JP6917064B2 - Thermal insulation structure - Google Patents

Description

The present invention relates to a heat insulating structure.

When carrying an object that requires cold storage, such as a cake or a Western confectionery, a cold storage container or a cold storage box may be used (see, for example, Patent Document 1).

The wrapping paper box disclosed in Patent Document 1 is provided with a pocket portion for storing a cold insulating material or the like on the outside of the top wall or side wall of the box body, and the inside of the box body and the pocket portion are provided on the top wall or side wall provided with the pocket portion. It is characterized in that one or a plurality of air flow holes communicating with the air flow holes are provided.

JP-A-2009-196669

It is desirable that the cool box that stores cakes and the like can be stored in as small a storage space as possible when not in use. Further, from the viewpoint of manufacturing cost, it is desirable that the manufacturing process can be simplified as much as possible. Furthermore, it is desirable that the heat insulating performance is as high as possible. With the technique disclosed in Patent Document 1, it is difficult to deal with such a case.

An object of the present invention is to provide a heat insulating structure capable of efficient storage, improvement of heat insulating property, and reduction of manufacturing cost.

The heat insulating structure according to the present invention includes a plate-shaped heat insulating member and a coating layer arranged on one surface of the heat insulating member in the plate thickness direction, and can be bent into a box shape including a bottom plate and a side plate. The outer side of the heat insulating structure, which is a region corresponding to the bottom plate and is connected by a coating layer at the first boundary portion which is a region corresponding to the side plate and is a boundary portion between the bottom plate constituent regions. The plate constituent area is connected to the outer plate constituent region by a covering layer at a second boundary portion different from the first boundary portion in the outer plate constituent region, and when bent at the second boundary portion, the outer plate constituent region becomes the outer plate constituent region. On the other hand, it includes an inner plate constituent area arranged so as to overlap the inside of the box, a side plate constituent region including the inner plate constituent region, and a holding portion for holding an arranged state in which the inner plate constituent region is overlapped with the outer plate constituent region.

According to the heat insulating structure having such a structure, the outer plate constituent region is bent at the first boundary portion and the inner plate constituent region is bent at the second boundary portion, so that the box including the bottom plate and the side plate can be easily bent. It can be shaped. When not in use, a plurality of sheets can be stacked in a thin plate shape, and efficient storage can be achieved without being bulky. Since the side plate in which the outer plate constituent area and the inner plate constituent area are overlapped is composed of a plurality of plate-shaped members, the heat insulating property of the box can be improved. Since the inner plate constituent area is held in an arranged state in which it is overlapped by the holding portion, it is possible to avoid interference between the object accommodated in the internal space of the box and the side plate. Such a heat insulating structure is punched out in the plate thickness direction by a member having a blade so as to cut off the entire outer shape of the heat insulating structure while leaving a coating layer for the first boundary portion and the second boundary portion. Can be manufactured. Therefore, the manufacturing process can be simplified and the manufacturing cost can be reduced. As a result, such a heat-retaining structure can be efficiently stored and can be improved in heat insulating property, and the manufacturing cost can be reduced.

In the heat retaining structure, the holding portion may be provided in the inner plate constituent region and may include a protrusion that protrudes in a direction perpendicular to the plate thickness direction and a receiving recess that receives the protrusion. .. With such a configuration, the movement of the inner plate constituent region in the bending direction can be restricted by fitting the protrusion into the receiving recess.

The heat insulating structure is connected to the outer plate constituent area by a coating layer at a third boundary portion different from the second boundary portion in the outer plate constituent region, and when bent at the third boundary portion, the box An internal space arrangement area for partitioning the internal space may be included, and a partition constituent area for partitioning the internal space of the box may be further provided. With such a configuration, it is possible to form a plurality of regions partitioned by the internal space arrangement region inside the box when the box is bent at the third boundary portion. Therefore, it is possible to put an object in each of a plurality of partitioned spaces. Further, since it is integrally manufactured as a heat insulating structure, smooth assembly is facilitated.

In the heat insulating structure, a through hole penetrating in the thickness direction may be formed in the internal space arrangement region. With such a configuration, for example, in the partitioned internal space, the area where the object requiring cold insulation is arranged and the area where the ice pack is arranged are arranged apart from each other, and the cold air emitted from the ice pack is generated. , Can be sent to a space where objects that require cold storage are housed.

The heat insulating structure may further include a partition state maintaining portion for maintaining a state in which the internal space arrangement area partitions the space inside the box. With such a configuration, it is possible to more reliably maintain the state partitioned by the internal space arrangement area by the partition state maintaining unit. Therefore, it is possible to prevent the volume of each partitioned space from changing.

The heat insulating structure is further provided with an upright state maintaining portion that maintains the outer plate constituent area in an upright state with respect to the bottom plate constituent region when the outer plate constituent region is bent at the first boundary portion. You may. With such a configuration, the outer plate constituent region can be maintained in a state of being bent and erected at the first boundary portion. Therefore, for example, when an object is accommodated in the internal space of the box, a state in which a part of the side plate is erected can be appropriately maintained. Therefore, for example, an object to be accommodated in the internal space of the box can be smoothly accommodated.

In the heat insulating structure, the box has a rectangular parallelepiped shape and includes a top plate arranged at a position facing the bottom plate, and the heat insulating structure further includes a top plate constituent area which is a region corresponding to the top plate. , The bottom plate constituent area is assigned in a rectangular shape when viewed in a plane from the plate thickness direction, and the outer plate constituent regions are the first outer plate constituent region, the second outer plate constituent region, and the third outer plate constituent region. The outer plate constituent area and the fourth outer plate constituent region are included, and are connected by a coating layer in the portion corresponding to each side of the bottom plate constituent region, and the inner plate constituent region is the first outer side. It is connected by a coating layer at the second boundary portion of at least one of the plate constituent area, the second outer plate constituent region, the third outer plate constituent region, and the fourth outer plate constituent region. You may do so. With such a configuration, when the heat insulating structure is bent into a rectangular parallelepiped-shaped box, a sufficient space for accommodating an object can be formed inside.

In the heat-retaining structure, the outer plate constituent area is the first of each of the first outer plate constituent region, the second outer plate constituent region, the third outer plate constituent region, and the fourth outer plate constituent region. When bent at the boundary portion, the first outer plate constituent area and the third outer plate constituent region face each other, and the second outer plate constituent region and the fourth outer plate constituent region face each other. When arranged, the inner plate constituent area is connected to the first outer plate constituent region by a coating layer at the second boundary portion of the first outer plate constituent region and is bent at the second boundary portion. A third outer plate configuration at a second boundary portion between a first inner plate constituent region arranged so as to overlap the inner side of the box with respect to the first outer plate constituent region and a third outer plate constituent region. A third inner plate constituent region, which is connected to the region by a coating layer and is arranged so as to overlap the inner side of the box with respect to the third outer plate constituent region when folded at the second boundary portion, is included. May be good. With such a configuration, it is possible to arrange the outer plate constituent region and the inner plate constituent region so as to overlap each other on at least two side plates. Therefore, the heat insulating property of the box can be further improved.

