JP7137780B2 - Transport trolleys and trolleys - Google Patents

Description

The present embodiment relates to a carrier and a carrier that can be nested with another carrier.

2. Description of the Related Art Conventionally, for example, in stores, factories, and the like, carts for transporting loads such as food have been used. Such a carriage for transportation has a carriage having a pair of side frames, and the carriage is equipped with a carriage cover having heat insulating properties in order to insulate or protect a load such as food from heat or cold. be. As such a cart for transportation, for example, the one disclosed in Patent Document 1 is known.

Japanese Unexamined Patent Application Publication No. 2013-233970

However, conventional carriage covers for carriages for transportation are made of, for example, sewn sheet materials, and are generally thin and flexible (see Patent Document 1). For this reason, the conventional trolley cover has a problem that it is difficult to sufficiently improve the heat insulation performance and to sufficiently protect the load inside.

On the other hand, it is conceivable to assemble the heat-insulating panels into a box shape and mount them on a carriage, but in this case, there is a risk that the work of disassembling and folding the heat-insulating panels will be complicated. In particular, when the heat-insulating panels are not in use, it is required that the trucks be compactly stacked and stored (nested). However, when the front side and the back side of the truck are aligned with each other and nested, it is necessary to fold not only the front side but also the back side of the heat insulation panel, and it takes time to assemble and fold the heat insulation panel. Moreover, the structure of the heat insulating panel is complicated, and there is a possibility that the heat insulating performance of the heat insulating panel assembled in a box shape cannot be sufficiently improved.

An object of the present disclosure is to provide a transportation truck and a truck that facilitate assembly and folding of panels, and that can be stored by stacking a large number of other transportation trucks.

A truck for transportation according to the present embodiment includes a truck 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; and at least one of said first side frame and said second side frame is rotatable about a vertical axis between a deployed position and a folded position. there is

In the carriage for transportation according to this embodiment, the connection member has a carriage frame extending in the longitudinal direction of the carriage and a wheel mounting frame connected to the carriage frame and having wheels attached thereto, and the carriage frame is , may be positioned at the center in the width direction of the bogie.

In the cart for transportation according to the present embodiment, the vertical axis may be positioned at the center in the width direction of the cart.

In the carriage for transportation according to this embodiment, the plurality of panels includes at least a top panel, a front panel, a rear panel, a first side panel, and a second side panel, and the first side panel and the second side panel, the side panel fixed to the one side frame may be openable and closable.

In the carriage for transportation according to this embodiment, the connection member has a carriage frame extending in the longitudinal direction of the carriage and a wheel mounting frame connected to the carriage frame and having wheels attached thereto, and the carriage frame is , may be located on the back side of the center of the carriage in the width direction.

In the carriage for transportation according to the present embodiment, the one side frame may be rotatable around a rotating support, and the rotating support may be slidable in the width direction of the carriage.

In the carriage for transportation according to this embodiment, the plurality of panels has a top panel, a front panel, a rear panel, a first side panel, a second side panel, and a bottom panel, and the top panel The face panel may include a plurality of top partial panels foldable about an axis along the longitudinal direction of the truck, and the bottom panel may be foldable about an axis along the longitudinal direction of the truck. .

A bogie according to the present embodiment includes 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. At least one side frame of the second side frames is rotatable about a vertical axis between an unfolded position and a folded position.

In the bogie according to the present embodiment, the connection member has a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels mounted thereon. It may be positioned at the center in the width direction of the truck.

In the truck according to the present embodiment, the vertical axis may be positioned at the center in the width direction of the truck.

In the bogie according to the present embodiment, the connection member has a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels mounted thereon. It may be located on the back side of the widthwise center of the carriage.

In the truck according to the present embodiment, the one side frame may be rotatable around a rotating strut, and the rotating strut may be slidable in the width direction of the truck.

According to the present embodiment, it is possible to assemble and fold the panels, and to provide a truck for transportation that can be stacked with a number of other trucks for transportation.

FIG. 1 is an exploded perspective view showing a state in which each panel of the cart for transportation according to one embodiment is removed. FIG. 2 is a perspective view showing the carriage for transportation according to one embodiment, in which each panel is in an unfolded state. FIG. 3 is a perspective view showing the carriage for transportation according to one embodiment, in which each panel is in a folded state. FIGS. 4(a) and 4(b) are perspective views showing a carriage according to an embodiment, in an unfolded state and a folded state, respectively. FIGS. 5(a) to 5(c) are enlarged perspective views showing connecting members of the truck. FIG. 6 is a partially enlarged front view of the bogie. FIG. 7 is a cross-sectional view showing each panel. 8(a) and 8(b) are sectional views showing the vacuum heat insulating material of each panel. FIGS. 9(a) and 9(b) are a plan view and a front view, respectively, showing the state before each panel of the carriage for transportation according to the embodiment is changed from the unfolded state to the folded state. FIGS. 10(a) to 10(c) are plan views showing the process of folding the front panel of the cart according to the embodiment from the unfolded state. 11(a) and 11(b) are respectively a plan view and a front view showing the process of folding the front panel of the carriage for transportation according to the embodiment from the unfolded state. 12(a) and 12(b) are respectively a plan view and a front view showing the process of folding the bottom panel of the carriage for transportation according to the embodiment from the unfolded state. FIGS. 13(a) and 13(b) are a plan view and a front view, respectively, showing a process of folding the bottom plate of the trolley for transportation from the unfolded state to the folded state according to the embodiment. 14(a) and 14(b) are respectively a plan view and a front view showing a process of folding the top panel of the carriage for transportation from the unfolded state to the folded state. 15(a) and 15(b) are respectively a plan view and a front view showing the process of folding the second side panel of the carriage for transportation according to the embodiment from the unfolded state. 16(a) and 16(b) are a plan view and a front view, respectively, showing a process of rotating the second side frame of the carriage for transportation according to the embodiment from the unfolded state to the folded state. 17(a) and 17(b) are plan views showing a state in which a plurality of carriages for transportation are nested. 18(a) and 18(b) are plan views showing a carriage for transportation according to Modification 1. FIG. 19 is an enlarged perspective view showing a connecting member of a truck according to Modification 1. FIG. FIGS. 20(a) to 20(c) are plan views showing the process of folding the trolley for transportation according to Modification 2 from the unfolded state. FIG. 21 is a plan view showing a state in which a plurality of carriages for transportation are nested according to Modification 2. FIG. FIG. 22 is an enlarged perspective view showing a connecting member of a truck according to Modification 2. FIG. FIGS. 23(a) to 23(c) are plan views showing the process of folding the carriage according to Modification 3 from the unfolded state. FIGS. 24(a) to 24(c) are plan views showing the process of folding the carriage for transportation according to Modification 4 from the unfolded state. FIGS. 25(a) to 25(c) are plan views showing the process of folding the trolley for transportation according to Modification 5 from the unfolded state. 26(a) and 26(b) are plan views showing a process of folding the carriage for transportation according to Modification 5 from the unfolded state. FIG. 27 is a plan view showing a state in which a plurality of carriages for transportation according to Modification 5 are nested. 28(a) and 28(b) are enlarged perspective views showing connecting members of a bogie according to Modification 5, respectively. FIGS. 29(a) to 29(c) are plan views showing the process of folding the carriage according to Modification 6 from the unfolded state. 30(a) and 30(b) are plan views showing a process of folding the carriage for transportation according to Modification 6 from the unfolded state. FIGS. 31(a) to 31(c) are plan views showing the process of folding the carriage according to Modification 7 from the unfolded state. 32 is a side view showing a carriage for transportation according to Modification 7. FIG. FIG. 33 is a plan view showing a state in which a plurality of carriages for transportation according to Modification 7 are nested. FIGS. 34(a) to 34(c) are plan views showing the process of folding the carriage for transportation according to Modification 8 from the unfolded state. 35 is a side view showing a carriage for transportation according to Modification 8. FIG. FIG. 36 is a plan view showing a state in which a plurality of carriages for transportation are nested according to Modification 8. FIG.

An embodiment will be described below with reference to the drawings. Each figure shown below is shown typically. Therefore, the size and shape of each part are appropriately exaggerated for easy understanding. In addition, it is possible to modify and implement as appropriate without departing from the technical idea. In addition, in each figure shown below, the same code|symbol is attached|subjected to the same part and detailed description may be partially abbreviate|omitted. In addition, numerical values such as dimensions and material names of each member described in this specification are examples as an embodiment, and are not limited to these, and can be appropriately selected and used. In this specification, terms specifying shapes and geometrical conditions, such as parallel, orthogonal, and perpendicular terms, not only have strict meanings but also include substantially the same states.

