extend from the lower edge portion of the second container side connecting wall 36 toward the side of the second short side side wall portion 33. That is, a step portion 39 (side side step portion 41) is also provided on the lower edge portion of the second container side connecting wall 36. Note that instead of the step portion 39 (configuration forming a surface extending in a substantially horizontal direction), an inclined portion (configuration forming a surface facing downward and inclined with respect to the horizontal direction) may be provided. Here, the step portion 39 or inclined portion of the holding corresponding portion 37 refers to a portion of the holding corresponding portion 37 that faces downward and is formed within a range that can be reached by the operator's fingers or a holding tool.

[0031] 8, 10, etc., the second container 3 has a pair of upper and lower horizontal ribs 42 that protrude outward from the upper side of the second container 3 from the upper side of each second long side wall portion 32 and from a portion located slightly below the upper side. The upper horizontal rib 42 and the second container side horizontal wall 34 are provided so that their upper surfaces and tip edges extend continuously (while bending). Furthermore, at the boundary between the upper horizontal rib 42 and the second container side horizontal wall 34, a corner vertical wall 43 is provided that is connected to the lower surface of the boundary and extends in the vertical direction approximately parallel to the second container side connecting wall 36.

[0032] As shown in Fig. 12, Fig. 14, etc., the second container 3 includes a central auxiliary wall 44 that connects the lower edge of the second container side connecting wall 36 located between the openings 38 of a pair of holding corresponding parts 37 provided on each second short side side wall part 33, and a side side auxiliary wall 45 that connects the lower edge of the second container side connecting wall 36 located on the side side of the second short side side side wall part 33 from the openings 38 to the lower edge of the corner vertical wall 43. The central auxiliary wall 44 has a substantially straight cross section, and the side side auxiliary wall 45 has a substantially crank-shaped cross section. The holding tool may have a configuration in which the bent parts extend from the pair of straight parts in a direction approaching each other, and in this case, the bent parts of the holding tool can be engaged with the lower edge (step) of the central auxiliary wall 44. As shown in FIG. 12, of the pair of upper and lower horizontal ribs 42, the lower horizontal rib 42 is provided so as to extend continuously with the side auxiliary wall 45 (while bending).

[0033] 8, 10, etc., the second container 3 is provided with a second container-side regulating portion 46 that is provided on the outer surface side of the second short-side sidewall portion 33 and can be brought into a locked state with the first container-side regulating portion 20 when the second container 3 is housed in the first container 2. As shown in Figures 8, 9, etc., the A-type second container 4 is provided with the second container-side regulating portions 46 on both second short-side sidewall portions 33.

[0034] More specifically, as shown in Fig. 12, Fig. 13, etc., the second short-side sidewall 33 on which the second container-side regulating portion 46 is provided is provided with a second container-side vertical wall 47 that protrudes outward from the second short-side sidewall 33 at a position below each side-side auxiliary wall 45, extends in the up-down direction, and has an upper edge connected to the side-side auxiliary wall 45. Also, as shown in Fig. 8, Fig. 13, etc., the second container-side regulating portion 46 is provided with a second container-side locking portion 48 that protrudes downward from the lower surface of the side-side auxiliary wall 45 on the side of the second short-side sidewall 33 closer to the second container-side vertical wall 47 and is connected to the second container-side vertical wall 47. In other words, the second container-side regulating portion 46 (the second container-side locking portion 48 constituting the second container-side regulating portion 46) is provided on both side portions of the second short-side sidewall 33 or in the vicinity thereof. Furthermore, the second container side locking portion 48 is configured such that at least a portion thereof faces the outer surface of the second short side wall portion 33 at a position spaced outward from the second container 3 with respect to the second short side side wall portion 33. As shown in Figs. 12, 17, etc., the second container side locking portion 48 of this embodiment includes a locking portion main body 48a (see Fig. 20) that slopes downward toward a side away from the second short side side wall portion 33, and a peripheral rib 48b that protrudes outward from the second container 3 from a portion of the peripheral portion of the locking portion main body 48a that is not connected to the side side auxiliary wall 45 and the second container side vertical wall 47, and is flush with the edge portions of the adjacent side side auxiliary wall 45 and the second container side vertical wall 47 on the outer side of the second container 3.

