Stacking parts

Abstract

To provide a part for stacking which can be stably placed on corners of a container.SOLUTION: According to one aspect of the present invention, an outer wall (2) corresponding to an outer edge of a part (1) for stacking has a contact region (22) which is located on the inner side of a container (50) with respect to an outer side face (55BC) of an opening-side corner (60A) and comes into contact with end faces (54B and 54C) of the opening-side corner (60A) of the container (50), at a position close to the outer side face (55BC) of the opening-side corner (60A) of the container (50).SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to stacking parts disposed between containers when stacking containers on top of each other.

Background Art

[0002] When stacking containers made of synthetic resin, the upper container may easily slide with respect to the lower container, and the upper container may inconveniently fall. Therefore, a mode of attaching an anti-slip device between the lower container and the upper container is known. For example, Patent Document 1 describes an anti-slip device that fits onto the upper edge of the corner of the lower container. The anti-slip device of Patent Document 1 includes a bent plate bent at a right angle and a support plate protruding orthogonally to the bent plate in the middle of the bent plate. The anti-slip device is fitted and attached to the corner of the box body.

[0003] By the way, containers (boxes) are realized in various shapes for various reasons. For example, the transport container described in Patent Document 2 has a shape with the four corners cut off.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] When placing the anti-slip device described in Patent Document 1 on a container having a corner of a cut-off shape such as the transport container described in Patent Document 2, there is a concern that the anti-slip device may fall outward from the corner of the container when stacking.

[0006] Therefore, one aspect of the present invention aims to realize stackable parts that can be stably placed on the corners of a container. [Means for solving the problem]

[0007] To solve the above problems, a stacking part according to one aspect of the present invention is a stacking part used by being placed on the corner of a container, wherein the stacking part comprises a contact portion that abuts against the container when placed on the corner of the container, a first restricting portion that restricts the inward movement of the stacking part, and a second restricting portion that restricts the outward movement of the stacking part, wherein the corner of the container is the end of the part that is positioned opposite the contact portion when the stacking part is placed on the corner of the container The stacking part is provided with a surface and a side surface adjacent to the end surface and facing the first and second restricting portions, respectively. When the stacking part placed on the corner of the container is viewed from above, the outer edge portion of the stacking part facing outward from the container overlaps with the tip portion of the corner at a position close to the tip portion of the corner, or is located inward from the tip portion of the container, and the outer edge portion has a contact area that abuts the end surface of the container at a position close to the tip portion of the corner.

[0008] To solve the above problems, another aspect of the present invention provides a stacking part that is attached to the opposing corners of two containers when stacking two containers, wherein each corner is provided with an end face located opposite the containers, and a side surface adjacent to the end face and located on the outer and inner sides of the containers, respectively, and the stacking part has a first contact portion that abuts the end face of the lower container of the two containers, a lower lateral restricting portion that faces the side surface of the lower container, and the upper container of the two containers The stacking part includes a second contact portion that abuts the end face of the container and an upper lateral restricting portion that faces the side surface of the upper container. When the stacking part attached to the corner of the lower container is viewed from above, the outer edge portion of the stacking part facing outward from the lower container overlaps with the tip portion of the corner of the lower container at a position close to the tip portion, or is located inward from the tip portion of the container. The outer edge portion has a contact area that abuts the end face of the lower container at a position close to the tip portion of the corner of the lower container. [Effects of the Invention]

[0009] According to one aspect of the present invention, stacking parts that can be stably placed on the corners of a container can be realized. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view showing stacking parts according to one embodiment of the present invention placed on each of the four corners on the opening side of a container. [Figure 2] This is a perspective view showing two containers stacked using stacking parts according to one embodiment of the present invention. [Figure 3] Figure 1 is an enlarged perspective view showing a magnified view of the mounting location for the stacking parts. [Figure 4] Figure (a) is a perspective view of the stacking part 1 as a single unit, looking at the side that attaches to the lower container, and Figure (b) is a perspective view of the stacking part 1 as a single unit, looking at it from the upper container 50 side. [Figure 5]Figure 1 is a top view of the stacked parts placed on the container, showing the stacked parts and the end faces of the corners of the container seen through the stacked parts. [Figure 6] Figure 1 shows a single stacked component, viewed from below. [Figure 7] Figure 1 is a top view showing the corners of the container. [Figure 8] Figure 5 is a cross-sectional view taken along the cutting line AA', showing the cross-section of the stacked parts and the corner of the container. [Figure 9] Figure 5 is a cross-sectional view taken along the cutting line BB', showing the cross-section of the stacked parts and the corner of the container. [Figure 10] This is a cross-sectional view of the stacked parts shown in Figure 1 with another container placed on top. [Figure 11] Figure 10 is a cross-sectional view taken along the cutting line CC', showing the cross-section of the stacked parts and the corner of the container. [Figure 12] This is a cross-sectional view of the stacked parts shown in Figure 1 with another container placed on top. [Figure 13] Figure 1 is a perspective view showing another container placed on top of the stacking parts shown, with its bottom facing upwards. [Figure 14] Figure 13 is a cross-sectional view taken along the cutting line EE', showing the cross-sections of the stacked parts, the upper container, and the lower container. [Figure 15] Figure 1 is a cross-sectional view showing a three-compartment stacking configuration in which containers are stacked with their openings facing each other using the stacking parts shown in Figure 1, and another container is placed in a tipped position in the space formed between the containers. [Figure 16] Figure 1 is a perspective view illustrating an example of stacking using the stacking parts shown. [Figure 17] Figure 1 is a perspective view showing the stacked parts placed on a container with specially shaped notches at its corners. [Figure 18] Figure 17 is a top view of the corner of the container shown. [Figure 19] Figure 17 is a top view of the container corners and stacking parts, seen from above.

Embodiment for Carrying out the Invention

[0011]

Embodiment 1

[0012] <Container> The container 50 on which the stacked part 1 is placed is a box-shaped container as shown in FIG. 1. Specifically, the container 50 has a substantially square bottom 51 and side wall portions 52A to 52D extending upward from the edges of the four sides of the bottom 51, and an accommodation space is formed by the bottom 51 and the side wall portions 52A to 52D. The loading and unloading of the contents into and out of the accommodation space can be performed through an opening 53 on the opposite side of the bottom 51.

