JP2020082970A - Transport bogie - Google Patents

Abstract

To provide a transport bogie which is easy in the folding of panels, reduces a possibility that the panels are damaged at the folding, and can be made compact in a size at non-use.SOLUTION: A transport bogie 100 is allowed in nesting with another transport bogie, and comprises: a bogie main body 50 having a first side frame 51, a second side frame and a connecting member 53; and a plurality of panels 11, 12, 13, 14, 15 and 16. A first panel group including the first side frame and a second panel group including the second side frame are formed in folded states, and the bogie main body comprises: a bottom plate 58 capable of performing rotational movement, etc. with respect to the connecting member; and a foundation part 81 for supporting the bottom plate from below. When setting a heavier thickness out of a total thickness of the first panel group and a total thickness of the second panel group as T, and setting a shorter distance out of a distance from any of one-side ends of the connecting member except for wheels of the bogie main body up to an end part at a side opposite to one end of the foundation part as D, T and D are equal, or T is larger than D.SELECTED DRAWING: Figure 1

Description

The present embodiment relates to a carriage.

2. Description of the Related Art Conventionally, for example, in a store or factory, a carriage for carrying a load such as food has been used. Such a transportation trolley has a trolley body having a pair of side frames, and a trolley body cover having heat insulation is provided on the trolley body in order to keep heat, cold, or protect a load such as food. It is installed. As such a carrier truck, for example, one disclosed in Patent Document 1 is known.

JP, 2013-233970, A

However, the trolley cover of the conventional transportation trolley is made of, for example, a sewn sheet material, and is generally thin and flexible (see Patent Document 1). Therefore, in the conventional bogie cover, there is a problem that it is difficult to sufficiently enhance the heat insulation performance and sufficiently protect the loaded object inside.

On the other hand, it is conceivable to assemble the panel into a box shape and mount the panel on the trolley body, but in this case, the work of disassembling or folding the panel may be complicated. Also, depending on the dimensions and placement of the trolley body and the panel, when disassembling or folding the panel, a complicated procedure may be used to avoid the panel from colliding with a part of the trolley and damaging the panel or colliding. It may be necessary to disassemble or fold the panel. In addition, when the panel is disassembled or folded, there is a possibility that the size of the transportation cart cannot be made compact.

It is an object of the present disclosure to provide a transportation cart that can be easily folded, reduces the possibility of damaging the panel during folding, and can be made compact when not in use.

The carrying cart according to the present embodiment is a carrying cart that can be nested with another carrying cart, and includes a first side frame, a second side frame, the first side frame, and the second side frame. A trolley body having a coupling member for coupling to each other, and a plurality of panels provided so as to be assembled and foldable with respect to the trolley body, the plurality of panels being in a box shape. The assembled state and the folded state in which the plurality of panels are folded to allow nesting with the other transporting carriage can be taken, and in the folded state, at least a part of each panel is the first By being folded around the side frame or the second side frame, a first panel group including the first side frame and a second panel group including the second side frame are formed, and the bogie body is A bottom plate that can be rotationally moved or detached from the connecting member is provided, and a base portion that supports the bottom plate from below in the assembled state is provided, and the first side frame and the second side frame are arranged to face each other. Is the longitudinal direction, and the thicker one of the total thickness of the first panel group along the longitudinal direction and the total thickness of the second panel group along the longitudinal direction is T. Of the distances from one end of any one of the connecting members excluding the wheels along the longitudinal direction of the main body to the end of the base portion opposite to the one end, when the shorter distance is D, T is equal to D or T is greater than D.

Further, a carrier truck according to another embodiment of the present invention is a truck main body having a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other. , A plurality of panels provided so as to be assembled and foldable with respect to the trolley body, the plurality of panels being in an assembled state in which the plurality of panels are assembled in a box shape, and the plurality of panels being folded. And a first side frame by folding at least a part of each panel around the first side frame or the second side frame in the folded state. A first panel group and a second panel group including the second side frame are formed, the carriage main body includes a bottom plate that is rotatable and movable with respect to the connecting member, and the bottom plate is in the assembled state. Of the first panel group and the second panel group in the folded state. When the panel group that does not include the bottom plate is the reference panel group and the side frame included in the panel group is the reference side frame, the bottom plate in the assembled state is the long side with the reference panel group in the folded state. It is arranged without overlapping along the direction, and the shortest distance along the longitudinal direction between the reference side frame and the bottom plate is E, and the reference side frame and the end part of the reference panel group on the bottom plate side. When F is the shortest distance along the longitudinal direction, E is equal to F or E is larger than F.

In the transportation cart according to the present embodiment, the plurality of panels include at least a top panel, a front panel, a rear panel, a first side panel on the side of the first side frame, and a side panel on the side of the second side. A second side panel may be included, and the plurality of panels may further include a bottom panel.

Further, a carrier truck according to another embodiment of the present invention is a truck main body having a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other. , A plurality of panels provided so as to be assembled and foldable with respect to the trolley body, the plurality of panels being in an assembled state in which the plurality of panels are assembled in a box shape, and the plurality of panels being folded. And a first side frame by folding at least a part of each panel around the first side frame or the second side frame in the folded state. A first panel group and a second panel group including the second side frame are formed, the carriage main body includes a bottom plate that is rotatable and movable with respect to the connecting member, and the bottom plate is in the assembled state. And a plurality of panels, at least a top panel, a front panel, a back panel, a first side panel on the first side frame side, and a second side frame side. A second side panel and a bottom panel, wherein the direction in which the first side frame and the second side frame face each other is the longitudinal direction, and the first panel group and the second panel group are When the panel group that does not include the bottom plate in the folded state is the reference panel group, and the side frame included in the panel group is the reference side frame, the bottom plate in the assembled state is the reference panel group in the folded state. Is arranged along the longitudinal direction without overlapping, E is the shortest distance between the reference side frame and the bottom plate along the longitudinal direction, the thickness of the top panel is p, and the thickness of the bottom panel is Let q be q, then E is equal to the sum of p and q, or E is greater than the sum of p and q.

In the transportation cart according to the present embodiment, the front panel may include a plurality of foldable front partial panels.

In the transportation cart according to the present embodiment, one of the first panel group and the second panel group includes the front panel, the bottom panel and the top panel, and the other panel. The bottom plate may be included in the group.

In the transportation cart according to the present embodiment, one of the first panel group and the second panel group includes the front panel and the bottom panel, and the other panel group includes the above panel. A bottom plate and the top panel may be included.

In the carrier truck according to the present embodiment, the front partial panel may be included in both the first panel group and the second panel group.

In the transporting trolley according to the present embodiment, in the assembled state, the bottom plate of the trolley body may include a protrusion that partially protrudes downward, and the protrusion may be in contact with the base portion. ..

In the transport carriage according to the present embodiment, the carriage main body may have two wheels each below the first side frame and below the second side frame.

In the carrier truck according to the present embodiment, each panel may include a heat insulating panel, and the heat insulating panel may include a vacuum heat insulating material or a foam heat insulating material.

According to the present embodiment, it is possible to easily fold the panel of the transportation cart, reduce the possibility of damaging the panel during folding, and make the panel compact when not in use.

FIG. 3 is a perspective view showing the carrier truck according to the first embodiment, in which the front panel is in a folded state. FIG. 3 is a perspective view showing the carrier truck according to the first embodiment, in which the front panel is in a closed state. It is a figure in which a front panel is in a partially opened state. It is a perspective view showing a trolley body. It is a top view explaining the structure of the bottom plate of a trolley body. It is sectional drawing which shows each panel. It is sectional drawing which shows the vacuum heat insulating material of each panel. It is a figure in which a back panel is in a partially opened state. It is a figure in which a top panel is in a partially opened state. It is a figure in which each panel is in a folded state. It is a front view and a top view about FIG. It is a front view which shows the state in which the carrying cart was nested. It is a top view which shows the state in which the carrying cart was nested. It is a perspective view which shows the carriage for 2nd Embodiment. It is a front view about FIG. It is a perspective view showing a truck for transportation of a 3rd embodiment. FIG. 17 is a front view of FIG. 16. It is a perspective view showing the truck for transportation of a 4th embodiment. It is a front view about FIG. FIG. 9 is a front view and a plan view showing a carrier truck according to a modified example 1. It is a front view which shows the state in which the carrying cart of the modification 1 was nested. FIG. 9 is a perspective view showing a bogie main body according to a second modification. FIG. 11 is a perspective view showing a bogie main body according to Modification 3; FIG. 11 is a perspective view showing a bogie main body according to Modification 4;

Hereinafter, an example of the panel container and the transportation cart of the present disclosure will be described with reference to the drawings and the like. However, the panel container and the carriage for carrying out the present disclosure are not limited to this example and the embodiments described later.

In addition, each figure shown below is shown typically. Therefore, the size and shape of each part are exaggerated as appropriate for easy understanding. Further, in each drawing, hatching showing cross sections of members is omitted as appropriate. Numerical values such as dimensions of each member and material names described in the present specification are examples of the embodiment, and the present invention is not limited thereto and can be appropriately selected and used. In the present specification, terms that specify a shape or a geometric condition, such as parallel, orthogonal, and vertical terms, mean not only the strict meaning but also the substantially same state.

Further, in the following embodiments, when the direction in which the pair of side frames of the carriage body of the carriage is arranged to face each other is the longitudinal direction, the Y direction is parallel to the bottom surface on which the carriage is arranged. Is a direction parallel to the longitudinal direction of the carriage, and the X direction is a direction orthogonal to the Y direction in a plane parallel to the bottom surface on which the carriage is arranged. The Z direction is a direction orthogonal to the X direction and the Y direction, that is, the vertical direction.

When the panel container is assembled on the transporting carriage, the side on which the panel having the main surface parallel to the Z direction for loading and unloading the load is usually arranged in the +X direction in the X direction. The side on which the opposing panels are arranged is also referred to as the -X direction, the bottom surface side in the Z direction is also referred to as the -Z direction, and the opposite side to the -Z direction is also referred to as the +Z direction. Further, the Z direction may be referred to as the vertical direction, the +Z direction may be referred to as the upper side, and the −Z direction may be referred to as the lower side. In the direction in which the −Z direction is viewed from the +X direction side toward the bottom surface side, the right hand side is also referred to as the +Y direction in the Y direction, and the side opposite to the +Y direction is also referred to as the −Y direction. Moreover, the direction along the XY plane may be referred to as a horizontal direction, a horizontal direction, a left-right direction, or the like.

In the carriage or the panel container, a plane perpendicular to the X direction viewed from the +X direction is also referred to as a front surface, and a plane perpendicular to the X direction viewed from the −X direction is also referred to as a back surface. A plane perpendicular to the Y direction viewed from the +Y direction is also referred to as a side surface or a right surface, and a plane perpendicular to the Y direction viewed from the −Y direction is also referred to as a side surface or a left surface. However, the front surface and the back surface may be referred to as side surfaces. A plane perpendicular to the Z direction viewed from the +Z direction is also referred to as a top surface, and a plane perpendicular to the Z direction viewed from the −Z direction is also referred to as a bottom surface.

