JP2005239166A - Foldable heat insulating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable heat insulating container having high heat insulating performance which is assembled in a short time. <P>SOLUTION: Four peripheral wall parts 10, 10, 13, 13, two lid parts 16, 16, and two bottom surface parts 21, 21 are formed with a vacuum heat insulating material 31 packaged inside a sheet 30. A peripheral wall part 13 adjacent to the peripheral wall part 10 continuously connected to the lid part 16 is foldable while the vacuum heat insulating material 31 is split along the folding line 23 extending in the vertical direction. When in use, the lid part 16 and the bottom surface part 21 are turned in a closed posture in a box. When not in use, the bottom surface part 21 is folded inwardly or outwardly of the peripheral wall part 10, the lid part 16 is folded opposite to the bottom surface part 21, the peripheral wall part 13 is inwardly folded along the folding line, the peripheral wall parts 10 are brought close to each other, and overlap to form a foldable heat insulating container. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a foldable cold storage container that can be folded when not in use, and is a container mainly used for cold transport.

  In recent years, with the spread of frozen foods and the like, the delivery of frozen products that require cold storage is increasing. Such delivery is generally performed by dividing into large-volume delivery from a factory of frozen goods to a wholesaler (distribution center) and small-scale delivery from a wholesaler to a supermarket or a convenience store. By the way, in small-lot delivery in which frozen goods are delivered from a wholesaler to a market, a convenience store, etc., the frozen goods are distinguished for each delivery destination and stored in a cool container.

  2. Description of the Related Art Conventionally, as a cold container, a container that uses a simple heat insulating material such as foamed polystyrene or rigid foamed urethane foam and opens and closes a lid using a chuck, a hook-and-loop fastener, or the like is often used. However, such a cold storage container has a high initial thermal conductivity of the heat insulating material and is inferior in the cold storage performance, and is also apt to be bulky in transportation and storage after delivery. For this reason, a foldable cold storage container with improved cold storage performance has been developed (see Patent Document 1).

  FIG. 9 is a perspective view showing the cold insulation container 100 disclosed in Patent Document 1. FIG. The cold insulation container 100 disclosed in Patent Document 1 includes a flexible outer bag 101 and inner bag 103 and a vacuum heat insulation panel 102.

  The outer bag 101 has a bottom surface and five side surfaces that are sewn in a substantially rectangular parallelepiped shape, and a belt 105 is hung from the side surface to the opposite side surface through the bottom surface. A lid 104 is sewn on the upper side of the outer bag 101, and a vacuum heat insulation panel (not shown) is provided in advance in the bottom of the outer bag 101 and the inside of the lid 104.

  In use, four heat insulation panels 102 are inserted along the four side surfaces of the outer bag 101, and the surface fasteners 111 of the heat insulation panel 102 are engaged with the surface fasteners 110 of the outer bag 101.

  Further, the inner bag 103 is inserted into the outer bag 101 on which the heat insulating panel 102 is mounted, and the surface fastener 112 of the inner bag 103 is engaged with the surface fastener 111 of the heat insulating panel 102 for assembly.

  The frozen bag or the like is stored in the inner bag 103 of the assembled cold storage container 100, the cover 104 is covered with the outer bag 101, and the surface fasteners 106 and 108 of the cover 104 are connected to the surface fastener 107 of the outer bag 101, Each is engaged with 109 and closed for delivery.

  Further, the cold insulation container 100 disclosed in Patent Document 1 can be folded when not in use. In other words, when not in use, the inner bag 103 and the four heat insulation panels 102 are removed from the outer bag 101 and the heat insulation panel 102 and the folded inner bag 103 removed are removed from the outer bag 101, contrary to when assembling. Store.

  Then, the outer bag 101 is folded while being overlapped with the lid portion 104 facing the bottom surface, and the belt 105 is folded over both ends of the belt 105.

In other words, the cold storage container 100 disclosed in Patent Document 1 is used for cold storage and delivery of frozen products as a box body having a heat insulation effect when used, and can be folded and transported and stored when not in use without being bulky. is there.
JP 2003-112786 A

  However, as described above, the cold storage container 100 disclosed in Patent Document 1 requires time and labor for assembly during use and folding when not in use.

  For this reason, when a large number of cold storage containers 100 are used for delivery, much work is required for assembly work before delivery and folding work after delivery, which is a factor of reducing work efficiency.

  Moreover, since the cold insulation container 100 disclosed in Patent Document 1 includes the removable heat insulation panel 102 and the inner bag 103, it is easy to lose some of the constituent members.

  In addition to the cold storage container 100 disclosed in Patent Document 1, many foldable cold storage containers have been proposed. However, many things that are easy to assemble and fold are inferior in cooling performance, and have been waiting for the development of a cooling container that has excellent cooling performance and that can be quickly assembled and folded.

  The present invention has been proposed in view of the above-described circumstances, and an object thereof is to provide a cold insulation container that has high cold insulation performance and can be assembled and folded in a short time.

  In order to achieve the above object, the foldable cold insulation container of the present invention has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each portion includes a flat vacuum heat insulating material in a sheet material. When used, the box is formed by the respective parts, and when not in use, the respective parts are stacked so that they can be folded.

  According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material.

  Moreover, the folding type cold storage container of the present invention includes two peripheral wall portions that are connected in a square shape so as to be bendable to each other, and two connected to bendable along the upper edge of the two peripheral wall portions that face each other. A lid portion of the surface, and two bottom surface portions connected to bendable along the lower edge of the two peripheral wall portions connected to the lid portion, and the peripheral wall portion, the lid portion, and the bottom surface portion are Both of the peripheral wall portions adjacent to the peripheral wall portion where the lid portion and the bottom surface portion are connected are folded in a substantially central portion extending in the height direction. The vacuum heat insulating material is divided along the line so that it can be bent. At the time of use, the lid part and the bottom part of the two surfaces are turned into a closed position and engaged with each other to form a box. Disengage the bottom part and bottom part, bend the bottom part inward of the peripheral wall part or outward of the peripheral wall part, and reverse the lid part from the bottom part A structure that can be folded by folding the lid, the peripheral wall, and the bottom part close to each other while folding the peripheral wall that can be folded inward along the folding line. It is a thing.

  According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  According to the present invention, it is possible to provide a foldable cold storage container that can be easily collected and stored by being folded when not in use, while having excellent cold storage performance.

  In addition, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

  The invention according to claim 1 proposed to achieve the above object has four peripheral wall portions, a bottom surface portion, and an openable / closable lid portion, each of which is a flat vacuum insulating sheet material. It is a foldable cold storage container that is formed so as to include a material, and forms a box by each part when in use, and can be folded by overlapping each part when not in use.

  According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material. Therefore, it is possible to provide a foldable cold storage container that can be easily collected and stored by folding it when not in use, while having excellent cold storage performance.

  According to the second aspect of the present invention, there are provided four peripheral wall portions connected in a rectangular shape so as to be bendable with each other and two surfaces connected in a bendable manner along the upper edge of the two peripheral wall portions facing each other. A lid, and two bottom surfaces connected in a foldable manner along the lower edge of the two peripheral walls connected to the cover, the peripheral wall, the lid, and the bottom being either The sheet wall material is formed by including a flat vacuum heat insulating material, and the two peripheral wall portions adjacent to the peripheral wall portion where the lid portion and the bottom surface portion are connected to each other are fold lines extending in the height direction at a substantially central portion. The vacuum heat insulating material is divided along the side wall so that it can be bent. At the time of use, the lid portion and the bottom surface portion of the two surfaces are turned into a closed posture and engaged with each other to form a box, and when not in use, the lid portion and Release the engagement of the bottom part, bend the bottom part inward of the peripheral wall part or outward of the peripheral wall part and bend the lid part in the opposite direction to the bottom part, Folding type cold insulation that is configured to be able to fold by folding the lid, peripheral wall, and bottom face together by folding the bendable peripheral wall inward along the fold line and bringing the adjacent peripheral walls close to each other It is a container.

  According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

  According to a third aspect of the present invention, in the foldable cold storage container according to the second aspect, one of the lid parts is provided with a surface fastener along a side edge engaged with the other lid part. The other lid portion is provided with a surface fastener at a portion corresponding to the engagement flap, and when the two lid portions are turned to the closed position, the side edges of both lid portions are provided. They are abutted against each other, and the engagement flap of one lid is brought into contact with the other lid to engage the surface fasteners.

  As a configuration for engaging the two lid portions, for example, a configuration can be adopted in which the two lid portions are rotated in a closed posture and the end portions are overlapped and engaged with each other. However, in this configuration, as the thickness of the lid portion increases, a step is produced between the lid portions when engaged, and a gap is created between the lid portion and the bendable peripheral wall portion. For this reason, the inside and outside of the cold insulation container communicate with each other through the gap, and the cold insulation performance is impaired.

  According to the present invention, when the lid portions on the two surfaces are turned to the closed posture, the side edge masts of both lid portions are brought into contact with each other. Thereby, even if the thickness of a cover part increases, a level | step difference does not arise between cover parts, but a clearance gap does not arise between an upper edge of a cover part and the surrounding wall part which can be bent.

  Moreover, since the engagement flap of one cover part is made to contact | abut to the other cover part and a surface fastener is engaged, the butted part of the side edge of both cover parts is covered with an engagement flap. Thereby, the abutting site | part of the side edge of a cover part can be shielded with an engagement flap, and internal / external communication can be shielded, and cold insulation performance improves.

  Further, since the engagement flap has flexibility, it is possible to easily release the engagement between the hook-and-loop fasteners by grasping a part of the engagement flap.

  The configuration of the present invention can also be applied to the bottom portion.

  By applying the configuration of the present invention to the bottom surface portion, even if the thickness of the bottom surface portion increases, no gap is formed between the peripheral wall portions that can be bent when the bottom surface ridges are engaged with each other. . Moreover, since the engagement flap of one bottom face part is made to contact | abut to the other bottom face part, and a surface fastener is engaged, the butted part of the side edge of both bottom face parts is covered with an engagement flap, and shielding property is provided. Further improvement is possible.

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

  According to a fourth aspect of the present invention, in the foldable cold storage container according to the second or third aspect, the peripheral wall portion of the two foldable surfaces has flexibility having a surface fastener along the upper edge. The engaging flap is provided in a state of being biased upward from the lateral direction, and the surface fasteners are provided on the two lid portions corresponding to the surface fasteners, and the two lid portions are closed. When it is turned, the lid part comes into contact with each other while pressing the engagement flap, and the surface fasteners are engaged with each other.

  Here, as a configuration in which the lid portions on the two surfaces are engaged in the closed posture, the configuration according to claim 3, that is, a configuration in which the side edges of the lid portions are abutted and engaged with each other by an engagement flap is adopted. Even in this case, the bendable peripheral wall portion and the lid portion only abut on the sides. For this reason, a gap is easily formed between the bendable peripheral wall portion and the lid portion, which becomes a factor that impairs the cold insulation performance.

  According to the present invention, the engagement flap is provided along the upper edge of the bendable peripheral wall portion. Therefore, when the lid portion is rotated toward the closed position, the engagement flap is inward by the inner surface of the lid portion. It is pushed down to fall down. And an engagement flap and the surface fastener of a cover part engage. Thereby, between the bendable peripheral wall part and the cover part is shielded by the engagement flap, the generation of a gap is prevented, and the cold insulation performance is improved.

  Further, according to the present invention, the engagement flap is biased upward from the lateral direction. Therefore, it is possible to naturally engage the engagement flap and the surface fasteners of the lid portion only by rotating the lid portion toward the closed posture against the urging force of the engagement flap.

  In the present invention, as a configuration for biasing the engagement flap upward from the lateral direction, for example, a material (cloth) having a restoring force is used for the engagement flap, and the engagement flap can be bent. A configuration can be adopted in which the sheet material on the upper edge of the peripheral wall portion is sewn substantially upward. According to this configuration, the engagement flap does not hang downward even when used for a long time, and it is possible to reliably engage the surface fasteners by merely rotating the lid portion toward the closed position. .

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

  According to a fifth aspect of the present invention, in the foldable cold storage container according to any one of the second to fourth aspects, when the folding is performed, the bottom surface portion is bent inward of the peripheral wall portion and the lid portion is outward of the peripheral wall portion. It is set as the structure bent, and it is set as the structure which attached the bottom sheet | seat which has the flexibility which covers the whole outer surface of the bottom face part of 2 surfaces at the time of use along the lower side edge of 4 surrounding walls.

  According to the present invention, the entire outer surface of the bottom portion is covered with the bottom sheet. As a result, when the bottom surface portions are in a closed posture, even if a gap is generated between the bottom surface portions or between the bendable peripheral wall portion and the bottom surface portion, communication between the inside and outside is blocked by the bottom surface sheet, and the cold insulation performance is improved. Not damaged.

  Moreover, even if the ice adhering to the stored frozen goods melts and the water flows inside, the bottom sheet can prevent the outflow to the outside of the cold storage container.

  Further, according to the present invention, since the bottom surface portion is folded inwardly into the peripheral wall portion and folded, the bottom sheet is not obstructed when folded, and the bottom sheet has flexibility, so that the peripheral wall is folded when folded. It can be easily stored inside the unit.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding property of the cold storage container.

  The invention according to claim 6 is the foldable cold insulation container according to any one of claims 1 to 5, wherein the vacuum heat insulating material is a sheath material having a gas barrier property made of a core material formed by compressing a fiber material. The interior covered with the covering material is decompressed and sealed in a vacuum.

  According to the present invention, the heat insulating property can be remarkably improved as compared with the conventional heat insulating material. Thereby, even when a thin vacuum heat insulating material is used, necessary cold insulation performance can be secured, and even a cold insulation container having the same internal capacity can be made compact.

  In addition, by using a material having high strength and rigidity as the jacket material, the strength and rigidity of each of the lid portion, the peripheral wall portion and the bottom surface portion formed by including the vacuum heat insulating material in the sheet material are improved. Is possible.

  Therefore, it is possible to provide a foldable cold storage container having extremely high cold storage performance.

  A seventh aspect of the present invention is the foldable cold insulation container according to any one of the first to sixth aspects, wherein the vacuum heat insulating material has a thickness of 2 mm or more and 20 mm or less.

  If the thickness of the vacuum heat insulating material is less than 2 mm, the rigidity and strength are low even when necessary cold insulation performance is obtained, and damage is likely to occur due to external force. When the thickness of the vacuum heat insulating material exceeds 20 mm, the cold insulation performance is unnecessarily improved, which becomes a factor that hinders the compactness and cost saving of the cold insulation container. A vacuum heat insulating material having a thickness in the range of 2 mm to 20 mm is preferable, and a thickness of about 10 mm is optimal from the viewpoint of cold insulation performance, compactness, and cost saving.

  Therefore, it is possible to reduce the thickness of the vacuum heat insulating material while ensuring the cold insulation performance, and it is possible to provide a foldable cold insulation container that is compact with respect to the internal volume.

  The invention according to claim 8 is the folding-type cold insulation container according to any one of claims 1 to 7, wherein the vacuum heat insulating material has an initial thermal conductivity of 0.01 W / mK or less. Has been.

  According to the present invention, the heat insulation can be remarkably improved by using a vacuum heat insulating material having a thermal conductivity (initial heat conductivity) in the above range. Therefore, it is possible to reduce the thickness of the heat insulating material, and it is possible to reduce the size of the cold insulation container while ensuring the necessary cold insulation performance.

  The thermal conductivity (initial thermal conductivity) of the vacuum heat insulating material is preferably 0.01 W / mK or less. However, when the cold insulation performance is improved or the thickness is reduced, the thermal conductivity is 0.006 W / mK or less. Desirably, 0.003 W / mK or less is optimal.

  Therefore, it is possible to reduce the thickness of the vacuum heat insulating material while ensuring the cold insulation performance, and it is possible to provide a foldable cold insulation container that is compact with respect to the internal volume.

  The invention according to claim 9 is the folding cold storage container according to any one of claims 1 to 8, wherein a regenerator having a melting point of −27 ° C. or higher and −18 ° C. or lower is accommodated therein. Has been.

  In a wholesaler or a distribution center that uses a cold storage container to deliver frozen goods in small quantities, the temperature of a freezer warehouse is usually controlled in the range of −30 ° C. to −22 ° C. in many cases.

  According to the present invention, a regenerator having a melting point of −27 ° C. or higher and −18 ° C. or lower can be stored in the freezer warehouse and solidified in accordance with the set temperature of the freezer warehouse. It can be stored in a container and kept cool.

  Therefore, the refrigeration agent can be easily solidified only by storing the regenerator in a refrigeration warehouse, and a foldable cold-reserving container with improved workability can be provided.

  The invention according to claim 10 is the foldable cold storage container according to claim 9, wherein at least 1 kg of the regenerator per 50 liters of the internal volume is stored, and the average internal temperature is 0 ° C. or less for 10 hours or more. It is set as the structure which can be hold | maintained.

  According to the present invention, a low average temperature can be maintained for a long time only by storing a cool storage agent inside a cold insulation container in accordance with the improvement of heat insulation by a vacuum heat insulating material. Thereby, it becomes possible to deliver for a long time without impairing the quality of frozen goods.

  Moreover, according to this invention, predetermined temperature can be maintained for a long time only by accommodating a small amount of cool storage agents inside a cold storage container. Thereby, compared with the case where a lot of cool storage agents are thrown in, the fall of the cold storage temperature immediately after the cool storage agent is thrown in can be suppressed, and the trouble that freezes frozen goods can be avoided. In other words, as in the prior art, after confirming that the temperature in the container has risen to some extent with the introduction of a large amount of the regenerator, there is no need for the trouble of storing the frozen product in the cold storage container.

  Therefore, by using a small amount of the cold storage agent, it is possible to provide a foldable cold storage container that can be kept cool for a long time and can be delivered for a long time without impairing the quality of the frozen product.

  The invention described in claim 11 is the folding cold-reserving container according to any one of claims 1 to 10, wherein the internal volume is 70 liters or more.

  According to the present invention, the capacity is suitable for the capacity of the frozen goods sorted for each small delivery destination, and the weight when the frozen goods are stored becomes appropriate, and the sorting work and the delivery work can be performed efficiently. It becomes possible.

  When the frozen product is stored, the weight is appropriate, and by providing an appropriate capacity for storing the sorted frozen product, it is possible to provide a foldable cold storage container that can efficiently perform the delivery operation.

  A twelfth aspect of the present invention is the folding cold storage container according to any one of the first to eleventh aspects, wherein at least one of the sheet material, the engagement flap, and the bottom sheet is made of a waterproof fabric. It is supposed to be configured.

  According to the present invention, any or all of the sheet material constituting the peripheral wall portion, the bottom surface portion, and the lid portion, the engagement flap provided on the lid portion and the peripheral wall portion, or the bottom surface sheet that covers the outer surface of the bottom surface portion. Made of waterproof fabric. This prevents water adhering to the sheet material on the inner surface of the peripheral wall portion, the bottom surface portion, or the lid portion from penetrating into the interior, and there is no dimensional change due to moisture absorption, and there is a positional shift of the enclosed vacuum heat insulating material. Does not occur. Further, the penetration of water into the engagement flap is prevented, and the durability is improved. Furthermore, it is possible to prevent the outflow of water from the cold storage container to the outside by the bottom sheet.

  In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

  Therefore, it is possible to prevent the penetration of water into each part and the outflow of water to the outside, and it is possible to provide a foldable cold storage container that is improved in durability and work efficiency.

