JP2000226075A - Heat insulating cover for foldable container and method for using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating cover for a foldable container and a method for using it in which its volume in case of folding and storing it can be reduced, it can be surely stored in a foldable transporting container, and a high heat insulating capability can be realized. SOLUTION: A heat insulating cover 21 formed by a thermal insulating sheet into a rectangular box shape has a storing space therein. A flat plate-like inner side wall 26 is pivotally hung at an upper end edge of a side wall 21b at a short side. The cover 21 is folded in such a way that each of the side walls 21a, 21b is bent inwardly while the inner side wall 26 is turned by 90 deg. in an upward direction and arranged in a horizontal direction. At this time, a lower engaging element 28 fixed to the lower end of the side wall 21b is engaged with an outer surface of an upper lid through a plane fastener. This cover 21 is stored in the container main body 11 of a foldable transporting container, used and stored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for transporting and storing commodities requiring temperature control such as refrigeration and freezing, and can save storage space by being folded small when not in use. The present invention relates to a cold storage cover for a foldable container housed inside a foldable transport container.

[0002]

2. Description of the Related Art Conventionally, when a refrigerated or frozen product is transported while being maintained at a predetermined temperature, a transport container having a cooling function has been used. As such a transport container, for example, a transport container in which a container body formed in a rectangular box shape with a synthetic resin is covered from the outside with a heat insulating sheet, and the like can be mentioned. However, when using or not using such a transport container, it is necessary to cover or remove the heat insulating sheet from the container body when using or not using it, which is very inconvenient and requires a large space for storage when not in use. There was a problem of taking.

[0003] In order to solve such a problem, foldable transport containers having various cold insulation functions have been proposed. For example, a foldable transport container disclosed in Japanese Utility Model Publication No. 2-1269 discloses a foldable container body, and a foldable flexible heat-insulating sheet-like cold insulation cover disposed in the container body. It is composed of

[0004] The container body of the foldable transport container,
It is composed of a shallow box-shaped bottom, a pair of opposed long and short side walls erected on the periphery of the bottom, and a square frame-shaped opening frame provided at the upper end of each side wall. Each long side wall is vertically divided into two parts, and is formed of a pair of plate members foldably connected by a connection shaft, and both upper and lower ends of each plate material are rotated to the bottom and the long side of the opening frame by a rotation shaft. It is connected as possible. Each short side wall is formed of one sheet material, and the upper end is connected to the short side of the opening frame by a connecting shaft. Further, the heat-insulating sheet-shaped cold insulation cover is joined to a bottom wall of the container body by a hook-and-loop fastener.

[0005] When the transport container is folded,
First, after the pair of short side walls are folded into the opening frame, the opening frame is made to approach the bottom so that the bottom and the opening frame are stacked. Then, each long side wall in a state of being folded in half is stored in the bottom and the inside of the opening frame. Next, the container main body is folded by being folded in a state where each short side wall is stacked on the upper part of each long side wall. At this time, the cold insulation cover is housed inside the bottom so as to be located between the bottom wall and each long side wall in a folded state.

On the other hand, when the transport container is used, the opening frame is lifted so as to be separated from the bottom, and each long side wall folded in half is stretched into a single plate. Next, the container main body is assembled by rotating and pressing each short side wall from the inside to the outside of the container main body. Then, the cold storage cover folded in the bottom portion is extended to the opening end of the opening frame, so that the refrigerated or frozen product is accommodated therein, and the product is transported in that state.

[0007]

However, in the conventional foldable transport container, since the long side wall and the short side wall constituting the container body are foldable,
Many gaps are inevitably formed everywhere in the container body, and the cooling capacity is almost zero. Therefore, in order to provide the foldable transport container with a high cooling performance, it is necessary to cover the foldable transport container with a heat insulating sheet-shaped cooling cover having an excellent heat insulating property and an increased thickness. However, when the thickness of the heat insulating sheet is increased, the volume when the heat insulating cover is folded also increases at the same time, so that the heat insulating sheet may not be accommodated in the foldable transport container.

