JP7193024B2 - Panel container and transport trolley - Google Patents

Description

This embodiment relates to a panel container and a cart for transportation.

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 body having a pair of side frames, and the carriage body has a heat-insulating carriage cover in order to insulate or protect a load such as food from heat or cold. be worn. As such a cart for transportation, for example, the one disclosed in Patent Document 1 is known. In addition, conventionally, not only those mounted on carts, but also heat insulation containers are known in which heat insulation panels can be assembled into a box shape and the assembled box shape heat insulation panels can be disassembled (for example, Patent Document 2).

Japanese Unexamined Patent Application Publication No. 2013-233970 JP 2015-199527 A

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 example). 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 panels into a box shape and mount them on the carriage body, but in this case, there is a risk that the work of disassembling and folding the panels will be complicated. In addition, heat storage material may be attached to the inner surface of the panel on the top side in consideration of cold insulation and heat retention effects, but the weight of the heat storage material and the panel's own weight bend the panel downward, effectively making it a panel. There is a risk that the panel will fall due to the reduction in the width of the panel.

An object of the present disclosure is to provide a panel container and a carriage that facilitate assembly and folding of the panels and prevent the panels placed on the top surface from falling off due to their own weight or the load of the heat storage material.

A panel container according to the present embodiment is a panel container, and includes a plurality of side panels adjacent to each other, a first hinge portion provided on the side panel, and the side panel via the first hinge portion. and a top panel that is bendably connected to the top panel, wherein the top panel is a first partial panel that is connected to the side panel via the first hinge portion, and the first partial panel and a second partial panel bendably connected to the first partial panel via the second hinge, wherein the first hinge is and the second hinge part is provided along the inner surface of the top panel.

In the panel container according to the present embodiment, the top panel is provided with a guide portion that protrudes to the outer surface of the side panel that is not provided with the first hinge portion when the top panel is closed. may be

In the panel container according to the present embodiment, when the side panels that are not provided with the first hinge portion and do not contact each other are defined as the first side panel and the second side panel, the second a first engaging member detachably engaging the partial panel and the first side panel; and a second engaging member detachably engaging the second partial panel and the second side panel. There may be two engagement members. Further, the main surface of the first side panel or the main surface of the second side panel may be in contact with the end surface of the second partial panel.

In the panel container according to this embodiment, the top panel includes a first auxiliary beam arranged on the inner surface of the first partial panel and a second auxiliary beam arranged on the inner surface of the second partial panel. and an auxiliary beam, wherein the second hinge portion is configured by a hinge provided on the inner surface of the top panel, and the hinge is provided between the first auxiliary beam and the second auxiliary beam You may join with each.

In the panel container according to the present embodiment, the outer surfaces of the first partial panel and the second partial panel of the top panel are provided so as to contact each other only when the top panel is closed. A pair of reverse folding prevention pieces may be provided.

In the panel container according to the present embodiment, the panel container further includes a bottom panel, and the direction along the inner surface of the top panel and perpendicular to the rotation axis of the first hinge portion is defined as the first direction. when the lateral width of the first partial panel along the first direction is 1.0 to 2.0 times the sum of the thicknesses of the side panel including the first hinge portion and the bottom panel; may be within the range of

In the panel container according to the present embodiment, the side panel that is not provided with the first hinge portion is provided with a drop-off prevention piece that contacts the inner surface of the top panel when the top panel is closed. may have been

A carriage for transportation according to the present embodiment is a carriage for transportation, and has a first side frame, a second side frame, and a connecting member that connects the first side frame and the second side frame to each other. A truck body and the panel container attached to the truck body are provided.

In the carriage for transportation according to this embodiment, the panel container further includes a bottom panel, and the direction along the inner surface of the top panel and perpendicular to the rotation axis of the first hinge portion is defined as the first direction. Then, the lateral width of the first partial panel along the first direction is the same as the thickness of the side panel including the first hinge portion and the bottom panel along the thickness direction of the side panel. It may be in the range of 1.0 to 2.0 times the sum of the thickness and the thickness of the first side frame.

In the carriage for transportation according to the present embodiment, the second side frame may be provided with a fall prevention piece that abuts against the inner surface of the top panel when the top panel is closed.

According to the present embodiment, when the panels are assembled, it is possible to prevent the panel arranged on the top surface from falling off due to its own weight or the load of the heat storage material.

FIG. 2 is a perspective view showing the carriage for transportation of the first embodiment, in which each panel is in an assembled state; FIG. It is a perspective view showing the cart for transportation of the first embodiment, in which only the front panel is in a folded state. FIG. 4 is a perspective view showing the carriage for transportation of the first embodiment, in which each panel is in a folded state; It is a perspective view which shows a trolley main body. It is a sectional view showing each panel. It is a cross-sectional view showing the vacuum insulation material of each panel. It is a top view which shows the process which changes the front panel of the cart for transportation of 1st Embodiment from an assembled state to a folded state. It is a top view which shows the process which makes the back panel of the trolley for transportation of 1st Embodiment a folding state from an assembled state. It is a top view which shows the process which changes the top panel of the cart for transportation of 1st Embodiment from an assembled state to a folded state. It is a front view which shows the process which changes the top panel of the cart for transportation of 1st Embodiment from an assembled state to a folded state. FIG. 11 is a front view illustrating a top panel according to modification 1; FIG. 11 is a front view illustrating a top panel according to modification 2; FIG. 11 is a front view illustrating a top panel according to modification 3; FIG. 11 is a front view for explaining a top panel according to modification 4; FIG. 11 is a front view for explaining a top panel according to modification 5;

An example of the panel container and the carriage for transportation of the present disclosure will be described below with reference to the drawings and the like. However, the panel container and carriage of the present disclosure are not limited to this example or the embodiments described below.

In addition, each figure shown below is shown typically. Therefore, the size and shape of each part are appropriately exaggerated for easy understanding. In each figure, hatching indicating cross sections of members is omitted as appropriate. 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 the direction parallel to the longitudinal direction of the transportation trolley in a plane parallel to the floor surface on which the transportation trolley is arranged, and the Y direction is the transportation trolley. is a direction perpendicular to the X direction in a plane parallel to the floor on which is arranged. The Z direction is a direction perpendicular to the X and Y directions, that is, the vertical direction.

When the panel container is assembled on the carriage for transportation, the side on which the panel having the main surface parallel to the Z direction for loading and unloading the load is usually arranged in the panel container is the +X direction in the X direction, and the panel The side on which the facing panels are arranged is also referred to as the -X direction, the floor surface side in the Z direction is also referred to as the -Z direction, and the side opposite to the -Z direction is also referred to as the +Z direction. Also, the Z direction is sometimes referred to as the vertical direction, the +Z direction as the upper side, and the -Z direction as the lower side. The right hand side is also called the +Y direction in the Y direction, and the side opposite to the +Y direction is also called the -Y direction when viewed from the +X direction side toward the floor in the -Z direction.

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

Of the six surfaces constituting each panel constituting the panel container, the widest pair of surfaces facing opposite sides are defined as main surfaces. The main surface of each panel on the heat insulation space side in the assembled panel container is the inner surface, and the main surface of each panel on the opposite side to the heat insulation space is the outer surface. Moreover, in each panel, the surfaces other than the main surface of the panel are the end surfaces.

1. First Embodiment (a) Configuration of Cart for Transportation The configuration of the car for transportation according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG. FIG. 1 is a perspective view of a cart 10 for transportation according to a first embodiment of the present disclosure, with a panel container 30 in an assembled state. FIG. 2 is a perspective view of the carriage 10 for transportation according to the first embodiment, in which only the front panel 12 of the panel container 30 is in a folded state. FIG. 3 is a perspective view of the carriage 10 for transportation according to the first embodiment, in which the panel container 30 is in a folded state. FIG. 4 is a perspective view of the carriage body 50. As shown in FIG.

It should be noted that the carriage for transportation and the panel container are in an assembled state, which means that each panel is assembled into a box shape, and a heat insulating space is formed in the accommodation space 20 that accommodates the load surrounded by each panel. The folded state refers to a state in which each panel is folded and no heat insulating space is formed in the housing space 20 .

As shown in FIGS. 1 to 3, the carriage 10 for transportation of the first embodiment includes a carriage body 50, a panel container 30 that can be assembled with the carriage body 50, and a panel container 30 that can be folded. It has panels 11-16. The carriage 10 for transportation can be used with the panels 11 to 16 of the panel container 30 assembled as shown in FIG. 1 and used with the panels 11 to 16 of the panel container 30 folded as shown in FIG. In the latter case, the other carriages can be partially overlapped along the lateral direction, ie nested.