  The invention according to claim 13 is the foldable cold storage container according to any one of claims 1 to 12, wherein the outer surface of each of the peripheral wall portion, the lid portion and the bottom portion is externally used or not used. The reinforcing structure is applied to at least one of the surfaces located on the side.

  When the cold insulation container is used, the outer surface of the four peripheral walls, the outer surface of the two lids, and the outer surface of the two bottom surfaces are located on the outside. For this reason, during delivery of frozen goods using a cold container, an external force is likely to be applied to each surface located on the outside side, and the vacuum heat insulating material is easily damaged.

  In addition, when the cold storage container is not used, the inner surface of the lid portion faces the outside when the two lid portions are bent outward from the peripheral wall portion. For this reason, an external force is easily applied to the inner surface of the lid, and the vacuum heat insulating material may be damaged.

  According to the present invention, since the reinforcement structure is applied to each surface to which these external forces are easily applied, the vacuum heat insulating material is protected and the durability is improved.

  As the reinforcing structure, for example, it is possible to adopt a configuration in which the thickness or strength of the sheet material containing the vacuum heat insulating material is increased, or a structure in which a stiff reinforcing material is inserted between the sheet material and the vacuum heat insulating material. Is possible.

  Therefore, the vacuum heat insulating material can be protected from external force when in use and when not in use, and a foldable cold insulated container with improved durability can be provided.

  The invention according to claim 14 is the foldable cold storage container according to any one of claims 1 to 13, wherein the regenerator stores the regenerator on the inner surface of at least one of the lid, the peripheral wall, and the bottom. It is the structure which provided the agent storage part.

  According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

  The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

  Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

  According to a fifteenth aspect of the present invention, in the foldable cold storage container according to any one of the first to thirteenth aspects, a flexible inner lid is provided inside the lid portion, and the inner lid is a lid It is attached along the upper edge of the peripheral wall part to which one of the parts is connected, and the length of the inner lid is equal to or longer than the length to the lower end of the inner surface of the opposing peripheral wall part.

  According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

  In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

  In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

  The invention according to claim 16 is the foldable cold storage container according to claim 15, wherein a cold storage agent storage portion for storing the cold storage agent is provided on the inner surface of at least one of the lid portion, the peripheral wall portion, the bottom surface portion and the inner lid. It is set as the provided structure.

  According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

  The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

  Moreover, in the structure which provides an inner cover inside a cold storage container, it is good to provide a cool storage agent accommodating part in the inner surface of the surrounding wall part to which an inner cover is attached. By providing the cool storage agent storage part in this part, the cool storage agent and the frozen product stored can be easily covered with the inner lid, and the cold insulation performance can be further improved.

  Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

  According to a seventeenth aspect of the present invention, in the foldable cold storage container according to any one of the second to sixteenth aspects, the two lid portions and the two bottom surface portions are respectively directed to the opposed lid portion and bottom surface portion. It is set as the structure where the length which goes is shorter than the height of a surrounding wall part.

  According to the present invention, when the cold insulation container is folded, the lid portion and the bottom surface portion do not protrude from the outer size of the peripheral wall portion. Thereby, the folding size of the cold insulation container can be made compact, and the collection and storage of the cold insulation container becomes easy.

  Therefore, a foldable cold storage container that can be folded compactly can be provided.

  The invention described in claim 18 is a foldable cold storage container according to any one of claims 1 to 17, further comprising a protective container that houses the foldable cold storage container, and the protective container includes a box body when in use. The folded refrigerated container is accommodated, and a plurality of foldable chilled containers folded when not in use can be accommodated.

  The cold storage container of the present invention can obtain the strength and rigidity of the cold storage container alone by using a vacuum heat insulating material having predetermined strength and rigidity. However, there is a risk that an excessive external force is applied to the cold storage container during delivery. In addition, when the cool containers are stacked in multiple stages during delivery, the strength may be insufficient.

  According to the present invention, by storing the cold storage container in the protective container, no external force is directly applied to the cold storage container, and damage to the cold storage container is prevented.

  Further, even when the cold storage containers are stored in the protective containers and stacked in multiple stages, the weight on the upper side is supported by the protective containers, and no load is directly applied to the cold storage containers. Thereby, it is possible to prevent breakage of the cold container. In this case, working efficiency such as loading can be further improved by adopting a structure in which the protective containers are stacked and engaged.

  Moreover, according to this invention, the several cold storage container folded at the time of non-use can be accommodated in the inside of a protective container, and collection | recovery and storage of a cold storage container can be performed efficiently.

  The protective container is lightweight and can be provided with sufficient strength and rigidity by being made of a synthetic resin molded product or the like. Further, by making the protective container foldable, collection after delivery can be easily performed, and storage space is also reduced.

  Therefore, it is possible to reduce the external force applied to the foldable cool container and improve the durability, and to easily carry and store the foldable cool container.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view showing a foldable cold insulation container 1 according to the present embodiment, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a state in which a lid portion of the cold insulation container 1 in FIG. 4 is a sectional view taken in the direction of arrow C in FIG. 3, FIG. 5 is a sectional view taken in the direction of arrow EE in FIG. 3, and FIG. 6 is a sectional view taken in the direction of arrow BB in FIG. Sectional drawing which shows the state which cancelled | released, FIG.7 (a)-(e) is a perspective view which shows the procedure which folds the cold storage container 1 of FIG. 8A is a perspective view showing a state in which the cold insulation container 1 of FIG. 1 is housed in a protective container, and FIGS. 8B and 8C show the cold insulation container 1 folded when not in use as a protective container. It is a perspective view which shows the state to accommodate.

  The foldable cold storage container 1 of the present embodiment is a foldable cold storage container that is a box when in use and can be folded when not in use.

  As shown in FIG. 1, the cold insulation container 1 of the present embodiment includes four peripheral wall portions 10, 10, 13, and 13 that are connected to each other in a square shape so that they can be bent, and two opposing peripheral wall portions 10, 10, two lids 16, 16 connected to bendable along the upper edges 11, 11, and a lower edge 12 of the two peripheral walls 10, 10 connected to the lids 16, 16. , 12 and two bottom surfaces 21 and 21 connected to each other so as to be bendable.

  In the present embodiment, the cover portion 16 has a length toward the facing cover portion 16, that is, a length L from the upper edge 11 of the peripheral wall portion 10 to the side edge 17 of the cover portion 16, and the peripheral wall portion 13. The lid portions 6 and 16 on the two surfaces have the same shape. Further, the bottom surface portions 21 and 21 of the two surfaces have the same shape as the lid portion 16. Further, the length L of the lid portion 16 is shorter than the height H of the peripheral wall portion 10.

  Specifically, as shown in FIG. 1, the cold insulation container 1 of the present embodiment has a width W of 600 mm, a depth D of 400 mm, and a height H of 300 mm, and the length L of the lid portion 16 is substantially the same. The configuration is 200 mm and shorter than the height H. The internal volume of the cold container 1 is approximately 70 liters.

  As shown in FIG. 2, the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 are all formed by including a flat vacuum heat insulating material 31 in a sheet material 30.

  As shown in FIG. 2, the vacuum heat insulating material 31 covers a core material 32 made of at least one of a fiber material, a resin foam material, and a granular material with an outer covering material 33 having a gas barrier property. It is a heat insulating material formed by decompressing the inside and vacuum-sealing it.

  In the present embodiment, a laminate film formed by laminating a heat welding layer and a protective layer on the inside and outside of the gas barrier layer is used as the covering material 33. That is, the covering material 33 is a metal foil such as aluminum, or a metal or non-oxide deposited film as a gas barrier layer, and a film such as unstretched polypropylene is used as a heat welding layer on the inner surface side of the gas barrier layer. In addition to being laminated, a laminate film in which a film such as nylon or polyethylene terephthalate is laminated as a protective layer on the outer surface side of the gas barrier layer. Moreover, the core material 32 used what heat-molded the fiber material using the binder.

  In the present embodiment, the vacuum heat insulating material 31 having such a configuration, which has a thermal conductivity (initial thermal conductivity) of 0.005 W / mK and a thickness of about 10 mm, is used. Thereby, while ensuring the high heat insulation in the surrounding wall part 10, the cover part 16, and the bottom face part 21, the said part is aimed at thickness reduction.

  The sheet material 30 is formed by sewing a polyester fabric with a synthetic resin coat on the back surface, and has water resistance, waterproofness and flexibility.

  In the present embodiment, a sheet having a thickness of 4 mm is provided on the outer wall surface of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 when the cold insulation container 1 is used or not used, as shown in FIG. A material 30a is used, and a sheet material 30b having a thickness of 2 mm is used on the other surface.

  In other words, each of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 of the cold insulation container 1 has the vacuum heat insulating material 31 inside the sheet material 30 sewn in a bag shape having water resistance, waterproofness, and flexibility. It is an enclosed structure. The peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 can be bent by connecting the side edges of the sheet material 30 to each other by sewing.

  Further, as shown in FIG. 1, the two peripheral wall portions 13, 13 adjacent to the peripheral wall portions 10, 10 connected to the lid portion 16 and the bottom surface portion 21 are formed by folding lines 23 extending in the height direction substantially at the center portion. The vacuum heat insulating material is divided along the folding line 23, and the peripheral wall portion 13 can be bent along the folding line 23.

  That is, the peripheral wall portion 13 is formed by storing the two vacuum heat insulating materials 31 and 31 inside the sheet material 30 sewn in a bag shape and sewing the sheet material 30 along the fold line 23. It is possible to bend along the line 23.

  As shown in FIGS. 1 and 3, one lid portion 16 is provided with a flexible engagement flap 18 having a surface fastener 18 a along the side edge 17, and the other lid portion 16 has A hook-and-loop fastener 20 is provided so as to correspond to the engagement flap 18 of one lid portion 16. The engagement flap 18 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing the surface fastener 18a on the sheet material 30b.

  As shown in FIGS. 1 and 3, a flexible engagement flap 24 having a surface fastener 24 a is provided substantially upward along the upper edge 14 on the two peripheral wall portions 13 that can be bent. It is attached by sewing in a state of being biased toward. The engagement flap 24 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 24a on the sheet material 30b.

  Further, surface fasteners 19, 19 are provided on the inner surfaces of the two lid portions 16, 16 so as to correspond to the surface fasteners 24 a of the engagement flap 24.

  The bottom surface portion 21 has the same basic structure as the lid portion 16. That is, as shown in FIGS. 1 and 6, one bottom surface portion 21 is provided with a flexible engagement flap 22 having a surface fastener 22 a along a side edge 29. In addition, a hook-and-loop fastener 28 is provided on the other bottom surface portion 21 so as to correspond to the engagement flap 22 of the one bottom surface portion 21. The engagement flap 22 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 22a on the sheet material 30b.

  As shown in FIGS. 1 and 6, on the outer surface side of the bottom surface portion 21, a flexible bottom sheet 27 that covers the entire outer surface is provided. In other words, the bottom sheet 27 is a rectangular sheet that is substantially equal to the outer shape of the two bottom surface portions 21, and its four sides are sewn along the lower edges 12 and 15 of the peripheral wall portions 10 and 13 and attached. It has been. In the present embodiment, the sheet material 30b (thickness 2 mm, see FIG. 2) is used for the bottom sheet 27 as well.

  An inner lid 25 is provided inside the cold insulation container 1. The inner lid 25 is a rectangular sheet material having flexibility. As shown in FIGS. 1 and 5, one side of the inner lid 25 is attached by sewing along the upper edge 11 of the peripheral wall portion 10 to which the lid portion 16 is connected. It has been. The inner lid 25 is a shielding material for assisting the shielding by the lid portion 16.

  In the present embodiment, the inner lid 25 has a width substantially equal to the width W of the cold container 1 as shown in FIG. 1, and the length is the length to the opposing peripheral wall portions 10 as shown in FIG. 5. The sum of the height D and the height H of the peripheral wall 10 is greater than or equal to the sum. By setting the inner lid 25 to this size, as shown in FIG. 5, even when the frozen products S1 to S4 are stored in a part of the inside of the cold insulation container 1 and a gap is generated, all of the frozen products S1 to S4 are removed. It can be covered with the inner lid 25, and the shielding effect is increased.

  In addition, a regenerator mosquito delivery unit 26 for storing a regenerator is provided inside the cold insulation container 1. The cool storage agent storage section 26 is a bag formed using a mesh net material as shown in FIGS. 1 and 5, and the cool storage agent 34 can be stored therein as shown in FIG. 5. In the present embodiment, the regenerator storage portion 26 is provided on the inner surface of the peripheral wall portion 10 to which the inner lid 25 is connected. Thereby, the cool storage agent 34 and frozen goods S1-S4 can be easily covered with the inner cover 25, and the cold preservation performance and shielding property of frozen goods S11-S4 are aimed at.

  In addition, the cool storage agent storage part 26 can be provided not only on the inner surface of the peripheral wall part 10 but also on the inner surfaces of the peripheral wall part 13 and the lid part 16.

  In the present embodiment, the cool storage agent storage unit 26 can store two cool storage agents 34 having a melting point of −27 ° C. to −18 ° C. and a weight of 1 kg. Moreover, the cool storage agent 34 used in this embodiment is “CAH-1001 minus 25 ° C. grade” manufactured by Inoac Corporation.

  Next, an assembling procedure at the time of using the cold insulating container 1 of the present embodiment will be described.

  First, as shown in FIG. 6, the bottom surface portions 21 and 21 are rotated to the closed posture (horizontal direction), and the side edges 29 and 29 are brought into contact with each other as shown in FIG. Then, the engagement flap 22 provided on one bottom surface portion 21 is pressed against the other bottom surface portion 21 so that the surface fastener 22a of the engagement flap 22 and the surface fastener 28 of the other bottom surface portion 21 are engaged with each other.

  When the bottom surface portions 21 and 21 are engaged in this way, a substantially flat surface is formed by both bottom surface portions 21 as shown in FIG. 5, and the bottom sheet 27 is positioned below the bottom surfaces 21 and 21 so as to cover the entire surface. To do. Therefore, even when a slight gap occurs between the bottom surface portion 21 and the peripheral wall portion 13, the bottom surface sheet 27 blocks the communication between the inside and the outside, and the cold insulation performance is not impaired.

  In the present embodiment, the bottom sheet 27 is made of a water-resistant and waterproof sheet material 30b to prevent water staying inside from flowing out of the container.

  Next, as shown in FIG. 5, the cold storage agent 34 is stored in the cold storage agent storage unit 26 as necessary, and frozen products S1 to S4 such as frozen food to be delivered are stored inside, and the frozen product S1 is stored. Put the inner lid 25 to cover ~ S4.

  Here, in the present embodiment, the regenerator 34 having a melting point of −27 ° C. or higher and −18 ° C. or lower is used. Usually, in a wholesaler or a distribution center that delivers small roe, the temperature of a freezer warehouse is often controlled to about −30 ° C. to −22 ° C. Therefore, the cool storage agent 34 having the melting point in the above range is used so that the cool storage agent 34 can be solidified only by storing in the freezer warehouse. Thereby, at the time of delivery, it becomes possible to immediately store the refrigerating agent stored in the refrigeration warehouse and solidified in the cold insulation container 1 for cold preservation.

  When all the frozen products S1 to S4 to be stored are stored, the lid portions 16 and 16 are rotated to the closed posture (substantially horizontal direction). As shown in FIG. 3, when the lid portions 16 and 16 are turned inward, the engagement flap 24 provided on the peripheral wall portion 13 substantially upward is pressed by the turning of the lid portion 16 to be The hook-and-loop fastener 24a of the engagement flap 24 and the hook-and-loop fastener 19 of the lid 16 are engaged with each other.

  When both the lid portions 16 and 16 are moved to the closed posture, the entire surface fastener 24a of the engagement flap 24 is engaged with the surface fastener 19 of the lid portion 16, and the gap between the lid portion 16 and the peripheral wall portion 13 is established. It is shielded by the engagement flap 24.

  Moreover, when the cover parts 16 and 16 are moved to a closed position, the side edges 17 and 17 of the cover parts 16 and 16 will face each other like FIG. Finally, the engagement flap 18 provided on one lid 16 is pressed against the other lid 16 to engage the surface fasteners 18a and 20 with each other. Thereby, the abutting part of the side edges 17 and 17 of the lid parts 16 and 16 is covered with the engagement flap 18.

  In other words, the cold insulation container 1 of the present embodiment can be obtained by simply rotating the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture and engaging them with the engagement flaps 22 and 18 as shown in FIG. As described above, a box surrounded by the peripheral wall portions 10 and 13, the bottom surface portion 21, and the lid portion 16 including the vacuum heat insulating material 31 is formed.

  As shown in FIG. 5, the formed box is covered with the engagement flap 22 at the abutting portion between the side edges 29 and 29 of the bottom surface portions 21 and 21, and the outer surface of the bottom surface portion 21 is the bottom sheet 27. Covered. Further, as shown in FIG. 4, the abutting portions of the lid portions 16 and 16 are covered with the engagement flap 18, and the gap between the lid portion 16 and the peripheral wall portion 13 is shielded by the engagement flap 24.

  As described above, the cold insulation container 1 according to the present embodiment is assembled by moving the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture, and the communication between the inside and the outside is completely blocked, and the entire surface is vacuum insulated. It is possible to immediately form a box body surrounded by materials and having a very high heat insulating property.

  In the present embodiment, by storing one cold storage agent having a melting point of −27 ° C. or more and −18 ° C. or less per 50 liters inside the cold insulation container 1, the average temperature of the atmosphere inside the cold insulation container 1 is set. It can be maintained at 0 ° C. or lower continuously for 10 hours or longer, and can be maintained at about −15 ° C. continuously for 10 hours or longer if replaced with the product temperature of a frozen product (for example, ice cream). Therefore, by delivering the cold storage container 1 in combination with the cold storage agent according to the present embodiment, it is possible to maintain the frozen product at a low temperature and perform long-distance delivery without damaging the quality. In addition, you may substitute at least one part of a cool storage agent with dry ice.

  Next, the folding procedure of the cold insulation container 1 when not in use will be described.

  The cold storage container 1 is folded, for example, when the cold storage container 1 is emptied after delivery or when the cold storage container 1 is stored and returned to the delivery source. In the following description of the folding procedure, it is assumed that the cool storage agent 34 stored in the cool storage agent storage unit 26 has been taken out.

  At the time of folding, first, as shown in FIG. 7A, the engagement flap 24 of the lid portion 16 of the cold insulation container 1 which is a box is grasped and pulled up. 7B, the engagement of the surface fastener 18a of the engagement flap 18 and the surface fastener 20 of the lid portion 16, and the engagement of the surface fastener 24a of the engagement flap 24 and the surface fastener 19 of the lid portion 16. The lids 16 and 16 are rotated to the open posture while releasing the engagement.

  Next, as shown in FIGS. 6 and 7 (c), the inner lid 25 is moved toward the cool storage agent storage portion 26, and the engagement flap 22 of the bottom surface portion 21 is grasped and pulled up. The engagement of the surface fasteners 28 of the bottom surface portion 21 is released, and the bottom surface portions 21 and 21 are folded over the inner surfaces of the peripheral wall portions 10 and 10 and the lid portions 16 and 16 are connected to the peripheral wall as shown in FIG. Fold over the outer surface of the parts 10, 10.

  Subsequently, as shown in FIG. 7D, the peripheral wall portions 10 are brought close to each other while being bent inward along the fold line 23. As a result, as shown in FIG. 7E, the four surfaces of the lid portion 16, the peripheral wall portion 10, the bottom surface portion 21, and the bent peripheral wall portion 13 are overlapped in order from the outside, and all eight surfaces overlap. Folding is completed in the state.

