Transport container

Abstract

To provide an excellent transport container which can smoothly and efficiently perform a pushing operation for moving it onto a rack or the like or a pulling operation for moving it from the rack or the like.SOLUTION: A transport container has a bottom surface that is rectangular in a plan view, and the other side wall portion 15 on a near side that rises from a bottom surface. An engagement portion having an opening 18A that opens downward is disposed on an inside of the other side wall portion on the near side, and an engagement space portion 19 is disposed below the engagement portion. When a tip end L2 of a drive shaft L1 is inserted into the opening, an inner contact surface L2A of the tip end can contact an inner contact point. An outer contact surface L2B of the tip end can contact an outer contact point. By moving the tip end of the drive shaft in a direction of an arrow K1 and in an opposite direction, the transport container can be pushed onto a rack (pushing operation) and pulled from the rack (pulling operation) smoothly and efficiently.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a transport container used to transport contents and the like. [Background technology]

[0002] Conventionally, transport containers are configured to be assembled into a box shape that opens upward. Specifically, some containers have a bottom wall that is generally rectangular in plan view, and bases are attached to each side of the bottom wall so that they protrude upward from the bottom wall. The side walls are rotatably connected to the bases, so that the side walls can be folded above the bottom wall in a front-to-back fold relationship. Furthermore, there are foldable containers whose bottom and side walls are made of plastic, which can be freely folded using hinges or locking fittings (see, for example, Patent Document 1).

[0003] These transport containers include not only foldable containers but also non-foldable containers. In addition to the method of use in which workers directly lift and transport the transport containers, they can also be loaded onto transport pallets and transported using a forklift or similar. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 54-054539 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, there has been a demand for transport containers that can be used more smoothly and efficiently for transporting items stored in the container to storage racks, shelves, etc. (for example, pushing or pulling) and storing items (for example, storing items on racks, shelves, etc.).

[0006] The present invention has been made to solve the above-mentioned problems, and its object is to provide a transport container that allows smoother and more efficient transport operations (for example, pushing or pulling the container onto a rack or shelf) and storage operations (for example, storing the container on a rack or shelf). [Means for solving the problem]

[0007] Means suitable for achieving the above objects are described below. The transport container described in Means 1 has a resin bottom portion that is rectangular in plan view and has one and other sides that face each other, a bank portion that is integrally formed along one and other sides of the bottom portion, and a resin peripheral side wall portion that is supported by the bank portion and is swingably connected to the bank portion. The peripheral side wall portion has one-side side walls that face each other and another-side side walls that adjoin the one-side side walls and face each other. The one-side side walls and the other-side side walls are in a leading and trailing relationship, and the vertical thickness of the bank portion on the other-side side wall side of the trailing tatami mat is thicker than the vertical thickness of the bank portion on the one-side side wall side of the leading tatami mat, so that the one-side side wall of the leading tatami mat and the other-side side wall of the trailing tatami mat can swing between a state in which they stand up from the bank portion and a state in which they are folded down. The folding container for transport comprises a central shaft provided at the center of the lower end of the other side wall in the direction along the other side, and two side shafts arranged in the direction along the other side on both sides of the central shaft at the lower end of the other side wall, and the bank on the other side wall side comprises an engagement space formed so that its vertical dimension is longer than half the dimension between the upper and lower ends of the bank on the other side wall. The engagement portion connected to the engagement space portion is equipped with a hooking space portion that opens downward and is connected to the engagement space portion and is arranged side by side at a distance in a direction along the other side, a cross-sectionally L-shaped wall portion consisting of a horizontal portion extending from the inside to the outside in a direction along one side and a lower portion extending downward from the outer end of the horizontal portion to form the hooking space portion, a rib extending in a direction along the other side, a central swinging receiving portion adjacent to the rib that swingably supports the central shaft portion, and both side swinging receiving portions on both sides of the central swinging receiving portion that swingably support both side shaft portions, respectively. A portion of the lower part within the hooking space forms the outer abutment point, and a portion of the opposite side of the outer abutment point within the hooking space forms the inner abutment point, and the driven transport engagement means, which moves back and forth linearly between the outside and the inside in a direction along one side of the bottom surface, has an inner abutment surface of the hook part that bends upward and is capable of abutting against the inner abutment point within the hooking space, and the outer abutment surface of the hook part is capable of abutting against the outer abutment point within the hooking space.

[0008] According to the transport container described in Means 2, in the transport container described in Means 1, it is preferable that the engagement space portion has a movement-permitting space in which the drive-type transport engagement means can move linearly along one side from the outside in the direction along one side to the lower part of the hooking space portion when the hook portion is disengaged from the hooking space portion.

[0009] According to the transportation container described in the first or second aspect, it is preferable that the engaging portion is disposed near the bottom portion. According to the above-mentioned transport container, in the transport container described in means 1 or means 2, it is preferable that the peripheral side wall portion has a bank portion arranged on the bottom surface side, and an engaging portion is arranged near the bank portion or near the bottom surface.

[0010] According to the above-mentioned transport container, in the transport container described in means 1 or means 2, the peripheral side wall portion is provided with an L-shaped cross-sectional wall portion that opens downward and extends horizontally and outward, and it is preferable to further provide a peripheral rib that connects the L-shaped cross-sectional wall portion and the peripheral side wall portion.