Of the six faces that form each panel that configures the panel container, the pair of faces that are the widest and that face opposite sides are the main faces. The main surface of each panel on the side of the heat insulating space in the assembled state of the panel container is the inner surface, and the main surface of each panel on the side opposite to the heat insulating space is the outer surface. In addition, in each panel, a surface other than the main surface of the panel is an end surface.

1. First Embodiment (a) Configuration of Transporting Cart The configuration of the transporting cart of the first embodiment of the present disclosure will be described based on FIGS. 1 to 3. FIG. 1 shows a carrier truck 100 according to a first embodiment of the present disclosure, in which a panel container 30 is mounted on an upper side of a bottom surface of a truck body 50, a front panel 12 of the panel container 30 is opened and folded. It is a perspective view which is in the opened state. 2 is a perspective view of the carriage 100 of the first embodiment, which is different from FIG. 1 only in that the front panel 12 of the panel container 30 is in a closed state, and FIG. On the other hand, the drawings are different only in that the front panel 12 is partially opened.

As shown in FIGS. 1 to 3, the carriage 100 according to the first embodiment includes a carriage main body 50 and a panel container 30 mounted on the upper side of the bottom surface of the carriage main body 50. The panel container 30 is composed of a plurality of panels 11 to 16 which can be assembled and folded with respect to the carriage main body 50.

The transportation cart 100 is used, for example, in a store, a factory, a distribution process, or the like when storing or transporting a load that needs to be kept cold or warm. In such a carriage 100, as shown in FIG. 2, an accommodation space 20 capable of accommodating a load is surrounded by six panels 11 to 16 forming a panel container 30 to form a heat insulation space. By doing so, the temperature change inside the carriage 100 is configured to be suppressed as much as possible. On the other hand, when the carriage 100 is not used, for example, by folding the panel container 30 with respect to the carriage main body 50, the whole size of the carriage 100 can be made compact and can be easily stored. In addition, depending on the size and arrangement of the trolley body 50 and the panel when folded, the trolley body 50 can be nested with other trolleys 100, that is, nesting, and a plurality of trolleys 100 can be stacked compactly. Can be stored.

For convenience of description, the present disclosure exemplifies a so-called four-wheel cart or a four-wheel cart having a pair of side frames, a connecting member, and four wheels as the carriage main body of the carriage. However, the transportation cart of the present disclosure is not limited to this, and is applicable to, for example, a cart or a cart having six wheels or more.

Inside the panel container 30 of the carriage 100, as shown in FIG. 1, a shelf plate 71 extending in the left-right direction is arranged at a substantially intermediate height in the up-down direction, and the accommodation space 20 is partitioned vertically. .. The shelf board 71 is mounted such that both ends thereof straddle the horizontal rails 56 arranged horizontally in the first side frame and the second side frame 52 (not shown) that are a pair of side frames inside the panel container 30. It is placed. The shelf plate 71 can be attached to and detached from the panel container 30, and when the shelf plate 71 is used, the luggage to be loaded in the panel container 30 can be mounted on the bottom panel 16 and the shelf plate 71 can be mounted. It can also be installed in the storage space 20, and the storage efficiency of luggage in the storage space 20 can be improved.

Further, inside the panel container 30, a heat storage material storage portion 70 is provided along the inner surface of the back panel 13. The heat storage material storage unit 70 has therein a heat storage material cooled or heated to a predetermined temperature, and has a function of cooling or heating the air in the storage space 20 to a predetermined temperature. The heat storage material storage unit 70 may have a structure in which the lid is closed with a chuck or a surface fastener so that the stored heat storage material does not drop. Further, the heat storage material storage unit 70 may be formed of a cloth, a non-woven fabric, a mesh structure material, a wire mesh structure material or the like having a large number of gaps so that cold air or heat from the heat storage material can be easily transmitted to the storage space 20. Good.

(I) Bogie Main Body Next, the configuration of the bogie main body 50 will be described with reference to FIGS. 4 and 5. FIG. 4 is a perspective view of the carriage main body 50, and FIG. 5 is a plan view of the carriage main body 50. The trolley body 50 includes 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. The connecting member 53 includes four wheels 61 to 64, and the wheels 61 to 64 are attached toward the lower side of the connecting member 53.

The first side frame 51 is provided on the −Y direction side of the carriage main body 50, and protrudes from the connecting member 53 toward the +Z direction side. The first side frame is formed in a ladder shape, and has a pair of columns 55 and a plurality of horizontal rails 56 extending in the X direction between the pair of columns 55. The plurality of horizontal rails 56 are arranged at substantially equal intervals in the vertical direction. Below the lowermost horizontal rail 56, a connecting column 54 is provided along the vertical direction for connecting the horizontal rail 56 and the connecting member 53, and two wheels 61, 62 are provided below the first side frame 51. Is provided.

In this way, the pair of columns 55 is not directly connected to the first wheel mounting frame 67, but only the coupling column 54 provided near the center of the pair of columns 55 is connected to the first wheel mounting frame 67. By doing so, it is possible to prevent the central frame 57 of the other carriage 100 from interfering with the support 55 during nesting. It is also possible to prevent the central frame 57 from interfering with the support column 55 by forming the lower portion of one or both of the pair of support columns 55 into a curved shape.

The second side frame 52 is provided at the other end in the longitudinal direction, which is the +Y direction side of the carriage main body 50, and is provided so as to project upward from the connecting member 53. The configuration of the second side frame 52 is substantially the same as the configuration of the first side frame 51, and two wheels 63 and 64 are provided below the second side frame 52.

The connecting member 53 has a central frame 57 extending in the Y direction, which is the longitudinal direction of the carriage main body 50, and two wheel mounting frames 67, 68 extending in the X direction, which are respectively connected to the central frame 57. The wheel mounting frames 67 and 68 are arranged below the central frame 57 so as to be separated from each other. The center frame 57 is arranged substantially in the center of the carriage main body 50 in the Y direction. Although the central frame 57 is provided near the center of the carriage main body 50 in the X direction as in the present embodiment, the central frame 57 is arranged at a position shifted toward the −X direction side or the +X direction side along the X direction. Alternatively, a plurality of locations may be provided instead of one location. Further, although the two wheel mounting frames 67 and 68 are arranged on the lower side of the central frame 57, they may be at the same height as the central frame 57 in the Z direction, or above the central frame 57. It may be arranged on the side. Further, the wheel mounting frames 67 and 68 may have an integrated structure with the central frame 57, and three or more wheel mounting frames may be arranged as described later. However, in order to nest the plurality of transport carriages 100 without interfering with each other, the connecting member 53 is preferably configured as in this embodiment.

The wheel mounting frames 67, 68 are composed of a first wheel mounting frame 67 arranged on the first side frame 51 side and a second wheel mounting frame 68 arranged on the second side frame 52 side.

The first wheel mounting frame 67 is provided at the −Y direction side end of the central frame 57, and the +X direction side end and the −X direction side end of the first wheel mounting frame 67 are respectively the first wheels 61 and The second wheel 62 is attached. Similarly, the second wheel mounting frame 68 is provided at the +Y direction side end of the central frame 57, and the +X direction side end and the −X direction side end of the second wheel mounting frame 68 are respectively the third wheels. 63 and a fourth wheel 64 are attached.

The wheels 61 to 64 are composed of the first wheel 61, the second wheel 62, the third wheel 63, and the fourth wheel 64, as described above. Of these, the first wheel 61 and the second wheel 62 are free wheels, and each of them rotates along an axle parallel to a horizontal plane (XY plane) and turns around a vertical axis (Z axis). And are possible. On the other hand, the third wheel 63 and the fourth wheel 64 are fixed wheels and can rotate along the axles parallel to the horizontal plane (XY plane), but can rotate around the vertical axis (Z axis). It is impossible to turn. With such a configuration, it is possible to perform stable straight traveling when a loaded object is placed on the transporting carriage 100 and traveling. However, the first wheel 61 and the second wheel 62 may be fixed wheels, and the third wheel 63 and the fourth wheel 64 may be free wheels, and the first wheel 61 and the second wheel 62, or all four wheels may be free wheels. The structure may be such that it can be used by switching to one of the wheels.

(Ii) Bottom Plate A foldable bottom plate 58 is provided above the central frame 57 of the connecting member 53. The bottom plate 58 has a substantially rectangular parallelepiped shape and is arranged so as to extend along the Y direction between the first side frame 51 and the second side frame 52, and between the first side frame 51 and the second side frame 52 in the X direction. It has a length slightly shorter than the distance. The bottom plate 58 when it is lowered downward is provided with a protrusion 82 projecting downward at the tip end on the −Y direction side, and the protrusion 82 is an end on the −X direction side and an end on the +X direction side. Section, respectively. Further, each of the projecting portions 82 is in contact with the base portion 81 that is arranged below and extends in the X direction. As a result, the base 81 fixed to the connecting member 53 can support the bottom plate 58 from below.

The bottom plate 58 is rotatable about a rotation axis in the X direction with respect to a point closer to the +Y direction of the central frame 57, and details of the structure are shown in FIG. FIG. 5 is a plan view of the carriage main body 50 as viewed from the +Z direction side. Note that the detailed structure of the bottom plate 58 is omitted in other drawings. In the assembled state of the bottom plate 58, that is, in the state where the bottom plate 58 is lowered to the side of the central frame 57, a rotary shaft portion 85 serving as a rotary shaft around the X direction is attached near the tip on the +Y direction side of the bottom plate 58. The rotary shaft portion 85 is fitted in a cylindrical hole provided in the rotary support portion 84, and the rotary support portion 84 is fixed to a point on the central frame 57 near the +Y direction. Further, a notched bottom plate recess 83 is formed in the bottom plate 58 near the center in the +Y direction and in the X direction, and both ends of the rotary shaft part 85 are provided near the end face of the bottom plate recess 83 along the X direction. Two rotary shaft storage recesses 86 for storage are formed.

With the above structure, when the bottom plate 58 is in the assembled state, its main surface is substantially parallel to the XY plane, and the projections 82 formed at the two end portions on the −Y direction side are supported from the lower base portion 81. When the bottom plate 58 transitions to the folded state, the main plate becomes substantially parallel to the XZ plane by rotating the bottom plate 58 about the rotary shaft portion 85 as a rotation axis, and the second side frame 52 is rotated. It can be in a state of being leaned against.

By storing the bottom plate 58 adjacent to the second side frame 52 in the folded state in this manner, a heavy object is inadvertently mounted on the bottom plate 58 when the trolley body 50 is moved or stored when not in use, The risk of damage to the bottom plate 58 due to the impact can be reduced. Further, depending on the folding condition of the panel container 30 which will be described later, nesting of a plurality of folded carriages can save space during storage. However, the mounting structure of the bottom plate 58 to the trolley body 50 is not limited to this, and may be a structure in which the bottom plate 58 is moved in parallel to the trolley body 50 or a detachable structure.