[0035] 9, 13, etc., the second container side locking portion 48 is configured so that a locking opening 49 that opens to the side and downward of the second short side sidewall portion 33 is formed between the second container side locking portion 48 and the second short side sidewall portion 33. Then, as shown in Figs. 1, 17, and 20, when the second container 3 is accommodated in the first container 2, the first container side locking portions 21 are inserted relatively to the locking openings 49 of the second container side locking portions 48 of the second container 3, and are locked with the second container side locking portions 48. In this embodiment, the first container side locking portion 21 and the second container side locking portion 48 are locked together, thereby restricting relative displacement of the second container 3 in the inward and outward directions of the first container 2 (when the second container side locking portion 48 of the second container 3 is about to be displaced relatively inwardly of the first container 2, the second container side locking portion 48 abuts the first container side locking portion 21, and when the second container side locking portion 48 is about to be displaced relatively outwardly of the first container 2, the second container side locking portion 48 abuts against the inner surface of the first long side side wall portion 12 at the first container side bulge portion 19, or the first container side locking portion 21 abuts against the outer surface of the second short side side wall portion 33).

[0036] 8, 10, 13, etc., the second container side restricting portion 46 is provided with a second container side intermediate locking portion 51 that protrudes outward from the second short side wall portion 33 of the second container 3 at a position between the second container side locking portions 48. The second container side intermediate locking portion 51 of this embodiment has a rib shape extending in the vertical direction and is connected to the lower surface of the center side auxiliary wall 44. Then, as shown in FIG. 1 and FIG. 17 to FIG. 19, when the second container 3 is accommodated in the first container 2, the second container side intermediate locking portion 51 of the second container 3 is relatively inserted into the groove portion 24 of the first container side intermediate locking portion 23 to be locked with the first container side intermediate locking portion 23. In this embodiment, the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 are locked together, thereby restricting relative displacement of the second container 3 in the width direction of the first long side side wall portion 12 (the longitudinal width direction of the first container 2) (when the second container side intermediate locking portion 51 of the second container 3 is about to be relatively displaced in the longitudinal width direction of the first container 2, the second container side intermediate locking portion 51 will abut against the surface that constitutes the groove portion 24 of the first container side intermediate locking portion 23).

[0037] Therefore, when the second container 3 is placed in the first container 2, the second container side regulating portion 46 (second container side locking portion 48 and second container side intermediate locking portion 51) and the first container side regulating portion 20 (first container side locking portion 21 and first container side intermediate locking portion 23) can be brought into an engaged state, and by the first container side regulating portion 20 and the second container side regulating portion 46 being brought into an engaged state, the relative displacement of the second container 3 in the horizontal direction with respect to the first container 2 is regulated. In addition, the second container side regulating portion 46 and the holding corresponding portion 37 are provided on the outer surface side of the second short side sidewall portion 33 (the holding corresponding portion 37 is arranged between the second container side engaging portion 48 and the second container side intermediate engaging portion 51 in the width direction of the second short side sidewall portion 33), and the second container side regulating portion 46 is engaged from above with the first container side regulating portion 20 provided on the first container side bulge portion 19, so that when the second container 3 is contained in the first container 2, the holding corresponding portion 37 is arranged directly above (directly above) the lower edge portion (inclined portion) of the first container side bulge portion 19 (see Figures 17 and 18).

[0038] As shown in FIG. 3 and other figures, in this embodiment, the second containers 3 can be arranged in four rows with their short sides extending in the longitudinal direction of the first container 2. In the short side direction of the first container 2, the size is such that one A-type second container 4 can be accommodated, but two B-type second containers 5 can be accommodated in a row. As shown in FIG. 4, the first container side regulating portion 20 is provided in four sets corresponding to each first long side side wall portion 12, each set including a pair of first container side locking portions 21 and one first container side intermediate locking portion 23, and all of them have the same structure. Furthermore, as shown in FIG. 8 and FIG. 10, the second container side regulating portion 46 of the A-type second container 4 and the B-type second container 5 also have the same structure. For this reason, even when the second container 3 is contained alone in the first container 2 as shown in Figure 2, the horizontal displacement of the second container 3 relative to the first container 2 is restricted, and further, as shown in Figures 1 and 3, it is possible to appropriately change the arrangement and number of type A second containers 4 and type B second containers 5 contained in the first container 2.

[0039] 17 and other figures, the upper corners of the first container side locking portion 21 and the lower corners of the second container side locking portion 48 are configured to extend in a direction inclined with respect to the relative displacement direction (up and down direction) when the second container 3 is placed in relation to the first container 2. Furthermore, the width of the upper portion of the groove portion 24 of the first container side intermediate locking portion 23 is configured to gradually increase in width upward. In other words, if the position of the second container 3 is misaligned in the longitudinal width direction of the first container 2 when the second container 3 is placed in the first container 2, the slope of the lower corner of the second container side locking portion 48 will come into contact with the first container side connecting wall 22, or the slope of the upper corner of the first container side locking portion 21 will come into contact with the second container side vertical wall 47, guiding the second container 3 so that the second container side intermediate locking portion 51 is within the groove portion 24 of the first container side intermediate locking portion 23, and further, the second container side intermediate locking portion 51 is inserted into the groove portion 24 of the first container side intermediate locking portion 23 (a portion lower than the widening portion), thereby more reliably regulating the relative displacement of the second container 3 in the longitudinal width direction of the first container 2.