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 carriage 10 for transportation, a storage space 20 capable of storing a load is surrounded by the six panels 11 to 16 constituting the panel container 30 to form an insulating space. It is configured such that the temperature change inside the truck 10 is suppressed as much as possible. On the other hand, when the carrier 10 is not used, it is possible to store a plurality of carriers 10 compactly by nesting them together with another carrier 10 of the same type.

Next, based on FIG. 4, the structure of the trolley main body 50 will be described. The bogie body 50 includes a first side frame 51, a second side frame 52, and a connecting member 53 that connects the first side frame 51 and the second side frame 52 to each other. The connecting member 53 has six wheels 61 to 66, and the wheels 61 to 66 are attached to the connecting member 53 so as to face downward.

The first side frame 51 is provided on the -Y direction side of the carriage body 50 and protrudes from the connecting member 53 in the +Z direction. The first side frame is formed in a ladder shape and has a pair of struts 55 and a plurality of horizontal beams 56 each extending in the X direction between the pair of struts 55 . The plurality of horizontal beams 56 are arranged at substantially equal intervals from each other along the vertical direction. Two wheels 61 and 62 are provided on the lower side of the first side frame 51 .

Of the pair of struts 55, the +X direction strut 55a is directly connected to the wheel mounting frame 67, but the -X direction side strut 55b is not directly connected to the wheel mounting frame 67 and is not connected to the wheel mounting frame 67. away. By doing so, the central frame 57 of the other carrier 10 does not interfere with the support 55 during nesting. Further, the horizontal beam 56 arranged at the lowest stage is connected to the wheel mounting frame 67 by the central connecting strut 54 . Alternatively, both of the pair of struts 55 a and 55 b may be connected to the wheel mounting frame 67 only by the central connecting strut 54 without being directly connected to the wheel mounting frame 67 .

The second side frame 52 is provided at the other end in the +Y direction of the carriage body 50 in the longitudinal direction, and protrudes upward from the connecting member 53 . The configuration of the second side frame 52 is substantially the same as the configuration of the first side frame 51, and is arranged so as to be point-symmetrical to the first side frame 51 in plan view. Two wheels 65 and 66 are provided on the lower side of the second side frame 52 .

The connecting member 53 has a central frame 57 extending in the Y direction, which is the longitudinal direction of the bogie body 50, and three wheel mounting frames 67 to 69 respectively connected to the central frame 57 and extending in the X direction. The wheel mounting frames 67 to 69 are arranged below the central frame 57 so as to be spaced apart from each other.

The center frame 57 is arranged substantially in the center of the carriage body 50 in the Y direction. The center frame 57 has a narrow width that does not interfere with nesting the carriage 10 and the panel container 30 together. The center frame 57 is provided above the wheel mounting frames 67 to 69 so as not to interfere with the wheel mounting frames 67 to 69 of the other transport carts 10 during nesting.

The wheel mounting frames 67 to 69 include a first wheel mounting frame 67 arranged on the side of the first side frame 51 and a second wheel mounting frame 68 arranged between the first side frame 51 and the second side frame 52. and a third wheel mounting frame 69 arranged on the second side frame 52 side.

The distance in the Y direction between the first wheel mounting frame 67 and the second wheel mounting frame 68 and the distance in the Y direction between the second wheel mounting frame 68 and the third wheel mounting frame 69 may be the same. can be different.

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

The width of the second wheel mounting frame 68 in the Y direction is narrow enough not to interfere with the nesting of the carriages 10 for transportation. The third wheel mounting frame 69 is provided at the +Y direction side end of the central frame 57, and the +X direction side end and the -X direction side end of the third wheel mounting frame 69 are respectively provided with the fifth wheels 65. and a sixth wheel 66 are attached.

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 them, the first wheel 61, the second wheel 62, the fifth wheel 65, and the sixth wheel 66 are free wheels, and each rotates along an axle parallel to the horizontal plane (XY plane), and rotates in the vertical direction. It is possible to swivel about an axis (Z-axis). On the other hand, the third wheel 63 and the fourth wheel 64 are fixed wheels, and although they can rotate along axes parallel to the horizontal plane (XY plane), they can rotate around the vertical axis (Z axis). It is impossible to turn.

note that. The wheels 61 to 66 are connected to the center fixed wheel (the third wheel 63 and the fourth wheel 64) and either the front or rear wheel so that the transport truck 10 can travel straight ahead with stability when the load is placed on it. Two wheels, one free wheel (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.

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 facilitate turning 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. In this case, either the first wheel 61 and the second wheel 62 or the fifth wheel 65 and the sixth wheel 66, either front or rear wheels, are switched from free wheels to fixed wheels in order to ensure running aptitude. can have a structure. However, not limited to this, the trolley body 50 has four wheels 61, 62, 65, and 66, and does not have the second wheel mounting frame 68, the third wheel 63, and the fourth wheel 64. good too.

A foldable bottom plate 58 is provided on the upper side of the connecting member 53 . The bottom plate 58 has a substantially rectangular parallelepiped shape and is arranged to extend between the first side frame 51 and the second side frame 52 along the Y direction, and is substantially separated from the first side frame 51 and the second side frame 52 in the X direction. have the same length. The bottom plate 58 has sufficient strength to hold the load of the load of the cart 10 for transportation.

The bottom plate 58 is rotatable about the rotation axis in the X direction with respect to the connecting member 53. As shown in FIGS. As shown, the bottom plate 58 can be lifted relative to the connecting member 53 with the vicinity of the +Y direction end of the bottom plate 58 as a rotation axis, and can be folded to a position adjacent to the second side frame 52 . That is, when the panels 11 to 16 of the panel container 30 are to be assembled, the bottom plate 58 is arranged on a horizontal plane, and when the panels 11 to 16 of the panel container 30 are to be folded, the bottom plate 58 is positioned upward. side and is positioned adjacent to the second side frame 52 .

(b) Configuration of Panel Container The configuration of the panel container 30 and the panels 11 to 16 will be described with reference to FIGS. 1 to 3. FIG.

By assembling the panels 11 to 16, the panel container 30 can be in an assembled state in which an insulating space is formed inside, and by folding the panels 11 to 16, it is possible to take a folded state in which no insulating space is formed. is. In addition to being able to take the assembled state and the folded state independently, the panel container 30 can be integrated with the carriage body 50 by fixing a part of the panels 11 to 16 to the carriage body 50. Also in the carriage 10 for transportation, the panel container 30 can take an assembled state and a folded state. FIG. 1 shows the transport carriage 10 with the panel container 30 in the assembled state, and FIG. 3 shows the transport trolley 10 in which the panel container 30 is in the folded state, which can be nested. FIG. 2 shows a state in which only the front panel 12 of the panel container 30 is in a folded state.

As shown in FIG. 1, the panels 11 to 16 of the panel container 30 form a rectangular parallelepiped shape in the assembled state, and include a top panel 11, a front panel 12, a rear panel 13, a left panel 14, a right panel 15 and a bottom panel 16. contains. Front panel 12 , rear panel 13 , left panel 14 and right panel 15 are also referred to as side panels 17 . The top panel 11, the front panel 12, the rear panel 13, the left panel 14, the right panel 15 and the bottom panel 16 each have a substantially rectangular main surface. The main surfaces of the front panel 12 and the rear panel 13 have substantially the same size, and the main surfaces of the left panel 14 and the right panel 15 have substantially the same size. doing. Each of the panels 11 to 16 is composed of a plate-like member having rigidity and is flexibly not deformed during use.

When the panel container 30 is assembled, the six panels 11 to 16 surround the storage space 20 for storing the load, thereby forming a heat insulating space in the storage space 20. When the heat-insulating space is surrounded by a heat-insulating material, the inflow and outflow of heat to and from the outside is restricted, and good heat-insulating properties can be maintained. At least some 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 an assembled state in which an insulating space is formed to a folded state in which an insulating space is not formed, and can be changed from the folded state to an assembled state.

For this reason, when the carriage 10 for transportation is loaded with cargo requiring temperature control and is not used, the panels 11 to 16 of the panel container 30 can be folded to be nested with other carriages 10 for transportation. becomes possible. In addition, in the assembled state of the panel container 30, the end surfaces of the six panels 11 to 16 are in close contact with the main surface or the end surface of any other panel 11 to 16. Ensures airtightness.

(c) Internal Structure of Panel The structure of the panels 11 to 16 will be described. 5 is a cross-sectional view showing the heat insulating portion 40 of each panel 11 to 16, and FIGS. 6(a) and 6(b) are cross-sectional views showing the vacuum heat insulating material 41 included in the heat insulating portion 40. FIG.

As shown in FIG. 5, the heat insulating portion 40 of each of the panels 11 to 16 has a vacuum heat insulating material 41, a foam heat insulating material 42, a heat insulating surrounding portion 43, a heat insulating material protection member 44, and a heat shielding sheet 45. As shown in FIG.

