Transport trolley

Abstract

To provide a carrying carriage that can prevent a distance between a pair of side frames from varying.SOLUTION: A carrying carriage 10 includes: a carriage body 50 having a pair of side frames 51, 52 and a connection member 53 for connecting the pair of side frames 51, 52 to each other; and a plurality of heat insulation panels 11 to 16 arranged to the carriage body 50. An upper shelf board 71 is detachably disposed in a position higher than one third position in a height direction of the pair of side frames 51, 52.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a transport cart.

Background Art

[0002] Conventionally, for example, in stores, factories, etc., transport carts for transporting loaded items such as food have been used. Such a transport cart has a cart (cart body) having a pair of side frames. On the cart, in order to keep warm, cool, or protect loaded items such as food, a heat-insulating cart cover is attached. As such a transport cart, for example, the one disclosed in Patent Document 1 is known. is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The conventional cart cover for a transport cart is generally composed of, for example, a sewn sheet material and is thin and flexible (see, for example, Patent Document 1). For this reason, in the conventional cart cover, there is a problem that it is difficult to sufficiently enhance the heat insulation performance or sufficiently protect the loaded items inside. On the other hand, it is also conceivable to assemble panels into a box shape and mount them on the cart. However, in the conventional cart, in order to facilitate the transportation of luggage, the height of the load space (pillar) is made high,

[0005] and it is easy for the verticality of the left and right side frames to wobble. For this reason, between the pair of left and right side frames the height of the load space (pillar) is increased, and the verticality of the left and right side frames is likely to wobble. For this reason, between the pair of left and right side frames There are also fluctuations in distance, which may affect the fitting between the panels.

[0006] The present disclosure provides a transport cart capable of suppressing fluctuations in the distance between a pair of side frames. 。

Means for Solving the Problem

[0007] The transport cart according to the present embodiment is a transport cart, and includes a cart body having a pair of side frames and a connecting member that connects the pair of side frames to each other, a plurality of heat insulation panels disposed on the cart body, and an upper shelf board removably disposed at a position above 1 / 3 of the height direction of the pair of side frames. frames to each other, and a plurality of heat insulation panels disposed on the cart body, and an upper shelf board removably disposed at a position above 1 / 3 of the height direction of the pair of side frames. In the transport cart according to the present embodiment, the upper shelf board may be removably attached to the pair of side frames. In the transport cart according to the present embodiment, the upper shelf board may be removably attached to some of the plurality of heat insulation panels.

[0008] In the transport cart according to the present embodiment, the upper shelf board may be removably attached to some of the plurality of heat insulation panels. In the transport cart according to the present embodiment, the upper shelf board may be removably attached to some of the plurality of heat insulation panels.

[0009] In the transport cart according to the present embodiment, the plurality of heat insulation panels may be capable of taking a deployed state in which the plurality of heat insulation panels are deployed in a box shape and a folded state in which the plurality of heat insulation panels are folded to be nestable with other transport carts. In the transport cart according to the present embodiment, the plurality of heat insulation panels may be capable of taking a deployed state in which the plurality of heat insulation panels are deployed in a box shape and a folded state in which the plurality of heat insulation panels are folded to be nestable with other transport carts.

[0010] In the transport cart according to the present embodiment, the plurality of heat insulation panels may be capable of taking a deployed state in which the plurality of heat insulation panels are deployed in a box shape and a folded state in which the plurality of heat insulation panels are folded to be nestable with other transport carts. In the transport cart according to the present embodiment, the plurality of heat insulation panels may be capable of taking a deployed state in which the plurality of heat insulation panels are deployed in a box shape and a folded state in which the plurality of heat insulation panels are folded to be nestable with other transport carts. In the transport cart according to the present embodiment, the plurality of heat insulation panels may be capable of taking a deployed state in which the plurality of heat insulation panels are deployed in a box shape and a folded state in which the plurality of heat insulation panels are folded to be nestable with other transport carts.

[0011] In the transport cart according to the present embodiment, an intermediate shelf board may be removably disposed at a position below the upper shelf board. In the transport cart according to the present embodiment, an intermediate shelf board may be removably disposed at a position below the upper shelf board.

[0012] In the transport cart according to the present embodiment, the plurality of heat insulation panels include at least a top surface panel It has a net, a front panel, a back panel, and a pair of side panels, and the front panel may be openable.

[0013] In the trolley for transportation according to the present embodiment, a refrigerant may be disposed on the upper shelf board.

[0014] In the trolley for transportation according to the present embodiment, a plurality of through holes may be formed in the upper shelf board.

[0015] In the trolley for transportation according to the present embodiment, a groove may be formed on the upper surface of the upper shelf board.

Advantages of the Invention

[0016] According to the present embodiment, it is possible to suppress fluctuations in the distance between the pair of side frames.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0018] Hereinafter, an embodiment will be described with reference to the drawings. Each of the drawings shown below is schematic as shown. Therefore, for the sake of easy understanding, the sizes and shapes of each part are appropriately exaggerated . Also, it can be appropriately changed and implemented without departing from the technical idea . In each of the drawings shown below, the same parts are denoted by the same reference numerals, and some detailed explanation may be omitted. Also, the numerical values such as the dimensions of each member described in this specification and the material names are examples as embodiments, and are not limited thereto, and can be appropriately selected and used. In this specification, terms specifying shapes and geometric conditions, such as terms such as parallel, orthogonal, and perpendicular, in addition to their strict meanings, substantially the same shall also include the state.

[0019] In addition, in the following embodiments, the "X direction" is parallel to the longitudinal direction of the transport cart and parallel to the floor surface on which the transport cart is placed. The "Y direction" is perpendicular to the X direction and parallel to the floor surface on which the transport cart is placed. The "Z direction" is parallel to the vertical direction. Also, the "front" refers to a plane perpendicular to the floor surface and facing the direction in which another transport cart enters when nesting. The "rear" refers to a plane perpendicular to the floor surface and opposite to the front. The "top surface" refers to a plane parallel to the floor surface and on the upper side of the transport cart. The "bottom surface" refers to a plane parallel to the floor surface and on the lower side of the transport cart. The " side surface" refers to a plane perpendicular to the floor surface and on the longitudinal end side of the transport cart.

[0020] (Configuration of the transport cart) The configuration of the transport cart according to this embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view of the transport cart according to this embodiment in the deployed state. FIG. 2 is a perspective view showing the transport cart according to this embodiment in which only the front panel is in the folded state. FIG. 3 is a perspective view of the transport cart according to this embodiment in the folded state. FIG. 4 is a perspective view of the cart body. FIG. 5 is a partially enlarged front view of the cart body. Note that when the transport cart is "in the deployed state", it means that each heat insulation panel of the transport cart is expanded, each heat insulation panel is assembled into a box shape, and a heat insulation space is formed between the plurality of heat insulation panels. Also, when the transport cart is "in the folded state", it means that each heat insulation panel of the transport cart is folded and no heat insulation space is formed within the plurality of heat insulation panels. ​ refers to the state.

[0021] As shown in FIGS. 1 to 3, the transport cart 10 according to the present embodiment includes a cart body (cart) 50 and a plurality (six in this case) of heat insulating panels 11 to 16 that are respectively provided on the cart body 50 so as to be deployable and foldable. Among these, the plurality of heat insulating panels 11 to 16 can take a deployed state (see FIG. 1) in which they are deployed and assembled into a box shape, and a folded state (see FIG. 3) in which they can be nested with other transport carts by being folded .

[0022] The transport cart 10 is used, for example, in a store, factory, logistics process, etc., when storing or transporting a load that requires cold insulation or heat insulation. Such a transport cart 10 is configured such that a storage space 20 capable of storing a load is surrounded by six heat insulating panels 11 to 16 so that the temperature change inside the transport cart 10 is suppressed as much as possible. On the other hand, when the transport cart 10 is not in use, it can be nested with other identical transport carts 10 (by overlapping a part of the transport cart 10 on another transport cart 10 adjacent in the horizontal direction) so that a plurality of transport carts 10 can be stored compactly.