  As described above, the cold insulation container 1 of the present embodiment can be folded very easily and compactly in a short time without attaching / detaching a member such as a heat insulating panel as in the prior art.

  When the cold insulation container 1 is folded, as shown in FIG. 7E, a total of eight surfaces of the lid portions 16 and 16, the peripheral wall portions 10 and 10, the bottom surface portions 21 and 21 and the peripheral wall portions 13 and 13 are folded. Become.

  Further, as described above, in the present embodiment, the length L (200 mm) of the lid portion 16 and the bottom surface portion 21 is shorter than the height H (300 mm) of the peripheral wall portions 10 and 13. Thereby, when the cold insulation container 1 is folded, it becomes a shape in which the eight surfaces are overlapped with the peripheral wall portion 10 as the maximum outer dimension.

  Further, the cold insulation container 1 of FIG. 1 uses the thick sheet material 30a shown in FIG. 2 for all surfaces located on the outside side when in use or not in use. That is, the thick sheet material 30a shown in FIG. 2 is employed on the outer surface side of the peripheral wall portion 10, the peripheral wall portion 13, and the bottom surface portion 21, and on the inner surface and outer surface side of the lid portion 16, respectively.

  More specifically, the lid portion 16 has a thickness of 18 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thickness (4 mm + 4 mm) of the sheet material 30a that encloses it. The peripheral wall portions 10 and 13 have a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Further, the bottom surface portion 21 has a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Therefore, when the eight surfaces are folded and overlapped, the total thickness becomes approximately 132 mm.

  In other words, when the cold insulation container 1 of the present embodiment is folded, the outer dimension (W600 mm × H300 mm) of the peripheral wall portion 10 can be the maximum outer dimension, and the thickness can be reduced to approximately 84 mm. Compared to this, it can be made extremely compact. Thereby, it is also possible to store a plurality of folded cold insulation containers 1 in a general-purpose roll pallet or the like and easily move them.

  Further, as described above, the thick sheet material 30a is used for all the surfaces positioned on the outside side when in use or not in use.

  Accordingly, when the box is formed in use, the vacuum heat insulating material 31 included in each surface is protected from external force by the thick sheet material 30a. When folded when not in use, the inner surface of the lid portion 16 is protected from external force by the thick sheet material 30a. Due to the fins, the vacuum heat insulating material 31 can be protected from external force both during use and when it is not used, and the vacuum heat insulating material 31 can be prevented from being damaged and durability can be improved.

  Here, as described above, the cold insulation container 1 of the present embodiment is formed by the lid portion 16, the peripheral wall portions 10 and 13 and the bottom surface portion 21 including the vacuum heat insulating material 31 having predetermined strength and rigidity. Therefore, even when the cold container 1 is used alone, a certain degree of strength and rigidity can be obtained. However, the durability of the cold insulation container 1 can be remarkably improved by storing the cold insulation container 1 in a protective container having higher strength and rigidity and using it as a set.

  For example, as shown in FIG. 8 (a), it is possible to prepare a protective container 2 that can completely store the cold insulating container 1, and to store the cold insulating container 1 that is a box at the time of delivery and use it as a set. .

  The protective container 2 shown in FIG. 8 (a) is manufactured by molding a synthetic resin material, has a box shape with the top opened, and is extremely lightweight. The protective container 2 is formed with flange portions 2a and 2b by projecting the outer surfaces of the upper and lower portions over the entire circumference. Therefore, the protective container 2 can be easily carried using the flange portion 2a as a clue. In addition, the lids 16 and 16 can be opened and closed by grasping the engagement flap 18 while the cold container 1 is stored in the protective container 2.

  In addition, the flange portion 2b of the protective container 2 is overlapped with the flange portion 2a of another protective container 2 and can be engaged, and the protective containers 2 can be stacked in multiple stages. Therefore, even when a large number of protective containers 2 containing the cold storage containers 1 are loaded on a delivery vehicle, the loading space can be effectively used by stacking them in multiple stages, and an excessive load is not directly applied to the cold storage containers 1. There is no damage.

  Thus, by using the cold insulation container 1 as a set with the protective container 2 reduced in weight, the durability of the cold insulation container can be remarkably improved.

  Furthermore, as shown in FIG.7 (e), the cold insulation container 1 can be folded in the shape where eight surfaces were piled up by making the surrounding wall part 10 into the largest outer dimension. Accordingly, as shown in FIGS. 8B and 8C, a plurality of folded cold storage containers 1... Can be stored in one protective container 2.

  As a result, a plurality of cold storage containers 1 can be collectively stored in the protective container 2 and easily carried, and preparation work and collection work for delivery can be performed efficiently. In addition, a plurality of cold storage containers 1 can be arranged and stored in the protective container 2, and the storage space can be reduced.

  Although the protective container 2 shown in FIG. 8 has been described as being formed in a box shape, the protective container 2 can be folded to facilitate carrying the protective container 2 during preparation and collection. The storage space can also be reduced.

  The foldable cold storage container of the present invention is suitable for uses such as cold transport of frozen goods because it can be easily collected and stored when not in use, while having excellent cold storage performance.

The perspective view which shows the folding-type cold storage container which concerns on embodiment of this invention AA arrow sectional view of FIG. The perspective view which shows the state which closes the cover part of the cold storage container of FIG. C direction arrow view of FIG. EE arrow cross-sectional view of FIG. Sectional drawing which shows the state which canceled the engagement of the bottom face part in the BB arrow sectional drawing of FIG. (A)-(e) is a perspective view which shows the procedure which folds the cold storage container of FIG. (A) is a perspective view which shows the state which accommodated the cold storage container of FIG. 1 in the protection container, (b), (c) is a perspective view which shows the process in which the folded cold storage container is accommodated in a protection container. The perspective view which shows the conventional cold storage container

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding type cold storage container 2 Protective container 10,13 Peripheral wall part 11,14 Upper edge 12,15 Lower edge 16 Lid part 17 Side edge 18 Engagement flap 18a Surface fastener 19 Surface fastener 20 Surface fastener 21 Bottom surface part 23 Folding line 24 Engagement flap 24a Surface fastener 25 Inner lid 26 Coolant storage part 27 Bottom sheet 30 Sheet material 31 Vacuum heat insulating material 32 Core material 33 Cover material 34 Coolant

  The present invention relates to a foldable cold storage container that can be folded when not in use, and is a container mainly used for cold transport.

  In recent years, with the spread of frozen foods and the like, the delivery of frozen products that require cold storage is increasing. Such delivery is generally performed by dividing into large-volume delivery from a factory of frozen goods to a wholesaler (distribution center) and small-scale delivery from a wholesaler to a supermarket or a convenience store. By the way, in small-lot delivery in which frozen goods are delivered from a wholesaler to a market, a convenience store, etc., the frozen goods are distinguished for each delivery destination and stored in a cool container.

  2. Description of the Related Art Conventionally, as a cold container, a container that uses a simple heat insulating material such as foamed polystyrene or rigid foamed urethane foam and opens and closes a lid using a chuck, a hook-and-loop fastener, or the like is often used. However, such a cold storage container has a high initial thermal conductivity of the heat insulating material and is inferior in the cold storage performance, and is also apt to be bulky in transportation and storage after delivery. For this reason, a foldable cold storage container with improved cold storage performance has been developed (see Patent Document 1).

  FIG. 9 is a perspective view showing the cold insulation container 100 disclosed in Patent Document 1. FIG. The cold insulation container 100 disclosed in Patent Document 1 includes a flexible outer bag 101 and inner bag 103 and a vacuum heat insulation panel 102.

  The outer bag 101 has a bottom surface and five side surfaces that are sewn in a substantially rectangular parallelepiped shape, and a belt 105 is hung from the side surface to the opposite side surface through the bottom surface. A lid 104 is sewn on the upper side of the outer bag 101, and a vacuum heat insulation panel (not shown) is provided in advance in the bottom of the outer bag 101 and the inside of the lid 104.

  In use, four heat insulation panels 102 are inserted along the four side surfaces of the outer bag 101, and the surface fasteners 111 of the heat insulation panel 102 are engaged with the surface fasteners 110 of the outer bag 101.

  Further, the inner bag 103 is inserted into the outer bag 101 on which the heat insulating panel 102 is mounted, and the surface fastener 112 of the inner bag 103 is engaged with the surface fastener 111 of the heat insulating panel 102 for assembly.

  The frozen bag or the like is stored in the inner bag 103 of the assembled cold storage container 100, the cover 104 is covered with the outer bag 101, and the surface fasteners 106 and 108 of the cover 104 are connected to the surface fastener 107 of the outer bag 101, Each is engaged with 109 and closed for delivery.

  Further, the cold insulation container 100 disclosed in Patent Document 1 can be folded when not in use. In other words, when not in use, the inner bag 103 and the four heat insulation panels 102 are removed from the outer bag 101 and the heat insulation panel 102 and the folded inner bag 103 removed are removed from the outer bag 101, contrary to when assembling. Store.

  Then, the outer bag 101 is folded while being overlapped with the lid portion 104 facing the bottom surface, and the belt 105 is folded over both ends of the belt 105.

In other words, the cold storage container 100 disclosed in Patent Document 1 is used for cold storage and delivery of frozen products as a box body having a heat insulation effect when used, and can be folded and transported and stored when not in use without being bulky. is there.
JP 2003-112786 A

  However, as described above, the cold storage container 100 disclosed in Patent Document 1 requires time and labor for assembly during use and folding when not in use.

  For this reason, when a large number of cold storage containers 100 are used for delivery, much work is required for assembly work before delivery and folding work after delivery, which is a factor of reducing work efficiency.

  Moreover, since the cold insulation container 100 disclosed in Patent Document 1 includes the removable heat insulation panel 102 and the inner bag 103, it is easy to lose some of the constituent members.

  In addition to the cold storage container 100 disclosed in Patent Document 1, many foldable cold storage containers have been proposed. However, many things that are easy to assemble and fold are inferior in cooling performance, and have been waiting for the development of a cooling container that has excellent cooling performance and that can be quickly assembled and folded.

  The present invention has been proposed in view of the above-described circumstances, and an object thereof is to provide a cold insulation container that has high cold insulation performance and can be assembled and folded in a short time.

  In order to achieve the above object, the foldable cold insulation container of the present invention has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each portion includes a flat vacuum heat insulating material in a sheet material. When used, the box is formed by the respective parts, and when not in use, the respective parts are stacked so that they can be folded.

  According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material.

Further, collapsible cold container of the present invention, a lid which is articulated so as to be bent along the bendable in the peripheral wall of the four sides that are connected in a square shape, the upper edge of the peripheral wall portion to each other, the circumferential and a bottom surface portion that is connected so as to be bent along the lower edge of the wall portion, the peripheral wall portion, the lid portion and the bottom portion are both formed by enclosing a flat vacuum insulation material to the sheet material, The two opposing peripheral wall portions adjacent to the connected peripheral wall portions of the lid portion and the bottom surface portion are divided along the fold line by dividing the vacuum heat insulating material along a fold line extending in the height direction at a substantially central portion. The peripheral wall portion can be bent, and the peripheral wall portion, the lid portion, and the bottom surface portion can be assembled into a box or folded and overlapped with the vacuum heat insulating material included and connected. can, in use, the box body is engaged engagement to rotate the lid and bottom portions closed position , When not in use, to release the engagement of the lid and bottom part, and bent the lid to the peripheral wall portion side or peripheral wall outer side while folding the bottom portion to the peripheral wall portion side or peripheral wall outer side, folding The bendable peripheral wall portion is folded inward along the fold line, the adjacent peripheral wall portions are brought close to each other, and the lid portion, the peripheral wall portion, and the bottom surface portion are overlapped to be foldable.

According to the present invention, the peripheral wall of the four sides, all of the lid and the bottom surface portion, because it is formed by enclosing the vacuum insulation material to the sheet material, higher cold performance is expressed. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  According to the present invention, it is possible to provide a foldable cold storage container that can be easily collected and stored by being folded when not in use, while having excellent cold storage performance.

  In addition, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

In order to achieve the above object, the invention according to claim 1 is characterized in that a peripheral wall portion of four surfaces connected in a rectangular shape so as to be bent with respect to each other, and a continuous connection so as to be bent along an upper edge of the peripheral wall portion. And a bottom part connected to bendable along the lower edge of the peripheral wall part, and the peripheral wall part, the cover part, and the bottom part are all flat sheet-like vacuum heat insulating materials. The two peripheral wall portions adjacent to the connected peripheral wall portion of the lid portion and the bottom surface portion are divided into vacuum insulating materials along a fold line extending in the height direction at a substantially central portion. The peripheral wall portion can be bent along the fold line, and the peripheral wall portion, the lid portion, and the bottom surface portion are assembled and formed into a box body in a state where the vacuum heat insulating material is contained and connected. or, folded and causes it-superimposable, in use, close the lid and bottom portion Said lid together is engaged engagement pivots energized is a box, when not in use, to release the engagement of the lid and bottom part, for folding the bottom portion to the peripheral wall portion side or peripheral wall outer side The peripheral wall portion is bent inwardly or outwardly of the peripheral wall portion, and the peripheral wall portions adjacent to each other are brought close to each other while bending the peripheral wall portion that can be bent inwardly along a fold line. This is a foldable cold storage container that is configured to be foldable by overlapping the top and bottom portions .

According to the present invention, since all of the four peripheral wall portions, the lid portion, and the bottom surface portion are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited. Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use .

According to the second aspect of the present invention, there are provided four peripheral wall portions connected in a rectangular shape so as to be bendable with each other and two surfaces connected in a bendable manner along the upper edge of the two peripheral wall portions facing each other. A lid, and two bottom surfaces connected in a foldable manner along the lower edge of the two peripheral walls connected to the cover, the peripheral wall, the lid, and the bottom being either The sheet wall material is formed by including a flat vacuum heat insulating material, and the two peripheral wall portions adjacent to the peripheral wall portion where the lid portion and the bottom surface portion are connected to each other are fold lines extending in the height direction at a substantially central portion. The vacuum heat insulating material is divided along the folding line so that it can be bent, and the peripheral wall portion, the lid portion, and the bottom surface portion include the vacuum heat insulating material and are assembled and assembled. or a box body, folded and causes it-superimposable, in use, the lid portion of the second surface and turn the bottom portion to the closed position And is a box body is engaged with each other, when not in use, to release the engagement of the lid and bottom portion, the peripheral wall portion side of the lid portion while bending the bottom portion to the peripheral wall portion side or peripheral wall outer side or Bending the peripheral wall part outward, folding the peripheral wall part that can be folded inward along the fold line, bringing adjacent peripheral wall parts close to each other, and overlapping the cover part, peripheral wall part, and bottom part This is a foldable cold storage container configured to be foldable.

  According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

  According to a third aspect of the present invention, in the foldable cold storage container according to the second aspect, one of the lid parts is provided with a surface fastener along a side edge engaged with the other lid part. The other lid portion is provided with a surface fastener at a portion corresponding to the engagement flap, and when the two lid portions are turned to the closed position, the side edges of both lid portions are provided. They are abutted against each other, and the engagement flap of one lid is brought into contact with the other lid to engage the surface fasteners.

As a configuration for engaging the two lid portions, for example, a configuration can be adopted in which the two lid portions are rotated in a closed posture and the end portions are overlapped and engaged with each other. However, in this configuration, as the thickness of the lid portion increases, a step is produced between the lid portions when engaged, and a gap is created between the lid portion and the bendable peripheral wall portion. Therefore, communication is out of cold container via the inter-gap, the cold performance is impaired.

  According to the present invention, when the lid portions on the two surfaces are turned to the closed posture, the side edge masts of both lid portions are brought into contact with each other. Thereby, even if the thickness of a cover part increases, a level | step difference does not arise between cover parts, but a clearance gap does not arise between an upper edge of a cover part and the surrounding wall part which can be bent.

  Moreover, since the engagement flap of one cover part is made to contact | abut to the other cover part and a surface fastener is engaged, the butted part of the side edge of both cover parts is covered with an engagement flap. Thereby, the abutting site | part of the side edge of a cover part can be shielded with an engagement flap, and internal / external communication can be shielded, and cold insulation performance improves.

  Further, since the engagement flap has flexibility, it is possible to easily release the engagement between the hook-and-loop fasteners by grasping a part of the engagement flap.

  The configuration of the present invention can also be applied to the bottom portion.

By applying the configuration of the present invention to the bottom surface portion, even if the thickness of the bottom surface portion increases, no gap is formed between the peripheral wall portions that can be bent when the bottom surface portions are engaged with each other. . Moreover, since the engagement flap of one bottom face part is made to contact | abut to the other bottom face part, and a surface fastener is engaged, the butted part of the side edge of both bottom face parts is covered with an engagement flap, and shielding property is provided. Further improvement is possible.

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

  According to a fourth aspect of the present invention, in the foldable cold storage container according to the second or third aspect, the peripheral wall portion of the two foldable surfaces has flexibility having a surface fastener along the upper edge. The engaging flap is provided in a state of being biased upward from the lateral direction, and the surface fasteners are provided on the two lid portions corresponding to the surface fasteners, and the two lid portions are closed. When it is turned, the lid part comes into contact with each other while pressing the engagement flap, and the surface fasteners are engaged with each other.

  Here, as a configuration in which the lid portions on the two surfaces are engaged in the closed posture, the configuration according to claim 3, that is, a configuration in which the side edges of the lid portions are abutted and engaged with each other by an engagement flap is adopted. Even in this case, the bendable peripheral wall portion and the lid portion only abut on the sides. For this reason, a gap is easily formed between the bendable peripheral wall portion and the lid portion, which becomes a factor that impairs the cold insulation performance.

  According to the present invention, the engagement flap is provided along the upper edge of the bendable peripheral wall portion. Therefore, when the lid portion is rotated toward the closed position, the engagement flap is inward by the inner surface of the lid portion. It is pushed down to fall down. And an engagement flap and the surface fastener of a cover part engage. Thereby, between the bendable peripheral wall part and the cover part is shielded by the engagement flap, the generation of a gap is prevented, and the cold insulation performance is improved.

  Further, according to the present invention, the engagement flap is biased upward from the lateral direction. Therefore, it is possible to naturally engage the engagement flap and the surface fasteners of the lid portion only by rotating the lid portion toward the closed posture against the urging force of the engagement flap.

In the present invention, as a configuration for biasing the engagement flap upward from the lateral direction, for example, a material (cloth) having a restoring force is used for the engagement flap, and the engagement flap can be bent. A configuration can be adopted in which the sheet material on the upper edge of the peripheral wall portion is sewn substantially upward. According to this configuration, the engagement flaps without hanging downward, it is possible to securely engaged the fastener together by simply rotating toward the lid to the closed position by the use of inter-long .

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

According to a fifth aspect of the present invention, in the foldable cold storage container according to the third or fourth aspect, the engagement flap is made of a waterproof fabric.

According to the present invention, the engagement flap is made of a waterproof fabric. Thereby, it is prevented that water penetrates into the engagement flap, and durability is improved.

In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

According to a sixth aspect of the present invention, in the foldable cold storage container according to any one of the second to fifth aspects, the two lid portions and the two bottom surface portions are respectively opposed to the opposite lid portion and bottom surface portion. It is set as the structure where the length which goes is shorter than the height of a surrounding wall part.

According to the present invention, when the cold insulation container is folded, the lid portion and the bottom surface portion do not protrude from the outer size of the peripheral wall portion. Thereby, the folding size of the cold insulation container can be made compact, and the collection and storage of the cold insulation container becomes easy.