In the heat-retaining structure, the outer plate constituent region is the first of each of the first outer plate constituent region, the second outer plate constituent region, the third outer plate constituent region, and the fourth outer plate constituent region. When bent at the boundary portion, the first outer plate constituent area and the third outer plate constituent region face each other, and the second outer plate constituent region and the fourth outer plate constituent region face each other. Have been placed. The inner plate constituent area is connected to the first outer plate constituent region by a coating layer at the second boundary portion of the first outer plate constituent region, and the fourth outer plate is formed when bent at the second boundary portion. At the second boundary portion between the second inner plate constituent region arranged so as to overlap the constituent regions inside the box and the third outer plate constituent region, the third outer plate constituent region and the covering layer Includes a fourth inner plate constituent area that is connected and arranged to overlap the inner side of the box with respect to the fourth outer plate constituent region when folded at the second boundary portion. The upright state maintaining portion is formed in the second inner plate constituent area and the third inner plate constituent region, and by fitting, the first outer plate constituent region and the third outer plate constituent region are formed as a bottom plate. The concave-convex structure includes a concave-convex structure that maintains an upright state with respect to the region, and the concave-convex structure overlaps the first inner plate constituent region and the second inner plate constituent region with the fourth outer plate constituent region by fitting. It also serves as a holding unit for holding the arranged state. By fitting the uneven structure, the first outer plate constituent region and the third outer plate constituent region can maintain a constant shape standing upright with respect to the bottom plate constituent region, and the second inner plate constituent region can be maintained. And the arrangement state in which the fourth inner plate constituent region is overlapped with the fourth outer plate constituent region can be maintained. Therefore, it is possible to smoothly accommodate the object to be accommodated in the internal space of the box while maintaining the state in which a part of the side plate is erected. In addition, it is possible to improve the heat insulating property of the box while preventing interference between the object housed in the internal space of the box and the side plate.

In the heat retaining structure, the concave-convex structure is formed in any one of the second inner plate constituent region and the fourth inner plate constituent region, and projects in the direction perpendicular to the plate thickness direction. It may include a fitting portion to be fitted and a fitting recess for receiving the fitting portion. With such a configuration, by fitting the fitting portion into the fitting recess, it is possible to restrict the movement of the second inner plate constituent region and the fourth inner plate constituent region in the bending direction.

According to such a heat-retaining structure, it is possible to provide a heat-retaining structure capable of efficient storage, improvement of heat insulating property, and reduction of manufacturing cost.

It is a schematic plan view which shows the heat insulation structure which concerns on one Embodiment of this invention. It is a schematic plan view which shows the heat insulation structure when the heat insulation structure shown in FIG. 1 is seen from the back surface side. It is a schematic cross-sectional view of a part of a heat insulation structure. It is a perspective view of a heat insulation box. It is a front view of a heat insulation box. It is a rear view of a heat insulation box. It is a left side view of a heat insulation box. It is a right side view of a heat insulation box. It is a top view of a heat insulation box. It is a bottom view of a heat insulation box. It is a schematic plan view which shows the 1st inner plate constituent area and the 2nd inner plate constituent area. It is a schematic plan view which shows the 3rd inner plate constituent area and the 4th inner plate constituent area. It is a flowchart which shows the process at the time of assembling the heat insulation structure into a heat insulation box. It is a perspective view which shows the intermediate body in the state which the 1st inner plate constituent area and the 3rd inner plate constituent area of a heat-retaining structure are bent. It is a perspective view which shows the intermediate in the state which the 1st outer plate constituent area and the 3rd outer plate constituent area are erected. It is a perspective view which shows the intermediate in the state which the 2nd inner plate constituent area and the 4th inner plate constituent area are bent. It is a perspective view which shows the intermediate body in the state which the internal space arrangement area is bent. It is a perspective view which shows an example of the folded state for storing a heat insulation structure. It is a perspective view which shows the state which the door part is open.

Next, the configuration of the heat insulating structure according to the embodiment of the present invention will be described. In the following drawings, the same or corresponding parts are given the same reference number and the explanation is not repeated. FIG. 1 is a schematic plan view showing a heat insulating structure according to an embodiment of the present invention. FIG. 2 is a schematic plan view showing the heat insulating structure when the heat insulating structure shown in FIG. 1 is viewed from the back surface side. FIG. 2 is a view when the heat insulating structure is viewed from a direction opposite to the direction of the arrow indicating the Z-axis direction of FIG.

With reference to FIGS. 1 and 2, the heat insulating structure 2 is a plate-shaped member. A single heat insulating structure 2 having a predetermined thickness is bent into a box shape to form a heat insulating box described later. That is, the heat insulating structure 2 is a structure in a state before being assembled by bending it into a heat insulating box that keeps the temperature of the internal space constant. In FIGS. 1 and 2, the Z-axis direction is the plate thickness direction of the heat insulating structure 2. The configuration of the heat retaining structure 2 will be described later.

FIG. 3 is a schematic cross-sectional view of a part of the heat insulating structure 2. With reference to FIG. 3, the heat insulating structure 2 includes a plate-shaped heat insulating member 41, a first covering layer 42, and a second covering layer 43. The heat insulating member 41 includes a first surface 411, which is one surface in the Z-axis direction, and a second surface 412, which is the other surface in the Z-axis direction. The first covering layer 42 is arranged so as to cover the first surface 411 of the heat insulating member 41. The second covering layer 43 is arranged so as to cover the second surface 412 of the heat insulating member 41. In the present embodiment, the heat insulating member 41 is a foamed member, and for example, the material of the foamed member is expanded polystyrene resin. In the present embodiment, the first coating layer 42 and the second coating layer 43 are paper, for example, kraft paper, coated paper, or the like. The first coating layer 42 and the second coating layer 43 are bonded to the heat insulating member 41 with an adhesive or the like. In this embodiment, the thickness S ₁ in the Z-axis direction of the heat insulating structure 2, for example, 5 mm. From the viewpoint of easy understanding, the thicknesses of the first coating layer 42 and the second coating layer 43 are exaggerated and shown thick.

The heat insulating structure 2 has a single laminated member including a heat insulating member 41, a first coating layer 42, and a second coating layer 43 in the direction of an arrow indicating the Z-axis direction by a member having a blade. Manufactured by punching. The portion corresponding to the outer shape of the heat insulating structure 2 is formed by punching out the entire heat insulating member 41, the first coating layer 42, and the second coating layer 43. For the portion where the heat insulating structure 2 is bent, for example, a member having a blade is pressed from the surface 413 side exposed to the outside of the first coating layer 42, leaving the second coating layer 43 and the first coating layer. It is formed by cutting the 42 and the heat insulating member 41. The cut portion at this time is indicated by the break portion T. The portion corresponding to the outer shape of the heat insulating structure 2 and the portion to be bent may be punched at the same time or separately. In addition, in FIG. 1 and FIG. 2, from the viewpoint of easy understanding, the portion connected only by the second coating layer 43 is shown by a broken line.

FIG. 4 is a perspective view of a heat insulating box in which the heat insulating structure 2 is bent into a box shape. FIG. 5 is a front view of the heat insulating box. FIG. 5 is a view when the heat insulating box is viewed from the direction of the arrow indicating the Y-axis direction of FIG. FIG. 6 is a rear view of the heat insulating box. FIG. 6 is a view when the heat insulating box is viewed from the direction opposite to the direction of the arrow indicating the Y-axis direction of FIG. FIG. 7 is a left side view of the heat insulating box. FIG. 7 is a view when the heat insulating box is viewed from the direction of the arrow indicating the X-axis direction of FIG. FIG. 8 is a right side view of the heat insulating box. FIG. 8 is a view when the heat insulating box is viewed from a direction opposite to the direction of the arrow indicating the X-axis direction of FIG. FIG. 9 is a plan view of the heat insulating box. FIG. 9 is a view when the heat insulating box is viewed from a direction opposite to the direction of the arrow indicating the Z-axis direction of FIG. FIG. 10 is a bottom view of the heat insulating box. FIG. 10 is a view when the heat insulating box is viewed from the direction of the arrow indicating the Z-axis direction of FIG. 4 to 10 show a state in which the heat insulating structure 2 which is a plate-shaped member is bent into a box shape to form a heat insulating box. Note that FIGS. 1 and 2 correspond to development views when the heat insulating box 1 is unfolded in a plate shape.

With reference to FIGS. 4 to 10, the heat insulating box 1 is formed by bending a single heat insulating structure 2 having a predetermined thickness. The heat insulating box 1 has a rectangular parallelepiped shape after being assembled. The heat insulating box 1 can accommodate an object that requires heat retention in the space inside the heat insulating box 1. In the present embodiment, the space inside the heat insulating box 1 can accommodate an object for cold insulation, for example, a cake or a Western confectionery.