Further, in the following embodiments, the "X direction" is a direction parallel to the longitudinal direction of the carriage and parallel to the floor on which the carriage is arranged, and the "Y direction" is the X direction. the direction perpendicular to and parallel to the floor on which the carriage is placed. "Z direction" is a direction parallel to the vertical direction. In addition, "front" refers to the surface perpendicular to the floor and faces the direction in which other carts enter when nesting, and "back" refers to the surface perpendicular to the floor. A face that faces the front. "Top surface" refers to the surface parallel to the floor surface on the upper side of the trolley for transportation, and "bottom surface" refers to the surface parallel to the floor surface on the lower side of the trolley for transportation. refers to the side of The term "side surface" refers to a surface perpendicular to the floor and located on the longitudinal end side of the carriage.

(Construction of carriage for transportation)
The configuration of the carriage for transportation according to the present embodiment will be described with reference to FIGS. 1 to 6. FIG. FIG. 1 is an exploded perspective view showing a state in which each panel of the trolley for transportation according to the present embodiment is removed. FIG. 2 is a perspective view of the carriage for transportation according to the present embodiment in an unfolded state. FIG. 3 is a perspective view of the cart for transportation according to the present embodiment in a folded state. 4(a) and 4(b) are perspective views of the truck. FIGS. 5(a) to 5(c) are enlarged perspective views showing connecting members of the truck. FIG. 6 is a partially enlarged front view of the bogie.

As shown in FIG. 1, the carriage 10 for transportation according to the present embodiment includes a carriage (carriage body) 50 and a plurality of (six in this case) panels provided to the carriage 50 so as to be unfoldable and foldable. 11-16. Among them, the plurality of panels 11 to 16 are unfolded and assembled into a box shape (see FIG. 2), and the folded state in which the panels 11 to 16 can be folded to be nested with other carriages. (see FIG. 3).

The transport trolley 10 is used, for example, in stores, factories, physical distribution processes, etc., when storing or transporting loads that need to be kept cool or warm. In such a transport trolley 10, a storage space 20 (described later) capable of storing a load is surrounded by six panels 11 to 16, so that the temperature change inside the transport trolley 10 is minimized. configured to be suppressed. On the other hand, when the transport trolley 10 is not used, it is possible to store a plurality of transport trolleys 10 compactly by nesting (overlapping) with other same transport trolleys 10. be.

Next, the configuration of the truck 50 according to the present embodiment will be described with reference to FIGS. 4(a) and 4(b). FIG. 4(a) is a perspective view showing the carriage 50, in which the second side frame 52 is in an unfolded state. FIG. 4(b) is a perspective view showing the carriage 50, in which the second side frame 52 is folded.

As shown in FIGS. 4A and 4B, the truck 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. and In this case, the truck 50 has six wheels 61 to 66, and the wheels 61 to 66 are attached downward from the connecting member 53, respectively.

The first side frame 51 is provided at one end in the longitudinal direction (negative side in the X direction) of the carriage 50 and protrudes upward (positive side in the Z direction) from the connecting member 53 . The first side frame 51 includes a lower support portion 54 connected to a connecting member 53, an annular (rectangular) peripheral frame 55 connected to the lower support portion 54, and inside the peripheral frame 55 in the horizontal direction (Y direction). The plurality of horizontal beams 56 are arranged at equal intervals along the vertical direction (Z direction). Two wheels 61 and 62 are provided below the first side frame 51 . A curved portion may be formed at the lower portion of either the front side or the rear side (Y-direction negative side or Y-direction positive side) of the peripheral frame 55 . Alternatively, the other lower end of the peripheral frame 55 on the front side or the back side (the positive side in the Y direction or the negative side in the Y direction) may be extended and connected to the wheel mounting frame 67 . The peripheral frame 55 is not limited to be annular, and may be open upward. Also, the plurality of horizontal beams 56 may be arranged at uneven intervals along the vertical direction (Z direction).

The second side frame 52 is provided at the other end in the longitudinal direction (the positive side in the X direction) of the carriage 50 and protrudes upward (the positive side in the Z direction) from the connecting member 53 . The second side frame 52 includes a rotating support 71 connected to the connecting member 53, an annular (rectangular) peripheral frame 55 connected to the rotating support 71, and a horizontal (Y direction) inside the peripheral frame 55. It has a plurality of crosspieces 56 extending to. The plurality of horizontal beams 56 are arranged at equal intervals along the vertical direction (Z direction). Two wheels 65 and 66 are provided below the second side frame 52 . A curved portion may be formed at the lower portion of either the front side or the rear side (Y-direction negative side or Y-direction positive side) of the peripheral frame 55 .

The rotating support 71 extends along the vertical direction (Z direction). The rotating strut 71 has a lower end connected to the wheel mounting frame 69 and an upper end connected to the peripheral edge frame 55 . In addition, the rotating strut 71 is positioned on the rear side (the positive side in the Y direction) of the wheel mounting frame 69 . Specifically, the rotating strut 71 is positioned between the longitudinal center of the wheel mounting frame 69 and the back panel 13 in the Y direction.

In the present embodiment, the second side frame 52 is rotatable about a vertical axis (Z direction axis) between an unfolded position (see FIG. 4(a)) and a folded position (see FIG. 4(b)). It has become. That is, the second side frame 52 is rotatable with respect to the connecting member 53 around the rotating support 71 . Specifically, the second side frame 52 is parallel to the first side frame 51 in the deployed position (see FIG. 4A). That is, the main surface of the second side frame 52 (the surface surrounded by the peripheral frame 55) is parallel to the YZ plane. On the other hand, in the folded position (see FIG. 4B), the second side frame 52 rotates in a direction orthogonal to the first side frame 51 in plan view. That is, the main surface of the second side frame 52 is parallel to the ZX plane. In addition, the second side frame 52 rotates 90° in a plan view between the unfolded position and the folded position, but it is not limited to this. The rotation angle of the second side frame 52 may be less than 90° or more than 90° in a plan view as long as it can be stacked on another carriage 10 for transportation. When the panels 11 to 16 are not attached, the second side frame 52 may rotate 360° in plan view.

In addition, in the present embodiment, the first side frame 51 is fixed to the connecting member 53 so as not to rotate. However, the present invention is not limited to this, and at least one of the first side frame 51 and the second side frame 52 may be rotatable around the vertical axis (Z direction axis).

The connection member 53 has a substantially king-shaped shape (two “E”s facing each other) in a plan view, and includes a carriage frame (central frame) 57 extending in the longitudinal direction (X direction) of the carriage 50 and a carriage frame. It has three wheel mounting frames 67-69 each connected to 57.

The carriage frame 57 is positioned substantially at the center of the carriage 50 in the width direction (Y direction). The carriage frame 57 has sufficient strength to hold the load of the transportation carriage 10 and its load, and has a narrow width that does not interfere with the nesting of the transportation carriages 10. .

The three wheel mounting frames 67 to 69 each extend in a direction perpendicular to the bogie frame 57 (Y direction). The wheel mounting frames 67 to 69 are composed of a first wheel mounting frame 67 positioned on the side of the first side frame 51 and a second wheel mounting frame 68 positioned between the first side frame 51 and the second side frame 52. , and a third wheel mounting frame 69 located on the second side frame 52 side. As shown in FIG. 5(a), the wheel mounting frames 67 to 69 are fixed to the lower surface of the bogie frame 57 (surface on the negative side in the Z direction). As a result, as shown in FIG. 5(b), the wheel mounting frames 67 to 69 do not interfere with the carriage frame 57 of the other carriage 10 when nesting with another carriage 10 for transportation.

The first wheel mounting frame 67 is provided at one end in the longitudinal direction of the bogie frame 57 (the end on the minus side in the X direction). A first wheel 61 and a second wheel 62 are attached to both ends of the first wheel mounting frame 67 in the longitudinal direction (both ends in the Y direction).

The second wheel mounting frame 68 is provided in the longitudinal central portion (X-direction central portion) of the bogie frame 57 . A third wheel 63 and a fourth wheel 64 are attached to both ends of the second wheel mounting frame 68 in the longitudinal direction (both ends in the Y direction), respectively.

The third wheel mounting frame 69 is provided at the other end in the longitudinal direction of the bogie frame 57 (the end on the plus side in the X direction). A fifth wheel 65 and a sixth wheel 66 are attached to both ends of the third wheel mounting frame 69 in the longitudinal direction (both ends in the Y direction), respectively.

The wheels 61-66 are composed of the first wheel 61, the second wheel 62, the third wheel 63, the fourth wheel 64, the fifth wheel 65 and the sixth wheel 66, as described above. Among these wheels, the first wheel 61, the second wheel 62, the fifth wheel 65 and the sixth wheel 66 are free wheels, and each rotates along a horizontal axle and turns in the vertical direction (Z direction). It is rotatable by an axis. On the other hand, the third wheel 63 and the fourth wheel 64 are fixed wheels, each of which rotates along a horizontal axle but cannot turn around a vertical (Z direction) axis.

