Transport vehicle

Abstract

We provide a transport vehicle that holds bags separately from the cargo box. [Solution] The transport vehicle C1 comprises a transport vehicle body CM and a bag CB. The transport vehicle body has a cargo box with an upper opening 101 and a locking part. The locking part extends in the Z direction from the cargo box. The bag has a bag body 10 and a downward-opening pocket 20 provided in the bag body. The transport vehicle has the lower edge 21 of the pocket supported by the cargo box with the locking part inserted into the pocket.

Description

Technical Field

[0001] The present invention relates to a transport vehicle.

Background Art

[0002] The following Patent Document 1 describes a conventional transport vehicle. This transport vehicle includes a base, a handle, a first holding fitting, and a second holding fitting. The handle is provided at the front end of the base. The first holding fitting is a hook provided on the handle. The second holding fitting extends upward from the rear end of the base. With the bag placed on the base, the first holding fitting is hooked on the front pocket of the downward opening of the bag, and the second holding fitting is hooked on the front pocket of the downward opening of the bag.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The conventional transport vehicle has a configuration for holding a bag on the base. In other words, in the conventional transport vehicle, the bag functions as a loading box.

[0005] The present invention provides a transport vehicle that holds a bag separately from the loading box.

Means for Solving the Problems

[0006] The transport vehicle according to one aspect of the present invention includes a transport vehicle body and a bag. The transport vehicle body has a loading box having an upper opening and a locking portion. The locking portion extends above the loading box. The bag has a bag body and a pocket with a downward opening provided in the bag body. With the locking portion inserted into the pocket, the lower edge of the pocket is supported by the loading box. [Effects of the Invention]

[0007] In the case of a transport vehicle according to one aspect of the present invention, the lower edge of the pocket is supported by the cargo box while the locking part is inserted into the pocket, so the bag can be held separately from the cargo box. [Brief explanation of the drawing]

[0008] [Figure 1A] This is a schematic perspective view of a transport vehicle according to Embodiment 1 of the present invention. [Figure 1B] This is a schematic side view of the transport vehicle of Example 1. [Figure 1C] This is a schematic, partially enlarged perspective view of the transport vehicle of Example 1. [Figure 2A] This is a schematic perspective view of the transport vehicle body of Example 1. [Figure 2B] This is a schematic side view of the transport vehicle body of Example 1. [Figure 2C] This is a schematic front view of the transport vehicle body of Example 1. [Figure 2D] This is a schematic rear view of the transport vehicle body of the transport vehicle in Example 1. [Figure 2E] This is a schematic bottom view of the transport vehicle body of Example 1. [Figure 3A] This is a schematic perspective view of the bag on the transport vehicle in Example 1. [Figure 3B] This is a schematic side view of the bag of the transport vehicle in Example 1. [Figure 4] This is a schematic perspective view of a modified design example of the transport vehicle body of Example 1, in which the liner and the extended portion of the locking part of the transport vehicle body are omitted from the illustration. [Figure 5A] This is a schematic perspective view of a transport vehicle according to Embodiment 2 of the present invention, showing the bag separated from the transport vehicle body. [Figure 5B] This is a schematic perspective view of a design modification example of a transport vehicle according to Embodiment 2 of the present invention, showing the bag separated from the transport vehicle body. [Figure 6]This is a schematic perspective view of a transport vehicle according to Embodiment 3 of the present invention, showing the bag separated from the transport vehicle body. [Modes for carrying out the invention]

[0009] The following describes several embodiments of the present invention, including Embodiments 1, 2, and 3 and their design modifications. It should be noted that the components of the embodiments and design modifications described below can be combined with each other, as long as they do not contradict each other. Furthermore, the materials, shapes, dimensions, numbers, and arrangements of the components in each embodiment and design modification described below are merely examples, and can be arbitrarily modified as long as similar functions can be achieved. [Examples]

[0010] The following describes several embodiments of the present invention, including Embodiment 1 and its design modifications, with reference to Figures 1A to 3B. Figures 1A to 3B show the transport vehicle C1 of Embodiment 1. Figure 4 shows a design modification example of the transport vehicle C1 of Embodiment 1.

[0011] Figures 1A, 1B, 2A-3B, and 4 show the Z-Z' direction (first direction). This includes the Z direction (the other direction of the first direction) and the Z' direction (one of the directions of the first direction). Figures 1A, 1B, 2A, 2B, 2E, 3A, 3B, and 4 show the Y-Y' direction (second direction). The Y-Y' direction is approximately orthogonal to the Z-Z' direction and includes the Y direction (one of the directions of the second direction) and the Y' direction (the other of the directions of the second direction). Figures 1A, 2A, 2C-2E, 3A, and 4 show the X-X' direction (third direction). The X-X' direction is approximately orthogonal to the Z-Z' direction and the Y-Y' direction and includes the X direction (one of the directions of the third direction) and the X' direction (the other of the directions of the third direction).

[0012] The transporter C1 includes a transporter body CM. The transporter body CM has a loading box with an upper opening 101 (the opening on the Z-direction side). The loading box has a flexible box-shaped liner 100 with an upper opening 101. Note that the Z-Z' direction is the height direction of the loading box, that is, the liner 100.

[0013] The liner 100 has a bottom 110, a first wall portion 120a, a second wall portion 120b, a third wall portion 120c, a fourth wall portion 120d, a first corner portion 130a, a second corner portion 130b, a third corner portion 130c, and a fourth corner portion 130d.

[0014] The bottom 110 is a flexible sheet that is substantially square or substantially rectangular in plan view (when viewed from the Z-direction side), and is made of polyester, polyvinyl chloride, nylon, cotton, or the like. The bottom 110 has a first side on the Y-direction side, a second side on the Y'-direction side, a third side on the X-direction side, and a third side on the X'-direction side.

[0015] The first wall portion 120a is a flexible sheet that is substantially square or substantially rectangular when viewed from the Y-direction side, and is made of polyester, polyvinyl chloride, nylon, cotton, or the like. The first wall portion 120a extends in the Z-direction from the first side of the bottom 110. The first wall portion 120a has a first end portion on the X-direction side, a second end portion on the X'-direction side, an upper end portion on the Z-direction side, and a lower end portion on the Z'-direction side. The lower end portion of the first wall portion 120a is connected or joined to the first side of the bottom 110.

[0016] The second wall portion 120b is a flexible sheet that is substantially square or substantially rectangular when viewed from the Y'-direction side, and is made of polyester, polyvinyl chloride, nylon, cotton, or the like. The second wall portion 120b extends in the Z-direction from the second side of the bottom 110 and is opposed to the first wall portion 120a in the Y-Y' direction. The second wall portion 120b has a first end portion on the X-direction side, a second end portion on the X'-direction side, an upper end portion on the Z-direction side, and a lower end portion on the Z'-direction side. The lower end portion of the second wall portion 120b is connected or joined to the second side of the bottom 110.

[0017] The third wall portion 120c is a flexible sheet that is approximately square or rectangular in shape when viewed from the X direction, and is made of polyester, polyvinyl chloride, nylon, or cotton. The third wall portion 120c extends in the Z direction from the first side of the bottom portion 110. The third wall portion 120c has a first end on the Y direction side, a second end on the Y' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The first end of the third wall portion 120c and the first end of the first wall portion 120a abut to form the first corner portion 130a. The first end of the third wall portion 120c is connected to or joined to the first end of the first wall portion 120a. The second end of the third wall portion 120c and the first end of the second wall portion 120b abut to form the third corner portion 130c. The second end of the third wall portion 120c is connected to or joined to the first end of the second wall portion 120b. The lower end of the third wall portion 120c is connected to or joined to the third side of the bottom portion 110.