The heat insulating box 1 includes a flat side plate 10, a bottom plate 11, and a top plate 16, respectively. The side plate 10 includes a first side plate 12, a second side plate 13, a third side plate 14, and a fourth side plate 15. The first side plate 12 and the third side plate 14 form a pair and are arranged in parallel with an interval in the X-axis direction. The second side plate 13 and the fourth side plate 15 form a pair and are arranged in parallel with an interval in the Y-axis direction. The bottom plate 11 and the top plate 16 are arranged in parallel with a space in the Z-axis direction. _{In the present embodiment, the horizontal length M 1} shown in the Y-axis direction of the heat insulating box 1 is, for example, 235 mm, and the vertical length M ₂ shown in the X-axis direction is, for example, 210 mm, in the Z-axis direction. _{The length M 3} in the height direction shown is, for example, 115 mm.

Next, the configuration of the heat insulating structure 2 will be described. Again, referring to FIGS. 1 and 2, the heat insulating structure 2 has a bottom plate constituent area 21 which is a region corresponding to the bottom plate 11, a side plate constituent region 22 which is a region corresponding to the side plate 10, and a top plate 16. It includes a top plate constituent area 23, which is a corresponding region, and a partition constituent region 28 for partitioning the internal space of the heat insulating box 1.

The bottom plate constituent area 21 has a rectangular shape when viewed in a plane from the Z-axis direction. That is, the bottom plate constituent region 21 has four linear sides 211, 212, 213, and 214, respectively. The first side 211 and the third side 213 are paired and arranged in parallel with an interval in the X-axis direction. The second side 212 and the fourth side 214 form a pair and are arranged in parallel with an interval in the Y-axis direction. _{The length L 1} of the second side 212 and the fourth side 214 in the Y-axis direction is _{shorter than the length M 1} by twice the length of the thickness S _1. In this embodiment, the length L ₁ is, for example, 225 mm. _{The length L 2} of the first side 211 and the third side 213 in the X-axis direction is _{shorter than the length M 2} by twice the length of the thickness S _1. In this embodiment, the length L ₂ is, for example, 200 mm.

The side plate constituent area 22 includes an outer plate constituent region 24 exposed to the outside of the heat insulating box 1 and an inner plate constituent region 25 arranged inside the heat insulating box 1. The outer plate constituent region 24 includes a first outer plate constituent region 241, a second outer plate constituent region 242, a third outer plate constituent region 243, and a fourth outer plate constituent region 244. The first outer plate constituent area 241 is bent to form a part of the first side plate 12. The second outer plate constituent area 242 is bent to form the second side plate 13. The third outer plate constituent area 243 is bent to form a part of the third side plate 14. The fourth outer plate constituent area 244 is bent to form a part of the fourth side plate 15. The first outer plate constituent region 241 is a region corresponding to the first side 211, and in the first boundary portion 24A which is a boundary portion with the bottom plate constituent region 21, the bottom plate is formed only by the second covering layer 43. It is connected to the configuration area 21. That is, on the first side 211, the first coating layer 42 and the heat insulating member 41 are cut. Similarly, the second outer plate constituent area 242, the third outer plate constituent region 243, and the fourth outer plate constituent region 244 are the second side 212, the third side 213, and the fourth side 214, respectively. In the first boundary portion 24A, the region corresponding to the above is connected to the bottom plate constituent region 21 only by the second coating layer 43. With such a configuration, the first outer plate constituent regions 241 to the fourth outer plate constituent regions 244 are bent with the first boundary portion 24A as a fulcrum and the second coating layer 43 inside. Can be done.

The first outer plate constituent region 241 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. The end portion 241a on the side where the fourth outer plate constituent region 244 of the first outer plate constituent region 241 is located and the end on the side where the second outer plate constituent region 242 of the first outer plate constituent region 241 is located. _{The length L 3} in the Y-axis direction with the portion 241 b is shorter than the length L ₁ by the thickness S ₁ minute. The end portion 241c on the side where the bottom plate constituent region 21 of the first outer plate constituent region 241 is located and the end portion 241d located on the side opposite to the side where the bottom plate constituent region 21 of the first outer plate constituent region 241 is located. _{The length L 4} in the X-axis direction with and is shorter than the length M ₃ by the length of the thickness S _1. In the present embodiment, the length L ₄ is, for example, 110 mm. A protruding portion 51 projecting in the Y-axis direction is provided at the center of the end portion 241a in the X-axis direction. The protrusion 51 is composed of three orthogonal straight lines when viewed in a plane from the Z-axis direction. The protruding portion 51 is provided at a position having a _{length L 5 in} the X-axis direction from the end portion 241c on the side where the bottom plate constituent region 21 of the first outer plate constituent region 241 is located. The protruding portion 51 protrudes from the end portion 241a in the Y-axis direction by a length L _{7 minutes slightly longer than the thickness S 1.} A protruding portion 52 projecting in the Y-axis direction is provided at the center of the end portion 241b in the X-axis direction. When viewed in a plane from the Z-axis direction, the protrusion 52 is composed of three orthogonal straight lines. The protruding portion 52 is provided at a position having a _{length L 10 in} the X-axis direction from the end portion 241c. In this embodiment, the length L ₁₀ is the same as the length L _5. The length L ₁₁ of the protruding portion 52 in the X-axis direction is the same _{as the length L 6 of the protruding portion 51 in the X-axis direction.} The protruding portion 52 protrudes from the end portion 241b in the Y-axis direction by a thickness S of ₁ minute. The shape of the corners where the straight lines intersect may be curved. A recess 54 recessed in the X-axis direction is formed on the end portion 241d side so as to be located on the side closer to the end portion 241a. The recess 54 is recessed in the X-axis direction by a _{thickness S of 1 from the end 241d. In the present embodiment, the length L 9} of the bottom portion 541 that defines the recess 54 in the Y-axis direction is, for example, 22 mm.

The second outer plate constituent area 242 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. And the side of the end portion 242a of the bottom plate structure region 21 of the second outer plate configuration area 242 is located, Y-axis direction length L ₁₃ between the end portion 242b of the side opposite to the side where the bottom plate constituting region 21 is located in short thickness _{S 1} minute only than the length _{L 4.} The end 242c of the second outer plate constituent region 242 on the side where the first outer plate constituent region 241 is located and the end of the second outer plate constituent region 242 on the side where the third outer plate constituent region 243 is located. _{The length L 14} in the X-axis direction with the portion 242d is longer than the length L ₂ by twice the length of the thickness S _1. In the present embodiment, the length L ₁₄ is, for example, 210 mm. A recess 65 recessed in the X-axis direction is formed at the center of the end portion 242c in the Y-axis direction. The recess 65 is formed at a position having a _{length L 15 in} the Y-axis direction from the end portion 242a. _{In the present embodiment, the length L 16} of the bottom portion 651 that defines the recess 65 in the Y-axis direction is the same as the length L _11. The length L ₁₆ may be slightly longer than the length L _11. The recess 65 is recessed in the X-axis direction by a _{thickness S of 1 from the end 242c.} By doing so, when the second outer plate constituent region 242 is bent, the protrusion 52 formed in the first outer plate constituent region 241 can be fitted into the recess 65.

The shape of the third outer plate constituent region 243 is line-symmetric with the first outer plate constituent region 241 with reference to the reference line G shown in FIG. The third outer plate constituent area 243 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. A protrusion 71 projecting in the Y-axis direction is provided at the center of the end portion 243a on the side where the fourth outer plate constituent region 244 of the third outer plate constituent region 243 is located in the X-axis direction. A protrusion 72 projecting in the Y-axis direction is provided at the center of the end portion 243b on the side where the second outer plate constituent region 242 of the third outer plate constituent region 243 is located in the X-axis direction. A concave portion recessed in the X-axis direction so as to be located on the end portion 243d side located on the side opposite to the side where the bottom plate constituent region 21 of the third outer plate constituent region 243 is located and closer to the end portion 241a. 74 is formed.