The present invention has been made by paying attention to the problems existing in the prior art as described above. The purpose is to reduce the volume when folded and stored, and to be able to reliably house in a foldable transport container, and to be able to exhibit a high cooling performance, a foldable container cold insulation cover and It is to provide a method of using the same.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention of a refrigerated container cooling cover according to claim 1 is provided at a bottom formed in a square box shape and at a peripheral edge of the bottom. A cold storage cover for a foldable container that is housed inside a foldable transport container that is configured so that each side wall can be folded inside the bottom portion, and is formed in a rectangular box shape by an insulating sheet. And a bottom wall sheet, a pair of opposed side wall sheets erected on the peripheral edge of the bottom wall sheet, and an upper lid formed to be bent at an upper end edge of the side wall sheet, and opposing side walls. The seat is provided with an inner wall that rotates about the upper edge or the lower edge thereof, and the pair of side wall sheets facing each other is turned inside while the inner wall is rotated toward the upper lid side or the bottom wall sheet. Foldable Are those that form.

According to a second aspect of the present invention, there is provided a cold storage cover for a foldable container according to the first aspect of the present invention, wherein a locking member is provided between the bottom wall sheet and the upper lid, and a pair of opposed side walls is provided. When the sheet is folded, the bottom wall sheet and the upper lid are locked by a locking tool.

According to a third aspect of the present invention, there is provided a method of using the cold storage cover for a foldable container, wherein the inner side wall of the cold storage cover for a foldable container according to the first or second aspect is turned in a horizontal direction. In this state, the pair of side wall sheets facing each other are folded inward.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 1 to 3, the bottom 12 constituting the container main body 11 of the foldable transport container is formed of a synthetic resin in the shape of a bottomed rectangular box having an opening on the upper surface, and the outer surface of the bottom wall 12 a thereof Is provided with a leg portion 13 having a rectangular frame shape. As shown in FIG.
A plurality of bottom wall ribs 14 are provided at the bottom 12 of the shipping container.
The bottom wall 12a is formed in a lattice shape inside the legs 13 on the outer surface of the bottom wall 12a, and receives a force such as torsion applied to the bottom portion 12,
The deformation is prevented.

At the periphery of the opening of the bottom portion 12 of the transport container, a pair of long side walls 15 are erected on both long side walls 12b so as to face each other, and on both short side walls 12c. A pair of short side walls 16 are erected so as to face each other. The mouth frame 17 is formed of a synthetic resin into a rectangular frame shape, and each of the pair of long side walls 15 of the transport container is formed.
And it is supported by the upper end of the short side wall 16. The bottom 1
2. The container main body 11 of the transport container is constituted by the pair of the long side wall 15 and the short side wall 16 and the opening frame 17. An accommodation space is formed inside the container body 11 of the transport container.

The long side wall 15 of the transporting container is formed of a pair of plate members 15a vertically divided into two parts by a synthetic resin, and as shown by a two-dot chain line in FIG.
5a is foldably connected to the transport container by connecting shafts 15b at both ends of one end. A pair of rotating shafts 15c and 15d are provided on both sides of the lower end and the upper end of each long side wall 15 of the transport container, respectively.

The lower rotating shaft 15c of the rotating shafts 15c and 15d is inserted into the rotating holes 12d formed at both ends of the short side wall 12c of the bottom 12 of the transport container. . Each rotating shaft 15d located at the upper part of the transport container is inserted into a rotating hole 17c formed at both ends of the side wall 17b on the short side of the mouth frame 17. That is, each long side wall 15 of the transport container is rotatably supported at both ends on the long side of the bottom portion 12 and the mouth frame 17.

As shown in FIGS. 9 (a) and 9 (b), each short side wall 16 of the transport container is made of a single sheet of synthetic resin, and a pair of side surfaces at the upper end are provided with a pair of side walls. A rotation shaft 16a is provided in a protruding manner. And each rotating shaft 16a
Are inserted into the rotating holes 17c formed at both ends of the side wall 17a on the long side of the mouth frame 17 so that each short side wall 16 of the transport container can be rotated at both ends of the short side of the mouth frame 17. It is supported by.

As shown in FIG. 1, the foldable container cold insulation cover 21 is formed in a rectangular box shape whose upper part is opened by a heat insulating sheet, and has a space for accommodating refrigerated or frozen products. ing. At the periphery of the opening of the cool insulating cover 21, the inner lid 22 is formed by extending the upper end of one of the long side walls 21 a and bending the extended portion. A pair of side lids 23 are provided on both side walls 21 on the short side.
b It is formed by extending the upper end and bending the extended portion. The upper lid 24 is the other side wall 21 on the long side.
a The upper end is extended and the extended portion is bent so as to cover the entire opening of the cold insulation cover 21.