[0013] FIG. 1 also shows a three-dimensional coordinate system of the XYZ system. The XY plane defines a horizontal plane, and the Z axis defines a vertical direction (the negative Z-axis direction is the gravity direction). Explaining the container 50 shown in FIG. 1 using this three-dimensional coordinate system, the container 50 shown in FIG. 1 has the bottom 51 on the negative Z-axis side and the opening 53 on the positive Z-axis side, and shows a state where the bottom 51 is placed on, for example, a floor surface in a so-called normal posture. Incidentally, the container 50 in this normal posture may be hereinafter referred to as a "normally placed container". In contrast, hereinafter, a container 50 in a posture upside down from the normally placed container, with the bottom 51 facing the positive Z-axis side and the opening 53 facing the negative Z-axis side, will also be described. The container in this upside-down posture may be hereinafter referred to as an "upside-down container".

[0014] The periphery of the opening 53 is formed by the upper ends of the side wall portions 52A to 52D. These upper ends are provided with end faces 54A to 54D that extend in the XY plane. End faces 54B and 54D are elongated in the X-axis direction and have a predetermined width in the Y-axis direction, while end faces 54A and 54C are elongated in the Y-axis direction and have a predetermined width in the X-axis direction. When the container 50 is viewed from above on the side of the opening 53, the periphery of the opening 53 is surrounded by the four end faces 54A to 54D.

[0015] The periphery of the bottom portion 51 is surrounded by the lower ends of the side wall portions 52A to 52D. These lower ends are provided with end faces 57A to 57D (only end faces 57B and 57C are shown in Figure 1) that extend in the XY plane. End faces 57A to 57D will be described later.

[0016] • Corner portion 60A (corner portion) on the opening side The corner portions 60A on the opening side are formed at adjacent positions such that the end faces 54A to 54D on the opening side intersect at roughly right angles.

[0017] Incidentally, a notch shape is provided on the outer edge of the opening-side corner 60A of the container 50. This will be explained using one opening-side corner 60A as an example, based on Figure 7. Figure 7 is an enlarged top view of the opening-side corner 60A enclosed by the dashed line in Figure 1, viewed from above on the opening 53 side. The opening-side corner 60A shown in Figure 7 is located adjacent to an elongated end face 54B along the X-axis and an elongated end face 54C along the Y-axis, with the two being perpendicular to each other. The outer edge of the opening-side corner 60A shown in Figure 7 includes edges that extend diagonally along the longitudinal direction (X-axis direction) of the end face 54B and the longitudinal direction (Y-axis direction) of the end face 54C, respectively. In short, the opening-side corner 60A is not a sharp corner formed by the intersection of a side along the X-axis and a side along the Y-axis at a right angle. In this way, the outer edge of the corner portion 60A on the opening side has a notched shape, which prevents damage to the corner portion 60A from external impacts. While the shape of the outer edge of the corner portion 60A on the opening side is preferably a non-sharp corner, such as a notched or curved shape, from the viewpoint of preventing damage, it may also be a sharp corner. Furthermore, it may have special shapes as described later.

[0018] ·Bottom side corner 60B The container 50 also has corners formed at each adjacent position of the end faces 57A to 57D on the bottom 51 side. Hereinafter, these corners will be referred to as bottom-side corners 60B.

[0019] Each of the bottom corners 60B also has the same notch shape on its outer edge as the opening corner 60A. Preferably, the shape of the outer edge of the bottom corners 60B is not a sharp corner, similar to the opening corner 60A. In this case, the size of the notch (if it is a notch) or the curvature (if it is a curved shape) may be different between the opening corner 60A and the bottom corners 60B. The bottom corners 60B may also be sharp corners. Details of the bottom corners 60B will be described later.

[0020] As shown in Figure 1, another container 50 can be placed on the stacking part 1, which is placed on the corner portion 60A of the opening, as shown in Figure 2. In this case, the bottom corner portion 60B of the other container 50 is placed on the stacking part 1. Note that the stacking configuration in Figure 2 is just one example and is not limited to this; as shown in another embodiment described later, the container 50 may be placed upside down.

[0021] • Outer edge portion of the side corner 60A of the opening To further explain the outer edge portion of the corner 60A on the opening side, we will first explain the end faces 54A to 54D on the opening 53 side using Figure 3.

[0022] Figure 3 is an enlarged perspective view of the area enclosed by the dashed line in Figure 1. Similar to Figure 7, Figure 3 shows the opening-side corner 60A at the adjacent location of the side wall portion 52B and the side wall portion 52C. The end face 54B located at the upper end of the side wall portion 52B has an adjacent outer side surface 55B (side surface) on the outer side of the container, and an adjacent inner side surface 56B (side surface) on the inner side of the container. Similarly, the end face 54C located at the upper end of the side wall portion 52C also has an adjacent outer side surface 55C (side surface) on the outer side of the container, and an adjacent inner side surface 56C (side surface) on the inner side of the container.

[0023] The outer side surface of the opening corner 60A shown in Figure 3 is composed of an outer side surface 55B, an outer side surface 55C, and an outer side surface 55BC located between these outer side surfaces 55B and 55C, which has a notched edge extending along the diagonal direction as described above.

[0024] The opening-side corner 60A at the adjacent location between side wall 52A and side wall 52D also has an outer side surface with a notched edge. Furthermore, the opening-side corner 60A at the adjacent location between side wall 52C and side wall 52D, and between side wall 52A and side wall 52B, also has an outer side surface with a notched edge.

[0025] In short, when the container 50 is viewed from above the opening 53, the container 50 includes four outer sides that form a notched shape, which are the tip portions of each opening side corner 60A.

[0026] <Stackable parts> The following describes this stacking part 1.