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. 5) of the vacuum heat insulating material 41 . As a result, when the load stored in the storage space 20 collides with the panels 11 to 16, the foamed heat insulating material 42 absorbs the impact, thereby reducing the risk of the vacuum heat insulating material 41 being damaged. be able to.

The foam insulation 42 can be arranged adjacent to the vacuum insulation 41 at least on the housing space 20 side, and can be made of, for example, polyurethane foam, polystyrene foam, or both.

The heat insulating enclosing part 43 is arranged so as to surround the vacuum heat insulating material 41 . The heat insulating surrounding portion 43 is arranged adjacent to a portion of the foam heat insulating material 42 and fixed to the foam heat insulating material 42 . By arranging the heat insulating surrounding part 43 so as to surround the vacuum heat insulating material 41, the normality of heat insulation is improved as compared with the case where the heat insulating surrounding part 43 is not arranged. Alternatively, the vacuum heat insulating material 41 may have substantially the same cross-sectional area as the foam heat insulating material 42, and a panel configuration may be adopted in which the heat insulating enclosing portion 43 is not used.

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

The heat shield sheet 45 is formed so as to cover the entire outer peripheries of the vacuum heat insulating material 41 , the foam heat insulating material 42 , the heat insulating surrounding portion 43 and the heat insulating material protection member 44 . The heat shield sheet 45 can be arranged so as 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.

As shown in FIG. 6A, the vacuum heat insulating material 41 is composed of a core material 41a and an exterior material 41b having a gas barrier property, and is a heat insulating material obtained by decompressing the inside of the exterior material 41b. . FIG. 6B shows another example of the vacuum heat insulating material 41. As shown in FIG. In FIG. 6(a), voids are formed at both ends inside the vacuum heat insulating material 41, but in FIG. 6(b), no voids are formed. Voids may or may not occur depending on the method of manufacturing the vacuum heat insulating material 41 .

For 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. Porous bodies may also 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 adhesive layer and a gas barrier layer are laminated in this order from the core material 41a. 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.

(d) Side Panels The front panel 12, the rear panel 13, the left panel 14, and the right panel 15, which are the side panels 17, will be described.

(i) Front Panel As shown in FIG. 1, the front panel 12 is the panel located on the most +X direction side of the panel container 30 when the panel container 30 is in an assembled state. In addition, it is a panel that is assumed to be opened and closed frequently. The front panel 12 is arranged below the top panel 11 and above the bottom panel 16, with the main surface of the front panel 12 parallel to the Z direction. The principal surface of the front panel 12 is substantially orthogonal to the principal surface of the top panel 11 and substantially orthogonal to the principal surface of the bottom panel 16 . Further, the front panel 12 is arranged between the left panel 14 and the right panel 15, and the main surface of the front panel 12 is substantially perpendicular to the main surface of the left panel 14, and also substantially the main surface of the right panel. are orthogonal. The front panel 12 is arranged on the +X side of the rear panel 13 , and the main surface of the front panel 12 is substantially parallel to the main surface of the rear panel 13 .

FIG. 7 is a plan view showing the process of folding the front panel 12 of the panel container 30 from the assembled state, showing the vicinity of the front panel 12 without the top panel 11 from above. As shown in FIGS. 7A, 7B, and 7C, the front panel 12 has a foldable structure, and includes a first front partial panel 12a arranged on the side of the first side frame 51, and a It is composed of a second front partial panel 12b and a third front partial panel 12c arranged on the second side frame 52 side. The first front partial panel 12a is foldably attached to the left panel 14 via a first front hinge member 22a. The second front partial panel 12b is foldably attached to the first front partial panel 12a via a second front hinge member 22b. The third front partial panel 12c is foldably attached to the second front partial panel 12b via a third front hinge member 22c.

As shown in FIG. 1, the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c are all arranged in parallel to the vertical direction in the assembled state. On the other hand, in the folded state, the first front partial panel 12a is arranged on the +X direction side of the left panel 14, as shown in FIG. The second front partial panel 12b and the third front partial panel 12c are folded so as to overlap each other, rotate about the Z-axis direction as a rotation axis, and are arranged on the -Y direction side of the left panel . At this time, the second front partial panel 12b and the third front partial panel 12c are folded over and arranged around the outer side of the first side frame 51, and are substantially parallel to the left panel .

By arranging the second front partial panel 12b and the third front partial panel 12c in the folded state outside the first side frame 51, that is, on the -Y direction side, the storage space 20 for storing the load is created. can be widely secured. Further, when the bottom plate 58 is rotated toward the second side frame 52 and lifted, the first front partial panel 12a, the second front partial panel 12b, and the third front partial panel 12c may interfere with the rotating bottom plate 58. prevented.

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

The front panel 12 is detachably connected to the top panel 11 adjacent on the upper side by detachable members 33a and 33b. Specifically, the second front partial panel 12b is detachably connected to the second top partial panel 11b by a detachable member 33a, and the third front partial panel 12c is connected to the second top partial panel. 11b by a detachable member 33b.

The front panel 12 is detachably connected to the bottom panel 16 adjacent on the lower side by detachable members 34a and 34b. Specifically, the second front partial panel 12b is detachably connected to the bottom panel 16 by a removable member 34a, and the third front partial panel 12c is connected to the bottom panel 16 by a removable member 34b. is detachably connected by Further, the front panel 12 is detachably connected to the right panel 15 adjacent on the +Y direction side by a detachable member 35 .

(ii) Rear Panel The rear panel 13 is arranged on the −X direction side of the top panel 11, the front panel 12, the left panel 14, the right panel 15 and the bottom panel 16 when the panel container 30 is assembled. panel. Like the front panel 12, the rear panel 13 is arranged below the top panel 11 and above the bottom panel 16, with the main surface of the rear panel 13 parallel to the Z direction. ing.

FIG. 8 is a plan view showing the process of folding the back panel 13 of the panel container 30 from the assembled state, showing the vicinity of the back panel 13 without the top panel 11 from above. As shown in FIGS. 8(a) and 8(b), the rear panel 13 has a foldable structure. The first rear partial panel 13a arranged on the first side frame 51 side and the second side frame 52 side It consists of a second rear partial panel 13b which is arranged. The first rear panel 13a is fixed to the left panel 14, and the second rear panel 13b is foldably attached to the first rear panel 13a via a first rear hinge member 23a. .

As shown in FIG. 1, the first rear partial panel 13a and the second rear partial panel 13b are arranged parallel to each other in the vertical direction in the assembled state. On the other hand, in the folded state, as shown in FIG. 3, the first rear partial panel 13a does not move, and the second rear partial panel 13b folds over the first rear partial panel 13a to form the ZY plane. It becomes a substantially parallel arrangement. In this way, in the folded state, by removing the second rear partial panel 13b, substantially half the area of the rear panel 13 on the +Y direction side is opened. Note that the rear panel 13 may be open over the entire Y direction depending on how the first rear partial panel 13a and the second rear partial panel 13b are folded.

The rear panel 13 is detachably connected to the top panel 11 adjacent on the upper side by detachable members 31a and 31b. Specifically, the first back panel 13a is detachably connected to the second top panel 11b by a detachable member 31a, and the second back panel 13b is attached to the second top panel 11b. are detachably connected to each other by a detachable member 31b.

(iii) Left Panel The left panel 14 is a panel that is adjacent to the first side frame 51 and arranged on the −Y direction side of the first side frame 51 in both the assembled state and the folded state of the panel container 30 . Like the front panel 12 and the rear panel 13, the left panel 14 is below the top panel 11 and above the bottom panel 16, and the main surface of the left panel 14 is parallel to the Z direction. placed in an orientation. The left panel 14 is composed of one plate-like member. In addition, the left panel 14 does not move with respect to the first side frame 51 in both the assembled state and the folded state of the panel container 30, and is large enough to cover the entire -Y direction side of the first side frame 51. It is fixed to the first side frame 51 by connecting means (not shown). The left panel 14 may be detachably fixed to the first side frame 51 .

(iv) Right Panel The right panel 15 is a panel that is adjacent to the second side frame 52 and arranged on the +Y direction side of the second side frame 52 in both the assembled state and the folded state of the panel container 30 . Like the left panel 14, the right panel 15 is also arranged below the top panel 11 and above the bottom panel 16, with the main surface of the right panel 15 substantially parallel to the Z direction. It is Like the left panel 14, the right panel 15 is composed of a single plate-like member. Moreover, the right panel 15 does not move with respect to the second side frame 52 in both the assembled state and the folded state of the panel container 30, and is large enough to cover the entire +Y direction side of the second side frame 52. It is fixed to the second side frame 52 by connecting means (not shown). Like the left panel 14 , the right panel 15 may be detachably fixed to the second side frame 52 .