The surface of the inner lid 22, the surface of the pair of side lids 23,
A hook-and-loop fastener 25 is provided at a corresponding position on the back surface of the upper cover 24 and the back surface of the middle cover 22 (not shown). Then, as shown in FIG.
When the inner lid 22 is placed on top of the
The front surface and the back surface of the inner lid 22 are joined by a hook-and-loop fastener 25. Further, as shown in FIG. 8B, the upper lid 24 is bent inward so as to overlap with the inner lid 22 and the pair of lateral lids 23, so that the surfaces of the inner lid 22 and the lateral lid 23 and the back surface of the upper lid 24 are separated. Hook and loop fastener 25
And the opening of the cool insulating cover 21 can be closed so as to be substantially in a sealed state.

As shown in FIGS. 5 and 8 (a), the pair of inner walls 26 are formed of a heat insulating sheet in a flat plate shape, and the upper edges thereof are rotatable with the upper edges of both short side walls 21b. A hook-and-loop fastener 25 is provided below the inner wall 26 while being hung. A surface fastener 25 is provided at a position corresponding to the surface fastener 25 of the inner side wall 26 on the inner surface of the side wall 21 b on the short side of the cool insulation cover 21. The short side wall 21 b of the cool insulating cover 21 and the inner side wall 26 are joined by a hook-and-loop fastener 25.

As shown in FIG. 8 (a), the pair of upper locking members 27 are formed in a band shape by using a cloth or the like, and one end on the short side is formed by the side wall 21b on the short side. It is hinged to the upper center of the outer surface so as to be rotatable. The two pairs of lower locking members 28 are formed in a band shape with a cloth or the like, and one end edge on the short side is rotatably hinged to both lower ends on the outer surface of both short side walls 21b. ing. A hook-and-loop fastener 25 is provided at each of the distal ends of the upper and lower locking members 27 and 28. Further, as shown in FIGS. 8B and 8C, when the cool insulating cover 21 is folded and stored, the upper and lower locking members 27 and 28 are provided on the upper surface of the upper lid 24.
The hook-and-loop fastener 25 is provided at a position where the hook-and-loop fastener 25 at the distal end abuts.

When the opening of the cool insulating cover 21 is closed by the upper lid 24, the upper lid is joined to the upper locking member 27 and the hook-and-loop fastener 25. Further, as shown in FIG. 8 (c), when the cool insulating cover 21 is folded and stored, the lower locking member 28 is joined to the upper lid 24 by the hook-and-loop fastener 25.

As shown in FIGS. 1 and 6, the pair of connecting belts 29 are formed in a belt shape with a cloth or the like. The connecting belt 29 is attached to the bottom wall 21 of the cool cover 21.
c are provided so as to extend in the width direction on both sides of the outer surface, and both ends are joined to the outer surface of the bottom wall 21c. That is, a predetermined gap is maintained between the intermediate portion of the connecting belt 29 and the outer surface of the bottom wall 21c of the cool insulating cover 21.

As shown in FIGS. 1 and 7, a hook 18 is provided at the bottom 12 of the foldable transport container at the bottom wall 12a.
The upper three sides are provided so as to face each other so as to be parallel in the width direction. Each hook 18 is formed integrally with the bottom 12 such that the tip thereof has an inverted L-shape facing the center of the bottom 12 of the transport container, and protrudes from a bottom wall 12 a of the bottom 12. The distance between the two rows of hooks 18 facing each other is
It is set so as to correspond to the interval between the pair of connecting belts 29.

The cooling cover 21 is configured to be accommodated in the container main body 11 of the foldable transport container.
In this state, as shown by the two-dot chain line in FIG.
By being engaged with the inside of the hook 18 protruding from the bottom, the cold insulating cover 21 and the bottom 12 of the transport container are connected. The cold storage cover 21 in the unfolded state accommodates refrigerated or frozen products inside the container body 11 of the transport container,
The upper opening is closed by 3, 24, and is transported in this state.

As shown in FIGS. 4 and 7, a plurality of insertion holes 19 are formed in the bottom wall 12a of the bottom portion 12 of the transport container at positions corresponding to the hooks 18. This insertion hole 1
Reference numeral 9 denotes a hole for removing a mold when the hook 18 is formed integrally with the bottom 12 of the transport container, and cool air is guided into the transport container in a refrigerator or a freezer.

