JP5682964B2 - container - Google Patents

Description

  The present invention is a container having a plurality of raised support protrusions on the outer surface and a plurality of protrusion receiving grooves on the inner surface, and depending on the orientation of the container when stacked, the upper support of the upper container The present invention relates to a container that can be changed between a nesting state in which the protrusion is received in the protrusion receiving groove of the lower container and a stacking state in which the stacking support protrusion of the upper container is in contact with the upper surface of the side wall of the lower container .

  In the following description, stacking a plurality of containers in a stacking state is simply referred to as “stacking containers” as appropriate, and stacking a plurality of containers in a nesting state is simply referred to as “nesting containers” as appropriate. To do.

  Conventionally, as this type of container, as shown in FIG. 23, a container provided with one stacking support protrusion in the vicinity of the corner of the container on each side wall is known. These stacking support protrusions are located near the center of the stacking support protrusions 3 that are located relatively far from the corners in the region near the corners, and near the ends that are relatively close to the corners. It is divided into a stacking support protrusion 4. And in a pair of 1st side walls 1 and 1 which opposed in the 1st horizontal direction H1 among containers, the same one end side stacking support protrusion in both these 1st side walls 1 and 1 is a center side stacking support protrusion. While forming the portion 3, the same stacking support protrusion on the other end side is a near end stacking support protrusion 4. In addition, in the pair of second side walls 2 and 2 that face each other in the second horizontal direction H2, the pair of stacked support protrusions of one second side wall 2 together form the near end stack support protrusions 4 and 4. On the other hand, although not shown in FIG. 23, a pair of stacked support protrusions on the other second side wall 2 are both centered stack support protrusions 3. As a result, any of the stacked support protrusions is asymmetric with respect to the other stack support protrusions, and nesting and stacking are possible.

  By the way, in a container having such a structure, work efficiency can be improved by performing a so-called slide stacking operation in which the upper container is inclined and the stacking support protrusion is slid against the upper surface of the side wall of the lower container. Will improve. In particular, when stacking, as shown in FIG. 23, when the pair of center-side stacking support protrusions 3, 3 of the upper container are slid on the upper surface of the first side wall 1 of the lower container, During sliding, the upper container stacking support protrusion is not received in the lower container protrusion receiving groove, and the upper end of the sliding direction of the upper container contacts the inner surface of the lower container. Then, the stacking is completed simply by returning the upper container to the horizontal posture, so that the operation efficiency is greatly improved by performing the slide stacking operation (see, for example, Patent Document 1). In the following description, stacking by slide stacking operation is appropriately referred to as “slide stacking”.

Japanese Patent No. 3998693 (FIG. 6)

  However, in the conventional container described above, in the middle of the slide stacking operation, the upper support protrusion of the upper container is detached from the upper surface of the side wall of the lower container, and the upper container falls into the lower container. May occur.

  This invention is made | formed in view of the said situation, and aims at provision of the container which can perform a slide stacking operation stably.

  In order to achieve the above object, the container according to the invention of claim 1 has a box-shaped structure with an open top surface, and a plurality of stacked supports formed to protrude downward from an intermediate position in the vertical direction on the outer surface thereof. A container including a protrusion and a plurality of protrusion receiving grooves recessed upward from an intermediate position in the vertical direction on the inner side surface, the container being a first of the first horizontal direction and the second horizontal direction orthogonal to each other One stacking support protrusion is provided in the vicinity of the corner portion of the container in the pair of first side walls opposed in the horizontal direction, and the stacking support protrusion on one end side in the second horizontal direction on both the first side walls. Is the center-side stacking support projection that is relatively far from the corner of the container than the stacking support projection on the other end, while the stacking support projection on the other end is relatively close to the corner of the container. Use the side-by-side support protrusion and above the container Depending on whether the container is rotated 180 degrees or stacked without rotating, the nesting state in which the upper container loading support protrusion is received in the protrusion receiving groove of the lower container, and the upper container In a container that can be changed to a stacking state in which the stacking support protrusion is in contact with the upper surface of the first side wall of the lower container, the center-side stacking support protrusion and the corner of the outer surfaces of the pair of first side walls When the upper container is inclined and the center-side stacking support protrusion is abutted against the upper surface of the first side wall of the lower container, the first side wall and the lower container of the upper container It has the characteristic in the 1st deviation control protrusion part arrange | positioned between these 1st side walls protrudingly formed.

  The container according to the invention of claim 2 has a box-shaped structure with an open upper surface, and a plurality of stacked support protrusions that are formed to protrude downward from an intermediate position in the vertical direction on the outer surface, and a vertical direction on the inner surface. A plurality of protrusion receiving grooves that are recessed above the intermediate position of the container, wherein one stacking support protrusion is provided in the vicinity of the corner of the container on each side wall, and is orthogonal to each other. In the pair of first side walls facing each other in the first horizontal direction among the horizontal direction and the second horizontal direction, the product support protrusions on one end side in the second horizontal direction on both the first side walls are stacked on the other end side. While the upper support protrusion is a center-side stacking support protrusion that is relatively far from the corner of the container, the stacking support protrusion on the other end is relatively close to the corner of the container. And a pair of second side walls opposed in the second horizontal direction Is a pair of stacking support projections on one second side wall, and a pair of stacking support projections on the other second side wall that are relatively far from the corner of the container than the pair of stacking support projections on the other side wall. One pair of stacking support projections on the other second side wall are both end stacking support projections relatively close to the corner of the container, and another container is placed 180 degrees above the container. The nesting state in which the upper container loading support protrusion is received in the protrusion receiving groove of the lower container and the upper container loading support protrusion depending on whether it is swung up or stacked without turning. In the container that can be changed to a stacking state in which the first and second side walls of the lower container are in contact with the upper surface of the lower container, the center-side stacked support protrusion and the corner portion of the outer surfaces of the pair of first side walls Between the The first side wall of the upper container and the first side wall of the lower container when the na is tilted and the stacking support protrusion near the center of the first side wall is abutted against the upper surface of the first side wall of the lower container The first displacement restricting protrusion disposed between the first side wall and the second side wall is protruded and the upper container is inclined between the outer side surface of the second side wall and the corner portion. When the upper side support protrusions of the two side walls are abutted against the upper surface of the second side wall of the lower container, they are arranged between the second side wall of the upper container and the second side wall of the lower container. This is characterized in that the second displacement restricting protrusion is formed to protrude.