[0040] 10, 11, 14, and 15, in the case of a B-type second container 5 serving as a one-side locking type second container, a second container-side regulating portion 46 is provided in one second short side wall portion 33 together with a holding corresponding portion 37, but a second container-side regulating portion 46 is not provided in the other second short side wall portion 33. Instead, the other second short side side wall portion is provided with a second container-side bulge portion 52 formed below the holding corresponding portion 37 so as to displace the target portion of the second short side side wall portion 33 outward from the second container 3. As described above (as shown in Figs. 3 and 16), the B-type second containers 5 are configured to be accommodated in the first accommodation section 2a in a line with their longitudinal width direction extending along the transverse width direction of the first container 2, and by engaging the second container-side regulating portion 46 of each B-type second container 5 with the first container-side regulating portion 20, the (other) second short-side side wall portions 33 on which the second container-side regulating portion 46 is not provided are arranged adjacent to each other and facing each other. Furthermore, the second container-side bulging portion 52 extends in a substantially vertical direction, and the second container-side bulging portions 52 of the B-type second containers 5 arranged in a line in the transverse width direction of the first container 2 are arranged to substantially abut each other. In addition, when removing a pair of B-type second containers 5 arranged side by side in the short width direction of the first container 2 from the first container 2, it is also possible to remove the pair of B-type second containers 5 at once by holding the opposing walls 35 of the holding corresponding portions 37 of the adjacent second container side side walls 34 of the pair of B-type second containers 5 from one to the other in a pinching (squeezing) manner.

[0041] 21 and 22, the second containers 3 (each of the A-type second container 4 and the B-type second container 5) are configured so that the second containers 3 containing articles can be stacked one on top of the other. That is, as shown in Fig. 8 and 10, the second container 3 is provided with support parts 53 that protrude horizontally outward from the lower edge parts of the outer surfaces of the second long side wall parts 32 and the second short side wall parts 33, or from a position slightly above the lower edge parts, in correspondence with each corner part of the second container 3 (so as to extend while bending including the corner parts) (as shown in Fig. 11, in the B-type second container 5, the lower surface of the second container side bulge part 52 also serves as the support part 53). When the second containers 3 are stacked, the connecting rib 54 and support portion 53 of the upper second container 3 are supported by contacting the upper surfaces (including the upper edges of the first long-side sidewall portion 12 and the first short-side sidewall portion 13) of the second container 3 on the lower side. The B-type second containers 5 can be stacked in the same orientation as shown in Fig. 22(a), and can also be stacked in an orientation rotated 180 degrees from the orientation of the upper B-type second container 5 as shown in Fig. 22(b). 21, when the A-type second containers 4 are stacked, the openings 38 of all the corresponding holding parts 37 of the lower A-type second container 4 are exposed upward, and it is possible to hold the corresponding holding parts 37 of the lower A-type second container 4 to lift up multiple A-type second containers 4, or to use the corresponding holding parts 37 of the stacked A-type second containers 4 to bind multiple A-type second containers 4 with a band or the like. In addition, when the B-type second containers 5 are stacked, the openings 38 of the corresponding holding parts 37 provided corresponding to one of the second short side wall parts 33 of the lower B-type second container 5 are exposed upward, and therefore it is possible to hook the corresponding holding parts 37 on a hook or the like and slide them.