[0018] The fourth wall portion 120d is a flexible sheet that is approximately square or rectangular in shape when viewed from the X' direction, and is made of polyester, polyvinyl chloride, nylon, or cotton. The fourth wall portion 120d extends in the Z direction from the fourth side of the bottom portion 110 and faces the third wall portion 120c in the X-X' direction. The fourth wall portion 120d has a first end on the Y direction side, a second end on the Y' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The first end of the fourth wall portion 120d and the second end of the first wall portion 120a abut to form the second corner portion 130b. The first end of the fourth wall portion 120d is connected to or joined to the second end of the first wall portion 120a. The second end of the fourth wall portion 120d and the second end of the second wall portion 120b abut to form the fourth corner portion 130d. The second end of the fourth wall portion 120d is connected to or joined to the second end of the second wall portion 120b. The lower end of the fourth wall portion 120d is connected to or joined to the fourth side of the bottom portion 110.

[0019] The space partitioned by the bottom 110, the first wall 120a, the second wall 120b, the third wall 120c, and the fourth wall 120d becomes the accommodating space for the liner 100.

[0020] The dimensions in the Z-Z' direction of the first wall section 120a, the second wall section 120b, the third wall section 120c, and the fourth wall section 120d may be approximately the same (see Figures 1A to 2E), or the dimensions in the Z-Z' direction of one or two of the first wall section 120a, the second wall section 120b, the third wall section 120c, and the fourth wall section 120d may be approximately the same, and the dimensions in the Z-Z' direction of the remaining two or one wall section may be approximately the same, but the dimensions in the Z-Z' direction of the remaining two or one wall section may differ from the dimensions in the Z-Z' direction of one or two wall sections (not shown), or the dimensions in the Z-Z' direction of all four wall sections may differ (not shown).

[0021] The transport vehicle body CM further comprises a first support column 200a, a second support column 200b, a third support column 200c, and a fourth support column 200d. The first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d are made of pipes or rods extending in the Z-Z' direction. The first support column 200a is positioned outward relative to the first corner 130a of the liner 100. The second support column 200b is positioned outward relative to the second corner 130b of the liner 100. The third support column 200c is positioned outward relative to the third corner 130c of the liner 100. The fourth support column 200d is positioned outward relative to the fourth corner 130d of the liner 100. Here, the side of the liner 100 that faces the accommodating space, with the first corner 130a, second corner 130b, third corner 130c, and fourth corner 130d of the liner 100 as the boundary, is referred to as the "inside," and the opposite side as the "outside."

[0022] The transport vehicle body CM further comprises the following configurations: (1), (2), or (3).

[0023] (1) The transport vehicle body CM further comprises a first telescopic frame 300a, a second telescopic frame 300b, and at least one connecting section 400.

[0024] The first telescopic frame 300a is positioned between the first support column 200a and the third support column 200c and has a configuration that allows it to extend and retract in the Y-Y' direction. The first telescopic frame 300a includes, for example, at least one first X-shaped frame 310a, a first rotating piece 320a, and a second rotating piece 330a. The second telescopic frame 300b is positioned between the third support column 200c and the fourth support column 200d and has a configuration that allows it to extend and retract in the Y-Y' direction. The second telescopic frame 300b includes, for example, at least one second X-shaped frame 310b, a first rotating piece 320a, and a second rotating piece 330a.

[0025] When there is at least one first X-shaped frame 310a and at least one second X-shaped frame 310b (see Figures 1A to 2B), one first X-shaped frame 310a has a first part 311a and a second part 312a, and one second X-shaped frame 310b has a first part 311b and a second part 312b.

[0026] The first X-shaped frame 310a has two parts, the first part 311a and the second part 312a, which are poles or rods that intersect each other in an X shape and are rotatably connected by an axis at their intersection. The first part 311a and the second part 312a each have an upper end and a lower end. The lower end of the first part 311a is rotatably connected to the lower end of the first support column 200a on the Z' direction side. The lower end of the second part 312a is rotatably connected to the lower end of the third support column 200c on the Z' direction side.

[0027] The first rotating piece 320a and the second rotating piece 330a are poles or rods, each having a first end on one side in the longitudinal direction and a second end on the other side in the longitudinal direction. The first end of the first rotating piece 320a is rotatably connected to the upper end of the second part 312a. The second end of the first rotating piece 320a is rotatably connected to the middle or upper end of the first support column 200a. The first end of the second rotating piece 330a is rotatably connected to the upper end of the first part 311a. The second end of the second rotating piece 330a is rotatably connected to the middle or upper end of the third support column 200c.

[0028] The first part 311b and the second part 312b of the second X-shaped frame 310b are poles or rods that intersect each other in an X-shape and are rotatably connected by an axis at their intersection. The first part 311b and the second part 312b each have an upper end and a lower end. The lower end of the first part 311b is rotatably connected to the lower end of the second support column 200b on the Z' direction side. The lower end of the second part 312b is rotatably connected to the lower end of the fourth support column 200d on the Z' direction side.

[0029] The first rotating piece 320b and the second rotating piece 330b are poles or rods, each having a first end on one side in the longitudinal direction and a second end on the other side in the longitudinal direction. The first end of the first rotating piece 320b is rotatably connected to the upper end of the second part 312b. The second end of the first rotating piece 320b is rotatably connected to the middle or upper end of the second support column 200b. The first end of the second rotating piece 330b is rotatably connected to the upper end of the first part 311b. The second end of the second rotating piece 330b is rotatably connected to the middle or upper end of the fourth support column 200d.

[0030] When there are multiple first X-shaped frames 310a and multiple second X-shaped frames 310b (not shown), each first X-shaped frame 310a has a first part 311a and a second part 312a, similar to one first X-shaped frame 310a, and each second X-shaped frame 310b has a first part 311b and a second part 312b, similar to one second X-shaped frame 310b.

[0031] Multiple first X-shaped frames 310a are arranged in a line in the Y-Y' direction. The multiple first X-shaped frames 310a include a first X-shaped frame 310a located furthest towards the Y direction and a first X-shaped frame 310a located furthest towards the Y' direction. The lower end of the first part 311a of the first X-shaped frame 310a located furthest towards the Y direction is rotatably connected to the lower end of the first support column 200a (see Figure 4), and the upper end of the second part 312a of the first X-shaped frame 310a is rotatably connected to the first end of the first rotating piece 320a (not shown). The lower end of the second part 312a of the first X-shaped frame 310a, which is located furthest towards the Y' direction, is rotatably connected to the lower end of the third support column 200c (see Figure 4), and the upper end of the first part 311a of the first X-shaped frame 310a is rotatably connected to the first end of the second rotating piece 330a (not shown).

[0032] Furthermore, each of the multiple first X-shaped frames 310a has at least one pair of adjacent first X-shaped frames 310a in the Y-Y' direction. In each of one or more pairs, the two adjacent first X-shaped frames 310a include one first X-shaped frame 310a on the Y-direction side and the other first X-shaped frame 310a on the Y' direction side. The upper end of the first part 311a of one first X-shaped frame 310a is rotatably connected to the upper end of the second part 312a of the other first X-shaped frame 310a (see Figure 4). The lower end of the first part 311a of one first X-shaped frame 310a is rotatably connected to the lower end of the second part 312a of the other first X-shaped frame 310a (see Figure 4).