Therefore, a foldable cold storage container that can be folded compactly can be provided.

The invention described in claim 7 is the collapsible cold container according to any one of claims 1 to 6, when folding, is configured to bent the bottom portion to the peripheral wall portion inwardly, bottom surface portion at the time of use A flexible bottom sheet covering the entire outer surface is attached along the lower edge of the four peripheral walls.

  According to the present invention, the entire outer surface of the bottom portion is covered with the bottom sheet. As a result, when the bottom surface portions are in a closed posture, even if a gap is generated between the bottom surface portions or between the bendable peripheral wall portion and the bottom surface portion, communication between the inside and outside is blocked by the bottom surface sheet, and the cold insulation performance is improved. Not damaged.

  Moreover, even if the ice adhering to the stored frozen goods melts and the water flows inside, the bottom sheet can prevent the outflow to the outside of the cold storage container.

  Further, according to the present invention, since the bottom surface portion is folded inwardly into the peripheral wall portion and folded, the bottom sheet is not obstructed when folded, and the bottom sheet has flexibility, so that the peripheral wall is folded when folded. It can be easily stored inside the unit.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding property of the cold storage container.

According to an eighth aspect of the present invention, in the foldable cold storage container according to the seventh aspect, the bottom sheet is made of a waterproof fabric.

According to the present invention, the bottom sheet that covers the outer surface of the bottom part is made of waterproof fabric. Thereby, it becomes possible to prevent the outflow of water from the cold container to the outside by the bottom sheet.

In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

The invention according to claim 9 is the foldable cold insulation container according to any one of claims 1 to 8 , wherein the vacuum heat insulating material is a core material obtained by compression-molding a fiber material and is a jacket material having gas barrier properties. The interior covered with the covering material is decompressed and sealed in a vacuum.

  According to the present invention, the heat insulating property can be remarkably improved as compared with the conventional heat insulating material. Thereby, even when a thin vacuum heat insulating material is used, necessary cold insulation performance can be secured, and even a cold insulation container having the same internal capacity can be made compact.

  In addition, by using a material having high strength and rigidity as the jacket material, the strength and rigidity of each of the lid portion, the peripheral wall portion and the bottom surface portion formed by including the vacuum heat insulating material in the sheet material are improved. Is possible.

  Therefore, it is possible to provide a foldable cold storage container having extremely high cold storage performance.

A tenth aspect of the present invention is the foldable cooler according to any one of the first to ninth aspects, wherein the vacuum heat insulating material has a thickness of 2 mm or more and 20 mm or less.

  If the thickness of the vacuum heat insulating material is less than 2 mm, the rigidity and strength are low even when necessary cold insulation performance is obtained, and damage is likely to occur due to external force. When the thickness of the vacuum heat insulating material exceeds 20 mm, the cold insulation performance is unnecessarily improved, which becomes a factor that hinders the compactness and cost saving of the cold insulation container. A vacuum heat insulating material having a thickness in the range of 2 mm to 20 mm is preferable, and a thickness of about 10 mm is optimal from the viewpoint of cold insulation performance, compactness, and cost saving.

  Therefore, it is possible to reduce the thickness of the vacuum heat insulating material while ensuring the cold insulation performance, and it is possible to provide a foldable cold insulation container that is compact with respect to the internal volume.

The invention according to claim 11 is the folding type cold insulation container according to any one of claims 1 to 10 , wherein the vacuum heat insulating material has an initial thermal conductivity of 0.01 W / mK or less. Has been.

  According to the present invention, the heat insulation can be remarkably improved by using a vacuum heat insulating material having a thermal conductivity (initial heat conductivity) in the above range. Therefore, it is possible to reduce the thickness of the heat insulating material, and it is possible to reduce the size of the cold insulation container while ensuring the necessary cold insulation performance.

  The thermal conductivity (initial thermal conductivity) of the vacuum heat insulating material is preferably 0.01 W / mK or less. However, when the cold insulation performance is improved or the thickness is reduced, the thermal conductivity is 0.006 W / mK or less. Desirably, 0.003 W / mK or less is optimal.

  Therefore, it is possible to reduce the thickness of the vacuum heat insulating material while ensuring the cold insulation performance, and it is possible to provide a foldable cold insulation container that is compact with respect to the internal volume.

The invention according to claim 12 is the folding-type cold storage container according to any one of claims 1 to 11 , wherein a regenerator having a melting point of −27 ° C. or higher and −18 ° C. or lower is accommodated therein. Has been.

  In a wholesaler or a distribution center that uses a cold storage container to deliver frozen goods in small quantities, the temperature of a freezer warehouse is usually controlled in the range of −30 ° C. to −22 ° C. in many cases.

  According to the present invention, a regenerator having a melting point of −27 ° C. or higher and −18 ° C. or lower can be stored in the freezer warehouse and solidified in accordance with the set temperature of the freezer warehouse. It can be stored in a container and kept cool.

  Therefore, the refrigeration agent can be easily solidified only by storing the regenerator in a refrigeration warehouse, and a foldable cold-reserving container with improved workability can be provided.

The invention according to claim 13 is the foldable cold storage container according to claim 12 , which stores at least 1 kg of a regenerator per 50 liters of internal volume, and has an average internal temperature of 0 ° C. or lower for 10 hours or longer. It is set as the structure which can be hold | maintained.

  According to the present invention, a low average temperature can be maintained for a long time only by storing a cool storage agent inside a cold insulation container in accordance with the improvement of heat insulation by a vacuum heat insulating material. Thereby, it becomes possible to deliver for a long time without impairing the quality of frozen goods.

  Moreover, according to this invention, predetermined temperature can be maintained for a long time only by accommodating a small amount of cool storage agents inside a cold storage container. Thereby, compared with the case where a lot of cool storage agents are thrown in, the fall of the cold storage temperature immediately after the cool storage agent is thrown in can be suppressed, and the trouble that freezes frozen goods can be avoided. In other words, as in the prior art, after confirming that the temperature in the container has risen to some extent with the introduction of a large amount of the regenerator, there is no need for the trouble of storing the frozen product in the cold storage container.

  Therefore, by using a small amount of the cold storage agent, it is possible to provide a foldable cold storage container that can be kept cool for a long time and can be delivered for a long time without impairing the quality of the frozen product.

The invention described in claim 14 is the folding cold-reserving container according to any one of claims 1 to 13 , wherein the internal volume is 70 liters or more.

  According to the present invention, the capacity is suitable for the capacity of the frozen goods sorted for each small delivery destination, and the weight when the frozen goods are stored becomes appropriate, and the sorting work and the delivery work can be performed efficiently. It becomes possible.

  When the frozen product is stored, the weight is appropriate, and by providing an appropriate capacity for storing the sorted frozen product, it is possible to provide a foldable cold storage container that can efficiently perform the delivery operation.

According to a fifteenth aspect of the present invention, in the foldable cold container according to any one of the first to fourteenth aspects, the sheet material is made of a waterproof fabric.

According to the present invention, the sheet material forming the peripheral wall portion, the bottom and lid are manufactured fabric having a waterproof property. This prevents water adhering to the sheet material on the inner surface of the peripheral wall portion, the bottom surface portion, or the lid portion from penetrating into the interior, and there is no dimensional change due to moisture absorption, and there is a positional shift of the enclosed vacuum heat insulating material. resulting Na not.

  In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

Therefore, it is possible to prevent the penetration of water into each part, and it is possible to provide a foldable cold storage container that is improved in durability and work efficiency.

The invention according to claim 16 is the foldable cold storage container according to any one of claims 1 to 15 , and is externally used when not in use, among the surfaces of the peripheral wall portion, the lid portion, and the bottom surface portion. The reinforcing structure is applied to at least one of the surfaces located on the side.

  When the cold insulation container is used, the outer surface of the four peripheral walls, the outer surface of the two lids, and the outer surface of the two bottom surfaces are located on the outside. For this reason, during delivery of frozen goods using a cold container, an external force is likely to be applied to each surface located on the outside side, and the vacuum heat insulating material is easily damaged.

  In addition, when the cold storage container is not used, the inner surface of the lid portion faces the outside when the two lid portions are bent outward from the peripheral wall portion. For this reason, an external force is easily applied to the inner surface of the lid, and the vacuum heat insulating material may be damaged.

  According to the present invention, since the reinforcement structure is applied to each surface to which these external forces are easily applied, the vacuum heat insulating material is protected and the durability is improved.

  As the reinforcing structure, for example, it is possible to adopt a configuration in which the thickness or strength of the sheet material containing the vacuum heat insulating material is increased, or a structure in which a stiff reinforcing material is inserted between the sheet material and the vacuum heat insulating material. Is possible.

  Therefore, the vacuum heat insulating material can be protected from external force when in use and when not in use, and a foldable cold insulated container with improved durability can be provided.

The invention according to claim 17 is the foldable cold storage container according to any one of claims 1 to 16 , wherein the regenerator stores the regenerator on the inner surface of at least one of the lid, the peripheral wall, and the bottom. It is the structure which provided the agent storage part.

  According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

  The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

  Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

According to an eighteenth aspect of the present invention, in the foldable cold storage container according to any one of the first to sixteenth aspects, a flexible inner lid is provided inside the lid portion, and the inner lid is a lid. It is attached along the upper edge of the peripheral wall part to which one of the parts is connected, and the length of the inner lid is equal to or longer than the length to the lower end of the inner surface of the opposing peripheral wall part.

  According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

  In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

  In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

The invention according to claim 19 is the foldable cold storage container according to claim 18 , wherein a cold storage agent storage portion for storing the cold storage agent is provided on at least one inner surface of the lid portion, the peripheral wall portion, the bottom surface portion or the inner lid. It is set as the provided structure.

  According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

  The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

  Moreover, in the structure which provides an inner cover inside a cold storage container, it is good to provide a cool storage agent accommodating part in the inner surface of the surrounding wall part to which an inner cover is attached. By providing the cool storage agent storage part in this part, the cool storage agent and the frozen product stored can be easily covered with the inner lid, and the cold insulation performance can be further improved.

  Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

The invention according to claim 20 is the foldable cold storage container according to any one of claims 1 to 19 , further comprising a protective container that houses the foldable cold storage container, and the protective container includes a box body in use. The folded refrigerated container is accommodated, and a plurality of foldable chilled containers folded when not in use can be accommodated.

  The cold storage container of the present invention can obtain the strength and rigidity of the cold storage container alone by using a vacuum heat insulating material having predetermined strength and rigidity. However, there is a risk that an excessive external force is applied to the cold storage container during delivery. In addition, when the cool containers are stacked in multiple stages during delivery, the strength may be insufficient.

  According to the present invention, by storing the cold storage container in the protective container, no external force is directly applied to the cold storage container, and damage to the cold storage container is prevented.

  Further, even when the cold storage containers are stored in the protective containers and stacked in multiple stages, the weight on the upper side is supported by the protective containers, and no load is directly applied to the cold storage containers. Thereby, it is possible to prevent breakage of the cold container. In this case, working efficiency such as loading can be further improved by adopting a structure in which the protective containers are stacked and engaged.

  Moreover, according to this invention, the several cold storage container folded at the time of non-use can be accommodated in the inside of a protective container, and collection | recovery and storage of a cold storage container can be performed efficiently.

  The protective container is lightweight and can be provided with sufficient strength and rigidity by being made of a synthetic resin molded product or the like. Further, by making the protective container foldable, collection after delivery can be easily performed, and storage space is also reduced.

  Therefore, it is possible to reduce the external force applied to the foldable cool container and improve the durability, and to easily carry and store the foldable cool container.

The invention according to claim 21 has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each of the portions is formed by including a flat vacuum heat insulating material in a sheet material. In some cases, a folding body is formed by forming the box by the respective parts, and can be folded by overlapping the respective parts when not in use, and the sheet material is made of a waterproof fabric. .

According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material. Therefore, it is possible to provide a foldable cold storage container that can be easily collected and stored by folding it when not in use, while having excellent cold storage performance.

Moreover, according to this invention, the sheet | seat material which comprises a surrounding wall part, a bottom face part, and a cover part is manufactured with the fabric which has waterproofness. This prevents water adhering to the sheet material on the inner surface of the peripheral wall portion, the bottom surface portion, or the lid portion from penetrating into the interior, and there is no dimensional change due to moisture absorption, and there is a positional shift of the enclosed vacuum heat insulating material. Does not occur.

In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

Therefore, it is possible to prevent the penetration of water into each part, and it is possible to provide a foldable cold storage container that is improved in durability and work efficiency.

The invention described in claim 22 has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each of the portions is formed by including a flat vacuum heat insulating material in a sheet material. Sometimes, each part forms a box, and when not in use, the parts can be overlapped and folded, and each of the surfaces of the peripheral wall part, the lid part, and the bottom part can be externally used when used or not used. This is a foldable cold-insulated container in which a reinforcing structure is provided on at least one of the surfaces located in the area.

According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material. Therefore, it is possible to provide a foldable cold storage container that can be easily collected and stored by folding it when not in use, while having excellent cold storage performance.

By the way, when using the cold insulation container, the outer surface of the four peripheral wall portions, the outer surface of the two lid portions, and the outer surface of the two bottom surface portions are located outside. For this reason, during delivery of frozen goods using a cold container, an external force is likely to be applied to each surface located on the outside side, and the vacuum heat insulating material is easily damaged.

In addition, when the cold storage container is not used, the inner surface of the lid portion faces the outside when the two lid portions are bent outward from the peripheral wall portion. For this reason, an external force is easily applied to the inner surface of the lid, and the vacuum heat insulating material may be damaged.

According to the present invention, since the reinforcement structure is applied to each surface to which these external forces are easily applied, the vacuum heat insulating material is protected and the durability is improved.

As the reinforcing structure, for example, it is possible to adopt a configuration in which the thickness or strength of the sheet material containing the vacuum heat insulating material is increased, or a structure in which a stiff reinforcing material is inserted between the sheet material and the vacuum heat insulating material. Is possible.

Therefore, the vacuum heat insulating material can be protected from external force when in use and when not in use, and a foldable cold insulated container with improved durability can be provided.

The invention according to claim 23 has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each of the portions is formed by including a flat vacuum heat insulating material in a sheet material. Sometimes, each part forms a box, and when not in use, the parts can be overlapped and folded, and a regenerator that houses a regenerator on the inner surface of at least one of the lid, the peripheral wall, or the bottom It is a foldable cold storage container configured to include a storage unit.

According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material. Therefore, it is possible to provide a foldable cold storage container that can be easily collected and stored by folding it when not in use, while having excellent cold storage performance.

Moreover, according to this invention, a cool storage agent does not move inside a cold storage container during delivery, and a sheet | seat material and frozen goods are not damaged by the movement of a cool storage agent.

The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

The invention according to claim 24 has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed, and each of the portions is formed by including a flat vacuum heat insulating material in a sheet material. Sometimes, each part forms a box, and when not in use, the parts can be overlapped and folded, and a flexible inner lid is provided inside the lid, and the inner lid It is a foldable cold storage container that is attached along the upper edge of the peripheral wall part to which one of the parts is connected, and that the length of the inner lid is equal to or longer than the length to the lower end of the inner surface of the opposing peripheral wall part .

According to the present invention, a high cold insulation performance can be obtained by using a vacuum heat insulating material. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material. Therefore, it is possible to provide a foldable cold storage container that can be easily collected and stored by folding it when not in use, while having excellent cold storage performance.

According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

According to a twenty-fifth aspect of the present invention, in the foldable cold storage container according to the twenty-fourth aspect, a cold storage agent storage portion for storing the cold storage agent is provided on at least one inner surface of the lid portion, the peripheral wall portion, the bottom surface portion, or the inner lid. It is set as the provided structure.

According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

Moreover, in the structure which provides an inner cover inside a cold storage container, it is good to provide a cool storage agent accommodating part in the inner surface of the surrounding wall part to which an inner cover is attached. By providing the cool storage agent storage part in this part, the cool storage agent and the frozen product stored can be easily covered with the inner lid, and the cold insulation performance can be further improved.

Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view showing a foldable cold insulation container 1 according to the present embodiment, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a state in which a lid portion of the cold insulation container 1 in FIG. 4 is a sectional view taken in the direction of arrow C in FIG. 3, FIG. 5 is a sectional view taken in the direction of arrow EE in FIG. 3, and FIG. 6 is a sectional view taken in the direction of arrow BB in FIG. Sectional drawing which shows the state which cancelled | released, FIG.7 (a)-(e) is a perspective view which shows the procedure which folds the cold storage container 1 of FIG. 8A is a perspective view showing a state in which the cold insulation container 1 of FIG. 1 is housed in a protective container, and FIGS. 8B and 8C show the cold insulation container 1 folded when not in use as a protective container. It is a perspective view which shows the state to accommodate.

  The foldable cold storage container 1 of the present embodiment is a foldable cold storage container that is a box when in use and can be folded when not in use.

  As shown in FIG. 1, the cold insulation container 1 of the present embodiment includes four peripheral wall portions 10, 10, 13, and 13 that are connected to each other in a square shape so that they can be bent, and two opposing peripheral wall portions 10, 10, two lids 16, 16 connected to bendable along the upper edges 11, 11, and a lower edge 12 of the two peripheral walls 10, 10 connected to the lids 16, 16. , 12 and two bottom surfaces 21 and 21 connected to each other so as to be bendable.

In the present embodiment, the cover portion 16 has a length toward the facing cover portion 16, that is, a length L from the upper edge 11 of the peripheral wall portion 10 to the side edge 17 of the cover portion 16, and the peripheral wall portion 13. a substantially half of the width D, the lid portion 1 6, 16 of the two sides have the same shape. Further, the bottom surface portions 21 and 21 of the two surfaces have the same shape as the lid portion 16. Further, the length L of the lid portion 16 is shorter than the height H of the peripheral wall portion 10.

  Specifically, as shown in FIG. 1, the cold insulation container 1 of the present embodiment has a width W of 600 mm, a depth D of 400 mm, and a height H of 300 mm, and the length L of the lid portion 16 is substantially the same. The configuration is 200 mm and shorter than the height H. The internal volume of the cold container 1 is approximately 70 liters.

  As shown in FIG. 2, the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 are all formed by including a flat vacuum heat insulating material 31 in a sheet material 30.

  As shown in FIG. 2, the vacuum heat insulating material 31 covers a core material 32 made of at least one of a fiber material, a resin foam material, and a granular material with an outer covering material 33 having a gas barrier property. It is a heat insulating material formed by decompressing the inside and vacuum-sealing it.

  In the present embodiment, a laminate film formed by laminating a heat welding layer and a protective layer on the inside and outside of the gas barrier layer is used as the covering material 33. That is, the covering material 33 is a metal foil such as aluminum, or a metal or non-oxide deposited film as a gas barrier layer, and a film such as unstretched polypropylene is used as a heat welding layer on the inner surface side of the gas barrier layer. In addition to being laminated, a laminate film in which a film such as nylon or polyethylene terephthalate is laminated as a protective layer on the outer surface side of the gas barrier layer. Moreover, the core material 32 used what heat-molded the fiber material using the binder.

  In the present embodiment, the vacuum heat insulating material 31 having such a configuration, which has a thermal conductivity (initial thermal conductivity) of 0.005 W / mK and a thickness of about 10 mm, is used. Thereby, while ensuring the high heat insulation in the surrounding wall part 10, the cover part 16, and the bottom face part 21, the said part is aimed at thickness reduction.