[0042] 8, 10, etc., the second short-side sidewall 33 on which the second container-side restricting portion 46 is provided is provided with a connecting rib 54 that protrudes from the second short-side sidewall 33 outward from the second container 3, extends in the vertical direction, and connects between the side edge of the support portion 53 and the lower edge of the second container-side vertical wall 47. In addition, the second container-side vertical wall 47 or the connecting rib 54 (in this example, in a portion near the connecting portion of the second container-side vertical wall 47 with the connecting rib 54) is configured to have a gradually changing portion 55 in which the protruding length from the second short-side sidewall 33 gradually decreases downward, and the protruding length from the second short-side sidewall 33 of the portion of the second container-side vertical wall 47 connected to the second container-side locking portion 48 is configured to be longer than the protruding length from the second short-side sidewall 33 of the lower portion of the connecting rib 54. In this embodiment, the length of protrusion of the connecting rib 54 of the A-type second container 4 from the second short-side sidewall 33 is constant, but the second long-side sidewall 32 and the second short-side sidewall 33 are slightly inclined so that the inner dimensions of the second container 3 gradually increase upward, and accordingly, the connecting rib 54 is also slightly inclined with respect to the vertical direction. Furthermore, as shown in Fig. 10 and Fig. 20, the length of protrusion of the connecting rib 54 of the B-type second container 5 from the second short-side sidewall 33 is basically constant, but the connecting rib 54 includes a position shift suppression portion 56 configured to have a slightly longer protrusion length from the second short-side sidewall 33 near the joint with the second container-side vertical wall 47 (gradual change portion 55). As a result, when the B-type second container 5 is contained in the first container 2 and the second container side regulating portion 46 is engaged with the first container side regulating portion 20, the gap between the connecting rib 54 (position shift suppression portion 56) and the first long side side wall portion 12 (the portion below the first container side bulge portion 19) is minimized, thereby further suppressing position shifts (wobbling) of the B-type second container 5.

[0043] 8, 10, etc., a vertical rib 57 is provided which extends upward from the side edge of the support portion 53 on the side not connected to the connecting rib 54 and connects to the horizontal rib 42. In addition, an auxiliary rib 58 is provided on the outer surface of the second long side sidewall portion 32 so as to connect the pair of upper and lower horizontal ribs 42 and extend downward beyond the lower horizontal rib 42. The protruding length of the lower part of the auxiliary rib 58 from the second long side sidewall portion 32 gradually decreases downward, and the lower end of the tip edge of the auxiliary rib 58 is configured to be continuous with the outer surface of the second long side sidewall portion 32. Because the lower part of the auxiliary rib 58 is configured in this manner, when the second container 3 is accommodated in the space next to a second container 3 that is already accommodated in the first container 2, as shown in Figure 1, etc., it is possible to prevent the lateral rib 42 of the second container 3 from getting caught on the lateral rib 42 of the second container already accommodated or the upper edge portion (upper flange portion 16) of the first short side side wall portion 13 of the first container 2, thereby preventing the accommodation operation from being hindered.

[0044] As described above in detail, according to this embodiment, when the second container 3 is accommodated in the first container 2, the first container side regulating portion 20 and the second container side regulating portion 46 are engaged with each other, and the relative displacement of the second container 3 in the horizontal direction with respect to the first container 2 is regulated. Therefore, when the container 1 is moved, it is possible to prevent a situation in which a given second container 3 is relatively displaced along the inner bottom surface of the first container 2 inside the first container 2, adversely affecting the articles accommodated in the second container 3. In particular, since the second container side regulating portion 46 includes the second container side locking portion 48 provided at least on both sides of the second short side wall portion 33 on which the second container side regulating portion 46 is provided or in the vicinity thereof, it is possible to more reliably prevent the second container 3 from rotating relative to the first container 2 (when the container 1 is viewed in plan, the second container 3 is rotated and displaced around the second container side locking portion 48), and the load when preventing the second container 3 from shifting in position can be shared by the multiple second container side locking portions 48. Furthermore, since each of the second containers 3 includes the second container side regulating portion 46 (the second container 3 is prevented from shifting in position even when a part of the inner bottom surface of the first container 2 is visible when the container 1 is viewed in plan), it is not necessary to install the second container 3 that is not required for the purpose of storing a specific item in order to prevent the second container 3 from shifting in position by installing multiple second containers 3 inside the first container 2 without any gaps, and this can improve convenience and workability. In addition, since the second container side locking portions 48 are provided on or near both sides of the second short side wall portion 33, the corresponding holding portions 37 and the like can be preferably provided (provided in a pair, each having a certain width) between the pair of second container side locking portions 48. In particular, the second container side locking portions 48 are provided closer to the side of the second short side side wall portion 33 than the ribs (the second container side vertical wall 47 and the connecting rib 54) extending in the up-down direction on the outer surface side of the second short side side wall portion 33, making it easier to confirm the position of the second container side locking portions 48 when placing the second container 3 in the first container 2, thereby improving workability, etc.

