JP6674285B2 - Insulated container - Google Patents

Description

  The present invention relates to a heat insulating container.

  2. Description of the Related Art A delivery assembly container including a pair of a first cover plate or a second cover plate and a protective cylinder has been conventionally known (see Patent Document 1 below). The pair of first cover plates or the second cover plates are cardboard in which a flange is integrally formed on the outer periphery of a flat portion that fits up and down with a bundle of products formed by combining squares, through a bottom fold. It consists of paper materials such as.

  The protective cylinder is formed by bonding an end of a paper material such as kraft paper or liner paper in accordance with the outer diameter and height of the product bundle, and is formed in a cylindrical shape. It is placed on the peripheral surface of the bundle of products located on the flat part of the two covers. Then, the pair of cover plates and the protective tube portion, in which the flat portions of the first and second cover plates are covered on the upper surface of the bundle of products, are packed in a circular shape using a binding band.

  In addition, it consists of a combination of a synthetic resin packaging side frame, a top cover and a bottom cover, and the top cover and the bottom cover are formed in the same shape, and can be attached to any of the upper and lower opening edges of the side frame. A packaging container characterized by being provided is disclosed (see Patent Document 2 below).

Japanese Utility Model Registration No. 3199046 Japanese Utility Model Publication No. 55-107024

  The assembly container for delivery described in Patent Literature 1 is a container made of a paper material for wrapping a bundle of products such as books, and is not suitable for transporting articles requiring temperature control. On the other hand, the packaging container described in Patent Literature 2 uses a synthetic resin packaging side frame, an upper lid and a bottom lid, and thus has a higher heat insulating property as compared with a delivery assembly container made of paper. And can be used for transporting articles that require temperature control.

  However, in the packaging container described in Patent Document 2, heat is compared between the outside of the container and the inside of the container through a gap between the side frame and the top lid and a gap between the side frame and the bottom lid. Move easily. Therefore, in order to use the packaging container described in Patent Document 2 for transporting, for example, medicines or the like, which requires strict temperature control over a long period of time, fitting of the side frame with the top cover and the bottom cover is required. The combined structure has room for improvement.

  The present invention has been made in view of the above-described problems, and provides a synthetic resin insulated container having a fitting structure capable of suppressing heat transfer between the outside of the container and the inside of the container as compared with the related art. The purpose is to provide.

  In order to achieve the above object, the heat insulating container of the present invention includes an upper container and a lower container, and an opening of the upper container and an opening of the lower container are fitted to form an insulating chamber inside the container. Wherein the upper container and the lower container have at least one of a first fitting portion and a second fitting portion around respective openings. The mating portion has a first convex portion protruding in the container height direction, and a second concave portion provided inward of the container with respect to the first convex portion and depressed in the container height direction. The joining portion has a first concave portion in which the first convex portion is fitted, and a second convex portion provided on the container inner side of the first concave portion and fitted in the second concave portion. I do.

  The heat-insulating container of the present invention is a container made of a synthetic resin including an upper container made of a synthetic resin and a lower container made of a synthetic resin, and as a material of each component, for example, a polystyrene resin, a polyethylene resin, A synthetic resin foam such as an ethylene-styrene copolymer or a polypropylene resin can be used.

  Each of the upper container and the lower container is, for example, a rectangular box-shaped container having a storage space inside which is a part of the heat insulating chamber. The upper container and the lower container have, for example, a rectangular cylindrical side wall, and have an end wall at one end of the side wall and an opening at the other end of the side wall in the container height direction. The insulated container is fitted from the outside of the container by the side wall and the end wall of the upper container and the side wall and the end wall of the lower container by fitting the opening of the upper container and the opening of the lower container so as to face up and down. An isolated insulated chamber is formed inside the container.

  The upper container and the lower container have at least one of the first fitting portion and the second fitting portion around each opening. More specifically, for example, a first fitting portion surrounding the opening is continuously provided over the entire periphery of the opening of the upper container, and the first fitting portion is provided over the entire periphery of the opening of the lower container. A second fitting portion surrounding the portion can be provided continuously. Also, for example, a second fitting portion surrounding the opening over the entire periphery of the opening of the upper container is continuously provided, and the second fitting portion surrounding the opening around the entire periphery of the opening of the lower container is provided. One fitting portion can be provided continuously.

  Further, first fitting portions and second fitting portions are provided alternately around the respective openings of the upper container and the lower container, and the first fitting portion and the second fitting portion entirely cover the periphery of the opening. It may be surrounded over the circumference. In this case, the positions of the first fitting portion and the second fitting portion are such that, when the opening of the upper container and the opening of the lower container face each other, the first fitting portion of the upper container and the second fitting portion of the lower container. The two fitting portions face each other, and the second fitting portion of the upper container and the first fitting portion of the lower container face each other.

  As described above, the first fitting portion includes the first convex portion protruding in the container height direction, and the second concave portion provided on the container inner side of the first convex portion and depressed in the container height direction. have.

  Here, the container height direction is the height direction of the heat insulating container, the laminating direction of the upper container and the lower container, and the direction substantially parallel to the side walls of the upper container and the lower container and substantially perpendicular to the end wall. is there. Further, the inside of the container means a position closer to the heat insulating chamber in a direction from the external space of the heat insulating container to the heat insulating chamber, and the outside of the container means a direction from the heat insulating chamber to the external space of the heat insulating container. Means a position closer to the outer space of the heat insulating container.

  The first convex portion of the first fitting portion is provided at the end of the side wall surrounding the opening on the side opposite to the end of the side wall connected to the end wall in the container height direction of the upper container or the lower container. It is provided so as to protrude in a direction away from the end wall. The first convex portion of the first fitting portion is provided so as to extend along the circumferential direction of the side wall surrounding the opening of the upper container or the lower container. It can be formed at the same position without any step along the outer surface of the side wall. The first convex portion of the first fitting portion has a convex shape corresponding to the concave shape of the first concave portion of the second fitting portion, and a gap is formed as much as possible with the first concave portion of the second fitting portion. The size and the shape are set so as to fit exactly into the first concave portion of the second fitting portion so as not to cause the first fitting portion.