As shown in FIG. 2, the bottom 12
A pair of long side walls 15 are folded so that the respective plate members 15a overlap each other in the container main body 11 of the transport container in a state in which the mouth frame 17 is stacked and folded, and the bottom 12 of the transport container and the mouth frame 17 are stacked. Is housed inside. In addition, the pair of short side walls 16 of the transport container are rotated around the rotation shaft 16a, and are stored inside the mouth frame 17 in a state of being stacked on the pair of long side walls 15 of the transport container. ing. Then, the inside of the bottom 12 and the long side wall 15 of the transport container
The accommodating part 20 is formed between.

[0027] As shown in FIG.
A valley fold line 30 is formed on each side wall 21a on the long side so that each side wall 21a is vertically divided into two and extends in the length direction. A valley line 30 is formed at the center and a mountain line 31 is formed at both ends of the short side wall 21b so that each side wall 21b is vertically divided into two and extends in the width direction. Valley line 3
A valley fold line 30 is formed toward the intersection of 0 and the ridge fold line 31.

As shown in FIGS. 8 (a) and 8 (b), in the cold insulation cover 21, the lids 22, 23 and 24 are overlapped after the inner wall 26 is arranged in the horizontal direction, and the valley fold lines are closed. 30 is folded inside the cool cover 21,
Each mountain fold line 31 is folded by bending it outward. Then, as shown in FIG. 8 (c), the folded cold insulation cover 21 is
8 and the upper lid 24 are joined to each other by the hook-and-loop fastener 25, thereby forming a substantially single plate. Then, as shown in FIG.
Is connected to the bottom 12 of the container body 11 of the transport container, and is accommodated in the accommodating portion 20.

Next, the cold storage cover 2 for the foldable container is provided.
1 will be described. Now, as shown in FIG.
When not in use, the foldable transport container and the foldable container cool cover 21 are stored in a predetermined storage place in a folded state. When using the folding transport container, the folded transport container is assembled so as to form a box shape. That is, first, as shown in FIG. 9B, the bottom 12 and the rim 17 of the container body 11 of the transport container are provided.
The mouth frame 17 is lifted upward so as to be separated from each other, and the pair of long side walls 15 are extended and supported by the bottom portion 12 and both ends of the long side of the mouth frame 17. Next, as shown in FIG. 9A, the pair of short side walls 16 are turned from the inside to the outside of the container main body 11 of the transport container, and are supported by both ends on the short side of the mouth frame 17. The container body 1 of the transport container
1 is assembled.

Subsequently, in the cooling cover 21, the upper cover 2
The upper and lower locking members 27 and 28 joined to the upper cover 4 are peeled off from the upper surface of the upper lid 24, and as shown in FIG.
The upper ends of 1a and 21b are pulled up to the position of the mouth frame 17 of the transport container, and the upper lid 24 is attached to the inner lid 22 and the horizontal lid 23.
And bend outward to open the upper opening. Further, the inner wall 26 of the cool insulating cover 21 is turned downward by 90 ° about the base end thereof, so that the inner wall 26 is joined to the inner side surface of the short side wall 21 b via the hook-and-loop fastener 25. At this time, the inner side wall 26 of the cool insulating cover 21 and the side wall 21b on the shorter side are in close contact with each other. Then, refrigerated or frozen products are stored from the upper opening of the cool insulating cover 21, and the inside of the cool insulating cover is closed by closing the upper opening with the upper lid 24.

The cooling cover 21 is always connected to the container body 11 of the foldable transport container. Further, the opposite hooks 18 protruding from the transport container are provided.
Are arranged so as to coincide with the interval between the pair of connecting belts 29, and furthermore, are provided so that the front ends thereof face each other. Movement in is regulated.

For this reason, when the upper lid 24 of the cool insulating cover 21 is pulled up to the opening frame 17 of the transport container, the cool insulating cover 2
1 is held at a predetermined position in the container main body 11 of the transport container, and the cold insulation cover 21 is quickly and smoothly pulled up. In addition, the cold insulation cover 21 and the container body 11 of the transport container are provided.
Connection is performed by the engagement relationship between the connection belt 29 and the hook 18, so that the two members 1
The engaging force between the connecting belts 8 and 26 does not decrease, and the engaging relationship between the connecting belt 29 and the hook 18 is maintained. in addition,
When the cool insulating cover 21 is displaced from a predetermined position in the container body 11 of the transport container, the connecting belt 29 and the hook 18
The positional deviation can be easily corrected while maintaining the engagement relationship with.