[0033] Multiple second X-shaped frames 310b are arranged in a line in the Y-Y' direction. Each set of second X-shaped frames 310b includes a second X-shaped frame 310b located furthest towards the Y direction and a second X-shaped frame 310b located furthest towards the Y' direction. The lower end of the first part 311b of the second X-shaped frame 310b located furthest towards the Y direction is rotatably connected to the lower end of the second support column 200b (see Figure 4), and the upper end of the second part 312b of the same second X-shaped frame 310b is rotatably connected to the first end of the first rotating piece 320b (not shown). The lower end of the second part 312b of the second X-shaped frame 310b, which is located furthest to the Y' direction, is rotatably connected to the lower end of the fourth support column 200d (see Figure 4), and the upper end of the first part 311b of the second X-shaped frame 310b is rotatably connected to the first end of the second rotating piece 330b (not shown).

[0034] Furthermore, each set of two second X-shaped frames 310b has at least one pair of adjacent second X-shaped frames 310b in the Y-Y' direction. The pair of adjacent second X-shaped frames 310b includes one second X-shaped frame 310b on the Y-direction side and the other second X-shaped frame 310b on the Y' direction side. The upper end of the second part 312b of one second X-shaped frame 310b is rotatably connected to the upper end of the first part 311b of the other second X-shaped frame 310b (see Figure 4). The lower end of the second part 312b of one second X-shaped frame 310b is rotatably connected to the lower end of the first part 311b of the other second X-shaped frame 310b (see Figure 4).

[0035] The first part 311a and the second part 312a of one or more first X-shaped frames 310a rotate around the shaft as a pivot point, causing the upper end of the first part 311a and the upper end of the second part 312a to move away from each other in the Y-Y' direction, and the lower end of the first part 311a and the lower end of the second part 312a to move away from each other in the Y-Y' direction, thereby opening up in an X shape in the Y-Y' direction. Consequently, the first end of the first rotating piece 320a and the upper end of the second part 312a of the first X-shaped frame 310a on the Y-side rotate, causing the first end of the first rotating piece 320a and the upper end of the second part 312a of the first X-shaped frame 310a on the Y-side move toward the Z' direction, and the first end of the second rotating piece 330a and the upper end of the first part 311a of the first X-shaped frame 310a on the Y' side rotate, causing the first end of the second rotating piece 330a and the upper end of the first part 311a of the first X-shaped frame 310a on the Y' side move toward the Z' direction. In this way, the first telescopic frame 300a is unfolded in the Y-Y' direction and becomes open. The second telescopic frame 300b is also unfolded and becomes open, similar to the first telescopic frame 300a.

[0036] On the other hand, the first part 311a and the second part 312a of one or more first X-shaped frames 310a rotate around the shaft as a pivot point, causing the upper end of the first part 311a and the upper end of the second part 312a of one or more first X-shaped frames 310a to move closer to each other in the Y-Y' direction, and the lower end of the first part 311a and the lower end of the second part 312a of one or more first X-shaped frames 310a to move closer to each other in the Y-Y' direction, thereby closing in the Y-Y' direction. Consequently, the first end of the first rotating piece 320a and the upper end of the second part 312a of the first X-shaped frame 310a on the Y-side (or the side furthest in the Y direction) rotate, causing the first end of the first rotating piece 320a and the upper end of the second part 312a of the first X-shaped frame 310a on the Y-side (or the side furthest in the Y direction) to convex toward the Z direction, and the first end of the second rotating piece 330a and the upper end of the first part 311a of the first X-shaped frame 310a on the Y'-side (or the side furthest in the Y' direction) rotate, causing the first end of the second rotating piece 330a and the upper end of the first part 311a of the first X-shaped frame 310a on the Y'-side to convex toward the Z direction. In this way, the first telescopic frame 300a contracts in the Y-Y' direction and becomes closed. The second telescopic frame 300b also contracts in the Y-Y' direction and becomes closed, similar to the first telescopic frame 300a.

[0037] With the first telescopic frame 300a and the second telescopic frame 300b in the open state, the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d are separated in the Y-Y' direction, and the liner 100 is unfolded into a box shape between the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d. As the first telescopic frame 300a and the second telescopic frame 300b deform from the open state to the closed state, the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d move closer together in the Y-Y' direction, and as a result, the liner 100 is folded between the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d.

[0038] At least one connecting section 400 includes a first connecting section 400a and / or a second connecting section (not shown). The first connecting section 400a connects the first support column 200a and the second support column 200b. The second connecting section connects the third support column 200c and the fourth support column 200d. Note that the first connecting section 400a or the second connecting section is optional.

[0039] At least one connecting portion 400 may further include, in addition to the first connecting portion 400a and / or the second connecting portion, or in place of the first connecting portion 400a and / or the second connecting portion, a third connecting portion 400c and a fourth connecting portion 400d, which are positioned on the Z' side relative to the bottom portion 110 of the liner 100.

[0040] The third connecting section 400c has a pair of rotating levers 410c and one or more connecting section bodies 420c. The pair of rotating levers 410c are poles or rods that extend in the Y-Y' direction and are spaced apart in the X-X' direction, and each has a first end on the Y direction side and a second end on the Y' direction side. The first ends of the pair of rotating levers 410c are rotatably connected to the lower end of the first support column 200a and the lower end of the second support column 200b. One or more connecting section bodies 420c are poles or rods that extend in the X-X' direction and connect the pair of rotating levers 410c.

[0041] The fourth connecting section 400d has a pair of rotating levers 410d and one or more connecting section bodies 420d. The pair of rotating levers 410d are poles or rods that extend in the Y-Y' direction and are positioned inside or outside the pair of rotating levers 410c, and each has a first end on the Y' direction side and a second end on the Y direction side. The first ends of the pair of rotating levers 410d are rotatably connected to the lower ends of the third support column 200c and the lower end of the fourth support column 200d. The second ends of the pair of rotating levers 410c are rotatably connected to the second ends of the pair of rotating levers 410d. One or more connecting section bodies 420d are poles or rods that extend in the X-X' direction and connect the pair of rotating levers 410d.

[0042] With the first telescopic frame 300a and the second telescopic frame 300b in the open state, the pair of rotating levers 410c of the third connecting section 400c and the pair of rotating levers 410d of the fourth connecting section 400d are positioned to extend in the Y-Y' direction. As the first telescopic frame 300a and the second telescopic frame 300b deform from the open state to the closed state, the first ends of the pair of rotating levers 410c of the third connecting section 400c rotate, the first ends of the pair of rotating levers 410d of the fourth connecting section 400d rotate, the second ends of the pair of rotating levers 410d of the third connecting section 400c rotate, and the second ends of the pair of rotating levers 410d of the fourth connecting section 400d rotate, causing the third connecting section 400c and the fourth connecting section 400d to fold into a roughly V-shape that is convex toward the Z direction. As a result, the third connecting portion 400c and the fourth connecting portion 400d push up the bottom portion 110 of the liner 100 in the Z direction.

[0043] (2) The transport vehicle body CM has the same configuration as the transport vehicle body CM described in (1) above, except that (a) the first support column 200a, the second support column 200b, the third support column 200c and the fourth support column 200d are configured to be extendable in the Z-Z' direction, (b) the first telescopic frame 300a does not have the first rotating piece 320a and the second rotating piece 330a, and (c) the second telescopic frame 300b does not have the first rotating piece 320b and the second rotating piece 330b. The differences will be explained in detail below.

[0044] The first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d each have a lower pole on the Z' direction side and an upper pole on the Z direction side. The upper pole is inserted into the lower pole in a nested manner so as to be movable in the Z-Z' direction. When the upper pole moves in the Z direction relative to the lower pole, the first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d each extend, while when the upper pole moves in the Z' direction relative to the lower pole, the first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d each contract.