  The second concave portion of the first fitting portion is provided at the end of the side wall surrounding the opening of the upper container or the lower container, on the inner side of the container than the first convex portion, and is formed on the end wall in the container height direction. It is provided to be depressed. The second concave portion of the first fitting portion can be formed, for example, in a groove shape extending along the circumferential direction of the side wall surrounding the opening of the upper container or the lower container. The second concave portion of the first fitting portion has a concave shape corresponding to the convex shape of the second convex portion of the second fitting portion, and a gap between the second concave portion of the second fitting portion and the second convex portion is minimized. The shape and dimensions are such that the second protrusion of the second fitting portion is fitted exactly so as not to cause the occurrence.

  The second fitting portion has a first concave portion for fitting the first convex portion of the first fitting portion at an end of a side wall surrounding the opening of the upper container or the lower container, and a first concave portion inside the container. And a second protrusion fitted to the second recess of the first fitting portion.

  The first concave portion of the second fitting portion is provided at an end of the side wall surrounding the opening at a side opposite to an end of the side wall connected to the end wall in the container height direction of the upper container or the lower container. , Sinking in the direction toward the end wall. The first concave portion of the second fitting portion can be formed, for example, in a stepped shape depressed from the outer surface of the side wall of the upper container or the lower container to the container inward, and along the circumferential direction of the side wall surrounding the opening. It can be formed to be stretched. The first concave portion of the second fitting portion has a concave shape corresponding to the convex shape of the first convex portion of the first fitting portion, and a gap between the first concave portion of the first fitting portion and the first convex portion is made as small as possible. The shape and dimensions are such that the first protrusions of the first fitting portion are fitted exactly so as not to cause the occurrence.

  The second convex part of the second fitting part is provided on the inner side of the container of the first concave part at an end of the side wall surrounding the opening of the upper container or the lower container, and moves away from the end wall in the container height direction. It is provided so as to protrude in the direction. The second convex part of the second fitting part is provided so as to extend along the circumferential direction of the side wall surrounding the opening of the upper container or the lower container. The second convex part of the second fitting part has a convex shape corresponding to the concave shape of the second concave part of the first fitting part, and a gap is formed as much as possible with the second concave part of the first fitting part. In order not to allow it to fit, it is provided in a size and shape that fits exactly into the second recess of the first fitting part.

  According to the above configuration, the heat insulating container of the present invention allows the first fitting portion around the opening of the upper container to be fitted to the second fitting portion around the opening of the lower container, or the opening of the upper container. The heat insulating chamber can be formed by fitting the second fitting portion around the portion to the first fitting portion around the opening of the lower container. When accommodating articles that require strict temperature control over a relatively long time, such as pharmaceuticals, in the heat-insulating chamber inside the heat-insulating container, through a gap between the upper container and the lower container, It is necessary to minimize the transfer of heat between the heat insulating chamber inside the heat insulating container and the outside of the heat insulating container.

  Therefore, the heat-insulating container of the present invention includes the above-described first fitting portion and second fitting portion as a fitting structure for fitting the opening of the upper container and the opening of the lower container. When the first fitting portion and the second fitting portion are fitted to each other to fit the opening of the upper container and the opening of the lower container, the first fitting portion is provided on the outer side of the heat insulating container. The first projection and the first recess of the second fitting portion are fitted. Further, the second concave portion of the first fitting portion and the second convex portion of the second fitting portion are fitted on the inner side of the heat insulating container.

  Thus, in the heat insulating container of the present invention, the fitting of the concave portion and the convex portion provided in the container height direction around the opening that is the joint portion between the upper container and the lower container is performed from the container outer side. Two or more layers are provided on the inner side of the container. Thereby, the movement path of the warmed air (hereinafter, may be simply referred to as heat) between the outside of the heat insulating container and the heat insulating chamber inside the container through the gap between the upper container and the lower container, It can be longer than before.

  Further, heat has a property that it is easy to move from the lower side to the upper side in the container height direction, and it is difficult to move the heat from the upper side to the lower side. Here, as described above, the heat insulating container of the present invention allows the first fitting portion and the second fitting portion to fit the concave portion and the convex portion formed in the container height direction into the container of the heat insulating container. It can be provided over two or more layers from the outer side to the inner side of the container. For this reason, in the heat transfer path between the upper container and the lower container, many portions from the upper side to the lower side in the container height direction are formed, and the transfer of heat can be prevented.

  Therefore, according to the heat insulating container of the present invention, the outside of the heat insulating container and the heat insulating container through the gap between the upper container and the lower container by the fitting structure having the first fitting portion and the second fitting portion. The transfer of heat between the heat insulating chamber and the inside of the device can be reduced as compared with the related art.

  In the heat insulating container of the present invention, the upper container and the lower container may have a first fitting portion and a second fitting portion, respectively. Also in this case, in the upper container and the lower container, the first fitting portion and the second fitting portion are provided so as to surround the entire periphery of the opening, respectively, so that one of the upper container and the lower container has the first fitting portion and the second fitting portion. The same effect as in the case where one fitting portion is provided and the second fitting portion is provided on the other can be obtained.

  In this case, the second fitting portion of the lower container is provided at a position facing the first fitting portion of the upper container, and the first fitting portion of the lower container is provided at a position facing the second fitting portion of the upper container. Preferably, a part is provided. Thereby, the first fitting portion of the upper container can be fitted to the second fitting portion of the lower container, and the second fitting portion of the upper container can be fitted to the first fitting portion of the lower container.

  Further, when the upper container and the lower container have the first fitting portion and the second fitting portion, respectively, the upper container and the lower container respectively have the first fitting portion and the second fitting portion around the opening. It is possible to have the same configuration in which the joining part is provided half by one in the circumferential direction of the opening. Accordingly, it is not necessary to distinguish between the upper container and the lower container, the compatibility between the upper container and the lower container is provided, and the production and handling of the insulated container can be facilitated.

