JP7137779B2 - cart for transportation - Google Patents

Description

This embodiment relates to 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 transport trolley that allows panels to be assembled and folded in a short time, has a simple structure, and is easy to stack and store with other transport trolleys.

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 a plurality of panels, the plurality of panels having at least a top panel, a front panel, a rear panel, a first side panel, and a second side panel, the top panel and The front panels are respectively openable and closable, the first side panel is fixed to the first side frame so as not to be opened and closed, and the second side panel is fixed to the second side frame so as not to be opened and closed. , the back panel is fixed to the carriage so that it cannot be opened and closed.

In the carriage for transportation according to the present embodiment, the top panel may include a plurality of top partial panels that are foldable about an axis along the longitudinal direction of the carriage.

In the carriage for transportation according to the present embodiment, the plurality of top surface partial panels may be integrally rotatable about the upper end of the back panel.

In the carriage for transportation according to the present embodiment, the front panel may be rotatably connected to the top panel and foldable toward the rear panel.

In the carriage for transportation according to the present embodiment, the top panel may be inclined so that the height decreases from the back side toward the front side.

In the carriage for transportation according to the present embodiment, the top panel includes a thin portion positioned on the inner side in the plane direction, and a bank portion formed on the peripheral edge of the thin portion and protruding downward from the thin portion. may have.

In the carriage for transportation according to the present embodiment, the top panel is provided with a lifting mechanism for lifting the top panel, and the top panel is configured to lift the top panel against the force of the lifting mechanism. A holding member may be provided to hold the panel.

In the carriage for transportation according to the present embodiment, the top panel may include a plurality of top panel parts that can be folded around an axis along the width direction of the carriage.

In the carriage for transportation according to the present embodiment, it may be possible to nest the other carriage and the front panel sides thereof so as to face each other.

In the carriage for transportation according to this embodiment, the connection member has a central frame extending in the longitudinal direction of the carriage, and a wheel mounting frame connected to the central frame and having wheels mounted thereon. , may be located on the rear side of the central axis of the carriage in the width direction.

In the carriage for transportation according to the present embodiment, the front panel is attached to the first side panel so as to be foldable, and overlaps the rear panel of the other carriage when nested with the other carriage for transportation. It may be possible to place it in position.

According to the present embodiment, it is possible to provide a carriage for transportation that allows panels to be assembled and folded in a short period of time, has a simple structure, and can be easily stored by being stacked on other carriages 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. FIG. 4 is a perspective view showing a truck. FIG. 5 is a partially enlarged front view of the bogie. FIG. 6 is a cross-sectional view showing each panel. 7(a) and 7(b) are sectional views showing the vacuum heat insulating material of each panel. 8(a) and 8(b) are a plan view and a front view, respectively, showing a state before each panel of the carriage for transportation according to the embodiment is changed from the unfolded state to the folded state. 9(a) and 9(b) are respectively a plan view and a front view showing a process of folding the front panel of the carriage for transportation according to the embodiment from the unfolded 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 plan views showing a process of nesting two carts for transportation. 16(a) and 16(b) are a plan view and a front view, respectively, showing a carriage for transportation according to Modification 1. FIG. 17(a) and 17(b) are a plan view and a front view, respectively, showing a carriage for transportation according to Modification 1. FIG. 18(a) and 18(b) are side views showing the carriage for transportation according to Modification 1, respectively. FIGS. 19(a) and 19(b) are plan views showing the effect of nesting the trolley for transportation according to Modification 1, respectively. 20(a) and 20(b) are a plan view and a front view, respectively, showing a carriage for transportation according to Modification 2. FIG. 21(a) and 21(b) are a plan view and a front view, respectively, showing a carriage for transportation according to Modification 2. FIG. 22(a) and 22(b) are side views showing the carriage for transportation according to Modification 2, respectively. FIGS. 23(a) and 23(b) are plan views showing the effect of nesting the carriages for transportation according to Modification 2, respectively. 24(a) and 24(b) are respectively a plan view and a front view showing a carriage for transportation according to Modification 3. FIG. 25(a) and 25(b) are respectively a plan view and a front view showing a carriage for transportation according to Modification 3. FIG. 26 is a side view showing a carriage for transportation according to Modification 3. FIG. FIGS. 27(a) and 27(b) are plan views showing the effect of nesting the carriages for transportation according to Modification 3, respectively. 28 is a plan view showing a carriage for transportation according to Modification 4. FIG. FIG. 29 is a plan view showing the operation of nesting the carriage for transportation according to Modification 4. FIG. FIG. 30 is a plan view showing the operation of nesting the carriage for transportation according to Modification 4. FIG. 31 is a plan view showing a carriage for transportation according to Modification 5. FIG. FIG. 32 is a plan view showing the operation of nesting the trolleys for transportation according to Modification 5. FIG. FIG. 33 is a plan view showing the operation of nesting the trolleys for transportation according to Modification 5. FIG. 34 is a plan view showing a carriage for transportation according to Modification 6. FIG. 35 is a front view showing a carriage for transportation according to Modification 6. FIG. 36(a) and 36(b) are side views showing the carriage for transportation according to Modification 6, respectively. FIGS. 37(a) and 37(b) are side views showing the effect of nesting the trolley for transportation according to Modification 6, respectively. FIG. 38 is a plan view showing the effect of nesting the trolley for transportation according to Modification 6. FIG. 38 is a plan view showing a carriage for transportation according to Modification 7. FIG. 40 is a front view showing a carriage for transportation according to Modification 7. FIG. 41 is a perspective view showing a top panel of a carriage for transportation according to Modification 7. FIG. 42(a) and 42(b) are side views showing the carriage for transportation according to Modification 7, respectively. FIG. 43 is a side view showing the operation of nesting the trolley for transportation according to Modification 7. FIG. 44(a) and 44(b) are side views showing the carriage for transportation according to Modification 8, respectively. 45(a) and 45(b) are respectively a plan view and a front view showing a carriage for transportation according to the ninth modification. 46(a) and 46(b) are respectively a plan view and a front view showing a carriage for transportation according to the ninth modification.