  The container according to the invention of claim 3 has a box-shaped structure with an open upper surface, and a plurality of stacked support protrusions that are formed to protrude downward from an intermediate position in the vertical direction on the outer surface, and a vertical direction on the inner surface. A plurality of protrusion receiving grooves recessed above the intermediate position of the first and second pairs of first and second horizontal directions orthogonal to each other in the second horizontal direction. One stacking support projection is provided near the corner of the container on the two side walls, and a pair of stacking support projections on one second side wall is connected to a pair of stacking projections on the other second side wall. While it is set as a center-side stacked support protrusion that is relatively far from the corner of the container than the support protrusion, the pair of stack support protrusions on the other second side wall are both relatively close to the corner of the container. Use a close-up support protrusion and above the container The nesting state in which the upper container loading support protrusion is received in the protrusion receiving groove of the lower container depending on whether another container is rotated 180 degrees and stacked without being rotated, and the upper container In the container that can be changed to a stacking state in which the stacking support protrusion of the second container is in contact with the upper surface of the second side wall of the lower container, the stacking support protrusion and the corner closer to the center of the outer surface of one of the second side walls When the upper container is inclined and the stacking support protrusion near the end of the second side wall abuts against the upper surface of the second side wall of the lower container, the second side wall of the upper container And the second side wall of the lower container is characterized in that a second displacement restricting protrusion is formed to protrude.

  According to a fourth aspect of the present invention, in the container according to the second or third aspect, the lower end portion of the loading support protrusion is disposed above the lower end of the outer side surface of the container, and the end of the other second side wall on the outer side surface The upper container is tilted at a position below the side stacking support projection and facing the second displacement restricting projection in the second horizontal direction so that the end side stacking support projection on the second side wall When the container is abutted against the upper surface of the second side wall of the container, the third displacement restricting protrusion disposed between the second side wall of the upper container and the second side wall of the lower container is formed to protrude. Has characteristics.

[Invention of Claim 1]
In the container according to claim 1, the pair of center-side stacking support protrusions of the upper container are abutted against the upper surfaces of the pair of first side walls of the lower container, and the upper container is slid in an inclined state. Slide stacking operation can be performed. During the slide stacking operation, the pair of first shift restriction protrusions of the upper container are arranged in the gap between the first side wall of the upper container and the first side wall of the lower container. The lateral displacement of the container is suppressed, and it is possible to prevent the occurrence of a situation in which the center-side stacking support protrusion of the upper container comes off from the first side wall of the lower container. Thereby, a stable slide stacking operation becomes possible.

[Invention of claim 2]
In the container according to claim 2, the pair of center-side stacking support protrusions of the pair of first side walls in the upper container are abutted against the upper surfaces of the pair of first side walls of the lower container, and the upper container is Sliding and stacking operation to slide in the tilted state, the stacking support protrusion near the end of the second side wall of the upper container is abutted against the upper surface of the second side wall of the lower container, and the upper container is tilted The slide stacking operation can be performed. Then, during one slide stacking operation, the pair of first misalignment restricting protrusions of the upper container is disposed in the gap between the first side wall of the upper container and the first side wall of the lower container. The horizontal displacement of the upper and lower containers is suppressed, and during the other slide stacking operation, the second displacement restricting protrusion of the upper container is located between the second side wall of the upper and lower containers and the second side wall of the lower container. Arranged in the gap, horizontal displacement of the upper and lower containers is suppressed. Accordingly, during the slide stacking operation, it is possible to prevent the occurrence of a situation in which the stacking support protrusion of the upper container is detached from the first side wall or the second side wall of the lower container, and stable slide stacking is possible. Operation becomes possible.

[Invention of claim 3]
In the container according to claim 3, slide stacking is made such that the stacking support protrusion near the end of the second side wall of the upper container is abutted against the upper surface of the second side wall of the lower container and the upper container is tilted and slid. Operation. During the slide stacking operation, the second displacement restricting protrusion of the upper container is disposed in the gap between the second side wall of the upper container and the second side wall of the lower container, so that the upper and lower containers Lateral misalignment is suppressed, and it is possible to prevent a situation in which the near-end stacking support protrusion of the upper container comes off from the second side wall of the lower container. Thereby, a stable slide stacking operation becomes possible.

[Invention of claim 4]
According to the container of the fourth aspect, when the slide stacking operation is performed in which the upper side stacking support protrusion of the upper container is brought into contact with the upper surface of the second side wall of the lower container, the second shift of the upper container is performed. The restriction protrusion and the third displacement restriction protrusion are disposed in a gap between the second side wall of the upper container and the second side wall of the lower container. As a result, the horizontal displacement of the upper and lower containers during the slide stacking operation is more reliably suppressed, and a more stable slide stacking operation is possible.

The perspective view of the container which concerns on 1st Embodiment of this invention. The perspective view of the container seen from the direction different from FIG. Perspective view of the bottom side of the container Bottom view of container A bottom view enlarging the vicinity of the corner of the container Enlarged perspective view near the corner of the container Enlarged perspective view near the corner of the container The perspective view which expanded the 1st side wall The top view which expanded the 1st side wall The perspective view which fractured | ruptured a part of 1st side wall Perspective view of container during slide stacking An enlarged perspective view of a part of a container during slide stacking Sectional drawing of the container in A cut surface of FIG. The partial expanded sectional view of the container in A cut surface of FIG. The partial expanded sectional view of the container in A cut surface of FIG. Perspective view of stacked containers Perspective view of nested container The perspective view of the container of 2nd Embodiment The perspective view of the container seen from the direction different from FIG. Bottom view of container A bottom view enlarging the vicinity of the corner of the container The bottom view which expanded the corner part neighborhood of the container concerning a modification A perspective view of a conventional container

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the container 10 of the present embodiment has a box-like structure with an open top surface, and its bottom wall 16 has a mesh structure and a rectangular shape as shown in FIG. And while a pair of side wall arrange | positioned at the short side part in the outer edge part of the bottom wall 16 makes a pair of 1st side walls 11 and 11 which concern on this invention, a pair of side wall arrange | positioned at the long side part Is a pair of second side walls 12, 12 according to the present invention. The first and second side walls 11 and 12 are inclined so as to extend obliquely outward and upward from the bottom wall 16 (see FIG. 13).

  As shown in FIG. 1, a plurality of rectangular through holes 17 are partially formed at lower positions of the first and second side walls 11, 12, and the first and second side walls 11, 12 are formed. Part of has a mesh structure. In this embodiment, the direction parallel to the long side of the bottom wall 16 corresponds to the first horizontal direction H1 of the present invention, and the direction parallel to the short side of the bottom wall 16 is the second horizontal direction H2 of the present invention. It corresponds to.