[0011] According to the transport container described in means 1 or 2, the surrounding side wall portion connects the opposing one-side side wall portion and the opposing other-side side wall portion, and the one-side side wall portion and the other-side side wall portion are in a leading and trailing relationship, and the other-side side wall portion of the trailing trailing edge preferably has an embankment portion disposed on the bottom surface side, and an engaging portion is disposed on the embankment portion.

[0012] According to the above-mentioned transport container, in the transport container described in means 1 or means 2, it is preferable that an engagement space portion having a dimension length longer than half the thickness of the bank portion is arranged below the engagement portion.

[0013] According to the above-mentioned transport container, in the transport container described in means 1 or means 2, it is preferable that an engagement space portion capable of accommodating the hook portion of the drive-type transport engagement means is arranged below the engagement portion, and the dimension length is longer than the thickness of the bottom portion.

[0014] According to the above-mentioned transport container, in the transport container described in means 1 or means 2, it is preferable that an outer wall portion is arranged at an outer position around the engagement portion and the periphery of the engagement portion when the driven type transport engagement means moves from the outside to the inside, and a hooking space portion capable of accommodating the hook portion of the driven type transport engagement means is arranged at an inner position of the outer wall.

[0015] According to the above-mentioned transport container, in the transport container described in means 1 or means 2, it is preferable that a hooking space capable of accommodating multiple hook portions of the drive-type transport engagement means is arranged at and around the engagement portion, and that peripheral ribs are arranged to surround the multiple hooking spaces.

[0016] According to the transport container, in the transport container described in means 1 or 2, it is preferable that a plurality of hooking spaces are arranged side by side in the horizontal direction and that the plurality of hooking spaces are connected by connecting ribs. [Effects of the Invention]

[0017] According to the present invention, an excellent transport container can be provided that allows for smoother and more efficient movement operations (for example, pushing or pulling the container to move it onto a rack or shelf, etc.) and storage operations (for example, storing the container on a rack or shelf, etc.). [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a state in which a peripheral side wall portion rises from a bottom surface portion in this embodiment of the present invention; [Figure 2] FIG. 2 is a front view of the shipping container of FIG. 1. [Figure 3]FIG. 2 is a side view of the shipping container of FIG. 1. [Figure 4] FIG. 2 is a plan view of the shipping container of FIG. 1. [Figure 5] FIG. 2 is a perspective view of the transport container of the present embodiment, with the peripheral side wall portion folded onto the bottom portion. [Figure 6] FIG. 6 is a front view of the shipping container of FIG. 5. [Figure 7] FIG. 6 is a side view of the shipping container of FIG. 5. [Figure 8] FIG. 6 is a plan view of the shipping container of FIG. 5. [Figure 9] FIG. 2 is an enlarged perspective view of a portion of the periphery of an engaging portion in the transport container of the present embodiment. [Figure 10] 10 is an explanatory diagram showing an enlarged inner cross section (horizontal direction) of the engaging portion and its surroundings in FIG. 9; FIG. [Figure 11] 10 is an explanatory diagram showing an enlarged view of the inner cross section (vertical direction) of the engaging portion and its surroundings in FIG. 9; [Figure 12] FIG. 10 is a perspective view showing a modified example of the side wall portion of the transport container of the present embodiment. [Figure 13] FIG. 13 is an enlarged perspective view of a portion of the side wall portion shown in FIG. 12. DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A transportation container according to an embodiment of the present invention will now be described with reference to the drawings. 1 and 5 are perspective views showing a state in which the peripheral side wall portion 12 stands up from the bottom surface portion 11 of the transport container 10 of this embodiment, and a state in which the peripheral side wall portion 12 is folded onto the bottom surface portion 11. FIGS. 2 and 6 are front views of FIGS. 1 and 5, respectively. FIGS. 3 and 7 are side views of FIGS. 1 and 5, respectively. FIGS. 4 and 8 are plan views of FIGS. 1 and 5, respectively. FIG. 9 is an enlarged perspective view showing an engagement portion 18 and a portion of its periphery to which a pushing force for a pushing operation for transport or a pulling force for a pulling operation for transport is applied. FIGS. 10 and 11 are explanatory views showing enlarged inner cross sections (horizontal and vertical directions) of the engagement portion 18 and its periphery, respectively.

[0020] Next, the three axial directions (X-axis, Y-axis, and Z-axis) of the transport container 10 of this embodiment will be described. In this case, the direction along the long side of the peripheral sidewall portion 12 of the bottom portion 11 is referred to as the "Y-axis direction" (horizontal direction), and the direction along the short side is referred to as the "X-axis direction" (horizontal direction). The Y-axis direction and the X-axis direction are perpendicular to each other, and the direction intersecting the Y-axis direction and the X-axis direction is referred to as the "Z-axis direction" (up-down direction or vertical direction). In this case, a pushing force or a pulling force is applied to the transport container 10, for example, in the Y-axis direction, which becomes a pushing force for a pushing operation for transport or a pulling force for a pulling operation for transport, thereby allowing the transport container 10 to be pushed or pulled in the Y-axis direction. Therefore, by using a drive device (not shown) capable of applying a sufficient pushing force or pulling force to the transport container 10 in the Y-axis direction, it is possible to smoothly and efficiently push or pull the transport container 10 onto, for example, a rack, shelf, or the like.