[0027] When the stacking part 1 is placed on each opening-side corner 60A of the container 50 shown in Figure 1, it has a predetermined height in the positive Z-axis direction above the end faces of the opening-side corner 60A (end faces 54B and 54C in the example of Figure 3). Therefore, when another container is placed on the stacking part 1 as shown in Figure 2, the lower container 50 and the upper container 50 are separated by a predetermined length. This length can be appropriately changed during the manufacturing process of the stacking part 1.

[0028] The stacking part 1 shown in Figure 4(a) can be broadly divided into a roughly L-shaped main body and branching parts that branch off from the main body.

[0029] (Body part) The main body portion is located between the end faces 54A-54D of the opening-side corner 60A of the lower container 50 and the end faces 57A-57D of the bottom-side corner 60B of the lower container, when positioned between two containers 50 as shown in Figure 2. As shown in Figure 4(a), the main body portion has an outer wall portion 2, an inner wall portion 3, and a plurality of connecting ribs 4. The main body portion also has a support plate 7 that extends in a direction perpendicular to the outer wall portion 2 and the inner wall portion 3. The outer wall portion 2 is a wall that extends in the vertical direction (Z-axis direction).

[0030] The inner wall portion 3 is provided with a space separating it from the outer wall portion 2, and has a shape that roughly follows the inner edge of the container 50 (the inner circumference of the opening 53), and is a wall that extends in the vertical direction (Z-axis direction).

[0031] Each connecting rib 4 is located in the space between the outer wall portion 2 and the inner wall portion 3, connecting the outer wall portion 2 and the inner wall portion 3. There are four connecting ribs 4. Each connecting rib 4 has a first support portion 44 (contact portion) at its lower end that contacts the end face of the opening side corner portion 60A (end face 54B and end face 54C in the example of Figure 3). The first support portion 44, which is the lower end of the connecting rib 4, corresponds to the lower end of the main body portion.

[0032] The main body has a hollow structure with the outer wall section 2 and the inner wall section 3 spaced apart. Therefore, the stacking part 1 can be made relatively lightweight, and the amount of material used for the stacking part 1 can be reduced, making it possible to realize the stacking part 1 at a low cost.

[0033] The outer wall portion 2 corresponds to the outer edge portion of the stacking part 1 facing outward from the container 50. As shown in Figure 3, the outer wall portion 2 has a corner region 20 located close to the outer side surface 55BC (tip portion) of the opening side corner portion 60A.

[0034] The corner region 20 corresponds to the area enclosed by the dashed line in Figure 5, which is a top view of the stacked parts 1 placed on the same opening-side corner 60A of the container 50 as in Figure 3. The corner region 20 is provided with a contact region 22 (lower contact region).

[0035] The contact area 22 is located on the inward side of the container 50, beyond the outer side surface 55BC of the opening corner 60A, and in the example shown in Figure 5, it contacts the end faces 54B and 54C of the opening corner 60A of the container 50. The position of the container 50 that is contacted by the contact area 22 is shown by a dashed line in Figure 7.

[0036] As shown in Figure 8, the stacking part 1 has a contact area 22 where the outer edge of the stacking part 1 abuts against the end faces 54A to 54D of the opening side corner 60A. This outer edge (outer wall portion 2) has a chamfered shape at the approximately L-shaped bend of the main body portion. Specifically, as shown in Figure 3, the bend is curved.

[0037] (Branching section) The branching section includes a branching section extending downward from the lower end of the main body and a branching section extending upward from the upper end of the main body. The branching section extending upward from the upper end of the main body will be described later, and below, we will describe the branching section extending downward from the lower end of the main body.

[0038] The branch portion extending downward from the lower end of the main body can contact the outer side surfaces 55A-55D and the inner side surfaces 56A-56D of the opening corner 60A of the container 50, respectively, when the stacking parts 1 are placed on the container 50. Specifically, as shown in Figure 4(a), the branch portion extending downward from the lower end of the main body is composed of outer downward restricting sections 25a, 25b (first restricting section, first lower wall section, lower lateral restricting section) that extend further downward from the lower end of the outer wall section 2, and inner downward restricting sections 27a, 27b (second restricting section, second lower wall section, lower lateral restricting section) that extend further downward from the lower end of the inner wall section 3.

[0039] As shown in Figure 3, the outer downward restricting portions 25a and 25b restrict the inward movement of the stacking part 1 when it is placed on the opening side corner 60A of the container 50. In the example in Figure 3, the outer downward restricting portion 25a restricts the movement of the stacking part 1 in the positive Y-axis direction by contacting the outer side surface 55B of the container 50. The outer downward restricting portion 25b restricts the movement of the stacking part 1 in the negative X-axis direction by contacting the outer side surface 55C.

[0040] The inner downward restricting portions 27a and 27b restrict the outward movement of the stacking part 1 when it is placed on the opening side corner 60A of the container 50 as shown in Figure 3. The inner downward restricting portion 27a abuts against the inner side surface 56B, and the inner downward restricting portion 27b abuts against the inner side surface 56C. As shown in Figure 4(a), the inner downward restricting portion 27a is positioned opposite the outer downward restricting portion 25a, and the inner downward restricting portion 27b is positioned opposite the outer downward restricting portion 25b. As shown in Figure 9 (cross-sectional view taken along the cutting line BB' shown in Figure 5), the inner downward restricting portion 27a restricts the movement of the stacking part 1 in the negative Y-axis direction by abutting against the inner side surface 56B. In addition, the inner downward restricting portion 27b restricts the movement of the stacking part 1 in the positive X-axis direction by abutting against the inner side surface 56C.

[0041] Between the inner downward restricting portion 27a and the inner downward restricting portion 27b, the lower end portion 33 of the inner wall portion 3 is configured to abut against or be in close proximity to the inner side surfaces 56B and 56C of the opening side corner portion 60A.

[0042] • Corner region 20 and contact region 22 The corner region 20 is located between the aforementioned outer downward restricting portion 25a and outer downward restricting portion 25b, and its position on the Z-axis is aligned with the lower end of the main body portion (outer wall portion 2). In other words, the corner region 20 is a surface that extends on the same plane as the first support portion 44 located at the lower end of the connecting rib 4.