  As shown in FIG. 1, the container 10 includes an upper end flange wall 13 that protrudes laterally from the upper end portion thereof. Further, in the vicinity of the corner portion 10C of the four corners of the container 10, the corner flange wall 14 protrudes laterally from the lower position of the upper end flange wall 13, and the upper end flange wall 13 is excluding the vicinity of the corner portion 10C. The reinforcing flange wall 15 protrudes laterally from the lower position. Further, the corner flange wall 14 is positioned at a substantially center in the vertical direction of the container 10, and the reinforcing flange wall 15 is positioned in the middle between the upper end flange wall 13 and the corner flange wall 14 in the vertical direction of the container 10. Further, the corner flange wall 14 and the upper end flange wall 13 are connected by a plurality of vertical ribs 14L, and the reinforcing flange wall 15 and the upper end flange wall 13 are connected by a plurality of vertical ribs 15L. Then, both end portions of the reinforcing flange wall 15 are connected to the vertical ribs 14L at the end portions of the corner flange wall 14, respectively. In addition, at the center of the four sides of the container 10, a part of the reinforcing flange wall 15 protrudes upward, and as shown in FIG.

  As shown in FIGS. 1 and 2, the outer surface of the container 10 has a plurality of stacked support protrusions (reference numerals 20, 22, and 2 in FIGS. 1 and 2) between an intermediate position in the vertical direction and a position near the lower end. 24, 26) are projectingly formed. The overall shape of the container 10 including these stacked support protrusions is line-symmetric with respect to the center line CL1 (see FIG. 4) of the container 10 in the first horizontal direction H1, while the second horizontal direction H2. The container 10 has a non-axisymmetric shape with respect to the center line (not shown) of the container 10. The details are as follows.

  As shown in FIG. 4, the plurality of stacked support protrusions are provided in pairs on the first and second side walls 11 and 12, and both corner portions of the first and second side walls 11 and 12 are provided. Each of the corner flange walls 14 is located below the corner flange wall 14 and arranged in the vicinity of 10C. Further, these stacking support protrusions are relatively close to the center-side stacking support protrusions 22 and 26 disposed at positions relatively far from the corner portion 10C and the corner portion 10C, even in the vicinity of the corner portion 10C. The first side walls 11 and 11 can be divided into one end side in the second horizontal direction H2 of each pair of the first side walls 11 and 11. A center-side stacking support protrusion 22 is provided on the side of the second side wall 12 (that is, one of the second side walls 12 side), while an end-side stacking support protrusion 24 is provided on the other end side (the other second side wall 12 side). ing. Further, in the pair of second side walls 12, 12, center-side stacking support protrusions 26, 26 are provided at both end portions of one second side wall 12, while end portions of the other second side wall 12 are connected to both end portions. Protrusion support protrusions 20 and 20 are provided. Further, the laterally extending support protrusions 22 and 26 are substantially the same in width, and the laterally extending support protrusions 20 and 24 are also substantially the same in width. Further, the lateral width of the end-side product support protrusions 20 and 24 is about two to three times the lateral width of the center-side product support protrusions 22 and 26. In the following description, when the center-side stacking support projections 22 and 26 and the end-side stacking support projections 20 and 24 are generically referred to, only “stacking support projections” and “stacking support projections” are used. "Group".

  Next, a structure common to all the loading support protrusions will be described. As illustrated in FIG. 6, the stacking support protrusions 20 are typically a pair of protrusions that protrude from the side surface of the container 10 and extend in the vertical direction. The vertical ribs 20A and 20A are connected to each other at the lower end plate 20B. The upper ends of the pair of vertical ribs 20 </ b> A and 20 </ b> A are connected to the lower surface of the corner flange wall 14, and the lower ends of the vertical ribs 20 </ b> A and 20 </ b> A are disposed above the lower surface of the bottom wall 16. The lower end plate 20B has a horizontal plate shape and projects from the outer surface of the container 10 to the same position as the pair of vertical ribs 20A and 20A.

  Next, a structure peculiar to the end-side stacking support protrusion 20 and the center-side stacking support protrusion 26 arranged on the second side wall 12 will be described. As shown in FIG. 6, the end-side stacking support protrusion 20 and the center-side stacking support protrusion 26 (only the end-side stacking support protrusion 20 is shown in FIG. 6). 2), the lower end plate 20B is disposed so as to be shifted upward from the lower end surfaces of the longitudinal ribs 20A and 20A, and a pair of lower end plates 20B is provided at the lower portion of the lower end plate 20B. The front edge portions of the vertical ribs 20A and 20A are connected by an auxiliary communication wall 20C that is bent at a right angle downward from the front edge of the lower end plate 20B. The lower end surface of the auxiliary communication wall 20C is flush with the vertical ribs 20A and 20A. Further, the portion constituted by the lower end surface of the auxiliary communication wall 20C and the lower end surfaces of the vertical ribs 20A, 20A is the second portion in the lower container 10 when the container 10 is stacked on the other container 10. The lower end contact surface that contacts the upper surface of the side wall 12 ("lower end contact surface 20T" at the end-side stacking support projection 20, and "lower end contact surface 26T" at the center-side stacking support projection 26). See).

  Further, as shown in FIGS. 1 and 2, the vertical ribs disposed on the center side in the lateral direction of the second side wall 12 are provided below the end-side product stacking support projection 20 and the center-side product support support projection 26. A part of 20A is extended to the lower end of the container 10 and a lateral displacement regulating rib ("lateral displacement regulating rib 33 for the end-side stacking support projection 20" and "lateral displacement regulation rib 26 for the center-side stacking support projection 26" Ribs 34 "(see Fig. 4) are formed. Here, since the second side wall 12 is inclined obliquely outwardly upward as described above, it is vertically downward from the line of intersection of the lower surface of the corner flange wall 14 and the outer side surface of the second side wall 12 of the container 10. When an imaginary vertical surface is suspended, a space (hereinafter referred to as “side gradient space”) is formed between the imaginary vertical surface and the outer surface of the second side wall 12. Then, the upper end portions of the lateral displacement regulating ribs 33 and 34 are sized so as to slightly protrude outside the side slope space, and the entire portion excluding the upper end portions of the lateral displacement regulating ribs 33 and 34 is inside the side slope space. The size fits in.