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 5. 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. FIG. 4 is a perspective view of a truck. FIG. 5 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, the two transport trolleys 10 can be stored compactly by nesting (overlapping) with another same transport trolley 10. is.

Next, the configuration of the truck 50 will be described with reference to FIG. FIG. 4 is a perspective view showing the carriage 50. As shown in FIG. As shown in FIG. 4, the truck 50 has a first side frame 51, a second side frame 52, and a connecting member 53 that connects the first side frame 51 and the second side frame 52 to each other. . In this case, the 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 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 configuration of the second side frame 52 is substantially the same as the configuration of the first side frame 51 described above. Two wheels 65 and 66 are provided below the second side frame 52 .

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

The central frame 57 is positioned substantially centrally in the width direction (Y direction) of the carriage 50 . The central frame 57 has sufficient strength to hold the load of the transport truck 10 and its load, and has a narrow width that does not interfere with nesting the transport trucks 10 together. . Specifically, the width Wa (length in the Y direction) of the central frame 57 may be 5% or more and 33% or less of the maximum width Wb (length in the Y direction) of the carriage 50 . Also, although the intervals Pa and Pb depend on the maximum width Wb of the carriage 50, they may be, for example, 20 mm or more and 200 mm or less.

The three wheel mounting frames 67 to 69 each extend in a direction perpendicular to the center 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. The wheel mounting frames 67 to 69 are fixed to the lower surface (Z-direction minus side surface) of the center frame 57, respectively. so as not to interfere with the central frame 57 of the carriage 10 for transportation.

The first wheel mounting frame 67 and the second wheel mounting frame 68 are arranged with an interval Pa in the longitudinal direction (X direction) of the truck 50 . The second wheel mounting frame 68 and the third wheel mounting frame 69 are arranged with an interval Pb in the longitudinal direction (X direction) of the truck 50 . In this case, the distance Pa between the first wheel mounting frame 67 and the second wheel mounting frame 68 may be equal to the distance Pb between the second wheel mounting frame 68 and the third wheel mounting frame 69 (Pa=Pb), It may be different from the interval Pb.

The first wheel mounting frame 67 is provided at one end in the longitudinal direction of the center 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 central 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 width (length in the X direction) Wc of the second wheel mounting frame 68 is narrowed to the extent that it does not interfere with the nesting of the carriages 10 for transportation. Specifically, the width Wc of the second wheel mounting frame 68 may be 3.7% or more and 12.6% or less of the maximum length (length in the X direction) La of the truck 50 . Also, the width Wc may be, for example, 5 mm or more and 150 mm or less, depending on the maximum length La of the carriage 50 .

The third wheel mounting frame 69 is provided at the other longitudinal end of the central frame 57 (X-direction plus side end). 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 .

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 . In addition, the bottom plate 58 has sufficient strength to hold the load of the load on the carriage 10, and its thickness Ta may be, for example, 1 cm or more and 20 cm or less, preferably 3 cm or more and 15 cm or less.

The bottom plate 58 is movable with respect to the connecting member 53 , and has a developed state (see FIGS. 2 and 4 ) placed on the connecting member 53 and a second side frame 52 lifted with respect to the connecting member 53 . It can assume a folded state (see FIG. 3) in which it is folded around. That is, when the panels 11 to 16 are unfolded and assembled into a box-like unfolded state (see FIGS. 2 and 4), the bottom plate 58 is arranged in a horizontal unfolded state. On the other hand, when the plurality of panels 11 to 16 are folded into the folded state (see FIG. 3), the bottom plate 58 is lifted vertically and arranged in the folded state.

As shown in FIG. 5, the bottom plate 58 is rotatable around a fulcrum portion 58a provided inside the lower support portion 54 (minus side in the X direction). 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 configuration)
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. 6), 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 third top panel 11c located on the second side frame 52 side. Of these, the second top surface partial panel 11b is foldably attached to the third top surface partial panel 11c via a top surface hinge member 21a (see FIG. 14(b)). Further, the second top panel 11b is detachably attached to the first top panel 11a via a hook-and-loop fastener (detachable member) 21b (see FIG. 14(b)), and the hook-and-loop fastener 21b is removed. In this case, the second top partial panel 11b is configured to be separated from the first top partial panel 11a.