[0023] Next, with reference to FIG. 4, the configuration of the cart body (cart) 50 according to the present embodiment will be described . As shown in FIG. 4, the cart body 50 has a first side frame 51, a second side frame 52, and a connecting member 53 that connects the first side frame 51 and the second side frame 52 to each other. In this case, the cart body 50 has six wheels 61 to 66, and the wheels 61 to 66 are respectively attached downward from the connecting member 53 .

[0024] The first side frame 51 is provided at one end in the longitudinal direction of the carriage body 50 (the end on the negative side in the X direction). The first side frame 53 projects upward (toward the positive side in the Z direction) from the connecting member 53. 51 is formed in a ladder shape and has a pair of vertical bars 55 extending in the vertical direction (Z direction) and a pair of Between the vertical rods 55, there are a plurality of horizontal bars 56 each extending in the horizontal direction (Y direction). The horizontal bars 56 are arranged at equal intervals in the vertical direction (Z direction). However, the first side frame 14 may be arranged at uneven intervals. Below 51, two wheels 61 and 62 are provided.

[0025] The pair of vertical rods 55 are not directly connected to the wheel mounting frame 67 (described later). This allows the central frame 67 of the other transport carts 10 to be separated from each other during nesting. The frame 57 is designed not to interfere with the vertical rod 55. A curved portion 55a is formed at the lower portion of the rod 55. The vertical rod 55 on the side of the lowermost part is perpendicular to the horizontal rail 56 located at the lowermost part. The horizontal crosspiece 56 is connected to the wheel mounting frame 67 by a square tubular central connecting rod 54. However, this is not limited to the above, and one of the vertical rods 55 (Y direction minus side) may be connected to the wheel mounting frame 6 It may be directly linked to 7.

[0026] The second side frame 52 is provided at the other end in the longitudinal direction (the positive end in the X direction) of the carriage body 50. The second side frame 5 protrudes upward (toward the positive side in the Z direction) from the connecting member 53. The configuration of the second side frame 51 is substantially the same as the configuration of the first side frame 51 described above, and is point-to-point with the first side frame 51 in a plan view. It is configured and arranged to be called. Below the second side frame 52, two-wheel wheels 65, 6 6 are provided.

[0027] The connecting member 53 is substantially in the shape of a king character in plan view (a shape formed by putting two "E" characters back to back), and has a central frame 57 extending in the longitudinal direction (X direction) of the carriage body 50, and three wheel mounting frames 67 to 69 respectively connected to the central frame 57.

[0028] The central frame 57 is located substantially at the center in the width direction (Y direction) of the carriage body 50. This central frame 57 has sufficient strength to hold the load of the transport cart 10 and its load, while having a narrow width that does not interfere with nesting of the transport carts 10. Note that, so as not to interfere with the wheel mounting frames 67 to 6 9 of other transport carts 10 during nesting, the central frame 57 is provided at a position higher than the wheel mounting frames 67 to 69.

[0029] The three wheel mounting frames 67 to 69 each extend in a direction (Y direction) perpendicular to the central frame 57. These wheel mounting frames 67 to 69 include a first wheel mounting frame 67 located on the first side frame 51 side, a second wheel mounting frame 68 located between the first side frame 51 and the second side frame 52, and a third wheel mounting frame 69 located on the second side frame 52 side.

[0030] The first wheel mounting frame 67 and the second wheel mounting frame 68 are arranged at intervals in the longitudinal direction (X direction) of the carriage body 50. Also, the second wheel mounting frame 68 and the third wheel mounting frame 69 are arranged at intervals in the longitudinal direction (X direction) of the carriage body 50. In this case, the distance between the first wheel mounting frame 67 and the second wheel mounting frame 68 may be equal to or different from the distance between the second wheel mounting frame 68 and the third wheel mounting frame 69.

[0031] The first wheel mounting frame 67 is provided at one longitudinal end (the minus X-direction end) of the central frame 57. The first wheel 61 and the second wheel 62 are respectively mounted at both longitudinal ends (both Y-direction ends) of the first wheel mounting frame 67.

[0032] The second wheel mounting frame 68 is provided at the central portion (the central X-direction portion) of the central frame 57. The third wheel 63 and the fourth wheel 64 are respectively mounted at both longitudinal ends (both Y-direction ends) of the second wheel mounting frame 68. The width (the length in the X direction) of the second wheel mounting frame 6 8 is made thin enough not to interfere when nesting the transport carts 10 with each other.

[0033] The third wheel mounting frame 69 is provided at the other longitudinal end (the plus X-direction end) of the central frame 57. The fifth wheel 65 and the sixth wheel 66 are respectively mounted at both longitudinal ends (both Y-direction ends) of the third wheel mounting frame 69.

[0034] As described above, the wheels 61 to 66 are composed of the first wheel 61, the second wheel 62, the third wheel 63, the fourth wheel 64, the fifth wheel 65 and the sixth wheel 66. Among these, the first wheel 6 1, the second wheel 62, the fifth wheel 65 and the sixth wheel 66 are free wheels, and each rotates along a horizontal axle and turns by a turning axis extending in the vertical direction (Z direction). ​​​​​is possible. On the other hand, the third wheel 63 and the fourth wheel 64 are fixed wheels, and while they rotate along a horizontal axle, they cannot swivel around an axis in the vertical direction (Z direction). While rotating along a horizontal axle respectively, they cannot swivel around an axis in the vertical direction (Z direction).

[0035] In addition, when loading a load on the transport cart 10 and driving, in order to be able to drive straight stably, the central fixed wheels (the third wheel 63 and the fourth wheel 64) and either the front or rear one of the free wheels (the first wheel 61 and the second wheel 62, or the fifth wheel 65 and the sixth wheel 66) can be combined so that two of them are in contact with the ground. Also, when no load is placed on the transport cart 10, in order to make it easier to turn and nest and to have better maneuverability, without grounding the central fixed wheels (the third wheel 63 and the fourth wheel 64), only the front and rear free wheels ( the first wheel 61, the second wheel 62, the fifth wheel 65 and the sixth wheel 66) can be grounded. Note that this is not the only way, and the cart body 50 may have four wheels 61, 62, 65, 6 6 and not have the second wheel mounting frame 68 and the third wheel 63 and the fourth wheel 64.

[0036] Also, a foldable bottom plate 58 is provided on the connecting member 53. This bottom plate 58 is substantially rectangular parallelepiped-shaped and extends between the first side frame 51 and the second side frame 52 in the longitudinal direction (X direction), and has substantially the same length as the first side frame 51 and the second side frame 52 in the short side direction (Y direction). Also, the bottom plate 58 has sufficient strength to hold the load of the load on the transport cart 10.

[0037] The bottom plate 58 is movable relative to the connecting member 53 and is deployed on the connecting member 53. ​​​​​​​a state (see FIGS. 1, 2, and 4), and a folded state (see FIG. 3) in which it is lifted with respect to the connecting member 53 and folded around the second side frame 5 2 can be taken. That is, the heat insulating panels 11 to 16 are deployed and assembled into a box shape (see FIGS. 1, 2, and 4 ). When taking the deployed state, the bottom plate 58 is arranged in a horizontal deployed state. On the other hand, when folding the plurality of heat insulating panels 11 ~16 to take the folded state (see FIG. 3), the bottom plate 58 is lifted vertically and arranged in the folded state.

[0038] As shown in FIG. 5, the bottom plate 58 is rotatable about a fulcrum portion 58a provided inside the central connecting rod 54 and the vertical rod 55 (on the negative X direction side). This fulcrum portion 58a is located below (on the negative Z direction side) the bottom panel 16 (described later). In this case , the entire connecting portion (fulcrum portion 58a) that connects the bottom plate 58 and the central connecting rod 54 or the vertical rod 55 is located outside the heat insulating panels 11 to 16. As a result, the connecting portion is not arranged across the accommodation space 20 ( described later) and the outside air, and it is possible to prevent the connecting portion from becoming a heat bridge and reducing the heat insulation property of the accommodation space 20. Also, when moving the bottom plate 58 between the folded state and the deployed state, there is no risk that the connecting portion (fulcrum portion 58a) will interfere with the heat insulating panels 11 to 16. 16.