[0021] Specifically, the transport container 10 has a rectangular bottom surface 11 (in this case, a rectangular synthetic resin plate) made of synthetic resin and a peripheral side wall 12 (in this case, a rectangular synthetic resin plate) rising from the bottom surface 11. The peripheral side wall 12 includes a front-side one-side side wall 13 and a rear-side one-side side wall 14 that face each other, and also includes a front-side other-side side wall 15 and a rear-side other-side side wall 16 that face each other. The bottom surface 11 and the peripheral side wall 12 may be, for example, square in shape. Banks 17 that support the peripheral side wall 12 (in this case, the front-side other-side side wall 15 and the rear-side other-side side wall 16) are integrally formed on the bottom surface 11 (in this case, both ends of the long sides of the bottom surface 11). The banks 17 may be formed on either the side or top surface of the bottom surface 11. In addition, embankments may be provided around the entire periphery of the bottom surface 11, and these embankments may be arranged to support the front side one side wall 13, the rear side one side wall 14, the front other side side wall 15, and the rear other side side wall 16, respectively.

[0022] The front one side wall portion 13 and the rear one side side wall portion 14 are positioned so that both ends of the front other side wall portion 15 and both ends of the rear other side side wall portion 16 are in contact with, respectively, both ends of the front other side side wall portion 15 and the rear other side side wall portion 16, and the front one side side wall portion 13 is arranged near the long side of the bottom portion 11, the rear one side side wall portion 14 is arranged near the long side of the bottom portion 11, the front other side side wall portion 15 is arranged near the bank portion 17, and further the rear other side side wall portion 16 is arranged near the bank portion 17 so that they can swing between an upright state and a folded state.

[0023] In this case, when the front one side wall 13, the rear one side wall 14, the front other side wall 15, and the rear other side wall 16 are in an upright state, they form a storage space for storing contents (not shown), but when they are folded, they do not form a storage space. Furthermore, when a pushing force or a pulling force is applied in the X-axis direction or the Y-axis direction near the bottom surface 11 (or the bank portions 17 and the bottom surface 11), the shape of the transport container 10 is less likely to become deformed than when a pushing force or a pulling force is applied in the X-axis direction or the Y-axis direction of the peripheral side wall portions 12, because the bottom surface 11 (or the bank portions 17 and the bottom surface 11) is integral, and the transport container 10 is less likely to have a problem with the space for storing contents. In contrast, when the peripheral side wall 12 is configured to rise from the vicinity of the bottom surface 11, if an inadvertent pushing force or pulling force is applied to the peripheral side wall 12 in the X-axis or Y-axis direction, the inadvertent pushing force or pulling force is applied to one or more of the front one side wall 13, the rear one side wall 14, the front other side wall 15, and the rear other side wall 16, which is likely to deform the shape of the transport container 10. As described above, when a pushing force or pulling force is applied to the peripheral side wall 12 in the X-axis or Y-axis direction, problems are more likely to occur in the storage space of the transport container 10 than when a pushing force or pulling force is applied in the X-axis or Y-axis direction near the bottom surface 11 or near the bank portion 17. Therefore, it is preferable that the engagement portion 18 to which a pushing force or pulling force is applied be disposed near the bottom surface 11 or near the bank portion 17. Furthermore, if the surrounding side wall portion 12 and the bottom portion 11 (or the bank portion 17 and the bottom portion 11) are integrated and highly rigid in the upright state, even if inadvertent pressing or pulling force is applied, the shape of the transport container 10 will not be deformed and no problems will arise.

[0024] The front one side wall portion 13 and the rear one side side wall portion 14 are in a leading and trailing relationship with respect to the front other side wall portion 15 and the rear other side wall portion 16. That is, as shown in Figures 5 and 8, the front one side side wall portion 13 and the rear one side side wall portion 14 are first folded onto the bottom surface portion 11 (leading), and then the front other side side wall portion 15 and the rear other side side wall portion 16 are folded onto the folded front one side side wall portion 13 and the rear one side side wall portion 14 (rear).

[0025] When the bottom surface portion 11 and the surrounding side wall portion 12 are folded in this manner, the storage space for the transport container 10 is eliminated, reducing the volume occupied by the transport container 10. As a result, a large number of folded transport containers 10 can be loaded onto the loading platform of a transport truck (not shown) or the like, and a large number of transport containers 10 can be transported in large quantities.

[0026] In addition, bank portions 17 supporting the front other-side side wall portion 15 and the rear other-side side wall portion 16 are disposed on both ends of the long sides of the bottom surface portion 11, and the bank portions 17 are provided with engagement portions 18 having openings 18A on the lower side that can engage with the tip end portion L2 of the drive shaft L1 shown in Figures 9 to 11. Multiple (two) engagement portions 18 with openings 18A are disposed in the direction along the short side (X-axis direction), but three or more may be disposed depending on the situation. The engagement portions 18 may continue above the bank portions 17 to the lower sides of the front other-side side wall portion 15 and the rear other-side side wall portion 16 depending on the situation. Additionally, an engagement space 19 having a long vertical dimension (dimension H0 shown in FIG. 3) is disposed below the engagement portion 18. The vertical dimension H0 of the engagement space 19 is a sufficiently long space allowing movement, allowing for unhindered movement. The engagement space 19 formed in the bank portion 17 has a boundary W0 (the end of the engagement space 19) extending upward (in the Z-axis direction) from the bottom surface of the bottom surface portion 11, and its dimension is H0. Similarly, the engagement space 19 has a boundary W1 (the end of the engagement space 19) extending in the direction along the other side of the bottom surface portion 11 (in the X-axis direction), and its dimension is P1. Because the horizontal dimension P1 of the engagement space 19 (dimension P1 shown in FIG. 10) is sufficiently long, there is sufficient space allowing for unhindered movement of the tip end L2 of the drive shaft L1 within the engagement space 19. Furthermore, when the dimension length H0 of the engagement space portion 19 is longer than the thickness of the bottom portion 11 (dimension length H1 shown in Figures 2 and 7) and is longer than half the thickness of the bank portion 17 (dimension length H2 shown in Figure 3) (dimension length H2 / 2 shown in Figure 7), when the tip portion L2 of the drive shaft L1 shown in Figures 9 to 11 moves within the engagement space portion 19, there is sufficient space to allow movement, so it can move without any problems.