[0043] The portion of the corner region 20 adjacent to the outer downward restricting portion 25a and the portion adjacent to the outer downward restricting portion 25b do not come into contact with the end face of the opening side corner portion 60A (end face 54B and end face 54C in the example of Figure 3). On the other hand, the aforementioned contact region 22 is located between these non-contacting portions.

[0044] Thus, a corner region 20 is formed on the outer edge of the stacking part 1 at a position close to the outer side surface 55BC (Figure 3), which is the tip of the opening-side corner 60A, and includes a contact region 22 that abuts against the end faces 54B and 54C of the container 50, thereby achieving stability in the placement of the stacking part 1. Specifically, the contact region 22 on the outer edge of the stacking part 1 abuts against the end faces 54B and 54C of the container 50 at a position close to the outer side surface 55BC (Figure 3), which is the tip of the opening-side corner 60A. This restricts the movement of the stacking part 1 outward from the container 50. Therefore, the stacking part 1 does not tip over outward from the container 50 and is stably placed on the end face of the container 50.

[0045] • Connecting ribs 4 on the main body The aforementioned connecting ribs 4 will be further explained using Figure 6. As shown in Figure 6, of the four connecting ribs 4, the first connecting rib 4p and the second connecting rib 4q, which are located near the tip of the opening side corner 60A, are positioned diagonally with respect to the X-axis and Y-axis directions, respectively. To explain in detail using the example in Figure 3, when viewing the stacked part 1 placed on the opening side corner 60A of the container 50 from above, the first connecting rib 4p is positioned diagonally with respect to the width direction (Y-axis direction) and the longitudinal direction (X-axis direction) (first direction) of the end face 54B. The second connecting rib 4q is also positioned diagonally with respect to the width direction (X-axis direction) and the longitudinal direction (Y-axis direction) (second direction) of the end face 54C. In other words, the first connecting rib 4p and the second connecting rib 4q are provided along the radial direction from the center of the container 50.

[0046] By arranging the first connecting rib 4p and the second connecting rib 4q diagonally as described above, a configuration is achieved in which the length is longer than the length of the end faces 54B and 54C in the width direction. As a result, the first support portion 44 provided at the lower end of each of the first connecting rib 4p and the second connecting rib 4q abuts against the end face of the opening side corner portion 60A over a relatively long length. This increases the area on which the load-bearing surface of the upper stacked container 50 (Figure 2) is received, allowing for a suitable distribution of the load and improving the stability of the stacked part 1 on the lower container 50.

[0047] The following describes the configuration of stacking part 1 and the upper container, as shown in Figure 2, when another container is placed on top of stacking part 1.

[0048] <Top container> The upper container 50 shown in Figure 2 will be explained using Figures 10 and 11. The upper container 50 is a container with the same configuration as the container 50 explained in Figure 1. When the upper container 50 is placed on the stacking part 1, if the bottom 51 of the container 50 is in contact with the stacking part 1, then, as shown in Figure 2, the upper container 50 can be stacked on top of the lower container 50 in the normal orientation of a normally placed container.

[0049] • Bottom 51 of container 50 (bottom side corner 60B) As shown in Figure 10, the upper container 50 is placed on the stacking part 1 by its bottom 51 contacting the upper end of the main body portion of the stacking part 1.

[0050] The bottom portion 51 is the part corresponding to the lower side (negative Z-axis direction side) of the storage space of the container 50. More specifically, as shown in Figure 11, the bottom portion 51 is composed of a central portion 51c having a plurality of concave shapes 51a that are recessed toward the opening 53 side of the container 50, and a peripheral portion 51f surrounding the central portion 51c.

[0051] Adjacent to the peripheral portion 51f of the bottom corner portion 60B in the central portion 51c, a receiving portion 80 is provided to receive the inner upper restricting portions 28a and 28b of the stacking part 1, as will be described later. Alternatively, the receiving portion 80 may be a portion surrounded by a rib-shaped portion extending downward from the bottom portion 51, or it may be a through hole (through shape).

[0052] The peripheral portion 51f is composed of the lower end of the side wall portion 52A, the lower end of the side wall portion 52B, the lower end of the side wall portion 52C, and the lower end of the side wall portion 52D shown in Figure 1. The lower ends of these side wall portions 52A to 52D include the end faces 57A to 57D, the outer sides 58A to 58D adjacent to the end faces 57A to 57D, and the inner sides 59A to 59D adjacent to the end faces 57A to 57D. The outer sides 58A to 58D constitute the outer edge portion of the bottom side corner portion 60B. The inner sides 59A to 59D are included in the inner circumferential surface of the receiving portion 80. In Figure 11, the outer sides 58B and inner sides 59B adjacent to the end face 57B, and the outer sides 58C and inner sides 59C adjacent to the end face 57C are shown. In the example shown in Figure 11, the bottom corner 60B of the bottom 51 of the upper container 50 is located adjacent to an elongated end face 57B along the X-axis and an elongated end face 57C along the Y-axis, with both being perpendicular to each other.

[0053] As shown in Figure 11, the outer edge of the bottom corner portion 60B has edges that extend diagonally with respect to the end faces 57B and 57C, respectively. In short, the bottom corner portion 60B is not a sharp corner formed by the intersection of a side along the X-axis and a side along the Y-axis at a right angle, but rather has a notched or curved shape, similar to the outer edge of the opening corner portion 60A. Alternatively, it may have a special shape as described later. In the example in Figure 11, the outer surface of the bottom corner portion 60B is composed of an outer surface 58B, an outer surface 58C, and an outer surface 58BC located between these outer surfaces, which has edges that extend diagonally with respect to the X and Y axes. This outer surface 58BC corresponds to the notched outer edge surface described above. In short, when the bottom 51 of the upper container 50 is viewed from the lower container 50 side, the outer edge portion of each bottom corner 60B includes a notched outer edge end face (tip portion).

[0054] <Configuration of stacking part 1 related to placing the upper container> As shown in Figure 4(b), the stacking part 1 includes a second support portion 48 (second contact portion) at the upper end of the connecting rib 4 (including 4p and 4q) that abuts against the end face of the corner of the upper container.