The right panel 15 is detachably connected to the top panel 11 adjacent on the upper side by a detachable member 32 . Specifically, the right panel 15 is detachably connected to the second top panel 11b by a detachable member 32 . Also, the right panel 15 is detachably connected to the front panel 12 adjacent on the +X direction side by a detachable member 35 . Specifically, the right panel 15 is detachably connected to the third front partial panel 12c by a detachable member 35. As shown in FIG.

(e) Bottom Panel The bottom panel 16 is a panel arranged below the front panel 12, the rear panel 13, the left panel 14 and the right panel 15 when the panel container 30 is in the assembled state. The bottom panel 16 is disposed above the bottom plate 58 of the carriage body 50 and between the first side frame 51 and the second side frame 52 with the main surface of the bottom panel 16 oriented substantially parallel to the horizontal plane. ing. The bottom panel 16 is composed of one plate-like member, and can be folded by lifting it toward the first side frame 51 via a bottom hinge member (not shown).

The bottom panel 16 is detachably connected to the front panel 12 adjacent on the +X direction side by detachable members 34a and 34b. Specifically, the bottom panel 16 is detachably connected to the second front partial panel 12b by the detachable member 34a, and detachably to the third front partial panel 12c by the detachable member 34b. Concatenated.

(f) Top Panel As shown in FIG. 1, the top panel 11 is arranged above the front panel 12, the rear panel 13, the left panel 14 and the right panel 15 when the panel container 30 is assembled. The main surface of the top panel 11 is arranged so as to be substantially parallel to the horizontal plane.

9 and 10 are front views showing the process of folding the top panel 11 of the panel container 30 from the assembled state. ing. As shown in FIGS. 9A, 9B, 10A, 10B, and 10C, the top panel 11 has a foldable structure, and is arranged on the first side frame 51 side. It is composed of a top surface partial panel 11a and a second top surface partial panel 11b arranged on the second side frame 52 side. When the panel container 30 is assembled, the Y-direction length of the second top partial panel 11b of the top panel 11 is longer than the Y-direction length of the first top partial panel 11a. The first top surface partial panel 11a is foldably attached to the left panel 14 via a first top surface hinge member 21c. The second top surface portion panel 11b is foldably attached to the first top surface portion panel 11a via a second top surface hinge member 21d.

As shown in FIG. 9(a), a heat storage material accommodating portion 70 is attached to the main surface of the top panel 11 on the accommodation space 20 side, that is, the inner surface. The heat storage material consists of a member that can maintain a low temperature state for a certain period of time in order to keep the accommodation space 20 at a temperature lower than the normal temperature, and a member that itself can maintain a predetermined temperature in order to keep the accommodation space 20 at a predetermined temperature higher than the normal temperature. It means a member that can retain time, and includes what is called or described as a cold insulator, a cold insulator, a heat insulator, a heat insulator, a heat storage agent, or a cold storage agent. The heat storage material storage part 70 has a gap in which the heat storage material can be stored. may be The heat storage material storage part 70 may be made of fabric, non-woven fabric, mesh structural material, wire mesh structural material, etc. with many gaps in order to facilitate the transmission of cold air and heat from the heat storage material to the storage space 20.

When the heat storage material is used for the purpose of cold storage, it is effective to fix the heat storage material to the inner surface of the top panel as shown in FIG. target. However, when a large number of heat storage materials are attached to the inner surface of the top panel 11, the top panel 11 bends downward due to the weight of the attached heat storage materials.

As shown in FIGS. 1 and 9A, the −Y direction end, the +Y direction end, and the +X direction end of the top panel 11 correspond to the end face of the left panel 14 and the side frame, respectively. 52 and the end face of the front panel 12 from below. It is supported only by members 31a and 31b. The portions other than the end portions of the top panel 11, that is, the central portions of the top panel 11 in the X direction and the Y direction are not supported from below and easily receive the load of the heat storage material. , the elastic modulus of the members of the top panel 11, the weight of the top panel 11 itself, and the load of the heat storage material cause the top panel 11 to elastically deform downward, that is, bend.

When the downward deflection of the top panel 11 increases, the apparent length of the top panel 11 along the Y direction becomes shorter. The area in contact with the upper end of the side frame 52 is reduced. When the deflection increases further and the length of the top panel along the Y direction becomes shorter, the +Y direction end of the top panel 11 does not come into contact with the upper end of the second side frame 52 on the lower side. 11 drops downward.

The top panel 11 of this embodiment is composed of a first top partial panel 11a arranged on the first side frame 51 side and a second top partial panel 11b arranged on the second side frame 52 side. The first top panel 11a is foldably attached to the left panel 14 via a first top hinge member 21c, and the second top panel 11b is attached via a second top hinge member 21d. It is foldably attached to the first top surface partial panel 11a.

Further, as shown in FIG. 9B, the left panel 14 and the first top surface partial panel 11a are connected by a first top surface hinge member 21c, and the first top surface partial panel 11a is connected to the left surface panel 14. can be freely bent. Further, the first top surface partial panel 11a and the second top surface partial panel 11b are connected by a second top surface hinge member 21d, and the second top surface partial panel 11b is connected to the first top surface partial panel 11a. It is bendable.

The first top surface hinge member 21c connects the upper end of the outer surface of the left panel 14 and the inner surface of the first top surface partial panel 11a. The second top surface hinge member 21d connects the inner surface of the first top surface portion panel 11a and the inner surface of the second top surface portion panel 11b.

The first top surface hinge member 21c is the first hinge portion, the second top surface hinge member 21d is the second hinge portion, the first top surface partial panel 11a is the first partial panel, and the second top surface partial panel 11b. is the second partial panel, the first partial panel is connected to the left panel via the first hinge portion, the first partial panel is provided with the second hinge portion, and the second partial panel is provided with the second hinge portion. The partial panel is foldably connected to the first partial panel via the second hinge. The first hinge portion is provided along the outer surface of the left panel, and the second hinge portion is provided along the inner surface of the top panel, i.e., between the first partial panel and the second partial panel. , along the inner surface of each.

With such a structure, when a force is applied to the first top panel 11a to rotate the first top panel 11a clockwise, the outer surface of the left panel 14 and the first A mutually pulling force acts between them and the end face on the -Y direction side of the one top surface partial panel 11a. However, the first top surface hinge member 21c restricts the first top surface portion panel 11a from moving away from the left surface panel 14, thereby suppressing the clockwise rotation of the first top surface portion panel 11a. can do. Compared to the case where the first top surface hinge member 21c connects the upper end of the inner surface of the left panel 14 and the first top surface partial panel 11a, the top surface panel 11 does not have the first top surface portion panel 11a. The structure makes it difficult to rotate clockwise.

In addition, when a force is applied to the first top panel 11a to rotate the second top panel 11b counterclockwise, the +Y direction side end of the first top panel 11a A pull force acts between the surface and the inner surface of the -Y direction side end surface of the second top panel 11b. However, the second top surface hinge member 21d restricts the second top surface portion panel 11b from separating from the first top surface portion panel 11a, so that the second top surface portion panel 11b moves counterclockwise. Rotation can be suppressed. Compared to the case where the second top surface hinge member 21d connects the outer surface of the first top surface portion panel 11a and the outer surface of the second top surface portion panel 11b, the top surface panel 11 This structure makes it difficult to rotate the face portion panel 11b counterclockwise.

On the other hand, when folding the top panel 11, as shown in FIGS. 9(b) and 10(a)(b), the second top partial panel 11b of the top panel 11 is slightly lifted upward. , the first top surface partial panel 11a is rotated counterclockwise with respect to the left surface panel 14 via the first top surface hinge member 21c, and the second top surface partial panel 11b is moved to the second top surface It can be rotated clockwise with respect to the first top surface partial panel 11a via the hinge member 21d. As a result, a gap along the Y direction is generated between the tip of the second top surface partial panel 11b on the +Y direction side and the second side frame 52, so that the second top surface partial panel 11b can be separated from the first side frame. It can be easily folded to a position adjacent to 51.

As the hinge member used for the first top surface hinge member 21c and the second top surface hinge member 21d, one of the two panels to be connected can be bent, that is, rotated with respect to the other panel. A variety of mechanisms and materials can be selected. For example, a bendable flexible cloth material, a resin film, a metal film, or the like may be used. Alternatively, resin or metal hinges may be used. In the present disclosure, a hinge is composed of a combination of two or more pieces made of resin or metal, and one piece of the two pieces is fixed to the other piece only around a predetermined axis. , shall refer to a member having a rotatable structure.