[0045] When there is at least one first X-shaped frame 310a and at least one second X-shaped frame 310b (not shown), (2) one first X-shaped frame 310a and one second X-shaped frame 310b of the transport vehicle body CM have the same configuration as the one first X-shaped frame 310a and one second X-shaped frame 310b of the transport vehicle body CM in (1) above, except that their configurations differ in the following respects.

[0046] The lower end of the first part 311a of the first X-shaped frame 310a is rotatably connected to the lower pole of the first support column 200a, and the upper end of the second part 312a of the first X-shaped frame 310a is rotatably connected to the upper pole of the first support column 200a. The lower end of the second part 312a of the first X-shaped frame 310a is rotatably connected to the lower pole of the third support column 200c, and the upper end of the first part 311a of the first X-shaped frame 310a is rotatably connected to the upper pole of the third support column 200c.

[0047] The lower end of the first part 311b of the first second X-shaped frame 310b is rotatably connected to the lower pole of the second support column 200b, and the upper end of the second part 312b of the first second X-shaped frame 310b is rotatably connected to the upper pole of the second support column 200b. The lower end of the second part 312b of the first second X-shaped frame 310b is rotatably connected to the lower pole of the fourth support column 200d, and the upper end of the first part 311b of the first second X-shaped frame 310b is rotatably connected to the upper pole of the fourth support column 200d.

[0048] When there are multiple first X-shaped frames 310a and multiple second X-shaped frames 310b (see Figure 4), (2) the multiple first X-shaped frames 310a and multiple second X-shaped frames 310b of the transport vehicle body CM have the same configuration as the multiple first X-shaped frames 310a and multiple second X-shaped frames 310b of the transport vehicle body CM in (1) above, except that their configuration differs in the following respects.

[0049] The lower end of the first part 311a of the first X-shaped frame 310a on the Y-direction side is rotatably connected to the lower pole of the first support column 200a, and the upper end of the second part 312a of the first X-shaped frame 310a is rotatably connected to the upper pole of the first support column 200a. The lower end of the second part 312a of the first X-shaped frame 310a on the Y'-direction side is rotatably connected to the lower pole of the third support column 200c, and the upper end of the first part 311a of the first X-shaped frame 310a on the Y'-direction side is rotatably connected to the upper pole of the third support column 200c.

[0050] The lower end of the first part 311b of the second X-shaped frame 310b on the Y-side is rotatably connected to the lower pole of the second support column 200b, and the upper end of the second part 312b of the second X-shaped frame 310b is rotatably connected to the upper pole of the second support column 200b. The lower end of the second part 312b of the second X-shaped frame 310b on the Y'-side is rotatably connected to the lower pole of the fourth support column 200d, and the upper end of the first part 311b of the second X-shaped frame 310b on the Y'-side is rotatably connected to the upper pole of the fourth support column 200d.

[0051] The first support column 200a and the third support column 200c extend, and the first part 311a and the second part 312a of one or more first X-shaped frames 310a rotate around the shaft as a pivot point, so that the lower ends of the first part 311a and the lower ends of the second part 312a of one or more first X-shaped frames 310a move away from each other in the Y-Y' direction, and the upper ends of the first part 311a and the upper ends of the second part 312a of one or more first X-shaped frames 310a move away from each other in the Y-Y' direction, thereby opening into an X shape in the Y-Y' direction. In this way, the first telescopic frame 300a is unfolded and opened in the Y-Y' direction.

[0052] Meanwhile, the first support column 200a and the third support column 200c retract, and the first part 311a and the second part 312a of one or more first X-shaped frames 310a rotate around the shaft as a pivot point, so that the lower ends of the first part 311a and the second part 312a of one or more first X-shaped frames 310a move closer to each other in the Y-Y' direction, and the upper ends of the first part 311a and the second part 312a of one or more first X-shaped frames 310a move closer to each other in the Y-Y' direction, thereby closing in the Y-Y' direction. In this way, the first telescopic frame 300a retracts in the Y-Y' direction and enters a closed state.

[0053] The second support column 200b and the fourth support column 200d extend, and the first part 311b and the second part 312b of one or more second X-shaped frames 310b rotate around the shaft as a pivot point, so that the lower ends of the first part 311b and the lower ends of the second part 312b of one or more second X-shaped frames 310b move away from each other in the Y-Y' direction, and the upper ends of the first part 311b and the upper ends of the second part 312b of one or more second X-shaped frames 310b move away from each other in the Y-Y' direction, thereby opening into an X shape in the Y-Y' direction. In this way, the second telescopic frame 300b is unfolded and in an open state in the Y-Y' direction.

[0054] Meanwhile, the second support column 200b and the fourth support column 200d retract, and the lower ends of the first part 311b and the second part 312b of one or more second X-shaped frames 310b move closer to each other in the Y-Y' direction, and the upper ends of the first part 311b and the second part 312b of one or more second X-shaped frames 310b move closer to each other in the Y-Y' direction, as the first part 311b and the second part 312b of one or more second X-shaped frames 310b rotate around the shaft as a pivot point, thereby closing in the Y-Y' direction. In this way, the second telescopic frame 300b retracts in the Y-Y' direction and enters a closed state.

[0055] With the first telescopic frame 300a and the second telescopic frame 300b in the open state, the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d are separated in the Y-Y' direction, and the liner 100 is unfolded into a box shape between the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d. As the first telescopic frame 300a and the second telescopic frame 300b deform from the open state to the closed state, the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d move closer together in the Y-Y' direction, and as a result the liner 100 is folded between the first support column 200a and the second support column 200b and the third support column 200c and the fourth support column 200d.

[0056] (3) The transport vehicle body CM has the same configuration as the transport vehicle body CM in (2) above, except that it further has a third telescopic frame 300c and a fourth telescopic frame 300d in place of at least one connecting section 400 (see Figure 4). The differences will be explained in detail below. Note that in Figure 4, the extensions 630 of the liner 100 and the locking section 600 are omitted from the illustration.

[0057] The third telescopic frame 300c is positioned between the first support column 200a and the second support column 200b and is configured to be extendable and retractable in the X-X' direction. The third telescopic frame 300c has, for example, a third X-shaped frame 310c. The third X-shaped frame 310c is positioned between the first support column 200a and the second support column 200b. The third X-shaped frame 310c has a first part 311c and a second part 312c. The first part 311c and the second part 312c are poles or rods that intersect each other in an X shape and are rotatably connected by an axis at their intersection. The first part 311c and the second part 312c each have an upper end and a lower end. The upper end of the first part 311c is rotatably connected to the upper pole of the second support column 200b. The lower end of the first part 311c is rotatably connected to the lower pole of the first support column 200a. The upper end of the second section 312c is rotatably connected to the upper pole of the first support column 200a. The lower end of the second section 312c is rotatably connected to the lower pole of the second support column 200b.

[0058] The fourth telescopic frame 300d is positioned between the third support column 200c and the fourth support column 200d and is configured to be extendable and retractable in the X-X' direction. The fourth telescopic frame 300d has, for example, a fourth X-shaped frame 310d. The fourth X-shaped frame 310d is positioned between the third support column 200c and the fourth support column 200d. The fourth X-shaped frame 310d has a first part 311d and a second part 312d. The first part 311d and the second part 312d are poles or rods that intersect each other in an X shape and are rotatably connected by an axis at their intersection. The first part 311d and the second part 312d each have an upper end and a lower end. The upper end of the first part 311d is rotatably connected to the upper pole of the fourth support column 200d. The lower end of the first part 311d is rotatably connected to the lower pole of the third support column 200c. The upper end of the second section 312d is rotatably connected to the upper pole of the third support column 200c. The lower end of the second section 312d is rotatably connected to the lower pole of the fourth support column 200d.