[0027] 11, the engaging portion 18 to which the pressing or pulling force is applied has a wall portion 17A of the bank portion 17 and the outer wall portion 23 as part of its components, and is formed into a cylindrical shape with a bottom and a downward opening by a connecting rib 23D connecting the wall portion 17A and the outer wall portion 23, and ribs 20 and 21 (described later) surrounding the hooking space 23C. In this case, the hooking space 23C forms a large space with a depth P2 and an opening length P3. Furthermore, by providing the connecting rib 23D spanning the hooking space 23C, the mechanical strength of the outer wall portion 23 can be ensured. 11, and is composed of an arm 23A extending horizontally and an arm 23B extending vertically, etc., thereby forming an opening 18A of the engagement portion 18. When the outer wall 23 is composed of an L-shaped cross section, a configuration can be adopted in which the tip L2 of the drive shaft L1 serves as a hook portion on the inside of the outer wall 23 (i.e., on the wall 17A side), and a hooking space 23C capable of accommodating the tip L2 of the drive shaft L1 is formed. The cylindrical shape of the engagement portion 18 may be any shape that surrounds the hooking space 23C on all four sides, and does not necessarily have to have a continuous peripheral surface, such as a circular or rectangular shape. In this case, the cylindrical shape of the engagement portion 18 does not necessarily have to have a bottom, or may have other configurations. The L-shaped cross-sectional wall portion of the outer wall portion 23 may have a curved cross-sectional wall portion or may have other configurations. It is also desirable to form a connecting rib 21 that extends horizontally across the tip end L2 of the drive shaft L1. Specifically, forming the connecting rib 21 on the left and right sides (outside and inside along the arrow direction K1) of the depth P2 of the engagement portion 18 can suppress deformation of the outer wall portion 23. When forming connecting ribs on the outside and inside of the engagement portion 18 along the arrow direction K1, ribs may be arranged to connect the wall portion 17A and the arm portion 23A and arm portion 23B. Also, a rib may be provided to connect the wall portion 17A and the arm portion 23A, and further, a rib may be provided to connect the arm portion 23A and the arm portion 23B.

[0028] In this embodiment, the drive shaft L1 constituting the drive-type conveying engaging means can be driven as follows. That is, when the drive shaft L1 moves from the outside to the inside, the drive shaft L1 (with its tip end L2 curved into a hook shape) is arranged as shown in Figures 9 to 11. The drive shaft L1 is connected to a driving means (not shown) so that the drive shaft L1 can reciprocate in the Y-axis direction (and, if necessary, the X-axis direction) and also in the Z-axis direction. The tip end L2 of the drive shaft L1 moves from the outside to the inside along the direction of the arrow K1, and can rise upward along the direction of the arrow K2 at a predetermined position (a position a predetermined distance away from the wall portion 17A) and stop. Furthermore, the tip L2 of the drive shaft L1 moves from the position where it stops above toward the inside along the direction of the arrow K1 (contacting the wall portion 17A) to engage with the engagement portion 18, and in this state, the tip L2 of the drive shaft L1 moves from the outside toward the inside along the direction of the arrow K1, thereby pushing the other side wall portion 15 on the front side in the direction of the arrow K1. On the other hand, when the tip end L2 of the drive shaft L1 is engaged with the engaging portion 18 at a position where it is stopped at the top, it can be moved in the opposite direction of the arrow K1 (away from the wall portion 17A and into contact with the outer wall portion 23), thereby performing the pulling operation in the opposite direction of the arrow K1. Note that the components constituting the drive-type conveying engaging means may be other than the above-mentioned components (tip end L2, drive shaft L1, and drive unit). The hook portion of the tip end L2 only needs to engage with the opening of the engaging portion, and the tip end L2 may have a shape other than a curved hook.

[0029] In this case, the tip end L2 of the drive shaft L1 moves downward from above in the direction opposite to the arrow direction K2 at a predetermined position (a position a predetermined distance away from the wall portion 17A), and can also move from the inside to the outside in the direction opposite to the arrow direction K1. As a result, the tip end L2 of the drive shaft L1 moves away from the opening 18A, and can be released from the engaging portion 18. Note that if the tip end L2 of the drive shaft L1 has an upward hook shape as shown in FIG. 9, the engaging portion 18 has an opening 18A on the lower side, and is hooked from below. In this case, the engaging portion 18 has an opening 18A facing downward, but the structure prevents liquids such as dirt or water from accumulating within the engaging portion 18, thereby improving convenience. The number of engaging portions that engage with the tip of the drive shaft may be three or more. Furthermore, the engaging portion 18 may have openings facing both upward and downward, and may have a form different from that of the embodiment. A protective member or the like may be attached to the tip L2 of the drive shaft L1 to make it easier to push and pull the wall portion 17A, thereby facilitating pushing and pulling operations.