If the bottom plate 58 has an appropriate load resistance when the panel container 30 is assembled or loaded inside, and the airtightness of the panel container 30 can be maintained, the bottom plate 58 is not particularly limited in its structure and material. There is no limit. From the viewpoint that light weight and high rigidity can be obtained, it is preferably made of casting type resin, but it may be made of metal, wood, or high compression type cardboard. The protrusion 82 may be integrally molded with the main body of the bottom plate 58, or may be made of a different material as a separate component.

(Iii) Base part The bottom plate 58 when it is lowered downward protrudes downward to the tip part on the −Y direction side, and is arranged at the end part on the −X direction side and the end part on the +X direction side, respectively. The projection 82 is provided. Further, each of the projecting portions 82 is in contact with a flat plate-shaped base portion 81 that is arranged below and extends in the X direction. As a result, the base 81 fixed to the central frame 57 can support the bottom plate 58 from below.

Since the base 81 plays a role of supporting the load of the luggage mounted on the bottom plate 58 and the panel container 30 as described above, as long as it has an appropriate load resistance corresponding to it, the structure, the material, etc. There is no particular limitation. From the viewpoint of being integrated with the connecting member 53 and obtaining sufficient rigidity, it is preferably made of metal, but may be made of wood or resin. The base 81 may be integrally formed with the main body of the connecting member 53, or may be made of a different material as a separate component. Further, the shape thereof is not limited to the flat plate shape or the rectangular parallelepiped shape, and any shape can be adopted as long as the bottom plate 58 can abut and support the protruding portion 82.

(B) Configuration of Panel Container With reference to FIGS. 1 to 3, configurations of the panel container 30 and the panels 11 to 16 will be described.

In the panel container 30 of the present embodiment, the panels 11 to 16 are assembled in a substantially rectangular parallelepiped shape that forms a heat insulating space therein, and adjacent portions between the panels ensure airtightness as a panel container. For this reason, they are abutted against each other so that the gap is unlikely to occur as much as possible, or they are connected to each other by a flexible member that can be bent. Further, the front panel 12 can be opened and closed for the convenience of loading and unloading articles into and from the panel container 30.

As shown in FIG. 1, the panels 11 to 16 of the panel container 30 form a substantially rectangular parallelepiped shape except the opened front panel 12, and the top panel 11, the front panel 12, the back panel 13, and the first side panel 14 are formed. , A second side panel 15 and a bottom panel 16. The main surfaces of the top panel 11, the front panel 12, the back panel 13, the first side panel 14, the second side panel 15, and the bottom panel 16 are each substantially rectangular. Further, the front panel 12 and the back panel 13 have principal surfaces of substantially the same size, and the first side panel 14 and the second side panel 15 have principal surfaces of substantially the same size. Has a size. Each of the panels 11 to 16 is made of a rigid plate-shaped member so that it will not be deformed flexibly during use.

Further, as will be described later, the front panel 12 is formed by horizontally connecting three partial panels composed of plate-like members, and the top panel 11 is similarly formed by connecting two partial panels. The rear panel is also formed by connecting three partial panels. As described later, this structure is for ensuring the workability of assembling and folding the panel container 30 and the compactness of the transporting carriage 100 after folding.

When the panel container 30 is in the assembled state, the six panels 11 to 16 surround the accommodation space 20 for accommodating the load, so that it is possible to form a heat insulating space in the accommodation space 20. The end faces of the six panels 11 to 16 are in close contact with the main faces or end faces of any of the other panels 11 to 16, thereby ensuring the airtightness of the accommodation space 20. When the periphery of the heat insulating space is surrounded by a heat insulating material, inflow and outflow of heat with the outside is limited, and good heat insulating properties can be maintained.

(C) Internal Structure of Panel The structure of the panels 11 to 16 will be described. FIG. 6 is a cross-sectional view showing the heat insulating portion 40 of each panel 11 to 16, and FIGS. 7A and 7B are cross-sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40. In addition, in this embodiment, each panel 11-16 is provided with the heat insulation part 40 which has the vacuum heat insulating material 41, However, not all panels need to be heat insulation parts containing a vacuum heat insulating material, for example, the load of a load. The bottom panel 16 having a high risk of damage to the vacuum heat insulating material may be composed of a heat insulating portion that does not include the vacuum heat insulating material, or the bottom panel 16 and the top panel 11 do not include the vacuum heat insulating material. It may be composed of parts. Furthermore, the front panel 12 may be composed of a heat insulating portion that does not include a vacuum heat insulating material. This is because the top panel 11 and the front panel 12, which are considered to be opened and closed a relatively large number of times, have a risk of damaging the vacuum heat insulating material due to opening and closing work.

Further, depending on the cold insulation, heat insulation temperature, etc. required for the luggage inside, a panel may be used that does not include any of the heat insulating portion containing the vacuum heat insulating material and the heat insulating portion not containing the vacuum heat insulating material. .. This is because, if the transportation is carried out in a short time, the luggage can be sufficiently kept cold even by providing a sufficient cooling agent or the like. A panel including a heat insulating portion including a vacuum heat insulating material and a heat insulating portion not including the vacuum heat insulating material may be referred to as a heat insulating panel.

As shown in FIG. 6, the heat insulating portion 40 of each of the panels 11 to 16 has a vacuum heat insulating material 41, a foam heat insulating material 42, a heat insulating outer surrounding portion 43, a heat insulating material protecting member 44, and a heat shield sheet 45.

The vacuum heat insulating material 41 is attached to the foam heat insulating material 42. The vacuum heat insulating material 41 includes a core material 41a and an exterior material 41b provided around the core material 41a. A foamed heat insulating material 42 is arranged on the accommodation space 20 side of the vacuum heat insulating material 41 (lower side in FIG. 6). As a result, when the load accommodated in the accommodation space 20 collides with the panels 11 to 16, the foamed heat insulating material 42 absorbs the impact at the time of collision, thus reducing the risk of the vacuum heat insulating material 41 being damaged. be able to.

The foam heat insulating material 42 can be disposed adjacent to at least the accommodation space 20 side of the vacuum heat insulating material 41, and for example, polyurethane foam, polystyrene foam, or both of them can be used.

The heat insulation surrounding portion 43 is arranged so as to surround the vacuum heat insulating material 41. The heat insulation surrounding portion 43 is arranged adjacent to a part of the foam heat insulating material 42 and is fixed to the foam heat insulating material 42. Since the heat insulating enclosure 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 enclosure 43 is not arranged. Further, the vacuum heat insulating material 41 may have substantially the same cross-sectional area as the foam heat insulating material 42, and a panel configuration may be adopted in which the heat insulating surrounding portion 43 is not used.

The heat insulating material protection member 44 is provided so as to be partially adjacent to the heat insulating surrounding portion 43, and mainly serves to protect the vacuum heat insulating material 41. As the heat insulating material protection member 44, for example, a protection material made of an organic polymer can be used.

The heat shield sheet 45 is formed so as to include the entire outer circumference of the vacuum heat insulating material 41, the foam heat insulating material 42, the heat insulating surrounding portion 43, and the heat insulating material protecting member 44. The heat shield sheet 45 can be disposed so as to cover the entire vacuum heat insulating material 41 and the foam heat insulating material 42. Examples of the heat shield sheet 45 include a multilayer sheet including a metal foil, a vapor deposition sheet having a vapor deposition layer formed on one surface of a resin sheet, and the like.

As shown in FIG. 7A, the vacuum heat insulating material 41 is composed of a core material 41a and an exterior material 41b having a gas barrier property, and is a heat insulation material obtained by decompressing the inside of the exterior material 41b. .. FIG. 7B shows another example of the vacuum heat insulating material 41. In FIG. 7A, voids are formed at both ends inside the vacuum heat insulating material 41, but in FIG. 7B, voids are not formed. The void may or may not be generated depending on the manufacturing method of the vacuum heat insulating material 41.

As the core material 41a, a material used for a core material of a conventionally known vacuum heat insulating material can be used, and examples thereof include powder such as silica, foam such as urethane polymer, and fiber such as glass wool. You may use a porous body.

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

As described above, the panel structure includes a heat insulating panel including a heat insulating portion including a vacuum heat insulating material in consideration of heat insulating properties and a heat insulating portion not including the vacuum heat insulating material, and a panel which is not such a heat insulating panel. In any case, in order to maintain a certain level of heat insulation performance required for the panel container 30, the panel thickness range is preferably 5 mm to 150 mm. Further, the thickness range of the panel is more preferably 10 mm to 100 mm, further preferably 20 mm to 60 mm. If the thickness of the panel is in the range of 5 mm to 150 mm, it can sufficiently cope with the variety of storage temperature and storage time required for luggage and provides a certain rigidity, so that the panel is not damaged by external force. Can be difficult. Further, when the thickness range of the panel is 10 mm to 100 mm, the volume occupied by the panel container in the assembled state can be suppressed to be small and the required rigidity can be secured while maintaining sufficient heat insulation performance. If the range of the height is 20 mm to 60 mm, it is possible to further maintain both the heat insulation performance and the compactness of the assembled panel container, and to obtain stable rigidity. It should be noted that such a panel is made of a single plate-shaped member having rigidity so that it will not be deformed flexibly during use.

(D) Structure of Each Panel The front panel 12, the back panel 13, the first side panel 14, the second side panel 15, the top panel 11, and the bottom panel 16 will be described.

(I) Front panel As shown in FIG. 2, in the assembled state, the front panel 12 is a panel arranged on the most +X direction side of the panel container 30, and the panels are frequently opened and closed for loading and unloading. This is the expected panel. The front panel 12 is disposed below the top panel 11 and above the bottom panel 16, with the main surface of the front panel 12 oriented parallel to the Z direction. The main surface of the front panel 12 is substantially orthogonal to the main surface of the top panel 11, and is also substantially orthogonal to the main surface of the bottom panel 16. Further, the front panel 12 is disposed between the first side panel 14 and the second side panel 15, the main surface of the front panel 12 is substantially orthogonal to the main surface of the first side panel 14, and It is also substantially orthogonal to the main surface of the second side panel 15. The front panel 12 is arranged on the +X direction side of the back panel 13, and the main surface of the front panel 12 is substantially parallel to the main surface of the back panel 13.

As shown in FIG. 3, in the front panel 12, a first front partial panel 12a, a second front partial panel 12b, and a third front partial panel 12c are arranged in order from the −Y direction side, and the +Z direction side. When viewed from above, the first front partial panel 12a can be opened by rotating clockwise with respect to the first side panel 14 via the first front hinge member 22a. Similarly, the second front partial panel 12b and the third front partial panel 12c are also different from the first front partial panel 12a and the second front partial panel 12b, respectively, in the second front hinge member 22b and the third front hinge member 22c. It can be opened clockwise by rotating it. As a result, in the folded state, as shown in FIG. 1, the first front partial panel 12a is arranged on the +X direction side of the first side panel 14, and the second front partial panel 12b and the third front partial panel 12c are arranged. Are folded so as to overlap each other, and each is arranged on the −Y direction side of the first side panel 14. At this time, the second front partial panel 12b and the third front partial panel 12c are folded and arranged around the outer side of the first side frame 51, and are substantially parallel to the first side panel 14.