As described above, the top panel 11 has a structure that does not easily fall downward even under the load of the heat storage material or the like. , and the back panel 13 adjacent on the -X direction side by detachable members. This makes it more difficult for the top panel 11 to drop downward.

The second top partial panel 11b is detachably connected to the second front partial panel 12b by a detachable member 33a, and the second top partial panel 11b is connected to the third front partial panel 12c. However, they are detachably connected by a detachable member 33b. In addition, the second top panel 11b is detachably connected to the first back panel 13a by an attachment/detachment member 31a, and the second top panel 11b is connected to the second back panel 13b. are detachably connected to each other by a detachable member 31b.

The detachable members 31a, 31b, 33a, and 33b can be flexible strip-shaped members that can be arranged across two panels, and can be made of, for example, cloth material, resin film, or metal film. can be done. The detachable members 31a, 31b, 33a and 33b have a structure capable of detachably engaging one of the two panels with the other panel. A pair of hook-and-loop fastener structures can be used. In addition, a pair of male and female button structures may be used, or a so-called snap lock, patch lock, or the like having a clasp structure made of metal or resin may be used. Detachable members 32, 34a, 34b and 35 can also have the same structure.

The front panel 12 is the first side panel, the rear panel 13 is the second side panel, the detachable members 33a and 33b are the first engaging members, the detachable members 31a and 31b are the second engaging members, and the second When the top surface partial panel 11b is used as the second partial panel, the first engaging member detachably engages the second partial panel and the first side panel, and the second engaging member releasably engages the second partial panel and the second side panel.

Thereby, even if the second partial panel receives the load of the heat storage material, etc., it is engaged with the first side panel and the second side panel by the first engaging member and the second engaging member. , it is possible to effectively prevent the second partial panel from dropping downward.

Also, the first engaging member and the second engaging member indicate an engagement state between the second partial panel and the first side panel and an engagement state between the second partial panel and the second side panel. Since the structure is such that the state can be easily resolved, the workability of folding the top panel 11 of the panel container 30 is not hindered.

Furthermore, the rear panel 13, which is the second side panel, and the second top panel 11b, which is the second partial panel, are in contact with the main surface of the rear panel 13 and the end surface of the second top panel 11b. Since they are in contact with each other, the rear panel 13 cannot directly support the top panel 11 from below. Therefore, in such a panel contact structure, it is effective to provide the detachable members 31a and 31b as engaging members in order to prevent the top panel 11 from falling off from the rear panel 13. FIG. Although the front panel 12 is the first side panel and the rear panel 13 is the second side panel, the rear panel 13 may be the first side panel and the front panel 12 may be the second side panel.

FIG. 10(c) shows an enlarged view of part A near the left panel 14 and the first side frame 51 in FIG. 10(b). When the top panel 11 is folded, as shown in FIG. 10(c), the second top partial panel 11b of the top panel 11 should be positioned along the Y direction with respect to the folded bottom panel 16 as far as possible. preferably close together.

The width of the first top partial panel 11a along the inner surface of the top panel 11, when the direction perpendicular to the rotational axis of the first top hinge member 21c is defined as the first direction. However, the thickness of the left panel 14, which is the side panel 17 provided with the first top hinge member 21c, and the thickness of the bottom panel 16, and the thickness of the first side frame 51 along the thickness direction of the left panel 14, which is the side panel 17 may be in the range of 1.0 to 2.0 times the sum of

In FIG. 10(c), the width along the first direction of the first top surface partial panel 11a is the width along the Y direction, so this is W11a. Each thickness of the panel 16 has a length along the Y direction, so if these are D14, D51 and D16, and the sum of D14, D51 and D16 is DT, W11a is 1.0 times DT. to 2.0 times DT.

With W11a having such a value, the first top partial panel 11a has a width that approximates the sum of the thickness of the left panel 14, the thickness of the first side frame 51, and the thickness of the previously folded bottom panel 16. Therefore, when the top panel 11 is folded downward, the bottom panel 16 is not damaged, and the second top partial panel 11b can be moved in the -Y direction, A sufficient space can be formed on the +Y direction side. Therefore, another folded transportation trolley 10 can be easily nested on the transportation trolley 10 .

Also, in this embodiment, it is assumed that the panel container 30 is attached to the carriage body 50 and used as the carriage 10 for transportation, but the panel container 30 can also be used independently. In this case, in FIG. 10(c), the width range of the first top surface partial panel 11a can be examined assuming that the first side frame 51 does not exist. The width W11a along the Y direction of the first top surface partial panel 11a is preferably within the range of 1.0 times DT2 to 2.0 times DT2, where DT2 is the sum of D14 and D16. . As a result, the second top surface partial panel 11b can be brought closer to the -Y direction side, and a sufficient space can be formed on the +Y direction side.

(g) Folding and Assembling of Panel Container Next, the operation of folding and assembling the panel container 30 attached to the carriage 10 for transportation will be described. 7 to 10 are diagrams for explaining part of the process of sequentially disassembling the panel container 30 attached to the carriage 10 for transportation.

(i) Folding of Panel Container First, as shown in FIG. 1, it is assumed that the six panels 11 to 16 of the panel container 30 of the carriage 10 are assembled into a box shape. A substantially rectangular parallelepiped accommodation space 20 is formed inside each of the panels 11 to 16 . Although not shown, the storage space 20 may store loads such as foodstuffs.

Next, as shown in FIG. 2, by folding the front panel 12, the front panel transitions from the assembled state to the folded state. First, as shown in FIG. 7( a ), the detachable member 35 is removed from the right panel 15 . Similarly, the detachable members 33a and 33b are removed from the top panel 11, and the detachable members 34a and 34b are removed from the bottom panel. Subsequently, the third front partial panel 12c is folded so as to overlap the second front partial panel 12b. Specifically, the third front partial panel 12c rotates clockwise in plan view with respect to the second front partial panel 12b around the third front hinge member 22c.

Subsequently, as shown in FIG. 7B, the second front partial panel 12b and the third front partial panel 12c overlap each other, and in this state, the second front partial panel 12b and the third front partial panel 12c overlap each other. It rotates clockwise in plan view with respect to the first front partial panel 12a around the second front hinge member 22b.

After that, as shown in FIG. 7(c), the second front partial panel 12b and the third front partial panel 12c are positioned around the outside of the first side frame 51, that is, on the −Y direction side and +X direction side of the first side frame 51. Move around direction side. Specifically, the first front partial panel 12a rotates clockwise in plan view with respect to the left panel 14 around the first front hinge member 22a. At this time, the first front partial panel 12a is positioned on the +X direction side with respect to the left panel 14, and the second front partial panel 12b and the third front partial panel 12c are positioned at -Y direction with respect to the first side frame 51. Located on the direction side. In this manner, the front panel 12 is folded, and the front side of the panel container 30 of the carriage 10 is completely opened as shown in FIG. 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 FIG. 3, by folding the bottom panel 16, the bottom panel 16 shifts from the assembled state to the folded state. Specifically, the bottom panel 16 is rotated counterclockwise with respect to the first side frame 51 when viewed from the front. As a result, the bottom panel 16 is folded so as to overlap the +Y direction side of the first side frame 51 . In this case, the bottom panel 16 is attached to the first side frame 51 by hook-and-loop fasteners (not shown).

Next, as shown in FIG. 3, by folding the bottom plate 58, the bottom plate 58 shifts from the assembled state to the folded state. 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 -Y direction side of the second side frame 52 . 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. 8A and 8B, by folding the back panel 13, the back panel 13 changes from the assembled state to the folded state. Specifically, as shown in FIG. 2 , the detachable members 31 a and 31 b engaging the top panel 11 and the rear panel 13 are removed from the rear panel 13 . Next, as shown in FIGS. 8A and 8B, the detachable member 36 engaging the second rear panel 13b and the right panel 15 is removed from the right panel 15. Next, as shown in FIGS. After that, the second rear partial panel 13b is rotated counterclockwise in plan view with respect to the first rear partial panel 13a. As a result, the second rear partial panel 13b is folded so as to overlap the first rear partial panel 13a, and is arranged on the -X direction side of the first rear partial panel 13a. On the other hand, the first rear partial panel 13a maintains the same position even in the folded state as in the assembled state.

Finally, as shown in FIGS. 9A, 9B and 10A, 10B, by folding the top panel 11, the top panel 11 changes from the assembled state to the folded state. First, as shown in FIGS. 9A and 9B, the detachable member 32 is removed from the right panel 15. Then, as shown in FIGS. Subsequently, the first top surface partial panel 11a is rotated counterclockwise in a front view with respect to the left panel 14 around the first top surface hinge member 21c, and the second top surface partial panel 11b is rotated to the second top surface hinge member 21c. The top hinge member 21d is rotated clockwise with respect to the first top partial panel 11a when viewed from the front.