  The sheet material 30 is formed by sewing a polyester fabric with a synthetic resin coat on the back surface, and has water resistance, waterproofness and flexibility.

  In the present embodiment, a sheet having a thickness of 4 mm is provided on the outer wall surface of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 when the cold insulation container 1 is used or not used, as shown in FIG. A material 30a is used, and a sheet material 30b having a thickness of 2 mm is used on the other surface.

  In other words, each of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 of the cold insulation container 1 has the vacuum heat insulating material 31 inside the sheet material 30 sewn in a bag shape having water resistance, waterproofness, and flexibility. It is an enclosed structure. The peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 can be bent by connecting the side edges of the sheet material 30 to each other by sewing.

  Further, as shown in FIG. 1, the two peripheral wall portions 13, 13 adjacent to the peripheral wall portions 10, 10 connected to the lid portion 16 and the bottom surface portion 21 are formed by folding lines 23 extending in the height direction substantially at the center portion. The vacuum heat insulating material is divided along the folding line 23, and the peripheral wall portion 13 can be bent along the folding line 23.

  That is, the peripheral wall portion 13 is formed by storing the two vacuum heat insulating materials 31 and 31 inside the sheet material 30 sewn in a bag shape and sewing the sheet material 30 along the fold line 23. It is possible to bend along the line 23.

  As shown in FIGS. 1 and 3, one lid portion 16 is provided with a flexible engagement flap 18 having a surface fastener 18 a along the side edge 17, and the other lid portion 16 has A hook-and-loop fastener 20 is provided so as to correspond to the engagement flap 18 of one lid portion 16. The engagement flap 18 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing the surface fastener 18a on the sheet material 30b.

  As shown in FIGS. 1 and 3, a flexible engagement flap 24 having a surface fastener 24 a is provided substantially upward along the upper edge 14 on the two peripheral wall portions 13 that can be bent. It is attached by sewing in a state of being biased toward. The engagement flap 24 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 24a on the sheet material 30b.

  Further, surface fasteners 19, 19 are provided on the inner surfaces of the two lid portions 16, 16 so as to correspond to the surface fasteners 24 a of the engagement flap 24.

  The bottom surface portion 21 has the same basic structure as the lid portion 16. That is, as shown in FIGS. 1 and 6, one bottom surface portion 21 is provided with a flexible engagement flap 22 having a surface fastener 22 a along a side edge 29. In addition, a hook-and-loop fastener 28 is provided on the other bottom surface portion 21 so as to correspond to the engagement flap 22 of the one bottom surface portion 21. The engagement flap 22 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 22a on the sheet material 30b.

  As shown in FIGS. 1 and 6, on the outer surface side of the bottom surface portion 21, a flexible bottom sheet 27 that covers the entire outer surface is provided. In other words, the bottom sheet 27 is a rectangular sheet that is substantially equal to the outer shape of the two bottom surface portions 21, and its four sides are sewn along the lower edges 12 and 15 of the peripheral wall portions 10 and 13 and attached. It has been. In the present embodiment, the sheet material 30b (thickness 2 mm, see FIG. 2) is used for the bottom sheet 27 as well.

  An inner lid 25 is provided inside the cold insulation container 1. The inner lid 25 is a rectangular sheet material having flexibility. As shown in FIGS. 1 and 5, one side of the inner lid 25 is attached by sewing along the upper edge 11 of the peripheral wall portion 10 to which the lid portion 16 is connected. It has been. The inner lid 25 is a shielding material for assisting the shielding by the lid portion 16.

  In the present embodiment, the inner lid 25 has a width substantially equal to the width W of the cold container 1 as shown in FIG. 1, and the length is the length to the opposing peripheral wall portions 10 as shown in FIG. 5. The sum of the height D and the height H of the peripheral wall 10 is greater than or equal to the sum. By setting the inner lid 25 to this size, as shown in FIG. 5, even when the frozen products S1 to S4 are stored in a part of the inside of the cold insulation container 1 and a gap is generated, all of the frozen products S1 to S4 are removed. It can be covered with the inner lid 25, and the shielding effect is increased.

Inside the cold container 1 is provided with a cold storage agent retract and section 26 for accommodating the refrigerant 13A. The cool storage agent storage section 26 is a bag formed using a mesh net material as shown in FIGS. 1 and 5, and the cool storage agent 34 can be stored therein as shown in FIG. 5. In the present embodiment, the regenerator storage portion 26 is provided on the inner surface of the peripheral wall portion 10 to which the inner lid 25 is connected. This can easily cover the refrigerant 13A 34 and frozen products S1~S4 in the inner lid 25, thereby improving the cold performance and shielding of the frozen product S 1 to S4.

  In addition, the cool storage agent storage part 26 can be provided not only on the inner surface of the peripheral wall part 10 but also on the inner surfaces of the peripheral wall part 13 and the lid part 16.

  In the present embodiment, the cool storage agent storage unit 26 can store two cool storage agents 34 having a melting point of −27 ° C. to −18 ° C. and a weight of 1 kg. Moreover, the cool storage agent 34 used in this embodiment is “CAH-1001 minus 25 ° C. grade” manufactured by Inoac Corporation.

  Next, an assembling procedure at the time of using the cold insulating container 1 of the present embodiment will be described.

  First, as shown in FIG. 6, the bottom surface portions 21 and 21 are rotated to the closed posture (horizontal direction), and the side edges 29 and 29 are brought into contact with each other as shown in FIG. Then, the engagement flap 22 provided on one bottom surface portion 21 is pressed against the other bottom surface portion 21 so that the surface fastener 22a of the engagement flap 22 and the surface fastener 28 of the other bottom surface portion 21 are engaged with each other.

When the bottom surface portions 21 and 21 are engaged in this way, a substantially flat surface is formed by both bottom surface portions 21 as shown in FIG. 5, and the bottom sheet 27 is positioned below the bottom surfaces 21 and 21 so as to cover the entire surface. To do. Therefore, even if the inter slight gap between the bottom portion 21 and the peripheral wall portion 13 has occurred, is cut off from communicating with inside and outside by the bottom sheet 27, it is not impaired cold performance.

  In the present embodiment, the bottom sheet 27 is made of a water-resistant and waterproof sheet material 30b to prevent water staying inside from flowing out of the container.

  Next, as shown in FIG. 5, the cold storage agent 34 is stored in the cold storage agent storage unit 26 as necessary, and frozen products S1 to S4 such as frozen food to be delivered are stored inside, and the frozen product S1 is stored. Put the inner lid 25 to cover ~ S4.

Here, in the present embodiment, the regenerator 34 having a melting point of −27 ° C. or higher and −18 ° C. or lower is used. Usually, in a wholesaler or a distribution center that delivers small roe, the temperature of a freezer warehouse is often controlled to about −30 ° C. to −22 ° C. Therefore, and only by the refrigerant 13A 34 stored in the cold storage warehouse as can to be solidified, use the refrigerant 13A 34 having a melting point of the range. Thereby, at the time of delivery, it becomes possible to immediately store the refrigerating agent stored in the refrigeration warehouse and solidified in the cold insulation container 1 for cold preservation.

  When all the frozen products S1 to S4 to be stored are stored, the lid portions 16 and 16 are rotated to the closed posture (substantially horizontal direction). As shown in FIG. 3, when the lid portions 16 and 16 are turned inward, the engagement flap 24 provided on the peripheral wall portion 13 substantially upward is pressed by the turning of the lid portion 16 to be The hook-and-loop fastener 24a of the engagement flap 24 and the hook-and-loop fastener 19 of the lid 16 are engaged with each other.

  When both the lid portions 16 and 16 are moved to the closed posture, the entire surface fastener 24a of the engagement flap 24 is engaged with the surface fastener 19 of the lid portion 16, and the gap between the lid portion 16 and the peripheral wall portion 13 is established. It is shielded by the engagement flap 24.

  Moreover, when the cover parts 16 and 16 are moved to a closed position, the side edges 17 and 17 of the cover parts 16 and 16 will face each other like FIG. Finally, the engagement flap 18 provided on one lid 16 is pressed against the other lid 16 to engage the surface fasteners 18a and 20 with each other. Thereby, the abutting part of the side edges 17 and 17 of the lid parts 16 and 16 is covered with the engagement flap 18.

  In other words, the cold insulation container 1 of the present embodiment can be obtained by simply rotating the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture and engaging them with the engagement flaps 22 and 18 as shown in FIG. As described above, a box surrounded by the peripheral wall portions 10 and 13, the bottom surface portion 21, and the lid portion 16 including the vacuum heat insulating material 31 is formed.

  As shown in FIG. 5, the formed box is covered with the engagement flap 22 at the abutting portion between the side edges 29 and 29 of the bottom surface portions 21 and 21, and the outer surface of the bottom surface portion 21 is the bottom sheet 27. Covered. Further, as shown in FIG. 4, the abutting portions of the lid portions 16 and 16 are covered with the engagement flap 18, and the gap between the lid portion 16 and the peripheral wall portion 13 is shielded by the engagement flap 24.

  As described above, the cold insulation container 1 according to the present embodiment is assembled by moving the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture, and the communication between the inside and the outside is completely blocked, and the entire surface is vacuum insulated. It is possible to immediately form a box body surrounded by materials and having a very high heat insulating property.

  In the present embodiment, by storing one cold storage agent having a melting point of −27 ° C. or more and −18 ° C. or less per 50 liters inside the cold insulation container 1, the average temperature of the atmosphere inside the cold insulation container 1 is set. It can be maintained at 0 ° C. or lower continuously for 10 hours or longer, and can be maintained at about −15 ° C. continuously for 10 hours or longer if replaced with the product temperature of a frozen product (for example, ice cream). Therefore, by delivering the cold storage container 1 in combination with the cold storage agent according to the present embodiment, it is possible to maintain the frozen product at a low temperature and perform long-distance delivery without damaging the quality. In addition, you may substitute at least one part of a cool storage agent with dry ice.

  Next, the folding procedure of the cold insulation container 1 when not in use will be described.

  The cold storage container 1 is folded, for example, when the cold storage container 1 is emptied after delivery or when the cold storage container 1 is stored and returned to the delivery source. In the following description of the folding procedure, it is assumed that the cool storage agent 34 stored in the cool storage agent storage unit 26 has been taken out.

  At the time of folding, first, as shown in FIG. 7A, the engagement flap 24 of the lid portion 16 of the cold insulation container 1 which is a box is grasped and pulled up. 7B, the engagement of the surface fastener 18a of the engagement flap 18 and the surface fastener 20 of the lid portion 16, and the engagement of the surface fastener 24a of the engagement flap 24 and the surface fastener 19 of the lid portion 16. The lids 16 and 16 are rotated to the open posture while releasing the engagement.

Then, 6, as in FIG. 7 (c), asked the inner lid 25 to the cool storage containing portion 26 side, by pulling up grip the engagement flaps 22 of the bottom portion 21, and the surface fasteners 22a of the engaging flap 22 The engagement of the hook-and-loop fastener 28 of the bottom surface portion 21 is released. 7D, the bottom surface portions 21 and 21 are folded on the inner surfaces of the peripheral wall portions 10 and 10, and the lid portions 16 and 16 are folded on the outer surfaces of the peripheral wall portions 10 and 10, respectively.

  Subsequently, as shown in FIG. 7D, the peripheral wall portions 10 are brought close to each other while being bent inward along the fold line 23. As a result, as shown in FIG. 7E, the four surfaces of the lid portion 16, the peripheral wall portion 10, the bottom surface portion 21, and the bent peripheral wall portion 13 are overlapped in order from the outside, and all eight surfaces overlap. Folding is completed in the state.

  As described above, the cold insulation container 1 of the present embodiment can be folded very easily and compactly in a short time without attaching / detaching a member such as a heat insulating panel as in the prior art.

  When the cold insulation container 1 is folded, as shown in FIG. 7E, a total of eight surfaces of the lid portions 16 and 16, the peripheral wall portions 10 and 10, the bottom surface portions 21 and 21 and the peripheral wall portions 13 and 13 are folded. Become.

  Further, as described above, in the present embodiment, the length L (200 mm) of the lid portion 16 and the bottom surface portion 21 is shorter than the height H (300 mm) of the peripheral wall portions 10 and 13. Thereby, when the cold insulation container 1 is folded, it becomes a shape in which the eight surfaces are overlapped with the peripheral wall portion 10 as the maximum outer dimension.

  Further, the cold insulation container 1 of FIG. 1 uses the thick sheet material 30a shown in FIG. 2 for all surfaces located on the outside side when in use or not in use. That is, the thick sheet material 30a shown in FIG. 2 is employed on the outer surface side of the peripheral wall portion 10, the peripheral wall portion 13, and the bottom surface portion 21, and on the inner surface and outer surface side of the lid portion 16, respectively.

  More specifically, the lid portion 16 has a thickness of 18 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thickness (4 mm + 4 mm) of the sheet material 30a that encloses it. The peripheral wall portions 10 and 13 have a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Further, the bottom surface portion 21 has a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Therefore, when the eight surfaces are folded and overlapped, the total thickness becomes approximately 132 mm.

In other words, when the cold insulation container 1 of the present embodiment is folded, the outer dimension (W600 mm × H300 mm) of the peripheral wall 10 can be the maximum outer dimension, and the thickness can be reduced to approximately 132 mm. Compared to, it can be made extremely compact. Thereby, it is also possible to store a plurality of folded cold insulation containers 1 in a general-purpose roll pallet or the like and easily move them.

  Further, as described above, the thick sheet material 30a is used for all the surfaces positioned on the outside side when in use or not in use.

Accordingly, when the box is formed in use, the vacuum heat insulating material 31 included in each surface is protected from external force by the thick sheet material 30a. When folded when not in use, the inner surface of the lid portion 16 is protected from external force by the thick sheet material 30a. This ensures that in both in use and during non-use, can protect the vacuum insulation material 31 from an external force, it is possible to improve durability by preventing damage to the vacuum heat insulating material 31.

  Here, as described above, the cold insulation container 1 of the present embodiment is formed by the lid portion 16, the peripheral wall portions 10 and 13 and the bottom surface portion 21 including the vacuum heat insulating material 31 having predetermined strength and rigidity. Therefore, even when the cold container 1 is used alone, a certain degree of strength and rigidity can be obtained. However, the durability of the cold insulation container 1 can be remarkably improved by storing the cold insulation container 1 in a protective container having higher strength and rigidity and using it as a set.

  For example, as shown in FIG. 8 (a), it is possible to prepare a protective container 2 that can completely store the cold insulating container 1, and to store the cold insulating container 1 that is a box at the time of delivery and use it as a set. .

  The protective container 2 shown in FIG. 8 (a) is manufactured by molding a synthetic resin material, has a box shape with the top opened, and is extremely lightweight. The protective container 2 is formed with flange portions 2a and 2b by projecting the outer surfaces of the upper and lower portions over the entire circumference. Therefore, the protective container 2 can be easily carried using the flange portion 2a as a clue. In addition, the lids 16 and 16 can be opened and closed by grasping the engagement flap 18 while the cold container 1 is stored in the protective container 2.

  In addition, the flange portion 2b of the protective container 2 is overlapped with the flange portion 2a of another protective container 2 and can be engaged, and the protective containers 2 can be stacked in multiple stages. Therefore, even when a large number of protective containers 2 containing the cold storage containers 1 are loaded on a delivery vehicle, the loading space can be effectively used by stacking them in multiple stages, and an excessive load is not directly applied to the cold storage containers 1. There is no damage.

As described above, the durability of the cold insulation container 1 can be remarkably improved by using the cold insulation container 1 together with the reduced weight protective container 2 as a set.

  Furthermore, as shown in FIG.7 (e), the cold insulation container 1 can be folded in the shape where eight surfaces were piled up by making the surrounding wall part 10 into the largest outer dimension. Accordingly, as shown in FIGS. 8B and 8C, a plurality of folded cold storage containers 1... Can be stored in one protective container 2.

  As a result, a plurality of cold storage containers 1 can be collectively stored in the protective container 2 and easily carried, and preparation work and collection work for delivery can be performed efficiently. In addition, a plurality of cold storage containers 1 can be arranged and stored in the protective container 2, and the storage space can be reduced.

  Although the protective container 2 shown in FIG. 8 has been described as being formed in a box shape, the protective container 2 can be folded to facilitate carrying the protective container 2 during preparation and collection. The storage space can also be reduced.

  The foldable cold storage container of the present invention is suitable for uses such as cold transport of frozen goods because it can be easily collected and stored when not in use, while having excellent cold storage performance.

The perspective view which shows the folding-type cold storage container which concerns on embodiment of this invention AA arrow sectional view of FIG. The perspective view which shows the state which closes the cover part of the cold storage container of FIG. C direction arrow view of FIG. EE arrow cross-sectional view of FIG. Sectional drawing which shows the state which canceled the engagement of the bottom face part in the BB arrow sectional drawing of FIG. (A)-(e) is a perspective view which shows the procedure which folds the cold storage container of FIG. (A) is a perspective view which shows the state which accommodated the cold storage container of FIG. 1 in the protection container, (b), (c) is a perspective view which shows the process in which the folded cold storage container is accommodated in a protection container. The perspective view which shows the conventional cold storage container

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding type cold storage container 2 Protective container 10,13 Peripheral wall part 11,14 Upper edge 12,15 Lower edge 16 Lid part 17 Side edge 18 Engagement flap 18a Surface fastener 19 Surface fastener 20 Surface fastener 21 Bottom surface part 23 Folding line 24 Engagement flap 24a Surface fastener 25 Inner lid 26 Coolant storage part 27 Bottom sheet 30 Sheet material 31 Vacuum heat insulating material 32 Core material 33 Cover material 34 Coolant

  The present invention relates to a foldable cold storage container that can be folded when not in use, and is a container mainly used for cold transport.

  In recent years, with the spread of frozen foods and the like, the delivery of frozen products that require cold storage is increasing. Such delivery is generally performed by dividing into large-volume delivery from a factory of frozen goods to a wholesaler (distribution center) and small-scale delivery from a wholesaler to a supermarket or a convenience store. By the way, in small-lot delivery in which frozen goods are delivered from a wholesaler to a market, a convenience store, etc., the frozen goods are distinguished for each delivery destination and stored in a cool container.

  2. Description of the Related Art Conventionally, as a cold container, a container that uses a simple heat insulating material such as foamed polystyrene or rigid foamed urethane foam and opens and closes a lid using a chuck, a hook-and-loop fastener, or the like is often used. However, such a cold storage container has a high initial thermal conductivity of the heat insulating material and is inferior in the cold storage performance, and is also apt to be bulky in transportation and storage after delivery. For this reason, a foldable cold storage container with improved cold storage performance has been developed (see Patent Document 1).

  FIG. 9 is a perspective view showing the cold insulation container 100 disclosed in Patent Document 1. FIG. The cold insulation container 100 disclosed in Patent Document 1 includes a flexible outer bag 101 and inner bag 103 and a vacuum heat insulation panel 102.

  The outer bag 101 has a bottom surface and five side surfaces that are sewn in a substantially rectangular parallelepiped shape, and a belt 105 is hung from the side surface to the opposite side surface through the bottom surface. A lid 104 is sewn on the upper side of the outer bag 101, and a vacuum heat insulation panel (not shown) is provided in advance in the bottom of the outer bag 101 and the inside of the lid 104.

  In use, four heat insulation panels 102 are inserted along the four side surfaces of the outer bag 101, and the surface fasteners 111 of the heat insulation panel 102 are engaged with the surface fasteners 110 of the outer bag 101.