On the other hand, the cooling cover 21 and the transport container
After taking out the refrigerated or frozen product, it is folded and stored. That is, first, the cold insulation cover 21 is
As shown in (a), the inner side wall 26 joined to the short side wall 21b is turned upward by 90 ° to be arranged in the horizontal direction. Next, while being connected to the bottom 12 of the transport container, as shown in FIG. 8B, the upper lid 24 is overlapped on the inner lid 22 and the horizontal lid 23 and joined by the hook-and-loop fastener 25. Then, the upper opening of the cool insulating cover 21 is closed. Next, as shown in FIG.
Are folded along the respective valley fold lines 30 and the mountain fold lines 31. Then, the upper and lower stoppers 27 and 28 are joined to the upper lid 24 of the folded cold insulation cover 21 and housed in the bottom 12 of the transport container as shown in FIG. 9A.

Subsequently, as shown in FIG. 9B, each short side wall 16 of the transport container is rotated from the outside of the container body 11 to the inside thereof, and then the mouth frame 17 is made to approach the bottom 12. Then, each long side wall 15 is folded inside the bottom portion 12 and the mouth frame 17. Then, as shown in FIG. 2, when the mouth frame 17 is stacked on the bottom 12 of the transport container, the container body 11 of the transport container is folded, and the folded cool insulation cover 21 is stored in the storage unit 20. Then, the foldable transport container is folded.

The effects exhibited by the above embodiment will be described below. According to the cold storage cover 21 for the foldable container of the embodiment, the inner wall 26 is rotatably hung on the upper edge of the short side wall 21b, so that the volume when the cold storage cover 21 is folded and stored is reduced. It is possible to reduce the size of the container and securely store it in the storage portion 20 of the transport container, and to exhibit a high cooling performance. Further, since no fold is formed on the inner side wall 26, the side wall 21b on the short side is prevented from being bent when the cool insulating cover 21 is used, so that the shape of the cool insulating cover 21 can be effectively prevented. It is possible to easily store refrigerated or frozen products. Further, the inner wall 26 and the side wall 21
b is joined by the hook-and-loop fastener 25, so that the entire shape of the cool insulating cover 21 can be more reliably held, and the close contact therebetween can further improve the cool insulating ability. .

According to the cold storage cover 21 for the foldable container of the embodiment, since the lower retaining member 28 is provided, the volume of the folded cold storage cover 21 can be reduced, and the container 20 for the transport container is provided. It can be reliably accommodated in the interior. Furthermore, since the lower retaining member 28 and the cold insulation cover 21 are configured to be joined by the hook-and-loop fastener 25, folding work of the cold insulation cover 21 and the like can be easily performed.

According to the cold storage cover 21 for the foldable container of the embodiment, the cold storage cover 21 and the container main body 11 of the transport container are engaged by the engagement relationship between the connecting belt 29 and the hook 18.
And are connected. Therefore, for example, even at a low temperature, the engagement force between the two members 18 and 26 does not decrease, and the cold insulation cover 21 can be reliably connected to a predetermined position in the container main body 11 of the transport container. Further, since this engaging force is stronger than the engaging force of the hook-and-loop fastener 25 between the upper cover 24 of the cool cover 21, the inner cover 22 and the side cover 23, the cool cover 21 is opened and closed when the upper cover 24 is opened and closed. Is reliably prevented from being separated from the transport container, and the opening and closing operation of the upper lid 24 can be easily performed.

According to the cold storage cover 21 for the foldable container of the embodiment, the rear surface of the inner lid 22 and the surfaces of the pair of lateral lids 23 are joined by the hook-and-loop fastener 25 so as to be adjacent at the upper ends of the side walls 21a and 21b. Side walls 21a, 21b
Since they can be fixed to each other, it is possible to effectively prevent the cold insulation cover 21 from breaking down.

The present embodiment can be embodied with the following modifications. In the foldable container cool cover 21 of the embodiment, the inner wall 26 is provided on the inner surface of the longer side wall 21a instead of the inner surface of the shorter side wall 21b.

In such a configuration, the area of the inner wall 26 covering the cool insulating cover 21 is increased, so that the cooling ability can be further improved and the shape of the cool insulating cover 21 can be prevented more effectively. be able to.