The fourth outer plate constituent area 244 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. _{In the present embodiment, the length L 2} between both ends of the fourth outer plate constituent region 244 in the X-axis direction is, for example, 200 mm. _{The length L 17 in} the Y-axis direction between the end portion 244a on the side where the bottom plate constituent region 21 of the fourth outer plate constituent region 244 is located and the end portion 244b on the side opposite to the side where the bottom plate constituent region 21 is located is , The thickness is S ₁ minute shorter than the length L _13. In the present embodiment, the length L ₁₇ is, for example, 100 mm.

The top plate constituent area 23 is a second outer plate constituent region having only the second covering layer 43 in the second boundary portion 24B which is a boundary portion between the top plate constituent region 23 and the second outer plate constituent region 242. It is connected to 242. With such a configuration, the top plate constituent region 23 can be bent at the second boundary portion 24B with the second coating layer 43 inside.

The top plate constituent area 23 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. The end portion 23a on the side where the second outer plate constituent region 242 of the top plate constituent region 23 is located and the end portion 23b on the side opposite to the side where the second outer plate constituent region 242 of the top plate constituent region 23 is located are located. _{The length L 18} in the Y-axis direction with and is longer than the length L ₁ by the thickness S ₁ minute. In this embodiment, the length L ₁₈ is, for example, 230 mm. _{The length L 2} between both ends of the top plate constituent area 23 in the X-axis direction is, for example, 200 mm. A pair of projecting portions 231 and 232 projecting in the X-axis direction are formed on both ends of the top plate constituent area 23 in the X-axis direction. The protruding portions 231 and 232 are provided so as to be connected to the end portions 23b. The protrusions 231 and 232 are composed of three orthogonal straight lines when viewed in a plane from the Z-axis direction. _{The length L 19} of the protrusions 231 and 232 in the Y-axis direction is longer than the length L ₉ by twice the length of the thickness S _1. Protrusions 231 and 232 protrude thickness _{S 1} minute only from both ends of the X-axis direction in the X-axis direction, respectively. By doing so, when the top plate constituent region 23 is bent at the end portion 23a, the protruding portions 231 and 232 of the top plate constituent region 23 are the recess 54 of the first outer plate constituent region 241 and the second portion, respectively. It can be fitted into the recess 74 of the third outer plate constituent area 243.

The partition configuration area 28 includes an internal space arrangement area 27 arranged in the internal space of the heat insulating box 1, and a connection portion configuration area 26 connecting the fourth outer plate composition area 244 and the internal space arrangement area 27. The connection portion constituent area 26 has a rectangular shape when viewed in a plane from the Z-axis direction. In the present embodiment, the length of the end portion 26b on the side where the fourth outer plate constituent region 244 of the connecting portion constituent region 26 is located and the end portion 26a on the side where the internal space arrangement region 27 is located are long in the Y-axis direction. The L ₂₀ is, for example, 30 mm. The connection portion constituent region 26 is a third boundary portion 24C which is a boundary portion between the fourth outer plate constituent region 244 and the connection portion constituent region 26, and the fourth outer plate constituent region 26 is composed of only the second covering layer 43. It is connected to 244. Therefore, the connection portion constituent region 26 can be bent at the third boundary portion 24C with the second coating layer 43 inside. At the end portion 26a, the interior space arrangement region 27 is connected to the connection portion constituent region 26 only by the second covering layer 43. Therefore, the internal space arrangement region 27 can be bent at the end portion 26a with the second covering layer 43 inside.

When viewed in a plane from the Z-axis direction, the outer shape of the internal space arrangement region 27 is substantially rectangular. In the present embodiment, the Y-axis direction of the end portion 27a on the side opposite to the side where the connection portion constituent region 26 of the internal space arrangement region 27 is located and the end portion 27b on the side where the connection portion constituent region 26 is located. The length L _{21 of} is the same as the length L _17. The length L ₂₁ may be slightly shorter than the length L _17. The internal space arrangement region 27 is located on both end sides in the X-axis direction and is formed so as to be continuous with the connection portion constituent region 26. including. _{In the present embodiment, the length L 23} of the protrusions 276 and 277 in the X-axis direction is slightly longer than the thickness S _1. The length L ₂₃ may be the same length as the thickness S _{1. In the present embodiment, the length L 24} of the protrusions 276 and 277 in the Y-axis direction is, for example, 25 mm.

The internal space arrangement area 27 is a first portion 401 arranged on the end side where the connection portion constituent area 26 is located and a second portion 401 arranged on the side where the first outer plate constituent area 241 is located. The portion 402, the third portion 403 arranged on the end side opposite to the side where the connection portion constituent area 26 is located, and the third outer plate constituent area 243 are arranged on the side where the third outer plate constituent area 243 is located. Includes a fourth portion, 404, and. _{In the present embodiment, the length L 2} between both ends of the first portion 401 in the X-axis direction is, for example, 200 mm. In the internal space arrangement region 27, a through hole 272 is formed which is surrounded by the first portion 401, the second portion 402, the third portion 403, and the fourth portion 404 and penetrates in the Z-axis direction. Has been done. At the center of the second portion 402 in the Y-axis direction, a door portion 275 is provided which is arranged on the side where the through hole 271 is formed and is connected to the second portion 402 only by the second coating layer 43. ing. The door portion 275 can be bent in the Z-axis direction. Similarly, in the center of the fourth portion 404 in the Y-axis direction, the door portion 274 is arranged on the side where the through hole 271 is formed and is connected to the fourth portion 404 only by the second coating layer 43. Is provided. The door portion 274 can be bent in the Z-axis direction. In the third portion 403, three projecting portions 278d, 278e, and 278f projecting to the side where the through hole 271 is formed are formed side by side in the X-axis direction at predetermined intervals in the Y-axis direction. Has been done. The third portion 403 is formed with four through holes 272a, 272b, 272c, and 272d that are formed on the outer side and are recessed in the Y-axis direction.

The inner plate constituent region 25 includes a first inner plate constituent region 251, a second inner plate constituent region 281, a third inner plate constituent region 252, and a fourth inner plate constituent region 282. The first inner plate constituent region 251 and the third inner plate constituent region 252 form a pair and are arranged so as to be line-symmetric with respect to the reference line G as shown in FIG. FIG. 11 is a schematic plan view showing a first inner plate constituent region 251 and a second inner plate constituent region 281.

With reference to FIGS. 1 and 11, the first inner plate constituent region 251 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. Y of the end portion 251a on the side where the first outer plate constituent region 241 of the first inner plate constituent region 251 is located and the end portion 251b on the side opposite to the side where the first outer plate constituent region 241 is located. The axial length L ₂₅ is the same as the length L _3. The second outer plate constituent area 242 of the first inner plate constituent region 251 and the end portion 251c on the side where the top plate constituent region 23 is located, and the second outer plate constituent region 242 and the top plate constituent region 23 are located. _{The length L 26} in the X-axis direction with the end portion 251 d on the opposite side to the side is shorter than the length L ₄ by the thickness S ₁ minute. The first inner plate constituent region 251 is a second boundary portion 24B which is a boundary portion between the first inner plate constituent region 251 and the first outer plate constituent region 241 and is formed only by the second covering layer 43. It is connected to one outer plate constituent area 241. The first coating layer 42, the heat insulating member 41, and the second coating layer 43 are cut at the portion corresponding to the region where the protruding portion 52 is provided. The first inner plate constituent region 251 is arranged so as to be adjacent to the position on the lower side in the X-axis direction of the second outer plate constituent region 242 and the top plate constituent region 23. At the boundary between the first inner plate constituent region 251 and the second outer plate constituent region 242 and the top plate constituent region 23, the first coating layer 42, the heat insulating member 41, and the second coating layer 43 are cut. ing. Therefore, the first inner plate constituent region 251 can be bent at the second boundary portion 24B so as to overlap the first outer plate constituent region 241.