[0055] In this embodiment 1, each connecting rib 4 (including 4p and 4q) is continuous along the Z-axis from the first support portion 44 to the second support portion 48. For example, the first support portion 44 and the second support portion 48 may be provided separately with the support plate 7 as the boundary, and they do not need to be continuous with each other. However, it is preferable that they are continuous, as in the case of the first connecting rib 4p and the second connecting rib 4q, because this increases the strength of the stacked part 1.

[0056] With the upper container 50 placed on the stacking part 1, the end faces 57A to 57D abut against the upper end of the main body portion of the stacking part 1. Specifically, the end faces 57A to 57D of the bottom portion 51 (end faces 57B and 57C in the example of Figure 11) abut against the second support portion 48 provided on the upper end of the connecting rib 4 of the stacking part 1.

[0057] Furthermore, the branch portion extending upward from the upper end of the main body portion can contact the outer side surfaces 58A-58D and inner side surfaces 59A-59D of the bottom corners 60B of the upper container 50 placed on the stacking part 1, respectively. Specifically, the branch portion extending upward from the upper end of the main body portion is composed of outer upper restricting portions 26a, 26b (first restricting portion, first upper wall portion) that extend further upward from the upper end of the outer wall portion 2, and inner upper restricting portions 28a, 28b (second restricting portion, second upper wall portion) that extend further upward from the upper end of the inner wall portion 3.

[0058] The outer upper restricting portions 26a and 26b, when the bottom corner portion 60B of the upper container 50 is placed on top of the upper container, face and abut against the outer side surface of the bottom corner portion 60B of the upper container, thereby restricting the outward movement of the upper container 50. In the example shown in Figure 11, the outer side surface 58B or outer side surface 58C of the upper container 50 abuts against the outer upper restricting portion 26a or outer upper restricting portion 26b, thereby restricting the movement of the upper container 50 in the negative Y-axis direction or the positive X-axis direction.

[0059] The inner upper restricting portions 28a and 28b, when the bottom corner portion 60B of the upper container 50 is placed on top of the upper container 50, face and abut against the inner side surface of the bottom corner portion 60B of the upper container 50, thereby restricting the inward movement of the upper container 50. In the example shown in Figure 11, the inner side surface 59B or inner side surface 59C of the upper container 50 abuts against the inner upper restricting portion 28a or inner upper restricting portion 28b, thereby restricting the movement of the upper container 50 in the positive Y-axis direction or the negative X-axis direction.

[0060] Here, the distance between the outer downward restricting portion 25a (or outer downward restricting portion 25b) and the inner downward restricting portion 27a (or inner downward restricting portion 27b) is equal to the distance between the outer upward restricting portion 26a (or outer upward restricting portion 26b) and the inner upward restricting portion 28a (or inner upward restricting portion 28b).

[0061] Between the outer upper restricting portion 26a and the outer upper restricting portion 26b, the upper end of the outer wall portion 2 is exposed. As shown in the example in Figure 11, this upper end has the same corner region 20' as the aforementioned corner region 20, located close to the outer side surface 58BC (tip portion) of the bottom side corner portion 60B of the bottom portion 51. The corner region 20' corresponds to the area enclosed by the dashed line in Figure 11. In part, the corner region 20' has a contact region 22' (upper contact region) that abuts against the end faces 57A to 57D of the bottom side corner portion 60B of the bottom portion 51.

[0062] The contact area 22' is the area enclosed by the dotted line in Figure 11. That is, when the upper container is placed on the stacking part 1, the corner area 20' is located close to the outer side surface 58BC (tip portion) of the bottom corner 60B of the upper container 50. This corner area 20' is located on the inner side of the container 50 than the outer side surface 58BC of the bottom corner 60B, and in the example of Figure 11, the contact area 22' is provided that abuts against the end faces 57B and 57C of the bottom corner 60B. Here, the corner area 20' (contact area 22') is a surface that extends on the same plane as the second support portion 48 at the upper end of the connecting rib 4. That is, the corner areas 20, 20' and the contact areas 22, 22', 22a, 22b are also the contact portion (part of the first contact portion or the second contact portion) in the claims.

[0063] As described above, the outer edge of the stacking part 1 has a contact area 22' that abuts against the end face of the bottom corner 60B, and therefore the outer edge is chamfered at the approximately L-shaped bend of the main body.

[0064] In the example shown in Figure 11, the inner upper restricting portion 28a is located opposite the outer upper restricting portion 26a, and the inner upper restricting portion 28b is located opposite the outer upper restricting portion 26b.

[0065] Here, as shown in Figures 11 and 12, the inner upper restricting portion 28b is received by the receiving portion 80 and faces the inner side surface 59C. The inner upper restricting portion 28b restricts the movement of the upper container 50 in the negative X-axis direction by contacting the inner side surface 59C. Similarly, the inner upper restricting portion 28a shown in Figure 11 is also received by the receiving portion 80 and faces the inner side surface 59B, and restricts the movement of the upper container 50 in the positive Y-axis direction by contacting the inner side surface 59B.

[0066] As can be seen from the above, the configuration of the upper container side of the stacking part 1 is the same as the configuration of the lower container side. That is, the configuration in which the stacking part 1 comes into contact with the upper container when the upper container is placed on the stacking part 1 is the same as the configuration in which the stacking part 1 comes into contact with the lower container when the lower container is placed on the stacking part 1. For this reason, the stacking part 1 can be placed on a container located below, regardless of its orientation in the vertical direction, and can be placed on a container located above, regardless of which side is used.

[0067] Here, with the inner upper restricting portions 28a and 28b of the stacking part 1 in contact with the inner sides 59B and 59C, there may be a predetermined gap of distance d1 between the outer side 58B and the outer upper restricting portion 26a, and between the outer side 58C and the outer upper restricting portion 26b, as shown in Figure 11.