[0045] The second container side locking portion 48 faces the outer surface of the second short side wall portion 33 at a position spaced outward from the second container 3 with respect to the second short side wall portion 33, and is configured such that a locking opening 49 is formed between the second container side locking portion 48 and the second short side wall portion 33, opening to the lateral side of the second short side wall portion 33 and downward. In contrast, the first container side regulating portion 20 includes first container side locking portions 21 that are inserted relatively to the locking openings 49 of the second container side locking portions 48 of the second container 3 when the second container 3 is accommodated in the first container 2, respectively, and are locked with the second container side locking portions 48. Therefore, by locking the first container side locking portions 21 and the second container side locking portions 48, it is possible to regulate the relative displacement of the second container 3 accommodated in the first container 2 in the inward and outward directions of the first container 2. In addition, the shape of each second container side locking portion 48 has an locking opening 49 that opens not only downward but also on the lateral side of the second short side side wall portion 33, thereby improving workability when placing the second container 3 in the first container 2 (ease of inserting the first container side locking portion 21 into the locking opening 49) compared to, for example, a case in which the locking opening 49 is shaped to open only downward.

[0046] Furthermore, the second container side regulating portion 46 includes a second container side intermediate locking portion 51 that protrudes outward from the second short side sidewall portion 33 of the second container 3 at a position between the second container side locking portions 48 provided on both side portions of the second short side sidewall portion 33 or in the vicinity thereof. In addition, the first container side regulating portion 20 includes a first container side intermediate locking portion 23 that has a groove portion 24 that opens upward and toward the inside of the first container 2, and in which the second container side intermediate locking portion 51 of the second container 3 is relatively inserted into the groove portion 24 to be locked when the second container 3 is accommodated in the first container 2. Therefore, the locking structure between the second container side intermediate locking portion 51 and the first container side intermediate locking portion 23 and the locking structure between the second container side locking portion 48 and the first container side locking portion 21 can be combined to appropriately regulate the relative displacement of the second container 3 in the horizontal direction with respect to the first container 2. In this embodiment, the locking structure between the first container side locking portion 21 and the second container side locking portion 48 restricts the relative displacement of the second container 3 in the inward / outward direction of the first container 2, and the locking structure between the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 restricts the relative displacement of the second container 3 in the longitudinal width direction of the first container 2. For this reason, it is possible to make the task of housing the second container 3 in the first container 2 relatively easier (and further, it is possible to prevent a decrease in the strength of the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 and reduce the burden on the first container side locking portion 21 and the second container side locking portion 48) compared to a case in which, for example, both locking structures restrict the relative displacement of the second container 3 in the inward / outward direction of the first container 2 and the relative displacement in the longitudinal width direction of the first container 2, respectively.

[0047] In addition, the first container side locking portion 21 is provided at a position spaced inward of the first container 2 from the first long side wall portion 12 (in the first container side bulging portion 19) that faces the first container 2 in the inside-outside direction, and the first container 2 includes a first container side connecting wall 22 that connects the first container side locking portion 21 to the first long side wall portion 12 that faces the first container side locking portion 21. The first container side locking portion 21 connected to the first container side connecting wall 22 is configured to be able to lock with a second container side locking portion 48 of another second container 3 at its right and left portions sandwiching the first container side connecting wall 22. Therefore, the first container side locking portion 21 can be reinforced by the first container side connecting wall 22. In addition, since the right and left parts of the first container side locking part 21 connected to the first container side connecting wall 22 can lock different second containers 3, the structure of the first container side regulating part 20 of the first container 2 can be simplified. Furthermore, while efficiently utilizing the first storage part 2a, the second container side locking part 48 can be provided on the side of the second short side side wall part 33 or as close as possible to the side of the second short side side wall part 33, and (by ensuring that the distance between the pair of second container side locking parts 48 is as long as possible) it is possible to more reliably prevent rotational relative displacement of the second container 3 with respect to the first container 2, and a separate structure (such as the holding corresponding part 37) can be freely arranged between the second container side locking parts 48.

[0048] The second container 3 is configured so that the second containers 3 containing articles can be stacked vertically. Furthermore, the second container 3 includes a second container-side vertical wall 47 that protrudes from the second short-side side wall 33 to the outside of the second container 3 and extends in the vertical direction, and the second container-side locking portion 48 is connected to the second container-side vertical wall 47. In addition, the second container 3 includes a support portion 53 that is supported by abutting against the upper edge portion (upper flange portion 16) of the second long-side side wall 32 and the second short-side side wall 33 of the lower second container 3 when the second containers 3 are stacked vertically, and a connecting rib 54 that protrudes to the outside of the second container 3 and extends in the vertical direction, connecting the support portion 53 and the second container-side vertical wall 47. This makes it possible to stabilize the state in which the second containers 3 are stacked. In addition, the second container side vertical wall 47, and therefore the second container side locking portion 48 connected to the second container side vertical wall 47, and the surrounding area thereof can be reinforced.