[0039] (Configuration of heat insulating panel) Next, with reference to FIGS. 1 to 3, the configuration of the heat insulating panels 11 to 16 will be described.

[0040] The heat insulating panels 11 to 16 are provided so as to be deployable and foldable with respect to the cart body 50 as a whole, and as described above, in the deployed state (FIG. 1) in which they are deployed and assembled into a box shape, and the net ​​It can take a foldable state (Figure 3) that can be stung. Also, Figure 2 shows the case where only the front panel 12 out of the heat insulation panels 11 to 16 is in the folded state.

[0041] As shown in Figure 1, the heat insulation panels 11 to 16 are in a substantially rectangular parallelepiped shape in the unfolded state, and include a top panel 11, a front panel 12, a rear panel 13, a first side panel 1 4, a second side panel 15, and a bottom panel 16. The heat insulation panels 11 to 16 each have their main surfaces (a pair of the widest and opposite-facing surfaces among the six surfaces constituting each heat insulation panel) in a substantially rectangular shape. Also, the front panel 12 and the rear panel 13 have their main surfaces having substantially the same size as each other, and the first side panel 1 4 and the second side panel 15 have their main surfaces having substantially the same size as each other. Each heat insulation panel 11 to 16 is made of a rigid plate-like member and is configured not to deform flexibly during use. In the unfolded state, by being surrounded by the six heat insulation panels 11 to 16, it is possible to form a storage space 20 for storing the loaded goods. When these heat insulation panels 11 to 16 are in the unfolded state, a substantially rectangular parallelepiped-shaped storage space 20 is formed between the heat insulation panels 11 to 16.

[0042] The storage space 20 can limit the inflow and outflow of heat to and from the outside and can maintain heat insulation. Also, at least a part of the six heat insulation panels 11 to 16 are movably provided with respect to the other adjacent heat insulation panels 11 to 16. Thereby, the transport cart 10 can be changed from the unfolded state in which the storage space 20 is formed to the folded state in which the storage space 20 is not formed. The storage space 20 can limit the inflow and outflow of heat to and from the outside and can maintain heat insulation. Also, at least a part of the six heat insulation panels 11 to 16 are movably provided with respect to the other adjacent heat insulation panels 11 to 16. Thereby, the transport cart 10 can be changed from the unfolded state in which the storage space 20 is formed to the folded state in which the storage space 20 is not formed. from the unfolded state in which the storage space 20 is formed to the folded state in which the storage space 20 is not formed. It is possible to change it to and change it from the folded state to the unfolded state. Therefore, when the transport cart 10 is not used, the heat insulation panels 11 to 16 are in the folded state so that they can be nested with other transport carts 10. Also, in the unfolded state the six heat insulation panels 11 to 16 are each in close contact with the periphery of any other heat insulation panel 11 to 16, thereby ensuring the airtightness of the accommodation space 20.

[0043] As will be described later, each of the six heat insulation panels 11 to 16 has a heat insulation part 40 containing a vacuum heat insulating material 41 (see FIG. 8). In this embodiment, the six heat insulation panels 11 to 16 each contain a vacuum heat insulating material 41, but are not limited thereto. Some or all of the heat insulation panels 11 to 16 may contain a heat insulating material such as a foamed heat insulating material.

[0044] Next, the configuration of each of the heat insulation panels 11 to 16 will be further described. Hereinafter, "the heat insulation panels 11 to 16 (partial panels) are parallel (perpendicular) to a predetermined plane" means that "the main surface of the heat insulation panels 11 to 16 (partial panels) is parallel (perpendicular ) to the predetermined plane".

[0045] (Top panel) The top panel 11 is a heat insulation panel located on the top surface side (Z - direction positive side) in the unfolded state (FIG. 1) and is arranged parallel to the horizontal plane (XY plane). Also, in the unfolded state the top panel 11 is arranged above the first side frame 51 and the second side frame 52 of the cart body 50, the first side panel 14, and the front panel 12. Also, the top panel 11 is above the rear panel ​It is arranged on the front side (minus Y direction) of the roof 13 and on the first side side (minus X direction) of the second side panel 15.

[0046] This top panel 11 has a partially openable structure and is located on the first side frame 51 side of the first top panel part 11a and is located on the second side frame 52 side and is larger than the first top panel part 1 1a of the second top panel part 11b. Among these, the first top panel part pa nel 11a is foldably attached to the first side panel 14. Also, the second top panel part 11b is foldably attached to the first top panel part 11a and is attached.

[0047] The first top panel part 11a and the second top panel part 11b are both arranged horizontally (parallel to the XY plane) in the unfolded state (Figure 1). On the other hand, in the folded state (Figure 3) the first top panel part 11a is arranged horizontally while the second top panel part 11b is folded downward and arranged so as to hang down from the first top panel part 11a. At this time, the second top panel part 11b is arranged inside the periphery of the first side frame 51 and is parallel to the YZ plane and becomes parallel.

[0048] (Front panel) The front panel 12 is, in the unfolded state (Figure 1), below the top panel 11 and above the bottom panel nel 16, and is located on the front side (minus Y direction) of the back panel 13 and is a heat insulation panel arranged perpendicular to the horizontal plane (XY plane) (parallel to the ZX plane) and is arranged. Also, in the unfolded state, the front panel 12 is arranged between the first side panel 14 and the second side panel 15.

[0049] ​ This front panel 12 has a foldable structure and includes a first front panel portion 12a located on the side of the first side frame 51, a second front panel portion 12b located in the middle, and a third front panel portion 12c located on the side of the second side frame 52. Among these, the first front panel portion 12a is foldably attached to the first side panel 14. Also, the second front panel portion 12b is foldably attached to the first front panel portion 12a. Furthermore, the third front panel portion 12c is foldably attached to the second front panel portion 12b.

[0050] The first front panel portion 12a, the second front panel portion 12b, and the third front panel portion 12c are all arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane) in the unfolded state (Figure 1). On the other hand, in the folded state (Figure 3), the first front panel portion 12a is located on the front side (minus Y direction side) of the first side panel 14. Also, the second front panel portion 12b and the third front panel portion 12c are folded so as to overlap each other, and further rotate around the vertical axis (Z direction axis) and are arranged on the outside (minus X direction side) of the first side panel 14. At this time, the second front panel portion 12b and the third front panel portion 12c are folded and overlapped and arranged around the outside of the first side frame 51, becoming parallel to the YZ plane.

[0051] In this way, in the folded state, by arranging the second front panel portion 12b and the third front panel portion 12c outside (minus X direction side) of the first side frame 51, a wide accommodation space 20 for accommodating the loaded items can be secured. Also, the bottom plate 58 is held on the side of the second side frame 52. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51. When lifting, it prevents the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c from interfering with the moving bottom plate 58. Note that the width (length in the X direction) of the first front partial panel 12a is shorter than the widths (lengths in the X direction) of the second front partial panel 12b and the third front partial panel 12c, and the width (length in the X direction) of the second front partial panel 12b is substantially the same as the width (length in the X direction) of the third front partial panel 12c. Also, the widths of the second front partial panel 12b and the third front partial panel 12c are substantially the same as the width (length in the Y direction) of the first side frame 51, or longer than the width of the first side frame 51.

[0052] (Rear panel) The rear panel 13 is a heat insulation panel located on the rear side (Y - direction plus side) of the top panel 11, the front panel 12, the first side panel 14, the second side panel 15, and the bottom panel 16 in the unfolded state (Figure 1), and is arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane). The rear panel 13 is a heat insulation panel located on the rear side (Y - direction plus side) of the top panel 11, the front panel 12, the first side panel 14, the second side panel 15, and the bottom panel 16 in the unfolded state (Figure 1), and is arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane). The rear panel 13 is a heat insulation panel located on the rear side (Y - direction plus side) of the top panel 11, the front panel 12, the first side panel 14, the second side panel 15, and the bottom panel 16 in the unfolded state (Figure 1), and is arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane). The rear panel 13 is a heat insulation panel located on the rear side (Y - direction plus side) of the top panel 11, the front panel 12, the first side panel 14, the second side panel 15, and the bottom panel 16 in the unfolded state (Figure 1), and is arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane).