[0059] The first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d extend, and the first telescopic frame 300a and the second telescopic frame 300b are unfolded in the Y-Y' direction as described above, and the lower ends of the first part 311c and the second part 312c of the third X-shaped frame 310c are separated from each other in the Y-Y' direction, and the upper ends of the first part 311c and the second part 312c of the third X-shaped frame 310c are separated from each other in the Y-Y' direction, The first part 311c and the second part 312c of the 3X-shaped frame 310c rotate around the shaft, and the first part 311d and the second part 312d of the 4X-shaped frame 310d rotate around the shaft such that the lower ends of the first part 311d and the lower ends of the second part 312d of the 4X-shaped frame 310d move away from each other in the Y-Y' direction, and the upper ends of the first part 311d and the upper ends of the second part 312d of the 4X-shaped frame 310d move away from each other in the Y-Y' direction. In this way, the third telescopic frame 300c and the fourth telescopic frame 300d are unfolded in the X-X' direction and become open.

[0060] Meanwhile, the first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d are retracted, and the first telescopic frame 300a and the second telescopic frame 300b are retracted in the Y-Y' direction as described above, so that the lower ends of the first part 311c and the second part 312c of the third X-shaped frame 310c approach each other in the Y-Y' direction, and the upper ends of the first part 311c and the second part 312c of the third X-shaped frame 310c approach each other in the Y-Y' direction. The first part 311c and the second part 312c of the third X-shaped frame 310c rotate around the shaft, and the first part 311d and the second part 312d of the fourth X-shaped frame 310d rotate around the shaft so that the lower ends of the first part 311d and the lower ends of the second part 312d of the fourth X-shaped frame 310d approach each other in the Y-Y' direction, and the upper ends of the first part 311d and the upper ends of the second part 312d of the fourth X-shaped frame 310d approach each other in the Y-Y' direction. In this way, the third telescopic frame 300c and the fourth telescopic frame 300d contract in the X-X' direction and become closed.

[0061] The transport vehicle body CM may further have four wheels 500. The four wheels 500 may be fixed to the first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d, respectively (see Figures 1A to 2E and Figure 4). Alternatively, if the transport vehicle body CM has a first connecting section 400a and a second connecting section, the four wheels 500 may include two wheels 500 on the Y-direction side and two wheels 500 on the Y-direction side, with the two wheels 500 on the Y-direction side being fixed to the first connecting section 400a and spaced apart in the X-X' direction, and the two wheels 500 on the Y'-direction side being fixed to the second connecting section and spaced apart in the X-X' direction (not shown). Alternatively, if the transport vehicle body CM has a third connecting section 400c and a fourth connecting section 400d, the four wheels 500 may include two wheels 500 on the Y-direction side and two wheels 500 on the Y-direction side, with the two wheels 500 on the Y-direction side being fixed to a pair of rotating levers 410c of the third connecting section 400c and the two wheels 500 on the Y'-direction side being fixed to a pair of rotating levers 410d of the fourth connecting section 400d (not shown).

[0062] The transport vehicle body CM further has at least one locking part 600.

[0063] If there is at least one locking portion 600, then the locking portion 600 has a pair of extension columns 610. The pair of extension columns 610 of the locking portion 600 extend in the Z direction from the first support column 200a and the second support column 200b, or the third support column 200c and the fourth support column 200d, beyond the liner 100.

[0064] If at least one locking portion 600 is two, the two locking portions 600 include a locking portion 600 on the Y-direction side and a locking portion 600 on the Y'-direction side. Each locking portion 600 has a pair of extension columns 610. The pair of extension columns 610 of the locking portion 600 on the Y-direction side extend in the Z-direction beyond the liner 100 from the first support column 200a and the second support column 200b. The pair of extension columns 610 of the locking portion 600 on the Y'-direction side extend in the Z-direction beyond the liner 100 from the third support column 200c and the fourth support column 200d.

[0065] In both the case of one locking portion 600 and the case of two locking portions 600, the pair of extension columns 610 can be configured to extend in the Z direction beyond the third wall portion 120c and the fourth wall portion 120d of the liner 100.

[0066] A locking portion 600 may further have at least one connecting portion 620. The at least one connecting portion 620 is one or more. One or more connecting portions 620 of a locking portion 600 connect a pair of extension columns 610 of a locking portion 600. One or more connecting portions 620 of a locking portion 600 may connect the upper ends of a pair of extension columns 610 of a locking portion 600 on the Z-direction side, or they may connect portions of a pair of extension columns 610 of a locking portion 600 on the Z'-direction side of the upper ends.

[0067] The locking portion 600 on the Y-direction side may further have at least one connecting portion 620, and the locking portion 600 on the Y'-direction side may further have at least one connecting portion 620. One or more connecting portions 620 of the locking portion 600 on the Y-direction side connect the pair of extension columns 610 of the locking portion 600 on the Y-direction side as described above. One or more connecting portions 620 of the locking portion 600 on the Y'-direction side connect the pair of extension columns 610 of the locking portion 600 on the Y'-direction side as described above. In Figures 2C, 2D, and 4, the connecting portion 620 of the locking portion 600 on the Y-direction side connects the upper ends of the pair of extension columns 610 of the locking portion 600 on the Y-direction side, and the connecting portion 620 and the pair of extension columns 610 of the locking portion 600 on the Y-direction side form a roughly U-shape. The connecting portion 620 of the locking portion 600 on the Y'-direction side connects the upper ends of the pair of extension columns 610 of the locking portion 600 on the Y'-direction side, and the connecting portion 620 and the pair of extension columns 610 of the locking portion 600 on the Y'-direction side form a roughly U-shape. Note that at least one connecting portion 620 can be omitted.

[0068] One locking portion 600 may further have a sheet-like extension portion 630. The extension portion 630 is made of, for example, polyester, polyvinyl chloride, nylon, or cotton, and extends in the Z direction from the first wall portion 120a or the second wall portion 120b of the liner 100 to the third wall portion 120c and the fourth wall portion 120d. The extension portion 630 of one locking portion 600 is supported by a pair of extension columns 610 of one locking portion 600, or by a pair of extension columns 610 and a connecting portion 620 of one locking portion 600. The extension portion 630 has a downward-opening pocket 631. A pair of extension columns 610 of one locking portion 600, or a pair of extension columns 610 and a connecting portion 620 of one locking portion 600, are inserted into the pocket 631 from the Z' direction, thereby the pair of extension columns 610 of one locking portion 600, or a pair of extension columns 610 and a connecting portion 620 of one locking portion 600, support the extension portion 630 of one locking portion 600.

[0069] The locking portion 600 on the Y-direction side may further have an extension portion 630, and the locking portion 600 on the Y'-direction side may further have an extension portion 630 (see Figures 1A to 2E). The extension portion 630 of the locking portion 600 on the Y-direction side is supported by a pair of extension columns 610 of the locking portion 600 on the Y-direction side as described above, or by a pair of extension columns 610 of the locking portion 600 on the Y-direction side and one or more connecting portions 620 connecting them, as described above. The extension portion 630 of the locking portion 600 on the Y'-direction side is supported by a pair of extension columns 610 of the locking portion 600 on the Y'-direction side as described above, or by a pair of extension columns 610 of the locking portion 600 on the Y'-direction side and one or more connecting portions 620 connecting them, as described above.