[0049] Further, the second container side vertical wall 47 (connecting portion with the connecting rib 54) has a gradually changing portion 55 in which the protruding length from the second short side wall portion 33 gradually becomes shorter toward the bottom, and the protruding length from the second short side wall portion 33 of the portion of the second container side vertical wall 47 connected to the second container side locking portion 48 is longer than the protruding length from the second short side wall portion 33 at the lower portion of the connecting rib 54. For this reason, when the second container 3 is accommodated in the first container 2, it is possible to prevent the connecting rib 54 of the second container 3 and the second container side vertical wall 47 from getting caught on the first container 2 or another second container 3 that has been accommodated previously, and it is possible to improve the workability when accommodating the second container 3 in the first container 2.

[0050] Furthermore, the upper corners of the first container side locking portion 21 and the lower corners of the second container side locking portion 48 are configured to extend in a direction inclined with respect to the relative displacement direction when the second container 3 is accommodated in the first container 2. Therefore, when the relative positions of the first container side locking portion 21 and the second container side locking portion 48 are slightly shifted in the longitudinal width direction of the first container 2 when the second container 3 is accommodated in the first container 2, the inclined portions of the upper corners of the first container side locking portion 21 and the inclined portions of the lower corners of the second container side locking portion 48 guide the first container side locking portion 21 and the second container side locking portion 48 to a relatively smooth and accurate relative position. Therefore, the workability when accommodating the second container 3 in the first container 2 can be improved. Furthermore, damage to the upper corners of the first container side locking portion 21 and the lower corners of the second container side locking portion 48 can be prevented.

[0051] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0052] (a) In the above embodiment, the shapes and sizes of the first container 2 and the second container 3, the type of second container 3 that can be accommodated in the first container 2, and the like are not particularly limited and can be changed as appropriate. For example, the first container may be configured to be substantially circular in plan view and the second container may be substantially sector-shaped in plan view, or the first container 2 may be configured to be substantially rectangular in plan view and accommodate a second container that is substantially triangular in plan view. Furthermore, it is also possible to provide a third container that is not locked to the first container 2 but is locked to the second container 3 accommodated in the first container 2, a second container 3 that is not locked to either the first container 2 or the second container 3 but is accommodated in the first container 2, and a fourth container that can be accommodated in the first container 2 such that its relative displacement in the horizontal direction with respect to the first container 2 is restricted by abutting against a predetermined side wall portion of the first container 2.

[0053] (b) In the above embodiment, the positions and numbers of the first container side restricting portion 20 (first container side locking portion 21, first container side intermediate locking portion 23) in the first container 2 and the second container side restricting portion 46 (second container side locking portion 48, second container side intermediate locking portion 51) in the second container 3 are not particularly limited, and can be appropriately set depending on the shape and size of the second containers 3 to be accommodated in the first container 2 (if the first container side bulging portion 19 is provided, the first container side locking portion 21 and the first container side intermediate locking portion 23 can be appropriately arranged at the lower edge of the first container side bulging portion 19). For example, in the above embodiment, the first container side restricting portion 20 may be provided on at least one of the first long side wall portion 12 and the first short side wall portion 13. The second container side regulating portion 46 may be provided on at least one of the second long side wall portion 32 and the second short side wall portion 33. The first container side bulge portion 19 may be omitted (for example, a flange portion may be provided that protrudes from the inner surface of the first long side wall portion 12 toward the inside of the first container 2 and extends over the entire width direction of the first long side wall portion 12, and the upper surface side of the flange portion may be the formation range of the first container side regulating portion 20). In that case, however, it may be difficult to accommodate the second container 3 in the first container 2 due to the first accommodation portion 2a, or the flange portion and therefore the first container side regulating portion 20 may be easily damaged, so it is desirable to provide the first container side bulge portion 19.