[0053] This rear panel 13 has a foldable structure and has a first rear partial panel 13a located on the first side frame 51 side and a second rear partial panel 13b located on the second side frame 52 side. Among these, the second rear partial panel 13b is foldably attached to the first rear partial panel 13a. Also, the first rear partial panel 13a is fixed to the first side panel 14. This rear panel 13 has a foldable structure and has a first rear partial panel 13a located on the first side frame 51 side and a second rear partial panel 13b located on the second side frame 52 side. Among these, the second rear partial panel 13b is foldably attached to the first rear partial panel 13a. Also, the first rear partial panel 13a is fixed to the first side panel 14. This rear panel 13 has a foldable structure and has a first rear partial panel 13a located on the first side frame 51 side and a second rear partial panel 13b located on the second side frame 52 side. Among these, the second rear partial panel 13b is foldably attached to the first rear partial panel 13a. Also, the first rear partial panel 13a is fixed to the first side panel 14. This rear panel 13 has a foldable structure and has a first rear partial panel 13a located on the first side frame 51 side and a second rear partial panel 13b located on the second side frame 52 side. Among these, the second rear partial panel 13b is foldably attached to the first rear partial panel 13a. Also, the first rear partial panel 13a is fixed to the first side panel 14. This rear panel 13 has a foldable structure and has a first rear partial panel 13a located on the first side frame 51 side and a second rear partial panel 13b located on the second side frame 52 side. Among these, the second rear partial panel 13b is foldably attached to the first rear partial panel 13a. Also, the first rear partial panel 13a is fixed to the first side panel 14.

[0054] The first rear partial panel 13a and the second rear partial panel 13b are both arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane) in the unfolded state (Figure 1). On the other hand, when folded, The first rear partial panel 13a and the second rear partial panel 13b are both arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane) in the unfolded state (Figure 1). On the other hand, when folded, In the folded state (Figure 3), the second rear portion panel 13b is folded so as to overlap the first rear portion panel 13 a and is disposed outside (on the plus side in the Y direction) of the first rear portion panel 13a . At this time, the first rear portion panel 13a remains on the rear side without being folded . That is, the first rear portion panel 13a is in the same position as in the unfolded state even in the folded state and is disposed perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane). Also , the first rear portion panel 13a and the second rear portion panel 13b are folded and disposed perpendicular to the first side frame 5 1 and are parallel to the ZX plane. Thus, in the folded state , by removing the second rear portion panel 13b, the rear panel 13 is opened . The opened portion of this rear panel 13 has a predetermined width in the horizontal direction (X direction) (Figure 3 ). Note that depending on the folding method of the first rear portion panel 13a and the second rear portion panel 13b , the rear panel 13 may be opened over the entire horizontal direction (X direction) .

[0055] (First side panel) The first side panel 14 is a heat insulation panel located on the first side frame 51 side (minus side in the X direction) in both the unfolded state (Figure 1) and the folded state (Figure 3) and is disposed perpendicular (parallel to the YZ plane) to the horizontal plane (XY plane). This first side panel 14 is composed of a single plate-like member. Also, the first side panel 14 is disposed around the outer periphery of the first side frame 51 of the cart body 50 without moving in both the unfolded state (Figure 1) and the folded state (Figure 3) and is parallel to the YZ plane. The first side panel 14 is sized to cover the entire outer side of the first side frame 51 .

[0056] ​​(Second Side Panel) The second side panel 15 is in both the deployed state (Figure 1) and the folded state (Figure 3) a heat insulation panel located on the second side frame 52 side (X-direction plus side), and is in the horizontal plane (XY plane) perpendicular to (parallel to the YZ plane). This second side panel 15 is a single plate-shaped member. Also, the second side panel 15 is, in both the deployed state (Figure 1) and the folded state (Figure 3), without moving, is arranged around the outside of the second side frame 52 of the cart body 50 and is parallel to the YZ plane. The second side panel 15 is sized to cover the entire outside of the second side frame 52 .

[0057] (Bottom Panel) The bottom panel 16 is, in the deployed state (Figure 1), a heat insulation panel located on the bottom side (Z-direction minus side), and is arranged parallel to the horizontal plane (XY plane). Also, in the deployed state , the bottom panel 16 is on the bottom plate 58 of the cart body 50 and is arranged between the first side frame 51 and the second side frame 52. The bottom panel 16 is composed of a single plate-shaped member and has a structure that can be folded by lifting . This bottom panel 16 is foldably attached to the first side frame 51 .

[0058] The bottom panel 16 is arranged parallel to the horizontal plane (XY plane) in the deployed state (Figure 1). On the other hand, in the folded state (Figure 3), the bottom panel 16 is folded so as to overlap the inside (X-direction plus side) of the first side frame 51 and is located around the inside of the first side frame 51 . That is, in the folded state, the bottom panel 16 is arranged perpendicular to the horizontal plane (XY plane) (parallel to the YZ plane). At this time, the bottom panel 16 is, for example, a surface fa not shown in the figure (end) ​It is detachably attached to the first side frame 51 via a snare.

[0059] Figure 3 shows the case where the heat insulation panels 11 to 16 are in a folded state. As shown in Figure 3, in the folded state, at least a part of each of the heat insulation panels 11 to 16 is folded around the first side frame 51 or the second side frame 52.

[0060] That is, around the first side frame 51, in order from the outside (the minus side in the X direction), the second front partial panel 12b, the third front partial panel 12c, the first side panel 14, the bottom panel 1 6, and the second top partial panel 11b overlap. Note that the first side frame 51 is located between the first side panel 14 and the bottom panel 16. Also, around the second side frame 52, in order from the outside (the plus side in the X direction), the second side panel 15 and the bottom plate 58 overlap. Note that the second side frame 52 is located between the second side panel 15 and the bottom plate 58.

[0061] In this case, a first panel group G1 and a second panel group G2 are respectively formed around the first side frame 51 and the second side frame 52. Among these, the first panel group G1 is composed of the second front partial panel 12b, the third front partial panel 12c, the first side panel 14, the first side frame 51, the bottom panel 16, and the second top partial panel 11b. Also, the second panel group G2 is composed of the second side panel 15, the second side frame 52, and the bottom plate 58. Note that in this embodiment, the first panel group G1 (the second panel group G2) includes not only all or part of the heat insulation panels 11 to 16, but also the first side frame 51 (the second side frame 52) and the bottom plate 58. In addition, in this embodiment, the first panel group G1 (the second panel group G2) includes not only all or part of each of the heat insulation panels 11 to 16, but also the first side frame 51 (the second side frame 52) and the bottom plate 58. are included.

[0062] The thickness of each of the heat insulation panels 11 to 16 is, for example, 5 mm or more and 50 mm or less. This is preferable. In the present embodiment, an example will be described in which the thicknesses of the heat insulation panels 11 to 16 are the same as each other, but the thicknesses of the heat insulation panels 11 to 16 may be different from each other. Also, the thickness (length in the X direction) of the first side frame 51 and the second side frame 52 is, for example, 10 mm or more and 50 mm or less.

[0063] (Configuration of the upper shelf board) Next, with reference to FIG. 2, the configuration of the upper shelf board 71 attached to the cart body 50 will be described. Explanation.

[0064] As shown in FIG. 2, an upper shelf board 71 having a substantially rectangular shape in plan view is detachably arranged on the upper part of the cart body 50. This upper shelf board 71 is composed of a flat plate-like member and is bridged between the first side frame 51 and the second side frame 52. In this case, the upper shelf board 71 is detachably attached to the first side frame 51 and the second side frame 52. Specifically, one end (the end on the minus side in the X direction) of the upper shelf board 71 is detachably engaged with the horizontal bar 56 of the first side frame 51, and the upper shelf board 71's other end (the end on the plus side in the X direction) is detachably engaged with the horizontal bar 56 of the second side frame 52. is engaged.