The first top partial panel 11a, the second top partial panel 11b, and the third top partial panel 11c are all 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 and the third top partial panel 11c are still horizontally arranged. On the other hand, the second top partial panel 11b is folded downward by being removed from the first top partial panel 11a, and is arranged to hang down from the third top partial panel 11c. At this time, the second top surface partial panel 11b is arranged on the inside periphery of the second side frame 52, inside (X direction minus side) with respect to the folded bottom plate 58, 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. Among 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. 9(a) and 10(a)-(c)). . Also, 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. 9(a) and 10(a)-(c)). It is 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. 9(a) and 10(a)-(c)). there is 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, the second front partial panel 12b, and the third front partial panel 12c are folded into a folding screen shape so as to overlap each other, and are further folded along the vertical axis (Z direction). axis) and arranged outside the first side panel 14 (minus side in the X direction). At this time, the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are folded and arranged around the outside of the first side frame 51 and parallel to the YZ plane.

By arranging the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c outside the first side frame 51 in this manner, a wide accommodation space 20 for accommodating the load is ensured. can do. Also, when the bottom plate 58 is lifted toward the second side frame 52, 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 widths (lengths in the Y direction in the folded state) of the first front partial panel 12a, the second front partial panel 12b and the third front partial panel 12c may be substantially the same. The widths of the first front panel 12a, the second front panel 12b, and the third front panel 12c are substantially the same as the width of the first side frame 51 (the length in the Y direction), or is longer than the width of

(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 secured against movement and opening and closing relative to the first side frame 51 and the second side frame 52 of the carriage 50 in both the unfolded state (FIG. 2) and the folded state (FIG. 3). ing. The rear panel 13 is directly fixed to the first side frame 51 and the second side frame 52 by connecting means (not shown), but the present invention is not limited to the first side panel 14, the second side panel 15 and/or the connecting member. It may be indirectly fixed to the first side frame 51 and the second side frame 52 via 53 .

(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 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 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. Also, the second side panel 15 is placed around the outside of the second side frame 52 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 second side panel 15 has a size that covers the entire outer side of the second side frame 52, and is fixed to the second side frame 52 by connecting means (not shown) so that it cannot be opened and closed.

(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 first side frame 51 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 positive side in the X direction) of the first side frame 51 and is positioned around the inner side of the first side frame 51 . That is, in the folded state, the bottom panel 16 is arranged perpendicular (parallel to the YZ plane) to the horizontal plane (XY plane). At this time, the bottom panel 16 is detachably attached to the first side frame 51 via, for example, a hook-and-loop fastener (detachable member) 26b (see FIG. 12(b)). In this case, the work of attaching the bottom panel 16 to the first side frame 51 or removing the bottom panel 16 from the first side frame 51 can be easily performed by the hook-and-loop fastener 26b. Further, since the hook-and-loop fastener 26b has a certain area, the bottom panel 16 can be attached to the first side frame 51 without strictly aligning the bottom panel 16 with the first side frame 51. . Further, it is possible to absorb positional deviation and dimensional error of the bottom panel 16 in the surface direction, and it is also easy to finely adjust the attachment position of the bottom panel 16 to the first side frame 51 .

The top hinge member 21a, the first front hinge member 22a, the second front hinge member 22b, the third front hinge member 22c, and the bottom hinge member 26a described above are, for example, bendable connecting cloths (connecting members). It may be configured from In this way, each hinge member 21a, 22a, 22b, 22c, 26a 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 part of each panel 11 to 16 (top panel 11, front panel 12, first side panel 14, second side panel 15 and bottom panel 16) is positioned on the first side. It is folded around the frame 51 or the second side frame 52 .

That is, around the first side frame 51, from the outside (minus side in the X direction), there are, in order, a third front partial panel 12c, a second front partial panel 12b, a first front partial panel 12a, and a first side panel. 14 and the bottom panel 16 overlap. Note that the first side frame 51 is positioned between the first side panel 14 and the bottom panel 16 . Around the second side frame 52, the second side panel 15, the bottom plate 58, and the second top panel 11b overlap in order from the outside (the positive side in the X direction). The second side frame 52 is positioned between the second side panel 15 and the bottom plate 58 .

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 third front partial panel 12c, a second front partial panel 12b, a first front partial panel 12a, a first side panel 14, a first side frame 51, and a bottom panel 16. and The second panel group G2 is composed of the second side panel 15, the second side frame 52, the bottom plate 58, and the second top panel 11b. 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. 6 is a cross-sectional view showing the heat insulating portion 40 of each of the panels 11-16. 7(a) and 7(b) are sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40. FIG.

As shown in FIG. 6, 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 housing space 20 side (lower side in FIG. 6) 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. 7(a), the vacuum heat insulating material 41 is composed of a core material 41a and a sheathing material 41b having a gas barrier property, and is a heat insulating material obtained by decompressing the inside of the sheathing material 41b. FIG. 7B shows another example of the vacuum heat insulating material 41. As shown in FIG. In FIG. 7(a), voids are formed at both ends inside the vacuum heat insulating material 41, but in FIG. 7(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)
8 to 14 are diagrams for explaining each process when disassembling the cart 10 for transportation in order. 8(a), 9(a), 10(a)-(c), 11(a), 12(a), 13(a), and 14(a) are respectively It is a top view of the cart 10 for transportation, and the display of the top panel 11 is abbreviate|omitted. 8(b), 9(b), 11(b), 12(b), 13(b), and 14(b) are front views showing the carriage 10 for transportation.

First, as shown in FIGS. 8(a) and 8(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 an 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. 9A and 9B, 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 hinge member 22a is the center. , rotates clockwise in plan view with respect to the first side panel 14 .