A protrusion 312 protruding in the Y-axis direction is formed at the center of the end portion 251b on the side opposite to the side where the first outer plate constituent region 241 of the first inner plate constituent region 251 is located in the X-axis direction. ing. The protrusion 312 is composed of three orthogonal straight lines when viewed in a plane from the Z-axis direction. The protrusion 312 is formed at a position having a _{length L 27 in} the X-axis direction from the end 251c. In this embodiment, the length L ₂₇ is the same as the length L _{5. In the present embodiment, the length L 28} of the protrusion 312 in the X-axis direction is the same as the length L _6. The length L ₂₈ may be slightly shorter than the length L _6. The protrusion 312 protrudes from the end 251b by a thickness S of ₁ minute. With such a configuration, when the first inner plate constituent region 251 is bent, the protruding portion 312 of the first inner plate constituent region 251 has a protruding portion 51 of the first outer plate constituent region 241. Overlaid on the area where it is located.

A first notch 317 recessed in the X-axis direction is formed at a position of _{length L 33} from the end 251 b. _{In the present embodiment, the length L 30} of the bottom portion 317a defining the first notch portion 317 in the Y-axis direction is the same length as the thickness S _1. The length L ₃₀ may be slightly longer than the thickness S _1. The first cutout portion 317 is long in the X-axis direction from the end portion 251d on the side opposite to the side where the second outer plate constituent region 242 and the top plate constituent region 23 of the first inner plate constituent region 251 are located. Only L ₃₂ is dented. A between the first notch portion 317 and the end portion 251b, so as to connected to the end portion 251b, recess 316 is recessed by the thickness _{S 1} from the end portion 251d is formed. With such a configuration, when the connection portion constituent area 26 and the internal space arrangement region 27 are bent, the connection portion constituent region 26 is fitted into the recess 316, and the protruding portion 277 formed in the internal space arrangement region 27 is formed. Can be fitted into the first notch 317. The first notch 317 is formed with an inclined portion 318 in which the opening widens toward the outside in the region on the side where the recess 316 is formed. By forming the inclined portion 318 in this way, the protruding portion 277 can be easily fitted into the first notched portion 317.

The second inner plate constituent region 281 has a substantially rectangular shape when viewed in a plane from the Z-axis direction. In the present embodiment, the end portion 281a on the side opposite to the side where the first outer plate constituent region 241 of the second inner plate constituent region 281 is located and the side where the first outer plate constituent region 241 is located are located. _{The length L 34} in the Y-axis direction with the end portion 281b is, for example, 108 mm. In the present embodiment, the end portion 281c of the second inner plate constituent region 281 on the side where the fourth outer plate constituent region 244 is located and the end portion 281c on the side opposite to the side where the fourth outer plate constituent region 244 is located are opposite to each other. _{The length L 35} in the X-axis direction with the end 281d is the same as the length L _17. The length L ₃₅ may be slightly shorter than the length L _17. The second inner plate constituent region 281 is a second boundary portion 24B which is a boundary portion between the second inner plate constituent region 281 and the first outer plate constituent region 241 and is formed only by the second covering layer 43. It is connected to one outer plate constituent area 241. The first coating layer 42, the heat insulating member 41, and the second coating layer 43 are cut at the portion corresponding to the region where the protruding portion 51 is provided. The second inner plate constituent region 281 is arranged so as to be adjacent to the position on the lower side in the X-axis direction of the fourth outer plate constituent region 244. At the boundary between the second inner plate constituent region 281 and the fourth outer plate constituent region 244, the first coating layer 42, the heat insulating member 41, and the second coating layer 43 are cut. With such a configuration, the second inner plate constituent region 281 can be bent at the second boundary portion 24B.

At the end 281a of the second inner plate constituent region 281 on the side opposite to the side where the first outer plate constituent region 241 is located, two fitting recesses 321 and 322 recessed in the Y-axis direction are formed in the X-axis direction. It is formed at intervals. The fitting recess 321 has a tapered shape in which the opening width narrows toward the opening. _{That is, the length L 37} in the X-axis direction of the opening of the side wall portion 321b that defines the fitting recess 321 is longer than _{the length L 36 in} the X-axis direction of the bottom portion 321a arranged on one end side of the side wall portion 321b. Is also formed short. The fitting recess 322 has the same shape as the fitting recess 321. When the second inner plate constituent region 281 is bent at the end portion 241a, the end portion 281b on the side where the first outer plate constituent region 241 of the second inner plate constituent region 281 is located has the shape of a protruding portion 51. The corresponding recess 323 is formed. Then, when the first inner plate constituent region 251 is bent at the end portion 241b, the protrusion 312 formed in the first inner plate constituent region 251 can be fitted into the recess 323.

FIG. 12 is a schematic plan view showing a third inner plate constituent region 252 and a fourth inner plate constituent region 282. The fourth inner plate constituent region 282 and the second inner plate constituent region 281 have substantially the same shape. Hereinafter, a portion of the fourth inner plate constituent region 282 different from the second inner plate constituent region 281 will be described. With reference to FIG. 12, the end portion 282a of the fourth inner plate constituent region 282 opposite to the side on which the third outer plate constituent region 243 is located and the side on which the third outer plate constituent region 243 is located are located. _{The length L 38} in the Y-axis direction with the end portion 282b is the same _{as the length L 2} when combined with the length L _34. At the end portion 282a, two fitting portions 341 and 342 protruding in the Y-axis direction are formed at intervals in the X-axis direction. The fitting portions 341 and 342 have a shape protruding so that the outer diameter increases in the Y-axis direction. _{That is, the length L 38} in the X-axis direction of the end portion 341a on the side opposite to the side where the main body portion 344 of the fourth inner plate constituent region 282 of the fitting portion 341 is located is the end on the side where the main body portion 344 is located. The portion 341b is formed longer than _{the length L 39} in the X-axis direction. In this embodiment, the length L ₃₈ is slightly shorter than the length L _36. The length L ₃₈ may be the same as the length L _36. In this embodiment, the length L ₃₉ is slightly shorter than the length L _37. The length L ₃₉ may be the same as the length L _37.

The heat retaining structure 2 includes a holding portion 31, a partition state maintaining portion 36, and an upright state maintaining portion 37. With reference to FIGS. 1, 11 and 12, the holding portion 31 holds a state in which the inner plate constituent region 25 is overlapped with the outer plate constituent region 24. In the present embodiment, the holding portion 31 includes a protrusion 312 of the first inner plate constituent region 251, a protrusion 332 of the third inner plate constituent region 252, a recess 323 that receives the protrusion 312, and a protrusion 332. Includes a recess 343 that receives the. The protrusion 312 and the recess 323 hold the first inner plate constituent region 251 overlaid on the first outer plate constituent region 241. The protrusion 332 and the recess 343 can maintain a state in which the third inner plate constituent region 252 is overlapped with the third outer plate constituent region 243.

The holding portion 31 includes fitting portions 341 and 342 formed in the fourth inner plate constituent region 282, a fitting recess 321 that receives the fitting portion 341, and a fitting recess 322 that receives the fitting portion 342. The fitting portions 341 and 342 and the fitting recesses 321 and 322 can maintain a state in which the second inner plate constituent region 281 and the fourth inner plate constituent region 282 are overlapped with the fourth outer plate constituent region 244.

The partition state maintaining unit 36 maintains a state in which the internal space arrangement area 27 partitions the space inside the heat insulating box 1. In the present embodiment, the partition state maintaining portion 36 includes a protrusion 276, 277 in the partition constituent region, a first notched portion 317 formed in the first inner plate constituent region 251 and a third inner plate. Includes a second notch 337 formed in the constituent area 252. The protruding portion 276, 277, the first cutout portion 317, and the second cutout portion 337 can maintain a state in which the internal space arrangement area 27 partitions the space inside the heat insulating box 1.