  Further, the heat insulating container of the present invention has an intermediate having an upper opening provided to be fittable in the opening of the upper container, and a lower opening provided to be fittable in the opening of the lower container. A container can be further provided. The intermediate container has at least one of a first fitting portion and a second fitting portion around the upper opening and the lower opening.

  Accordingly, when the volume of the articles to be accommodated in the heat-insulating container is large, the opening of the upper container and the upper opening of the intermediate container are fitted together, and the opening of the lower container and the lower opening of the intermediate container are connected. When fitted, the upper container, the intermediate container, and the lower container can form a large-diameter insulated chamber. Further, the fitting of the upper container and the intermediate container and the fitting of the intermediate container and the lower container are performed by fitting the first fitting portion and the second fitting portion. Therefore, the transfer of heat between the upper container and the intermediate container or between the intermediate container and the lower container can be suppressed as compared with the related art.

  Preferably, the first fitting portion and the second fitting portion of the intermediate container are provided such that the lower opening and the upper opening of the plurality of intermediate containers can be fitted to each other. Thereby, for example, the upper opening of the first intermediate container is fitted to the opening of the upper container, the upper opening of the second intermediate container is fitted to the lower opening of the first intermediate container, The two intermediate containers can be arranged between the upper container and the lower container by fitting the opening of the lower container into the lower opening of the second intermediate container. Similarly, three or more intermediate containers can be arranged between the upper container and the lower container.

  Therefore, the volume of the heat insulating chamber can be increased according to the volume of the articles housed in the heat insulating container. Further, by the fitting of the first fitting portion and the second fitting portion, a gap between the upper container and the intermediate container, a gap between the intermediate containers, and a gap between the intermediate container and the lower container. The transfer of heat through the fins can be suppressed.

  The heat-insulating container of the present invention includes a first fitting portion and a second fitting portion fitted to each other, and the inside of the heat-insulating chamber is formed by fitting the first fitting portion and the second fitting portion. Wherein the first fitting portion is provided on a first convex portion protruding in a container height direction, and the first fitting portion is provided on an inner side of the container with respect to the first convex portion. A second concave portion which is depressed in a height direction, wherein the second fitting portion is provided with a first concave portion in which the first convex portion is fitted, and provided on an inner side of the container of the first concave portion; A second convex portion fitted into the second concave portion.

  The first convex portion of the first fitting portion is provided so as to extend along the circumferential direction of the outer peripheral surface of the heat insulating container. For example, the outer peripheral surface of the heat insulating container is located at the most outward position facing the external space. Can be formed flush with each other without any step. The first convex portion of the first fitting portion has a convex shape corresponding to the concave shape of the first concave portion of the second fitting portion, and a gap is formed as much as possible with the first concave portion of the second fitting portion. In order not to allow it to fit, it is provided with a size and shape that fits exactly into the first recess of the second fitting part.

  The second concave portion of the first fitting portion can be provided so as to extend along the extending direction of the first convex portion on the container inner side of the first convex portion. The second concave portion of the first fitting portion has a concave shape corresponding to the convex shape of the second convex portion of the second fitting portion, and a gap between the second concave portion of the second fitting portion and the second convex portion is minimized. The shape and dimensions are such that the second protrusion of the second fitting portion is fitted exactly so as not to cause the occurrence.

  The first concave portion of the second fitting portion is provided so as to be depressed in a direction opposite to a projecting direction of the first convex portion of the first fitting portion in the container height direction. It can be formed so as to be depressed to the side and extend along the circumferential direction of the outer peripheral surface of the heat insulating container. The first concave portion of the second fitting portion has a concave shape corresponding to the convex shape of the first convex portion of the first fitting portion, and a gap between the first concave portion of the first fitting portion and the first convex portion is made as small as possible. The shape and dimensions are such that the first protrusions of the first fitting portion are fitted exactly so as not to cause the occurrence.

  The second convex portion of the second fitting portion can be provided so as to extend along the extending direction of the first concave portion on the container inner side of the first concave portion. The second convex part of the second fitting part has a convex shape corresponding to the concave shape of the second concave part of the first fitting part, and a gap is formed as much as possible with the second concave part of the first fitting part. In order not to allow it to fit, it is provided in a size and shape that fits exactly into the second recess of the first fitting part.

  With the above configuration, the heat insulating container of the present invention can form the heat insulating chamber by fitting the first fitting portion to the second fitting portion. When accommodating an article that requires strict temperature control for a relatively long time, such as a medicine, in the interior of the heat insulating chamber, a gap between the first fitting portion and the second fitting portion is formed. It is necessary to prevent heat transfer between the heat insulation chamber inside the heat insulation container and the outside of the heat insulation container via the heat exchanger as much as possible.

  Therefore, the heat insulating container of the present invention includes the above-described first fitting portion and the second fitting portion as a fitting structure for forming the heat insulating chamber by fitting the upper container and the lower container. . When the first fitting portion and the second fitting portion are fitted to each other to fit the opening of the upper container and the opening of the lower container, the first fitting portion is provided on the outer side of the heat insulating container. Of the first fitting portion and the first recess portion of the second fitting portion. Further, the second concave portion of the first fitting portion and the second convex portion of the second fitting portion are fitted on the inner side of the heat insulating container.

  As described above, in the heat insulating container of the present invention, the fitting of the concave portion and the convex portion provided in the container height direction is provided over two or more times from the container outer side to the container inner side. Thereby, the heat transfer path between the outside of the heat insulating container and the heat insulating chamber inside the heat insulating container through the gap between the first fitting portion and the second fitting portion can be made longer than before. .

  In addition, heat has a property that it is easy to move from the lower side to the upper side in the container height direction, and is difficult to move from the upper side to the lower side. Here, as described above, the heat insulating container of the present invention allows the first fitting portion and the second fitting portion to fit the concave portion and the convex portion formed in the container height direction into the container of the heat insulating container. It can be provided over two or more layers from the outer side to the inner side of the container. For this reason, in the heat transfer path between the upper container and the lower container, many portions from the upper side to the lower side in the container height direction are formed, and the transfer of heat can be prevented.