[0065] This upper shelf board 71 is located above the upper part of the cart body 50 as described above, and above the 1 / 3 in the height direction (Z direction) of the first side frame 51 and the second side frame 52. That is, in FIG. 2, when the height of the first side frame 51 and the second side frame 52 is H a When set, the upper shelf board The height direction (Z direction) distance H between 71 and the upper ends of the first side frame 51 and the second side frame 52 b is H b <1 / 3 × H​​​​a satisfies such a relationship. In this way, by arranging the upper shelf board 71 above 1 / 3 of the height direction of the first side frame 51 and the second side frame 52, the upper parts of the first side frame 51 and the second side frame 52 are fixed. For this reason, the verticality of the first side frame 51 and the second side frame 52 is less likely to wobble, and the variation in the distance between the first side frame 51 and the second side frame 52 is suppressed. Thereby, the decrease in the fitting property between the heat insulation panels 11 to 16 is suppressed, and the airtightness of the accommodation space 20 can be maintained. and the second side frame 52, the upper parts of the first side frame 51 and the second side frame 52 are fixed. For this reason, the verticality of the first side frame 51 and the second side frame 52 is less likely to wobble, and the variation in the distance between the first side frame 51 and the second side frame 52 is suppressed. and the second side frame 52, the upper parts of the first side frame 51 and the second side frame 52 are fixed. For this reason, the verticality of the first side frame 51 and the second side frame 52 is less likely to wobble, and the variation in the distance between the first side frame 51 and the second side frame 52 is suppressed. Thereby, the decrease in the fitting property between the heat insulation panels 11 to 16 is suppressed, and the airtightness of the accommodation space 20 can be maintained. Thereby, the decrease in the fitting property between the heat insulation panels 11 to 16 is suppressed, and the airtightness of the accommodation space 20 can be maintained. Thereby, the decrease in the fitting property between the heat insulation panels 11 to 16 is suppressed, and the airtightness of the accommodation space 20 can be maintained.

[0066] In addition, a cold storage agent 72 is arranged on the upper shelf board 71. This cold storage agent 72 may be directly arranged on the upper shelf board 71, or may be accommodated in a case arranged on the upper shelf board 71. By arranging the cold storage agent 72 on the upper part of the cart body 50 in this way, the cold air from the cold storage agent 72 descends and is sent to the loaded goods, and the cold storage property of the accommodation space 20 is enhanced. For this reason, it is preferable that there is a space between the upper shelf board 71 and the top panel 11 that can accommodate the cold storage agent 72 in the vertical direction (Z direction). In addition, a cold storage agent 72 is arranged on the upper shelf board 71. This cold storage agent 72 may be directly arranged on the upper shelf board 71, or may be accommodated in a case arranged on the upper shelf board 71. By arranging the cold storage agent 72 on the upper part of the cart body 50 in this way, the cold air from the cold storage agent 72 descends and is sent to the loaded goods, and the cold storage property of the accommodation space 20 is enhanced. For this reason, it is preferable that there is a space between the upper shelf board 71 and the top panel 11 that can accommodate the cold storage agent 72 in the vertical direction (Z direction). In addition, a cold storage agent 72 is arranged on the upper shelf board 71. This cold storage agent 72 may be directly arranged on the upper shelf board 71, or may be accommodated in a case arranged on the upper shelf board 71. By arranging the cold storage agent 72 on the upper part of the cart body 50 in this way, the cold air from the cold storage agent 72 descends and is sent to the loaded goods, and the cold storage property of the accommodation space 20 is enhanced. For this reason, it is preferable that there is a space between the upper shelf board 71 and the top panel 11 that can accommodate the cold storage agent 72 in the vertical direction (Z direction).

[0067] In addition, a cold storage agent 72 is arranged on the upper shelf board 71. This cold storage agent 72 may be directly arranged on the upper shelf board 71, or may be accommodated in a case arranged on the upper shelf board 71. By arranging the cold storage agent 72 on the upper part of the cart body 50 in this way, the cold air from the cold storage agent 72 descends and is sent to the loaded goods, and the cold storage property of the accommodation space 20 is enhanced. For this reason, it is preferable that there is a space between the upper shelf board 71 and the top panel 11 that can accommodate the cold storage agent 72 in the vertical direction (Z direction). As shown in FIG. 2, a middle shelf board 73 is detachably arranged below the upper shelf board 71. Loaded goods such as food are placed on this middle shelf board 73. The middle shelf board 73 is composed of a flat plate-shaped member having a substantially rectangular shape in plan view, and is spanned between the first side frame 51 and the second side frame 52. Note that the middle shelf board 73 may have the same configuration as the upper shelf board 71. As shown in FIG. 2, a middle shelf board 73 is detachably arranged below the upper shelf board 71. Loaded goods such as food are placed on this middle shelf board 73. The middle shelf board 73 is composed of a flat plate-shaped member having a substantially rectangular shape in plan view, and is spanned between the first side frame 51 and the second side frame 52. Note that the middle shelf board 73 may have the same configuration as the upper shelf board 71. As shown in FIG. 2, a middle shelf board 73 is detachably arranged below the upper shelf board 71. Loaded goods such as food are placed on this middle shelf board 73. The middle shelf board 73 is composed of a flat plate-shaped member having a substantially rectangular shape in plan view, and is spanned between the first side frame 51 and the second side frame 52. Note that the middle shelf board 73 may have the same configuration as the upper shelf board 71. In this case, the middle shelf board 73 and the upper shelf board 71 can be shared. Note that a plurality of middle shelf boards 73 may be arranged. In this case, the middle shelf board 73 and the upper shelf board 71 can be shared. Note that a plurality of middle shelf boards 73 may be arranged.

[0068] In this case, the middle shelf board 73 and the upper shelf board 71 can be shared. Note that a plurality of middle shelf boards 73 may be arranged.

[0068] Figs. 6(a)-(d) show various attachment structures between the upper shelf board 71, the first side frame 51, and the second side frame 52. It is a schematic diagram showing the structure.

[0069] As shown in Fig. 6(a), at least a pair of protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and the first side frame 51 and the second side frame 52 can be supported from the outside by engaging the pair of protrusions 74 with the outside (the side opposite to the accommodation space 20) of the cross bar 56. By engaging the pair of protrusions 74 with the outside (the side opposite to the accommodation space 20) of the cross bar 56, the first side frame 51 and the second side frame 52 can be supported from the outside. In this way, especially when pulling the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. With such a configuration, especially when pulling the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. When pulling the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. The upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. It is also possible to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52.

[0070] As shown in Fig. 6(b), at least a pair of protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and the first side frame 51 and the second side frame 52 can be supported from the inside by engaging the pair of protrusions 74 with the inside (the side of the accommodation space 20) of the cross bar 56. By engaging the pair of protrusions 74 with the inside (the side of the accommodation space 20) of the cross bar 56, the first side frame 51 and the second side frame 52 can be supported from the inside. In this way, especially when pushing the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. With such a configuration, especially when pushing the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. When pushing the first side frame 51 (the first side panel 14) or the second side frame 52 (the second side panel 15) during the movement of the transport cart 10, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed. Although not shown, the upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. The upper shelf board 71 can be brought into contact with the first side panel 14 and the second side panel 15 to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52. It is also possible to suppress the displacement between the upper shelf board 71 and the first side frame 51 and the second side frame 52.

[0071] In addition, when providing the intermediate shelf board 73 (see Fig. 2), one of the upper shelf board 71 and the intermediate shelf board 73 supports the first side frame 51 and the second side frame 52 from the outside (Fig. 6(a)), and the other may support the first side frame 51 and the second side frame 52 from the inside (Fig. 6(b)). In this case, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(c), at least four protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by engaging these four protrusions 74 with the inside and the outside of the cross bar 56, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. Figs. 7(a)-(c) are schematic perspective views showing various modified examples of the upper shelf board 71. As shown in Fig. 7(a), a plurality of through holes 76 such as a mesh or a non-woven fabric may be formed in the upper shelf board 71. Also, as shown in Fig. 7(b), the upper shelf board 71 may have regular

[0072] As shown in Fig. 6(c), at least four protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by engaging these four protrusions 74 with the inside and the outside of the cross bar 56, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(c), at least four protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by engaging these four protrusions 74 with the inside and the outside of the cross bar 56, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(c), at least four protrusions 74 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by engaging these four protrusions 74 with the inside and the outside of the cross bar 56, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52.