[0030] Ribs 20 extending horizontally (in the X-axis direction) are provided at positions outside the wall portion 17A, and the ribs 20 have a plurality of peripheral ribs 20A protruding downward. Ribs 21 connected to the ribs 20 have peripheral ribs 21A that extend downward a predetermined distance and connecting ribs 21B that extend horizontally (in the X-axis direction) at the lower ends of the peripheral ribs 21A, and the left and right peripheral ribs 21A are connected to the connecting ribs 21B at their lower ends. The rib 20 includes a peripheral rib 22A extending downward (in the Z-axis direction) by a predetermined distance from its inner position, a rib 22C extending downward (in the Z-axis direction) by a predetermined distance (of approximately the same length) from its outer position, and a connecting rib 22B extending horizontally (in the X-axis direction) near the center of the peripheral rib 22A and the center of the rib 22C. The interconnection of the peripheral rib 22A, connecting rib 22B, and rib 22C ensures mechanical strength. The mechanical strength is ensured by carefully determining measured values ​​such as bending strength. The connecting rib 21B and the left and right connecting ribs 22B may be formed above the opening 18A of the engagement portion 18, or may be formed above or below the opening 18A. Mechanical strength may also be ensured by forming a new rib extending vertically (in the Z-axis direction) along the extension line 21C of the left and right peripheral ribs 21A. The left and right connecting ribs 22B may be formed on the left and right extensions of the connecting rib 21B, or may be formed below or above the connecting rib 21B.

[0031] The ribs 21 and 22 are connected to the outer wall portion 23 that protrudes from the front other side wall portion 15, and serve to ensure the mechanical strength of the outer wall portion 23 and the front other side wall portion 15. If the tip portion L2 of the drive shaft L1 is hook-shaped, multiple (two) hooking spaces 23C that can accommodate the tip portion L2 of the drive shaft L1 are provided in the horizontal direction, and the peripheral rib 21A, connecting rib 21B, peripheral rib 22A, connecting rib 22B, and rib 22C are connected to each other to ensure mechanical strength. The shapes of the rib 20, peripheral rib 21A, connecting rib 21B, peripheral rib 22A, connecting rib 22B, and rib 22C may be modified as appropriate depending on the situation. The peripheral rib 21A and the connecting rib 21B are in an inverted U shape, but may be other shapes. The downward length (in the Z-axis direction) of the peripheral rib 21A is set shorter than the downward length (in the Z-axis direction) of the peripheral rib 22A, so the space within the engagement space 19 is larger than the space within the hooking space 23C. At the lower end of the other front side wall portion 15 (peripheral side wall portion 12), a plurality of shafts R1 (three are shown in FIG. 10 ) are horizontally arranged to swing the other front side wall portion 15 (peripheral side wall portion 12) between a state where it stands up from the bank portion 17 and a state where it is folded against the bank portion 17. A swing support portion is provided to swingably connect the central shafts R1 shown in FIG. 10 , and the swing support portion is composed of left and right peripheral ribs 21A and a connecting rib 21B connecting the lower ends of the left and right peripheral ribs 21A. The left and right shafts R1 shown in FIG. 10 also have a similar configuration. That is, the swing support portion is composed of an inner peripheral rib 22A, an outer rib 22C, and a connecting rib 22B connecting the ribs 22A and 22C. Multiple shaft portions R1 (two or less or four or more) may be provided, and ribs (oscillating support portions) as shown in Figure 10 may be provided around all of the shaft portions R1, or may be deleted as necessary.

[0032] In particular, when the rib 20 extending in the horizontal direction (X-axis direction), the rib 21 extending in the horizontal direction (X-axis direction) and the vertical direction (Z-axis direction), and the rib 22 extending in the horizontal direction (X-axis direction) and the vertical direction (Z-axis direction) are interconnected to surround the engaging portion 18, etc., the mechanical strength may be sufficient. If the mechanical strength of the engaging portion 18, etc. is sufficient, a structure without the rib 21, etc. may be adopted. On the other hand, if the mechanical strength of the engaging portion 18, etc. is insufficient, a structure in which a peripheral rib is additionally formed at the installation position 25 (shown by imaginary lines) may be adopted. Note that whether or not to adopt a structure with the rib 21 and whether or not to adopt a structure in which a vertical rib is formed at the installation position 25 can be arbitrarily determined taking into account the mechanical strength of the transport container 10. For example, the number of hooking spaces may be three or more, and the connecting ribs and horizontal ribs may have different configurations. When pushing or pulling with the tip L2 of the drive shaft L1, a rib may be provided at the middle position of the hooking space 23C to prevent the shape of the outer wall 23 and the space 15 between the surrounding side wall 15 from changing, thereby preventing deformation by the tip L2 of the drive shaft L1.

[0033] In this embodiment, the engaging portion 18 is disposed near the bank portion 17, so the front one side wall portion 13, the rear one side wall portion 14, the front other side wall portion 15, and the rear other side wall portion 16 are not subject to pulling or pushing forces, and the transport container 10 has sufficient mechanical strength. In another embodiment, the front one side wall portion 13, the rear one side wall portion 14, the front other side wall portion 15, and the rear other side wall portion 16 may be disposed on the peripheral side edges of the bottom portion 11.