In the cold storage cover 21 for a foldable container of the embodiment, an inner wall 26 is further provided on the inner surface of the long side wall 21a. In such a configuration, the area of the inner wall 26 covering the cool insulating cover 21 increases, so that the cooling performance can be further improved and the shape of the cool insulating cover 21 can be prevented more effectively. .

In the foldable container cool insulating cover 21 of the embodiment, as shown in FIG.
An inner wall 26 is rotatably hinged to lower end edges of at least one pair of side walls 1b and the long side wall 21a, and a hook-and-loop fastener 25 is provided on an upper portion thereof.

In the case of such a configuration, the cold insulating cover 21
By first arranging the inner side wall 26 on the bottom wall of the cool insulating cover 21 when folding is performed, the subsequent folding operation can be performed more easily.

In the cold storage cover 21 for a foldable container of the embodiment, a flat plate made of, for example, a synthetic resin is disposed inside the inner wall 26 so that the inner wall 26 is hardly deformed.

In the case of such a configuration, the cold insulating cover 21
During use, the flat plate inside the inner wall 26 can prevent the side walls 21a and 21b from being deformed due to an unexpected force, so that the shape of the cool insulating cover 21 can be more effectively prevented.

The thickness of the inner wall 26 of the foldable container cool insulating cover 21 of the embodiment is increased. In the case of such a configuration, it is possible to exhibit a higher cooling performance.

In the foldable container cool insulating cover 21 of the embodiment, instead of providing at least one member of the lower locking member 28 and the upper locking member 27 on the short side wall 21 b, the inner lid 22 is replaced with the inner lid 22. It is provided on the outer surface of the formed one side wall 21a on the long side.

In the case of such a configuration, the cooling cover 21
Since the number of the at least one member of the lower locking member 28 and the upper locking member 27 provided in the cooling device 21 can be reduced, the labor required for folding the cold insulation cover 21 can be reduced and the manufacturing cost can be reduced. be able to.

In the foldable container cool cover 21 of the embodiment, at least one member of the lower locking member 28 and the upper locking member 27 is further connected to one of the long sides on which the inner lid 22 is formed. Provided on the outer surface of the side wall 21a.

In the case of such a configuration, the cooling cover 21
Can be more securely sealed, so that the cooling performance can be further enhanced. In the foldable container cool cover 21 of the embodiment, each side wall 12b, 12c of the transport container and the cool cover 2
A gap is formed between each of the side walls 21a and 21b so that the back of the hand can pass through.

In the case of such a configuration, the cold insulating cover 21
When folding, the hands are put in the gaps, and each side wall 21a, 2
By pushing in with fingers along the valley fold line 30 from the outside to the inside of 1b, the cold insulation cover 21 can be easily folded. In addition, the work of separating the cool insulating cover 21 from the transport container can be easily performed.

In the foldable container cool cover 21 of the embodiment, at least one member of the upper locking member 27 and the lower locking member 28 is omitted. In such a configuration, the folded cool insulating cover 21 can be accommodated in the accommodating portion 20 of the transport container, and the configuration can be simplified.

In the foldable container cool cover 21 of the embodiment, the height of the opening 17 provided on the container main body 11 of the transport container is made lower. When configured in this manner, the container body 11 can be reduced in weight, and the height of the container body 11, particularly when the transport container is folded, is reduced. Can be reduced in volume.

In the cold storage cover 21 for the foldable container of the embodiment, the mouth frame 17 provided on the container body 11 of the transport container is omitted. At this time, for example, the four corner portions of the mouth frame 17 are divided and formed, and each corner portion is supported on the upper end portions of the short side wall 16 and the long side wall 15.
It is preferable that the short side wall 16 and the long side wall 15 are rotatably connected via the rotation shafts 16a and 15d.

Further, the lower end of the short side wall 16 is rotatably supported with respect to the bottom 12, and the short side wall 16 and the long side wall 15 are connected at least in the upper part of the container body 11 in the use state of the transport container. In order to be able to be fixed, for example, it is preferable to have an engagement relationship at a fixed portion thereof. Alternatively, at this time, the long side walls 15 may be further formed of a single plate material 15a, and the lower end of each long side wall 15 may be rotated inside the container body 11 about the rotation shaft 15c to be folded. .