In addition, the wheels 61 to 66 are connected to the central fixed wheel (the third wheel 63 and the fourth wheel 64) and the front and rear wheels so that the transport truck 10 can travel straight ahead stably when the load is placed on it. Any one of the free wheels (the first wheel 61 and the second wheel 62, or the fifth wheel 65 and the sixth wheel 66) may be combined to be grounded. Also, when no load is placed on the transport cart 10, the central fixed wheels (the third wheel 63 and the fourth wheel 64) are grounded in order to facilitate turning and nesting, and to make it easier to turn in a small radius. Instead, only the front and rear swivel wheels (the first wheel 61, the second wheel 62, the fifth wheel 65 and the sixth wheel 66) may be grounded. However, the present invention is not limited to this, and the truck 50 may have four wheels 61 , 62 , 65 and 66 and may not have the second wheel mounting frame 68 . In this case, as shown in FIG. 5(c), since the distance between the first wheel mounting frame 67 and the third wheel mounting frame 69 is widened, compared to the case where the second wheel mounting frame 68 is arranged, the The number of transport carts 10 that can be nested can be increased.

A foldable bottom plate 58 is provided on the connecting member 53 . The bottom plate 58 has a substantially rectangular parallelepiped shape, extends between the first side frame 51 and the second side frame 52 in the longitudinal direction (X direction), and extends between the first side frame 51 and the second side frame 52 in the lateral direction (Y direction). It has substantially the same length as the second side frame 52 . Also, the bottom plate 58 has sufficient strength to hold the load of the load of the carriage 10 for transportation.

The bottom plate 58 is movable with respect to the connecting member 53, and has a developed state (see FIGS. 2 and 4(a)) placed on the connecting member 53 and a first side plate 58 lifted with respect to the connecting member 53. It can take a folded state in which it is folded around the frame 51 (see FIGS. 3 and 4(b)). That is, when the panels 11 to 16 are unfolded and assembled into a box-like unfolded state (see FIGS. 2 and 4(a)), the bottom plate 58 is arranged in a horizontal unfolded state. On the other hand, when the panels 11 to 16 are folded to assume the folded state (see FIGS. 3 and 4(b)), the bottom plate 58 is lifted vertically and placed in the folded state.

As shown in FIG. 6, the bottom plate 58 is rotatable around a fulcrum portion 58a provided inside (the positive side in the X direction) of the lower support portion 54 on the first side frame 51 side. The fulcrum portion 58a is positioned below (on the negative side in the Z direction) the bottom panel 16 (described later). In this case, the entire connecting portion (fulcrum portion 58a) connecting the bottom plate 58 and the lower support portion 54 is located outside the panels 11-16. As a result, when the periphery is surrounded by a heat insulating material as will be described later, the connecting portion does not straddle the accommodation space 20 (described later) and the outside air, and the connecting portion functions as a heat bridge. Therefore, it is possible to prevent the heat insulating property of the accommodation space 20 from deteriorating. In addition, there is no risk that the connection portion (fulcrum portion 58a) will interfere with the panels 11 to 16 while the bottom plate 58 is being moved between the folded state and the unfolded state.

(Panel composition)
Next, configurations of the panels 11 to 16 will be described with reference to FIGS. 1 to 3. FIG.

The panels 11 to 16 are provided as a whole so as to be unfoldable and foldable with respect to the carriage 50. As described above, the panels 11 to 16 are unfolded and assembled into a box shape (FIG. 2) and folded to enable nesting. state (FIG. 3).

FIG. 2 shows the panels 11-16 in the unfolded state. As shown in FIG. 2, the panels 11 to 16 have a substantially rectangular parallelepiped shape in the unfolded state. It includes a side panel 15 and a bottom panel 16 . The top panel 11, the first side panel 14, the second side panel 15, the rear panel 13, the front panel 12, and the bottom panel 16 each have a main surface (among the six surfaces that constitute each panel). , the widest pair of surfaces facing each other) each have a substantially rectangular shape. The main surfaces of the front panel 12 and the rear panel 13 have substantially the same size, and the main surfaces of the first side panel 14 and the second side panel 15 have substantially the same size. have a size. Each of the panels 11 to 16 is made of a plate-like member having rigidity and is flexibly not deformed during use.

In the unfolded state, by being surrounded by the six panels 11 to 16, it is possible to form a storage space 20 for storing a load. When these panels 11 to 16 are unfolded, a substantially rectangular parallelepiped accommodation space 20 is formed between the panels 11 to 16 . When the housing space 20 is surrounded by a heat insulating material as will be described later, the inflow and outflow of heat to and from the outside is restricted, and heat insulation can be maintained. At least part of the six panels 11 to 16 are provided movably with respect to the adjacent panels 11 to 16, respectively. Thereby, the carriage 10 for transportation can be changed from the unfolded state in which the accommodation space 20 is formed to the folded state in which the accommodation space 20 is not formed, and can be changed from the folded state to the unfolded state. Therefore, when the carriage 10 for transportation is not used, it can be nested with another carriage 10 for transportation by folding the panels 11 to 16 . In the unfolded state, each of the six panels 11 to 16 has its peripheral edge in close contact with any other panel 11 to 16, thereby ensuring the sealing of the housing space 20. As shown in FIG.

The six panels 11-16 each include an insulation panel having an insulation portion 40 containing vacuum insulation 41 (see FIG. 7), as will be described later. In this embodiment, each of the six panels 11 to 16 includes the vacuum heat insulating material 41, but the present invention is not limited to this. Some or all of the panels 11-16 may include insulation, such as foam insulation.

Next, the configuration of each of the panels 11-16 will be further described. In the following, "the panels 11 to 16 (partial panels) are parallel (perpendicular) to a predetermined surface" means that "the main surfaces of the panels 11 to 16 (partial panels) are is parallel (perpendicular).

(top panel)
The top panel 11 is a panel located on the top side (Z-direction plus side) in the unfolded state (FIG. 2), and is arranged parallel to the horizontal plane (XY plane). In the unfolded state, the top panel 11 includes the first side frame 51 and the second side frame 52 of the truck 50, the first side panel 14, the second side panel 15, the rear panel 13, and the front panel 12. and above.

The top panel 11 has a structure that can be partially opened and closed and can be folded. and a face portion panel 11b. Of these, the first top surface partial panel 11a is foldably attached to the first side panel 14 via a first top surface hinge member 21a (see FIG. 14(b)). On the other hand, the second top surface partial panel 11b is foldably attached to the first top surface partial panel 11a via a second top surface hinge member 21c (see FIG. 14(b)). In addition, the second top panel 11b is detachably attached to the second side panel 15 via a hook-and-loop fastener (detachable member) 21b (see FIG. 14(b)). , the second top panel 11 b is configured to be separated from the second side panel 15 .

The first top surface partial panel 11a and the second top surface partial panel 11b are both arranged horizontally (parallel to the XY plane) in the unfolded state (FIG. 2). On the other hand, in the folded state (FIG. 3), the first top partial panel 11a is still horizontally arranged. On the other hand, the second top surface partial panel 11b is folded downward by being removed from the second side panel 15, and is arranged so as to hang down from the first top surface partial panel 11a. At this time, the second top surface partial panel 11b is arranged inside (X direction plus side) with respect to the folded bottom plate 58 around the inside of the first side frame 51 and parallel to the YZ plane.

(front panel)
The front panel 12 is a panel located on the front side (Y-direction negative side) in the unfolded state (FIG. 2), and is arranged perpendicular to the horizontal plane (XY plane) (parallel to the ZX plane). In the unfolded state, the front panel 12 is arranged between the first side frame 51 and the second side frame 52 of the truck 50 .

The front panel 12 has a structure that can be opened and closed and can be folded. and a third front panel 12c located on the second side frame 52 side. Of these, the first front partial panel 12a is foldably attached to the first side panel 14 via a first front hinge member 22a (see FIGS. 10(a)-(c)). The second front partial panel 12b is foldably attached to the first front partial panel 12a via a second front hinge member 22b (see FIGS. 10(a)-(c)). Further, the third front partial panel 12c is foldably attached to the second front partial panel 12b via a third front hinge member 22c (see FIGS. 10(a)-(c)). The third front partial panel 12c and the second side panel 15 are separated from each other, and may be detachably attached to each other, for example, via hook-and-loop fasteners (detachable members) (not shown).

The first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are all arranged perpendicular to the horizontal plane (XY plane) (parallel to the ZX plane) in the unfolded state (FIG. 2). be. On the other hand, in the folded state (FIG. 3), the first front partial panel 12a rotates 180° around the vertical axis (Z direction axis) from the unfolded state, and the front side (Y direction minus side) of the first side panel 14 placed in At this time, the first front partial panel 12a is parallel to the ZX plane. In addition, the second front partial panel 12b and the third front partial panel 12c are folded in a folding screen shape so as to overlap each other, and are further rotated around the vertical axis (the Z direction axis) so that the outer side of the first side panel 14 ( (minus side in the X direction). At this time, the second front partial panel 12b and the third front partial panel 12c are folded on top of each other to be disposed around the outer side of the first side frame 51 and parallel to the YZ plane.