[0068] As described above, the stacking stability of the stacking part 1 can be achieved by forming a corner region 20' on the outer edge of the stacking part 1, at a position close to the outer side surface 58BC (Figure 11) of the bottom corner 60B of the upper container 50, which includes a contact region 22' that abuts against the end faces 57B and 57C of the upper container 50. This configuration is particularly significant when the stacking part 1 is placed on the bottom corner 60B of the bottom 51 of an inverted container 50. In other words, with the above configuration, the contact region 22' of the outer edge of the stacking part 1 abuts against the end faces 57B and 57C of the container 50 at a position close to the outer side surface 58BC of the bottom corner 60B, thereby restricting the movement of the stacking part 1 outward from the inverted container 50. As a result, the stacked parts 1 do not tip over outwards from the inverted container 50, and are stably placed on the end surface of the inverted container 50.

[0069] Here, as shown in Figure 12, the thickness d2 of the outer wall portion 2 is set to be thicker than the thickness d3 of the outer lower restricting portion 25b. Although not shown, the thickness of the other outer lower restricting portion and outer upper restricting portion is set similarly to the thickness d2 of the outer wall portion 2. Also, although not shown, the thickness of the inner wall portion 3 is set to be thicker than the thickness of the inner lower restricting portion and inner upper restricting portion. In other words, when combining the stacking part 1 with the container 50, the branching portion is wide open in the initial stage of combination, making it difficult for the stacking part 1 and the container 50 to come into contact. This makes combination easy.

[0070] The container 50 and the stacking parts 1 are made of resin (for example, polypropylene, polyethylene, etc.). Although the container 50 illustrated in this embodiment has a rectangular parallelepiped shape, it is not limited to this and may also be a cube.

[0071] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0072] [Embodiment 2] This second embodiment and the first embodiment described above differ in that the stacking part 1 itself is the same, but the orientation of the containers being stacked is different.

[0073] In Figure 13, the container 50 placed on the stacking part 1 is an inverted container. In short, the inverted container 50 is positioned with its opening 53 facing the lower container 50 and its bottom 51 facing upward. By stacking in this manner, the opening 53 of the lower container 50 and the opening 53 of the upper container 50 face each other, and the stacked containers 50 form one large storage space inside.

[0074] In the example shown in Figure 14, the corner region 20' of the stacked part 1 faces the opening-side corner portion 60A, which is adjacent to the end faces 54A and 54B on the opening side of the upper, inverted container 50, and the contact region 22' of the corner region 20' is in contact with the end faces 54A and 54B of the opening-side corner portion 60A.

[0075] In the example shown in Figure 14, the outer side surface 55A adjacent to the end surface 54A of the upper inverted container 50 is in contact with the outer upper restricting portion 26b of the stacking part 1. Also, the inner side surface 56A adjacent to the end surface 54A of the upper inverted container 50 is in contact with the inner upper restricting portion 28b of the stacking part 1.

[0076] Even when the containers 50 are stacked with their openings 53 facing each other, as shown in this second embodiment, there is a distance between the containers equal to the length of the main body of the stacking part 1 in the Z-axis direction. In Figure 14, this distance is shown as d4. As shown in Figure 15, another container 50 may be placed on its side and stored in the large storage space formed inside. The container placed on its side may be a container with the same configuration as the stacked containers 50, or it may be a container with a different configuration.

[0077] [Embodiment 3] This embodiment 3 and the above-described embodiment 1 are identical in that the stacking part 1 itself is the same, but the number of containers to be stacked and their orientation are different.

[0078] In Figure 16, four containers are stacked. The bottom container 50 is a container placed normally with its opening 53 facing upwards, the second container 50 from the bottom is a container placed upside down with its opening 53 facing downwards, the third container 50 from the bottom is a container placed normally with its opening 53 facing upwards, and the top container 50 is a container placed normally with its opening 53 facing upwards. Thus, in this embodiment 3, by using the stacking part 1, it can be attached to both the upside-down container 50 and the normally placed container 50.

[0079] [Embodiment 4] This embodiment 4 and the above-described embodiment 1 are identical in that the stacking part 1 itself is the same, but the shape of the opening side corner 60A and the bottom side corner 60B of the container are different from the notched shape shown in Figure 3, etc.

[0080] For the sake of explanation, in Figure 17, the stacking parts 1 are not placed on some of the corner portions 60A of the opening. The container 50 used in this embodiment 4 differs from the notch shape shown in Figure 1 in that the corner portion 60A of the opening has a rectangular cutout at the adjacent point between the end faces. This rectangular cutout shape will be explained using Figure 18. As shown in Figure 18, in the corner portion 60A of the opening, at the point where the end face 54B and the end face 54C are adjacent, the outer side surface 55B and the outer side surface 55C virtually intersect at a right angle is cut out in a rectangular shape. Due to this rectangular cutout, the tip portion of the corner portion 60A of the opening is composed of a first tip portion 55BCa and a second tip portion 55BCb.

[0081] Furthermore, this rectangular cutout shape is also provided at adjacent points on the bottom side corners 60B.

[0082] Even with the opening-side corner 60A (bottom-side corner 60B) having such a specially shaped notch, the stacking part 1 maintains stability when placed on a surface. This will be explained using Figure 19.

[0083] The outer edge of the stacking part 1 has a corner region 20 at a position close to the tip portion (first tip portion 55BCa and second tip portion 55BCb) of the opening side corner portion 60A. The corner region 20 is provided with a contact region 22a and a contact region 22b. The contact region 22a is located on the inward side of the container 50 beyond the first tip portion 55BCa of the outer side surface of the opening side corner portion 60A, and in the example of Figure 19, it contacts the end face 54B of the opening side corner portion 60A of the container 50. Similarly, the contact region 22b is located on the inward side of the container 50 beyond the second tip portion 55BCb of the outer side surface of the opening side corner portion 60A, and in the example of Figure 19, it contacts the end face 54C of the opening side corner portion 60A of the container 50. The positions on the container 50 side that are contacted by the contact regions 22a and 22b are shown by dashed lines in Figure 18.

[0084] Even in the fourth embodiment described above, the contact areas 22a and 22b of the outer edge portion of the stacking part 1 contact the end faces 54B and 54C of the container 50. This restricts the movement of the stacking part 1 outward from the container 50. Therefore, the stacking part 1 does not tip over outward from the container 50 and is stably placed on the end face of the container 50.