  Therefore, according to the heat insulating container of the present invention, the heat insulation via the gap between the first fitting portion and the second fitting portion is achieved by the fitting structure having the first fitting portion and the second fitting portion. The transfer of heat between the outside of the container and the heat insulating chamber inside the heat insulating container can be reduced as compared with the related art.

  Moreover, in the said heat insulation container, the said 1st fitting part and the said 2nd fitting part can have the inclined surface which opposes in the container height direction. For example, the top surface of each convex portion and the bottom surface of each concave portion can be inclined surfaces. In this case, the inclined surface is preferably inclined from the upper side to the lower side in the container height direction from the outer side of the container toward the inner side of the container. Accordingly, when the heat insulating chamber of the heat insulating container is maintained at a lower temperature than the outside of the heat insulating container, the heat that moves from the container outer side to the container inner side along the inclined surface can be reduced.

  Further, in the heat insulating container, it is preferable that the first convex portion is larger than the second convex portion, and the first concave portion is larger than the second concave portion. More specifically, it is preferable that the height of the first protrusion in the container height direction and the thickness in the direction from the outside of the container toward the inside of the container are larger than the second protrusion. Similarly, it is preferable that the depth of the first recess in the container height direction and the width in the direction from the outside of the container toward the inside of the container are larger than the second recess. Thereby, not only can the heat transfer from the outside of the container to the inside of the container be prevented more effectively, but also the fitting between the first fitting portion and the second fitting portion is facilitated. Can be.

  In the heat insulating container, the first fitting portion may include a third convex portion provided on the container inner side of the second concave portion and protruding in a container height direction. Further, the second fitting portion may have a third concave portion provided on an inner side of the container with respect to the second convex portion and adapted to fit the third convex portion. Thereby, the fitting of the concave portion and the convex portion formed in the height direction of the container can be provided three times from the outer side of the container to the inner side of the container. The transfer of heat between the outside and the heat insulating chamber inside the heat insulating container can be further reduced. It is also possible to provide four or more fittings between the concave portion and the convex portion formed in the container height direction from the container outer side to the container inner side.

  It is preferable that the first convex portion is larger than the third convex portion, and the first concave portion is larger than the third concave portion. Thereby, not only can the heat transfer from the outside of the container to the inside of the container be prevented more effectively, but also the fitting between the first fitting portion and the second fitting portion is facilitated. Can be.

  According to the heat-insulating container made of synthetic resin of the present invention, the first fitting portion and the second fitting portion are fitted to each other to form a heat-insulating chamber inside the container. The transfer of heat can be suppressed more than before.

The exploded perspective view of the heat insulation container concerning one embodiment of the present invention. The perspective view which shows an example of the article accommodated in the heat insulation chamber of the heat insulation container shown in FIG. The perspective view of the heat insulation container which fitted the upper container and the lower container shown in FIG. FIG. 2 is a top view, left and right side views, and a front view of the lower container shown in FIG. 1. FIG. 5 is a cross-sectional view of the lower container taken along line VV shown in FIG. 4. FIG. 6 is an enlarged sectional view showing a fitted state of the first fitting portion and the second fitting portion shown in FIG. 5. The bottom view of the lower container shown in FIG. The perspective view of the heat insulation container which fitted the upper container, the intermediate container, and the lower container shown in FIG. The front view of the heat insulation container shown in FIG. FIG. 2 is a top view, left and right side views, and a front view of the intermediate container shown in FIG. 1. Sectional drawing which follows the XI-XI line of the intermediate container shown in FIG. The bottom view of the intermediate container shown in FIG. FIG. 2 is a perspective view showing a state where an intermediate container is fitted to the lower container shown in FIG. 1. FIG. 7 is an enlarged sectional view showing a modified example of the first fitting portion and the second fitting portion shown in FIG. 6. The expanded sectional view showing the modification of the fitting structure of the heat insulation container.

  Hereinafter, an embodiment of a heat insulating container of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view of a heat insulating container 100 according to one embodiment of the present invention. In the example shown in FIG. 1, the heat insulating container 100 of the present embodiment includes an upper container 10A, an intermediate container 20, and a lower container 10B. Although details will be described later, as shown in FIG. 3, the heat insulating container 100 of the present embodiment may include the upper container 10A and the lower container 10B, and may not include the intermediate container 20.

  The heat insulating container 100 of this embodiment is a container made of a synthetic resin, and the upper container 10A, the intermediate container 20, and the lower container 10B are made of, for example, a synthetic resin foam. As the synthetic resin foam, for example, a foam of a polystyrene resin or a polyester resin can be used.

  As the polystyrene resin, for example, polystyrene, styrene-modified polyolefin resin, high impact polystyrene, styrene-ethylene copolymer, styrene-maleic anhydride copolymer, styrene-acrylonitrile copolymer, and the like can be used. As the polyester-based resin, for example, polyethylene, polypropylene, polyolefin-based resin such as ethylene-vinyl acetate copolymer, polyethylene terephthalate, and the like can be used.

  FIG. 2 is a perspective view illustrating an example of an article stored in the heat insulating container 100 of the present embodiment. In the heat insulating container 100 of the present embodiment, for example, a plurality of thin rectangular cases C in which articles requiring temperature control are stored can be stacked in the thickness direction and stored in the heat insulating chamber. An example of the article housed in the case C and requiring temperature control is a drug-eluting stent.

  Drug-eluting stents are medical devices used for the treatment of vascular diseases such as coronary artery disease and cerebral aneurysm, and are used not only to mechanically support the blood vessels but also to prevent the blood vessels from re-occluding. Drugs are being applied. The drug-eluting stent requires strict temperature control during storage and transportation in order to prevent the applied drug from deteriorating. More specifically, it is required that the temperature of the drug-eluting stent contained in the heat-insulating chamber formed inside the heat-insulating container 100 be kept at 25 ° C. or lower for, for example, 72 hours.