  Next, a structure peculiar to the center-side product stacking support protrusion 22 and the end-side product support support projection 24 arranged on the first side wall 11 will be described. As shown in FIG. 7, only the center-side stacking support projection 22 and the end-side stacking support projection 24 disposed on the first side wall 11 (only the end-side stacking support projection 24 is shown in FIG. 7. 6), the lower surface of the lower end plate 20B and the lower surfaces of the vertical ribs 20A and 20A are flush with each other. Then, from the tip of the lower end plate 20B, the downward contact piece ("downward contact piece 23 for the center-side stacked support protrusion 22", and "downward contact piece for the end-side stacked support protrusion 24". 25 ") protrudes vertically downward, and the lower end surface of the downward contact piece contacts the upper surface of the first side wall 11 of the lower container 10 when the container 10 is stacked on the other container 10. The lower end abutting surface (“lower end abutting surface 23T” for the center-side stacked support protrusion 22 and “lower end abutting surface 25T” for the end-side stacked support protrusion 24, see FIG. 5). The lower end contact surfaces 23T and 25T are flush with the lower end contact surfaces 20T and 26T of the end-side product support protrusions 20 and the center-side product support protrusions 26 of the second side wall 12 described above. Yes.

  As shown in FIG. 7, a pair of communication reinforcements that communicate with the lower surface of the lower end plate 20B at both ends of the downward contact pieces 23 and 25 (see FIG. 6 for the downward contact piece 23). Ribs 27L and 27L are provided. Moreover, the surface which faced the outer surface side of the 1st side wall 11 among these connection reinforcement ribs 27L and 27L goes to the downward direction from the lower end part of the vertical surface 27U extended from the lower end plate 20B, and the lower end part of the vertical surface 27U. And the inclined surface 27S that is inclined so as to approach the downward contact piece 23, 25 side.

  As shown in FIG. 6, lateral displacement regulating ribs (center-side stacking support) extending from the lower end plate 20 </ b> B to the lower end of the container 10 are provided below the center-side stacking support projection 22 and the end-side stacking support projection 24. The protrusion 22 is provided with a “lateral deviation restriction rib 31”, and the end-side stacking support protrusion 24 is provided with a “lateral deviation restriction rib 32” (see FIG. 7). These lateral displacement restricting ribs 31 and 32 also have a size such that the upper end portion slightly protrudes outside the above-described side gradient space, and excludes the upper end portion, similarly to the lateral displacement restricting ribs 33 and 34 of the second side wall 12. The whole is sized to fit inside the side gradient space.

  Now, as shown in FIG. 5, the lateral displacement restricting protrusions 30 (“first” of the present invention are provided between the center-side stacked support protrusions 22 and the corners 10 </ b> C of the outer side surfaces of the first side walls 11. Corresponding to the “displacement restricting protrusions”. As shown in FIG. 6, the lateral displacement restricting protrusion 30 is disposed adjacent to a boundary line R <b> 1 between the outer surface of the first side wall 11 and the outer curved surface of the corner portion 10 </ b> C, and the lower surface of the corner flange wall 14. To a position slightly above the lower end of the container 10. Further, in the lateral displacement restricting protrusion 30, the lower portion from the substantially same position as the upper end portion of the lateral displacement restricting rib 31 in the vertical direction is the displacement restricting portion 30A, and the leading end surface of the displacement restricting portion 30A is It is substantially the same as the front end surface of the lateral displacement regulating rib 31. Further, as shown in FIG. 14, the distal end surface of the lateral displacement restricting protrusion 30 that is above the displacement restricting portion 30 </ b> A is located outside the distal end surface of the displacement restricting portion 30 </ b> A. In addition, the amount of protrusion of the upper side portion of the lateral displacement restricting protrusion 30 above the displacement restricting portion 30 </ b> A gradually decreases from the outer surface of the first side wall 11 due to the inclination of the outer surface of the first side wall 11. It has a shape.

  This completes the description of the structure of the outer surface of the container 10. Next, the structure of the inner surface and the upper surface of the container 10 will be described. As shown in FIGS. 1 and 2, a plurality of protrusion receiving grooves (reference numerals 40, 42, 44, and 46 in FIGS. 1 and 2) are recessed in the inner surface of the container 10. The plurality of protrusion receiving grooves have a rectangular groove shape extending in the vertical direction from the upper surface of the container 10 to the corner flange wall 14, and in the same manner as the stacked support protrusions, all of them are in the vicinity of the corner portion 10 </ b> C. Has been placed. A portion of the first side wall 11 and the second side wall 12 where the protrusion receiving groove is formed is a prismatic shape on the outer surface side and extends between the upper end flange wall 13 and the corner flange wall 14. Yes.

  The plurality of projecting portion receiving grooves are arranged in the vicinity of the corner portion 10C in the vicinity of the corner portion 10C in the same manner as the stacked support projecting portion group. It can be divided into end-side protrusion receiving grooves 40 and 44 arranged at positions relatively close to the corner portion 10C. As shown in FIG. 2, one second side wall 12 having a pair of center-side stacking support protrusions 26, 26 on the outer side face is provided by the center-side stacking support protrusions 26, 26. The end-side protrusion receiving grooves 40, 40 are disposed at positions close to the corner portions 10C, 10C. On the contrary, as shown in FIG. The center side protrusion receiving grooves 46 and 46 are disposed on the other second side wall 12 provided at the center of the second side wall 12 at positions farther from the corner parts 10C and 10C than the stacked support protrusions 20 and 20 near both ends. The distance between the end-side protrusion receiving grooves 40, 40 of one second side wall 12 and the lateral width of each end-side protrusion receiving groove 40 are such that the end-side stacking support protrusions 20, It is the same as the space | interval of 20 and the lateral width of the near-end stacked support protrusions 20. Further, the distance between the center-side protrusion receiving grooves 46, 46 of the other second side wall 12 and the lateral width of each center-side protrusion receiving groove 46 are set so that the center-side stacked support protrusions 26, It is the same as the space | interval of 26, and the horizontal width of each center side stacking support protrusion 26. FIG.

  Further, as shown in FIGS. 1 and 2, on both first side walls 11, 11, a center-side protrusion receiving groove 42 is disposed at a position farther from the corner portion 10 </ b> C than the end-side product support protrusion 24, and An end-side protrusion receiving groove 44 is disposed at a position closer to the corner portion 10 </ b> C than the center-side stacking support protrusion 22. The distance between the center-side protrusion receiving groove 42 and the end-side protrusion receiving groove 44 is the distance between the end-side stacking support protrusion 24 and the center-side stacking support protrusion 22 provided on the first side wall 11. The lateral width of the center-side protrusion receiving groove 42 is the same as the lateral width of the center-side stacking support protrusion 22, and the lateral width of the end-side protrusion receiving groove 44 is the same as that of the end-side stacking support protrusion 24. It is the same as the width.