[0070] Note that at least one extension 630 can be omitted. In this case, the liner 100 is supported by the first support 200a, the second support 200b, the third support 200c, and the fourth support 200d. Even when at least one extension 630 is provided, the liner 100 may still be supported by the first support 200a, the second support 200b, the third support 200c, and the fourth support 200d.

[0071] The transport vehicle C1 further comprises a bag CB. The bag CB has a bag body 10 having an upper opening (an opening in the Z direction) and a pocket 20. The pocket 20 is provided on the bag body 10 and opens in the Z' direction. That is, the pocket 20 opens downward. The pocket 20 has a lower edge 21. One of the locking parts 600 of any of the above configurations or one of the two locking parts 600 of any of the above configurations is inserted into the pocket 20 from the Z' side. In this inserted state, the lower edge 21 of the pocket 20 is supported by the third wall portion 120c and the fourth wall portion 120d of the liner 100. This state is referred to as the "supported state". If one of the locking parts 600 is located on the Y-direction side, in the supported state, the portion of the bag body 10 on the Z'-direction side relative to the pocket 20 may be in contact with the first wall portion 120a of the liner 100 from the Y-direction side. If one of the locking parts 600 is located on the Y'-direction side, in the supported state, the portion of the bag body 10 on the Z'-direction side relative to the pocket 20 may be in contact with the second wall portion 120b of the liner 100 from the Y'-direction side.

[0072] The transport vehicle C1 described above exhibits the following technical features and effects: (1) to (3).

[0073] (1) Technical features and effects With the locking portion 600 of the transport vehicle body CM inserted into the pocket 20 of the bag CB, the lower edge 21 of the pocket 20 is supported by the liner 100, so the bag CB can be held separately from the liner 100.

[0074] (2) Technical features and effects With the locking portion 600 of the transport vehicle body CM inserted into the pocket 20 of the bag CB, the lower edge 21 of the pocket 20 is supported by the liner 100, so the bag body 10 is stably held by the locking portion 600 and the liner 100. Furthermore, in the supported state, if the portion of the bag body 10 on the Z' side relative to the pocket 20 abuts against the first wall portion 120a or the second wall portion 120b of the liner 100, the bag body 10 is held even more stably by the locking portion 600 and the liner 100.

[0075] (3) Technical features and effects A pair of extension columns 610 of the locking portion 600 extend from the first support column 200a and the second support column 200b, or the third support column 200c and the fourth support column 200d of the transport vehicle body CM. In other words, a pair of extension columns 610 can be constructed simply by extending the first support column 200a and the second support column 200b, or the third support column 200c and the fourth support column 200d that constitute the transport vehicle body CM, thus suppressing the increase in the number of parts compared to the case where the locking portion 600 is provided separately. Furthermore, if one connecting portion 620 of the locking portion 600 connects the upper ends of a pair of extension columns 610 to form a roughly U-shape, then the first support column 200a and the second support column 200b, or the third support column 200c and the fourth support column 200d of the transport vehicle body CM, as well as the pair of extension columns 610 and one connecting portion 620 of the locking portion 600, can be constructed using a roughly U-shaped pipe or rod. This allows for a reduction in the number of parts compared to the case where the locking portion 600 is provided separately. [Examples]

[0076] The following describes several embodiments of the present invention, including Embodiment 2 and its design modifications, with reference to Figures 5A to 5B. Figures 5A to 5B show the transport vehicle C2 of Embodiment 2. Figures 5A to 5B show the Z-Z', Y-Y', and X-X' directions.

[0077] Transport vehicle C2 has the same configuration as transport vehicle C1, except that the transport vehicle body CM' has a cargo box 700 with an upper opening 701 instead of a cargo box with a liner 100, the transport vehicle body CM' does not have the configuration of (1), (2), or (3) above, and at least one locking part 600 of the transport vehicle body CM' does not have an extension part 630. Below, only the differences will be explained in detail, and explanations that overlap with those for transport vehicle C1 will be omitted.

[0078] The cargo box 700 has a bottom 710, a first wall 720a, a second wall 720b, a third wall 720c, a fourth wall 720d, a first corner 730a, a second corner 730b, a third corner 730c, and a fourth corner 730d.

[0079] The bottom portion 710 is composed of a wire mesh (see Figure 5A), a plate (see Figure 5B), or a fence (not shown) that is approximately square or rectangular in shape when viewed from above (from the Z direction). The bottom portion 710 has a first side on the Y direction side, a second side on the Y' direction side, a third side on the X direction side, and a third side on the X' direction side.

[0080] The first wall portion 720a is composed of a wire mesh (see Figure 5A), a plate (see Figure 5B), or a fence (not shown) that is approximately square or rectangular when viewed from the Y direction. The first wall portion 720a extends in the Z direction from the first side of the base portion 710. The first wall portion 720a has a first end on the X direction side, a second end on the X' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The lower end of the first wall portion 720a is connected to or joined to the first side of the base portion 710.

[0081] The second wall portion 720b is composed of a wire mesh (see Figure 5A), a plate (see Figure 5B), or a fence (not shown) that is approximately square or rectangular when viewed from the Y' direction. The second wall portion 720b extends in the Z direction from the second side of the bottom portion 710 and faces the first wall portion 720a in the Y-Y' direction. The second wall portion 720b has a first end on the X direction side, a second end on the X' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The lower end of the second wall portion 720b is connected to or joined to the second side of the bottom portion 710.

[0082] The third wall section 720c is composed of a wire mesh (see Figure 5A), a plate (see Figure 5B), or a fence (not shown) that is approximately square or rectangular when viewed from the X direction. The third wall section 720c extends in the Z direction from the first side of the bottom section 710. The third wall section 720c has a first end on the Y direction side, a second end on the Y' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The first end of the third wall section 720c and the first end of the first wall section 720a are adjacent with a gap between them (see Figures 5A and 5B) or butted together (not shown) to form the first corner section 730a. The second end of the third wall section 720c and the first end of the second wall section 720b are adjacent with a gap between them (see Figures 5A and 5B) or butted together (not shown) to form the third corner section 730c. The lower end of the third wall portion 720c is connected to or joined to the third side of the bottom portion 710.

[0083] The fourth wall section 720d is composed of a wire mesh (see Figure 5A), a plate (see Figure 5B), or a fence (not shown) that is approximately square or rectangular when viewed from the X' direction. The fourth wall section 720d extends in the Z direction from the fourth side of the bottom section 710 and faces the third wall section 720c in the X-X' direction. The fourth wall section 720d has a first end on the Y direction side, a second end on the Y' direction side, an upper end on the Z direction side, and a lower end on the Z' direction side. The first end of the fourth wall section 720d and the second end of the first wall section 720a are adjacent to each other with a gap in between (see Figures 5A and 5B) or butted together (not shown) to form the second corner section 730b. The second end of the fourth wall portion 720d and the second end of the second wall portion 720b are adjacent to each other with a gap in between (see Figures 5A and 5B) or abutted together (not shown) to form the fourth corner portion 730d. The lower end of the fourth wall portion 720d is connected to or joined to the fourth side of the bottom portion 710.

[0084] The space partitioned by the bottom 710, the first wall 720a, the second wall 720b, the third wall 720c, and the fourth wall 720d becomes the storage space of the cargo box 700.