By disposing the second front partial panel 12b and the third front partial panel 12c outside the first side frame 51 in this way, it is possible to ensure a wide storage space 20 for storing a load. Also, when lifting the bottom plate 58 toward the first side frame 51, the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are prevented from interfering with the moving bottom plate 58. there is The width of the first front partial panel 12a (the length in the X direction in the unfolded state) is shorter than the width of the second front partial panel 12b and the third front partial panel 12c (the length in the X direction in the unfolded state). . Further, the widths (the lengths in the X direction in the unfolded state) of the second front partial panel 12b and the third front partial panel 12c are substantially the same. The width of the second front panel 12b and the third front panel 12c is longer than the width of the first side frame 51 (the length in the Y direction).

(rear panel)
The back panel 13 is a panel located on the back side (Y direction plus side) in both the unfolded state (FIG. 2) and the folded state (FIG. 3), and is perpendicular to the horizontal plane (XY plane) (to the ZX plane). parallel). Also, the rear panel 13 extends between the first side frame 51 and the second side frame 52 of the carriage 50 in both the unfolded state and the folded state.

The back panel 13 has a structure that cannot be opened and closed and cannot be folded, and is composed of a single plate-like member. The rear panel 13 is immovably fixed to the first side frame 51 of the carriage 50 in both the unfolded state (FIG. 2) and the folded state (FIG. 3). The rear panel 13 is directly fixed to the first side frame 51 by connecting means (not shown). 51 may be fixed. Although the rear panel 13 is not directly fixed to the second side frame 52, it can be attached to and detached from the second side panel 15 via a fastener 28 such as a hook-and-loop fastener (see FIG. 16(a)). may be connected to

(First side panel)
The first side panel 14 is a panel located on the side of the first side frame 51 (minus side in the X direction) in both the unfolded state (FIG. 2) and the folded state (FIG. 3), and is positioned relative to the horizontal plane (XY plane). It is arranged vertically (parallel to the YZ plane). The first side panel 14 has a structure that cannot be opened and closed and cannot be folded, and is composed of a single plate-like member. Also, the first side panel 14 is placed around the outside of the first side frame 51 of the carriage 50 and parallel to the YZ plane without movement in both the unfolded state (FIG. 2) and the folded state (FIG. 3). It has become. The first side panel 14 has a size that covers the entire outer side of the first side frame 51, and is fixed to the first side frame 51 by connecting means (not shown) so that it cannot be opened and closed.

(Second side panel)
The second side panel 15 is a panel located on the side of the second side frame 52 (the positive side in the X direction) in the unfolded state (FIG. 2), and extends perpendicularly (parallel to the YZ plane) to the horizontal plane (XY plane). placed. The second side panel 15 has an openable and foldable structure, and has a first side partial panel 15a positioned on the front panel 12 side and a second side partial panel 15b positioned on the rear panel 13 side. there is Among these, the first side partial panel 15 a is fixed to the second side frame 52 . The second side panel 15b is foldably attached to the first side panel 15a via a side hinge member 27a (see FIG. 15(a)). The second side panel 15b may be detachably attached to the second side frame 52 via, for example, a hook-and-loop fastener (detachable member) (not shown).

The first side partial panel 15a and the second side partial panel 15b are both arranged perpendicular to the horizontal plane (XY plane) (parallel to the YZ plane) in the unfolded state (FIG. 2). On the other hand, in the folded state (FIG. 3), the second side partial panel 15b is folded so as to overlap with the outside (X direction plus side) of the first side partial panel 15a. Further, the second side frame 52 rotates around the vertical axis (Z direction axis) by 90° around the rotating strut 71 . Therefore, the first side partial panel 15a and the second side partial panel 15b overlap each other and are arranged around the outer side of the second side frame 52 and parallel to the ZX plane. The width of the first side panel 15a and the width of the second side panel 15b (the length in the Y direction in the unfolded state) are substantially the same. Since the second side panel 15 can be folded in two, the second side panel 15 does not interfere with the rear panel 13 when the second side frame 52 rotates.

(bottom panel)
The bottom panel 16 is a panel located on the bottom side (negative side in the Z direction) in the unfolded state (FIG. 2), and is arranged parallel to the horizontal plane (XY plane). In the unfolded state, the bottom panel 16 is arranged on the bottom plate 58 of the truck 50 and between the first side frame 51 and the second side frame 52 . The bottom panel 16 is composed of a single plate-like member, and has a structure that can be opened, closed, and folded by lifting. The bottom panel 16 is foldably attached to the second side frame 52 via a bottom hinge member 26a (see FIG. 12(b)).

The bottom panel 16 is arranged parallel to the horizontal plane (XY plane) in the unfolded state (FIG. 2). On the other hand, in the folded state ( FIG. 3 ), the bottom panel 16 is folded so as to overlap the inner side (the negative side in the X direction) of the second side frame 52 and is positioned around the inner side of the second side frame 52 . Further, the second side frame 52 rotates around the vertical axis (Z direction axis) by 90° around the rotating strut 71 . Therefore, in the folded state, the bottom panel 16 is arranged perpendicular (parallel to the ZX plane) to the horizontal plane (XY plane). At this time, the bottom panel 16 may be detachably attached to the second side frame 52 via, for example, a hook-and-loop fastener (detachable member) (not shown).

In addition, the first top hinge member 21a, the second top hinge member 21c, the first front hinge member 22a, the second front hinge member 22b, the third front hinge member 22c, the bottom hinge member 26a, and the side hinge member Each of the 27a may be composed of, for example, a bendable connecting cloth (connecting member). In this way, each hinge member 21a, 21c, 22a, 22b, 22c, 26a, 27a is made of connecting cloth, so that each panel (partial panel) can be easily unfolded or folded.

FIG. 3 shows the panels 11-16 in the folded state, as described above. As shown in FIG. 3, in the folded state, a portion of each panel 11-16 is folded around the first side frame 51 or the second side frame 52, respectively.

That is, around the first side frame 51, in order from the outside (minus side in the X direction), there are a second front partial panel 12b, a third front partial panel 12c, a first side panel 14, a bottom plate 58, and a second panel. 2 overlaps with the top surface partial panel 11b. Note that the first side frame 51 is positioned between the first side panel 14 and the bottom plate 58 . Around the second side frame 52 rotated 90° about the vertical axis, the second side panel 15b, the first side panel 15a, and the bottom panel 16 are arranged in this order from the outside (Y direction plus side). are overlapping. The second side frame 52 is located between the first side panel 15a and the bottom panel 16. As shown in FIG.

In this case, a first panel group G1 and a second panel group G2 are formed around the first side frame 51 and the second side frame 52, respectively. Among these, the first panel group G1 includes a first front partial panel 12a, a second front partial panel 12b, a third front partial panel 12c, a first side panel 14, a first side frame 51, and a bottom plate 58. , and the second top panel 11b. The second panel group G2 is composed of the second side panel 15b, the first side panel 15a, the second side frame 52, and the bottom panel 16. As shown in FIG. In the present embodiment, the first panel group G1 (second panel group G2) includes not only all or part of the panels 11 to 16, but also the first side frame 51 (second side frame 52) and A bottom plate 58 is also included.

Each of the panels 11 to 16 preferably has a thickness of, for example, 5 mm or more and 50 mm or less. In this embodiment, the case where the thicknesses of the panels 11 to 16 are the same will be described as an example, but the thicknesses of the panels 11 to 16 may be different. Moreover, the thickness (the length in the X direction) of the first side frame 51 and the second side frame 52 is, for example, 10 mm or more and 50 mm or less.

(Internal structure of panel)
Next, the structure of each panel 11-16 will be described. FIG. 7 is a sectional view showing the heat insulating portion 40 of each of the panels 11-16. 8A and 8B are cross-sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40. FIG.

As shown in FIG. 7, the heat insulating portion 40 of each panel 11 to 16 includes a vacuum heat insulating material 41, a foam heat insulating material 42, a heat insulating surrounding portion 43, a heat insulating material protection member 44, and a heat shielding sheet 45. have.

Among these, the vacuum heat insulating material 41 is attached to the foam heat insulating material 42 . The vacuum heat insulating material 41 is composed of 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 (lower side in FIG. 7) of the vacuum heat insulating material 41 . As a result, it is possible to reduce the risk of damage to the vacuum heat insulating material 41 when a load placed in the housing space 20 collides with it.

The foam heat insulating material 42 can be arranged adjacent to at least the accommodation space 20 side of the vacuum heat insulating material 41 . A known foamed heat insulating material can be used for the foam heat insulating material 42, and for example, a polyurethane foam, a polystyrene foam, a polyolefin foam, a phenol resin foam, or the like may be used.