  Further, the inner bag 103 is inserted into the outer bag 101 on which the heat insulating panel 102 is mounted, and the surface fastener 112 of the inner bag 103 is engaged with the surface fastener 111 of the heat insulating panel 102 for assembly.

  The frozen bag or the like is stored in the inner bag 103 of the assembled cold storage container 100, the cover 104 is covered with the outer bag 101, and the surface fasteners 106 and 108 of the cover 104 are connected to the surface fastener 107 of the outer bag 101, Each is engaged with 109 and closed for delivery.

  Further, the cold insulation container 100 disclosed in Patent Document 1 can be folded when not in use. In other words, when not in use, the inner bag 103 and the four heat insulation panels 102 are removed from the outer bag 101 and the heat insulation panel 102 and the folded inner bag 103 removed are removed from the outer bag 101, contrary to when assembling. Store.

  Then, the outer bag 101 is folded while being overlapped with the lid portion 104 facing the bottom surface, and the belt 105 is folded over both ends of the belt 105.

In other words, the cold storage container 100 disclosed in Patent Document 1 is used for cold storage and delivery of frozen products as a box body having a heat insulation effect when used, and can be folded and transported and stored when not in use without being bulky. is there.
JP 2003-112786 A

  However, as described above, the cold storage container 100 disclosed in Patent Document 1 requires time and labor for assembly during use and folding when not in use.

  For this reason, when a large number of cold storage containers 100 are used for delivery, much work is required for assembly work before delivery and folding work after delivery, which is a factor of reducing work efficiency.

  Moreover, since the cold insulation container 100 disclosed in Patent Document 1 includes the removable heat insulation panel 102 and the inner bag 103, it is easy to lose some of the constituent members.

  In addition to the cold storage container 100 disclosed in Patent Document 1, many foldable cold storage containers have been proposed. However, many things that are easy to assemble and fold are inferior in cooling performance, and have been waiting for the development of a cooling container that has excellent cooling performance and that can be quickly assembled and folded.

  The present invention has been proposed in view of the above-described circumstances, and an object thereof is to provide a cold insulation container that has high cold insulation performance and can be assembled and folded in a short time.

In order to achieve the above object, a foldable cold storage container according to the present invention includes four peripheral wall portions that are connected to each other in a rectangular shape and a lid that is connected to bendable along the upper edge of the peripheral wall portion. And a bottom part connected to bendable along the lower edge of the peripheral wall part, and the peripheral wall part, the lid part and the bottom part all include a flat vacuum heat insulating material in the sheet material The opposing two peripheral wall portions adjacent to the connected peripheral wall portion of the lid portion and the bottom surface portion are formed by dividing the vacuum heat insulating material along a fold line extending in the height direction at a substantially central portion, and the fold line The peripheral wall portion can be bent along the peripheral wall portion, the lid portion, and the bottom surface portion including the vacuum heat insulating material and connected and assembled into a box or folded and overlapped. The lid and bottom can be turned to the closed position when in use. When not in use, the lid part and the bottom part are disengaged, the bottom part is bent inward of the peripheral wall part or outward of the peripheral wall part, and the lid part is inward of the peripheral wall part or outside of the peripheral wall part. Can be folded by folding the cover, the peripheral wall and the bottom part close to each other while folding the peripheral wall part that can be bent inward along the fold line. It is a configuration.

  According to the present invention, since all of the four peripheral wall portions, the lid portion, and the bottom surface portion are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited. Further, the peripheral wall portion, the bottom surface portion, and the lid portion are all integrally formed by including a flat vacuum heat insulating material in the sheet material. Therefore, it is possible to assemble and fold in a short time without the trouble of removing the vacuum heat insulating material.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  According to the present invention, it is possible to provide a foldable cold storage container that can be easily collected and stored by being folded when not in use, while having excellent cold storage performance.

  In addition, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

In order to achieve the above-mentioned object, the invention according to claim 1 is directed to four peripheral wall portions connected in a rectangular shape so as to be able to bend each other, and along an upper edge of two opposing peripheral wall portions. A two-surface lid portion connected to bendable, and a bottom surface portion of two surfaces connected to bendable along the lower edge of the peripheral wall portion of the two surfaces connected to the lid portion ; the peripheral wall portion, the lid portion and the bottom portion are both formed by enclosing a flat vacuum insulation material in the sheet material, the peripheral wall portion of the second surface you adjacent articulated peripheral wall of the lid and bottom portion The vacuum heat insulating material is divided along a fold line extending in the height direction at a substantially central portion and can be bent along the fold line, and the peripheral wall portion, the lid portion, and the bottom surface portion are formed of the vacuum heat insulating material. encapsulated and in state of being connected to, or a box body assembled, folded and causes it-superimposable, the The other lid portion is provided with a flexible engagement flap having a surface fastener along a side edge engaged with the other lid portion, and the other lid portion has the engagement flap. A hook-and-loop fastener is provided at a portion corresponding to the two, and when the lid portions of the two surfaces are rotated in the closed position, the side edges of both lid portions are brought into contact with each other, and the engagement flap of the one lid portion is connected to the other lid portion. The two surface lid portions and the bottom surface portion are turned to a closed position and engaged with each other to form a box when in use, and when not in use, the lid is engaged with each other. The bottom and the bottom surface portions are disengaged, the bottom surface portion is bent inward of the peripheral wall portion or outwardly of the peripheral wall portion, and the lid portion is bent inwardly of the peripheral wall portion or outward of the peripheral wall portion. The peripheral wall portions are bent inward along a fold line and adjacent peripheral wall portions are brought close to each other, and the lid A collapsible cold containers folding configurable by superposing the peripheral wall portion and a bottom portion.

  According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

  Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

  Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

  Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

  As a configuration for engaging the two lid portions, for example, a configuration can be adopted in which the two lid portions are rotated in a closed posture and the end portions are overlapped and engaged with each other. However, in this configuration, as the thickness of the lid portion increases, a step is produced between the lid portions when engaged, and a gap is created between the lid portion and the bendable peripheral wall portion. For this reason, the inside and outside of the cold insulation container communicate with each other through the gap, and the cold insulation performance is impaired.

  According to the present invention, when the lid portions on the two surfaces are turned to the closed posture, the side edge masts of both lid portions are brought into contact with each other. Thereby, even if the thickness of a cover part increases, a level | step difference does not arise between cover parts, but a clearance gap does not arise between an upper edge of a cover part and the surrounding wall part which can be bent.

  Moreover, since the engagement flap of one cover part is made to contact | abut to the other cover part and a surface fastener is engaged, the butted part of the side edge of both cover parts is covered with an engagement flap. Thereby, the abutting site | part of the side edge of a cover part can be shielded with an engagement flap, and internal / external communication can be shielded, and cold insulation performance improves.

  Further, since the engagement flap has flexibility, it is possible to easily release the engagement between the hook-and-loop fasteners by grasping a part of the engagement flap.

  The configuration of the present invention can also be applied to the bottom portion.

  By applying the configuration of the present invention to the bottom surface portion, even if the thickness of the bottom surface portion increases, no gap is generated between the peripheral wall portions that can be bent when the bottom surface portions are engaged with each other. . Moreover, since the engagement flap of one bottom face part is made to contact | abut to the other bottom face part, and a surface fastener is engaged, the butted part of the side edge of both bottom face parts is covered with an engagement flap, and shielding property is provided. Further improvement is possible.

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

The invention according to claim 2, engaging with the folding cold container according to claim 1, the peripheral wall of the foldable two sides, a flexible with a surface fastener along the upper edge The flap is provided in a state of being biased upward from the lateral direction, and a surface fastener is provided on the two lids corresponding to the surface fastener, and the two lids are directed toward the closed position. When it rotates, it is set as the structure which a cover part contacts, pressing down an engagement flap, and a surface fastener engages.

Here, as a configuration in which the lid portions on the two surfaces are engaged in the closed posture, the configuration according to claim 1 , that is, a configuration in which the side edges of the lid portions are abutted and engaged with each other by an engagement flap is adopted. Even in this case, the bendable peripheral wall portion and the lid portion only abut on the sides. For this reason, a gap is easily formed between the bendable peripheral wall portion and the lid portion, which becomes a factor that impairs the cold insulation performance.

  According to the present invention, the engagement flap is provided along the upper edge of the bendable peripheral wall portion. Therefore, when the lid portion is rotated toward the closed position, the engagement flap is inward by the inner surface of the lid portion. It is pushed down to fall down. And an engagement flap and the surface fastener of a cover part engage. Thereby, between the bendable peripheral wall part and the cover part is shielded by the engagement flap, the generation of a gap is prevented, and the cold insulation performance is improved.

  Further, according to the present invention, the engagement flap is biased upward from the lateral direction. Therefore, it is possible to naturally engage the engagement flap and the surface fasteners of the lid portion only by rotating the lid portion toward the closed posture against the urging force of the engagement flap.

  In the present invention, as a configuration for biasing the engagement flap upward from the lateral direction, for example, a material (cloth) having a restoring force is used for the engagement flap, and the engagement flap can be bent. A configuration can be adopted in which the sheet material on the upper edge of the peripheral wall portion is sewn substantially upward. According to this configuration, the engagement flap does not hang downward even when used for a long time, and it is possible to reliably engage the hook-and-loop fasteners only by rotating the lid portion toward the closed position. .

  Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

The invention according to claim 3 includes four peripheral wall portions connected in a rectangular shape so as to be bendable to each other, and two surfaces connected so as to be bendable along the upper edges of the two peripheral wall portions facing each other. A lid, and two bottom surfaces connected to bendable along the lower edge of the two peripheral walls connected to the lid, the peripheral wall, the lid, and the bottom are Both are formed by including a flat vacuum heat insulating material in a sheet material, and the two peripheral wall portions adjacent to the connected peripheral wall portions of the lid portion and the bottom surface portion are folded in a substantially central portion extending in the height direction. The vacuum heat insulating material is divided along the line and can be bent along the fold line, and the peripheral wall portion, the lid portion and the bottom surface portion contain the vacuum heat insulating material and remain connected. It can be assembled into a box or folded and overlapped. A flexible engagement flap having a surface fastener along the surface fastener is provided in a state of being biased upward from the lateral direction, and the surface fastener is provided on the lid portion of the two surfaces corresponding to the surface fastener. When the lid portion of the two surfaces is rotated toward the closed posture, the lid portion comes into contact with the engagement flap while pressing down the engagement flap, and the surface fasteners are engaged with each other. The lid portion and the bottom surface portion are rotated in a closed posture and engaged with each other to form a box, and when not in use, the engagement between the lid portion and the bottom surface portion is released, and the bottom surface portion is inward of the peripheral wall portion or the peripheral wall portion Bending outward and bending the lid portion inward or outward of the peripheral wall portion, and bending adjacent peripheral wall portions inward along the fold line between adjacent peripheral wall portions Can be folded by overlapping the lid, peripheral wall and bottom With each other to produce a collapsible cold container.

According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

According to the present invention, the engagement flap is provided along the upper edge of the bendable peripheral wall portion. Therefore, when the lid portion is rotated toward the closed position, the engagement flap is inward by the inner surface of the lid portion. It is pushed down to fall down. And an engagement flap and the surface fastener of a cover part engage. Thereby, between the bendable peripheral wall part and the cover part is shielded by the engagement flap, the generation of a gap is prevented, and the cold insulation performance is improved.

Further, according to the present invention, the engagement flap is biased upward from the lateral direction. Therefore, it is possible to naturally engage the engagement flap and the surface fasteners of the lid portion only by rotating the lid portion toward the closed posture against the urging force of the engagement flap.

In the present invention, as a configuration for biasing the engagement flap upward from the lateral direction, for example, a material (cloth) having a restoring force is used for the engagement flap, and the engagement flap can be bent. A configuration can be adopted in which the sheet material on the upper edge of the peripheral wall portion is sewn substantially upward. According to this configuration, the engagement flap does not hang downward even when used for a long time, and it is possible to reliably engage the hook-and-loop fasteners only by rotating the lid portion toward the closed position. .

Therefore, it is possible to provide a foldable cold storage container that can improve the shielding performance of the cold storage container and can be easily assembled and folded while improving the cold storage bear.

According to a fourth aspect of the present invention, in the foldable cold storage container according to any one of the first to third aspects, the engaging flap is made of a waterproof fabric.

  According to the present invention, the engagement flap is made of a waterproof fabric. Thereby, it is prevented that water penetrates into the engagement flap, and durability is improved.

  In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

According to a fifth aspect of the present invention, in the foldable cold storage container according to any one of the first to fourth aspects, when folded, the bottom surface portion is bent inward of the peripheral wall portion. A flexible bottom sheet covering the entire outer surface is attached along the lower edge of the four peripheral walls.

  According to the present invention, the entire outer surface of the bottom portion is covered with the bottom sheet. As a result, when the bottom surface portions are in a closed posture, even if a gap is generated between the bottom surface portions or between the bendable peripheral wall portion and the bottom surface portion, communication between the inside and outside is blocked by the bottom surface sheet, and the cold insulation performance is improved. Not damaged.

  Moreover, even if the ice adhering to the stored frozen goods melts and the water flows inside, the bottom sheet can prevent the outflow to the outside of the cold storage container.

  Further, according to the present invention, since the bottom surface portion is folded inwardly into the peripheral wall portion and folded, the bottom sheet is not obstructed when folded, and the bottom sheet has flexibility, so that the peripheral wall is folded when folded. It can be easily stored inside the unit.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding property of the cold storage container.

According to a sixth aspect of the present invention, there are provided four peripheral wall portions connected in a rectangular shape so as to be bendable with each other, a lid portion connected in a foldable manner along the upper edge of the peripheral wall portion, and a lower portion of the peripheral wall portion. A bottom part connected in a foldable manner along a side edge, and the peripheral wall part, the lid part and the bottom part are all formed by including a flat vacuum heat insulating material in a sheet material, and the lid part The two peripheral wall portions adjacent to the connected peripheral wall portions of the bottom surface portion are divided into vacuum insulating materials along a fold line extending in the height direction at a substantially central portion, and the peripheral wall along the fold line. The part can be bent, and the peripheral wall part, the cover part and the bottom part can be assembled into a box, or folded and overlapped with the vacuum heat insulating material included and connected. When folded, the bottom portion is configured to bend inward into the peripheral wall, and when used, A flexible bottom sheet covering the entire outer surface of the bottom surface portion is attached along the lower edge of the peripheral wall portion of the four surfaces, and when in use, the lid portion and the bottom surface portion are rotated to a closed posture. When not in use, the lid part and the bottom part are disengaged, the bottom part is bent inward to the peripheral wall part, and the lid part is inward of the peripheral wall part or outward of the peripheral wall part. It is possible to fold and fold the lid part, the peripheral wall part and the bottom face part by bringing the adjacent peripheral wall parts close to each other while bending the peripheral wall part that can be bent inward along the folding line. This is a foldable cold storage container configured.

According to the present invention, since all of the four peripheral wall portions, the lid portion, and the bottom surface portion are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited. Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

According to the present invention, the entire outer surface of the bottom portion is covered with the bottom sheet. As a result, when the bottom surface portions are in a closed posture, even if a gap is generated between the bottom surface portions or between the bendable peripheral wall portion and the bottom surface portion, communication between the inside and outside is blocked by the bottom surface sheet, and the cold insulation performance is improved. Not damaged.

Moreover, even if the ice adhering to the stored frozen goods melts and the water flows inside, the bottom sheet can prevent the outflow to the outside of the cold storage container.

Further, according to the present invention, since the bottom surface portion is folded inwardly into the peripheral wall portion and folded, the bottom sheet is not obstructed when folded, and the bottom sheet has flexibility, so that the peripheral wall is folded when folded. It can be easily stored inside the unit.

Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding property of the cold storage container.

The invention according to claim 7 includes four peripheral wall portions connected in a rectangular shape so as to be bendable to each other, and two surfaces connected so as to be bendable along the upper edges of the two peripheral wall portions facing each other. A lid, and two bottom surfaces connected to bendable along the lower edge of the two peripheral walls connected to the lid, the peripheral wall, the lid, and the bottom are Both are formed by including a flat vacuum heat insulating material in a sheet material, and the two peripheral wall portions adjacent to the connected peripheral wall portions of the lid portion and the bottom surface portion are folded in a substantially central portion extending in the height direction. The vacuum heat insulating material is divided along the line and can be bent along the fold line, and the peripheral wall portion, the lid portion and the bottom surface portion contain the vacuum heat insulating material and remain connected. Can be assembled into a box or folded and stacked, and when folded, the bottom part is inside the peripheral wall A flexible bottom sheet that covers the entire outer surface of the bottom surface during use is attached along the lower edge of the peripheral wall of the four surfaces. The lid portion and the bottom surface portion are turned to a closed posture and engaged with each other to form a box, and when not in use, the engagement between the lid portion and the bottom surface portion is released and the bottom surface portion is bent inward to the peripheral wall portion. The lid portion is bent inwardly or outwardly of the peripheral wall portion, and the peripheral wall portions adjacent to each other are brought close to each other while the peripheral wall portion that can be bent is bent inward along a fold line. It is a foldable cold storage container configured to be able to be folded by overlapping the portion, the peripheral wall portion, and the bottom surface portion.

According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

According to the present invention, the entire outer surface of the bottom portion is covered with the bottom sheet. As a result, when the bottom surface portions are in a closed posture, even if a gap is generated between the bottom surface portions or between the bendable peripheral wall portion and the bottom surface portion, communication between the inside and outside is blocked by the bottom surface sheet, and the cold insulation performance is improved. Not damaged.

Moreover, even if the ice adhering to the stored frozen goods melts and the water flows inside, the bottom sheet can prevent the outflow to the outside of the cold storage container.

Further, according to the present invention, since the bottom surface portion is folded inwardly into the peripheral wall portion and folded, the bottom sheet is not obstructed when folded, and the bottom sheet has flexibility, so that the peripheral wall is folded when folded. It can be easily stored inside the unit.

Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding property of the cold storage container.

The invention according to claim 8 is the foldable cold container according to any one of claims 5 to 7, wherein the bottom sheet is made of a waterproof fabric.

  According to the present invention, the bottom sheet that covers the outer surface of the bottom part is made of waterproof fabric. Thereby, it becomes possible to prevent the outflow of water from the cold container to the outside by the bottom sheet.

  In the present invention, as the fabric having water resistance, for example, a fabric in which a polyester material is waterproofed can be used.

According to a ninth aspect of the present invention, in the foldable cold storage container according to any one of the first to eighth aspects, a flexible inner lid is provided inside the lid portion, and the inner lid is a lid It is attached along the upper edge of the peripheral wall part to which one of the parts is connected, and the length of the inner lid is equal to or longer than the length to the lower end of the inner surface of the opposing peripheral wall part.