Subsequently, as shown in FIGS. 10A and 10B, the second top surface partial panel 11b moves to the +Y direction side of the first side frame 51. Then, as shown in FIGS. Specifically, the first top surface partial panel 11a rotates around the first top surface hinge member 21c clockwise with respect to the left panel 14 when viewed from the front, and the second top surface partial panel 11b rotates around the second top surface hinge member 21c. It rotates clockwise around the top hinge member 21d with respect to the first top partial panel 11a when viewed from the front. As a result, the second top partial panel 11b is folded downward and arranged to hang down from the first top partial panel 11a. At this time, the second top surface partial panel 11b is arranged on the +Y direction side of the first side frame 51 so as to be adjacent to the first side frame 51 .

In this manner, the six panels 11 to 16 of the panel container 30 of the carriage 10 are all folded. When the cart 10 for transportation is not used, the panels 11 to 16 of the panel container 30 can be folded to reduce the overall volume as much as possible for storage and transportation. In the above description, the front panel 12, the bottom panel 16, the rear panel 13, and the top panel 11 are folded in this order. good too.

(ii) Assembly of Panel Container The assembly method of the panel container 30 of the carriage 10 can be performed by performing the folding method described above in reverse order.

9(a) and 9(b) and FIGS. 10(a) and 10(b). The top panel 11 is changed from the folded state to the assembled state. After that, the detachable member 32 is attached to the right panel 15 . Then, reverse operations of FIGS. 8(a) and 8(b) are performed. That is, the rear panel 13 is changed from the folded state to the assembled state, and then the detachable members 31a and 31b are attached so that the rear panel 13 and the top panel 11 are engaged with each other.

Next, the bottom plate 58 and the bottom panel 16 are changed from the folded state to the assembled state. After that, reverse operations of FIGS. 7A, 7B, and 7C are performed. That is, the front panel 12 is changed from the folded state to the assembled state. After that, the detachable members 33a and 33b are attached so that the top panel 11 and the front panel 12 are engaged with each other. Further, the attachment/detachment member 35 is attached to bring the right panel 15 and the front panel 12 into a state of engagement. In this way, the work of assembling the panels 11 to 16 is completed. As for the order of assembly, the rear panel 13, the top panel 11, the bottom panel 16, and the front panel 12 can be assembled in that order.

In this embodiment, the panel container 30 having the panels 11 to 16 constitutes the carriage 10 for transportation in a state integrated with the carriage body 50, and in a state attached to the carriage 10 for transportation, the panel container 30 is Although it has been described that it can be assembled and folded, the present invention is not limited to this, and the panel container 30 may be separated from the carriage body 50 and used independently.

2. Modifications Various modifications and changes are possible without being limited to the above-described embodiments, and they are also within the scope of the present disclosure. Some modifications are given below.

(a) Modification 1
FIG. 11 is a diagram partially showing the panel container 30A of Modification 1 of the present embodiment, and is a front view of the vicinity of the top panel 11 seen from the +X direction side without the front panel 12. FIG. FIG. 11(a) is a diagram in which the top panel 11 of the panel container 30A is in an assembled state. At the upper end of the second side frame 52A of the panel container 30A, a drop-off prevention piece 81 is provided that contacts the inner surface of the second top partial panel 11b of the top panel 11. As shown in FIG. As a result, the front end of the second top partial panel 11b in the top panel 11 in the assembled state, that is, the inner surface on the side closer to the right panel 15, is not only the upper end of the second side frame 52A but also the second side frame. It also abuts on the falling prevention piece 81 provided on the -Y direction side of 52A.

In the panel container 30A of this modified example, by attaching the heat storage material to the top panel 11, the top panel 11 is bent downward, and the tip of the second top partial panel 11b is displaced in the -Y direction. Even so, the drop-off prevention piece 81 can come into contact with the inner surface of the tip of the second top panel 11b, so that the top panel 11 can be disengaged from the second side frame 52A and dropped downward. It can make it harder to put away.

The method for folding the top panel 11 is the same as in the first embodiment. That is, as shown in FIG. 11(b), by slightly lifting the second top panel 11b of the top panel 11, the first top panel 11a is moved via the first top hinge member 21c. is rotated counterclockwise with respect to the left panel 14, and the second top surface partial panel 11b is rotated clockwise with respect to the first top surface partial panel 11a via the second top surface hinge member 21d. can be moved. As a result, a gap along the Y direction is generated between the tip of the second top surface partial panel 11b on the Y direction side and the second side frame 52A, so that the second top surface partial panel 11b is separated from the first side frame. It can be easily folded to a position adjacent to 51.

In this modification, the drop-off prevention piece 81 has a substantially triangular cross-sectional shape cut along the YZ plane, but is not limited to this, and may be any shape such as a quadrangle, polygon, circle, or a shape surrounded by curved surfaces. may be Further, as the material of the drop-off preventing piece 81, hard resin, metal, carbon, or the like may be used, or soft resin such as rubber, foamed resin, or the like may be used. The fall prevention piece 81 may be fixed to the second side frame 52A, or may be detachably attached. Also, the drop-off preventing pieces 81 may be continuously extended along the X direction, or may be spaced apart along the X direction.

Moreover, although this modification relates to the panel container 30A provided on the carriage 10 for transportation, it can also be applied to the case of using the panel container alone. In this case, as shown in the panel container 30B of FIG. 11(c), the drop-off preventing piece 81 can be provided directly on the inner surface of the upper end of the right panel 15A instead of the upper end of the second side frame. As a result, the tip of the second top panel 11b of the top panel 11 in the assembled state abuts against the falling-off prevention piece 81 provided on the inner surface of the right panel 15A, and the top panel 11 bends downward. It is possible to make it even more difficult for the top panel 11 to fall downward even when a crack occurs. In addition, the drop-off prevention piece 81 is not limited to being provided on the second side frame 52 or the right panel 15, but is also provided on the front panel 12 or the rear panel 13, which are the side panels 17 on which the first top surface hinge member 21c is not provided. may be provided.

(b) Modification 2
FIG. 12 is a front view partially showing a panel container 30C of Modification 2 of the present embodiment. FIG. 12(a) is a diagram in which the top panel 11D of the panel container 30C is in an assembled state. The top panel 11D of the panel container 30C is provided with a hook-shaped guide portion 82 projecting from the outer surface on the right panel 15 side. The guide portion 82 is arranged to extend to the outer surface of the right panel 15 in the +Y direction so as to straddle the upper end of the right panel 15 at the tip of the second top panel 11b in the +Y direction.

As a result, when the top panel 11D is assembled, even if the top panel 11D is bent downward due to heat storage material or the like, the tip of the second top partial panel 11b is prevented from shifting in the -Y direction. The guide portion 82 restrains. That is, when the tip of the second top panel 11b tries to shift in the -Y direction, a guide portion 82 projecting from the upper end of the right panel 15 to the outer surface in a hook shape moves the right panel 15 toward the outer surface. Since the second top surface portion panel 11b is pressed in the -Y direction from the bottom, displacement of the second top surface portion panel 11b is restricted as much as possible. Therefore, it is possible to further prevent the top panel 11D from detaching from the second side frame 52 and dropping downward.

The method for folding the top panel 11D is the same as in the first modification. That is, as shown in FIG. 12(b), by slightly lifting the second top partial panel 11b of the top panel 11D, the first top partial panel 11a is moved via the first top hinge member 21c. is rotated counterclockwise with respect to the left panel 14, and the second top surface partial panel 11b is rotated clockwise with respect to the first top surface partial panel 11a via the second top surface hinge member 21d. can be moved. As a result, a gap along the Y direction is created between the tip of the second top surface partial panel 11b on the Y direction side and the second side frame 52, so that the second top surface partial panel 11b is separated from the first side frame. It can be easily folded to a position adjacent to 51.

Although the guide part 82 has a substantially L-shaped cross section cut along the YZ plane, it is not limited to this, and any shape can be selected as long as it can protrude from the outer surface of the right panel 15. can. As for the material of the guide portion 82, hard resin, metal, carbon, or the like, soft resin, foamed resin, or the like may be used. Further, the guide portions 82 may extend continuously along the X direction, or may be provided apart from each other along the X direction.

(c) Modification 3
FIG. 13 is a front view partially showing a panel container 30D of Modification 3 of the present embodiment. FIG. 13(a) is a diagram showing the assembled state of the top panel 11E of the panel container 30D. FIG. 13(b) is an enlarged view of portion B showing the vicinity of the contact portion between the top panel 11E and the left panel 14 in FIG. 13(a). FIG. 13(c) is an explanatory view of the portion of FIG. 13(b) showing that the top panel 11E is about to shift to the folded state. The second top surface hinge member 21e of the top surface panel 11E of the panel container 30D is configured by a hinge 84 provided on the inner surface of the top surface panel 11E. The hinge 84 is usually made of metal from the standpoint of strength, but may be made of resin or a combination of a resin member and a metal member.