  Further, in medical institutions, since a drug-eluting stent having a diameter corresponding to the diameter of a blood vessel of a patient is selected and used, for example, it is necessary to always provide about 14 types of stents having different diameters. Need to refill. Therefore, for example, when introducing a drug-eluting stent, all types of stents are ordered one by one at the time of introduction of the drug-eluting stent, or after the introduction of the drug-eluting stent, only the required number of stents are required in a necessary quantity. There is a demand for refilling.

  In order to respond to such a demand, for example, two, four, or fourteen cases C are respectively stacked in a small box B1, a middle box B2, and a large box B3, which are inner boxes made of cardboard in a stacked state. In the housed state, it is necessary to house in a heat insulating room formed inside the heat insulating container 100. In order to cope with such a change in the size of the articles stored in the heat insulating chamber, the heat insulating container 100 of the present embodiment forms a small heat insulating chamber by the upper container 10A and the lower container 10B shown in FIG. In addition to the above, the upper container 10A, the intermediate container 20, and the lower container 10B can form a large-sized heat insulating chamber.

  FIG. 3 is a perspective view of the heat insulating container 100 in which the opening 10a of the upper container 10A and the opening 10a of the lower container 10B shown in FIG. 1 are fitted. 4 are four views of the lower container 10B shown in FIG. 1, wherein (a) is a top view, (b) is a left side view, (c) is a right side view, and (d) is a front view. In the present embodiment, the upper container 10A and the lower container 10B are members having the same configuration and are interchangeable, but for convenience, they are arranged on the upper side in the container height direction H of the heat insulating container 100. The lower container is referred to as an upper container 10A and the lower container is referred to as a lower container 10B. In addition, these can also be collectively called the end container 10.

  Each of the upper container 10A and the lower container 10B is a rectangular box-shaped container having a storage space that is a part of a heat insulating chamber inside each of the openings 10a. The upper container 10A and the lower container 10B have, for example, a rectangular cylindrical side wall 11, have an end wall 12 at one end of the side wall 11 in the container height direction H, and have an opening 10a at the other end of the side wall 11. Have. The heat insulating container 100 is configured such that the opening 10a of the upper container 10A and the opening 10a of the lower container 10B are vertically opposed to each other and fitted to each other so that the side wall 11 and the end wall 12 of the upper container 10A and the lower container 10B By the side wall 11 and the end wall 12, a heat insulating chamber isolated from the outside of the container is formed inside the container.

  In the heat insulating container 100 of the present embodiment, the upper container 10A and the lower container 10B have at least one of the first fitting portion 1 and the second fitting portion 2 around each opening 10a. In the illustrated example, the upper container 10A and the lower container 10B have a first fitting portion 1 and a second fitting portion 2, respectively.

  As shown in FIG. 1, the first fitting portion 1 of the lower container 10B is provided at a position facing the second fitting portion 2 of the upper container 10A, and the second fitting portion 2 of the lower container 10B is It is provided at a position facing the first fitting portion 1 of the upper container 10A. That is, the second fitting portion 2 of the lower container 10B is provided at a position facing the first fitting portion 1 of the upper container 10A, and the lower fitting 10B is located at a position facing the second fitting portion 2 of the upper container 10A. A first fitting portion 1 is provided. In the illustrated example, the upper container 10A and the lower container 10B have the same shape in which the first fitting portion 1 and the second fitting portion 2 are respectively provided around the opening 10a in the circumferential direction of the opening 10a. It has a configuration.

  The arrangement of the first fitting portion 1 and the second fitting portion 2 with respect to the lower container 10B and the upper container 10A is not limited to the illustrated example. For example, the first fitting portion 1 surrounding the opening 10a is continuously provided over the entire periphery of the opening 10a of the upper container 10A, and the opening is provided over the entire periphery of the opening 10a of the lower container 10B. The second fitting portion 2 surrounding the portion 10a can be provided continuously. Further, for example, the second fitting portion 2 surrounding the opening 10a is provided continuously over the entire periphery of the opening 10a of the upper container 10A, and is provided over the entire periphery of the opening 10a of the lower container 10B. Thus, the first fitting portion 1 surrounding the opening 10a can be provided continuously.

  Further, a plurality of first fitting portions 1 and second fitting portions 2 are alternately provided around each opening 10a of the upper container 10A and the lower container 10B, and the first fitting portion 1 and the second fitting portion are provided. The periphery of the opening 10a may be entirely surrounded by the part 2. In this case, the positions of the first fitting portion 1 and the second fitting portion 2 are such that when the opening 10a of the upper container 10A and the opening 10a of the lower container 10B face each other, the first fitting of the upper container 10A is performed. The joint part 1 and the second fitting part 2 of the lower container 10B face each other, and the second fitting part 2 of the upper container 10A and the first fitting part 1 of the lower container 10B face each other.

  FIG. 5 is a cross-sectional view of the lower container 10B taken along line VV shown in FIG. In addition, in the heat insulating container 100 of this embodiment, since the upper container 10A and the lower container 10B have the same configuration, the configuration of the upper container 10A and the lower container 10B will be described simultaneously with reference to FIG.

  The first fitting portion 1 provided on the upper container 10A and the lower container 10B has a first convex portion 1a protruding in the container height direction H, and a container provided on the container inner side of the first convex portion 1a. And a second concave portion 1b depressed in the height direction H.

  Here, the container height direction H is the height direction of the heat insulating container 100, is the direction in which the upper container 10A and the lower container 10B are stacked, and is substantially parallel to the side walls 11 of the upper container 10A and the lower container 10B. The direction is substantially perpendicular to the wall 12. Further, the inside of the container means a position closer to the heat insulating chamber in a direction from the external space of the heat insulating container 100 to the heat insulating chamber inside the container, and the outside of the container means the position of the heat insulating container from the heat insulating chamber inside the container. A position closer to the outer space of the heat insulating container 100 in the direction toward the outer space of the heat insulating container 100 is meant.

  The first protrusion 1a of the first fitting portion 1 has an opening 10a on the opposite side to the end of the side wall 11 connected to the end wall 12 in the container height direction H of the upper container 10A or the lower container 10B. At the end of a side wall 11 surrounding the end wall 12 so as to protrude away from the end wall 12.