[0034] The engagement portion of the modified example may be formed not only near the bottom surface 11 of the peripheral side wall 12 but also at an upper or intermediate position of the peripheral side wall 12. The engagement portion of the modified example may have an upwardly opening cylindrical shape or other shapes. For example, as shown in FIGS. 12 and 13 , an engagement portion 28 (a space having a depth P4) may be provided at a lower position of the side wall 27. In this case, an upwardly opening opening 28A may be formed in the engagement portion 28, and the peripheral wall 28B may have a cylindrical shape as a component. In particular, in the case of the engagement portion of the upwardly opening opening 28A, the tip end L2 of the drive shaft L1 has a downwardly facing hook shape, unlike the shape shown in FIG. 9, and is shaped to hook from above. The engagement portion may be provided on either the front side wall 13 or the rear side wall 14. The engagement portion may be provided on both the front side wall portion 13 and the rear side wall portion 14, or on either the front side wall portion 13 or the rear side wall portion 14. As described above, an engagement space 19 extending in the vertical direction (Z-axis direction) and horizontal direction (X-axis direction) is provided below the engagement portion 18 (see FIGS. 1 to 3, 5 to 7, 9, and 10). Furthermore, an upper space 15A extending in the vertical direction (Z-axis direction) and horizontal direction (X-axis direction) is provided above the engagement portion 18, as shown in FIGS. 1, 3, 5, 8 to 11. In this case, the upper space 15A is provided on the bank portion 17 side of the front other-side side wall 15 (peripheral side wall 12). Furthermore, an upper space 16A having a similar configuration to the upper space 15A is provided on the bank portion 17 side of the rear other-side side wall 16 (peripheral side wall 12). Also, upper space 15A is formed as a U-shaped recess 15U (having an opening on the outside in the Y-axis direction) in front other side wall 15 (peripheral side wall 12) disposed above hooking space 23C in opening 18A (see FIG. 11). When upper space 15A shown in FIG. 11 forms recess 15U, the shape of recess 15U makes front other side wall 15 lighter than a configuration having a uniform thickness, and peripheral wall 15B surrounding recess 15U functions as a rib, ensuring the strength of bank portion 17 of front other side wall 15. 9 and 11, a part of the inside of the hooking space 23C forms the inner abutment point 17B, and a part of the lower part 23B of the hooking space 23C forms the outer abutment point 23E. When the above-described driven type transfer engaging means (L1, L2) linearly reciprocates between the outside and the inside in the direction along one side of the bottom surface portion 11 (Y-axis direction), the driven type transfer engaging means (L1, L2) has a tip end L2 that bends upward, so that the inner abutment surface L2A of the tip end L2 can abut against the inner abutment point 17B, and the outer abutment surface L2B of the tip end L2 can abut against the outer abutment point 23E. Since the engagement space 19 has the aforementioned movement allowance space, when the tip L2 is disengaged from the hooking space 23C, the driven transport engagement means (L1, L2) can move smoothly in a straight line from the outside in the direction along one side (Y-axis direction) to the lower part of the hooking space 23C in the direction along one side (Y-axis direction).

[0035] 12 and 13, an L-shaped cross-sectional wall portion 29 having a configuration similar to the L-shaped cross-sectional wall portion constituting the engagement portion 28 may be employed above the side wall portion 27. That is, a configuration may be employed in which the L-shaped cross-sectional wall portion 29 that opens downward and extends horizontally and outward is disposed above the side wall portion 27, and a rib is provided to connect the L-shaped cross-sectional wall portion 29 and the side wall portion 27.

[0036] By providing ribs on the side wall portion 27 and the L-shaped cross-section wall portion 29 in this manner, the mechanical strength of the side wall portion 27 and the L-shaped cross-section wall portion 29 is increased. As a result, the L-shaped cross-section wall portion 29 can function to prevent the side wall portion 27 from protruding depending on the situation. The peripheral rib may be configured to divide the space between the L-shaped cross-section wall portion 29 and the side wall portion 27 into three by providing, for example, two vertical ribs. In addition to this configuration, if three peripheral ribs are provided, the space between the L-shaped cross-section wall portion 29 and the side wall portion 27 will be divided into four by the three peripheral ribs. Note that the L-shaped cross-section wall portion 29 and the side wall portion 27 may be used to form the engagement portion 18 around the L-shaped cross-section wall portion 29. Furthermore, the side wall portion 27 may be provided with a mechanism for preventing die tipping (die tipping prevention touch hole).

[0037] 11, the outer wall 23 has an L-shaped cross section and is composed of an arm 23A extending horizontally and an arm 23B extending vertically (a hooking space 23C having an opening width P3 and a depth P2), thereby forming an opening 18A of the engagement part 18. When the outer wall 23 has an L-shaped cross section, a configuration can be adopted in which the tip end L2 of the drive shaft L1 becomes a hook portion on the inside of the outer wall 23 (i.e., on the side of the other side wall 15 on the near side), and the hooking space 23C capable of accommodating the tip end L2 of the drive shaft L1 is formed.

[0038] The following configurations may also be adopted. For example, the thickness of the outer wall 23 may be thicker than that of the wall 17A. For example, the thickness of the outer wall 23 may be partially thicker than that of the wall 17A. Furthermore, the outer wall 23 and the wall 17A may be provided with partial slopes, thereby making the opening length P3 partially different. It is desirable to increase the depth so that the tip end L2 does not get caught on the reinforcing rib 23D or the like. For this purpose, low reinforcing ribs (horizontal ribs or vertical ribs) may be provided on the surfaces of the outer wall 23 and the wall 17A (or the inner wall or other wall portions provided as necessary).