As described above, in the folded state, the second front partial panel 12b and the third front partial panel 12c are arranged outside the first side frame 51, that is, on the −Y direction side, so that the storage space 20 for storing a load is formed. It can be secured widely.

The width of the first front partial panel 12a in the Y direction when the panel container 30 is in the assembled state is shorter than the width of the second front partial panel 12b and the third front partial panel 12c in the Y direction. The width of the front partial panel 12b in the Y direction is substantially equal to or longer than the width of the third front partial panel 12c in the Y direction. The width of the second front partial panel 12b and the third front partial panel 12c in the Y direction is substantially the same as the width of the first side frame 51 in the X direction or longer than the width of the first side frame 51 in the X direction. Is becoming

The front panel 12 is detachably connected to the top panel 11 adjacent to the upper side by a detachable member (not shown). Specifically, the second front partial panel 12b and the third front partial panel 12c are detachably connected to the top panel 11 by a removable member such as a surface fastener.

The front panel 12 is detachably connected to a bottom panel 16 adjacent to the lower side by a detachable member (not shown). Specifically, the second front partial panel 12b and the third front partial panel 12c are detachably connected to the bottom panel 16 by a detachable member such as a surface fastener. Further, the front panel 12 is detachably connected to the second side panel 15 adjacent to the +Y direction side by a detachable member (not shown).

(Ii) Rear Panel In the assembled state, the rear panel 13 is arranged on the −X direction 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 of the panel container 30. It is a panel. Similar to the front panel 12, the rear panel 13 is located below the top panel 11 and above the bottom panel 16, and the main surface of the rear panel 13 is arranged in a direction parallel to the Z direction. ing. The rear panel 13 is in foldable contact with the adjacent top panel 11, bottom panel 16, and second side panel 15 to ensure the airtightness of the accommodation space 20 when the front panel 12 is closed.

FIG. 8 is a perspective view showing a state in which the front panel 12 and the bottom panel 16 are folded and the rear panel 13 is partially opened in the carriage 100. 9 is a perspective view showing a state in which the front panel 12, the bottom panel 16 and the back panel 13 are folded and the top panel 11 is partly opened in the transportation cart 100. FIG. 10 is a perspective view showing a state in which the front panel 12, the bottom panel 16, the rear panel 13, the top panel and the bottom plate 58 are folded in the carriage 100.

As shown in FIG. 8, in the rear panel 13, a first rear partial panel 13a, a second rear partial panel 13b, and a third rear partial panel 13c are arranged in order from the −Y direction side. The partial panel 13a is fixed to the first side panel 14 and does not move, and the second rear partial panel 13b has the first rear hinge member 23a relative to the first rear partial panel 13a when viewed from the +Z direction side. It can be opened by rotating it counterclockwise through. Further, the third rear partial panel 13c can be opened by rotating clockwise with respect to the second rear partial panel 13b via the second rear hinge member 23b.

As a result, in the folded state, as shown in FIG. 9, the second rear partial panel 13b and the third rear partial panel 13c are folded so as to overlap each other on the −X direction side of the first rear partial panel 13a, and respectively. Are arranged on the −X direction side of the first side panel 14. Thus, folding the rear panel 13 in a partially opened state is an essential condition for nesting a plurality of folded carts 100, as will be described later. Further, when there is no need for nesting, the part on the rear panel 13 side does not necessarily have to be open in this way. Further, in the present embodiment, the back panel 13 has a form in which three partial panels are connected, but the number of partial panels may be two or four or more.

The widths in the Y direction of the first rear surface partial panel 13a, the second rear surface partial panel 13b, and the third rear surface partial panel 13c when the panel container 30 is in the assembled state are substantially the same, but they are folded. This is because it is considered to make the area of the open portion on the back side as large as possible.

Similarly to the front panel 12, the rear panel 13 is also attached to and detached from the top panel 11 adjacent to the upper side, the bottom panel 16 adjacent to the lower side, and the second side panel 15 adjacent to the +Y direction side, which are not shown. The members are detachably connected.

(Iii) First Side Panel The first side panel 14 is a panel adjacent to the first side frame 51 and arranged on the +Y direction side of the first side frame 51. Similar to the front panel 12 and the back panel 13, the first side panel 14 is below the top panel 11 and above the bottom panel 16, and the main surface of the first side panel 14 is in the Z direction. It is placed in a direction parallel to. The first side surface panel 14 is composed of a single plate-shaped member. The first side surface panel 14 may be detachably engaged with the first side frame 51, or may be fixed in a non-detachable manner. The first side panel 14 is connected to the front panel 12, the bottom panel 16 and the top panel 11 by a flexible member, and is also non-foldably connected to the first rear partial panel 13a of the rear panel 13. ing. This ensures the airtightness of the accommodation space 20 when the front panel 12 is closed.

(Iv) Second Side Panel The second side panel 15 is a panel adjacent to the second side frame 52 and arranged on the +Y direction side of the second side frame 52. Similarly to the first side panel 14, the second side panel 15 is below the top panel 11 and above the bottom panel 16, and the main surface of the second side panel 15 is substantially in the Z direction. They are arranged in parallel. The second side panel 15 is composed of a single plate-shaped member, like the first side panel 14. It is common with the first side panel 14 that the second side panel 15 may be detachably engaged with the second side frame 52 or may be fixed in a non-removable manner. The second side panel 15 is detachably connected to all of the adjacent front panel 12, back panel 13, top panel 11 and bottom panel 16 to improve the workability of folding and the compactness of the folded panel. Have secured.

(V) Top panel As shown in FIG. 1, the top panel 11 is disposed above the front panel 12, the back panel 13, the first side panel 14, and the second side panel 15 in the panel container 30. The main panel of the top panel 11 is arranged so that its main surface is substantially parallel to the horizontal plane. The top panel 11 is detachably connected to the front panel 12, the back panel 13 and the second side panel 15, and by folding workability and by opening the front panel 12 and the top panel 11 at the same time, The convenience of loading and unloading luggage is ensured.

As shown in FIG. 9, the top panel 11 includes a first top panel 11a and a second top panel 11b, which are arranged side by side in this order from the −Y direction side. When viewed from the +X direction side, can be opened counterclockwise by rotating with respect to the first side surface panel 14 via the first top surface hinge member 21a. Further, the second top surface partial panel 11b can be opened by rotating clockwise with respect to the first top surface partial panel 11a via the second top surface hinge member 21b.

Usually, the tip portion on the +Y direction side of the second top surface partial panel 11b is mounted so as to cover above the second side surface panel 15 so as not to drop downward. Therefore, in order to open this, as shown in FIG. 9, once, the first top surface partial panel 11a and the second top surface partial panel 11b are bent so that they are convex upward, and the second top surface partial panel is bent. The +Y direction side end of 11b is displaced so as to be on the −Y direction side with respect to the second side surface panel 15, and then the front end can be bent downward to open smoothly.

As a result, in the folded state, as shown in FIG. 10, the second top surface partial panel 11b is folded in a side-by-side relationship with the first side surface panel 14 and the bottom surface panel 16 described later so as to be substantially parallel thereto. Further, the first top surface partial panel 11a is temporarily bent at the time of folding, but after folding, the first top surface partial panel 11a is arranged so as to be substantially vertical to the first side panel 14 and the rear panel 13 as in the assembled state.

(Vi) Bottom Panel The bottom panel 16 is a panel arranged below the front panel 12, the back panel 13, the first side panel 14, and the second side panel 15. The bottom panel 16 is arranged such that the main surface of the bottom panel 16 is substantially parallel to the horizontal plane, above the bottom plate 58 of the carriage main body 50, and between the first side frame 51 and the second side frame 52. Has been done. The bottom panel 16 is composed of a single plate-shaped member and is detachably connected to the front panel 12, the second side panel 15 and the back panel 13, so that the housing space 20 when the front panel 12 is closed. The airtightness is secured. The bottom panel 16 is detachably connected to the first side panel 14 at the end on the −Y direction side by a flexible member, and as shown in FIG. 8, the bottom panel 16 rotates around the X axis at the end. It can be rotated. By thus rotating and folding, the bottom panel 16 can lean against the first side panel substantially in parallel. The bottom panel 16 may be removably coupled to all other adjacent panels.

It should be noted that the bottom panel 16 is more likely to receive a load load than other panels due to direct contact with luggage, so a reinforcing plate having appropriate strength may be laid on the bottom panel 16. Examples of this include plastic cardboard.

(E) Folding and Assembly of Transporting Cart Next, a folding method and an assembling method of the transporting cart 100 will be described with reference to the drawings.

(I) Folding of the carriage for transportation The example of the method for folding the carriage for transportation 100 according to the present embodiment will be described. First, as shown in FIG. 2, the front panel 12 of the carriage 100 in the assembled state is folded. That is, as shown in FIG. 3, first, a direction in which the third front partial panel 12c is clockwise when viewed from the +Z direction with respect to the second front partial panel 12b via the third front hinge member 22c. Open by rotating to. Further, the second front partial panel 12b is opened by rotating the second front partial panel 12b with respect to the first front partial panel 12a in the clockwise direction when viewed from the +Z direction.

Similarly, the first front partial panel 12a is opened by rotating the first front partial panel 12a with respect to the first side panel 14 in the clockwise direction when viewed from the +Z direction, via the first front hinge member 22a. When the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are fully opened, the three partial panels are -Y more than the first side panel 14 as shown in FIG. The second front partial panel 12b and the third front partial panel 12c overlap each other in the direction side, and are housed in an arrangement in which the first side panel 14 and main surfaces thereof are substantially parallel to each other.

Then, as shown in FIG. 8, the bottom surface panel 16 is rotated in a counterclockwise direction when viewed from the +X direction side with the end portion on the −Y direction side as a rotation axis to lift the bottom surface panel 16. The panel 16 is arranged so as to be aligned with the first side surface panel 14 with the first side frame 51 interposed therebetween, and their main surfaces are substantially parallel to each other.

Further, the back panel 13 is folded following the above. That is, the third rear partial panel 13c is opened by rotating the third rear partial panel 13c in the clockwise direction when viewed from the +Z direction with respect to the second rear partial panel 13b. Similarly, the second rear partial panel 13b is opened by rotating the second rear partial panel 13b through the first rear hinge member 23a in the counterclockwise direction when viewed from the +Z direction with respect to the first rear partial panel 13a. When the second rear partial panel 13b and the third rear partial panel 13c are fully opened, these two partial panels sequentially overlap with each other on the −X direction side of the first rear partial panel 13a, as shown in FIG. The three partial panels are housed in an arrangement in which the principal surfaces of the three partial panels are substantially parallel to each other.