  According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

  In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

  In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

  Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

The invention according to claim 10 is a four-surface peripheral wall portion connected in a rectangular shape so as to be bendable with each other, a lid portion connected in a foldable manner along the upper edge of the peripheral wall portion, and a lower portion of the peripheral wall portion. A bottom part connected in a foldable manner along a side edge, and the peripheral wall part, the lid part and the bottom part are all formed by including a flat vacuum heat insulating material in a sheet material, and the lid part The two peripheral wall portions adjacent to the connected peripheral wall portions of the bottom surface portion are divided into vacuum insulating materials along a fold line extending in the height direction at a substantially central portion, and the peripheral wall along the fold line. The part can be bent, and the peripheral wall part, the cover part and the bottom part can be assembled into a box or can be folded and overlapped with the vacuum heat insulating material included and connected. A flexible inner lid is provided inside the lid portion, and the inner lid is connected to the lid portion. The inner lid is attached along the upper edge of the peripheral wall portion that is connected, and the length of the inner lid is not less than the length to the lower end of the inner surface of the opposed peripheral wall portion, and the lid portion and the bottom portion are closed during use. The box is rotated and engaged to form a box. When not in use, the lid and the bottom are disengaged, the bottom is bent inwardly or outwardly of the peripheral wall, and the lid The peripheral wall portion is bent inwardly or outwardly of the peripheral wall portion, and the peripheral wall portions adjacent to each other are brought close to each other while bending the peripheral wall portion that can be bent inwardly along a fold line. It is a foldable cold storage container that is configured to be foldable by overlapping the portion and the bottom portion.

According to the present invention, since all of the four peripheral wall portions, the lid portion, and the bottom surface portion are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited. Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

According to an eleventh aspect of the present invention, there are provided four peripheral wall portions connected in a rectangular shape so as to be bendable with each other, and two surfaces connected in a bendable manner along the upper edge of the two opposing peripheral wall portions. A lid, and two bottom surfaces connected to bendable along the lower edge of the two peripheral walls connected to the lid, the peripheral wall, the lid, and the bottom are Both are formed by including a flat vacuum heat insulating material in a sheet material, and the two peripheral wall portions adjacent to the connected peripheral wall portions of the lid portion and the bottom surface portion are folded in a substantially central portion extending in the height direction. The vacuum heat insulating material is divided along the line and can be bent along the fold line, and the peripheral wall portion, the lid portion and the bottom surface portion contain the vacuum heat insulating material and remain connected. It can be assembled into a box or folded and stacked, and a flexible inner lid is inside the lid. The inner lid is attached along the upper edge of the peripheral wall portion to which one of the lid portions is connected, and the length of the inner lid is equal to or longer than the lower end of the inner surface of the opposed peripheral wall portion. When in use, the lid and bottom surface of the two surfaces are turned into a closed posture and engaged with each other to form a box, and when not in use, the engagement between the lid and bottom surface is released, and the bottom surface The lid portion is bent inward or outward of the peripheral wall portion, and the bendable peripheral wall portion is bent inward along the folding line. While the adjacent peripheral wall portions are brought close to each other, the lid portion, the peripheral wall portion, and the bottom surface portion are overlapped with each other so that the foldable cooler can be folded.

According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

According to the present invention, by providing the inner lid inside the lid portion, it is possible to improve the cold insulation performance by improving the inner and outer shielding properties.

In addition, according to the present invention, even when frozen goods are stored in a part of the cold storage container, since the inner lid has the length, it can be reliably covered to the bottom surface portion by the inner lid, It is possible to improve the cooling performance.

In the present invention, the inner lid can be formed using a flexible sheet material. It is also possible to include a heat insulating material (vacuum heat insulating material) inside the sheet material to improve the heat insulating property by the inner lid.

Therefore, it is possible to provide a foldable cold storage container having improved cold storage performance by improving the shielding properties inside and outside the cold storage container.

The invention according to claim 12 is the folding cold-reserving container according to any one of claims 9 to 11 , wherein the cold storage agent is applied to at least one inner surface of the lid, the peripheral wall, the bottom, or the inner lid. It is set as the structure which provided the cool storage agent accommodating part to accommodate.

  According to the present invention, the cool storage agent does not move inside the cold storage container during delivery, and the sheet material and the frozen product are not damaged by the transfer of the cool storage agent.

  The cool storage agent storage part can be formed, for example, by attaching a mesh-like net material or the like to the inner surface of the peripheral wall part, and the cool storage agent can be easily inserted without impairing the cooling effect.

  Moreover, in the structure which provides an inner cover inside a cold storage container, it is good to provide a cool storage agent accommodating part in the inner surface of the surrounding wall part to which an inner cover is attached. By providing the cool storage agent storage part in this part, the cool storage agent and the frozen product stored can be easily covered with the inner lid, and the cold insulation performance can be further improved.

  Therefore, it is possible to easily store the regenerator and to provide a foldable cooler container with improved workability.

The invention described in claim 13 is the foldable cold storage container according to any one of claims 1 to 12 , further comprising a protective container that houses the foldable cold storage container, and the protective container includes a box body in use. The folded refrigerated container is accommodated, and a plurality of foldable chilled containers folded when not in use can be accommodated.

  The cold storage container of the present invention can obtain the strength and rigidity of the cold storage container alone by using a vacuum heat insulating material having predetermined strength and rigidity. However, there is a risk that an excessive external force is applied to the cold storage container during delivery. In addition, when the cool containers are stacked in multiple stages during delivery, the strength may be insufficient.

  According to the present invention, by storing the cold storage container in the protective container, no external force is directly applied to the cold storage container, and damage to the cold storage container is prevented.

  Further, even when the cold storage containers are stored in the protective containers and stacked in multiple stages, the weight on the upper side is supported by the protective containers, and no load is directly applied to the cold storage containers. Thereby, it is possible to prevent breakage of the cold container. In this case, working efficiency such as loading can be further improved by adopting a structure in which the protective containers are stacked and engaged.

  Moreover, according to this invention, the several cold storage container folded at the time of non-use can be accommodated in the inside of a protective container, and collection | recovery and storage of a cold storage container can be performed efficiently.

  The protective container is lightweight and can be provided with sufficient strength and rigidity by being made of a synthetic resin molded product or the like. Further, by making the protective container foldable, collection after delivery can be easily performed, and storage space is also reduced.

  Therefore, it is possible to reduce the external force applied to the foldable cool container and improve the durability, and to easily carry and store the foldable cool container.

According to a fourteenth aspect of the present invention, there are provided four peripheral wall portions that are connected to each other in a rectangular shape so as to be bent, a lid portion that is connected to bendable along an upper edge of the peripheral wall portion, and a lower portion of the peripheral wall portion. A foldable cold storage container that is housed in a protective container, and the peripheral wall portion, the lid portion, and the bottom surface portion are all flat on the sheet material. The two peripheral wall portions facing each other adjacent to the peripheral wall portion connected to the lid portion and the bottom surface portion are vacuumed along a fold line extending in the height direction at a substantially central portion. The heat insulating material is divided so that the peripheral wall portion can be bent along the fold line, and the peripheral wall portion, the lid portion, and the bottom surface portion are assembled while including the vacuum heat insulating material and connected to each other. Can be boxed or folded and stacked, and when used, the lid And the bottom part is rotated and engaged in a closed position to form a box. When not in use, the lid part and the bottom part are disengaged, and the bottom part is folded inwardly or outwardly of the peripheral wall part. Bending and folding the lid portion inward or outward of the peripheral wall portion, bringing adjacent peripheral wall portions close to each other while bending the foldable peripheral wall portion inward along the fold line, The lid portion, the peripheral wall portion, and the bottom surface portion can be overlapped and folded, and the protective container accommodates the foldable cold storage container that is a box when in use, and a plurality of the folds that are folded when not in use It is a foldable cold storage container configured to be able to store a cold storage container.

According to the present invention, since all of the four peripheral wall portions, the lid portion, and the bottom surface portion are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited. Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

The cold storage container of the present invention can obtain the strength and rigidity of the cold storage container alone by using a vacuum heat insulating material having predetermined strength and rigidity. However, there is a risk that an excessive external force is applied to the cold storage container during delivery. In addition, when the cool containers are stacked in multiple stages during delivery, the strength may be insufficient.

According to the present invention, by storing the cold storage container in the protective container, no external force is directly applied to the cold storage container, and damage to the cold storage container is prevented.

Further, even when the cold storage containers are stored in the protective containers and stacked in multiple stages, the weight on the upper side is supported by the protective containers, and no load is directly applied to the cold storage containers. Thereby, it is possible to prevent breakage of the cold container. In this case, working efficiency such as loading can be further improved by adopting a structure in which the protective containers are stacked and engaged.

Moreover, according to this invention, the several cold storage container folded at the time of non-use can be accommodated in the inside of a protective container, and collection | recovery and storage of a cold storage container can be performed efficiently.

The protective container is lightweight and can be provided with sufficient strength and rigidity by being made of a synthetic resin molded product or the like. Further, by making the protective container foldable, collection after delivery can be easily performed, and storage space is also reduced.

Therefore, it is possible to reduce the external force applied to the foldable cool container and improve the durability, and to easily carry and store the foldable cool container.

According to the fifteenth aspect of the present invention, there are provided four peripheral wall portions connected in a rectangular shape so as to be bendable with each other, and two surfaces connected in a bendable manner along the upper edge of the two peripheral wall portions facing each other. A foldable cold storage container that is provided in a protective container and includes a cover and two bottom surfaces connected to bendable along the lower edge of the two peripheral walls connected to the cover. The peripheral wall portion, the lid portion, and the bottom surface portion are both formed by including a flat vacuum heat insulating material in the sheet material, and adjacent to the peripheral wall portion where the lid portion and the bottom surface portion are connected. The peripheral wall portion is divided along a fold line extending in the height direction at a substantially central portion so that the vacuum heat insulating material can be bent along the fold line, and the peripheral wall portion, the lid portion, and the bottom surface portion are formed in the vacuum. Assemble the box with heat insulation and keep it connected, or fold and stack When in use, the lid and bottom of the two surfaces are turned to a closed posture and engaged with each other to form a box, and when not in use, the engagement of the lid and bottom is released. The bottom portion is bent inward of the peripheral wall portion or outward of the peripheral wall portion, the lid portion is bent inward of the peripheral wall portion or outward of the peripheral wall portion, and the bendable peripheral wall portion is inward along the folding line. The peripheral wall portions adjacent to each other while being bent can be brought close to each other, and the lid portion, the peripheral wall portion, and the bottom surface portion can be overlapped and folded. It is a foldable cold storage container configured to be capable of storing a plurality of the foldable cold storage containers folded when not in use.

According to the present invention, since all of the four peripheral wall portions, the two lid portions, and the two bottom surface portions are formed by enclosing the vacuum heat insulating material in the sheet material, high cold insulation performance is exhibited.

Moreover, according to this invention, the surrounding wall part, the cover part, and the bottom face part are all connected so that bending is possible. And in the state where it was connected, it can be assembled into a box or folded and overlapped. This eliminates the need for attaching or removing another member, and can significantly reduce the effort required for assembly and folding. Moreover, since each part is connected, there is no possibility of losing a part of member.

Further, according to the present invention, since each surface is formed of a sheet material including a vacuum heat insulating material, the strength and rigidity of each surface are high, and the strength and rigidity when assembled into a box body are improved. Further, when folding, the bendable peripheral wall portion is bent inward along the fold line. Thereby, it can fold compactly, without the surrounding wall part which can be bent protrudes from the adjacent surrounding wall part, and is convenient for collection | recovery and storage.

Therefore, it is possible to provide a foldable cold storage container that can be easily assembled during use and exhibits excellent cold storage performance, and can be easily folded and collected and stored in a short time when not in use.

The cold storage container of the present invention can obtain the strength and rigidity of the cold storage container alone by using a vacuum heat insulating material having predetermined strength and rigidity. However, there is a risk that an excessive external force is applied to the cold storage container during delivery. In addition, when the cool containers are stacked in multiple stages during delivery, the strength may be insufficient.

According to the present invention, by storing the cold storage container in the protective container, no external force is directly applied to the cold storage container, and damage to the cold storage container is prevented.

Further, even when the cold storage containers are stored in the protective containers and stacked in multiple stages, the weight on the upper side is supported by the protective containers, and no load is directly applied to the cold storage containers. Thereby, it is possible to prevent breakage of the cold container. In this case, working efficiency such as loading can be further improved by adopting a structure in which the protective containers are stacked and engaged.

Moreover, according to this invention, the several cold storage container folded at the time of non-use can be accommodated in the inside of a protective container, and collection | recovery and storage of a cold storage container can be performed efficiently.

The protective container is lightweight and can be provided with sufficient strength and rigidity by being made of a synthetic resin molded product or the like. Further, by making the protective container foldable, collection after delivery can be easily performed, and storage space is also reduced.

Therefore, it is possible to reduce the external force applied to the foldable cool container and improve the durability, and to easily carry and store the foldable cool container.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view showing a foldable cold insulation container 1 according to the present embodiment, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a state in which a lid portion of the cold insulation container 1 in FIG. 4 is a sectional view taken in the direction of arrow C in FIG. 3, FIG. 5 is a sectional view taken in the direction of arrow EE in FIG. 3, and FIG. 6 is a sectional view taken in the direction of arrow BB in FIG. Sectional drawing which shows the state which cancelled | released, FIG.7 (a)-(e) is a perspective view which shows the procedure which folds the cold storage container 1 of FIG. 8A is a perspective view showing a state in which the cold insulation container 1 of FIG. 1 is housed in a protective container, and FIGS. 8B and 8C show the cold insulation container 1 folded when not in use as a protective container. It is a perspective view which shows the state to accommodate.

  The foldable cold storage container 1 of the present embodiment is a foldable cold storage container that is a box when in use and can be folded when not in use.

  As shown in FIG. 1, the cold insulation container 1 of the present embodiment includes four peripheral wall portions 10, 10, 13, and 13 that are connected to each other in a square shape so that they can be bent, and two opposing peripheral wall portions 10, 10, two lids 16, 16 connected to bendable along the upper edges 11, 11, and a lower edge 12 of the two peripheral walls 10, 10 connected to the lids 16, 16. , 12 and two bottom surfaces 21 and 21 connected to each other so as to be bendable.

  In the present embodiment, the cover portion 16 has a length toward the facing cover portion 16, that is, a length L from the upper edge 11 of the peripheral wall portion 10 to the side edge 17 of the cover portion 16, and the peripheral wall portion 13. The lid portions 16, 16 on the two surfaces have the same shape. Further, the bottom surface portions 21 and 21 of the two surfaces have the same shape as the lid portion 16. Further, the length L of the lid portion 16 is shorter than the height H of the peripheral wall portion 10.

  Specifically, as shown in FIG. 1, the cold insulation container 1 of the present embodiment has a width W of 600 mm, a depth D of 400 mm, and a height H of 300 mm, and the length L of the lid portion 16 is substantially the same. The configuration is 200 mm and shorter than the height H. The internal volume of the cold container 1 is approximately 70 liters.

  As shown in FIG. 2, the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 are all formed by including a flat vacuum heat insulating material 31 in a sheet material 30.

  As shown in FIG. 2, the vacuum heat insulating material 31 covers a core material 32 made of at least one of a fiber material, a resin foam material, and a granular material with an outer covering material 33 having a gas barrier property. It is a heat insulating material formed by decompressing the inside and vacuum-sealing it.

  In the present embodiment, a laminate film formed by laminating a heat welding layer and a protective layer on the inside and outside of the gas barrier layer is used as the covering material 33. That is, the covering material 33 is a metal foil such as aluminum, or a metal or non-oxide deposited film as a gas barrier layer, and a film such as unstretched polypropylene is used as a heat welding layer on the inner surface side of the gas barrier layer. In addition to being laminated, a laminate film in which a film such as nylon or polyethylene terephthalate is laminated as a protective layer on the outer surface side of the gas barrier layer. Moreover, the core material 32 used what heat-molded the fiber material using the binder.

  In the present embodiment, the vacuum heat insulating material 31 having such a configuration, which has a thermal conductivity (initial thermal conductivity) of 0.005 W / mK and a thickness of about 10 mm, is used. Thereby, while ensuring the high heat insulation in the surrounding wall part 10, the cover part 16, and the bottom face part 21, the said part is aimed at thickness reduction.

  The sheet material 30 is formed by sewing a polyester fabric with a synthetic resin coat on the back surface, and has water resistance, waterproofness and flexibility.

  In the present embodiment, a sheet having a thickness of 4 mm is provided on the outer wall surface of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 when the cold insulation container 1 is used or not used, as shown in FIG. A material 30a is used, and a sheet material 30b having a thickness of 2 mm is used on the other surface.

  In other words, each of the peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 of the cold insulation container 1 has the vacuum heat insulating material 31 inside the sheet material 30 sewn in a bag shape having water resistance, waterproofness, and flexibility. It is an enclosed structure. The peripheral wall portion 10, the lid portion 16, and the bottom surface portion 21 can be bent by connecting the side edges of the sheet material 30 to each other by sewing.

  Further, as shown in FIG. 1, the two peripheral wall portions 13, 13 adjacent to the peripheral wall portions 10, 10 connected to the lid portion 16 and the bottom surface portion 21 are formed by folding lines 23 extending in the height direction substantially at the center portion. The vacuum heat insulating material is divided along the folding line 23, and the peripheral wall portion 13 can be bent along the folding line 23.

  That is, the peripheral wall portion 13 is formed by storing the two vacuum heat insulating materials 31 and 31 inside the sheet material 30 sewn in a bag shape and sewing the sheet material 30 along the fold line 23. It is possible to bend along the line 23.

  As shown in FIGS. 1 and 3, one lid portion 16 is provided with a flexible engagement flap 18 having a surface fastener 18 a along the side edge 17, and the other lid portion 16 has A hook-and-loop fastener 20 is provided so as to correspond to the engagement flap 18 of one lid portion 16. The engagement flap 18 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing the surface fastener 18a on the sheet material 30b.

  As shown in FIGS. 1 and 3, a flexible engagement flap 24 having a surface fastener 24 a is provided substantially upward along the upper edge 14 on the two peripheral wall portions 13 that can be bent. It is attached by sewing in a state of being biased toward. The engagement flap 24 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 24a on the sheet material 30b.

  Further, surface fasteners 19, 19 are provided on the inner surfaces of the two lid portions 16, 16 so as to correspond to the surface fasteners 24 a of the engagement flap 24.

  The bottom surface portion 21 has the same basic structure as the lid portion 16. That is, as shown in FIGS. 1 and 6, one bottom surface portion 21 is provided with a flexible engagement flap 22 having a surface fastener 22 a along a side edge 29. In addition, a hook-and-loop fastener 28 is provided on the other bottom surface portion 21 so as to correspond to the engagement flap 22 of the one bottom surface portion 21. The engagement flap 22 also uses the above-described sheet material 30b (thickness 2 mm, see FIG. 2), and is formed by sewing a surface fastener 22a on the sheet material 30b.

  As shown in FIGS. 1 and 6, on the outer surface side of the bottom surface portion 21, a flexible bottom sheet 27 that covers the entire outer surface is provided. In other words, the bottom sheet 27 is a rectangular sheet that is substantially equal to the outer shape of the two bottom surface portions 21, and its four sides are sewn along the lower edges 12 and 15 of the peripheral wall portions 10 and 13 and attached. It has been. In the present embodiment, the sheet material 30b (thickness 2 mm, see FIG. 2) is used for the bottom sheet 27 as well.

  An inner lid 25 is provided inside the cold insulation container 1. The inner lid 25 is a rectangular sheet material having flexibility. As shown in FIGS. 1 and 5, one side of the inner lid 25 is attached by sewing along the upper edge 11 of the peripheral wall portion 10 to which the lid portion 16 is connected. It has been. The inner lid 25 is a shielding material for assisting the shielding by the lid portion 16.

  In the present embodiment, the inner lid 25 has a width substantially equal to the width W of the cold container 1 as shown in FIG. 1, and the length is the length to the opposing peripheral wall portions 10 as shown in FIG. 5. The sum of the height D and the height H of the peripheral wall 10 is greater than or equal to the sum. By setting the inner lid 25 to this size, as shown in FIG. 5, even when the frozen products S1 to S4 are stored in a part of the inside of the cold insulation container 1 and a gap is generated, all of the frozen products S1 to S4 are removed. It can be covered with the inner lid 25, and the shielding effect is increased.