When the outer plate constituent region 24 is bent at the first boundary portion 24A, the upright state maintaining portion 37 maintains the state in which the outer plate constituent region 24 stands upright with respect to the bottom plate constituent region 21. In the present embodiment, the fitting recesses 321 and 322 formed in the second inner plate constituent region 281 and the fitting portions 341 and 342 provided in the fourth inner plate constituent region 282 are the upright state maintaining portion 37. But also. The fitting recesses 321 and 322 and the fitting portions 341 and 342 can maintain a state in which the first outer plate constituent region 241 and the third outer plate constituent region 243 stand upright with respect to the bottom plate constituent region 21.

Next, an example of a procedure for assembling the heat insulating structure 2 according to the embodiment of the present invention into the heat insulating box 1 will be described. FIG. 13 is a flowchart showing a process of assembling the heat insulating structure 2 into the heat insulating box 1.

With reference to FIG. 13, first, the heat insulating structure 2 having the shape shown in FIG. 1 is prepared, and the first inner plate constituent region 251 and the third inner plate constituent region 252 are bent (in FIG. 13, step S11, step S11, Hereinafter, "step" is omitted). FIG. 14 is a perspective view showing an intermediate in a state in which the first inner plate constituent region 251 and the third inner plate constituent region 252 of the heat insulating structure 2 are bent. Referring to FIGS. 1 and 14, folding the first inner plate arrangement region 251 in the direction of arrow R ₁ in the second boundary portion 24B. In this way, the first inner plate constituent region 251 is arranged so as to overlap the first outer plate constituent region 241. Similarly, the third inner plate arrangement region 252 is bent in the direction of the arrow R ₂ in the second boundary portion 24B, a third inner plate arrangement region 252 is arranged so as to overlap the third outer plate arrangement region 243 Will be done. At this time, the protruding portion 52 of the first outer plate constituent region 241 and the protruding portion 72 of the third outer plate constituent region 243 appear.

FIG. 15 is a perspective view showing an intermediate in a state where the first outer plate constituent region 241 and the second outer plate constituent region 242 are erected. With reference to FIGS. 14 and 15, the first outer plate constituent region 241 and the third outer plate constituent region 243 are bent (S13). More specifically, the first outer plate constituent region 241 and the third outer plate constituent region 243 are bent at the first boundary portion 24A while standing in the directions of _{arrows R 5} and R _{6, respectively, and the second} The fitting portions 341 and 342 of the fourth inner plate constituent region 282 are fitted into the fitting recesses 321 and 322 of the inner plate constituent region 281 of the above. At this time, the protrusion 312 of the first inner plate constituent region 251 is fitted into the recess 323 formed in the second inner plate constituent region 281. Similarly, the protrusion 332 of the third inner plate constituent region 252 is fitted into the recess 343 formed in the fourth inner plate constituent region 282. The first outer plate constituent area 241 and the third outer plate constituent region 243 are perpendicular to the bottom plate constituent region 21 due to the fitting recesses 321 and 322 as the upright state maintaining portion 37 and the fitting portions 341 and 342. It can be maintained upright. Further, the protrusion 312 of the holding portion 31, by the recess 323, movement in the bending direction R ₁ of the first inner plate configuration area 251 is restricted, the first inner plate construction area 251 first outer The state of being overlapped with the plate constituent area 241 can be maintained. And the protrusion 332 of the holding portion 31, by the recess 343, movement in the bending direction R ₂ of the third inner plate configuration area 252 is restricted, the third inner plate configuration area 252 is a third outer plate structure The state of being overlapped with the region 243 can be maintained.

FIG. 16 is a perspective view showing an intermediate in which the second inner plate constituent region 281 and the fourth inner plate constituent region 282 are in a bent state. With reference to FIG. 16, the fitting recesses 321 and 322 of the second inner plate constituent region 281 and the fitting portions 341 and 342 of the fourth inner plate constituent region 282 are fitted to form the second inner plate. The region 281 and the fourth inner plate constituent region 282 are flush with each other. By fitting the protrusion 312 of the first inner plate constituent region 251 into the recess 323 formed in the second inner plate constituent region 281, the first inner plate constituent region 251 becomes the second inner plate constituent region 281. Is in contact with. Similarly, by fitting the protrusion 332 of the third inner plate constituent region 252 into the recess 343 formed in the fourth inner plate constituent region 282, the third inner plate constituent region 252 becomes the fourth inner plate. It is in contact with the constituent area 282. From the viewpoint of easy understanding, the region V indicated by the alternate long and short dash line is a region in which the protrusion 332 of the third inner plate constituent region 252 is fitted into the recess 343 formed in the fourth inner plate constituent region 282.

FIG. 17 is a perspective view showing an intermediate in a state where the internal space arrangement region 27 is bent. With reference to FIGS. 16 and 17, the fourth outer plate constituent region 244 is bent (S13). More specifically, while folding the fourth outer plate arrangement region 244 in the direction of arrow R ₇ in the first boundary portion 24A, along with folding the inner space arrangement region 27, a third boundary connection unit configured region 26 Bend at portion 24C. At this time, the fourth outer plate constituent region 244 is overlapped with the second inner plate constituent region 281 and the fourth inner plate constituent region 282. Further, the protruding portion 277 of the internal space arrangement region 27 is fitted into the first notched portion 317 formed in the first inner plate constituent region 251. Similarly, the protrusion 276 is fitted into the second notch 337 formed in the third inner plate constituent region 252. As a result, the internal space arrangement area 27 is arranged so as to intersect perpendicularly with the bottom plate composition area 21, and the space S surrounded by the fourth outer plate composition area 244, the connection portion composition area 26, and the interior space arrangement area 27. Is formed. As described above, the second inner plate constituent area 281 and the fourth inner plate constituent region 282 are combined with the fourth outer plate constituent region 244 by the fitting portions 341 and 342 as the holding portion 31 and the fitting recesses 321 and 322. Can be maintained in a state of being stacked on top of each other. Further, the internal space arrangement area 27 partitions the space inside the heat insulating box 1 by the protruding portions 276 and 277 as the partition state maintaining portion 36, the first notched portion 317, and the second notched portion 337. The state can be maintained. The first notch 317 and the second notch 337 are provided with tapered inclined portions 318 and 338. Therefore, the protrusions 276 and 277 can be easily fitted. In a state where the first outer plate constituent region 241 and the third outer plate constituent region 243 shown in FIG. 17 are erected with respect to the bottom plate constituent region 21, the top plate constituent region 23 positions the object to be accommodated. It may be arranged in the bottom plate constituent area 21 from the side of the bottom plate.

With reference to FIG. 17, the second outer plate constituent area 242 is bent (S14). More specifically, while bending the second outer plate arrangement region 242 in the direction of arrow R ₈ in the first boundary portion 24A, bends the top plate structure region 23. At this time, the protrusion 52 of the first outer plate constituent region 241 is fitted into the recess 65 formed in the second outer plate constituent region 242. Similarly, the protrusion 72 of the third outer plate constituent region 243 is fitted into the recess 66 formed in the second outer plate constituent region 242. Then, the protruding portion 231 of the top plate constituent region 23 is fitted into the recess 54 formed in the first outer plate constituent region 241. Similarly, the protrusion 232 of the top plate constituent region 23 is fitted into the recess 74 formed in the third outer plate constituent region 243. In this way, the heat insulating box 1 shown in FIG. 4 is assembled.