Next, as shown in FIG. 9, the top panel 11 is folded. That is, the first top surface partial panel 11a is rotated through the first top surface hinge member 21a by a minute amount in the direction counterclockwise when viewed from the +X direction with respect to the first side surface panel 14. Open by. Similarly, the second top surface partial panel 11b is rotated through the second top surface hinge member 21b by a minute amount in the clockwise direction when viewed from the +X direction with respect to the first top surface partial panel 11a. To open.

As a result, the first top surface partial panel 11a and the second top surface partial panel 11b form a convex shape upward when viewed from the +X direction, and the tip of the second top surface partial panel 11b on the +Y direction side. The part is displaced from the second side panel 15 toward the −Y direction side. Next, the second top surface partial panel 11b is further rotated through the second top surface hinge member 21b in a direction clockwise with respect to the first top surface partial panel 11a when viewed from the +X direction. As a result, the second top surface partial panel 11b is arranged adjacent to the bottom surface panel 16 and their main surfaces are arranged substantially parallel to each other.

After that, as shown in FIG. 10, the bottom plate 58 is rotated in a clockwise direction when viewed from the +X direction side with the end portion on the +Y direction side as a rotation axis to lift the bottom plate 58, so that The two side frames 52 are sandwiched between the second side panel 15 and the second side panels 15, and the main surfaces of the second side panel 15 are arranged substantially parallel to each other.

Due to the above, as shown in FIG. 10, the carriage 100 has panel groups around the first side panel 14 and the first side frame 51 and around the second side panel 15 and the second side frame 52, respectively. It is possible to form a folded state in which a large space is formed near the center in the Y direction of the carriage 100. The front panel 12 is on the −Y direction side of the first side panel 14 and the first side frame 51, and the bottom panel 16 and the top panel 11 are on the +Y direction side. Is formed. Further, the bottom plate 58 is overlapped on the −Y direction side of the second side panel 15 and the second side frame 52 to form a second panel group G2 which is one panel group. Thus, the panel group is not a panel strictly speaking, but is a concept including a bottom plate.

At this time, it depends on the structure and size of the carriage main body 50 of the carriage 100, the arrangement of the rear panel 13 of the panel container 30 when folded, and the thickness and arrangement of the first panel group and the second panel group described above. If these are proper conditions, as shown in FIGS. 12 and 13, three transport carriages 100A, 100B, and 100C having the same structure as the transport carriage 100 of the present embodiment are connected to each other. It is possible to stack them by slightly shifting them while pointing the same direction, that is, nesting. FIG. 12 is a front view showing a state in which three transportation carts are nested, and FIG. 13 is a plan view. As described above, when the plurality of transport carriages can be nested, the transport carriage when not in use can be compactly stored.

Further, even if it is not necessary to perform nesting, by stacking the panels 11 to 16 of the panel container 30 and the bottom plate 58 as close as possible to the periphery of the pair of side frames 51 and 52 of the carriage main body 50 to collect them compactly. A wide working space can be secured in the vicinity of the center in the Y direction of the carriage 100, and workability in storage, movement, and assembly of the carriage 100 when not in use can be improved.

The folding method described above is merely an example in the present embodiment, and the order is not necessarily the same. In the above description, the front panel 12, the bottom panel 16, the back panel 13, the top panel 11 and the bottom plate 58 are folded in this order, but for example, this is the front panel 12, the back panel 13, the bottom panel 16, the top panel. The face panel 11 and the bottom plate 58 may be arranged in this order, or the front panel 12, the bottom panel 16, the top panel 11, the bottom plate 58 and the back panel 13 may be arranged in this order.

(Ii) Assembly of Transporting Cart The assembly of the transporting cart 100 of the present embodiment can be realized by performing the reverse operation of the folding method described above. That is, first, as shown in FIG. 9, the bottom plate 58 is rotated and lowered, and the protruding portion 82, which is the tip portion on the −Y direction side, is arranged so as to be mounted above the base portion 81. Next, the top panel 11 is lifted up and held so that the tip portion in the +Y direction is mounted above the second side panel 15, and then, as shown in FIG. 8, the back panel 13 is assembled to form the third panel. The rear partial panel 13c is arranged so that the front end of the rear partial panel 13c contacts the second side panel 15.

Further, as shown in FIG. 1, the bottom panel 16 is lowered downward, and finally, as shown in FIGS. 3 and 2, the front panel 12 is closed to form a panel container 30 having a substantially rectangular parallelepiped shape and airtightness. Can be assembled, and the assembly of the carriage 100 is completed. Needless to say, when assembling the carriage 100, there may be variations in the order of the panels as in the case of folding.

(F) Arrangement and Dimensional Relationship between Panel Group and Bottom Plate Next, the arrangement and dimensional relationship between the panel group and the bottom plate of the carriage 100 will be described. 11A and 11B are a front view and a plan view of the transportation cart 100 in the folded state shown in FIG. 10, FIG. 11A being a front view and FIG. 11B being a plan view. Here, the thickness along the longitudinal direction of the first panel group G1 formed from the front panel 12, the first side panel 14, the first side frame 51, the bottom panel 16 and the top panel 11, that is, the Y direction is T1. And Further, the thickness of the second panel group G2 formed of the bottom plate 58, the second side frame 52, and the second side panel 15 along the longitudinal direction is T2. The first panel group or the second panel group may have a gap between the panels formed therein, but T1 or T2 is the most significant of these panels or bottom plates including such a gap. The distance along the longitudinal direction from the end on the Y direction side to the end on the +Y direction side is shown.

In addition, in the second panel group G2 of the present embodiment, the bottom plate 58 forms the end portion on the −Y direction side, but the base plate 58 has the base portion 81 formed at a thick portion and other portions. A part with a small thickness is mixed. In such a case, the thickness T2 is calculated assuming that the end is the thickest and the end of the tip protruding in the -Y direction is the end of the second panel group G2.

Further, the distance from one end, which is the most end on the −Y direction side, of the connecting member 53 excluding the wheels to the end on the +Y direction side of the base portion 81 protruding below the central frame 57 is D1. If the bottom plate 58 is attached on the opposite side in the Y direction from the present embodiment, conversely to the above, from the one end which is the most end on the +Y direction side of the connecting member 53 excluding the wheels, the center The distance to the −Y direction side end of the base portion 81 protruding below the frame 57 is D1. That is, D1 is defined when the arrangement of the base 81 in the Y direction is closer to one of the ends of the connecting member 53 in the Y direction.

Further, the first panel group G1 not including the bottom plate 58 is a reference panel group, and one of the first side frame 51 and the second side frame 52 included in the reference panel group is a reference side frame. The shortest distance along the longitudinal direction between the frame and the bottom plate 58 is E1, and the shortest distance along the longitudinal direction between the reference side frame and the end of the reference panel group on the bottom plate 58 side is F1. That is, in the present embodiment, from the end on the +Y direction side of the first side frame 51, which corresponds to the reference side frame, to the second top surface partial panel 11b, which is the end on the +Y direction side of the first panel group G1, that is, the top. The distance to the +Y direction side end of the face panel 11 is E1, and the distance from the +Y direction side end of the first side frame 51 to the −Y direction side end of the bottom plate 58 is F1.

Further, thicknesses along the longitudinal direction of the bottom panel 16 and the top panel 11 arranged adjacent to the +Y direction side of the first side frame 51 are q1 and p1, respectively.

Under the above conditions, it is preferable that T1 is equal to D1 or T1 is greater than D1 as a condition for nesting the carriages 100 after folding so as to save space as much as possible. In this embodiment, T1 is larger than T2 and T1 is larger than D1. In this case, as shown in FIG. 12, three transport carriages 100A, 100B, and 100C having the same configuration as the transport carriage 100, in particular, while closely adhering the first panel group of each transport carriage to each other without any space therebetween. Since nesting is possible, the volume occupied by the three transport carriages when nesting can be minimized, and maximum space saving can be achieved.

At this time, if D1 is larger than T1, even if the size and thickness of each panel of the panel container 30 are properly determined from the required storage capacity of the luggage and the heat insulating performance, the transporting cart in the folded state can be used. At the time of nesting, the arrangement interval, that is, the pitch, between the two adjacent transport carriages depends on the distance D1 determined by the positional relationship between one end of the connecting member 53 of the carriage main body 50 and the base portion 81. Therefore, the first panel groups of the transport carriages can be nested only in a separated state, and the maximum space saving can be achieved according to the desired storage capacity of the luggage and the configuration of the panel container 30 determined by the heat insulation performance. Nesting that can be realized cannot be performed.

The above is the same even if T2 is larger than T1, and in this case, it is preferable that T2 is equal to D1 or T2 is larger than D1. The reason is as described above.

The trolley body 50 is rarely designed from the beginning on the assumption that it is used in combination with the panel container 30 as in the first embodiment of the present disclosure, and normally, the luggage is directly mounted on the bottom plate. Designed and mass-produced on the assumption that For this reason, in considering a carrying truck that can secure a desired luggage storage capacity and heat insulation performance, and can be stored as compactly as possible when not in use, the relationship of T1, T2 and D2 described above should be satisfied. It is extremely important to keep in mind. In particular, in the field of logistics related to handling a large number of carriages, the effect of total space saving of the carriages when not in use is great.

Next, the arrangement and dimensional relationship between the panel group and the bottom plate, including the case where nesting of the carriage 100 is not always necessary, will be described. In FIG. 11A, the bottom plate 58 in the assembled state is arranged without overlapping with the first panel group G1, which is the reference panel group in the folded state, when viewed in the longitudinal direction. That is, for example, when viewed from the +X direction side, the first panel group G1 and the bottom plate 58 are arranged so as not to overlap along the Y axis. In other words, the −Y direction side end of the bottom plate 58 and the +Y direction side end of the top panel 11, which is the most +Y direction side end of the first panel group G1, are at the same position on the Y axis. Alternatively, the positions are separated from each other.

Furthermore, regarding E1 and F1 described above, it is preferable that E1 is equal to F1 or E1 is larger than F1. In this embodiment, E1 is larger than F1. In this case, when the bottom plate 58 is rotated clockwise when viewed from the +X direction with the end on the +Y direction side as the rotation axis and lifted up, it is the end on the +Y direction side of the first panel group G1 carelessly. It is possible to prevent interference with the end of the face panel 11 and damage it.

In this respect as well, the size and thickness of each panel of the panel container 30 must be appropriately determined in consideration of the required storage volume of the luggage and the heat insulation performance, and therefore, the main body of the commercially available trolley that does not plan to mount the panel container When the above are combined, it is highly possible that the above conditions are not satisfied. In considering a carrier truck, it is extremely important to take care to satisfy the relationship of E1 and F1 as described above at a minimum. However, when the thickness of the panel and the like are determined only from the required storage capacity of the luggage and the heat insulation performance, for example, E1 may become extremely large. As an example, there is a case where a foamed heat insulating material or the like having an increased thickness is used for the bottom panel 16 or the top panel 11 due to cost factors or the like, instead of using the vacuum heat insulating material.