The heat insulating enclosing part 43 is formed so as to surround the vacuum heat insulating material 41 . The heat insulating surrounding part 43 is arranged on the foam heat insulating material 42 and fixed to the foam heat insulating material 42 . By arranging the heat insulating enclosing part 43 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 enclosing part 43 is not arranged. Further, it is possible to construct a panel in which the vacuum heat insulating material 41 has substantially the same area as the foam heat insulating material 42 and the heat insulating enclosing part 43 is not used. In this case, the insulation performance can be further improved, but since there is no insulation enclosing portion 43, there is a possibility that the vacuum insulation material 41 is vulnerable to breakage due to the entry of sharp objects from the sides. A slight gap is formed between the heat insulating enclosing portion 43 and the vacuum heat insulating material 41, so that even if the size of the vacuum heat insulating material 41 slightly changes, the vacuum heat insulating material 41 can be kept outside the heat insulating material. It is designed to be housed within the enclosure 43 .

Also, the heat insulating material protection member 44 is provided on the heat insulating enclosing part 43 and mainly serves to protect the vacuum heat insulating material 41 . As the heat insulation protection member 44, for example, a protection material made of an organic polymer can be used.

The heat shield sheet 45 is arranged so as to cover the entire outer periphery of the vacuum heat insulating material 41 , the foam heat insulating material 42 , the heat insulating enclosing portion 43 and the heat insulating material protection member 44 . The heat shield sheet 45 can be arranged to cover the entirety of the vacuum heat insulating material 41 and the foam heat insulating material 42 . Examples of the heat shield sheet 45 include a multi-layer sheet containing metal foil, and a vapor deposition sheet in which a vapor deposition layer is formed on one side of a resin sheet.

Next, the vacuum heat insulating material 41 will be further explained. As shown in FIG. 8(a), the vacuum heat insulating material 41 is composed of a core material 41a and a sheathing material 41b having gas barrier properties, and is a heat insulating material obtained by decompressing the inside of the sheathing material 41b. FIG. 8B shows another example of the vacuum heat insulating material 41. As shown in FIG. In FIG. 8(a), voids are formed at both ends inside the vacuum heat insulating material 41, but in FIG. 8(b), no voids are formed. Voids may or may not be formed depending on the method of manufacturing the vacuum heat insulating material 41 .

As the core material 41a, a material used for the core material of a conventionally known vacuum insulation material can be used. For example, powder such as silica, foam such as urethane polymer, fiber such as glass wool, etc. of porous bodies may be used.

The exterior material 41b is a member that covers the outer periphery of the core material 41a, and may be a flexible sheet in which a thermal adhesion layer and a gas barrier layer are laminated in order from the core material. As the gas barrier layer, a metal foil, a vapor deposition sheet in which a vapor deposition layer is formed on one side of a resin sheet, or the like may be used. A metal foil, for example aluminum, can be used. For the deposited layer, for example, aluminum, aluminum oxide, silicon oxide can be used.

(Disassembly and assembly of carts for transportation)
Next, the operation of disassembling and assembling the cart 10 for transportation will be described.

(Disassembly of cart for transportation)
9 to 16 are diagrams for explaining each process when disassembling the cart 10 for transportation in order. 9(a), 10(a)-(c), 11(a), 12(a), 13(a), 14(a), 15(a), and 16 (a) is a plan view of the carriage 10 for transportation, and the display of the top panel 11 is omitted. 9(b), 11(b), 12(b), 13(b), 14(b), 15(b), and 16(b) show the carriage 10 for transportation. It is a front view showing.

First, as shown in FIGS. 9(a) and 9(b), it is assumed that the six panels 11 to 16 of the carriage 10 are unfolded and assembled into a box shape, and are in the unfolded state. At this time, a substantially rectangular parallelepiped housing space 20 is formed between the panels 11 to 16 . Although not shown, the storage space 20 may store a load such as food.

Next, as shown in FIGS. 10(a) to 10(c), by folding the front panel 12, the front panel 12 is opened and transitions from the unfolded state to the folded state.

During this time, first, as shown in FIG. 10(a), the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are folded like a folding screen. Specifically, the first front partial panel 12a rotates clockwise in plan view with respect to the first side panel 14 about the first front hinge member 22a. Further, the second front partial panel 12b rotates counterclockwise in plan view with respect to the first front partial panel 12a around the second front hinge member 22b. Further, the third front partial panel 12c rotates clockwise in plan view with respect to the second front partial panel 12b around the third front hinge member 22c.

Subsequently, as shown in FIG. 10(b), the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c overlap each other, and in this state, the first front partial panel 12a and the third front partial panel 12c overlap each other. The two front partial panels 12b and the third front partial panel 12c are arranged parallel to the ZX plane.

After that, as shown in FIG. 10(c), the second front partial panel 12b and the third front partial panel 12c, which overlap with each other, are moved with respect to the first front partial panel 12a around the second front hinge member 22b. Rotate clockwise in plan view. As a result, the second front partial panel 12b and the third front partial panel 12c move to the outer periphery of the first side frame 51 while the first front partial panel 12a is positioned on the front side of the first side panel 14. do. As a result, as shown in FIGS. 11A and 11B, the front panel 12 is folded, and the front side of the carriage 10 is completely opened in the horizontal direction (X direction). In addition, when a load is stored in the storage space 20, the load may be taken out from the front side in this state.

Next, as shown in FIGS. 12(a) and 12(b), by folding the bottom panel 16, the bottom panel 16 is opened and changed from the unfolded state to the folded state. During this time, the bottom panel 16 rotates clockwise around the bottom hinge member 26a with respect to the second side frame 52 when viewed from the front. As a result, the bottom panel 16 is folded so as to overlap the inner side (the negative side in the X direction) of the second side frame 52 and is positioned around the inner side of the second side frame 52 . That is, the bottom panel 16 is arranged perpendicularly (parallel to the YZ plane) to the horizontal plane (XY plane). In this case, the bottom panel 16 is attached to the second side frame 52 via a hook-and-loop fastener (detachable member) not shown.

Next, as shown in FIGS. 13A and 13B, by folding the bottom plate 58, the bottom plate 58 is opened and changed from the unfolded state to the folded state. During this time, the bottom plate 58 rotates counterclockwise with respect to the first side frame 51 when viewed from the front, and is folded so as to overlap the inner side of the first side frame 51 (the positive side in the X direction). located on the inner perimeter of the That is, the bottom plate 58 is arranged perpendicular (parallel to the YZ plane) to the horizontal plane (XY plane). In this case, the bottom plate 58 is attached to the first side frame 51 by fixing means (not shown).

Subsequently, as shown in FIGS. 14(a) and 14(b), by folding the top panel 11, the top panel 11 is opened and changed from the unfolded state to the folded state. During this time, the second top panel portion 11b is separated from the second side panel 15 by removing the hook-and-loop fastener 21b. Next, the first top surface partial panel 11a rotates counterclockwise in front view around the first top surface hinge member 21a, and the second top surface partial panel 11b rotates around the second top surface hinge member 21c. 1 Rotates clockwise with respect to the top surface partial panel 11a when viewed from the front. Thereafter, the first top surface partial panel 11a rotates clockwise around the first top surface hinge member 21a when viewed from the front, and returns to its original position. Thereby, the second top surface partial panel 11b is folded downward and arranged so as to hang down from the first top surface partial panel 11a. At this time, the second top surface partial panel 11b is arranged inside the first side frame 51 and inside (the positive side in the X direction) with respect to the bottom plate 58 .

Subsequently, as shown in FIGS. 15(a) and 15(b), by folding the second side panel 15, the second side panel 15 is opened and changed from the unfolded state to the folded state. During this time, the second side partial panel 15b rotates clockwise in plan view around the side hinge member 27a. As a result, the second side panel portion 15b is folded so as to overlap the outside of the first side portion panel 15a (the positive side in the X direction), and is positioned around the outside of the first side portion panel 15a. At this time, the first side partial panel 15a and the second side partial panel 15b are arranged perpendicular to the horizontal plane (XY plane) (parallel to the YZ plane).

After that, as shown in FIGS. 16A and 16B, by rotating the second side frame 52 around the vertical axis (Z-direction axis) around the rotation support 71, the second side frame 52 is rotated in plan view. is rotated by 90°, and the unfolded state becomes the folded state. As a result, the first side panel 15a, the second side panel 15b, and the bottom panel 16 are integrated with the second side frame 52, rotated 90° in plan view, and parallel (ZX parallel to the plane). As shown in FIG. 16(a), the second side frame 52 is detachably connected to the back panel 13 by means of fasteners 28 such as hook-and-loop fasteners, thereby holding the second side frame 52 in the folded position. be.

In this manner, the six panels 11-16 of the carriage 10 are folded as a whole. At this time, a first panel group G1 and a second panel group G2 are formed around the first side frame 51 and the second side frame 52, respectively. The rear panel 13 and the first side panel 14 remain fixed to the first side frame 51 without being opened.