Thereafter, as shown in FIG. 10(c), the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c, which are overlapped with each other, move to the outer periphery of the first side frame 51. As shown in FIG. 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 counterclockwise in a front view with respect to the first side frame 51 about the bottom hinge member 26a. As a result, the bottom panel 16 is folded so as to overlap the inner side (the positive side in the X direction) of the first side frame 51 and is positioned around the inner side of the first side frame 51 . 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 first side frame 51 via hook-and-loop fasteners (detachable members) 26b.

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 clockwise with respect to the second side frame 52 when viewed from the front, and is folded so as to overlap the inside of the second side frame 52 (the negative side in the X direction). Located on the inner perimeter. 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 second side frame 52 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 hook-and-loop fastener 21b is removed, so that the second top panel 11b is separated from the first top panel 11a, and the top hinge member 21a is centered on the third top panel 11c. Rotate counterclockwise in vision. As a result, the second top surface partial panel 11b is folded downward and arranged so as to hang down from the third top surface partial panel 11c. At this time, the second top surface partial panel 11b is arranged inside the second side frame 52 and inside (the negative side in the X direction) with respect to the bottom plate 58 .

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, the first side panel 14, and the second side panel 15 remain fixed to the first side frame 51 and/or the second side frame 52 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. 14(a) and 14(b), the top panel 11 is changed from the folded state to the unfolded state. Next, as the reverse operation of FIGS. 13(a) and 13(b), the bottom plate 58 is folded. to the expanded state. 12A and 12B, the bottom panel 16 is changed from the folded state to the unfolded state, and finally, as the reverse operation of FIGS. 9 to 11, the front panel 12 is changed from the folded state to the unfolded state. By doing so, the assembly work is completed.

(Nesting of transport carts)
Next, the operation of nesting the carriage 10 for transportation will be described. FIGS. 15(a) and 15(b) are plan views for explaining the action of nesting the trolley for transportation 10. FIG. In addition, in FIGS. 15(a) and 15(b), the display of the first top surface partial panel 11a and the third top surface partial panel 11c is omitted.

First, as shown in FIG. 15(a), a carriage 10 for transportation (first carriage 10 for transportation) in which all six panels 11 to 16 are folded is prepared.

Next, as shown in FIG. 15(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 open sides (that is, the side on which the front panel 12 is located in the unfolded state) of the first transportation trolley 10 and the second transportation trolley 10A face each other. Subsequently, 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 second panel group G2 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 first panel group G1 of the second carriage 10A is approached. At this time, the wheel mounting frames 67 to 69 of the first transportation trolley 10 (second transportation trolley 10A) are positioned below the central frame 57 of the second transportation trolley 10A (first transportation trolley 10). enter the

In this way, the two carriages 10 and 10A can be nested so as to face each other, and these carriages 10 and 10A can be transported as a unit and stored compactly.

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 this embodiment, the top panel 11, the front panel 12, and the bottom panel 16 can each be opened and closed, and the first side panel 14 is fixed to the first side frame 51 so as not to be opened and closed. . Also, the second side panel 15 is fixed to the second side frame 52 so that it cannot be opened and closed. Further, the rear panel 13 is fixed to the first side frame 51 and the second side frame 52 of the carriage 50 so that it cannot be opened and closed. As a result, when the carriage 10 is folded, the first panel group G1, the rear panel 13, and the second panel group G2 of the carriage 50 form a U-shape in plan view (viewed from above). placed. In this state, two carriages 10 for transportation that are not in use can be placed face to face and stored in an overlapping manner. Therefore, the panels 11 to 16 can be assembled and folded in a short time.

Further, according to the present embodiment, the back panel 13 can nest the transport trolley 10 together with the first side panel 14 and the second side panel 15 while being fixed to the trolley 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 for transportation can be performed in a short time. In addition, the two nested transport carts 10 are arranged point-symmetrically with each other in a plan view. Therefore, the two carriages 10 for transportation can be stabilized against horizontal external force, and can be prevented from overturning.

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 second side frame 52 to form the second panel group G2. 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 second side frame 52, 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. 16 to 46. FIG. 16 to 46 are diagrams showing a carriage for transportation according to a modified example. In FIGS. 16 to 46, the same reference numerals are assigned to the same parts as those shown in FIGS. 1 to 15, and detailed description thereof will be omitted.

(Modification 1)
16 to 19 show a carriage 10 for transportation according to Modification 1. FIG. 16 to 19, the top panel 11 has a pair of top partial panels 11d and 11e that can be folded around an axis A1 along the longitudinal direction (X direction) of the carriage 50. As shown in FIG. The pair of top surface partial panels 11d and 11e is composed of a fourth top surface partial panel 11d located on the front side and a fifth top surface partial panel 11e located on the back side. In this case, the fourth top partial panel 11d rotates to the rear side (Y-direction plus side) about the axis A1 and overlaps the fifth top partial panel 11e. The fifth top surface partial panel 11e is rotatably connected to the upper end of the rear panel 13, but is not limited to this, and may be fixed to the rear panel 13 so as not to rotate. The planar shapes of the pair of top surface partial panels 11d and 11e are rectangular and substantially identical to each other. Further, the axis A1 is positioned substantially at the center of the top panel 11 in the lateral direction (Y direction). The top panel 11 may be composed of three or more top partial panels that can be folded around an axis along the longitudinal direction of the carriage 50 .