  As shown in FIG. 4A, the first protrusion 1a of the first fitting portion 1 extends in a frame shape along the circumferential direction of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. It is provided as follows. As shown in FIG. 5, the first convex portion 1 a of the first fitting portion 1 is, for example, at an outermost position of the side wall 11 facing the external space on the outer side of the container, that is, the outer periphery of the heat insulating container 100. Along the surface, it can be formed flush with no steps.

  FIG. 6 is an enlarged cross-sectional view showing a state where the first fitting portion 1 of the lower container 10B and the second fitting portion 2 of the upper container 10A are fitted. The first convex portion 1a of the first fitting portion 1 has a convex shape corresponding to the concave shape of the first concave portion 2a of the second fitting portion 2, and is in contact with the first concave portion 2a of the second fitting portion 2. The size and the shape of the second fitting portion 2 are such that they fit into the first concave portion 2a of the second fitting portion 2 so as to minimize a gap therebetween.

  The outer surface of the first fitting portion 1 of the lower container 10B is the outer surface of the side wall 11 of the upper container 10A in a state where the first fitting portion 1 of the lower container 10B is fitted to the second fitting portion 2 of the upper container 10A. And are flush with each other. Although not shown, the outer surface of the first fitting portion 1 of the upper container 10A is in a state where the first fitting portion 1 of the upper container 10A is fitted to the second fitting portion 2 of the lower container 10B. It is adjacent to the outer surface of the side wall 11 of the lower container 10B without any step.

  As shown in FIG. 4A, the second concave portion 1b of the first fitting portion 1 is larger than the first convex portion 1a at the end of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. It is provided inside the container. As shown in FIG. 5, the second concave portion 1b of the first fitting portion 1 is provided so as to be depressed toward the end wall 12 in the container height direction H.

  As shown in FIG. 4A, the second concave portion 1b of the first fitting portion 1 is formed in a groove shape extending along the circumferential direction of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. can do. As shown in FIG. 6, the second concave portion 1b of the first fitting portion 1 has a concave shape corresponding to the convex shape of the second convex portion 2b of the second fitting portion 2. The second protrusion 2b of the second fitting portion 2 is formed in such a shape and size that the second protrusion 2b is fitted to the second protrusion 2b so as to minimize the generation of a gap between the second protrusion 2b and the second protrusion 2b.

  In the heat insulating container 100 of the present embodiment, the first fitting portion 1 further has a third convex portion 1c provided on the container inner side of the second concave portion 1b and protruding in the height direction. As shown in FIG. 4A, the third convex portion 1c can be formed in a frame shape extending along the circumferential direction of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. As shown in FIG. 6, the third convex portion 1 c has a convex shape corresponding to the concave shape of the third concave portion 2 c of the second fitting portion 2, and is formed with the third concave portion 2 c of the second fitting portion 2. The shape and dimensions are such that they fit into the third recess 2c of the second fitting part 2 so as to minimize the formation of a gap between them.

  As shown in FIGS. 5 and 6, the second fitting portion 2 is provided at the end of the side wall 11 surrounding the opening 10 a of the upper container 10 </ b> A or the lower container 10 </ b> B, with the first convex portion 1 a of the first fitting portion 1. And a second convex portion 2b provided on the inner side of the container of the first concave portion 2a and fitted to the second concave portion 1b of the first fitting portion 1. .

  The first recess 2a of the second fitting portion 2 has an opening 10a on the side opposite to the end of the side wall 11 connected to the end wall 12 in the container height direction H of the upper container 10A or the lower container 10B. It is provided at the end of the surrounding side wall 11 and is depressed in the direction toward the end wall 12. The first concave portion 2a of the second fitting portion 2 is formed in a stepped shape that is depressed inward from the outer surface of the side wall 11 of the upper container 10A or the lower container 10B, that is, the outer peripheral surface of the heat insulating container 100.

  As shown in FIG. 4A, the first concave portion 2a of the second fitting portion 2 extends in the circumferential direction of the side wall 11 surrounding the opening 10a, that is, in the circumferential direction of the outer peripheral surface of the heat insulating container 100. Is formed. As shown in FIG. 6, the first concave portion 2 a of the second fitting portion 2 has a concave shape corresponding to the convex shape of the first convex portion 1 a of the first fitting portion 1. The first protrusion 1a of the first fitting portion 1 is provided with a shape and dimensions that allow the first protrusion 1a to fit tightly so as to minimize the generation of a gap between the first protrusion 1a and the first protrusion 1a.

  As shown in FIG. 4A, the second convex portion 2b of the second fitting portion 2 has a first concave portion 2a at the end of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. It is provided on the inner side. The second convex portion 2b of the second fitting portion 2 is provided in a frame shape extending along the circumferential direction of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B.

  As shown in FIG. 5, the second convex portion 2 b of the second fitting portion 2 is provided so as to protrude in a direction away from the end wall 12 in the container height direction H. As shown in FIG. 6, the second convex portion 2b of the second fitting portion 2 has a convex shape corresponding to the concave shape of the second concave portion 1b of the first fitting portion 1. The first fitting portion 1 is provided with a size and a shape that fits exactly into the second concave portion 1b so as to minimize a gap between the second concave portion 1b and the second concave portion 1b.

  In the heat insulating container 100 of the present embodiment, the second fitting portion 2 further has a third concave portion 2c provided on the container inner side of the second convex portion 2b to fit the third convex portion. As shown in FIG. 4A, the third concave portion 2c can be formed in a groove shape extending along the circumferential direction of the side wall 11 surrounding the opening 10a of the upper container 10A or the lower container 10B. The third concave portion 2c has a concave shape corresponding to the convex shape of the third convex portion 1c of the first fitting portion 1 as shown in FIG. The shape and dimensions are such that the third convex portion 1c of the first fitting portion 1 is fitted exactly so that a gap is not generated as much as possible.