An auxiliary beam 83 is provided on the inner surface of the top panel 11E and extends from the vicinity of the contact portion with the left panel 14 to the vicinity of the contact portion with the right panel 15 in a front view. The auxiliary beam 83 is composed of a first auxiliary beam 83a and a second auxiliary beam 83b. A first auxiliary beam 83a is provided on the inner surface of the first top surface partial panel 11a to extend from the vicinity of the contact portion with the left panel 14 to the vicinity of the second top surface hinge member 21e in a front view. A second auxiliary beam 83b is provided on the inner surface of the second top surface partial panel 11b to extend from the vicinity of the contact portion with the right panel 15 to the vicinity of the second top surface hinge member 21e in a front view. The hinge 84 is joined to each of the first auxiliary beam 83a and the second auxiliary beam 83b.

As the auxiliary beam 83, various materials such as metal, resin, carbon, etc. can be used as those having strength enough to prevent the top panel 11E from bending. It is possible to take various shapes such as material. The auxiliary beam 83 may extend with a continuous width along the X direction, or may be provided with a plurality of narrow widths spaced apart from each other along the X direction. Also, the hinge 84 may be provided at only one location, or a plurality of hinges may be provided along the X direction.

As shown in FIG. 13(b), when the top panel 11E is in the assembled state, the first auxiliary beam 83a is provided on the inner surface of the lower side of the first top partial panel 11a, and the second top partial panel A second auxiliary beam 83b is provided on the inner surface of the lower side of 11b. It joins with each of the auxiliary beams 83b. The +Y direction end face of the first top panel 11a and the −Y direction end face of the second top panel 11b abut on the upper side of the hinge 84 that constitutes the second top hinge member 21e. . In addition, the +Y-direction end face of the first auxiliary beam 83a and the −Y-direction end face of the second auxiliary beam 83b abut on the upper side of the hinge 84 .

Here, when the top panel 11E receives a force that tends to bend downward due to the load of the heat storage material, etc., the first top partial panel 11a moves toward the left panel around the first top hinge member 21c. 14, and the second top panel 11b rotates clockwise with respect to the first top panel 11a when viewed from the front, centering on the second top hinge member 21e. Attempts to transform in the direction of counterclockwise rotation. At this time, since the hinge 84 joins the first auxiliary beam 83a and the second auxiliary beam 83b, the contact surface between the first auxiliary beam 83a and the second auxiliary beam 83b along the XZ plane is They are compressed by each other.

When the first auxiliary beam 83a and the second auxiliary beam 83b are not in contact with each other, the contact surfaces of the first top panel 11a and the second top panel 11b along the XZ plane are The upper portions of the end surfaces of the first top panel 11a and the second top panel 11b are elastically deformed, and the top panel 11E bends downward.

However, in this modification, since the first auxiliary beam 83a and the second auxiliary beam 83b are in contact with each other, the elastic deformation of the first top surface partial panel 11a and the second top surface partial panel 11b is reduced, and the top surface panel 11E can be suppressed from bending downward.

Further, as shown in FIG. 13(c), when folding the top panel 11E, the second top panel 11b is lifted slightly upward, and the first top panel 11a is folded into the first top hinge member 21c. and rotate the second top panel 11b clockwise with respect to the first top panel 11a via the second top hinge member 21e. rotate to Thereby, the top panel 11E can be easily folded like the panel container 30 of the first embodiment.

In this modified example, the contact between the first auxiliary beam 83a and the second auxiliary beam 83b causes the first top panel 11a and the second top panel 11b to bend downward. is suppressed, but not limited to such a structure, for example, as shown in FIG. The hinge 84 itself may have a rotation angle limiting mechanism so that it cannot rotate counterclockwise with respect to 11a. In this case, in the assembled state of the top panel 11E, the first auxiliary beam 83a and the second auxiliary beam 83b may be separated from each other instead of being in contact with each other.

(d) Modification 4
FIG. 14 is a front view partially showing a panel container 30E of Modification 4 similar to Modification 3 of the present embodiment. As shown in FIG. 14(a), the top panel 11F of the panel container 30E is provided with auxiliary beams and hinges in the same manner as in Modification 3, but the auxiliary beams are provided at three locations instead of two, and the hinge is not provided at one location. It has become a configuration that has increased to two places without. FIG. 14(a) shows a state in which the top panel 11F is assembled. and a second top partial panel 11b arranged between the first top partial panel 11a and the third top partial panel 11c.

The first top surface partial panel 11a is foldably attached to the left panel 14 via a first top surface hinge member 21c. The second top surface portion panel 11b is foldably attached to the first top surface portion panel 11a via a second top surface hinge member 21e. Further, the third top surface partial panel 11c is foldably attached to the second top surface partial panel 11b via a third top surface hinge member 21f.

The second top surface hinge member 21e of the top surface panel 11F is configured by a hinge 84 provided on the inner surface of the top surface panel 11F. Further, the third top surface hinge member 21f of the top surface panel 11F is configured by a hinge 85 provided on the inner surface of the top surface panel 11F.

An auxiliary beam 83 is provided on the inner surface of the top panel 11F and extends from the vicinity of the contact portion with the left panel 14 to the vicinity of the contact portion with the right panel 15 in a front view. The auxiliary beam 83 is composed of a first auxiliary beam 83a, a second auxiliary beam 83b and a third auxiliary beam 83c. A first auxiliary beam 83a is provided on the inner surface of the first top surface partial panel 11a to extend from the vicinity of the contact portion with the left panel 14 to the vicinity of the second top surface hinge member 21e in a front view. A second auxiliary beam 83b is provided on the inner surface of the second top panel 11b and extends from the vicinity of the contact portion with the first top panel 11a to the vicinity of the contact portion with the third top panel 11c in front view. is provided. A third auxiliary beam 83c extending from the vicinity of the third top hinge member 21f to the vicinity of the contact portion with the right panel 15 in a front view is provided on the inner surface of the third top panel 11c.

The hinge 84 is joined to each of the first auxiliary beam 83a and the second auxiliary beam 83b, and the hinge 85 is joined to each of the second auxiliary beam 83b and the third auxiliary beam 83c.

The +Y direction end face of the first top panel portion 11a and the -Y direction end face of the second top portion panel 11b abut on the upper side of the hinge 84 that constitutes the second top hinge member 21e. The +Y direction end face of the second top panel 11b and the −Y direction end face of the third top panel 11c are above the hinge 85 that constitutes the third top hinge member 21f. are in contact with each other. In addition, the end surface of the first auxiliary beam 83a on the +Y direction side and the end surface of the second auxiliary beam 83b on the -Y direction side are in contact with each other on the upper side of the hinge 84, and the +Y direction side of the second auxiliary beam 83b. and the -Y direction side end face of the third auxiliary beam 83 c are in contact with each other on the upper side of the hinge 85 .

Here, when the top panel 11F receives a force to bend downward due to the load of the heat storage material or the like, the first top partial panel 11a moves toward the left panel around the first top hinge member 21c. 14 when viewed from the front, and the third top panel 11c rotates around the third top hinge member 21f with respect to the second top panel 11b when viewed from the front. Attempts to transform in the direction of counterclockwise rotation. At this time, since the hinge 84 joins the first auxiliary beam 83a and the second auxiliary beam 83b, and the hinge 85 joins the second auxiliary beam 83b and the third auxiliary beam 83c, the first auxiliary beam The second auxiliary beam 83a and the second auxiliary beam 83b are mutually compressed via their contact surfaces along the XZ plane, and the second auxiliary beam 83b and the third auxiliary beam 83c are compressed along the XZ plane. They are compressed to each other via their contact surfaces.

Therefore, as in Modification 3, the first auxiliary beam 83a and the second auxiliary beam 83b are in contact with each other, and the second auxiliary beam 83b and the third auxiliary beam 83c are in contact with each other. Elastic deformation of partial panel 11a, second top partial panel 11b, and third top partial panel 11c can be reduced, and downward bending of top panel 11F can be suppressed.

Further, as shown in FIG. 14(b), when folding the top panel 11F, the third top panel 11c is lifted slightly upward, and the first top panel 11a is folded into the first top hinge member 21c. and rotate the third top panel 11c clockwise with respect to the first top panel 11a via the third top hinge member 21f. rotate to Thereby, the top panel 11F can be easily folded like the panel container 30 of 1st Embodiment.