[0039] The connecting ribs between the outer wall portion 23 and the wall portion 17A may be replaced with lower ribs (not shown). Also, guide slopes may be provided at the tips of the ribs (horizontal ribs or vertical ribs). Reinforcing ribs 23D (horizontal ribs or vertical ribs) may be provided on the inside of the outer wall portion 23 and the wall portion 17A to connect the outer wall portion 23 and the wall portion 17A, or a configuration in which the outer wall portion 23 and the wall portion 17A are not connected may be adopted. To facilitate insertion of the tip end L2 of the drive shaft L1 into the opening 18A of the engagement portion 18, the opening 18A (dimensions of length P1 and opening width P3) of the engagement portion 18 may be made as large as possible, or a guide inclined surface may be provided near the opening 18A. A vertical surface may be formed on a low vertical rib (reinforcement rib) in the space of the engagement portion 18 to increase the contact area with the tip end L2 of the drive shaft L1. Since the length of the tip end L2 of the drive shaft L1 is set shorter than the depth P2 of the hooking space 23C, it is desirable that the tip end L2 does not come into contact with (be caught on) the connecting rib 23D of the hooking space 23C.

[0040] By forming a vertical surface (along the Z-axis direction) on the surface of the outer wall 23, the depth side can be narrower than the size of the opening, thereby ensuring the mechanical strength of the outer wall 23. Large curved surfaces may be formed on the inside of the outer wall 23 and the wall 17A. A recess may be formed on the upper surface of the outer wall 23, or the recess surface may be linear. Multiple ribs may be provided between the outer wall 23 and the wall 17A. Multiple ribs may also be provided between the periphery of the wall 17A and the outer wall 23. For example, by providing multiple (multiple) ribs across the hooking space 23C, the mechanical strength of the outer wall 23 can be ensured. Ribs may be added to connect the outer wall 23 to the connecting rib 23D and the wall 17A to the connecting rib 23D.

[0041] The size of the space within the outer wall 23 may be larger than the size of the space within the L-shaped cross-section wall 29. The outer wall 23 and the wall 17A (the other front-side side wall 15) may be provided with a mechanism for preventing die tipping (die tipping prevention touch hole). The outer and inner surfaces of the outer wall 23 and the wall 17A (the other front-side side wall 15) may be flat without any irregularities, or may be provided with irregularities as necessary. The outer wall surface of the outer wall 23 may be formed vertically, with the wall being thicker from the opening edge toward the depth. The angle between the opening edge of the outer wall 23 and the inner surface may be formed with a large R-shape. A bottom wall may be provided at the depth opposite the opening in the hooking space, and connecting ribs (multiple as necessary) may be provided on the outer wall, side wall, bottom wall, and side wall.

[0042] According to the above-described embodiment, the transport container 10 of this embodiment includes a resin bottom portion 11 that is rectangular in plan view, a resin peripheral side wall portion 12 that rises from the bottom portion 11, and a bank portion 17 that supports the peripheral side wall portion 12. A cylindrical engaging portion 18 having a downward opening 18A that can engage with the tip end L2 of the drive shaft L1 is disposed on the bank portion 17, the peripheral side wall portion 12, or the bottom portion 11. Therefore, when the tip end L2 of the drive shaft L1 engages with the opening 18A of the engaging portion 18, the tip end L2 of the drive shaft L1 moves in the direction of the arrow K1 and in the opposite direction, thereby enabling smoother and more efficient pushing and pulling of the transport container 10, for example, onto a rack or shelf, and pulling of the transport container 10 from the rack or shelf.

[0043] In the above embodiment, the ribs are arranged to surround multiple hooking spaces (multiple hooking spaces are arranged side by side horizontally and the ribs are arranged to surround multiple hooking spaces), so that the mechanical strength of the engagement portion can be ensured. A plurality of hooking spaces 23C capable of accommodating a plurality of tip portions L2 (hook portions) of a plurality of drive shafts L1 (drive-type transport engagement means) are arranged around the engagement portion 18, and ribs 20, 21, and 22 are arranged to surround the plurality of hooking spaces 23C, thereby enabling stable pushing operations for moving, such as pushing onto a rack or shelf, and pulling from a rack or shelf.

[0044] 1 to 8, the transport container 10 described above comprises a resin bottom portion 11 that is rectangular in plan view and has one and other sides that face each other, and a resin peripheral side wall portion 12 that is supported by bank portions 17 that are integrally formed along the one and other sides of the bottom portion 11 and that is swingably connected to the bank portions. The peripheral side wall portion 12 comprises one-side side wall portions 13 and 14 that face each other, and other-side side wall portions 15 and 16 that are adjacent to the one-side side wall portions 13 and 14, respectively, and that face each other. The side walls 13, 14 on one side and the side walls 15, 16 on the other side are in the relationship of a front tatami mat and a rear tatami mat, and the thickness of the bank portion 17 on the side walls 15, 16 on the other side of the rear tatami mat in the vertical direction is made thicker than the thickness of the bank portion 17 on the side walls 13, 14 on one side of the front tatami mat in the vertical direction (Z-axis direction), so that the side walls 13, 14 on one side of the front tatami mat and the side walls 15, 16 on the other side of the rear tatami mat can swing between a state in which they stand up from the bank portion 17 and a state in which they are folded down.