In this case, since F1 needs to be equal to or larger than E1, the position of the tip portion of the bottom plate 58 on the −Y direction side is further closer to the +Y direction side. That is, the region where the bottom plate 58 is not arranged expands below the first panel group G1. When the panel container 30 is assembled in this configuration, the bottom plate 58 for supporting the bottom panel 16 does not exist up to the tip portion of the bottom panel 16 on the −Y direction side. The withstand load becomes insufficient, and the bottom panel 16 may be deformed depending on the load of the luggage to be loaded in the panel container 30 and the arrangement position.

At this time, the airtightness of the panel container 30 cannot be maintained, and the heat insulation performance may be deteriorated. Alternatively, when a vacuum heat insulating material is used for the bottom panel 16, the vacuum heat insulating material inside the bottom panel 16 may be damaged due to deformation, which may reduce the heat insulating performance.

Therefore, in order to maintain the airtightness of the panel container 30, the tip portion of the bottom plate 58 is arranged in the −Y direction side as much as possible, and when the bottom plate 58 is rotationally moved, it interferes with the first panel group G1. In order to suppress the above, for example, in the present embodiment, it is important to reduce the panel thickness of the bottom panel 16 and the top panel 11 and prevent the heat insulating performance of the panel from being deteriorated. That is, for the thicknesses q1 and p1 along the longitudinal direction of the bottom panel 16 and the top panel 11 described above, E1 is equal to the sum of p1 and q1, or E1 is greater than the sum of p1 and q1. Is preferred. In order to realize this, for example, it is conceivable that the bottom panel 16 or the top panel 11 is a heat insulating panel including a heat insulating portion including a vacuum heat insulating material.

2. Second Embodiment (a) Configuration of Transporting Cart Next, the configuration of the transporting cart of the second embodiment of the present disclosure will be described with reference to FIGS. 14 and 15. FIG. 14 shows a carriage 101 according to the second embodiment of the present disclosure, in which a panel container 31 is mounted on an upper side of a carriage body 50, and the front panel 12, the bottom panel 16, and the rear panel 13 of the panel container 31 are mounted. FIG. 8 is a perspective view showing a state in which the top panel 11 and the bottom plate 58 are folded. FIG. 15 is a front view of the carriage 101 of FIG. 14 viewed from the +X direction side.

The transportation cart 101 of the second embodiment is different from the transportation cart 100 of the first embodiment in that the panel arranged on the most +Y direction side of the first panel group G1 is not the top panel 11 but the bottom panel. It may be 16. Further, the folding order of the panel container 31 also differs in that the top panel 11 is folded before the bottom panel 16 is folded. The width of the first top surface partial panel 11a of the top panel 11 along the Y direction is shorter than that of the first embodiment by the thickness of the bottom panel 16, and the width is the same as that of the first embodiment. The width along the Y direction of the 2 top surface partial panel 11b is lengthened. When the top panel 11 is folded downward, a gap is unlikely to be formed between the first side frame 51 and the second top panel, and the thickness T1 of the first panel group G1 is made as thin as possible. Is. In other respects, there is no difference from the carriage 100 of the first embodiment.

(B) Arrangement and Dimensional Relationship between Panel Group and Bottom Plate The arrangement and dimensional relationship between the panel group and the bottom plate of the carriage 101 is similar to the contents of the first embodiment. Here, the thickness along the longitudinal direction of the first panel group G1 formed from the front panel 12, the first side panel 14, the first side frame 51, the top panel 11 and the bottom panel 16, that is, the Y direction is T3. The thickness of the second panel group G2 formed of the bottom plate 58, the second side frame 52 and the second side panel 15 in the longitudinal direction is T4.

Further, the distance from one end of the connecting member 53 excluding the wheel, which is the most end on the −Y direction side, to the end on the +Y direction side of the base portion 81 protruding below the central frame 57 is D2. If the bottom plate 58 is attached to the side opposite to the Y direction in this embodiment, the same treatment as in the first embodiment is performed.

Further, the first panel group G1 not including the bottom plate 58 is a reference panel group, and one of the first side frame 51 and the second side frame 52 included in the reference panel group is a reference side frame. The shortest distance along the longitudinal direction between the frame and the bottom plate 58 is E2, and the shortest distance along the longitudinal direction between the reference side frame and the end of the reference panel group on the bottom plate 58 side is F2. That is, in the present embodiment, from the +Y direction side end of the first side frame 51, which corresponds to the reference side frame, to the +Y direction side end of the bottom panel 16, which is the +Y direction side end of the first panel group G1. Is E2, and the distance from the end of the first side frame 51 on the +Y direction side to the end of the bottom plate 58 on the −Y direction side is F2.

Further, the thicknesses along the longitudinal direction of the top panel 11 and the bottom panel 16 arranged adjacent to the +Y direction side of the first side frame 51 are p2 and q2, respectively.

Under the above conditions, it is preferable that T3 is equal to D2 or T3 is greater than D2 as a condition for nesting the carriages 101 after folding so as to save space as much as possible. In this embodiment, T3 is larger than T4 and T3 is larger than D2. In this case, as in the case of the first embodiment, it is possible to nest a plurality of transport carriages, in particular while closely contacting the first panel group of each transport carriage with each other without a gap, so that a plurality of nesting carriages The volume occupied by the trolley for transportation can be minimized, and maximum space saving can be achieved. Further, even if T4 is larger than T3, the same is true. In this case, it is preferable that T4 is equal to D2 or T4 is larger than D2.

Regarding E2 and F2, it is the same as the relationship between E1 and F1 in the first embodiment in that E2 is preferably equal to F2 or E2 is larger than F2. Further, in the present embodiment, for the thicknesses p2 and q2 along the longitudinal direction of the top panel 11 and the bottom panel 16, E2 is equal to the sum of p2 and q2, or E2 is the sum of p2 and q2. It is similar to the relationship of E1, p1 and q1 in the first embodiment in that it is preferably larger than the above.

As in the present embodiment, the panel arranged on the most +Y direction side of the first panel group G1 is not the top panel 11 but the bottom panel 16, so that, for example, in addition to the front panel 12 of the panel container 31, The convenience is improved when it is desired to load luggage while the face panel 11 is also folded. That is, the top panel 11 can be opened with the bottom plate 58 and the bottom panel 16 in the assembled state, and it is difficult to move the large and heavy luggage that is difficult to put in and out only by opening the front panel 12. Become. Further, when E2 and F2 are the same, even if they interfere with each other due to dimensional error or play of the panel or the bottom plate, the bottom plate 58 is the panel most likely to interfere, and the bottom panel 16 is Usually, since it is often reinforced to increase load bearing capacity, the risk of damage to the panel at the time of interference can be reduced.

3. Third Embodiment (a) Configuration of Transporting Cart Next, the configuration of the transporting cart of the third embodiment of the present disclosure will be described with reference to FIGS. 16 and 17. FIG. 16 shows a carriage 102 according to the third embodiment of the present disclosure, in which a panel container 32 is mounted on an upper side of a carriage body 50, and the front panel 12, the bottom panel 16, and the rear panel 13 of the panel container 32 are mounted. FIG. 8 is a perspective view showing a state in which the top panel 11 and the bottom plate 58 are folded. FIG. 17 is a front view of the carriage 102 of FIG. 16 as seen from the +X direction side.

The carrying cart 102 of the third embodiment is different from the carrying cart 100 of the first embodiment in that the first panel group G1 does not include the top panel 11, and the second panel group G2 does not. The top panel 11 may be included. The top panel 11 is detachably connected to the front panel 12, the back panel 13, and the first side panel 14, and the third top panel 11c and the fourth top panel 11d are in the -Y direction. They are arranged side by side from the side. When viewed from the +X direction side, the third top surface partial panel 11c can be rotated counterclockwise and opened with respect to the fourth top surface partial panel 11d via the third top surface hinge member 21c, The fourth top surface partial panel 11d can be opened by rotating clockwise with respect to the second side surface panel 15 via the fourth top surface hinge member 21d. Usually, the tip portion of the third top surface partial panel 11c on the −Y direction side is mounted so as to cover above the first side surface panel 14 so as not to drop downward.

Therefore, in order to open this, once bend the third top surface partial panel 11c and the fourth top surface partial panel 11d so as to be convex upwards, and then to the −Y direction side of the third top surface partial panel 11c. It is possible to open it smoothly by displacing the tip end portion of the first side panel 14 on the +Y direction side with respect to the first side surface panel 14 and then bending the tip end portion downward.

As a result, in the folded state, as shown in FIG. 16, the third top surface partial panel 11c is folded along with the second side surface panel 15 and the bottom plate 58 so as to be substantially parallel to them. Further, the fourth top surface partial panel 11d is temporarily bent at the time of folding, but after folding, it is arranged so as to be substantially vertical to the second side panel 15 and the rear panel 13 as in the assembled state.

The order of folding the panel container 32 is the front panel 12, the bottom panel 16, the back panel 13, the bottom plate 58, and the top panel 11. However, since the back panel 13 has little influence on other panels, the back panel 13 may be folded at any timing.

(B) Arrangement and Dimensional Relation between Panel Group and Bottom Plate The arrangement and dimensional relation between the panel group and the bottom plate of the carriage 102 are as follows. That is, the thickness of the first panel group G1 formed of the front panel 12, the first side panel 14, the first side frame 51, and the bottom panel 16 in the longitudinal direction, that is, the Y direction is T5, and the third top surface is used. The thickness along the longitudinal direction of the second panel group G2 formed of the top panel 11, which is the partial panel 11c, the bottom plate 58, the second side frame 52, and the second side panel 15 is defined as T6.

Further, the distance from one end of the connecting member 53 excluding the wheel, which is the most end on the −Y direction side, to the end on the +Y direction side of the base portion 81 protruding below the central frame 57 is D3. If the bottom plate 58 is attached to the side opposite to the Y direction in this embodiment, the same treatment as in the first embodiment is performed.

Further, the first panel group G1 not including the bottom plate 58 is a reference panel group, and one of the first side frame 51 and the second side frame 52 included in the reference panel group is a reference side frame. Let E3 be the shortest distance along the longitudinal direction between the frame and the bottom plate 58, and F3 be the shortest distance along the longitudinal direction between the reference side frame and the end of the reference panel group on the bottom plate 58 side. That is, in the present embodiment, from the +Y direction side end of the first side frame 51 corresponding to the reference side frame to the +Y direction side end of the bottom panel 16 that is the +Y direction side end of the first panel group G1. Is E3, and the distance from the end of the first side frame 51 on the +Y direction side to the end of the bottom plate 58 on the −Y direction side is F3.

Under the above conditions, it is preferable that T6 is equal to D3 or T6 is greater than D3 as a condition for nesting the carriages 102 after folding so as to save space as much as possible. In this embodiment, T6 is larger than T5 and T6 is larger than D3. In this case, it is possible to nest the plurality of transport carriages, in particular, while closely adhering the second panel group of each transport carriage to each other without a gap, so that the volume occupied by the plurality of transport carriages when nesting is minimized. Can be realized, and the maximum space saving can be achieved. Further, even if T5 is larger than T6, the same is true. In this case, it is preferable that T5 is equal to D3 or T5 is larger than D3.