As described above, when the cart 10 for transportation is not used, the panels 11 to 16 can be folded to reduce the overall volume as much as possible for storage and transportation.

(Assembly of carts for transportation)
The method of assembling the cart 10 for transportation can be performed by performing the above-described disassembling method in reverse order. 16(a) and 16(b), the second side frame 52 is rotated 90 degrees clockwise in a plan view to change from the folded state to the unfolded state. 15A and 15B, the second side panel 15 is unfolded from the folded state. 14(a) and 14(b), the top panel 11 is unfolded from the folded state. Next, as the reverse operation of FIGS. 13(a) and 13(b), the bottom plate 58 is unfolded from the folded state. state. 12(a) and 12(b), the bottom panel 16 is changed from the folded state to the unfolded state, and finally, the reverse operation of FIGS. As work, the assembly work is completed by unfolding the front panel 12 from the folded state.

(Nesting of transport carts)
Next, the operation of nesting the carriage 10 for transportation will be described. FIGS. 17(a) and 17(b) are plan views for explaining the operation of nesting the trolley for transportation 10. FIG.

First, as shown in FIG. 17(a), all the six panels 11 to 16 are in a folded state, and the second side frame 52 is in a folded state. ) are prepared.

Next, as shown in FIG. 17(b), another transportation trolley 10A (second transportation trolley 10A) in a folded state is prepared. The second transport trolley 10A has the same configuration as the first transport trolley 10. As shown in FIG. Next, the second transportation trolley 10A is brought close to the first transportation trolley 10 from the front side (Y-direction negative side) of the first transportation trolley 10 and overlapped with the first transportation trolley 10 . At this time, the first panel group G1 of the second transportation truck 10A approaches the first panel group G1 of the first transportation truck 10, and the second panel group G2 of the first transportation truck 10 The second panel group G2 of the second carriage 10A is approached. In addition, the wheel mounting frames 67 to 69 of the first transportation truck 10 (second transportation truck 10A) are arranged below the truck frame 57 of the second transportation truck 10A (first transportation truck 10). enter in.

Similarly, the third transportation trolley 10B is brought close to the second transportation trolley 10A from the front side of the second transportation trolley 10A and overlapped with the second transportation trolley 10A. Further, the fourth transportation trolley 10C is brought close to the third transportation trolley 10B from the front side of the third transportation trolley 10B, and overlapped with the third transportation trolley 10B. By repeating such work as many times as necessary, a plurality of carriages 10 can be collectively nested.

In this way, a plurality of carriages 10, 10A, 10B, and 10C are nested in the same direction, and these carriages 10, 10A, 10B, and 10C are transported integrally and stored compactly. becomes possible.

As described above, according to the present embodiment, the plurality of panels 11 to 16 are divided into an unfolded state in which they are unfolded and assembled into a box-like shape, and a folded state in which they can be nested with other carriages 10 for transportation. can take As a result, by unfolding the panels 11 to 16, it is possible to form a highly airtight storage space 20 in which a load can be stored inside the panels 11 to 16. FIG. On the other hand, when the carriage 10 is not used, the panels 11 to 16 are folded to be nested with other carriages 10 of the same type for compact storage. can be kept

Further, according to the present embodiment, the second side frame 52 is rotatable about the vertical axis (Z direction axis) between the unfolded position and the folded position. As a result, when the carriage 10 is folded, the first panel group G1 of the carriage 50, the rear panel 13, and the second panel group G2 are substantially perpendicular to each other, and in a plan view (viewed from above). They are arranged in a substantially L shape. In this state, a plurality of carriages 10 that are not in use can be superimposed and stored in the same direction. Therefore, workability of the nesting work can be improved without considering the thickness of the first panel group G1 and the second panel group G2 and the limitation of the interval between the wheel mounting frames 67-69. In addition, compared to the case where the second side frame 52 cannot be rotated, the number of transport carts 10 that can be nested can be increased.

Further, according to the present embodiment, the rear panel 13 and the first side panel 14 can nest the carriage 10 while being fixed to the carriage 50 . As a result, the structure of the carriage 10 for transportation can be simplified, and the airtightness and heat insulation of the carriage 10 for transportation can be improved. Furthermore, the work of assembling and disassembling the cart 10 can be simplified and completed in a short time.

Further, according to the present embodiment, at least a portion of each panel 11 to 16 is folded around the first side frame 51 or the second side frame 52, respectively, so that the first panel group including the first side frame 51 G1 and a second panel group G2 including the second side frame 52 are formed. As a result, the panels 11 to 16 can be easily folded, and the plurality of panels 11 to 16 can be compactly arranged around the first side frame 51 and the second side frame 52 .

Further, according to the present embodiment, since the carriage 50 has six wheels 61 to 66, it is possible to load a heavy load or a large-volume load on the carriage 10 for transportation. Further, in such a long and narrow carriage 10 with six wheels, the panels 11 to 16 can be selectively opened or folded.

Also according to this embodiment, each of the panels 11-16 includes an insulation panel, which includes vacuum insulation 41 or foam insulation. Since the vacuum heat insulating material 41 or the foam heat insulating material has good heat insulating performance even if the thickness is thin, the heat insulating property of the storage space 20 in the panels 11 to 16 is improved, and the load can be stored in a cold or warm state. . In addition, by using the vacuum heat insulating material 41 or the foam heat insulating material, the weight of the panels 11 to 16 can be reduced, the storage capacity of the unfolded transport trolley 10 can be increased, and the folded transport trolley can be stored. 10 can be compacted.

Further, according to the present embodiment, the plurality of panels 11 to 16 are composed of the top panel 11, the front panel 12, the rear panel 13, the first side panel 14, the second side panel 15, and the bottom panel 16. and As a result, since the storage space 20 is covered from all directions by the panels 11 to 16, the load in the storage space 20 can be protected from all directions.

Also according to this embodiment, the front panel 12 includes a plurality of foldable front partial panels 12a, 12b, 12c. Thus, by folding the front partial panels 12a, 12b, 12c, the front side of the carriage 10 for transportation is opened, and it becomes easy to take out the load from the storage space 20 and store it in the storage space 20. - 特許庁In addition, the front partial panels 12a, 12b, and 12c can be compactly put together and arranged around the outside of the first side frame 51. As shown in FIG. In this case, the length of the front partial panels 12a, 12b, 12c in the width direction (the Y direction in the folded state) is suppressed, and the front partial panels 12a, 12b, 12c are prevented from passing through a narrow passage when the carriage 10 passes through the narrow passage. Prevents interference with surrounding objects.

Further, according to the present embodiment, the carriage 50 further has a foldable bottom plate 58, and the bottom plate 58 is folded around the first side frame 51 to form the first panel group G1. As a result, in the unfolded state, the bottom plate 58 can support the load of the load, and in the folded state, the bottom plate 58 can be lifted and placed around the first side frame 51, thereby enabling the transport cart 10 to be nested. state.

In the above embodiment, the case where the six panels 11 to 16 include heat insulating panels has been described as an example, but the present invention is not limited to this, and the panels 11 to 16 may not necessarily have heat insulating properties. For example, by configuring each of the panels 11 to 16 from a transparent or opaque thin plate, it is possible to prevent the load accommodated in the accommodation space 20 from falling. In addition, by forming each of the panels 11 to 16 as an opaque thin plate, the load accommodated in the accommodation space 20 can be hidden from view from the outside.

Further, in the above embodiment, the case where the bottom panel 16 is provided has been described as an example, but the present invention is not limited to this, and the bottom panel 16 may not be provided. In this case, the housing space 20 may be formed by the top panel 11 , the front panel 12 , the rear panel 13 , the first side panel 14 , the second side panel 15 and the bottom plate 58 . Further, without providing the bottom panel 16, the bottom plate 58 may be made heat insulating by spraying a heat insulating material on the bottom plate 58, for example. In this case, there is no need to move the bottom panel 16, so the workability of folding or unfolding the panels 11 to 15 is improved.

(Modification)
Next, various modifications of the present embodiment will be described with reference to FIGS. 18 to 36. FIG. 18 to 36 are diagrams showing a carriage for transportation according to a modified example. In FIGS. 18 to 36, the same reference numerals are given to the same parts as those shown in FIGS. 1 to 17, and detailed description thereof is omitted.

(Modification 1)
18 and 19 show a carriage 10 for transportation according to Modification 1. FIG. FIG. 18(a) shows the carriage 10 in a folded state, FIG. 18(b) shows a state in which a plurality of carriages 10 are nested, and FIG.