16(a) and 16(b) show the case where the top panel 11 is in the unfolded state. At this time, the top surface partial panels 11d and 11e are both arranged parallel to the horizontal plane (XY plane).

17(a) and 17(b) show the top panel 11 in the folded state. At this time, the fourth top surface partial panel 11d is folded around the axis A1 and placed on the fifth top surface partial panel 11e.

As shown in FIGS. 18(a) and 18(b), the pair of top surface partial panels 11d and 11e are integrally rotatable about the upper end of the rear panel 13. As shown in FIGS. As a result, the first side panel 14 and the second side panel 15 of each carriage 10 can easily enter below the top panel 11 during nesting. That is, during nesting, the pair of top surface partial panels 11d and 11e can be rotated with respect to the rear panel 13 and lifted. As a result, the upper ends of the first side panel 14 and the second side panel 15 of one of the carriages 10 can be prevented from colliding with the top panel 11 of the other carriage 10, and the panels 11, 14 , 15 can be prevented from being deformed or damaged. As a result, the workability of nesting the two carriages 10 is improved.

FIGS. 19(a) and 19(b) show the operation of nesting the carriage 10 for transportation. In other words, the two transport carts 10 in the folded state can be superimposed and nested while facing each other. In this case, the top panel 11 is folded back at approximately half in the width direction (Y direction) of the carriage 50, and the fourth top panel 11d is placed on the fifth top panel 11e. The top panels 11 of the two carts 10 for transportation do not interfere with each other. Moreover, since it is not necessary to fold the top panel 11 to the side of the first side panel 14 or the side of the second side panel 15, the structure of the carriage 10 for transportation is simplified, and the durability can be improved. Furthermore, it is possible to improve the airtightness and heat insulation of the housing space 20 at the corners of the rear surface, the top surface and the side surfaces of the carriage 10 for transportation.

(Modification 2)
FIGS. 20 to 23 show the carriage 10 according to Modification 2. FIG. 20 to 23, similarly to FIGS. 16 to 19 (Modification 1), the top panel 11 is a pair of top panels that can be folded around the axis A1 along the longitudinal direction (X direction) of the carriage 50. It has partial panels 11d and 11e. The front panel 12 is rotatably connected to the top panel 11 and can be folded back toward the rear panel 13 . That is, the front panel 12 has three front partial panels 12d, 12e, 12f. The three front partial panels 12d, 12e, and 12f are a fourth front partial panel 12d located on the bottom side, a fifth front partial panel 12e located above the fourth front partial panel 12d, and a fifth front partial panel. and a sixth front partial panel 12f located above 12e. The planar shapes of the three front partial panels 12d, 12e, and 12f are substantially the same. In this case, the fourth front partial panel 12d is rotatable with respect to the fifth front partial panel 12e about an axis A2 along the longitudinal direction (X direction) of the carriage 50. As shown in FIG. In addition, the fifth front partial panel 12e is rotatable with respect to the sixth front partial panel 12f about an axis A3 along the longitudinal direction (X direction) of the carriage 50. As shown in FIG. Further, the sixth front partial panel 12f is rotatable with respect to the fourth top partial panel 11d about an axis A4 along the longitudinal direction (X direction) of the carriage 50. As shown in FIG. As a result, when the fourth top panel 11d is superimposed on the fifth top panel 11e, the three front panels 12d, 12e, and 12f are positioned closer to the back side (the positive side in the Y direction) than the back panel 13. It is designed to be folded. The front panel 12 may be composed of two or four or more front partial panels that can be folded around an axis along the longitudinal direction of the carriage 50 .

20(a) and 20(b) show the case where the front panel 12 is in the unfolded state. At this time, the front partial panels 12d, 12e, and 12f are all arranged parallel to the vertical plane (ZX plane).

21(a) and 21(b) show the case where the front panel 12 is in a folded state. At this time, the fourth top partial panel 11d of the top panel 11 is placed on the fifth top partial panel 11e. Further, the front partial panels 12d, 12e, and 12f are folded back toward the rear side (the positive side in the Y direction) of the rear panel 13. As shown in FIG.

As shown in FIGS. 22(a) and 22(b), the pair of top surface partial panels 11d and 11e are integrally rotatable about the upper end of the rear panel 13. As shown in FIGS. As a result, the first panel group G1 and the second panel group G2 of each carriage 10 can easily enter below the top panel 11 during nesting, which will be described later.

FIGS. 23(a) and 23(b) show the operation of nesting the carriage 10 for transportation. In other words, the two transport carts 10 in the folded state can be superimposed and nested while facing each other. In this case, since the fourth top partial panel 11d of the top panel 11 is placed on the fifth top partial panel 11e, the top panels 11 of the two nested carriages 10 interfere with each other. I have nothing to do. In addition, by folding the front panel 12 toward the rear panel 13 side, the volume occupied by the panel around the first side frame 51 and the second side frame 52 can be reduced. The length in the direction can be shortened, and the carriages 10 for transportation can be stacked compactly when nesting.