[0054] Furthermore, the number of second container side regulating parts 46 (second container side locking parts 48, second container side intermediate locking parts 51) provided on a predetermined side wall part of the second container 3 may be three or more. However, in order to more reliably regulate the relative displacement of the second container 3 relative to the first container 2, such as rotation (rotational displacement in plan view), it is preferable that the second container side regulating parts 46 (second container side locking parts 48) capable of regulating the relative displacement of the second container 3 in the inward and outward directions of the first container 2 are provided in at least a pair at positions spaced apart from each other in the width direction of the target side wall part (in the above embodiment, the second short side side wall part 33), and further, it is preferable that they are provided as close as possible to the side edge part of the target side wall part or in the vicinity thereof (the distance between the second container side regulating parts 46 close to the side edge part of the target wall part is as large as possible). Here, in this embodiment, "the side edge of the target side wall portion or its vicinity" refers to a position closer to the side edge of the second short side side wall portion 33 than the corresponding holding portion 37 in the width direction of the second short side side wall portion 33 corresponding to the target side wall portion, and also refers to a position closer to the side edge of the second short side side wall portion 33 than (all) ribs (the second container side vertical wall 47 and the connecting rib 54) that are provided on the outer surface side of the second short side side wall portion 33 and extend in the up-down direction (from approximately the upper edge to approximately the lower edge of the second short side side wall portion 33). Note that even if only "the side edge of the target side wall portion" is described, it is intended to include "the side edge of the target side wall portion or its vicinity." In addition, in the above embodiment, the second container side regulating portion 46 on one of the second short side side wall portions 33 of the second container 3 is configured to be engaged by a pair of first container side locking portions 21 of the first container 2 and the first container side intermediate locking portion 23 therebetween. However, for example, a second container having a second container side regulating portion engaged by four first container side locking portions 21 and the first container side intermediate locking portion 23 therebetween may be configured to be able to be accommodated in the first container, or a first container side locking portion 21 that is not engaged with the second container side locking portion may be present between a pair of first container side locking portions 21 that are each engaged with a pair of second container side locking portions of a specific second container.

[0055] (c) Furthermore, in the above embodiment, the first container side locking portion 21 and the second container side locking portion 48 are locked to regulate the relative displacement of the second container 3 contained in the first container 2 in the inward / outward directions of the first container 2, and the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 are locked to regulate the relative displacement of the second container 3 contained in the first container 2 in the longitudinal width direction of the first container 2. However, it is sufficient that at least one of the locking structures between the first container side locking portion 21 and the second container side locking portion 48 and the locking structure between the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 is configured to regulate the relative displacement of the second container 3 contained in the first container 2 in the inward / outward directions of the first container 2, and at least the other to regulate the relative displacement of the second container 3 contained in the first container 2 in the longitudinal width direction of the first container 2. For example, (when making the storage state of the second container 3 more stable to transport articles more stably) both of the locking structures may be configured to restrict both the relative displacement in the inward / outward direction of the first container 2 and the relative displacement in the longitudinal width direction of the first container 2, or one of the relative displacement in the inward / outward direction of the first container 2 and the relative displacement in the longitudinal width direction of the first container 2 may be restricted by both of the locking structures and the other relative displacement may be restricted by one of the locking structures. In the above embodiment, when the first container side intermediate locking portion 23 and the second container side intermediate locking portion 51 are omitted, the relative displacement of the second container 3 in the longitudinal width direction of the first container 2 is also restricted by the first container side locking portion 21 and the second container side locking portion 48 in the locked state. In addition, when the second container 3 is stored in the first container 2, the holding corresponding portion 37 (opening 38) is arranged between the first container side locking portions 21.

[0056] (d) In the above embodiment, a pair of the holding corresponding parts 37 are provided corresponding to each of the second short side sidewall parts 33, but one holding corresponding part 37 may be provided corresponding to each of the second short side sidewall parts 33 (the central side step part 40 is omitted), or three or more holding corresponding parts 37 may be provided (for example, the central side step part 40 and the side side step part 41 are formed in different holding corresponding parts 37). In addition, the holding corresponding part 37 may be configured to be held by at least one holding means (such as a worker's hand or a holding tool), and the shape, number, arrangement, etc. can be appropriately changed depending on the holding means. The shape of the holding tool can be appropriately changed depending on the shape of the second container 3, etc., and the holding tool may be configured as a tool that the worker can hold by hand and use, or as an attachment that is attached to a work machine such as a robot or a forklift. In addition, the holding corresponding part 37 can be omitted.

[0057] Furthermore, in the above embodiment, the support portion 53 protruding horizontally outward from the second container 3 may be omitted. In that case, the lower end portion of the connecting rib 54 (and the vertical rib 57) serves as the support portion (the connecting rib 54 also serves as the support portion), and when the second containers 3 are stacked one on top of the other, the lower end portion of the connecting rib 54 (and the vertical rib 57) abuts against the upper edge portion of the side wall portion (second short side wall portion 33) of the lower second container 3 for support.