[0073] As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52. As shown in Fig. 6(d), at least a pair of recesses 75 are provided on the bottom surface (the surface on the minus side in the Z direction) of the upper shelf board 71, and by accommodating the cross bar 56 in each of these pair of recesses 75, the first side frame 51 and the second side frame 52 may be supported from both the inside and the outside. With such a configuration, it is possible to suppress fluctuations in the intervals between the inside and the outside of the first side frame 51 and the second side frame 52.

[0074] Figs. 7(a)-(c) are schematic perspective views showing various modified examples of the upper shelf board 71.

[0075] As shown in Fig. 7(a), a plurality of through holes 76 such as a mesh or a non-woven fabric may be formed in the upper shelf board 71. Also, as shown in Fig. 7(b), the upper shelf board 71 may have regular As shown in Fig. 7(a), a plurality of through holes 76 such as a mesh or a non-woven fabric may be formed in the upper shelf board 71. Also, as shown in Fig. 7(b), the upper shelf board 71 may have regular Alternatively, a plurality of through-holes 77 that open irregularly may be formed. In FIG. 7(b), the through-hole 77 is square in plan view, but is not limited to this, and may be circular or polygonal such as hexagonal in shape. Thus, by providing the through-holes 76 and 77 in the upper shelf plate 71, the cold air from the cold insulating agent 72 (see FIG. 2) can be efficiently lowered, and the warm air from the loaded goods can be efficiently raised.

[0076] Also, as shown in FIG. 7(c), one or more grooves 78 may be formed on the upper surface (the surface on the +Z direction side) of the upper shelf plate 71. In this case, the groove 78 extends over the entire longitudinal direction ( X direction) of the upper shelf plate 71. Thereby, the water droplets condensed on the upper shelf plate 71 can be drained to the ends of the upper shelf plate 71 (near the first side frame 51 and the second side frame 52), and it is possible to prevent the water droplets from dripping onto the loaded goods. In FIG. 7(c), the through-hole 77 does not necessarily have to be formed. X direction) of the upper shelf plate 71. Thereby, the water droplets condensed on the upper shelf plate 71 can be drained to the ends of the upper shelf plate 71 (near the first side frame 51 and the second side frame 52), and it is possible to prevent the water droplets from dripping onto the loaded goods. In FIG. 7(c), the through-hole 77 does not necessarily have to be formed. shelf plate 71's ends (near the first side frame 51 and the second side frame 52), and it is possible to make it difficult for water droplets to drip onto the loaded goods. Note that in FIG. 7(c), the through-hole 77 does not necessarily have to be formed. opposite to the loaded goods can be made difficult to drip. In FIG. 7(c), the through-hole 77 does not necessarily have to be formed. not necessarily have to be formed.

[0077] Although not shown, the upper shelf plate 71 may be covered with a member such as a non-woven fabric that can store water and has air permeability. Also, the intermediate shelf plate 73 (see FIG. 2) may also have various structures shown in FIGS. 7(a) -(c). -(c).

[0078] (Internal Structure of the Heat Insulating Panel) Next, the structures of the heat insulating panels 11 to 16 will be described. FIG. 8 is a cross-sectional view showing the heat insulating portions 40 of the heat insulating panels 11 to 16. FIGS. 9(a) and (b) are cross-sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40.

[0079] As shown in FIG. 8, the heat insulating portions 40 of the heat insulating panels 11 to 16 include a vacuum heat insulating material 41 and a foam It has a heat insulating material 42, a heat insulating outer periphery 43, a heat insulating material protection member 44, and a heat shielding sheet 45. It does.

[0080] Among these, the vacuum heat insulating material 41 is attached to the foamed heat insulating material 42. This vacuum heat insulating material 4 1 is composed of a core material 41a and an exterior material 41b provided around the core material 41a. On the side of the accommodation space 20 (the lower side in FIG. 8) of the vacuum heat insulating material 41, the foamed heat insulating material 42 is arranged. Thereby, when the load placed in the accommodation space 20 collides, the risk of damage to the vacuum heat insulating material 41 can be reduced. It can be reduced.

[0081] The foamed heat insulating material 42 can be arranged adjacent to at least the side of the accommodation space 20 of the vacuum heat insulating material 41. For the foamed heat insulating material 42, a known foamed heat insulating material can be used, for example, one or both of a polyurethane foam and a polystyrene foam. It may be.

[0082] The heat insulating outer periphery 43 is formed so as to surround the vacuum heat insulating material 41. This heat insulating outer periphery 43 is arranged on the foamed heat insulating material 42 and fixed to the foamed heat insulating material 42. Since the heat insulating outer periphery 43 is arranged so as to surround the vacuum heat insulating material 41, the heat insulating performance is improved as compared with the case where the heat insulating outer periphery 43 is not arranged. Also, the vacuum heat insulating material 41 can have substantially the same area as the foamed heat insulating material 42, and a panel configuration without using the heat insulating outer periphery 43 is also possible. In this case, the heat insulating performance can be further improved, but since there is no heat insulating outer periphery 43, there is a risk of being vulnerable to the breakage of the vacuum heat insulating material 41 due to the intrusion of sharp objects from the side. Note that a slight gap is formed between the heat insulating outer periphery 43 and the vacuum heat insulating material 41, and the size of the vacuum heat insulating material 41 is somewhat improved. the same area as the foamed heat insulating material 42, and a panel configuration without using the heat insulating outer periphery 43 is also possible. In this case, the heat insulating performance can be further improved, but since there is no heat insulating outer periphery 43, there is a risk of being vulnerable to the breakage of the vacuum heat insulating material 41 due to the intrusion of sharp objects from the side. Although the heat insulating performance can be further improved, there is a risk of being vulnerable to the breakage of the vacuum heat insulating material 41 due to the intrusion of sharp objects from the side because there is no heat insulating outer periphery 43. In addition, a slight gap is formed between the heat insulating outer periphery 43 and the vacuum heat insulating material 41, and the size of the vacuum heat insulating material 41 is somewhat changed. Even when it changes, the vacuum heat insulating material 41 can be accommodated within the heat insulating outer periphery 43. It is.

[0083] Also, the heat insulating material protection member 44 is provided on the heat insulating outer periphery 43 and mainly serves to protect the vacuum heat insulating material 41. As this heat insulating material protection member 44, for example, a protection material made of an organic polymer can be used. It is possible.

[0084] The heat shielding sheet 45 is arranged so as to wrap the entire outer periphery of the vacuum heat insulating material 41, the foamed heat insulating material 42, the heat insulating outer periphery 43, and the heat insulating material protection member 44. This heat shielding sheet 45 can be arranged to cover the entirety of the vacuum heat insulating material 41 and the foamed heat insulating material 42. As the heat shielding sheet 45, for example, a multilayer sheet containing a metal foil, a vapor deposition sheet having a vapor deposition layer formed on one side of a resin sheet, etc. can be mentioned.

[0085] Next, the vacuum heat insulating material 41 will be further described. As shown in Fig. 9(a), the vacuum heat insulating material 4 1 is composed of a core material 41a and an exterior material 41b having gas barrier properties, and is a heat insulating material obtained by depressurizing the inside of the exterior material 41b. Fig. 9(b) shows another example of the vacuum heat insulating material 41. In Fig. 9(a), voids are formed at both ends inside the vacuum heat insulating material 41, but in Fig. 9( b), no voids are formed. The voids are formed or not formed depending on the difference in the manufacturing method of the vacuum heat insulating material 41. It is formed or not formed.

[0086] The core material 41a can use the materials used for the core materials of known vacuum heat insulating materials conventionally used, and for example, powders such as silica, foams such as urethane polymers, and porous bodies such as fibrous bodies such as glass wool can be used. It may be used.

[0087] The exterior material 41b is a member that covers the outer periphery of the core material 41a, and a flexible sheet in which a heat welding layer and a gas barrier layer are sequentially laminated on the core material may be used. The gas barrier layer may be a metal foil, a vapor deposition sheet in which a vapor deposition layer is formed on one side of a resin sheet, or the like. As the metal foil, for example, aluminum can be used. As the vapor deposition layer, for example, aluminum, aluminum oxide, or silicon oxide can be used.