[0085] The dimensions in the Z-Z' direction of the first wall section 720a, the second wall section 720b, the third wall section 720c, and the fourth wall section 720d may be approximately the same (not shown), or the dimensions in the Z-Z' direction of one or two of the first wall section 720a, the second wall section 720b, the third wall section 720c, and the fourth wall section 720d may be approximately the same, and the dimensions in the Z-Z' direction of the remaining two or one wall section may be approximately the same, but the dimensions in the Z-Z' direction of the remaining two or one wall section may differ from the dimensions in the Z-Z' direction of one or two wall sections (see Figures 5A and 5B), or the dimensions in the Z-Z' direction of the four wall sections may differ (not shown).

[0086] The first support column 200a is positioned near the first corner 730a of the cargo box 700 (between the first end of the third wall 720c and the first end of the first wall 720a (see Figures 5A and 5B), either outside or inside the first corner 730a). The second support column 200b is positioned near the second corner 730b of the cargo box 700 (between the first end of the fourth wall 720d and the second end of the first wall 720a (see Figures 5A and 5B), either inside or outside the second corner 730b). The third support column 200c is positioned near the third corner 730c of the cargo box 700 (between the second end of the third wall 720c and the first end of the second wall 720b (see Figures 5A and 5B), either outside or inside the third corner 730c). The fourth support column 200d is positioned near the fourth corner 730d of the cargo box 700 (between the second end of the fourth wall 720d and the second end of the second wall 720b (see Figures 5A and 5B), either outside or inside the fourth corner 730d). Here, the side of the cargo box 700 that contains cargo space, separated by the first corner 730a, second corner 730b, third corner 730c, and fourth corner 730d, is referred to as the "inside," and the opposite side is referred to as the "outside."

[0087] At least one locking portion 600 of the transport vehicle body CM' has the same configuration as at least one locking portion 600 of the transport vehicle body CM, except that it does not have an extension portion 630.

[0088] One of the locking parts 600 with any of the above configurations, or one of the two locking parts 600 with any of the above configurations, is inserted into the pocket 20 from the Z' direction. In this inserted state, the lower edge 21 of the pocket 20 is supported by the third wall 120c and the fourth wall 120d of the liner 100. If one of the locking parts 600 is located on the Y direction side, in the supported state, the portion of the bag body 10 on the Z' direction side relative to the pocket 20 may be in contact with the first wall 720a from the Y direction side. If one of the locking parts 600 is located on the Y' direction side, in the supported state, the portion of the bag body 10 on the Z' direction side relative to the pocket 20 may be in contact with the second wall 720b from the Y' direction side.

[0089] The transport vehicle C2 described above exhibits the same technical characteristics and effects as the transport vehicle C1 described in (1) to (3) above. [Examples]

[0090] Hereinafter, a transport vehicle C3 according to multiple embodiments of the present invention, including Embodiment 3 and its design modifications, will be described with reference to Figure 6. Figure 6 shows the transport vehicle C3 of Embodiment 3. Figure 6 shows the Z-Z' direction, the Y-Y' direction, and the X-X' direction.

[0091] Transport vehicle C3 has the same configuration as transport vehicle C2, except that the transport vehicle body CM'' has at least one locking part 600' instead of at least one locking part 600. Below, only the difference will be explained in detail, and explanations that overlap with those for transport vehicle C2 will be omitted.

[0092] If there is at least one locking portion 600', then one locking portion 600' extends in the Z direction from the first wall portion 720a or the second wall portion 720b beyond the third wall portion 720c and the fourth wall portion 720d of the cargo box 700. Specifically, one locking portion 600' is composed of a wire mesh (not shown), a plate (see Figure 6), or a fence (not shown) connected to the first wall portion 720a or the second wall portion 720b.

[0093] If at least one locking portion 600' is two, the two locking portions 600' include a locking portion 600' on the Y-direction side and a locking portion 600' on the Y'-direction side. The locking portion 600' on the Y-direction side extends in the Z-direction from the first wall portion 720a beyond the third wall portion 720c and the fourth wall portion 720d of the cargo box 700. Specifically, the locking portion 600' on the Y-direction side is made of wire mesh (not shown), a plate (see Figure 6), or a fence (not shown) connected to the first wall portion 720a. The locking portion 600' on the Y-direction side extends in the Z-direction from the second wall portion 720b beyond the third wall portion 720c and the fourth wall portion 720d of the cargo box 700. Specifically, the locking portion 600' on the Y-direction side is composed of a wire mesh (not shown), a plate (see Figure 6), or a fence (not shown) connected to the second wall portion 720b.

[0094] One of the two locking parts 600' described above is inserted into the pocket 20 of bag CB from the Z' direction. In this inserted state, the lower edge 21 of the pocket 20 is supported by the third wall 720c and the fourth wall 720d of the cargo box 700. If one of the locking parts 600' is located on the Y direction side, in the supported state, the portion of the bag body 10 on the Z' direction side relative to the pocket 20 may be in contact with the first wall 720a from the Y direction side. If one of the locking parts 600' is located on the Y' direction side, in the supported state, the portion of the bag body 10 on the Z' direction side relative to the pocket 20 may be in contact with the second wall 720b from the Y' direction side.

[0095] In addition, the first support column 200a, the second support column 200b, the third support column 200c, and the fourth support column 200d in the transport vehicle body CM'' can be omitted. In this case, it is preferable that the first wall portion 720a of the cargo box 700, the third wall portion 720c, and the fourth wall portion 720d are fixed or integrated, and the second wall portion 720b, the third wall portion 720c, and the fourth wall portion 720d are fixed or integrated.

[0096] The transport vehicle C3 described above exhibits the same technical features and effects as the transport vehicle C1 described in (1) and (2) above. Furthermore, the transport vehicle C3 has at least one locking portion 600' that extends in the Z direction from the first wall portion 720a or the second wall portion 720b beyond the third wall portion 720c and the fourth wall portion 720d of the cargo box 700. In other words, at least one locking portion 600' can be constructed simply by extending the first wall portion 720a or the second wall portion 720b that constitutes the cargo box 700 of the transport vehicle body CM'', thus suppressing the increase in the number of parts compared to the case where at least one locking portion 600' is provided separately.

[0097] Furthermore, the transport vehicle described above is not limited to the above embodiment, and can be arbitrarily designed and modified within the scope of the claims. Details are described below.

[0098] In the transport vehicle described above, the Y-Y' direction corresponds to the second direction and the X-X' direction corresponds to the third direction. However, it is also possible to assume that the Y-Y' direction corresponds to the third direction and the X-X' direction corresponds to the second direction. In this case, in transport vehicle C1, the first wall portion 120a and the second wall portion 120b of the liner 100 become the third wall portion and the fourth wall portion of the liner 100, the third wall portion 120c and the fourth wall portion 120d of the liner 100 become the first wall portion and the second wall portion of the liner 100, the first support column 200a and the second support column 200b become the third support column and the fourth support column, and the third support column 200c and the fourth support column 200d become the first support column and the second support column. In transport vehicles C2 or C3, the first wall 720a and the second wall 720b of the cargo box 700 become the third wall and the fourth wall of the cargo box 700, the third wall 720c and the fourth wall 720d of the cargo box 700 become the first wall and the second wall of the cargo box 700, the first support column 200a and the second support column 200b become the third support column and the fourth support column, and the third support column 200c and the fourth support column 200d become the first support column and the second support column.