Further, regarding E3 and F3, it is preferable that E3 is equal to F3 or that E3 is larger than F3, similar to the relationship between E1 and F1 and the relationship between E2 and F2 in the first and second embodiments. is there.

As in the present embodiment, the top panel 11 is not included in the first panel group G1, and the top panel 11 is included in the second panel group G2, so that the thickness of the first panel group G1 is increased. T5 can be thinned by the thickness of the top panel 11. Further, if the difference between T1 and T2 is large in the configuration of the first panel group and the second panel group as in the first embodiment, the thickness of T1 is reduced and the thickness of T2 is reduced. By increasing the, the thickness of the two panel groups can be balanced. This makes it possible to shorten the arrangement pitch of the transport carriages when nesting, so that the volume occupied by a plurality of transport carriages when nesting can be further minimized and further space saving can be achieved. Can be achieved.

Further, since the top panel 11 is not included in the first panel group G1, F3 becomes equal to the thickness of the bottom panel 16, and the distance can be reduced as compared with other embodiments. Therefore, E3 can also be made small, and while suppressing interference with the first panel group G1 when the bottom plate 58 is rotationally moved, the bottom plate 58 is below the tip portion of the bottom panel 16 on the −Y direction side in the assembled state. Can be placed up to. Thereby, the effect of supporting the bottom panel 16 by the bottom plate 58 is increased, and the airtightness of the bottom panel 16 and the panel container 32 can be improved.

4. Fourth Embodiment (a) Configuration of Transporting Cart Next, the configuration of the transporting cart of the fourth embodiment of the present disclosure will be described with reference to FIGS. 18 and 19. FIG. 18 shows a carriage 103 according to the fourth embodiment of the present disclosure, in which a panel container 33 is mounted on an upper side of a carriage body 50, and the front panel 12, the bottom panel 16, and the rear panel 13 of the panel container 33 are mounted. FIG. 8 is a perspective view showing a state in which the top panel 11 and the bottom plate 58 are folded. FIG. 19 is a front view of the carriage 103 of FIG. 18 viewed from the +X direction side.

The carrying cart 103 of the fourth embodiment is different from the carrying cart 100 of the first embodiment in that the front panel 12 is included in each of the first panel group G1 side and the second panel group G2 side when folded. It can be given. The front panel 12 is foldably connected to each of the first side panel 14 and the second side panel 15, and is divided into two at a substantially central portion in the Y direction and can be opened left and right as a partial panel, that is, a so-called double door structure. Is taking. When the front panel 12 is closed, the left and right partial panels are detachably connected by a detachable member such as a surface fastener (not shown).

In the assembled state, the front panel 12 includes a fourth front partial panel 12d, a fifth front partial panel 12e, a sixth front partial panel 12f, and a seventh front partial panel 12g, which are arranged in order from the −Y direction side. The fifth front partial panel 12e and the sixth front partial panel 12f are detachably connected to each other at a substantially central portion in the Y direction. When viewed from the +Z direction side, the fourth front partial panel 12d can be rotated clockwise with respect to the first side panel 14 via the fourth front hinge member 22d to be opened, and the fifth front partial panel 12d can be opened. 12e can be opened by rotating clockwise with respect to the fourth front partial panel 12d via the fifth front hinge member 22e.

In contrast to this, when viewed from the +Z direction side, the seventh front partial panel 12g is rotated counterclockwise with respect to the second side panel 15 via the seventh front hinge member 22g to open. The sixth front partial panel 12f can be rotated counterclockwise and opened with respect to the seventh front partial panel 12g through the sixth front hinge member 22f.

As a result, in the folded state, as shown in FIG. 18, the fifth front partial panel 12e is folded in the side-by-side relationship with the first side panel 14 so as to be substantially parallel thereto, and the sixth front partial panel 12f is moved to the second side panel 14. Folded in a side-by-side relationship with the side panel 15 so as to be substantially parallel thereto.

The folding order of the panel container 33 is that the front panel 12 is divided into left and right and then folded, and then the bottom panel 16, the back panel 13, the top panel 11 and the bottom plate 58 are folded in this order. However, since the back panel 13 has little influence on other panels, the back panel 13 may be folded at any timing.

(B) Arrangement and Dimensional Relationship between Panel Group and Bottom Plate The arrangement and dimensional relationship between the panel group and the bottom plate of the carriage 103 are as follows. That is, the thickness along the longitudinal direction of the first panel group G1 formed from the front panel 12, which is the fifth front partial panel 12e, the first side panel 14, the first side frame 51, and the bottom panel 16, that is, the Y direction. Is T7, and the thickness along the longitudinal direction of the second panel group G2 formed from the bottom plate 58, the second side frame 52, the second side panel 15 and the front panel 12 which is the sixth front partial panel 12f is T8. To do.

Further, the distance from one end of the connecting member 53 excluding the wheel, which is the most end on the −Y direction side, to the end on the +Y direction side of the base portion 81 protruding below the central frame 57 is D4. If the bottom plate 58 is attached on the opposite side in the Y direction from the present embodiment, the same treatment as in the first embodiment is performed.

Under the above conditions, it is preferable that T8 is equal to D4 or T8 is greater than D4 as a condition for nesting the carriages 103 after folding so as to save space as much as possible. In this embodiment, T8 is larger than T7 and T8 is larger than D4. In this case, it is possible to nest the plurality of transport carriages, in particular, while closely adhering the second panel group of each transport carriage to each other without a gap, so that the volume occupied by the plurality of transport carriages when nesting is minimized. Can be realized, and the maximum space saving can be achieved. Even if T7 is larger than T8, the same is true, and in this case, T7 is preferably equal to D4 or T7 is larger than D4.

As in the present embodiment, both the first panel group G1 and the second panel group G2 are configured to include the front panel 12 that is divided and stored, so that the fourth front partial panel 12d and the seventh front partial panel The width of 12 g along the Y direction can be made shorter than that of the first and second embodiments. Further, by distributing the front panel 12 to each of the first panel group G1 and the second panel group G2, the thickness of both can be balanced. Therefore, since the arrangement pitch of the transport carriages when nesting can be made relatively short, the volume occupied by a plurality of transport carriages when nesting can be minimized, and space saving when not in use Can be realized.

5. Modifications Various modifications and changes are possible without being limited to the above-described embodiment, and these are also within the scope of the present disclosure. Below, some modification examples are given.

(A) Modification (1)
In each of the first to fourth embodiments, the carriage is explained as the carriage main body 50 is a four-wheel cart having four wheels, but as described above, the number of wheels included in the carriage main body. There is no limit to. As an example, a carriage for use with a carriage body that is a nesting six-wheel cart having six wheels will be described. 20A and 20B are a front view and a perspective view of a carriage 104 that uses a carriage body 50A of a six-wheel cart according to Modification Example (1). FIG. 20A is a front view and FIG. It is a figure. As shown in both figures, in the connecting member 53, the first wheel mounting frame 67 and the second wheel mounting frame 68 are arranged in parallel with each other in the X direction in the vicinity of substantially the center in the Y direction below the central frame 57. The third wheel attachment frame 69 is provided, and the fifth wheel 65 and the sixth wheel 66 are attached to the +X direction side end and the −X direction side end of the third wheel attachment frame 69, respectively.

Among these, the first wheel 61, the second wheel 62, the third wheel 63, and the fourth wheel 64, which are respectively arranged at the −Y direction side tip and the +Y direction side tip of the carriage main body 50A, are free wheels. Each of them rotates along a horizontal axle and can be turned by a turning shaft extending in the vertical direction (Z direction). On the other hand, the fifth wheel 65 and the sixth wheel 66, which are arranged near the center in the Y direction, are fixed wheels that rotate along the horizontal axles, respectively, while rotating around the vertical (Z direction) axis. Cannot turn.

It should be noted that the wheels 61 to 66 and the central fixed wheel (the fifth wheel 65 and the sixth wheel 66) and the front and rear are arranged so that the vehicle can stably travel straight when traveling with a loaded object mounted on the carriage 104. Any one of the two free wheels (the first wheel 61 and the second wheel 62, or the third wheel 63 and the fourth wheel 64) may be combined and grounded. In addition, when the load is not placed on the carriage 104, the center fixed wheel (the fifth wheel 65 and the sixth wheel 66) is grounded to facilitate turning and nesting and easy turning. Instead, both the front and rear free wheels (first wheel 61, second wheel 62, third wheel 63, and fourth wheel 64) may be grounded.

In this modification, the configuration of each panel of the panel container, the configuration of the bottom plate 58, and the like are similar to those of the first embodiment, except that the carriage main body 50A has six wheels. Therefore, the thicknesses T1 and T2 of the first panel group G1 and the second panel group G2 described in the first embodiment, and the relationship of E1, F1 and the like determined by the positional relationship between these panel groups and the bottom plate 58 are the same as in the present modification. Since it is directly applied to, the detailed description is omitted.

Also in this modification, it is possible to nest the carriages 104 for transportation after folding so as to save space as much as possible. FIG. 21 is a front view showing a state in which two transport carriages 104A and 104B having the same configuration as the transport carriage 104 are nested with each other. As shown in the figure, if it is noted that the third wheel mounting frame arranged near the center of the carriage main body in the Y direction does not interfere when nesting other transport carriages, each transport carriage's The first panel group or the second panel group can be nested while closely contacting each other without a gap. As a result, the volume occupied by the two transport carriages when nesting can be minimized, and maximum space saving can be achieved. Note that, in this modification, two carrying carriages are nested, but it is also possible to nest three or more carrying carriages by widening the intervals between the wheel mounting frames 67, 69 and 68. In addition, in the case of a large-sized carrier truck, eight or more wheels may be provided.

(B) Modified example (2)
In each of the above-described first to fourth embodiments, the position of the tip portion on the −Y direction side of the bottom plate 58 in the assembled state is above that from the viewpoint of space saving during folding or nesting of the transportation cart. It is closer to the +Y direction than the end of the bottom panel 16 of the mounted panel container on the −Y direction side. That is, the region where the bottom plate 58 is not arranged expands below the first panel group G1. As described above, the load resistance of the bottom panel 16 above the region where the bottom plate 58 is not disposed may be reduced, and the airtightness may be reduced due to the deformation of the bottom panel 16.

With respect to the above, a modified example capable of improving the bottom support effect of the bottom panel 16 on the structural surface of the trolley body side will be illustrated.

FIG. 22 is a perspective view of a carriage main body 50B according to Modification (2). As shown in this figure, the structure of the base portion fixed to the connecting member 53 is different from that of the other embodiments. That is, the base portion 87 of the present modified example includes a base portion 87a that is a flat plate-shaped portion that extends in the X direction below the central frame 57, and a protruding portion 87b that protrudes upward from the base portion 87a. There is. The projecting portion 87b projects further above the upper surface of the central frame 57, and exists only on the +X direction side with respect to the central frame 57.