  As a result, when another container 10 is rotated 180 degrees with respect to the container 10 and stacked from above, the stacking support protrusions 20 and 24 near the end of the upper container 10 are projected toward the end of the lower container 10. The nesting state is received in the portion receiving grooves 40, 44 and the center-side stacked upper support protrusions 22, 26 of the upper container 10 are received in the center-side protrusion receiving grooves 42, 46 of the lower container 10. (See FIG. 17). In the nesting state, the corner flange wall 14 of the upper container 10 contacts the upper end flange wall 13 of the lower container 10.

  In the following description, when the end-side protrusion receiving grooves 40 and 44 and the center-side protrusion receiving grooves 42 and 46 are collectively referred to, they are simply referred to as “projection receiving grooves” and “projection receiving groove groups”. And

  As shown in FIG. 1 and FIG. 2, a lateral displacement regulating rib below each stacked support projection is formed at the intersection of the bottom surface of each projection receiving groove and the inner surface of the first side wall 11 and the second side wall 12. Cutout portions 40A, 42A, 44A, and 46A for avoiding interference with the upper ends of 31, 32, 33, and 34 are formed. Further, as described above, the whole of the lateral displacement restricting ribs 31, 32, 33, 34 excluding the upper end is sized to fit inside the side slope space, so that when the nesting is performed, the lower container 10 Fits inside the inner surface.

  As shown in FIG. 1, a rib receiving groove 50 is formed in each first side wall 11 on the corner portion 10 </ b> C side from the center-side protruding portion receiving groove 42. The rib receiving groove 50 has a rectangular groove shape extending upward from the corner flange wall 14 in the same manner as the protrusion receiving groove. Further, the portion of the first side wall 11 where the rib receiving groove 50 is formed has a prismatic shape on the outer surface side, like the protrusion receiving groove, between the upper end flange wall 13 and the corner flange wall 14. It extends to. As described above, when the container 10 is nested, the upper side portion of the lateral displacement restricting protrusion 30 with respect to the displacement restricting portion 30 </ b> A is received in the rib receiving groove 50.

  As shown in FIG. 1, a part of the upper surface of the upper end flange wall 13 is recessed in a stepped shape on the upper surface of one of the second side walls 12 provided with the end-side protrusion receiving grooves 40, 40. The collision part mounting surfaces 41 and 41 are formed. Each center abutment portion mounting surface 41 has a rectangular shape, and is disposed on the opposite side of the corner portion 10C with respect to each end-side projection receiving groove 40, and the center-side stacking support projection 26 (see FIG. 2). The whole is covered from above. Specifically, the upper end flange is formed on the edge on the side away from the end-side protrusion receiving groove 40 in the central abutment placement surface 41 and the edge on the side away from the inner surface of the second side wall 12. A step surface is provided between the upper surface of the wall 13 and the central collision portion placement surface 41. Further, the central bumping portion mounting surface 41 is connected to a state substantially orthogonal to the inner side surface of the end-side protruding portion receiving groove 40 and the inner side surface of the second side wall 12. Further, the stepped surface between the edge of the central abutting portion placement surface 41 on the side away from the inner surface of the second side wall 12 and the upper surface of the upper end flange wall 13 is in the end-side protruding portion receiving groove 40. The second side wall 12 is flush with the inner surface on the side away from the inner surface.

  As shown in FIG. 2, a part of the upper surface of the upper end flange wall 13 is depressed in a stepped manner on the upper surface of the other second side wall 12 having the center-side protrusion receiving grooves 46, 46. End bumping portion mounting surfaces 47 and 47 are formed. Each end bumping portion mounting surface 47 has a rectangular shape extending from the upper end opening edge of each center side protruding portion receiving groove 46 toward the corner portion 10C, and is flush with the central bumping portion mounting surface 41. Yes. Each end bumping portion mounting surface 47 covers the entire end-side stacked support projection 20 (see FIG. 1) from above. In addition, each end bumping part mounting surface 47 has a step surface between the upper surface of the upper end flange wall 13 as well as the above-described central bumping part mounting surface 41, and the central bump receiving groove 46. To the inner side surface of the second side wall 12 and the inner side surface of the second side wall 12.

  As shown in FIGS. 1 and 2, the upper surface of each first side wall 11 is the whole except for the end-side protrusion receiving groove 44 and the center-side protrusion receiving groove 42 between the corner portions 10C, 10C at both ends. A belt-like protrusion mounting surface 43 is formed over the entire area. Specifically, the belt-like protrusion mounting surface 43 is formed so that a part of the upper surface of the upper end flange wall 13 is substantially flush with the central bumping part mounting surface 41 and the end bumping part mounting surface 47. I will be depressed. The belt-like protrusion mounting surface 43 forms a belt-like shape, and the inner surface of the upper edge opening edge of the edge-side protrusion receiving groove 44 from the edge on the rib receiving groove 50 side to the corner 10C of the rib receiving groove 50. And is divided by a center-side protrusion receiving groove 42 at a position near the rib receiving groove 50. In addition, a stepped surface is provided between the upper surface of the upper flange wall 13 and the band-shaped projecting portion mounting surface 43 at the edge of the strip-shaped projecting surface 43 on the rib receiving groove 50 side. Is flush with the inner surface of the rib receiving groove 50.

  As shown in FIG. 8, the edge of the belt-like protrusion placement surface 43 on the side away from the inner surface of the first side wall 11 is between the upper surface of the upper flange wall 13 and the belt-like protrusion placement surface 43. Is provided with a guide step surface 54. Both ends of the guide step surface 54 are vertical guide surfaces 54D and 54D, and a pair of laterally inclined guide surfaces 54A and 54A and a vertically inclined guide surface 54B are formed between the vertical guide surfaces 54D and 54D. ing. The vertical guide surfaces 54 </ b> D and 54 </ b> D stand substantially vertically from the belt-like protrusion mounting surface 43, and are flush with the inner surfaces of the end-side protrusion receiving groove 44 and the center-side protrusion receiving groove 42. The end portions of the vertical guide surfaces 54D and 54D on the side of the horizontally inclined guide surfaces 54A and 54A are more than the end portions of the corner flange walls 14 and 14 (see FIG. 1) at both ends of the first side wall 11 closer to each other. It is arranged at a position shifted to the side approaching each other. The laterally inclined guide surfaces 54A and 54A are formed by bending outwardly the imaginary extension surfaces of the vertical guide surfaces 54D and 54D around the vertical folding lines L3 and L3 at the ends of the vertical guide surfaces 54D and 54D. None (see FIG. 9), the longitudinally inclined guide surface 54B has a shape in which an imaginary extension surface of the vertical guide surfaces 54D and 54D is inclined outward with the lower end portion as a center. Thereby, intersecting lines L4 and L4 are formed extending obliquely upward from the lower ends of the vertical folding lines L3 and L3 between the laterally inclined guide surfaces 54A and 54A and both ends of the vertically inclined guide surface 54B.