[0099] The transport vehicle C1 described above may further include a lid (not shown) that is placed on the liner 100. In this case, with one of the locking parts 600 of any of the above configurations, or one of the two locking parts 600 of any of the above configurations, inserted into the pocket 20 of the bag CB from the Z' direction, the lower edge 21 of the pocket 20 of the bag CB may be supported by the lid instead of the third wall 120c and fourth wall 120d of the liner 100. The transport vehicle C2 or C3 described above may further include a lid (not shown) that is placed on the cargo box 700. In this case, with one of the locking parts 600 of any of the above configurations, or one of the two locking parts 600 of any of the above configurations, inserted into the pocket 20 of the bag CB from the Z' direction, the lower edge 21 of the pocket 20 of the bag CB may be supported by the lid instead of the third wall 720c and fourth wall 720d of the cargo box 700. The transport vehicle C3 described above may also further include a lid (not shown) that is placed on the cargo box 700. In this case, with one of the locking parts 600' of any of the above configurations, or one of the two locking parts 600' of any of the above configurations, inserted into the pocket 20 of the bag CB from the Z' direction, the lower edge 21 of the pocket 20 of the bag CB may be supported by the lid instead of the third wall 720c and fourth wall 720d of the cargo box 700.

[0100] The aforementioned locking part is provided on the transport vehicle body, extends in the Z direction from the cargo box, and can be inserted into the pocket 20 of the bag CB from the Z' direction. [Explanation of Symbols]

[0101] C1, C2, C3: Transport vehicles CM, CM': Transport vehicle body 100: Liner 101: Upper opening 110: Bottom 120a: First wall 120b: Second wall 120c: Third wall 120d: Fourth wall 130a: First corner 130b: Second corner 130c: Third corner 130d: Fourth corner 200a: 1st pillar 200b: 2nd pillar 200c: 3rd pillar 200d: 4th pillar 300a: First telescopic frame 300b: Second telescopic frame 310a: First X-shaped frame 310b: Second X-shaped frame 400: Connecting part 400a: First connecting part 400c: Third connecting part 400d: Fourth connecting part 500:wheel 600, 600': Locking part 610: Extension column 620: Connecting part 630: Extension part 631: Pocket 700: Packing box 710: Bottom 720a: First wall 720b: Second wall 720c: Third wall 720d: Fourth wall 730a: First corner 730b: Second corner 730c: Third corner 730d: Fourth corner CB: Bag 10: Bag body 20: Pocket 21: Bottom edge

Claims

1. The transport vehicle body and It comes with a bag, The transport vehicle body has a cargo box with an upper opening and a locking mechanism. The locking portion extends above the cargo box, The aforementioned bag consists of the bag body and The bag body has a downward-opening pocket, A transport vehicle in which the lower edge of the pocket is supported by the cargo box, with the locking portion inserted into the pocket.

2. In the transport vehicle according to claim 1, The cargo box has a flexible, box-shaped liner with the upper opening, The liner has a sheet-like bottom portion that is approximately square or rectangular in shape when viewed from above, a sheet-like first wall portion, a sheet-like second wall portion, a sheet-like third wall portion, a sheet-like fourth wall portion, a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion. The first wall, the second wall, the third wall, and the fourth wall extend from the bottom in a first direction which is the height direction of the cargo box, the first wall and the second wall face each other in a second direction and have a first end on one side in a third direction and a second end on the other side in a third direction, the third wall and the fourth wall face each other in a third direction and have a first end on one side in a second direction and a second end on the other side in a second direction, the second direction is substantially perpendicular to the first direction, and the third direction is substantially perpendicular to the first and second directions. The first corner is formed by the first end of the first wall and the first end of the third wall abutting together, the second corner is formed by the second end of the first wall and the first end of the fourth wall abutting together, the third corner is formed by the first end of the second wall and the second end of the third wall abutting together, and the fourth corner is formed by the second end of the second wall and the second end of the fourth wall abutting together, The transport vehicle body further comprises a first support column, a second support column, a third support column, and a fourth support column. The first support column extends in the first direction and is located outward with respect to the first corner of the liner, The second support column extends in the first direction and is located outward with respect to the second corner of the liner, The third support extends in the first direction and is located outward with respect to the third corner of the liner, The fourth support extends in the first direction and is located outward from the fourth corner of the liner, The locking portion has a pair of extension columns that extend from the first column, the second column or the third column, or the fourth column upwards from the third wall and the fourth wall. A transport vehicle in which the lower edge of the pocket is supported by the third wall and the fourth wall, with the locking portion inserted into the pocket.

3. In the transport vehicle according to claim 2, The locking portion further has a connecting portion that connects the pair of extension columns, in a transport vehicle.

4. In the transport vehicle according to claim 2 or 3, The aforementioned locking portion further has a sheet-like extension, A transport vehicle in which the extension extends from the first wall or the second wall above the third wall and the fourth wall and is supported by the pair of extension columns or the connecting portion.

5. In the transport vehicle according to claim 1, The aforementioned cargo box has a bottom that is approximately square or rectangular in shape when viewed from above, a first wall, a second wall, a third wall, a fourth wall, a first corner, a second corner, a third corner, and a fourth corner. The first wall, the second wall, the third wall, and the fourth wall extend from the bottom in a first direction which is the height direction of the cargo box, the first wall and the second wall face each other in a second direction and have a first end on one side in a third direction and a second end on the other side in a third direction, the third wall and the fourth wall face each other in a third direction and have a first end on one side in a second direction and a second end on the other side in a second direction, the second direction is substantially perpendicular to the first direction, and the third direction is substantially perpendicular to the first and second directions. The first corner is formed by the first end of the first wall and the first end of the third wall abutting together or adjacent with a gap between them, the second corner is formed by the second end of the first wall and the first end of the fourth wall abutting together or adjacent with a gap between them, the third corner is formed by the first end of the second wall and the second end of the third wall abutting together or adjacent with a gap between them, and the fourth corner is formed by the second end of the second wall and the second end of the fourth wall abutting together or adjacent with a gap between them. The transport vehicle body further comprises a first support column, a second support column, a third support column, and a fourth support column. The first support column extends in the first direction, is located near the first corner, and supports at least one of the first wall and the third wall. The second support column extends in the first direction, is located near the second corner, and supports at least one of the first wall and the fourth wall. The third support extends in the first direction, is located near the third corner, and supports at least one of the second wall and the third wall. The fourth support column extends in the first direction, is located near the fourth corner, and supports at least one of the second wall and the fourth wall. The locking portion has a pair of extension columns that extend from the first column, the second column or the third column, or the fourth column upwards from the third wall and the fourth wall. A transport vehicle in which the lower edge of the pocket is supported by the third wall and the fourth wall, with the locking portion inserted into the pocket.

6. In the transport vehicle according to claim 5, The locking portion further has a connecting portion that connects the pair of extension columns, in a transport vehicle.

7. In the transport vehicle according to claim 1, The aforementioned cargo box has a bottom that is approximately square or rectangular in shape when viewed from above, a first wall, a second wall, a third wall, and a fourth wall. The first wall, the second wall, the third wall, and the fourth wall extend from the bottom in a first direction which is the height direction of the cargo box, the first wall and the second wall face each other in a second direction which is substantially perpendicular to the first direction, and the third wall and the fourth wall face each other in a third direction which is substantially perpendicular to the first and second directions. The locking portion extends from the first wall portion or the second wall portion upward above the third wall portion and the fourth wall portion. A transport vehicle in which the lower edge of the pocket is supported by the third wall and the fourth wall, with the locking portion inserted into the pocket.

8. In the transport vehicle according to claim 1, 2, 3, 5, 6, or 7, The cargo box further has a lid that at least partially closes the upper opening of the cargo box, A transport vehicle in which the lower edge of the pocket is supported by the lid, with the locking portion inserted into the pocket.

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