[0058] (e) In the above embodiment, the first container 2 and the second container 3 are made of polypropylene, but they may be made of other polyolefin resins (polyethylene, etc.) or synthetic resins other than polyolefins (e.g. ABS resin, AES resin, acrylic resin, polycarbonate, etc.). [Explanation of symbols]

[0059] 1...container, 2...first container, 2a...first storage section, 3...second container, 4...A-type second container, 5...B-type second container, 11...first bottom wall forming section, 12...first long side wall section, 13...first short side wall section, 19...first container side bulge section, 20...first container side restricting section, 21...first container side locking section, 22...first container side connecting wall, 23...first container side intermediate locking section, 24...groove section, 31...second bottom wall forming section forming portion, 32...second long side side wall portion, 33...second short side side wall portion, 34...second container side horizontal wall, 35...opposing wall, 36...second container side connecting wall, 44...central auxiliary wall, 45...side edge auxiliary wall, 46...second container side regulating portion, 47...second container side vertical wall, 48...second container side locking portion, 49...opening locking portion, 51...second container side intermediate locking portion, 53...support portion, 54...connecting rib, 55...gradual change portion.

Claims

1. A first container including a first bottom wall component having a generally rectangular shape in a plan view and a first side wall component extending upward from a peripheral portion of the first bottom wall component; A container including a second container including a second bottom wall component having a generally rectangular shape in a plan view and a second side wall component extending upward from a peripheral portion of the second bottom wall component, The first container is larger than the second container and configured to accommodate a plurality of the second containers; the first container includes a first container side regulating portion provided on an inner surface side of the first side wall portion, the second container includes a second container-side regulating portion that is provided on an outer surface side of the second side wall portion and that is capable of being brought into a locked state with respect to the first container-side regulating portion when the second container is housed in the first container, The second container side regulating portion is provided at least on both side edges of the second side wall portion on which the second container side regulating portion is provided, or in the vicinity thereof, A container characterized in that the first container side regulating portion and the second container side regulating portion are configured to be in the engaged state, thereby regulating relative horizontal displacement of the second container relative to the first container.

2. the second container side regulating portion is provided on each of both side edges of the second side wall portion or in the vicinity thereof, and includes a second container side engaging portion, at least a portion of which faces an outer surface of the second side wall portion at a position spaced outwardly of the second container from the second side wall portion; the second container side engaging portion is configured such that an engaging opening portion is formed between the second side wall portion and the second side wall portion, the engaging opening portion opening to a lateral side of the second side wall portion and downward, The container described in claim 1, characterized in that the first container side regulating portion is provided with a first container side locking portion that is inserted relatively to the locking openings of each of the second container side locking portions of the second container when the second container is accommodated in the first container, and is locked with the second container side locking portions.

3. the second container side regulating portion includes a second container side intermediate locking portion that protrudes from the second side wall portion toward the outside of the second container at a position between the second container side regulating portions provided on both side edges of the second side wall portion or in the vicinity thereof, The container described in claim 1, characterized in that the first container side regulating portion has an engaging portion that opens at least upward, and is equipped with a first container side intermediate engaging portion such that when the second container is placed in the first container, the second container side intermediate engaging portion of the second container is inserted relatively into the engaging portion to be in an engaged state.

4. the first container side engaging portion is provided at a position spaced inward of the first container from the first side wall portion opposing the first container side engaging portion in an inward / outward direction of the first container, the first container includes a first container side connecting wall that connects between a predetermined first container side engaging portion and the first side wall portion that faces the first container side engaging portion, The container described in claim 2, characterized in that the first container side locking portion connected to the first container side connecting wall is configured to be able to lock with the second container side locking portion of another second container at the right and left portions sandwiched between the first container side connecting wall.

5. The second container is configured so that the second containers containing articles can be stacked one on top of the other, The second container includes a second container side vertical wall that protrudes from the second side wall portion to an outer side of the second container and extends in a vertical direction, The second container side engaging portion is connected to the second container side vertical wall, The second container comprises: a support portion that is supported by contacting an upper edge portion of the second side wall portion of the lower second container when the second containers are stacked vertically; A container as described in any one of claims 1 to 4, characterized in that it is provided with a connecting rib that protrudes outwardly from the second container, extends in the vertical direction, and connects between the support portion and the second container side vertical wall.

6. The container described in claim 5, characterized in that the second container side vertical wall or the connecting rib has a gradual change portion in which the protruding length from the second side wall portion gradually becomes shorter toward the bottom, and the protruding length from the second side wall portion of the portion of the second container side vertical wall that is connected to the second container side engaging portion is longer than the protruding length from the second side wall portion of the lower part of the connecting rib.

7. A container as described in claim 2, characterized in that the upper corner of the first container side locking portion and the lower corner of the second container side locking portion are configured to extend in a direction inclined with respect to the relative displacement direction when the second container is placed relative to the first container.

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