  A guide protrusion 53 projects from an edge of the belt-shaped protrusion mounting surface 43 on the inner surface side of the first side wall 11. Both end portions of the guide protrusion 53 are arranged so as to deviate from the pair of vertical folding lines L3, L3 on the guide step surface 54 toward the corner portions 10C, 10C by a certain amount. And from the both ends of the guide protrusion 53 to the position facing the vertical folding lines L3, L3, there are high guide portions 53A, 53A having a uniform height. Further, an intermediate portion in the longitudinal direction of the guide protrusion 53 is a low guide portion 53C extending at a uniform height lower than the high guide portions 53A and 53A, and the high guide portions 53A and 53A and the low guide portion 53C. A pair of inclined guide portions 53B and 53B gradually lower from the high guide portions 53A and 53A toward the low guide portion 53C. Further, as shown in FIG. 10, the height from the belt-like protrusion placement surface 43 to the upper surface of the upper end flange wall 13 is the height from the belt-like protrusion placement surface 43 to the upper end surface of the high guide portions 53A, 53A. It is almost the same.

  The region on the rib receiving groove 50 side of the center-side protruding portion receiving groove 42 in the band-shaped protruding portion mounting surface 43 shown in FIG. 8 is the end bumping portion mounting surface corresponding to the end bumping portion mounting surface 47 described above. The end bumping portion mounting portion 43A covers the entire near-end stacking support protrusion 24 (see FIG. 1) from above. Further, a region of the belt-like protrusion placement surface 43 that is closer to the end than the end of the guide protrusion 53 has a central impaction placement surface corresponding to the central impaction placement surface 41 described above. This central abutting portion mounting portion 43B covers the entire centering support protrusion 22 (see FIG. 1) from above. And when the other container 10 is piled up from the top in the same direction with respect to the container 10, the lower end contact surfaces 20T and 25T (refer FIG. 5) of the near end product stacking support protrusions 20 and 24 of the upper container 10 are obtained. The lower end abutment surface 23T of the upper side container 10 and the upper abutment portion mounting surface 47A of the upper container 10 and the lower end abutment surface 23T of the upper container 10 , 26T (see FIG. 5) is in a stacking state in contact with the central abutment portion placement surface 41 and the central abutment portion placement portion 43B of the lower container 10 (see FIG. 16). In the stacking state, the lateral displacement regulating ribs 31, 32, 33, 34 (see FIG. 4) of the upper container 10 are brought into contact with the upper inner surface of the lower container 10, and the upper and lower The lateral displacement of the containers 10 and 10 is suppressed.

  As shown in FIG. 8, the locking protrusion 51 protrudes from the edge on the inner surface side of the first side wall 11 in the end bumping portion mounting portion 43 </ b> A. The locking protrusion 51 is disposed at the longitudinal intermediate portion of the end protrusion mounting part 43A. Similarly, the locking protrusion 52 protrudes from the edge on the inner side surface side of the first side wall 11 in the center bump portion placement portion 43B. Similarly to the locking ridge 51, the locking ridge 52 is also disposed in the middle portion in the longitudinal direction of the center bump portion mounting portion 43B. When the container 10 is stacked, the locking ridge 51 faces the downward contact piece 25 on the end side stacking support projection 24, and the locking ridge 52 is below the center stacking support projection 22. It faces the direction abutting piece 23.

  This completes the description of the configuration of the container 10 of the present embodiment. Next, the effect of this container 10 is demonstrated. As described above, the container 10 according to the present embodiment is in a stacking state when the containers 10 are stacked in the same direction, and is in a nesting state when the upper and lower containers 10 are stacked with the direction different by 180 degrees. When stacking in the stacking state and nesting state, the upper container 10 may be lowered from the lower container 10 from above, and the upper container 10 may be stacked with respect to the lower container 10. Work efficiency is improved by performing a slide stacking operation.

  First, a slide stacking operation (that is, slide stacking) when stacking will be described. In order to perform slide stacking, as shown in FIG. 11, near the center of the upper surface of the pair of first side walls 11, 11 in the lower container 10, the near-center stacking support protrusions 22, 22 of the upper container 10 are provided. The upper container 10 may be brought into an inclined posture by abutting, and the upper container 10 may be slid in the second horizontal direction H2 on the upper surface of the lower container 10.

  Specifically, the center-side stacked support protrusions 22 and 22 of the upper container 10 are brought into contact with the upper surfaces of the pair of first side walls 11 and 11 in the lower container 10. Then, as shown in FIG. 14, the lower end contact surface 23 </ b> T of the downward contact piece 23 of each center-side stacked support protrusion 22 contacts the belt-shaped protrusion placement surface 43 on the upper surface of the first side wall 11, The downward contact piece 23 is disposed between the guide step surface 54 and the guide protrusion 53. Then, by tilting the container 10, as shown in FIG. 12, the corner portion 10C side of the upper container 10 is protruded into the lower container 10 from the center-side stacking support protrusion 22, and the upper container 10 As shown in FIG. 13, a pair of lateral displacement restricting protrusions 30, 30 provided between each center-side stacking support protrusion 22 and the corner portion 10 </ b> C of the container 10 is a first side wall of the upper container 10. 11 and the first side wall 11 of the lower container 10.

  At this time, as shown in FIG. 15, even when the upper container 10 is placed laterally with respect to the lower container 10, for example, one lower contact piece 23 of the upper container 10 The provided inclined surface 27S is in sliding contact with the guide protrusion 53 provided at the upper end of the lower first side wall 11, and the upper container 10 is guided so as to approach the normal position (position shown in FIG. 14). Is done. Also, suppose that the center-side stacking support projection 22 of the upper container 10 is inclined so that the other center-side stacking support projection 22 is positioned below, and the center-side stacking support projection of the lower side is located. Even if 22 is disengaged outward from the guide protrusion 53 of the lower container 10, the center-up stacking support protrusion of the upper container 10 is formed on the longitudinally inclined guide surface 54 </ b> B of the guide step surface 54 in the lower container 10. The downward contact piece 23 of the portion 22 is guided so as to come into sliding contact with the normal position.