According to the heat insulating structure 2 having such a configuration, the outer plate constituent region 24 is bent at the first boundary portion 24A, and the inner plate constituent region 25 is bent at the second boundary portion 24B, so that the bottom plate 11 and the bottom plate 11 can be easily formed. It can be in the shape of a box including the side plate 10. When not in use, a plurality of sheets can be stacked in a thin plate shape, and efficient storage can be achieved without being bulky. Since the side plate 10 in which the outer plate constituent region 24 and the inner plate constituent region 25 are overlapped is composed of a plurality of plate-shaped members, the heat insulating property of the heat insulating box 1 can be improved. Since the inner plate constituent area 25 is held in a state of being overlapped by the holding portion 31, it is possible to avoid interference between the object accommodated in the internal space of the heat insulating box 1 and the side plate 10. In such a heat insulating structure 2, the blade is cut off from the entire outer shape of the heat insulating structure 2 while leaving the second covering layer 43 for the first boundary portion 24A and the second boundary portion 24B. It can be manufactured by punching a member in the plate thickness direction. Therefore, the manufacturing process can be simplified and the manufacturing cost can be reduced. As a result, such a heat insulating structure 2 can be efficiently stored and has improved heat insulating properties, and can realize a reduction in manufacturing cost.

FIG. 18 is a perspective view showing an example of a folded state for storing the heat insulating structure 2. With reference to FIGS. 1 and 18, the second outer plate constituent region 242 is bent at the first boundary portion 24A between the bottom plate constituent region 21 and the second outer plate constituent region 242. Next, the first inner plate constituent region 251 is bent at the second boundary portion 24B between the first outer plate constituent region 241 and the first inner plate constituent region 251. Next, the third inner plate constituent region 252 is bent at the second boundary portion 24B between the third outer plate constituent region 243 and the third inner plate constituent region 252. As a result, as shown in FIG. 18, the heat insulating structure 2 in the folded state can be formed. With such a configuration, the heat insulating structure 2 can be stored in a more space-saving manner.

FIG. 19 is a perspective view showing a state in which the door portion 274 is opened. In the above embodiment, a through hole 272 is formed in the internal space arrangement region 27. Further, through holes 272a, 272b, 272c, and 272d are formed in the internal space arrangement region 27. With such a configuration, for example, when the ice pack is arranged in the space S and the area where the object requiring cold insulation is arranged and the area where the ice pack is arranged are arranged apart from each other, it is emitted from the ice pack. Cold air can be sent to a space that houses objects that need to be kept cold. Protruding portions 278d, 278e, and 278f are formed in the internal space arrangement region 27. With such a configuration, it is possible to prevent an object arranged in the space S from moving from the space S. By opening the door portions 274 and 275 provided in the internal space arrangement area 27 as shown in FIG. 19, when the through hole 272 formed in the internal space arrangement area 27 is viewed in a plane from the Y-axis direction. The area of can be made larger. Therefore, for example, when the ice pack is arranged in the space S, the amount of cold air sent from the ice pack can be adjusted by opening and closing the door portions 274 and 275.

In the above embodiment, the holding portion 31 is provided in the first inner plate constituent region 251 and the third inner plate constituent region 252, and has protrusions 312 and 332 and protrusions protruding in the Y-axis direction. Includes recesses 323 and 343 as receiving recesses for receiving 312 and 332. With such a configuration, by fitting the protrusions 312 and 332 into the recesses 323 and 343, the first inner plate constituent region 251 and the third inner plate constituent region 252 are bent in the bending directions R ₁ and R _2. You can regulate moving to.

In the above embodiment, in the third boundary portion 24C different from the second boundary portion 24B in the fourth outer plate constituent region 244, the fourth outer plate constituent region 244 and the second covering layer 43 It is connected and includes an internal space arrangement area 27 that partitions the internal space of the heat insulating box 1 when bent at the third boundary portion 24C, and includes a partitioning constituent area 28 that partitions the internal space of the heat insulating box 1. With such a configuration, when bent at the third boundary portion 24C, a plurality of regions partitioned by the internal space arrangement region 27 can be formed inside the heat insulating box 1. Therefore, it is possible to put an object in each of a plurality of partitioned spaces. Further, since it is integrally manufactured as the heat insulating structure 2, smooth assembly is facilitated.

In the above embodiment, the heat insulating box 1 has a rectangular parallelepiped shape and includes a top plate 16 arranged at a position facing the bottom plate 11. The bottom plate constituent area 21 is allocated in a rectangular shape when viewed in a plane from the Z-axis direction, and the outer plate constituent region 24 includes a first outer plate constituent region 241 and a second outer plate constituent region 242. , A third outer plate constituent region 243 and a fourth outer plate constituent region 244 are included, and are connected by a second covering layer 43 at a portion corresponding to each side of the bottom plate constituent region 21. The first inner plate constituent region 251 is connected by a second covering layer 43 at the second boundary portion 24B of the first outer plate constituent region 241. The third inner plate constituent region 252 is connected by a second covering layer 43 at the second boundary portion 24B of the third outer plate constituent region 243. With such a configuration, when the heat insulating structure 2 is bent into a box shape, a sufficient space for accommodating an object can be formed inside.

In the above-described embodiment, the outer plate constituent region 24 includes a first outer plate constituent region 241, a second outer plate constituent region 242, a third outer plate constituent region 243, and a fourth outer plate constituent region. When each of the 244s is bent at the first boundary portion 24A, the first outer plate constituent region 241 and the third outer plate constituent region 243 face each other, and the second outer plate constituent regions 242 and the fourth outer plate constituent regions 242 and the fourth. It is arranged so as to face the outer plate constituent area 244 of the above. The inner plate constituent region 25 is connected to the first outer plate constituent region 241 by the second covering layer 43 at the second boundary portion 24B of the first outer plate constituent region 241 at the second boundary portion 24B. The second boundary between the first inner plate constituent area 251 arranged so as to overlap the inside of the heat insulating box 1 with respect to the first outer plate constituent region 241 when bent, and the third outer plate constituent region 243. In the portion 24B, the third outer plate constituent region 243 and the second coating layer 43 are connected to each other, and when bent at the second boundary portion 24B, the inside of the heat insulating box 1 with respect to the third outer plate constituent region 243. Includes a third inner plate constituent area 252, which is arranged so as to overlap with each other. With such a configuration, the outer plate constituent region 24 and the inner plate constituent region 25 can be arranged in an overlapping state on the two side plates 10. Therefore, the heat insulating property of the heat insulating box 1 can be further improved.

In the above-described embodiment, in the heat insulating structure 2, the outer plate constituent region 24 includes the first outer plate constituent region 241, the second outer plate constituent region 242, the third outer plate constituent region 243, and the third outer plate constituent region 243. When each of the fourth outer plate constituent regions 244 is bent at the first boundary portion 24A, the first outer plate constituent region 241 and the third outer plate constituent region 243 face each other and the second outer plate is formed. The plate constituent area 242 and the fourth outer plate constituent region 244 are arranged so as to face each other. The inner plate constituent region 25 is connected to the first outer plate constituent region 241 by the second covering layer 43 at the second boundary portion 24B of the first outer plate constituent region 241 at the second boundary portion 24B. The second boundary between the second inner plate constituent area 281 arranged so as to overlap the inner side of the heat insulating box 1 with respect to the fourth outer plate constituent region 244 when bent, and the third outer plate constituent region 243. In the portion 24B, the third outer plate constituent region 243 and the second covering layer 43 are connected to each other, and when bent at the second boundary portion 24B, the inside of the heat insulating box 1 with respect to the fourth outer plate constituent region 244. Includes a fourth inner plate constituent area 282, which is arranged so as to overlap with each other. The upright state maintaining portion 37 is formed in the second inner plate constituent area 281 and the fourth inner plate constituent region 282, and is fitted into the first outer plate constituent region 241 and the third outer plate constituent region 241. Includes a concavo-convex structure that maintains the region 243 standing upright with respect to the bottom plate constituent region 21. The concavo-convex structure also serves as a holding portion 31 that holds the arranged state in which the second inner plate constituent region 281 and the fourth inner plate constituent region 282 are overlapped with the fourth outer plate constituent region 244 by fitting. By fitting the concave-convex structure, the first outer plate constituent region 241 and the third outer plate constituent region 243 can maintain a constant shape standing upright with respect to the bottom plate constituent region 21, and the second inner side can be maintained. It is possible to maintain the arrangement state in which the plate constituent region 281 and the fourth inner plate constituent region 282 are overlapped with the fourth outer plate constituent region 244. Therefore, it is possible to smoothly accommodate the object to be accommodated in the internal space of the heat insulating box 1 while maintaining the state in which a part of the side plate 10 is erected. Further, it is possible to improve the heat insulating property of the heat insulating box 1 while preventing the object housed in the internal space of the heat insulating box 1 from interfering with the side plate 10.