[0045] 10, the transport container 10 includes a central shaft R1 provided at the center of the lower end of the other-side side wall 15 in the direction along the other side (X-axis direction), and two side shafts R1 disposed in the direction along the other side (X-axis direction) on both sides of the central shaft R1 at the lower end of the other-side side wall 15. As shown in FIGS. 3 and 7, an engagement space 19 is formed in the bank portion 17 so that its vertical length (H0) is longer than half (H2 / 2) of the length (H2) between the upper and lower ends of the bank portion 17 of the other-side side wall portions 15, 16, and an engagement portion 18 is connected to the engagement space 19. In addition, the engagement portion 18 has a hooking space 23C that opens downward and is connected to the engagement space 19, and is arranged side by side with a gap therebetween in the direction along the other side (X-axis direction). In order to form the hooking space 23C, as shown in Figure 9, the L-shaped cross-section wall portion 29 has a horizontal portion 23A extending from the inside to the outside in a direction along one side (Y-axis direction) and a lower portion 23B extending downward from the outer end of the horizontal portion 23A.

[0046] The engagement space 19 formed in the bank portion 17 has a vertical (Z-axis) dimension (H0) longer than half (H2 / 2) of the length (H2) between the upper and lower ends of the bank portion 17 on the other side wall 15. This effectively utilizes the bank portion 17, allowing the folding container 10 to be moved or stored smoothly and efficiently. That is, providing the engagement space 19 and the hooking space 23C in the bank portion 17 makes the transport and storage configuration compact. Furthermore, when the folding container 10 is moved or stored, the front other side wall 15 and the rear other side wall 16 are not subjected to pulling or pushing forces, allowing the transport container to be stably pushed or pulled in the direction along one side of the bottom portion 11 (Y-axis). As a result, the transport and storage of the transport container 10 can be performed smoothly and efficiently. Furthermore, by providing a rib 20 extending in the direction along the other side (X-axis direction), a central swinging receiving portion that swingably receives the central axis portion R1 adjacent to the rib 20, and side swinging receiving portions on both sides of the central swinging receiving portion that swingably receive the side axis portions R1, the mechanism for swinging the other side side wall portions 15, 16 between a state in which they are raised from the bank portion 17 and a state in which they are folded becomes compact. [Explanation of symbols]

[0047] 10, 30, 40 shipping containers 11, 31, 41 bottom part, 17 bank part 12, 32, 42 Peripheral side wall 13, 33, 43 Front side wall 14, 34, 44 Side wall on one side of the back 15, 35, 45 Other side wall on the front side 16, 36, 46 Other side wall at the rear 18, 28, 38, 48 Engagement part 18A opening, 19 engagement space 20, 21, 22 Ribs 21A Peripheral rib, 22A Peripheral rib 21B, 22B connecting rib 23 Outer wall; 23A 23B Arm (L-shaped cross-section wall) 23C Hooking space H0 dimension length H1 Thickness H2 Length (dimension length) H2 / 2 Half dimension length L1 Drive shaft (drive type conveying engagement means) L2 Hook portion (tip portion, drive type transport engagement means) 15A, 16A upper space 15U recess L2A Inner contact surface L2B Outer contact surface 23E Outer contact point 17B Inner contact point

Claims

1. a bottom surface portion made of resin and having a rectangular shape in a plan view and one side and another side facing each other; a bank portion integrally provided along one side and the other side of the bottom surface portion; a resin peripheral side wall portion supported by the bank portion and swingably connected to the bank portion; the peripheral side wall portion includes one-side side wall portions opposed to each other and other-side side wall portions adjacent to the one-side side wall portions and opposed to each other, The one-side side wall portion and the other-side side wall portion are in a relationship of a leading tatami mat and a trailing tatami mat, and the vertical thickness of the bank portion on the other-side side wall portion of the trailing tatami mat is formed thicker than the vertical thickness of the bank portion on the one-side side wall portion of the leading tatami mat, A folding container for transport in which one side wall of the leading tatami mat and the other side wall of the trailing tatami mat can be swung between a state in which they are raised from the bank and a state in which they are folded, a central shaft portion provided at a center of a lower end of the other-side side wall portion in a direction along the other side; and a pair of side shaft portions disposed on both sides of the central shaft portion at the lower end of the other-side side wall portion in a direction along the other side, The bank portion on the other side wall portion side is provided with an engagement space portion formed so that the vertical dimension length is longer than half the dimension between the upper end and the lower end of the bank portion of the other side wall portion, The engagement portion connected to the engagement space portion is a hooking space portion that is open downward and connected to the engagement space portion and is arranged in parallel with the other side at intervals; a wall portion having an L-shaped cross section, the wall portion including a horizontal portion extending from the inside to the outside in a direction along the one side and a lower portion extending downward from an outer end of the horizontal portion in order to form the hooking space portion; a rib extending in a direction along the other side; a central swing receiving portion adjacent to the rib and configured to swingably receive the central shaft portion; and swing receiving portions on both sides of the central swing receiving portion that swingably receive the side shaft portions, respectively. a part of the lower portion in the hooking space forms an outer abutment point, and a part of the hooking space opposite to the outer abutment point forms an inner abutment point; A transport container characterized in that the inner abutment surface of the upwardly bending hook portion of the drive-type transport engagement means, which moves back and forth linearly between the outside and the inside in a direction along one side of the bottom surface portion, is capable of abutting against the inner abutment point within the hooking space, and the outer abutment surface of the hook portion is capable of abutting against the outer abutment point within the hooking space.

2. 2. The transport container according to claim 1, wherein the engagement space portion has a movement-permitting space in which the drive-type transport engagement means can move linearly along the direction along the one side from the outside in the direction along the one side to the lower part of the hooking space portion when the hook portion is disengaged from the hooking space portion.

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