[0085] 〔summary〕 A stacking part 1 according to embodiment 1 of the present invention is a stacking part used by being placed on the corner of a container, wherein the stacking part comprises a contact portion that abuts against the container when placed on the corner of the container, a first restricting portion that restricts the inward movement of the stacking part, and a second restricting portion that restricts the outward movement of the stacking part, wherein the corner of the container is provided with an end face located opposite the contact portion when the stacking part is placed on the corner of the container, and a side surface adjacent to the end face and facing the first restricting portion and the second restricting portion, respectively, wherein when the stacking part placed on the corner of the container is viewed from above, the outer edge portion of the stacking part facing outward from the container overlaps with the tip portion of the corner at a position close to the tip portion of the corner, or is located inward from the tip portion of the container, and the outer edge portion has a contact area that abuts against the end face of the container at a position close to the tip portion of the corner.

[0086] According to the configuration of the above embodiment 1, stackable parts that can be stably placed on the corners of a container are realized.

[0087] The stacking part 1 according to embodiment 2 of the present invention, in embodiment 1, has an outer wall portion extending vertically in the portion of the outer edge of the stacking part adjacent to the tip of the corner portion, the inner edge of the stacking part has an inner wall portion extending vertically separated from the outer wall portion by a space, a connecting rib is provided in the space between the outer wall portion and the inner wall portion, the lower end of the connecting rib is provided with the contact portion, the first restricting portion is a first lower wall portion extending further downward from the lower end of the outer wall portion and has a first lower wall portion facing the side surface facing outward of the container, and the second restricting portion is a second lower wall portion extending further downward from the lower end of the inner wall portion and has a second lower wall portion facing the side surface facing inward of the container.

[0088] According to the configuration of the above embodiment 2, the stacking parts have a generally hollow structure, which allows for weight reduction and reduces the amount of material used for the stacking parts, thus enabling the creation of stacking parts at a low cost.

[0089] The stacking part 1 according to embodiment 3 of the present invention, in embodiment 2, the corner of the container includes a region in which a first end face extending along a first direction and a second end face extending along a second direction different from the first direction are in the same plane, the connecting rib includes a first connecting rib located above the first end face and a second connecting rib located above the second end face, and when the stacking part placed on the corner of the container is viewed from above, the first connecting rib is positioned diagonally with respect to the width direction and the first direction of the first end face, and the second connecting rib is positioned diagonally with respect to the width direction and the second direction of the second end face.

[0090] According to the configuration of embodiment 3, a configuration can be achieved in which the first connecting rib and the second connecting rib are in contact for a distance longer than the length along the width direction of the end face of the corner. As a result, the area on which the stacked parts are stacked in the container that receives the load load is large, the load load can be suitably distributed, and the stability of the stacked parts 1 on the container can be improved.

[0091] The stacking part 1 according to embodiment 4 of the present invention, in embodiment 2 or 3, allows the stacking part placed on the corner of the container to support the corner of another container, and the stacking part includes a second contact portion that contacts the end face of the corner of the other container at the upper end of the connecting rib.

[0092] According to the configuration of embodiment 4, a configuration can be realized in which the lower end of the connecting rib abuts against and supports the lower container, while the upper end of the connecting rib abuts against and supports the upper container, thereby realizing a configuration in which two stacked containers are supported by a continuous connecting rib structure. As a result, the strength of the stacked parts can be improved compared to an embodiment in which the rib that abuts against and supports the upper container and the rib that abuts against and supports the lower container are in different positions in the vertical direction.

[0093] The stacking part 1 according to aspect 5 of the present invention, in aspects 2 to 4, allows the corner of another container to be placed on the stacking part that is placed on the corner of the container, the first restricting part has a first lower wall portion and a first upper wall portion that extends further upward from the upper end of the outer wall portion and is opposed to the side surface of the corner of the other container facing outward, the second restricting part has a second lower wall portion and a second upper wall portion that extends further upward from the upper end of the inner wall portion and is opposed to the side surface of the other container facing inward, and the outer edge portion of the stacking part has a contact area that contacts the end surface of the other container at a position close to the tip of the corner of the other container.

[0094] According to the configuration of embodiment 5 described above, the stacking parts can be placed on the container located below, regardless of their orientation in the vertical direction, and can also be placed on the container located above, regardless of which side is used. The orientation of the upper container relative to the stacking parts can be either normal or upside down.

[0095] In embodiment 6 of the present invention, the stacking part 1 in embodiment 5 is provided with a concave or through-shaped receiving portion at the bottom of the container and the other container, the side surface being included as an inner circumferential surface, the stacking part can be placed on the corner of the bottom of the container by the second lower wall portion being received by the receiving portion at the bottom of the container when the bottom is facing upward and facing the side surface, and the stacking part can be placed on the corner of the bottom of the other container by the second upper wall portion being received by the receiving portion at the bottom of the other container when the bottom is facing downward and facing the side surface.

[0096] According to the configuration of the above embodiment 6, stacking parts can be stably placed on a container having a bottom with a receiving section.

[0097] The stacking part 1 according to embodiment 7 of the present invention is a stacking part used by attaching it to the opposing corners of two containers when stacking two containers, wherein each corner is provided with an end face located at an opposing position between the two containers, and a side surface adjacent to the end face and located on the outer and inner sides of the container, respectively, and the stacking part has a first contact portion that abuts the end face of the lower container of the two containers, a lower side restricting portion that faces the side surface of the lower container, and a portion on the end face of the upper container of the two containers The stacking part includes a second contact portion that abuts against the upper container and an upper lateral restricting portion that faces the side surface of the upper container. When the stacking part attached to the corner of the lower container is viewed from above, the outer edge portion of the stacking part facing outward from the lower container either overlaps with the tip portion of the corner of the lower container or is located inward from the tip portion of the container, and the outer edge portion has a contact area that abuts against the end face of the lower container at a position close to the tip portion of the corner of the lower container.

[0098] According to the configuration of the above embodiment 7, stackable parts that can be stably placed on the corners of a container are realized.