  In the heat insulating container 100 of the present embodiment, the first protrusion 1a is larger than the second protrusion 2b, and the first recess 2a is larger than the second recess 1b. More specifically, the height of the first protrusion 1a in the container height direction H and the thickness in the direction from the outside of the container to the inside of the container are larger than the second protrusion 2b. Similarly, the depth of the first concave portion 2a in the container height direction H and the width in the direction from the outer side of the container to the inner side of the container are larger than the second concave portion 1b.

  Further, the second convex portion 2b is larger than the third convex portion 1c, and the second concave portion 1b is larger than the third concave portion 2c. More specifically, the height of the second convex portion 2b in the container height direction H and the thickness of the second convex portion 2b in the direction from the outer side of the container toward the inner side of the container are larger than the third convex portion 1c. Similarly, the depth of the second concave portion 1b in the container height direction H and the width of the second concave portion 1b in the direction from the outer side to the inner side of the container are larger than the third concave portion 2c. That is, the plurality of convex portions and concave portions that fit with each other gradually become smaller from the outside of the container toward the inside of the container.

  In addition, the magnitude relationship between the convex portions and the concave portions arranged from the container outer side to the container inner side is not limited to the illustrated example. For example, of the three or more sets of convex portions and concave portions arranged from the container outer side to the container inner side, the convex portion and the concave portion arranged most on the container outer side and the convex portion arranged most on the container inner side. The convex part and the concave part between the part and the concave part may be the largest. That is, in FIG. 6, the second convex portion 2b can be larger than the first convex portion 1a and the third convex portion 1c, and the second concave portion 1b can be larger than the first concave portion 2a and the third concave portion 2c.

  Also in this case, it is preferable that the convex portion and the concave portion disposed on the outermost side of the container are larger than the convex portion and the concave portion disposed on the innermost side of the container. That is, in FIG. 6, even when the second convex portion 2b is larger than the first convex portion 1a and the third convex portion 1c and the second concave portion 1b is larger than the first concave portion 2a and the third concave portion 2c. Preferably, the first protrusion 1a is larger than the third protrusion 1c, and the first recess 2a is larger than the third recess 2c.

  In the heat insulating container 100 of the present embodiment, the upper container 10A and the lower container 10B are located on the inner side of the container of the first fitting portion 1 and the second fitting portion 2 as shown in FIGS. The opening 10a has a flat contact surface 3 on the outer side of the container. The width of the contact surface 3 is larger than the widths of the first fitting portion 1 and the second fitting portion 2 in a direction from the container outer side perpendicular to the container height direction H toward the container inner side. . As shown in FIG. 6, the contact surface 3 of the upper container 10A and the contact surface 3 of the lower container 10B preferably contact each other when the upper container 10A and the lower container 10B are fitted to each other, or are in contact with each other. They are arranged facing each other so as to minimize the gap between the contact surfaces 3.

  As shown in FIGS. 1, 4 (a) and 5, a support step 4 is provided on the inner side of the contact surface 3 of the upper container 10A and the lower container 10B. The supporting step portion 4 is stepped from the inner surface of the side wall 11 facing the heat insulating chamber of the upper container 10A and the lower container 10B toward the outer side of the container in a stepped manner, and the upper container 10A and the lower container in the container height direction H. 10B is provided to be depressed from the contact surface 3 toward the end wall 12.

  As shown in FIG. 4A, the supporting step 4 is used to support a part of the end face in the case C stacking direction of the small box B1 in which the two cases C shown in FIG. Are provided in positions corresponding to the four corners of the small box B1 in a wedge shape having a plane shape of a right triangle. When the four supporting steps 4 support the four corners of the small box B1, each side of the rectangular small box B1 has a substantially rectangular lower container 10B and an upper container 10A in a top view shown in FIG. Are provided in a four-fold rotational symmetry with respect to the center O of the lower container 10B and the upper container 10A so as to be inclined by a predetermined angle with respect to the center lines C1 and C2.

  The upper container 10A and the lower container 10B have four supporting steps 4 'in addition to the four supporting steps 4 described above. These four supporting steps 4 'are provided symmetrically with respect to the above-described four supporting steps 4 at the center lines C1 and C2 of the upper container 10A and the lower container 10B shown in FIG. As shown in FIG. 4 (a), these four supporting steps 4 'are the same as the lower container 10B with respect to the opening 10a of the lower container 10B supporting the small box B1 by the above-mentioned four supporting steps 4. When the openings 10a of the upper container 10A having the above structure are fitted to face each other, the small box B1 supported by the lower container 10B has an upper side opposite to the lower end surface in the container height direction H. Supports the four corners of the end face.

  As shown in FIG. 1, FIG. 4 (a) and FIG. 5, a plurality of supporting projections 5a, 5b, 5c are provided on the inner side of the supporting steps 4, 4 ′ of the upper container 10A and the lower container 10B. Is provided. The support projections 5a, 5b, 5c are provided so as to protrude inward from the inner surface of the side wall 11 facing the heat-insulating chamber of the upper container 10A and the lower container 10B. It is provided so as to protrude from the end wall 12 of the lower container 10A and the lower container 10B toward the opening 10a.

  The supporting protrusions 5a, 5b, and 5c are larger than the small box B1 in which the two cases C shown in FIG. 2 are stored in a stacked state, and are the cases of the middle box B2 in which the four cases C are stored in a stacked state. It is provided to support a part of the end face in the C stacking direction. Therefore, as shown in FIGS. 1 and 5, the support projections 5 a, 5 b, 5 c are provided closer to the end wall 12 than the support steps 4, 4 ′ in the container height direction H. As shown in FIG. 4 (a), when the middle box B2 is supported by the supporting protrusions 5a, 5b, 5c, each side of the rectangular middle box B2 when viewed from above is the upper container 10A and the lower container. It is arranged along the inner surface of the side wall 11 of 10B, and becomes substantially parallel to the longitudinal center line C1 or the lateral center line C2 of the upper container 10A and the lower container 10B.