(Modification 3)
24 to 27 show a carriage 10 for transportation according to Modification 3. FIG. 24 to 27, the top panel 11 has a pair of top partial panels 11f and 11g that can be folded around an axis A5 along the width direction (Y direction) of the truck 50. As shown in FIG. The pair of top surface partial panels 11f and 11g is composed of a sixth top surface partial panel 11f positioned on the second side frame 52 side and a seventh top surface partial panel 11g positioned on the first side frame 51 side. there is In this case, the sixth top panel 11f rotates about the axis A5 toward the first side frame 51 (minus side in the X direction) and overlaps the seventh top panel 11g. In addition, the seventh top surface partial panel 11g is fixed to the upper end of the first side panel 14 so as not to rotate, but is not limited to this and is connected to the first side panel 14 so as to be rotatable. can be The planar shapes of the pair of top surface partial panels 11f and 11g are substantially the same. The axis A5 is positioned substantially at the center of the top panel 11 in the longitudinal direction (X direction). The top panel 11 may be composed of three or more top partial panels that can be folded about an axis along the width direction (Y direction) of the carriage 50 .

24(a) and 24(b) show the top panel 11 in the unfolded state. At this time, the top surface partial panels 11f and 11g are both arranged parallel to the horizontal plane (XY plane).

25(a), (b) and FIG. 26 show the case where the top panel 11 is in the folded state. At this time, the sixth top surface partial panel 11f is folded around the axis A5 and placed on the seventh top surface partial panel 11g.

FIGS. 27(a) and 27(b) show the operation of nesting the carriage 10 for transportation. In other words, the two transport carts 10 in the folded state can be superimposed and nested while facing each other. In this case, the top panel 11 is folded back at approximately half in the longitudinal direction (X direction) of the carriage 50, and the sixth top panel 11f is placed on the seventh top panel 11g. Therefore, the top panels 11 of the two nested carriages 10 do not interfere with each other. Moreover, since it is not necessary to fold the top panel 11 to the side of the first side panel 14 or the second side panel 15, the structure of the carriage 10 is simplified, and durability can be improved. Furthermore, it is possible to improve the airtightness and heat insulation of the storage space 20 at the corners of the rear surface, the top surface, and the side surface (first side panel 14 side) of the transportation cart 10 .

(Modification 4)
28 to 30 show a carriage 10 for transportation according to Modification 4. FIG. As shown in FIG. 28 , the central frame 57 of the connecting member 53 is located on the back side (Y direction plus side) of the central axis CL in the width direction (Y direction) of the carriage 50 . In other words, the central frame 57 is positioned with the entirety shifted toward the back side of the central axis CL. As a result, when nested, the dimension in the width direction (Y direction) of the two carts 10 can be reduced (see FIGS. 29 and 30). Therefore, two carts 10 for transportation can be superimposed compactly.

As shown in FIG. 29 , the central frames 57 of the two nested carts 10 that abut or approach each other may be connected by a connecting member 75 . The connecting member 75 may be provided substantially at the center in the longitudinal direction (X direction) of the central frame 57 of one or both of the carriages 10 for transportation. Such a connecting member 75 may be any member that can connect the central frames 57 to each other, and may include detachable means such as a fitting structure or an engaging structure.

Further, as shown in FIG. 30, the top panels 11 of the two nested carts 10 that abut or approach each other may be connected by a connecting member 76 . The connecting member 76 may be provided substantially at the center in the longitudinal direction (X direction) of the top panel 11 of one or both of the carriages 10 for transportation. In FIG. 30, a connecting member 76 is provided at a connecting portion between the fourth top panel 11d and the fifth top panel 11e. Such a connecting member 76 may be any member that can connect the top panels 11 to each other, and may include detachable means such as hook-and-loop fasteners.

(Modification 5)
31 to 33 show a carriage 10 for transportation according to Modification 5. FIG. As shown in FIG. 31, the first front section panel 12a of the front panel 12 is foldably attached to the first side panel 14, and the second front section panel 12b is attached to the first front section panel 12a. Foldably attached, the third front section panel 12c is foldably attached to the second front section panel 12b. In this case, the width of the first front partial panel 12a (the distance in the direction perpendicular to the Z direction on the main surface of the panel) is greater than the width of the second front partial panel 12b and the width of the third front partial panel 12c. narrow. The width of the second front panel 12b and the width of the third front panel 12c are the same.

In this case, as shown in FIG. 32, during normal nesting, the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are superimposed on the first side panel 14, and the first side It can be stored on the frame 51 side. In this case, the dimension in the width direction (Y direction) of the two nested carriages 10 can be reduced, and the two carriages 10 can be superimposed compactly.

On the other hand, as shown in FIG. 33, during nesting, the front panel 12 of each transportation trolley 10 is not housed in the first side frame 51 side, and the front side of the transportation trolley 10 (the rear surface of the other transportation trolley 10 is It may be arranged at a position overlapping the panel 13). As a result, it is possible to reduce the dimension in the longitudinal direction (X direction) of the transporting trolley 10 when the two transporting trolleys 10 are stacked. As a result, the two carts 10 for transportation can be superimposed compactly. Furthermore, since the inner side of the front panel 12 does not face outward, it is hygienic. In addition, since the front panel 12 overlaps with the back panel 13 of the other carriage 10 for transportation, the strength of the overlapping surface of the front panel 12 and the back panel 13 is improved. In particular, since the inner surface of the front panel 12 is often made of a material with low hardness (soft), the inner surface of the front panel 12 may not be scratched or damaged by not facing the inner surface of the front panel 12 outward. You can prevent it from happening.