18 and 19, the bogie frame 57 of the connecting member 53 is located on the rear side (Y direction plus side) of the width direction (Y direction) center of the bogie 50 . Specifically, the bogie frame 57 is located at the rear side (Y direction plus side) end of the wheel mounting frames 67 to 69 . As a result, when nested, the dimension in the width direction (Y direction) of the plurality of carriages 10 can be reduced (see FIG. 18(b)). Therefore, a plurality of carriages 10 for transportation can be superimposed compactly. Further, since the rear panel 13 and the first side panel 14 can be directly fixed to the bogie frame 57, the rear panel 13 and the first side panel 14 are firmly fixed and do not wobble. Furthermore, the airtightness and heat insulation of the housing space 20 at the corner portion between the back panel 13 and the first side panel 14 of the carriage 10 can be improved.

FIG. 19 shows the connection member 53 of the carriage 10 for transportation according to Modification 1. As shown in FIG. As shown in FIG. 19, the rotating support 71 projects upward from the end of the truck frame 57 (the end on the plus side in the X direction). Further, when the second side frame 52 is rotated around the vertical axis (Z-direction axis) around the rotation support 71, the third wheel mounting frame 69 is also integrally rotated by 90° in plan view, and is folded. becomes. At this time, the longitudinal direction of the third wheel mounting frame 69 is parallel to the longitudinal direction (X direction) of the truck 50 .

(Modification 2)
FIGS. 20 to 22 show the carriage 10 according to Modification 2. FIG. FIG. 20(a) shows the carrier 10 in the unfolded state, FIG. 20(b) shows the carrier 10 in the middle of shifting from the unfolded state to the folded state, and FIG. 20(c) shows the folded state. 1 shows the transport trolley 10 of the . 21 shows a state in which a plurality of carriages 10 for transportation are nested, and FIG. 22 shows a connecting member 53. FIG.

20 to 22, the rotating support 71 is positioned at the center of the wheel mounting frame 69 in the longitudinal direction (Y direction), and the vertical axis for rotating the second side frame 52 is the width direction (Y direction) of the truck 50. direction) located in the approximate center. The second side frame 52 is rotatable both counterclockwise and clockwise in a plan view around the rotating support 71 . Similarly to the first side panel 14, the second side panel 15 has a structure that cannot be opened and closed and cannot be folded, and is composed of a single plate-like member. Therefore, the second side panel 15 is fixed to the outside of the second side frame 52 without moving in both the unfolded state and the folded state.

As shown in FIGS. 20(a)-(c), when the second side frame 52 is rotated about the vertical axis around the rotating support 71, the second side panel 15 slightly interferes with the rear panel 13. As shown in FIGS. At this time, the second side panel 15 can be passed by bending the rear panel 13 . The back panel 13 and the second side panel 15 are provided with fasteners 31a and 31b such as hook-and-loop fasteners, respectively. After rotating the second side frame 52 by 90 degrees in plan view, the second side panel 15 and the second side frame 52 are held in the folded position by connecting the fixtures 31a and 31b to each other.

FIG. 22 shows the connection member 53 of the carriage 10 for transportation according to Modification 2. As shown in FIG. As shown in FIG. 22 , the rotating strut 71 projects upward from the end of the carriage frame 57 (the end on the plus side in the X direction). When the second side frame 52 is rotated around the vertical axis (Z-direction axis) around the rotation support 71, the third wheel mounting frame 69 is also integrally rotated by 90° in a plan view to be folded. . At this time, the longitudinal direction of the third wheel mounting frame 69 is parallel to the longitudinal direction (X direction) of the carriage 50 . In this case, the rotating strut 71 is positioned on the bogie frame 57 in the approximate center of the bogie 50 in the width direction (Y direction). Therefore, the strength of the second side frame 52 can be stabilized, and the weight balance when the second side frame 52 rotates can be improved. Furthermore, when a plurality of carriages 10 for transportation are nested (see FIG. 21), the distance in the longitudinal direction (X direction) of each carriage 10 for transportation can be shortened.

(Modification 3)
FIGS. 23(a) to 23(c) show a carriage 10 according to Modification 3. FIG. 23(a) shows the carrier 10 in the unfolded state, FIG. 23(b) shows the carrier 10 in the process of shifting from the unfolded state to the folded state, and FIG. 23(c) shows the folded state. 1 shows the transport trolley 10 of the .

23(a) to 23(c), as in FIGS. 20 to 22 (Modification 2), the vertical axis for rotating the second side frame 52 is substantially central in the width direction (Y direction) of the truck 50. located in In this case, the second side panel 15 has a structure that can be opened and closed and can be folded, and consists of a first side partial panel 15a positioned on the front panel 12 side and a second side partial panel 15b positioned on the rear panel 13 side. have. As a result, interference between the second side panel 15 and the rear panel 13 can be reduced when the second side frame 52 is rotated about the vertical axis around the rotating support 71 .

(Modification 4)
FIGS. 24(a)-(c) show a carrier 10 according to Modification 4. FIG. 24(a) shows the carrier 10 in the unfolded state, FIG. 24(b) shows the carrier 10 in the process of transitioning from the unfolded state to the folded state, and FIG. 24(c) shows the folded state. 1 shows the transport trolley 10 of the .

24(a)-(c), similar to FIGS. 18 and 19 (Modification 1), the bogie frame 57 of the connecting member 53 is located on the rear side (Y direction) of the bogie 50 from the center in the width direction (Y direction). direction plus side). On the other hand, the vertical axis for rotating the second side frame 52 is located between the truck frame 57 and the substantially central portion of the truck 50 in the width direction (Y direction). In this case, a frame extending portion 57a is connected to the end portion of the bogie frame 57 (the end portion on the plus side in the X direction). The frame extending portion 57a extends in a direction perpendicular to the bogie frame 57 (Y direction). The rotating strut 71 protrudes upward from the frame extending portion 57a. Further, when the second side frame 52 is rotated around the vertical axis (Z-direction axis) around the rotation support 71, the third wheel mounting frame 69 is also integrally rotated by 90° in plan view, and is folded. becomes. At this time, the longitudinal direction of the third wheel mounting frame 69 is parallel to the longitudinal direction (X direction) of the carriage 50 . Thereby, when the second side frame 52 is rotated about the vertical axis around the rotating support 71, the interference between the second side panel 15 and the bottom panel 16 and the rear panel 13 can be reduced.

(Modification 5)
25 to 28 show a carriage 10 for transportation according to Modification 5. FIG. Fig. 25(a) shows the carriage 10 in a folded state, and Figs. 25(b), 25(c) and 26(a) show the carriage 10 in the process of shifting from the unfolded state to the folded state, FIG. 26(b) shows the carriage 10 in a folded state. 27 shows a state in which a plurality of carts 10 for transportation are nested, and FIG. 28 shows connecting members 53. As shown in FIG.

25 to 28, the rotating support 71 is slidable along the width direction (Y direction) of the carriage 50. As shown in FIG. In this case, the rotary support 71 protrudes upward from the wheel mounting frame 69 and is slidable with respect to the wheel mounting frame 69 . In addition, the rotating strut 71 is located on the back side (Y direction positive side) of the center of the carriage 50 in the width direction (Y direction).

When moving the second side frame 52 from the unfolded position (see FIGS. 25(a) and (b)) to the folded position (see FIG. 26(b)), first, move the second side frame 52 and the rotating support 71 to the front side (Y direction (minus side) (see FIG. 25(c)). At this time, the second side panel 15 and the bottom panel 16 attached to the second side frame 52 also move to the front side (Y direction negative side). At this time, the wheel mounting frame 69 and the carriage frame 57 do not move. Next, by rotating the second side frame 52 around the vertical axis (the Z direction axis) around the rotating support 71, the second side frame 52 is rotated by 90° in plan view, and the unfolded state is changed to the folded state. becomes (see FIGS. 26(a) and 26(b)). As a result, the second side panel 15 and the bottom panel 16 are rotated 90° in a plan view together with the second side frame 52 and arranged parallel to the rear panel 13 (parallel to the ZX plane). In this state, a plurality of carriages 10 can be nested (see FIG. 27). In addition, in FIGS. 26A and 26B, the second side frame 52 is rotated counterclockwise in plan view, but it is not limited to this and may be rotated clockwise.

In this way, since the rotating strut 71 slides to the front side, interference between the second side panel 15 and the rear panel 13 is reduced when the second side frame 52 is rotated around the vertical axis around the rotating strut 71. can do. Further, after rotating the second side frame 52, the position of the rotating support 71 may be slid back to the original position. can.

FIG. 28( a ) shows a connecting member 53 of the carriage 10 for transportation according to Modification 5. FIG. As shown in FIG. 28( a ), the rotating strut 71 slides relative to the bogie frame 57 and the third wheel mounting frame 69 . However, it is sufficient that the rotating strut 71 is slidable on at least one of the bogie frame 57 and the third wheel mounting frame 69 . For example, as shown in FIG. 28( b ), the third wheel mounting frame 69 and the rotating strut 71 may be integrated to form a mechanism that can slide with respect to the bogie frame 57 .