With this configuration, the weight of the container body 11 can be further reduced. Further, the container body 1
Since the height of the transport container, particularly the height when the transport container is folded, can be reduced, the volume when the transport container is folded can be reduced. Further, the configuration of the container body 11 can be simplified.

Further, a technical idea which can be grasped from the above embodiment will be described below. (1) The inner wall is used when the cool cover is used.
The cold storage cover for a foldable container according to claim 1 or 2, wherein both side edges contact with adjacent side wall sheets, and a lower end edge thereof contacts with a bottom wall sheet.

With this configuration, when the cold insulating cover is used, the inner wall comes into contact with the adjacent side wall sheets and the bottom wall sheet, and it is possible to prevent them from falling inside or outside. Deformation of the cover can be more effectively prevented. Further, since the inner wall covers the entire side wall which is in close contact with the inner wall, the cooling performance can be further improved.

(2) The cold insulation cover for a foldable container according to any one of (1), (2) and (1), wherein the inner wall is made of a hard material that is difficult to form a fold. In such a configuration, the inner wall can be joined to the side wall sheet to support it when the cool insulating cover is used, so that the shape of the cool insulating cover can be prevented.

[0060]

As described above in detail, according to the present invention, the following effects can be obtained. ADVANTAGE OF THE INVENTION According to the cold storage cover for foldable containers of Claim 1, the volume at the time of storing by folding can be reduced, it can be reliably accommodated in a foldable transport container, and exhibits a high cooling performance. can do.

According to the cold storage cover for a foldable container according to the second aspect of the present invention, in addition to the effect of the first aspect, the volume when folded and stored can be reduced reliably.
It can be more reliably accommodated in the foldable transport container.

According to the method for using the refrigerated container cooling cover according to the third aspect of the present invention, the volume when folded and stored can be reduced, and the refrigerated container can be securely stored in the foldable transport container. , Can exhibit high cooling performance.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a transport container and a cool cover.

FIG. 2 is a partially broken perspective view showing a transport container and a cool cover.

FIG. 3 is a side view showing a container body of the transport container.

FIG. 4 is a bottom view showing the container body of the transport container.

FIG. 5 is a front sectional view showing the cool insulating cover.

FIG. 6 is a bottom view showing the cool insulating cover.

FIG. 7 is an enlarged front sectional view showing a part of a hook of the transport container.

8A is a perspective view showing an unfolded cold insulating cover, FIG. 8B is a perspective view showing the cold insulating cover in a process of being folded, and FIG. 8C is a perspective view showing the cold insulating cover in a folded state.

9A is a perspective view showing a process of folding a pair of short side walls of the transport container, and FIG. 9B is a perspective view showing a process of folding a pair of long side walls of the transport container.

FIG. 10 is a front sectional view showing a cold insulating cover other than the embodiment.

[Explanation of symbols]

12: bottom part of the foldable transport container, 15: long side wall as a side wall of the foldable transport container, 16 ... short side wall as a side wall of the foldable transport container, 21 ... refrigerated cover for the foldable container, 21a ... side wall Side wall on the long side as a sheet, 21b ... Side wall on the short side as a side wall sheet, 21c
... Bottom wall as bottom wall sheet, 24 ... Top lid, 26 ... Inner side wall, 28 ... Lower locking device as locking device.

Claims (3)

[Claims] 1. A foldable transport container comprising: a bottom formed in a rectangular box shape; and a pair of opposing side walls provided on a peripheral edge of the bottom, wherein each side wall is configured to be foldable inside the bottom. A foldable container cold storage cover to be housed inside, which is formed in a rectangular box shape by a heat insulating sheet, and a bottom wall sheet,
It comprises a pair of opposed side wall sheets erected on the peripheral edge of the bottom wall sheet, and an upper lid formed to be foldable on the upper edge of these side wall sheets. For a foldable container configured to be able to fold each pair of side wall sheets facing each other inward while rotating the inner wall to the top lid side or the bottom wall sheet side while rotating the inner wall about the axis. Cool cover. 2. When a locking member is provided between the bottom wall sheet and the upper lid, and a pair of opposed side wall sheets are folded,
The cold storage cover for a foldable container according to claim 1, wherein the bottom wall sheet and the upper lid are locked by a locking tool. 3. A folding type in which each pair of opposed side wall sheets is folded inward in a state where the inner side wall of the foldable container cool insulating cover according to claim 1 or 2 is turned in a horizontal direction. How to use the cool cover for containers.