  When the upper container 10 is slid with respect to the lower container 10 in the second horizontal direction H2 (see FIG. 11), the upper container 10 is changed to the lower container 10 due to variation in the sliding operation. On the other hand, an operating force can also be received in the first horizontal direction H1 (direction perpendicular to the sliding direction). However, as shown in FIG. 14, the pair of lateral displacement restricting protrusions 30, 30 provided in the upper container 10 includes the first side wall 11 of the upper container 10 and the first side wall 11 of the lower container 10. The lateral displacement of the upper and lower containers 10, 10 is suppressed, and the center-side stacked support protrusions 22, 22 of the upper container 10 are arranged at the first side walls 11, 11 of the lower container 10. Occurrence of a situation that deviates from the top is prevented. Then, the displacement regulating portions 30A and 30A of the lateral displacement regulating protrusions 30 and 30 in the upper container 10 are brought into sliding contact with the inner side surface of the lower container 10 to enable a smooth and stable slide stacking operation. When the upper container 10 is slid, the front end portion of the upper container 10 in the sliding direction comes into contact with the inner surface of the second side wall 12 of the lower container 10 and stops there. If 10 is returned to a horizontal posture, it will be in a stacking state.

  Further, when nesting containers 10, the pair of first containers 10 in the lower container 10 is turned in the same manner as in the case of stacking by turning the upper container 10 by 180 degrees with respect to the lower container 10. What is necessary is just to slide the upper container 10 into the second horizontal direction H <b> 2 by abutting the center-side stacked support protrusions 22, 22 of the upper container 10 near the center of the upper surface of the side walls 11, 11. Then, as in the case of the above-described slide stacking, the lateral displacement restricting projections 30 and 30 in the upper container 10 suppress the lateral displacement of the upper and lower containers 10 and 10, and a smooth and stable slide stacking operation becomes possible. . Then, when the upper container 10 is slid, the center-side stacked support protrusions 22 and 22 of the upper container 10 become the center-side protrusion receiving grooves 42 and 42 of the lower container 10 (see FIG. 1). And the upper stacking support protrusions 20 and 20 of the upper container 10 enter the end protrusion receiving grooves 40 and 40 (see FIG. 1) of the lower container 10. When the container 10 is returned to the horizontal posture, all the stacking support protrusions of the upper container 10 are received in the protrusion receiving grooves of the lower container 10 to be in a nesting state. As described above, according to the container 10 of the present embodiment, a smooth and stable slide stacking operation can be performed both when stacking and when nesting is performed.

[Second Embodiment]
The container 10V of this embodiment is shown in FIGS. As shown in FIG. 20, in the container 10 </ b> V of the present embodiment, a pair of side walls disposed on the long side portion of the outer edge of the bottom wall 16 is opposite to the container 10 of the first embodiment. One pair of the first side walls 61, 61 is formed, and the pair of side walls disposed on the short side portion is a pair of second side walls 62, 62 according to the present invention. Further, a center-side stacking support protrusion 26 is provided on one second side wall 62 side of both the first side walls 61, 61, while an end-side stacking support protrusion 20 is provided on the other second side wall 62 side. Is provided. Further, in the pair of second side walls 62, 62, the center-side stacking support protrusions 22, 22 are provided at both end portions of one second side wall 62, while the end portions of the other second side wall 62 are connected to both end portions. Protrusion support protrusions 24, 24 are provided.

  Further, the protrusion receiving grooves on the inner side surface of the container 10V are also arranged differently from the first embodiment corresponding to the above-described stacked support protrusions. That is, as shown in FIG. 18, one second side wall 62 having a pair of center-side stacking support protrusions 22, 22 on the outer surface is more than the center-side stacking support protrusions 22, 22. The end-side protrusion receiving grooves 44, 44 are arranged at positions close to the corner portions 10C, 10C, and as shown in FIG. 19, the other end provided with a pair of end-side product support protrusions 24, 24 on the outer surface. On the second side wall 62, center-side protrusion receiving grooves 42, 42 are arranged at positions farther from the corner portions 10 </ b> C, 10 </ b> C than the both-end stacked support protrusions 24, 24. Further, a center-side protrusion receiving groove 46 is disposed at a position farther from the corner portion 10 </ b> C than the end-side stacking support protrusion 20 on both first side walls 61, 61, and from the center-side stacking support protrusion 26. An end-side protrusion receiving groove 40 is disposed at a position close to the corner portion 10C. Further, as shown in FIGS. 18 and 19, on the upper surface of each second side wall 62, the above-described band-shaped protrusion placement surface 43, the guide step surface 54 and the guide protrusion 53 are formed.

  As shown in FIG. 18, in the present embodiment, of the second side walls 62 provided with the center-side stacking support projections 22, 22, the center-side stacking support projections 22 and the corner portions 10 </ b> C are provided. A lateral displacement restricting protrusion 30V (corresponding to the “second displacement restricting protrusion” of the present invention) is provided between each of them. The pair of lateral displacement restricting protrusions 30V and 30V of the one second side wall 62 are, as shown in FIG. 20 and FIG. Is disposed opposite to the pair of lateral displacement regulating ribs 32, 32 provided below.

  In the present embodiment, the lateral displacement regulating rib 32 corresponds to a “third displacement regulating protrusion” according to the present invention. Further, the pair of lateral deviation regulating protrusions 30V, 30V in the present embodiment has the same shape as the lateral deviation regulating projection 30 in the first embodiment. Since other configurations are the same as those in the first embodiment, a duplicate description is omitted.

  According to the configuration of the present embodiment, when stacking or nesting the container 10V, the end-side product support protrusion 24 of the upper container 10V is abutted against the upper surface of the second side wall 62 of the lower container 10V. The slide stacking operation can be performed with the container 10V tilted. During the slide stacking operation, the lateral displacement regulating protrusion 30V and the lateral displacement regulating rib 32 are formed in the gap between the second side wall 62 of the upper container 10V and the second side wall 62 of the lower container 10V. The horizontal displacement of the upper and lower containers 10V, 10V is suppressed, and a smooth and stable slide stacking operation becomes possible.