[0088] (Disassembly and Assembly of the Transport Cart) Next, the operation when disassembling and assembling the transport cart 10 will be described. FIGS. 10 to FIG. 12 are diagrams for explaining a part of the process of sequentially disassembling the transport cart 10.

[0089] (Disassembly of the Transport Cart) First, as shown in FIG. 1, assume a case where the six heat insulating panels 11 to 16 of the transport cart 10 are deployed and assembled in a box shape (deployed state). At this time, a substantially rectangular parallelepiped-shaped accommodation space 20 is formed between the heat insulating panels 11 to 16. Although not shown, loads such as food may be stored in the accommodation space 20.

[0090] Next, as shown in FIG. 2, by folding the front panel 12, the front panel 12 shifts from the deployed state to the folded state.

[0091] During this period, first, as shown in FIG. 10(a), the third front partial panel 12c is folded so as to overlap the second front partial panel 12b. Specifically, the third front partial panel 12c rotates clockwise in a plan view with respect to the second front partial panel 12b around the third front hinge member 22c. 3 front hinge member 22c as the center.

[0092] Subsequently, as shown in Fig. 10(b), the second front partial panel 12b and the third front partial panel 12c overlap each other, and in this state, they rotate clockwise in a plan view with respect to the first front partial panel 12a around the second front hinge member 22b.

[0093] After that, as shown in Fig. 10(c), the second front partial panel 12b and the third front partial panel 12c move to the outer periphery of the first side frame 51. Specifically, the first front partial panel 12 a rotates clockwise in a plan view with respect to the first side panel 14 around the first front hinge member 22a. At this time, the first front partial panel 12a is positioned on the front side (Y - minus direction) with respect to the first side panel 14, and the second front partial panel 12b and the third front partial panel 1 2c are positioned on the outer side (X - minus direction) with respect to the first side frame 51. In this way, the front panel 12 becomes a folded state, and the front side of the transport cart 10 is opened in the horizontal direction (X - direction) (see Fig. 2). When there is a load stored in the storage space 20, the load is taken out from the front side in this state. When there is a load stored in the storage space 20, the load is taken out from the front side in this state. In this state, the load is taken out to the outside from the front side.

[0094] Subsequently, the upper shelf board 71 (see Fig. 2) is removed from the first side frame 51 and the second side frame 52. Specifically, one end (X - minus side end) of the upper shelf board 71 is removed from the cross bar 56 of the first side frame 51, and the other end (X - plus side end) of the upper shelf board 71 is removed from the cross bar 56 of the second side frame 52. Also, when the intermediate shelf board 73 (see Fig. 2) is provided, the intermediate shelf board 73 is removed from the first side frame 51 and the second side frame 52. The upper shelf board 71 and the intermediate shelf board 73 are stored outside the transport cart 10. The upper shelf board 71 and the intermediate shelf board 73 are stored outside the transport cart 10.

[0095] Next, by folding the bottom panel 16, the bottom panel 16 transitions from the deployed state to the folded state (see Fig. 3). At this time, the bottom panel 16 is rotated counterclockwise in a front view with respect to the first side frame 51 . As a result, the bottom panel 16 is folded so as to overlap the inside (X direction plus side) of the first side frame 51 and is positioned around the inner periphery of the first side frame 51. That is, the bottom panel 16 is arranged perpendicular to the horizontal plane (XY plane) (parallel to the YZ plane). In this case, the bottom panel 16 is attached to the first side frame 51 by a surface fastener (not shown) .

[0096] Next, by folding the bottom plate 58, the bottom plate 58 transitions from the deployed state to the folded state (see Fig. 3). During this process, the bottom plate 58 is rotated clockwise in a front view with respect to the second side frame 52 and is folded so as to overlap the inside (X direction minus side) of the second side frame 52 and is positioned around the inner periphery of the second side frame 5 2. That is, the bottom plate 58 is arranged perpendicular to the horizontal plane (XY plane) (parallel to the YZ plane). In this case, the bottom plate 58 is attached to the second side frame 52 by fixing means (not shown).

[0097] Subsequently, as shown in Figs. 11(a)-(c), by folding the top panel 11, the top panel 11 transitions from the deployed state to the folded state .

[0098] During this process, first, as shown in Figs. 11(a)(b), the first top panel portion 11a rotates counterclockwise in a front view with respect to the first side panel 14 around the first top hinge member 21c , and the second top panel portion 11b rotates clockwise in a front view with respect to the first top panel portion 11a around the second top hinge member 21d .

[0099] Subsequently, as shown in FIG. 11(c), the second top surface partial panel 11b moves inside the inner peripheral area of the first side frame 51. Specifically, the first top surface partial panel 11a rotates clockwise in a front view with respect to the first side panel 14 about the first top surface hinge member 21c, and the second top surface partial panel 11b rotates clockwise in a front view with respect to the first top surface partial panel 11a about the second top surface hinge member 21d. As a result, the second top surface partial panel 11b is folded downward and disposed so as to hang down from the first top surface partial panel 11a. At this time, the second top surface partial panel 11b is disposed inside the inner peripheral area of the first side frame 51 and on the inner side (X-direction positive side) with respect to the bottom panel 16. Next, as shown in FIGS. 12(a) and 12(b), by folding the back panel 13, the back panel 13 changes from the unfolded state to the folded state. During this process, first, as shown in FIGS. 12(a) and 12(b), the second back partial panel 13b rotates counterclockwise in a plan view with respect to the first back partial panel 13a about the first back hinge member 23a. As a result, the second back partial panel 13b is folded so as to overlap the first back partial panel 13a and is disposed on the outer side (Y-direction positive side) of the first back partial panel 13a. On the other hand, the first back partial panel 13a maintains the same position as in the unfolded state even in the folded state. In this way, all six heat insulation panels 11 to 16 of the transport cart 10 are in the folded state. As described above, when the transport cart 10 is not used, the heat insulation panels 11 to 16 can be folded and stored and transported with the overall volume reduced as much as possible.

[0100]

[0101]

[0102] ​​​​​​​​​​​​

[0103] (Assembly of transport carts) The transportation cart 10 can be assembled by performing the above-described disassembly method in reverse order.

[0104] That is, first, start with the reverse operation of FIG. 12(a)(b). 3 is changed from the folded state to the unfolded state. Next, the reverse operations shown in Fig. 11(a)-(c) are carried out. That is, the top panel 11 is changed from the folded state to the unfolded state. Next, the bottom plate 58 and the bottom The surface panel 16 is changed from the folded state to the unfolded state. Then, the first side frame 51 and the second side frame 10(a)-52 are attached to the upper shelf 71 and the intermediate shelf 73. As a reverse operation of (c), the front panel 12 is changed from the folded state to the unfolded state, The assembly work is completed.

[0105] When the six heat insulating panels 11 to 16 of the transport cart 10 are in the expanded state in this manner, Between each of the heat insulating panels 11 to 16, a storage space 20 having a substantially rectangular parallelepiped shape is formed (see FIG. 1). In particular, since each of the heat insulating panels 11 to 16 is made of a heat insulating material, the storage space 20 is not broken. It becomes a thermal space, blocking heat transfer with the outside air.

[0106] In this manner, according to the present embodiment, 1 / 2 of the height direction of the first side frame 51 and the second side frame 52 is The upper shelf 71 is removably disposed at a position above the upper shelf 3. The shelf board 71 connects the upper part of the first side frame 51 and the upper part of the second side frame 52. The first side frame 51 and the second side frame 52 are less likely to be distorted. The variation in the distance between the frame 52 is suppressed, and the fitting property between the heat-insulating panels 11 to 16 is reduced. can be suppressed. As a result, the airtightness of the storage space 20 can be maintained. Also, when pulling the transport cart 10, a force acts that may impair the fit between the heat insulating panels 11 to 16. In contrast, according to the present embodiment, this force can be dispersed not only by the central connecting rod 54 but also by the upper shelf plate 71. Therefore, during the movement of the transport cart 10, the fit between the heat insulating panels 11 to 16 is less likely to deteriorate.

[0107] Further, according to the present embodiment, the upper shelf plate 71 is detachably attached to the first side frame 51 and the second side frame 52. Thereby, the variation in the distance between the first side frame 51 and the second side frame 52 can be suppressed by the upper shelf plate 71.