  In addition, a cool storage agent storage unit 26 that stores a cool storage agent is provided inside the cold insulation container 1. The cool storage agent storage section 26 is a bag formed using a mesh net material as shown in FIGS. 1 and 5, and the cool storage agent 34 can be stored therein as shown in FIG. 5. In the present embodiment, the regenerator storage portion 26 is provided on the inner surface of the peripheral wall portion 10 to which the inner lid 25 is connected. Thereby, the cool storage agent 34 and frozen goods S1-S4 can be easily covered with the inner cover 25, and the cold preservation performance and shielding property of frozen goods S1-S4 are aimed at.

  In addition, the cool storage agent storage part 26 can be provided not only on the inner surface of the peripheral wall part 10 but also on the inner surfaces of the peripheral wall part 13 and the lid part 16.

  In the present embodiment, the cool storage agent storage unit 26 can store two cool storage agents 34 having a melting point of −27 ° C. to −18 ° C. and a weight of 1 kg. Moreover, the cool storage agent 34 used in this embodiment is “CAH-1001 minus 25 ° C. grade” manufactured by Inoac Corporation.

  Next, an assembling procedure at the time of using the cold insulating container 1 of the present embodiment will be described.

  First, as shown in FIG. 6, the bottom surface portions 21 and 21 are rotated to the closed posture (horizontal direction), and the side edges 29 and 29 are brought into contact with each other as shown in FIG. Then, the engagement flap 22 provided on one bottom surface portion 21 is pressed against the other bottom surface portion 21 so that the surface fastener 22a of the engagement flap 22 and the surface fastener 28 of the other bottom surface portion 21 are engaged with each other.

  When the bottom surface portions 21 and 21 are engaged in this way, a substantially flat surface is formed by both bottom surface portions 21 as shown in FIG. 5, and the bottom sheet 27 is positioned below the bottom surfaces 21 and 21 so as to cover the entire surface. To do. Accordingly, even when a slight gap is generated between the bottom surface portion 21 and the peripheral wall portion 13, the communication between the inside and the outside is blocked by the bottom surface sheet 27, and the cold insulation performance is not impaired.

  In the present embodiment, the bottom sheet 27 is made of a water-resistant and waterproof sheet material 30b to prevent water staying inside from flowing out of the container.

  Next, as shown in FIG. 5, the cold storage agent 34 is stored in the cold storage agent storage unit 26 as necessary, and frozen products S1 to S4 such as frozen food to be delivered are stored inside, and the frozen product S1 is stored. Put the inner lid 25 to cover ~ S4.

  Here, in the present embodiment, the regenerator 34 having a melting point of −27 ° C. or higher and −18 ° C. or lower is used. Usually, in a wholesaler or a distribution center that delivers small roe, the temperature of a freezer warehouse is often controlled to about −30 ° C. to −22 ° C. Therefore, the cold storage agent 34 having the melting point in the above range is used so that the cold storage agent 34 can be solidified only by storing in the freezer warehouse. Thereby, at the time of delivery, it becomes possible to immediately store the refrigerating agent stored in the refrigeration warehouse and solidified in the cold insulation container 1 for cold preservation.

  When all the frozen products S1 to S4 to be stored are stored, the lid portions 16 and 16 are rotated to the closed posture (substantially horizontal direction). As shown in FIG. 3, when the lid portions 16 and 16 are turned inward, the engagement flap 24 provided on the peripheral wall portion 13 substantially upward is pressed by the turning of the lid portion 16 to be The hook-and-loop fastener 24a of the engagement flap 24 and the hook-and-loop fastener 19 of the lid 16 are engaged with each other.

  When both the lid portions 16 and 16 are moved to the closed posture, the entire surface fastener 24a of the engagement flap 24 is engaged with the surface fastener 19 of the lid portion 16, and the gap between the lid portion 16 and the peripheral wall portion 13 is established. It is shielded by the engagement flap 24.

  Moreover, when the cover parts 16 and 16 are moved to a closed position, the side edges 17 and 17 of the cover parts 16 and 16 will face each other like FIG. Finally, the engagement flap 18 provided on one lid 16 is pressed against the other lid 16 to engage the surface fasteners 18a and 20 with each other. Thereby, the abutting part of the side edges 17 and 17 of the lid parts 16 and 16 is covered with the engagement flap 18.

  In other words, the cold insulation container 1 of the present embodiment can be obtained by simply rotating the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture and engaging them with the engagement flaps 22 and 18 as shown in FIG. As described above, a box surrounded by the peripheral wall portions 10 and 13, the bottom surface portion 21, and the lid portion 16 including the vacuum heat insulating material 31 is formed.

  As shown in FIG. 5, the formed box is covered with the engagement flap 22 at the abutting portion between the side edges 29 and 29 of the bottom surface portions 21 and 21, and the outer surface of the bottom surface portion 21 is the bottom sheet 27. Covered. Further, as shown in FIG. 4, the abutting portions of the lid portions 16 and 16 are covered with the engagement flap 18, and the gap between the lid portion 16 and the peripheral wall portion 13 is shielded by the engagement flap 24.

  As described above, the cold insulation container 1 according to the present embodiment is assembled by moving the bottom surface portions 21 and 21 and the lid portions 16 and 16 to the closed posture, and the communication between the inside and the outside is completely blocked, and the entire surface is vacuum insulated. It is possible to immediately form a box body surrounded by materials and having a very high heat insulating property.

  In the present embodiment, by storing one cold storage agent having a melting point of −27 ° C. or more and −18 ° C. or less per 50 liters inside the cold insulation container 1, the average temperature of the atmosphere inside the cold insulation container 1 is set. It can be maintained at 0 ° C. or lower continuously for 10 hours or longer, and can be maintained at about −15 ° C. continuously for 10 hours or longer if replaced with the product temperature of a frozen product (for example, ice cream). Therefore, by delivering the cold storage container 1 in combination with the cold storage agent according to the present embodiment, it is possible to maintain the frozen product at a low temperature and perform long-distance delivery without damaging the quality. In addition, you may substitute at least one part of a cool storage agent with dry ice.

  Next, the folding procedure of the cold insulation container 1 when not in use will be described.

  The cold storage container 1 is folded, for example, when the cold storage container 1 is emptied after delivery or when the cold storage container 1 is stored and returned to the delivery source. In the following description of the folding procedure, it is assumed that the cool storage agent 34 stored in the cool storage agent storage unit 26 has been taken out.

  At the time of folding, first, as shown in FIG. 7A, the engagement flap 24 of the lid portion 16 of the cold insulation container 1 which is a box is grasped and pulled up. 7B, the engagement of the surface fastener 18a of the engagement flap 18 and the surface fastener 20 of the lid portion 16, and the engagement of the surface fastener 24a of the engagement flap 24 and the surface fastener 19 of the lid portion 16. The lids 16 and 16 are rotated to the open posture while releasing the engagement.

  Next, as shown in FIG. 6 and FIG. 7C, the inner lid 25 is moved toward the cold storage agent storage part 26 side, the engagement flap 22 of the bottom surface part 21 is grasped and pulled up, and the surface fastener 22a of the engagement flap 22 The engagement of the hook-and-loop fastener 28 of the bottom surface portion 21 is released. 7D, the bottom surface portions 21 and 21 are folded on the inner surfaces of the peripheral wall portions 10 and 10, and the lid portions 16 and 16 are folded on the outer surfaces of the peripheral wall portions 10 and 10, respectively.

  Subsequently, as shown in FIG. 7D, the peripheral wall portions 10 are brought close to each other while being bent inward along the fold line 23. As a result, as shown in FIG. 7E, the four surfaces of the lid portion 16, the peripheral wall portion 10, the bottom surface portion 21, and the bent peripheral wall portion 13 are overlapped in order from the outside, and all eight surfaces overlap. Folding is completed in the state.

  As described above, the cold insulation container 1 of the present embodiment can be folded very easily and compactly in a short time without attaching / detaching a member such as a heat insulating panel as in the prior art.

  When the cold insulation container 1 is folded, as shown in FIG. 7E, a total of eight surfaces of the lid portions 16 and 16, the peripheral wall portions 10 and 10, the bottom surface portions 21 and 21 and the peripheral wall portions 13 and 13 are folded. Become.

  Further, as described above, in the present embodiment, the length L (200 mm) of the lid portion 16 and the bottom surface portion 21 is shorter than the height H (300 mm) of the peripheral wall portions 10 and 13. Thereby, when the cold insulation container 1 is folded, it becomes a shape in which the eight surfaces are overlapped with the peripheral wall portion 10 as the maximum outer dimension.

  Further, the cold insulation container 1 of FIG. 1 uses the thick sheet material 30a shown in FIG. 2 for all surfaces located on the outside side when in use or not in use. That is, the thick sheet material 30a shown in FIG. 2 is employed on the outer surface side of the peripheral wall portion 10, the peripheral wall portion 13, and the bottom surface portion 21, and on the inner surface and outer surface side of the lid portion 16, respectively.

  More specifically, the lid portion 16 has a thickness of 18 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thickness (4 mm + 4 mm) of the sheet material 30a that encloses it. The peripheral wall portions 10 and 13 have a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Further, the bottom surface portion 21 has a thickness of 16 mm, which is the sum of the thickness (10 mm) of the vacuum heat insulating material 31 and the thicknesses (4 mm + 2 mm) of the sheet materials 30a and 30b enclosing it. Therefore, when the eight surfaces are folded and overlapped, the total thickness becomes approximately 132 mm.

  In other words, when the cold insulation container 1 of the present embodiment is folded, the outer dimension (W600 mm × H300 mm) of the peripheral wall portion 10 can be the maximum outer dimension, and the thickness can be reduced to approximately 132 mm. Compared to this, it can be made extremely compact. Thereby, it is also possible to store a plurality of folded cold insulation containers 1 in a general-purpose roll pallet or the like and easily move them.

  Further, as described above, the thick sheet material 30a is used for all the surfaces positioned on the outside side when in use or not in use.

  Accordingly, when the box is formed in use, the vacuum heat insulating material 31 included in each surface is protected from external force by the thick sheet material 30a. When folded when not in use, the inner surface of the lid portion 16 is protected from external force by the thick sheet material 30a. Thereby, it is possible to protect the vacuum heat insulating material 31 from external force both at the time of use and at the time of non-use, prevent the vacuum heat insulating material 31 from being damaged, and improve the durability.

  Here, as described above, the cold insulation container 1 of the present embodiment is formed by the lid portion 16, the peripheral wall portions 10 and 13 and the bottom surface portion 21 including the vacuum heat insulating material 31 having predetermined strength and rigidity. Therefore, even when the cold container 1 is used alone, a certain degree of strength and rigidity can be obtained. However, the durability of the cold insulation container 1 can be remarkably improved by storing the cold insulation container 1 in a protective container having higher strength and rigidity and using it as a set.

  For example, as shown in FIG. 8 (a), it is possible to prepare a protective container 2 that can completely store the cold insulating container 1, and to store the cold insulating container 1 that is a box at the time of delivery and use it as a set. .

  The protective container 2 shown in FIG. 8 (a) is manufactured by molding a synthetic resin material, has a box shape with the top opened, and is extremely lightweight. The protective container 2 is formed with flange portions 2a and 2b by projecting the outer surfaces of the upper and lower portions over the entire circumference. Therefore, the protective container 2 can be easily carried using the flange portion 2a as a clue. In addition, the lids 16 and 16 can be opened and closed by grasping the engagement flap 18 while the cold container 1 is stored in the protective container 2.

  In addition, the flange portion 2b of the protective container 2 is overlapped with the flange portion 2a of another protective container 2 and can be engaged, and the protective containers 2 can be stacked in multiple stages. Therefore, even when a large number of protective containers 2 containing the cold storage containers 1 are loaded on a delivery vehicle, the loading space can be effectively used by stacking them in multiple stages, and an excessive load is not directly applied to the cold storage containers 1. There is no damage.

  As described above, the durability of the cold insulation container 1 can be remarkably improved by using the cold insulation container 1 together with the reduced weight protective container 2 as a set.

  Furthermore, as shown in FIG.7 (e), the cold insulation container 1 can be folded in the shape where eight surfaces were piled up by making the surrounding wall part 10 into the largest outer dimension. Accordingly, as shown in FIGS. 8B and 8C, a plurality of folded cold storage containers 1... Can be stored in one protective container 2.

  As a result, a plurality of cold storage containers 1 can be collectively stored in the protective container 2 and easily carried, and preparation work and collection work for delivery can be performed efficiently. In addition, a plurality of cold storage containers 1 can be arranged and stored in the protective container 2, and the storage space can be reduced.

  Although the protective container 2 shown in FIG. 8 has been described as being formed in a box shape, the protective container 2 can be folded to facilitate carrying the protective container 2 during preparation and collection. The storage space can also be reduced.

  The foldable cold storage container of the present invention is suitable for uses such as cold transport of frozen goods because it can be easily collected and stored when not in use, while having excellent cold storage performance.

The perspective view which shows the folding-type cold storage container which concerns on embodiment of this invention AA arrow sectional view of FIG. The perspective view which shows the state which closes the cover part of the cold storage container of FIG. C direction arrow view of FIG. EE arrow cross-sectional view of FIG. Sectional drawing which shows the state which canceled the engagement of the bottom face part in the BB arrow sectional drawing of FIG. (A)-(e) is a perspective view which shows the procedure which folds the cold storage container of FIG. (A) is a perspective view which shows the state which accommodated the cold storage container of FIG. 1 in the protection container, (b), (c) is a perspective view which shows the process in which the folded cold storage container is accommodated in a protection container. The perspective view which shows the conventional cold storage container

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding type cold storage container 2 Protective container 10,13 Peripheral wall part 11,14 Upper edge 12,15 Lower edge 16 Lid part 17 Side edge 18 Engagement flap 18a Surface fastener 19 Surface fastener 20 Surface fastener 21 Bottom surface part 23 Folding line 24 Engagement flap 24a Surface fastener 25 Inner lid 26 Coolant storage part 27 Bottom sheet 30 Sheet material 31 Vacuum heat insulating material 32 Core material 33 Cover material 34 Coolant

Claims (18)

  It has four peripheral wall portions, a bottom surface portion, and a lid portion that can be opened and closed. Each of the portions is formed by including a flat vacuum heat insulating material in a sheet material, and in use, a box body is formed by the respective portions. And, when not in use, the foldable cold storage container that can be folded by overlapping the above parts. Four peripheral wall portions connected to each other in a square shape so as to be bendable, two lid portions connected so as to be bendable along the upper edge of the two opposing peripheral wall portions, and connection of the lid portions Two bottom surfaces connected in a foldable manner along the lower edge of the two peripheral wall portions,
The peripheral wall portion, the lid portion, and the bottom surface portion are all formed by including a flat vacuum heat insulating material in a sheet material, and the two peripheral wall portions adjacent to the peripheral wall portion connected to the lid portion and the bottom surface portion are The vacuum heat insulating material is divided along a fold line extending in the height direction in the substantially central portion, and can be bent.
When in use, the lid and bottom of the two surfaces are rotated to a closed position and engaged with each other to form a box, and when not in use, the engagement of the lid and bottom is released, and the bottom is Bends inward or outward of the peripheral wall portion, bends the lid portion in a direction opposite to the bottom surface portion, and adjoins the bendable peripheral wall portion inwardly along a fold line. A foldable cold storage container that can be folded by bringing the peripheral wall portions close to each other and overlapping the lid portion, the peripheral wall portion, and the bottom surface portion.   The one lid portion is provided with a flexible engagement flap having a surface fastener along a side edge engaged with the other lid portion, and the other lid portion has the engagement. A surface fastener is provided at a portion corresponding to the flap, and when the lid portions of the two surfaces are turned to the closed position, the side edges of both lid portions are brought into contact with each other, and the engagement flap of the one lid portion is connected to the other lid. The folding type cold storage container according to claim 2, wherein the hook-and-loop fasteners are brought into contact with each other to engage with each other.   On the peripheral wall portion of the two bendable surfaces, a flexible engagement flap having a surface fastener along the upper edge is provided in a state of being biased upward from the lateral direction, Corresponding to the hook-and-loop fastener, a hook-and-loop fastener is provided on the two-surface lid portion, and when the two-surface lid portion is rotated toward the closed position, the lid portion comes into contact with pressing down the engagement flap. The folding cold storage container according to claim 2 or 3, wherein the hook-and-loop fasteners are engaged with each other.   At the time of folding, the bottom portion is bent inward to the peripheral wall portion and the lid portion is bent outward from the peripheral wall portion, and has flexibility to cover the entire outer surface of the two bottom surface portions in use. The folding cold storage container as described in any one of Claims 2 thru | or 4 which attached the bottom sheet | seat along the lower side edge of the surrounding wall part of the said 4 surface.   The vacuum heat insulating material is configured such that a core material obtained by compression molding a fiber material is covered with a jacket material having a gas barrier property, and the inside covered with the jacket material is decompressed and vacuum-sealed. The foldable cool container according to any one of the above.   The foldable cold insulation container according to any one of claims 1 to 6, wherein the vacuum heat insulating material has a thickness of 2 mm or more and 20 mm or less.   The foldable cold insulation container according to any one of claims 1 to 7, wherein the vacuum heat insulating material has an initial thermal conductivity of 0.01 W / mK or less.   The folding cold storage container as described in any one of Claims 1 thru | or 8 in which the cool storage agent whose melting | fusing point is -27 degreeC or more and -18 degrees C or less is accommodated.   The folding cold storage container according to claim 9, wherein at least 1 kg of a regenerator per 50 liters of internal volume can be stored and the internal average temperature can be maintained at 0 ° C or lower for 10 hours or longer.   The folding cold storage container according to any one of claims 1 to 10, wherein the internal volume is 70 liters or more.   The foldable cold storage container according to any one of claims 1 to 10, wherein at least one of the sheet material, the engagement flap, and the bottom sheet is made of waterproof fabric.   13. The reinforcing structure is applied to at least one of the surfaces of the peripheral wall portion, the lid portion, and the bottom surface portion that is located on the outside side when in use or not in use. Foldable cold storage container as described in 1.   The collapsible cold storage container according to any one of claims 1 to 13, wherein a cold storage agent storage portion for storing a cold storage agent is provided on an inner surface of at least one of the lid portion, the peripheral wall portion, and the bottom surface portion.   A flexible inner lid is provided inside the lid portion, and the inner lid is attached along the upper edge of the peripheral wall portion to which one of the lid portions is connected, and the length of the inner lid is The foldable cold storage container according to any one of claims 1 to 13, wherein the foldable cold storage container has a length equal to or more than a length to a lower end of an inner surface of an opposing peripheral wall portion.   The foldable cold storage container according to claim 15, wherein a cold storage agent storage portion for storing a cold storage agent is provided on at least one inner surface of the lid portion, the peripheral wall portion, the bottom surface portion, or the inner lid.   The foldable cold insulation according to any one of claims 2 to 16, wherein the two lid portions and the two bottom surface portions each have a length toward the facing lid portion and the bottom surface portion that is shorter than the height of the peripheral wall portion. container.   A protective container for storing the foldable cold storage container is provided, and the protective container can store a foldable cold storage container that is a box when in use, and can store a plurality of foldable cold storage containers that are folded when not in use. The folding cold storage container as described in any one of Claims 1 thru | or 17.

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