If the auxiliary beams and hinges are not used, that is, in a structure similar to that of the first embodiment, it is difficult in terms of strength to divide the top panel 11 into three or more sections. However, as in this modified example, if a structure is used in which auxiliary beams and hinges are appropriately used, the deflection of the panel and the strength of the hinges that connect the partial panels are increased and deformation is suppressed, so the top panel is divided into three parts. It is possible to divide the panel container into the above, and the degree of freedom in designing the structure of the panel container can be expanded.

(e) Modification 5
FIG. 15 is a front view partially showing a panel container 30F of Modification 5 of the present embodiment. FIG. 15(a) is a diagram in which the top panel 11G of the panel container 30F is in an assembled state. FIG. 15(b) is an enlarged view of the portion C showing the vicinity of the contact portion between the top panel 11G and the left panel 14 in FIG. 15(a). FIG. 15(c) is an explanatory view of the part shown in FIG. 15(b), showing that the top panel 11G is going to be folded. As shown in FIG. 15(a), the top panel 11G of the panel container 30F is provided with auxiliary beams 86 on the outer surface of the top panel 11G, unlike the third and fourth modifications, and the first top partial panel. A pair of reverse folding prevention pieces 87 that contact each other are provided on the upper outer surface of the contact portion with the second top panel.

The auxiliary beams 86 are separated into first auxiliary beams 86a provided on the outer surface of the first top panel 11a and second auxiliary beams 86b provided on the outer surface of the second top panel 11b. The reverse folding prevention piece 87 includes a first reverse folding prevention piece 87a provided on the outer surface of the first top panel 11a and a second reverse folding prevention piece 87a provided on the outer surface of the second top panel 11b. 87b and are arranged separately.

As the reverse folding prevention piece 87, various materials such as metal, resin, or carbon can be used as those having strength enough to prevent the top panel 11G from bending downward. The cross-sectional shape cut along the YZ plane is not limited to a semicircular shape as exemplified in the modified examples, and may be any shape such as a triangle, a quadrangle, a polygon, or a shape surrounded by curved surfaces. The reverse folding prevention piece 87 may extend with a continuous width along the X direction, or may be provided with a plurality of narrow width pieces spaced apart from each other along the X direction.

As shown in FIG. 15(b), when the top panel 11G is in the assembled state, the first auxiliary beam 86a is provided on the outer surface of the upper side of the first top partial panel 11a, and the second top surface A second auxiliary beam 86b is provided on the upper outer surface of the partial panel 11b. A first reverse folding prevention piece 87a is provided on the outer surface of the first auxiliary beam 86a on the +Y direction side, and a second reverse folding prevention piece is provided on the outer surface of the second auxiliary beam 86b on the -Y direction side. 87b is provided, and the first reverse folding prevention piece 87a and the second reverse folding prevention piece 87b are in contact with each other. However, the first reverse folding prevention piece 87a and the second reverse folding prevention piece 87b do not necessarily have to be joined to the first auxiliary beam 86a and the second auxiliary beam 86b, respectively. A configuration in which the second auxiliary beam 86b is not arranged may be adopted.

When the top panel 11G receives a downward bending force, the first top partial panel 11a rotates clockwise with respect to the left panel 14 around the first top hinge member 21c when viewed from the front. The second top surface partial panel 11b is deformed in a direction rotating counterclockwise in a front view with respect to the first top surface partial panel 11a around the second top surface hinge member 21e. try to. At this time, the first reverse folding prevention piece 87a and the second reverse folding prevention piece 87b of the pair of reverse folding prevention pieces 87 that are in contact with each other are pressed against each other. Therefore, it is possible to reduce the mutual compression of the first top surface partial panel 11a and the second top surface partial panel 11b via their contact surfaces along the XZ plane. As a result, the upper portions of the end surfaces of the first top panel 11a and the second top panel 11b are elastically deformed, effectively suppressing downward bending of the top panel 11G.

Further, as shown in FIG. 15(c), when folding the top panel 11G, the second top panel 11b is lifted slightly upward, and the first top panel 11a is folded into the first top hinge member 21c. and rotate the second top panel 11b clockwise with respect to the first top panel 11a via the second top hinge member 21g. rotate to The first reverse folding prevention piece 87a and the second reverse folding prevention piece 87b, which constitute the pair of reverse folding prevention pieces 87, are separated from each other when the top panel 11G begins to shift from the assembled state to the folded state even a little. The abutment relationship is canceled. Therefore, when folding the top panel 11G, there is no fear that the reverse folding prevention piece 87 will hinder the work, and the top panel 11G can be easily folded like the panel container 30 of the first embodiment.

10 Carriages for transportation 11, 11D, 11E, 11F, 11G Top panel 11a First top partial panel 11b Second top partial panel 11c Third top partial panel 12 Front panel 12a First front partial panel 12b Second front Partial panel 12c Third front partial panel 13 Rear panel 13a First rear partial panel 13b Second rear partial panel 14 Left panels 15, 15A Right panel 16 Bottom panel 17 Side panel 20 Storage space 21c First top hinge members 21d, 21e , 21f, 21g Second top hinge member 22a First front hinge member 22b Second front hinge member 22c Third front hinge member 23a First back hinge member 30, 30A, 30B, 30C, 30D, 30E, 30F Panel container 32 Detachable members 31a, 31b Detachable members 33a, 33b Detachable members 34a, 34b Detachable members 35, 36 Detachable member 39 Hook-and-loop fastener 40 Thermal insulation part 41 Vacuum insulation material 41a Core material 41b Exterior material 42 Foam insulation material 43 Thermal insulation surrounding part 44 Thermal insulation material Protective member 45 Heat shield sheet 50 Bogie body 51 First side frames 52, 52A Second side frame 53 Connecting member 54 Central connecting struts 55, 55a, 55b Strut 56 Horizontal beam 57 Central frame 58 Bottom plate 61 First wheel 62 Second wheel 63 3rd wheel 64 4th wheel 65 5th wheel 66 6th wheel 67 1st wheel mounting frame 68 2nd wheel mounting frame 69 3rd wheel mounting frame 70 heat storage material storage section 81 falling prevention piece 82 guide section 83, 86 auxiliary Beams 83a, 86a First auxiliary beams 83b, 86b Second auxiliary beam 83c Third auxiliary beams 84, 85 Hinge 87 Reverse folding prevention piece 87a First reverse folding prevention piece 87b Second reverse folding prevention piece

Claims (9)

a first side frame, a second side frame, a connecting member that connects the first side frame and the second side frame, and a bottom plate that is rotatably attached to the connecting member. A panel container attached to a carriage body having
a plurality of side panels adjacent to each other;
a first hinge portion provided on the side panel;
a top panel that is bendably connected to the side panel via the first hinge,
the top panel includes a first partial panel connected to the side panel via the first hinge;
a second hinge portion provided on the first partial panel;
a second partial panel bendably connected to the first partial panel via the second hinge,
The first hinge portion is provided along the outer surface of the side panel, and the second hinge portion is provided along the inner surface of the top panel ,
It also has a bottom panel,
The bottom panel can be in a folded state adjacent to one of the first side frame and the second side frame,
A panel container , wherein the bottom plate is foldable to a position adjacent to either side frame . 2. The top panel according to claim 1, wherein the top panel is provided with a guide portion projecting to the outer surface of the side panel where the first hinge portion is not provided when the top panel is closed. panel container. When the side panels that are not provided with the first hinge portion and do not contact each other are the first side panel and the second side panel,
a first engaging member that detachably engages the second partial panel and the first side panel;
3. The panel container according to claim 1, further comprising a second engaging member that detachably engages the second partial panel and the second side panel. 4. The panel container according to claim 3, wherein the main surface of the first side panel or the main surface of the second side panel and the end surface of the second partial panel are in contact. The top panel includes a first auxiliary beam arranged on the inner surface of the first partial panel;
a second auxiliary beam disposed on the inner surface of the second partial panel;
The second hinge portion is configured by a hinge provided on the inner surface of the top panel, and the hinge is joined to each of the first auxiliary beam and the second auxiliary beam. A panel container according to any one of claims 1 to 4. A pair of reverse folding prevention pieces are provided on the respective outer surfaces of the first partial panel and the second partial panel of the top panel so as to abut against each other only when the top panel is closed. 6. A panel container according to any one of claims 1 to 5, wherein the container comprises: The side panel, which is not provided with the first hinge portion, is provided with a fall prevention piece that abuts against the inner surface of the top panel when the top panel is closed. Item 7. The panel container according to any one of Item 6. A carriage for transportation, comprising: a panel container according to any one of claims 1 to 7, attached to the carriage body. 9. The carriage for transportation according to claim 8, wherein the second side frame is provided with a fall prevention piece that abuts against the inner surface of the top panel when the top panel is closed.

Images