[0108] Also, according to the present embodiment, the plurality of heat insulating panels 11 to 16 can be in a deployed state in which they are deployed and assembled into a box shape, and a folded state in which they can be nested with other transport carts 10. Thereby, by expanding the heat insulating panels 11 to 16, a storage space 20 with high airtightness that can accommodate the loaded items inside the heat insulating panels 11 to 16 can be formed. On the other hand, when the transport cart 10 is not used, by folding the heat insulating panels 11 to 16, they can be nested with other identical transport carts 10 and these transport carts 10 can be stored compactly. In this way, the folding operation and the assembly operation of the heat insulating panels 11 to 16 can be easily performed.

[0109] Also, according to the present embodiment, since the intermediate shelf plate 73 is detachably arranged at a position below the upper shelf plate 71, loaded items can be placed on the intermediate shelf plate 73. Also, By removing the upper shelf board 71 and the middle shelf board 73, a plurality of transport carts 10 can be nested ing.

[0110] Further, according to the present embodiment, since the front panel 12 can be opened, loading and unloading of the loaded goods and the refrigerant 72 can be performed from the front panel 12 side, and the upper shelf board 71 and the middle shelf board 73 can be attached and detached ed.

[0111] Further, according to the present embodiment, since the refrigerant 72 is arranged on the upper shelf board 71, the cold air from the refrigerant 72 can be sent downward to the loaded goods. Also, since the refrigerant 72 is installed on the upper shelf board 71, there is no need to attach a refrigerant pocket or the like for accommodating the refrigerant 72 on the heat insulating panels 11 to 16 side.

[0112] (Modification) Next, with reference to FIGS. 13 to 15, a modification of the transport cart will be described. FIGS. 13 to 15 are diagrams showing each modification of the transport cart. In FIGS. 13 to 15, the same parts as those shown in FIGS. 1 to 12 are denoted by the same reference numerals and detailed description thereof is omitted.

[0113] (Modification 1) FIG. 13 shows a part of the transport cart 10 according to Modification 1. In FIG. 13, the top surface panel 11 has a pair of top surface partial panels 11c and 11d that open like double doors. The top surface partial panels 11c and 11d have substantially the same shape as each other, and are rotatable about the upper ends of the first side panel 14 and the second side panel 15, respectively. In this case, by opening the top surface partial panels 11c and 11d, the refrigerant 72 on the upper shelf board 71 can be removed from the top surface side ​​It can be exchanged and replenished. Although not shown in the figure, a small window is provided on the top panel 11, and the coolant 72 may be exchanged and replenished through this small window.

[0114] (Modification Example 2) FIG. 14 is a view showing the transport cart 10 according to Modification Example 2, and shows a state in which only the front panel 12 side is open. In FIG. 14, the upper shelf board 71A is detachably attached to the first side panel 14 and the second side panel 15. Specifically, one end (the X-direction minus side end) of the upper shelf board 71A is detachably attached to the first side panel 14, and the other end (the X-direction plus side end) of the upper shelf board 71A is detachably attached to the second side panel 15. This upper shelf board 71A is disposed at a position above 1 / 3 in the height direction (Z direction) of the first side frame 51 and the second side frame 52. Note that the upper shelf board 71A and the first side panel 14 and the second side panel 15 may be attached by detachable members such as surface fasteners (not shown). In FIG. 14, the first side panel 14 and the second side panel 15 are respectively disposed inside the first side frame 51 and the second side frame 52. Also, the first side panel 14 and the second side panel 15 are respectively fixed to the first side frame 51 and the second side frame 52. As a result, the upper parts of the first side frame 51 and the second side frame 52 are fixed, so that the perpendicularity of the first side frame 51 and the second side frame 52 is less likely to wobble, and the distance between the first side frame 51 and the second side frame 52 is suppressed from changing.

[0115] As a result, the fitting property between the heat insulation panels 11 to 16 is less likely to deteriorate, and the airtightness of the accommodation space 20 is maintained.

[0116] (Modification Example 3)​​​​​​ FIG. 15 is a diagram showing a transportation cart 10 according to a third modified example, in which only the front panel 12 side is open. In FIG. 15, the upper shelf board 71B is in the released state. and the second side panel 15. One end (the end on the negative side in the X direction) of the shelf board 71B is detachably attached to the first side panel 14. The other end (the end on the positive side in the X direction) of the upper shelf board 71B is detachably attached to the second side panel 15. The upper shelf plate 71B is attached to the first side frame 51 and the second side frame 52. The upper shelf plate 71B and the first shelf plate 71C are disposed at a position above 1 / 3 of the height in the Z direction. The side panel 14 and the second side panel 15 are attached to each other by a detachable member such as a hook-and-loop fastener (not shown). It may be more firmly attached.

[0117] In FIG. 15, the first side panel 14 and the second side panel 15 are each a first side frame. 51 and the second side frame 52. Therefore, the upper shelf board 71B is disposed outside the first side frame 51 and the second side frame 52. The first side wall 52 is formed by passing between the horizontal rails 56 of the frame 51 and the second side frame 52 in the X direction. The panel 14 and the second side panel 15 are fixed to the first side frame 51 and the second side frame 52, respectively. As a result, the upper portions of the first side frame 51 and the second side frame 52 are fixed, The verticality of the first side frame 51 and the second side frame 52 is less likely to be affected, and the verticality of the first side frame 51 and the second side frame 52 is less likely to be affected. The variation in the distance between the side frame 52 is suppressed. As a result, the fitting of the heat-insulating panels 11 to 16 with each other is The airtightness of the storage space 20 is maintained. Since it is not necessarily necessary to align it with the position of the horizontal rail 56, the height direction (Z direction) of the upper shelf board 71B This makes it easier to adjust the position of the lens.

[0118] A plurality of components disclosed in the above embodiment and modification may be appropriately combined as necessary. Alternatively, it is possible to use all the components shown in the above embodiment and modified examples. Some components may be removed from the [Explanation of symbols]

[0119] 10 Transport trolley 11 Top Panel 12 Front Panel 13 Rear Panel 14 First side panel 15 Second side panel 16 Bottom Panel 20 Containment Space 50 Cart body 51 First side frame 52 Second side frame 53 Connecting members 54 Central connecting rod 55 Vertical rod 56 Crosspiece 57 Center Frame 58 Bottom plate 71 Upper shelf 72 Ice packs 73 Middle shelf

Claims

1. A trolley for transportation, comprising a trolley body having a pair of side frames each having a cross bar and a connecting member connecting the pair of side frames to each other, and a plurality of heat insulating panels disposed on the trolley body. The plurality of heat insulating panels include at least a top panel, a front panel, a back panel, and a pair of side panels. The pair of side panels are respectively disposed outside the side frames. The trolley further comprises a shelf board removably disposed on the pair of side frames. The shelf board is disposed on the cross bars of the pair of side frames. At least a pair of protrusions are provided on the shelf board, and the pair of protrusions are engaged with at least one of the inner and outer sides of the cross bars. A trolley for transportation, wherein the front panel is openable and foldable toward the side panel side.

2. The trolley for transportation according to claim 1, wherein the shelf board is removably attached to the pair of side frames.

3. The trolley for transportation according to claim 1 or 2, wherein the shelf board is removably attached to a part of the plurality of heat insulating panels.

4. The trolley for transportation according to any one of claims 1 to 3, wherein the plurality of heat insulating panels can take a deployed state in which the plurality of heat insulating panels are deployed in a box shape and a folded state in which the plurality of heat insulating panels can be nested with other trolleys for transportation by folding.

5. The trolley for transportation according to any one of claims 1 to 3, wherein an additional shelf board is removably disposed on the pair of side frames.

6. The trolley for transportation according to any one of claims 1 to 3 and 5, wherein a cold insulating agent is disposed on the shelf board.

7. The carrier trolley according to any one of claims 1 to 3, 5 to 6, wherein a plurality of through holes are formed in the shelf board.

8. The carrier trolley according to any one of claims 1 to 3, 5 to 7, wherein a groove is formed on the upper surface of the shelf board.

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