(Modification 6)
34 to 38 show a carriage 10 for transportation according to Modification 6. FIG. 34 to 38, similarly to FIGS. 16 to 19 (Modification 1), the top panel 11 is a pair of top panels that can be folded around the axis A1 along the longitudinal direction (X direction) of the carriage 50. It has partial panels 11d and 11e. In addition, the first side panel 14 and the second side panel 15 are each inclined so that the height (position in the Z direction) decreases from the back side (the positive side in the Y direction) toward the front side (the negative side in the Y direction). It has inclined upper ends 14a, 15a. The top panel 11 is arranged along the inclined upper end portions 14 a and 15 a of the first side panel 14 and the second side panel 15 . Therefore, the top panel 11 is inclined so that the height decreases from the back side to the front side.

34 and 35 show the top panel 11 in the folded state. At this time, the fourth top surface partial panel 11d and the fifth top surface partial panel 11e are disposed so as to be inclined so that the height thereof decreases from the back side toward the front side.

As shown in FIGS. 36(a) and 36(b), the fourth top panel 11d is folded around the axis A1 and placed on the fifth top panel 11e. In this case, the fifth top panel 11e may be fixed to the first side panel 14 and the second side panel 15 so as not to rotate. In this case, the fifth top panel 11e and the rear panel 13 can be fixed to the first side panel 14 and the second side panel 15, so that the accommodation space 20 can be sealed and heat-insulated. In addition, the opening and closing positions of each panel can be reduced, opening and closing can be performed in a short time, and the durability of the carriage 10 for transportation can be improved.

FIGS. 37(a), 37(b) and 38 show the effect of nesting the cart 10 for transportation. In other words, the two transport carts 10 in the folded state can be superimposed and nested while facing each other. In this case, since the fourth top partial panel 11d of the top panel 11 is placed on the fifth top partial panel 11e, the top panels 11 of the two nested carriages 10 interfere with each other. never. Also, during nesting, the inclined upper end portions 14a and 15a of one of the carriages 10 enter the other carriage 10 from a position lower than the top panel 11 of the other carriage 10 (FIG. 37(a)). ) (b)). Therefore, at the time of nesting, it is possible to prevent the inclined upper end portions 14a and 15a of one of the transportation trucks 10 from colliding with the top panel 11 of the other transportation truck 10. Damage can be prevented. As a result, the workability of nesting the two carriages 10 is improved.

(Modification 7)
39 to 43 show the carriage 10 for transportation according to the seventh modification. 39 to 43, similarly to FIGS. 16 to 19 (Modification 1), the top panel 11 is a pair of top panels that can be folded around the axis A1 along the longitudinal direction (X direction) of the carriage 50. It has partial panels 11d and 11e. The top panel 11 has a thin portion 77 located inside in the plane direction (XY plane direction) and a peripheral edge of the thin portion 77, and protrudes downward (minus side in the Z direction) from the thin portion 77. and a bank portion 78 . That is, the total thickness of the outer circumference of the top panel 11 is thicker than the thin portion 77 . In the deployed state, bank 78 rests on front panel 12 , rear panel 13 , first side panel 14 and second side panel 15 . At this time, the cross section of the top panel 11 perpendicular to the width direction of the carriage 50 and the cross section perpendicular to the longitudinal direction of the carriage 50 each have a substantially U-shaped opening downward (see FIG. 41).

39 to 41 show the top panel 11 in the folded state. In this case, when viewed from the front (FIG. 40), the fifth top surface partial panel 11e has a substantially U-shape that opens downward.

As shown in FIGS. 42(a) and 42(b), the fourth top panel 11d is folded around the axis A1 and placed on the fifth top panel 11e. In this case, the fifth top panel 11e may be fixed to the first side panel 14 and the second side panel 15 so as not to rotate.

As shown in FIG. 43, during nesting, the first side panel 14 and the second side panel 15 of one of the transportation carts 10 pass below the thin portion 77 of the top panel 11 of the other transportation cart 10. to enter the other carriage 10. At this time, a gap is secured between the first side panel 14 and the second side panel 15 of one of the transportation carts 10 and the thin portion 77 of the top panel 11 of the other transportation cart 10 . Therefore, during nesting, it is possible to prevent the first side panel 14 and the second side panel 15 of one of the carriages 10 from colliding with the top panel 11 of the other carriage 10. , 14 and 15 can be prevented from being deformed or damaged. As a result, the workability of nesting the two carriages 10 is improved.

(Modification 8)
FIGS. 44(a) and 44(b) show the carriage 10 according to Modification 8. FIG. 44(a) and 44(b), similarly to FIGS. 16 to 19 (Modification 1), the top panel 11 is a pair of foldable panels centered on the axis A1 along the longitudinal direction (X direction) of the carriage 50. top surface partial panels 11d and 11e. 44(a) and 44(b), the top panel 11 is provided with a lifting mechanism 81 for lifting the top panel 11 upward. In this case, the lifting mechanism 81 is positioned between the fifth top panel 11e and the first side frame 51 (second side frame 52), but is not limited thereto. and the first side panel 14 (second side panel 15). The lifting mechanism 81 may be, for example, an elastic body such as a compression spring, or a mechanism utilizing repulsion of a magnet. A hinge structure is provided between the fourth top panel 11d and the fifth top panel 11e to prevent mountain folds. It is preferable to avoid

Furthermore, the top panel 11 is provided with a holding member 82 that holds the top panel 11 on the front panel 12 side against the force of the lifting mechanism 81 . In this case, the holding member 82 is positioned between the fourth top panel 11d and the first side frame 51 (second side frame 52), but is not limited to this, and may be positioned between the fourth top panel 11d. and the front panel 12. The holding member 82 is composed of, for example, a weight. Alternatively, the holding member 82 may be a mechanism utilizing magnet attraction.