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

(1) As shown in FIG. 22, the lateral displacement restricting protrusion 30 is provided on the corner 10C, 10C side from the center-side stacked support protrusion 26, 26 on the second side wall 12 of the container 10 of the first embodiment. Similar lateral displacement restricting protrusions 30W and 30W are provided as “second displacement restricting protrusions” according to the present invention, and the lateral displacement restricting protrusions 30W and 30W and the end-side stacking support protrusions in the second horizontal direction H2. The lateral displacement regulating ribs 33W and 33W similar to the lateral displacement regulating rib 33 may be provided below the 20, 20 as the “third displacement regulating protrusion” according to the present invention. With such a configuration, the combined effects of the containers 10 and 10V of the first and second embodiments can be obtained.

(2) In the first and second embodiments, the pair of first side walls 11, 11 (61, 61) and the pair of second side walls 12, 12 (62, 62) are paired on each side wall. However, the present invention may be applied by providing the stacked support protrusions only on the pair of first side walls or only on the pair of second side walls.

10, 10V, 10W Container 11, 61 1st side wall 12, 62 2nd side wall 20, 24 End side stacking support projection 22, 26 Center side stacking support projection 30 Lateral displacement regulation projection (first displacement regulation projection) Part)
30V, 30W Lateral deviation regulating projection (second deviation regulating projection)
33W Lateral deviation regulating rib (third deviation regulating projection)
40, 44 End-side protrusion receiving groove 42, 46 Center-side protrusion receiving groove H1 First horizontal direction H2 Second horizontal direction

Claims (4)

A box-shaped structure with an open top surface, and a plurality of stacked support protrusions that are formed to project downward from an intermediate position in the vertical direction on the outer surface, and are formed to be depressed from an intermediate position in the vertical direction on the inner surface. A container having a plurality of protrusion receiving grooves,
One of the stacking support protrusions is provided in the vicinity of the corner portion of the container in the pair of first side walls facing each other in the first horizontal direction among the first horizontal direction and the second horizontal direction orthogonal to each other, both of them. One of the second horizontal direction of the first side wall of the first side wall of the first side wall of the first side wall of the second side of the stacking support projection is a center-side stacking support projection that is relatively far from the corner of the container than the other side of the stacking support projection. The stacking support protrusion on the other end side is an end-side stacking support protrusion that is relatively close to the corner portion of the container,
The nesting in which the stacking support protrusion of the upper container is received in the protrusion receiving groove of the lower container depending on whether another container is rotated 180 degrees and stacked on top of the container or not. In a container that can be changed to a state and a stacking state in which the stacking support protrusion of the upper container is in contact with the upper surface of the first side wall of the lower container,
An upper container is inclined between the center-side stacked support protrusions and the corners of the outer surfaces of the pair of first side walls, and the center-side stack support protrusions are arranged in the lower container. A first displacement restricting protrusion that is disposed between the first side wall of the upper container and the first side wall of the lower container when protruding against the upper surface of the first side wall. A container characterized by. A box-shaped structure with an open top surface, and a plurality of stacked support protrusions that are formed to project downward from an intermediate position in the vertical direction on the outer surface, and are formed to be depressed from an intermediate position in the vertical direction on the inner surface. A container having a plurality of protrusion receiving grooves,
One of the stacking support protrusions is provided near the corner of the container on each side wall,
In the pair of first side walls opposed in the first horizontal direction among the first horizontal direction and the second horizontal direction orthogonal to each other, the stacked support protrusions on one end side in the second horizontal direction on both the first side walls The other end side of the container-side support protrusion is relatively far from the corner of the container, while the other end side of the container-side support protrusion is the corner of the container. A relatively close end-side support protrusion,
In the pair of second side walls opposed in the second horizontal direction, a pair of stacking support protrusions on one of the second side walls is used together with a pair of stacking support protrusions on the other second side wall. Further, a pair of stacking support projections on the other second side wall are relatively close to the corner portion of the container. As the end-side stacking support protrusion,
The nesting in which the stacking support protrusion of the upper container is received in the protrusion receiving groove of the lower container depending on whether another container is rotated 180 degrees and stacked on top of the container or not. In a container that can be changed to a state and a stacking state in which the stacked support protrusions of the upper container are in contact with the upper surfaces of the first and second side walls of the lower container,
An upper container is tilted between the outer side surfaces of the pair of first side walls between the center-side stacking support projections and the corner portions, and the center-side stacking support projections of the first side walls are inclined. A first displacement regulating protrusion disposed between the first side wall of the upper container and the first side wall of the lower container when abutting against the upper surface of the first side wall of the lower container; Protruding and formed
Of the outer side surface of the one second side wall, between the center-side stacked support protrusion and the corner portion, the upper container is inclined to tilt the upper container, and the end-side support support protrusion of the second side wall, A second displacement restricting protrusion disposed between the second side wall of the upper container and the second side wall of the lower container when abutting against the upper surface of the second side wall of the lower container; A container characterized by protruding formation. A box-shaped structure with an open top surface, and a plurality of stacked support protrusions that are formed to project downward from an intermediate position in the vertical direction on the outer surface, and are formed to be depressed from an intermediate position in the vertical direction on the inner surface. A container having a plurality of protrusion receiving grooves,
One of the stacking support protrusions is provided in the vicinity of a corner portion of the container in the pair of second side walls opposed in the second horizontal direction among the first horizontal direction and the second horizontal direction orthogonal to each other, A pair of stacking support projections on the second side wall, and a pair of stacking support projections on the other side wall that are relatively far from the corner of the container than the pair of stacking support projections on the other side wall. On the other hand, the pair of stacking support protrusions on the other second side wall are both close stacking support protrusions that are relatively close to the corners of the container,
The nesting in which the stacking support protrusion of the upper container is received in the protrusion receiving groove of the lower container depending on whether another container is rotated 180 degrees and stacked on top of the container or not. In a container that can be changed to a state and a stacking state in which the stacked support protrusion of the upper container is in contact with the upper surface of the second side wall of the lower container,
Of the outer side surface of the one second side wall, between the center-side stacked support protrusion and the corner portion, the upper container is inclined to tilt the upper container, and the end-side support support protrusion of the second side wall, A second displacement restricting protrusion disposed between the second side wall of the upper container and the second side wall of the lower container when abutting against the upper surface of the second side wall of the lower container; A container characterized by protruding formation. The lower end portion of the stacking support protrusion is disposed above the lower end of the outer side surface of the container,
The upper container is tilted at a position below the end-side stacking support projection on the outer side surface of the other second side wall and facing the second displacement regulating projection in the second horizontal direction. The second side wall of the upper container and the second side wall of the lower container when the end-side stacking support protrusions of the two side walls are abutted against the upper surface of the second side wall of the lower container; The container according to claim 2 or 3, wherein a third displacement restricting protrusion disposed between the protrusions is formed to protrude.