[0099] [Additional Notes] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of Symbols]

[0100] 1-tier stacking parts 2 Outer wall 3 Inner wall 4 connecting ribs 4p First connecting rib 4q Second connecting rib 20 corner area 22, 22´, 22a, 22b contact area 25a, 25b Outer downward regulation part (first lower wall part) 26a, 26b Outside upper restriction part (first upper wall part) 27a, 27b Inner lower regulation part (second lower wall part) 28a, 28b Inner upper regulation part (second upper wall part) 44 1st support part 48 Second support part 50 containers 51 Bottom 52A, 52B, 52C, 52D side wall section 53 Opening 54A, 54B, 54C, 54D, 57A, 57B, 57C, 57D End face 55BCa First tip 55BCb Second tip 55A, 55B, 55C, 55D, 55AB, 55BC, 55CD, 55AD, 58A, 58B, 58BC, 58C External side 56A, 56B, 56C, 56D, 59A, 59B, 59C, 59D Medial side 60A Corner of the opening 60B Bottom side corner 80 Receptor part

Claims

1. A stacking part that is placed on the corner of a container, The stacked parts, when placed on the corners of the container, The contact portion that comes into contact with the container, A first restricting unit that restricts the inward movement of the stacked parts, A second restricting unit that restricts the outward movement of the stacked parts, Equipped with, The corner of the container is such that when the stacking parts are placed on the corner of the container, The end face located opposite the contact portion, A side surface adjacent to the end face and facing the first restricting portion and the second restricting portion, A system was established, When the stacking part placed on the corner of the container is viewed from above, the outer edge portion of the stacking part facing outward from the container is located inward from the tip portion of the container at a position close to the tip portion of the corner, The outer edge portion has a contact area that abuts against the end face of the container at a position close to the tip of the corner portion, The contact region of the outer edge portion is located in the region where the first end face, which is the end face of the container and is elongated along the first axial direction, and the second end face, which is elongated along the second axial direction perpendicular to the first axial direction, intersect. Stackable parts.

2. A stacking part used by being placed on the corner of a container, The stacked parts, when placed on the corners of the container, The contact portion that comes into contact with the container, A first restricting unit that restricts the inward movement of the stacked parts, A second restricting unit that restricts the outward movement of the stacked parts, Equipped with, The corner of the container is such that when the stacking parts are placed on the corner of the container, The end face located opposite the contact portion, A side surface adjacent to the end face and facing the first restricting portion and the second restricting portion, A system was established, When the stacked part placed on the corner of the container is viewed from above, the outer edge portion of the stacked part facing outward from the container overlaps with the tip portion of the corner at a position close to the tip portion, or is located inward from the tip portion of the container. The outer edge portion has a contact area that abuts against the end face of the container at a position close to the tip of the corner portion, An outer wall portion extending in the vertical direction is provided in the portion of the outer edge of the stacked part that is adjacent to the tip of the corner portion. The inner edge portion of the stacked part has an inner wall portion that extends vertically and is provided with a space between it and the outer wall portion. A connecting rib is provided in the space between the outer wall portion and the inner wall portion. The lower end of the connecting rib is provided with the contact portion, The first regulating portion is a first lower wall portion that extends further downward from the lower end of the outer wall portion, and has a first lower wall portion that faces the side surface facing outward from the container, The second regulating portion is a second lower wall portion that extends further downward from the lower end of the inner wall portion, and has a second lower wall portion that faces the side surface facing inward of the container. Stackable parts.

3. The corner of the container includes a region in which the first end face extending along the first direction and the second end face extending along a second direction different from the first direction are in the same plane. The aforementioned connecting rib is The first connecting rib located above the first end face, The second connecting rib located above the second end face, Includes, When the stacked parts placed on the corners of the container are viewed from above, The first connecting rib is positioned obliquely to the width direction and the first direction of the first end face, The second connecting rib is positioned obliquely to the width direction and the second direction of the second end face, The stacking parts according to claim 2.

4. The stacking part placed on the corner of the container can have the corner of another container placed on it. The aforementioned stacking parts are The second contact portion that abuts against the end face of the corner of the other container is included at the upper end of the connecting rib, The stacking part according to claim 2 or 3.

5. The stacking part placed on the corner of the container can have the corner of another container placed on it. The first regulating portion has the first lower wall portion and a first upper wall portion that extends further upward from the upper end of the outer wall portion and faces the side surface of the other container that faces outward from the corner portion. The second regulating portion has the second lower wall portion and a second upper wall portion that extends further upward from the upper end of the inner wall portion and faces the side surface that faces inward to the other container. The outer edge portion of the stacking part has, in addition to the contact area, a contact area that contacts the end face of the other container at a position close to the tip of the corner of the other container. The stacking part according to any one of claims 2 to 4.

6. The bottom of each of the aforementioned container and the other container is provided with a receiving portion that is concave or through-shaped, including the side surface as the inner circumferential surface. The aforementioned stacking parts are The second lower wall portion is received by the receiving portion of the bottom of the container when the bottom is facing upward and faces the side surface, so that it can be placed on the corner of the bottom of the container. The aforementioned stacking parts are The second upper wall portion is received by the receiving portion of the bottom of the other container when the bottom is facing downwards and faces the side surface, thereby allowing the corner portion of the bottom of the other container to be placed on it. The stacking parts according to claim 5.

7. A stacking part used by attaching it to the opposing corners of two containers when stacking them, Each of the aforementioned corners, The end faces of the containers that are facing each other, Adjacent to the end face, the side surfaces located on the outer and inner sides of the container, A system was established, The aforementioned stacking parts are A first contact portion that contacts the end face of the lower of the two containers, A lower lateral restricting portion facing the aforementioned side surface of the lower container, A second contact portion that contacts the end face of the upper of the two containers, An upper lateral restricting portion facing the aforementioned side surface of the upper container, Includes, When the stacking part attached to the corner of the lower container is viewed from above, the outer edge portion of the stacking part facing outward from the lower container overlaps with the tip portion of the corner of the lower container at a position close to the tip portion, or is located inward from the tip portion of the container. The outer edge portion has a contact area that abuts against the end face of the lower container at a position close to the tip of the corner of the lower container. Stackable parts.

Images