As shown in FIG. 44(b), when the fourth top panel 11d is folded with respect to the fifth top panel 11e, the weight balance of the top panel 11 provided with the holding member 82 (weight) is lost. , the lifting mechanism 81 lifts the fifth top surface partial panel 11e. As a result, the front sides of the pair of top surface partial panels 11d and 11e can be lifted. At the time of nesting, the first side panel 14 and the second side panel 15 of one of the transportation carts 10 pass below the lifted top panel 11 of the other transportation cart 10 and enter the other transportation cart 10. do. Therefore, during nesting, it is possible to prevent the first side panel 14 and the second side panel 15 of one of the carriages 10 from colliding with the top panel 11 of the other carriage 10. , 14 and 15 can be prevented from being deformed or damaged. As a result, the workability of nesting the two carriages 10 is improved.

(Modification 9)
FIGS. 45(a)(b) and 46(a)(b) show the carriage 10 for transportation according to the ninth modification. 45(a)(b) and 46(a)(b), similarly to FIGS. 16 to 19 (Modification 1), the top panel 11 extends along the longitudinal direction (X direction) of the carriage 50. It has a pair of top surface partial panels 11d and 11e that can be folded around the axis A1. In addition, in FIGS. 45(a)(b) and 46(a)(b), a rear frame member 71 is provided in the portion of the carriage 50 on the rear side. The back frame member 71 extends between the first side frame 51 and the second side frame 52 . Since the rear frame member 71 is provided on the rear side of the carriage 50 in this way, the rear panel 13 is supported by the rear frame member 71, and the rear panel 13 can be prevented from being damaged. In this case, the rear frame member 71 is fixed to the first side frame 51 and the second side frame 52, but is not limited to this, and may be fixed to the connecting member 53 or the wheel mounting frames 67 to 69. do not have. Further, the rear panel 13 may or may not be fixed to the rear frame member 71, but if the rear panel 13 is fixed, the durability can be further improved.

One rear frame member 71 may be provided (see FIGS. 45A and 45B), or a plurality of rear frame members 71 may be provided (see FIGS. 46A and 46B). Further, the bottom panel 16 may be foldable toward the first side frame 51, and the bottom plate 58 may be foldable toward the second side frame 52 (FIGS. 45A and 45B). )reference). In this case, the bottom panel 16 may have a pair of foldable bottom partial panels 16a, 16b. Alternatively, the bottom panel 16 and the bottom plate 58 may each be foldable toward the back panel 13 (see FIGS. 46(a) and 46(b)).

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 Cart 51 First side frame 52 Second side frame 53 Connecting member 57 Center frame 58 Bottom plate 61 first wheel 62 second wheel 63 third wheel 64 fourth wheel 65 fifth wheel 66 sixth wheel

Claims (6)

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,
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,
The top panel and the front panel are each openable and closable,
The first side panel is fixed to the first side frame so that it cannot be opened and closed,
The second side panel is fixed to the second side frame so that it cannot be opened and closed,
The rear panel is fixed to the carriage so that it cannot be opened and closed.cage,
The top surface panel includes a plurality of top surface partial panels that can be folded around an axis along the longitudinal direction of the bogie, and the height of the top surface panel decreases from the rear side toward the front side. placed at an angle , 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,
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,
The top panel and the front panel are each openable and closable,
The first side panel is fixed to the first side frame so that it cannot be opened and closed,
The second side panel is fixed to the second side frame so that it cannot be opened and closed,
The rear panel is fixed to the carriage so that it cannot be opened and closed,
The top panel includes a plurality of top panel parts that can be folded around an axis along the longitudinal direction of the bogie, and the top panel includes a thin portion positioned on the inner side in the plane direction and a peripheral edge of the thin portion. and a bank portion projecting downward from the thin portion. 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,
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,
The top panel and the front panel are each openable and closable,
The first side panel is fixed to the first side frame so that it cannot be opened and closed,
The second side panel is fixed to the second side frame so that it cannot be opened and closed,
The rear panel is fixed to the carriage so that it cannot be opened and closed,
The top panel includes a plurality of top panel parts that can be folded about an axis along the longitudinal direction of the carriage, the top panel is provided with a lifting mechanism for lifting the top panel, and the top panel is provided with a lifting mechanism that lifts the top panel. A cart for transportation, wherein a panel is provided with a holding member that holds the top panel on the front panel side against the force of the lifting mechanism. 4. The carrier according to any one of claims 1 to 3 , which can be nested with another carrier with the front panel sides facing each other. The connecting member has a central frame extending in the longitudinal direction of the bogie, and a wheel mounting frame connected to the central frame and having wheels mounted thereon. 5. The transport trolley according to any one of claims 1 to 4 , wherein the carriage is located on the rear side. The front panel is foldably attached to the first side panel, and can be arranged at a position overlapping the rear panel of the other transportation trolley when nested with another transportation trolley. A transport trolley according to any one of claims 1 to 5 .

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