Since the carriage main body 50B includes such a base portion 87, when the bottom plate 58 is assembled, that is, when the base plate 58 is laid down so as to contact the base portion, the top surface of the bottom plate 58 and the top surface of the protruding portion 87b of the base portion 87. And can form substantially the same plane. In this case, when the bottom panel 16 of the panel container 30 is laid above it, not only the bottom plate 58 but also the base portion 87 can be brought into contact with the bottom panel 16 below and support it. Therefore, compared with the case where the base portion is not provided with such a protruding portion, the load resistance of the bottom panel 16 can be increased, and the deterioration of the airtightness of the panel container due to the deformation of the bottom panel 16 can be suppressed. it can.

In this modification, the protruding portion 87b is arranged only on the +X direction side of the central frame 57 in order to prevent interference with other carriages during nesting, but when nesting is not necessary, The protruding portion 87b may be arranged on the −X direction side of the central frame 57 to further enhance the reinforcing effect of the bottom panel 16.

(C) Modified example (3)
FIG. 23 is a perspective view of a carriage main body 50C according to Modification (3). As shown in the figure, the structure of the base portion fixed to the connecting member 53 is the same as that of the other embodiments, but the structure of the bottom plate 59 is different. That is, the bottom plate 59 of the present modification is configured such that the length along the Y direction can be expanded and contracted in the assembled state. Based on the folded state of FIG. 23, the bottom plate 59 includes a −Z direction side bottom plate body portion 59b and a +Z direction side bottom plate tip portion 59a. The bottom plate tip portion 59a has a protrusion 82 on the −Y direction side. When the cross section cut perpendicular to the Z direction is viewed, the size of the cross section of the bottom plate front end portion 59a is slightly smaller than that of the bottom plate main body portion 59b. As a result, the bottom plate front end portion 59a can be partially accommodated by sliding inside the bottom plate main body portion 59b, and the apparent length of the bottom plate can be expanded or contracted in the Z direction.

Further, the base portion 88 fixed to the lower part of the central frame 57 is wide along the Y direction so that it can come into contact with the protruding portion 82 regardless of whether the bottom plate 59 has the shortest length or the longest length. Has been formed. When actually used in combination with the panel container 30, the bottom plate 59 can be extended and used so as to have the maximum length during assembly. As a result, the effect of supporting the bottom panel 16 of the panel container 30 is increased, and a decrease in the airtightness of the panel container due to deformation of the bottom panel 16 can be suppressed.

On the other hand, when folding the transportation cart, after the panels of the panel container 30 are folded, the length of the bottom plate 59 along the Y direction is shortened so that the bottom plate 59 does not interfere with the first panel group G1. By lifting to the side frame 52 side, the bottom plate 59 can be safely folded while maintaining a sufficient gap with the first panel group G1.

(D) Modified example (4)
FIG. 24 is a perspective view of a carriage main body 50D according to Modification (4). The base portion 89 fixed to the connecting member 53 of the present modification is, unlike the other embodiments and modifications, integrated with the first wheel mounting frame 67A arranged below the tip of the central frame 57 on the −Y direction side. It is configured to In other words, the base portion 89 of this modified example is included in the structure in which the first wheel mounting frame 67A is formed wide along the Y direction, and the first wheel mounting frame 67A itself is the base portion 89. Is also used. Since the first wheel mounting frame 67A that also serves as the base 89 is provided as a wide, substantially flat plate-shaped structure, it is not necessary to provide the base separately from each wheel mounting frame, and the number of parts can be reduced and the structure can be reduced. Has the advantage of being simple. In addition, the wide provision of the first wheel mounting frame 67A along the Y direction in this way is not only the point that the base portion 89 can also be used, but also the structure of the wheel provided below the first wheel mounting frame 67A. It is also advantageous in that it is possible to secure a sufficient space for mounting and accommodating it even when it becomes complicated and large. For example, a case where a switching mechanism for a fixed wheel and a free wheel is provided on the wheel is considered.

In addition to the structure of the first wheel mounting frame 67A that also serves as the base portion 89 of the present modification, a protrusion 87b provided in the base portion 87 of the modification (2) is located on the +X direction side of the central frame 57. The structure may be provided only in the region, or the structure may be provided with the expandable/contractible bottom plate 59 as in the modification (3).

11 top panel 11a first top panel 11b second top panel 11c third top panel 11d fourth top panel 12 front panel 12a first front panel 12b second front panel 12c third Front Part Panel 12d Fourth Front Part Panel 12e Fifth Front Part Panel 12f Sixth Front Part Panel 12g Seventh Front Part Panel 13 Back Panel 13a First Back Part Panel 13b Second Back Part Panel 13c Third Back Part Panel 14th 1 side panel 15 2nd side panel 16 bottom panel 20 accommodation space 21a 1st top hinge member 21b 2nd top hinge member 21c 3rd top hinge member 21d 4th top hinge member 22a 1st front hinge member 22b 2 front hinge member 22c third front hinge member 22d fourth front hinge member 22e fifth front hinge member 22f sixth front hinge member 22g seventh front hinge member 23a first back hinge member 23b second back hinge member 30, 31, 32, 33 Panel container 40 Heat insulating part 41 Vacuum heat insulating material 41a Core material 41b Exterior material 42 Foam heat insulating material 43 Heat insulating surrounding part 44 Heat insulating material protecting member 45 Heat shield sheet 50, 50A, 50B, 50C, 50D Car body 51 First Side frame 52 Second side frame 53 Connection member 54 Connection post 55 Post 56 Cross bar 57 Central frame 58, 59 Bottom plate 59a Bottom plate tip 59b Bottom plate body 61 First wheel 62 Second wheel 63 Third wheel 64 Fourth wheel 65 Fifth wheel 66 Sixth wheel 67, 67A First wheel mounting frame 68 Second wheel mounting frame 69 Third wheel mounting frame 70 Heat storage material storage section 71 Shelf plate 81, 87, 88, 89 Base section 82 Projection section 83 Bottom plate recessed section 84 rotation support part 85 rotation shaft part 86 rotation shaft part storage recess 87a base part 87b protrusion 100, 101A, 101B, 101C, 101, 102, 103, 104, 104A, 104B transporting carriage

Claims (13)

A carriage that can be nested with other carriages,
A bogie body having a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other,
A plurality of panels provided so as to be freely assembled and folded with respect to the trolley body,
The plurality of panels can be in an assembled state in which the plurality of panels are assembled in a box shape, and a folded state in which the plurality of panels can be nested with the other transport carriage by folding the plurality of panels,
In the folded state, at least a part of each panel is folded around the first side frame or the second side frame, so that a first panel group including the first side frame and the second side frame. And a second panel group including
The bogie body includes a bottom plate that can be rotationally moved or detached with respect to the connecting member, and includes a base portion that supports the bottom plate from below in the assembled state,
A direction in which the first side frame and the second side frame are arranged to face each other is a longitudinal direction, and a total thickness of the first panel group along the longitudinal direction and a total thickness of the second panel group along the longitudinal direction. The thicker one of the thicknesses is set to T, and from one end of any one of the connecting members excluding the wheels along the longitudinal direction of the bogie body to an end of the base portion opposite to the one end. Of the distances, the shorter distance is D, T is equal to D, or T is greater than D. A trolley for transportation,
A bogie body having a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other,
A plurality of panels provided so as to be freely assembled and folded with respect to the trolley body,
The plurality of panels can be in an assembled state in which the plurality of panels are assembled in a box shape and a folded state by folding the plurality of panels,
In the folded state, at least a part of each panel is folded around the first side frame or the second side frame, so that a first panel group including the first side frame and the second side frame. And a second panel group including
The trolley body includes a bottom plate that is rotatable with respect to the connecting member, and includes a base portion that supports the bottom plate from below in the assembled state,
A direction in which the first side frame and the second side frame are arranged to face each other is a longitudinal direction, and one of the first panel group and the second panel group that does not include the bottom plate in the folded state is When a reference panel group and a side frame included in the panel group are used as reference side frames, the bottom plate in the assembled state is arranged without overlapping with the reference panel group in the folded state along the longitudinal direction. ,
The shortest distance along the longitudinal direction between the reference side frame and the bottom plate is E, and the shortest distance along the longitudinal direction between the reference side frame and the bottom plate side end of the reference panel group is F. When, E is equal to F, or E is greater than F, the carriage for transportation. The plurality of panels include at least a top panel, a front panel, a back panel, a first side panel on the side of the first side frame, and a second side panel on the side of the second side frame. The carrier truck according to claim 1 or claim 2. The transportation trolley of claim 3, wherein the plurality of panels further comprises a bottom panel. A trolley for transportation,
A bogie body having a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other,
A plurality of panels provided so as to be freely assembled and folded with respect to the trolley body,
The plurality of panels can be in an assembled state in which the plurality of panels are assembled in a box shape and a folded state by folding the plurality of panels,
In the folded state, at least a part of each panel is folded around the first side frame or the second side frame, so that a first panel group including the first side frame and the second side frame. And a second panel group including
The trolley body includes a bottom plate that is rotatable with respect to the connecting member, and includes a base portion that supports the bottom plate from below in the assembled state,
The plurality of panels includes at least a top panel, a front panel, a rear panel, a first side panel on the side of the first side frame, a second side panel on the side of the second side frame, and a bottom panel. Have,
A direction in which the first side frame and the second side frame are arranged to face each other is a longitudinal direction, and one of the first panel group and the second panel group that does not include the bottom plate in the folded state is When a reference panel group and a side frame included in the panel group are used as reference side frames, the bottom plate in the assembled state is arranged without overlapping with the reference panel group in the folded state along the longitudinal direction. ,
When the shortest distance between the reference side frame and the bottom plate along the longitudinal direction is E, the thickness of the top panel is p, and the thickness of the bottom panel is q, E is the sum of p and q. A carriage for which is equal to or E is greater than the sum of p and q. The carriage for transport according to any one of claims 3 to 5, wherein the front panel includes a plurality of foldable front partial panels. The panel group of either one of the first panel group and the second panel group includes the front panel, the bottom panel and the top panel,
The trolley for transportation according to any one of claims 4 to 6, wherein the other panel group includes the bottom plate. Any one of the first panel group and the second panel group includes the front panel and the bottom panel,
The trolley for transportation according to any one of claims 4 to 6, wherein the other panel group includes the bottom plate and the top panel. The trolley for transportation according to claim 6, wherein the front partial panel is included in both the first panel group and the second panel group. 10. The assembly according to any one of claims 1 to 9, wherein the bottom plate of the bogie main body is provided with a protruding portion that partially protrudes downward, and the protruding portion is in contact with the base portion. The trolley for transportation according to the item 1. The trolley for transporting according to any one of claims 1 to 10, wherein the trolley body has two wheels under the first side frame and two wheels under the second side frame, respectively. .. The carriage according to any one of claims 1 to 11, wherein each panel includes a heat insulating panel. The carriage according to claim 12, wherein the heat insulation panel includes a vacuum heat insulating material or a foam heat insulating material.