In the above embodiment, the heat insulating member 41 is a foamed member, but the present invention is not limited to this, and the heat insulating member 41 may be corrugated cardboard or the like.

In the above embodiment, the first coating layer 42 and the second coating layer 43 are made of paper, but the present invention is not limited to this, and the first coating layer 42 and the second coating layer 43 are not limited to this. It may be a resin film. The resin film is, for example, a polypropylene film or the like. Further, the first coating layer 42 and the second coating layer 43 may be a laminate in which a resin film is bonded to paper, and examples thereof include a laminate in which a polypropylene film is bonded to kraft paper. Be done.

It should be understood that the embodiments disclosed here are exemplary in all respects and are not restrictive in any way. The scope of the present invention is defined by the scope of claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The heat insulating structure of the present application can be efficiently stored and can be improved in heat insulating property, and can be applied particularly advantageously when it is required to realize a reduction in manufacturing cost.

1 Insulation box, 2 Insulation structure, 10 Side plate, 11 Bottom plate, 12 First side plate, 13 Second side plate, 14 Third side plate, 15 Fourth side plate, 16 Top plate, 21 Bottom plate constituent area, 22 Side plate Constituent area, 23 Top plate Constituent area, 23a, 23b, 26a, 26b, 27a, 27b, 241a, 241b, 241c, 241d, 242a, 242b, 242c, 242d, 243a, 243b, 243d, 244a, 244b, 251a, 251b , 251c, 251d, 281a, 281b, 281c, 281d, 282a, 282b, 341a, 341b end, 24 outer plate constituent area, 24A first boundary part, 24B second boundary part, 24C third boundary part, 25 Inner plate constituent area, 26 Connection part constituent area, 27 Internal space arrangement area, 28 Partition constituent area, 31 Holding part, 36 Partition state maintenance part, 37 Standing state maintenance part, 41 Insulation member, 42 First coating layer , 43 Second coating layer, 51,52,71,72,231,232,276,277,278d Protruding part, 54,65,66,74,316,323,343 Recess, 211 First side, 212 Second side, 213 Third side, 214 Fourth side, 241 First outer plate constituent area, 242 Second outer plate constituent area, 243 Third outer plate constituent area, 244 Fourth outer plate Constituent area, 251 first inner plate constituent area, 252 third inner plate constituent area, 271,272,272a through hole, 274,275 door part, 281 second inner plate constituent area, 282 fourth inner plate Constituent area, 312,332 protrusions, 317 first cutouts, 317a, 321a, 541,651 bottoms, 318, 338 slopes, 321 and 322 fitting recesses, 321b side walls, 337 second cutouts, 341, 342 Fitting part, 344 Main body part, 401 First part, 402 Second part, 403 Third part, 404 Fourth part, 411 First surface, 412 Second surface, 413 surface.

Claims (10)

A heat insulating structure that includes a plate-shaped heat insulating member and a coating layer arranged on one surface of the heat insulating member in the plate thickness direction, and is bendable in the shape of a box including a bottom plate and a side plate.
The bottom plate constituent area, which is the area corresponding to the bottom plate,
The outer plate constituent region, which is a region corresponding to the side plate and is connected by the coating layer at the first boundary portion which is the boundary portion with the bottom plate constituent region, and the first boundary in the outer plate constituent region. At a second boundary portion different from the portion, the outer plate constituent region is connected to the coating layer so as to overlap the outer plate constituent region inside the box when bent at the second boundary portion. The inner plate constituent area to be arranged, the side plate constituent area including, and the side plate constituent area,
A holding portion for holding an arrangement state in which the inner plate constituent region is overlapped with the outer plate constituent region is provided .
The bottom plate constituent area is allocated in a rectangular shape when viewed in a plane from the plate thickness direction.
The outer plate constituent region includes a first outer plate constituent region, a second outer plate constituent region, a third outer plate constituent region, and a fourth outer plate constituent region.
The first outer plate constituent region, the second outer plate constituent region, the third outer plate constituent region, and the fourth outer plate constituent region are each in a portion corresponding to each side of the bottom plate constituent region. , Connected by the coating layer,
The outer plate constituent region includes the first outer plate constituent region, the second outer plate constituent region, the third outer plate constituent region, and the fourth outer plate constituent region, respectively. When bent at the boundary portion, the first outer plate constituent region and the third outer plate constituent region face each other, and the second outer plate constituent region and the fourth outer plate constituent region are opposed to each other. Arranged to face each other
When the inner plate constituent region is connected to the first outer plate constituent region by the coating layer at the second boundary portion of the first outer plate constituent region and is bent at the second boundary portion. At the first inner plate constituent region arranged so as to overlap the first outer plate constituent region inside the box and the second boundary portion of the third outer plate constituent region. A third that is connected to the third outer plate constituent region by the coating layer and is arranged so as to overlap the third outer plate constituent region inside the box when bent at the second boundary portion. Including the inner plate constituent area of
The first inner plate constituent region is arranged so as to be adjacent to the second outer plate constituent region.
The third inner plate constituent region is a heat insulating structure arranged so as to be adjacent to the second outer plate constituent region. The first aspect of the present invention, wherein the holding portion includes a protrusion provided in the inner plate constituent region and projects in a direction perpendicular to a plane perpendicular to the plate thickness direction, and a receiving recess for receiving the protrusion. Thermal insulation structure. The outer plate constituent region is connected to the outer plate constituent region by the coating layer at a third boundary portion different from the second boundary portion in the outer plate constituent region, and when bent at the third boundary portion, the box The heat insulating structure according to claim 1 or 2, further comprising a partitioning constituent area that includes an internal space arrangement area that partitions the internal space and partitions the internal space of the box. The heat insulating structure according to claim 3, wherein a through hole penetrating in the plate thickness direction is formed in the internal space arrangement region. The heat insulating structure according to claim 3 or 4, further comprising a partition state maintaining portion for maintaining a state in which the internal space arrangement area partitions the space inside the box. 1. A claim 1 further comprises an upright state maintaining portion that maintains an upright state of the outer plate constituent region with respect to the bottom plate constituent region when the outer plate constituent region is bent at the first boundary portion. The heat insulating structure according to any one of 5 to 5. The box has a rectangular parallelepiped shape and includes a top plate arranged at a position facing the bottom plate.
A top plate constituent area, which is an area corresponding to the top plate, is further provided .
The inner plate constituent region is connected by the coating layer at the second boundary portion of at least one of the second outer plate constituent region and the fourth outer plate constituent region. The heat insulating structure according to any one of items 1 to 6. The upright state maintaining portion is formed in the second inner plate constituent area and the fourth inner plate constituent region , and by fitting the first outer plate constituent region and the third outer plate constituent region. Includes a concavo-convex structure that maintains the constituent area upright with respect to the bottom plate constituent region.
The concavo-convex structure also serves as a holding portion that holds the arranged state in which the second inner plate constituent region and the fourth inner plate constituent region are overlapped with the fourth outer plate constituent region by fitting. The heat insulating structure according to any one of claims 1 to 7. The concave-convex structure is formed in any one of the second inner plate constituent region and the fourth inner plate constituent region , and is a fitting portion that protrudes in a direction perpendicular to the plate thickness direction. The heat-retaining structure according to claim 8 , further comprising a fitting recess for receiving the fitting portion. The heat insulating structure according to any one of claims 1 to 9, wherein the coating layer is paper.

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