(Modification 6)
29 and 30 show a carriage 10 for transportation according to Modification 6. FIG. FIG. 29(a) shows the carriage 10 in the folded state, and FIGS. 29(b), 29(c) and 30(a) show the carriage 10 in the process of shifting from the unfolded state to the folded state, FIG. 30(b) shows the carriage 10 in a folded state.

29 and 30, the rotary support 71 is slidable along the width direction (Y direction) of the carriage 50, similarly to FIGS. 25 to 28 (modification 5). On the other hand, the rotating strut 71 is arranged substantially at the center of the carriage 50 in the width direction (Y direction) in the unfolded state (see FIGS. 29(a) and 29(b)). When moving the second side frame 52 from the unfolded position (see FIGS. 29(a) and (b)) to the folded position (see FIG. 30(b)), first, move the second side frame 52 and the rotating support 71 to the front side (Y direction (minus side) (see FIG. 29(c)). At this time, the second side panel 15 and the bottom panel 16 attached to the second side frame 52 also move to the front side (Y direction negative side). At the same time, the wheel mounting frame 69 also moves to the front side (minus side in the Y direction). At this time, the carriage frame 57 does not move. Next, by rotating the second side frame 52 around the vertical axis (the Z direction axis) around the rotating support 71, the second side frame 52 is rotated by 90° in plan view, and the unfolded state is changed to the folded state. becomes (see FIGS. 30(a) and 30(b)). As a result, the second side panel 15 and the bottom panel 16 are rotated 90° in a plan view together with the second side frame 52 and arranged parallel to the rear panel 13 (parallel to the ZX plane). In this state, a plurality of carriages 10 can be nested. It should be noted that the second side frame 52 after being folded may also be slidable to the rear side. In this case, it is also possible to prevent the thickness of the carriage 10 from increasing during nesting.

(Modification 7)
31 to 33 show a carriage 10 for transportation according to a seventh modification. Fig. 31(a) shows the transport trolley 10 in the folded state, Fig. 31(b) shows the transport trolley 10 in the middle of shifting from the unfolded state to the folded state, and Fig. 31(c) shows the folded state. 1 shows the transport trolley 10 of the . 32 is a side view of the carrier 10 in the state shown in FIG. 31(b), and FIG. 33 is a plan view showing a state in which a plurality of carriers 10 are nested.

31 to 33, the top panel 11 has a pair of top partial panels 11d and 11e that can be folded around an axis along the longitudinal direction (X direction) of the carriage 50. As shown in FIG. In this case, the top surface partial panel 11d on the front side rotates to the back side (Y direction positive side) and overlaps the top surface partial panel 11e on the back side. The top panel 11e is rotatably connected to the upper end of the rear panel 13. As shown in FIG. Further, the bottom panel 16 and the bottom plate 58 can be folded by rotating toward the rear side (Y direction plus side) about the axis along the longitudinal direction (X direction) of the carriage 50 .

When moving the cart 10 for transportation from the unfolded position (see FIG. 31(a)) to the folded position (see FIG. 31(c)), the front panel 12 is first folded. Next, the pair of top surface partial panels 11 d and 11 e are folded back to the rear side of the rear panel 13 . Subsequently, the bottom panel 16 and the bottom plate 58 are each folded toward the rear panel 13 (see FIGS. 31(b) and 32). After that, by rotating the second side frame 52 around the vertical axis (Z direction axis) around the rotating support 71, the second side frame 52 is rotated by 90° in plan view, and the unfolded state is changed to the folded state. (See FIG. 31(c)). As a result, the second side panel 15 rotates integrally with the second side frame 52 by 90° in plan view, and becomes parallel to the rear panel 13 (parallel to the ZX plane). In this state, a plurality of carriages 10 can be nested (see FIG. 33).

In this case, the length in the longitudinal direction (X direction) of the carriage 10 for transportation can be minimized, and as a result, the length in the longitudinal direction of the plurality of carriages 10 for transportation during nesting can be further reduced. . Also, since the bottom panel 16 does not rotate, the possibility of interference between the second side frame 52 and the bottom panel 16 can be reduced.

(Modification 8)
34 to 36 show the carriage 10 for transportation according to the eighth modification. Fig. 34(a) shows the carriage 10 in the folded state, Fig. 34(b) shows the carriage 10 in the process of shifting from the unfolded state to the folded state, and Fig. 34(c) shows the folded state. 1 shows the transport trolley 10 of the . 35 is a side view of the carrier 10 in the state shown in FIG. 34(b), and FIG. 36 is a plan view showing a state in which a plurality of carriers 10 are nested.

34 to 36, similarly to FIGS. 31 to 33 (Modification 7), the top panel 11 includes a pair of top panels that can be folded about an axis along the longitudinal direction (X direction) of the carriage 50. It has panels 11d and 11e. Further, the bottom panel 16 and the bottom plate 58 can be folded by rotating toward the rear side (Y direction plus side) about the axis along the longitudinal direction (X direction) of the carriage 50 .

34 to 36, a rear frame member 72 is provided on the back side portion of the carriage 50. As shown in FIG. The rear frame member 72 extends between the first side frame 51 and the second side frame 52 . Since the rear frame member 72 is provided on the rear side of the carriage 50 in this way, the rear panel 13 is supported by the rear frame member 72 on the inside (front side), and the rear panel 13 is prevented from being damaged. be able to. In this case, the rear frame member 72 is fixed to the first side frame 51, but is not limited to this, and may be fixed to the bogie frame 57 or the wheel mounting frames 67-69. Further, the rear panel 13 may or may not be fixed to the rear frame member 72, but if the rear panel 13 is fixed, the durability can be further improved.

It is also possible to appropriately combine a plurality of constituent elements disclosed in the above embodiments and modifications as necessary. Alternatively, some components may be deleted from all the components shown in the above embodiments and modifications.

10 Carriage for Transportation 11 Top Panel 12 Front Panel 13 Rear Panel 14 First Side Panel 15 Second Side Panel 16 Bottom Panel 20 Storage Space 50 Carriage 51 First Side Frame 52 Second Side Frame 53 Connecting Member 57 Carriage Frame 58 Bottom Plate 61 first wheel 62 second wheel 63 third wheel 64 fourth wheel 65 fifth wheel 66 sixth wheel 67 first wheel mounting frame 68 second wheel mounting frame 69 third wheel mounting frame 71 rotating support

Claims (10)

a truck having a first side frame, a second side frame, and a connecting member connecting the first side frame and the second side frame to each other;
a plurality of panels provided on the carriage,
At least one side frame of the first side frame and the second side frame is rotatable about a vertical axis between an unfolded position and a folded position.cage,
The vertical axis is positioned at the center in the width direction of the bogie , transport trolley. a truck having a first side frame, a second side frame, and a connecting member connecting the first side frame and the second side frame to each other;
a plurality of panels provided on the carriage,
At least one side frame of the first side frame and the second side frame is rotatable about a vertical axis between an unfolded position and a folded position,
A carriage for transportation, wherein the one side frame is rotatable around a rotating support, and the rotating support is slidable in the width direction of the carriage. The connection member includes a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels attached thereto, and the bogie frame is positioned at the center in the width direction of the bogie. 3. The transport trolley according to claim 1 or 2 , wherein The plurality of panels has at least a top panel, a front panel, a rear panel, a first side panel, and a second side panel, and among the first side panel and the second side panel, 4. The cart for transportation according to any one of claims 1 to 3, wherein the side panel fixed to said one side frame is openable and closable. The connection member includes a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels mounted thereon. 2. A transport trolley according to claim 1, wherein the transport trolley is laterally located. The plurality of panels has a top panel, a front panel, a rear panel, a first side panel, a second side panel, and a bottom panel, and the top panel extends in the longitudinal direction of the bogie. 2. The transport dolly of claim 1, comprising a plurality of top partial panels foldable about axes along the length of the dolly, wherein said bottom panels are foldable about axes along the length of said dolly. a first side frame;
a second side frame;
a connecting member that connects the first side frame and the second side frame to each other;
At least one side frame of the first side frame and the second side frame is rotatable about a vertical axis between an unfolded position and a folded position.cage,
The vertical axis is positioned at the center in the width direction of the bogie , trolley. a first side frame;
a second side frame;
a connecting member that connects the first side frame and the second side frame to each other;
At least one side frame of the first side frame and the second side frame is rotatable about a vertical axis between an unfolded position and a folded position,
The one side frame is rotatable around a rotating strut, and the rotating strut is slidable in the width direction of the trolley. The connection member includes a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels attached thereto, and the bogie frame is positioned at the center in the width direction of the bogie. 9. A trolley according to claim 7 or 8, comprising: The connection member includes a bogie frame extending in the longitudinal direction of the bogie and a wheel mounting frame connected to the bogie frame and having wheels mounted thereon. 8. The trolley of claim 7 , which is laterally positioned.

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