  The support protrusions 5a, 5b, and 5c include two pairs of first support protrusions 5a arranged along two opposing sides of a rectangular middle box in a top view shown in FIG. It has a pair of second support protrusions 5b arranged between the support protrusions 5a, and a pair of third support protrusions 5c arranged along two other opposite sides of the inner box. The first support protrusion 5a is formed in a rectangular shape in a top view so as to support both ends of two opposing sides of the rectangular middle box B2.

  The pair of second support protrusions 5b, 5b are arranged at positions facing each other when viewed from above as shown in FIG. 4A, and hold and hold a substantially rectangular cold storage material R from above in a short side direction when viewed from above. Thus, the cold storage material R is opposed to the dimension of the short side direction substantially equal to or slightly smaller than that. In the second support projection 5b, the width of the distal end protruding toward the region where the cold storage material R is arranged is larger than the width of the base end so that the cold storage material R can be stably supported, and is viewed from above. And is formed in a substantially T-shape.

  The pair of third support protrusions 5c, 5c are arranged at positions facing each other when viewed from above as shown in FIG. 4A, and hold and hold a generally rectangular cold storage material R from above along the long side when viewed from above. Thus, the cold storage material R is opposed to the dimension of the long side direction substantially equal to or slightly smaller than that. The third support projection 5c has a long and narrow rectangular planar shape extending along the inner surface of the side wall 11 of the upper container 10A and the lower container 10B when viewed from above.

  FIG. 7 is a bottom view of the lower container 10B shown in FIG. In addition, in the heat insulating container 100 of this embodiment, since the upper container 10A has the same configuration as the lower container 10B, FIG. 7 is used as a top view of the upper container 10A. In the upper container 10A and the lower container 10B of the present embodiment, a plurality of angular recesses 13 are provided at the corners between the end wall 12 and the side wall 11. As shown in FIGS. 1, 3 and 4 (b), (c) and (d), the angular recess 13 has a convex portion formed between the angular recesses 13 and a container height by the angular recess 13. The thin portion having a reduced thickness in the direction H functions as a holding portion that facilitates holding of the upper container 10A and the lower container 10B.

  At four corners of the side wall 11 of the upper container 10A and the lower container 10B, cylindrical concave portions 14 which are cut out in a cylindrical shape are formed. The cylindrical concave portion 14 can prevent the upper container 10A and the lower container 10B from being damaged by cutting out the corners of the side wall 11 that are relatively easily damaged.

  As shown in FIG. 4, the cylindrical recesses 14 at the two corners where the first fitting portion 1 is provided are provided with gripping portions 15 near the end wall 12, and the second fitting portion 2 is provided with The gripping portion 15 is provided at a position close to the opening 10a in the provided cylindrical recesses 14 at the two corners. The grip 15 protrudes from the container inner side to the container outer side, thereby facilitating the grip of the upper container 10A and the lower container 10B, and reduces the impact on the upper container 10A and the lower container 10B during transportation. Also functions as a buffer.

  On the outer surfaces of the end walls 12 of the upper container 10A and the lower container 10B, a step portion 16 protruding in the container height direction H is provided. The step 16 is provided inside the outer surface of the side wall 11 when viewed from the bottom of the lower container 10B or the top of the upper container 10A shown in FIG. When the upper container 10A or the lower container 10B is stacked one on top of the other with the opening 10a facing downward, the stepped portion 16 is used as the first container 10A or the lower container 10B. The upper container 10A or the lower container 10B is prevented from shifting in the lateral direction by engaging with the inside of the first convex portion 1a of the fitting portion 1.

  FIG. 8 is a perspective view of the heat insulating container 100 in which the upper container 10A, the intermediate container 20, and the lower container 10B shown in FIG. 1 are fitted. FIG. 9 is a front view of the heat insulating container 100 shown in FIG. The heat insulating container 100 of the present embodiment can include an intermediate container 20 disposed between the upper container 10A and the lower container 10B in addition to the above-described upper container 10A and lower container 10B. As shown in FIG. 1, the intermediate container 20 has an upper opening 20a provided so as to be fitted into the opening 10a of the upper container 10A, and a lower opening provided so as to be fitted into the opening 10a of the lower container 10B. 20b (see FIG. 12).

  10 are four views of the intermediate container 20 shown in FIG. 1, wherein (a) is a top view, (b) is a left side view, (c) is a right side view, and (d) is a front view. FIG. 11 is a cross-sectional view of the intermediate container 20 shown in FIG. 10 along the line XI-XI. FIG. 12 is a bottom view of the intermediate container 20 shown in FIG. The intermediate container 20 can have at least one of the first fitting portion 1 and the second fitting portion 2 around the upper opening 20a and the lower opening 20b. In the illustrated example, the upper opening 20a and the lower opening 20b of the intermediate container 20 have a first fitting portion 1 and a second fitting portion 2, respectively, corresponding to the upper container 10A and the lower container 10B. I have.

  More specifically, as shown in FIG. 10A, the upper opening 20a of the intermediate container 20 faces the opening 10a of the upper container 10A having the same configuration as the lower container 10B shown in FIG. 4A. When it is made to have, the 2nd fitting part 2 which has the same structure as the 2nd fitting part 2 of the upper container 10A and the lower container 10B is provided in the position facing the 1st fitting part 1 of 10 A of upper containers. ing. When the upper opening 20a of the intermediate container 20 is opposed to the opening 10a of the upper container 10A, the upper opening 10a of the upper container 10A and the lower container 10B is located at a position facing the second fitting portion 2 of the upper container 10A. It has a first fitting portion 1 having the same configuration as the first fitting portion 1.

  Also, as shown in FIG. 12, when the lower opening 20b of the intermediate container 20 is opposed to the opening 10a of the lower container 10B shown in FIG. , A second fitting portion 2 having the same configuration as the second fitting portion 2 of the upper container 10A and the lower container 10B is provided. When the lower opening 20b of the intermediate container 20 is opposed to the opening 10a of the lower container 10B, the lower opening 20b of the upper container 10A and the lower container 10B is located at a position facing the second fitting portion 2 of the lower container 10B. It has a first fitting portion 1 having the same configuration as the first fitting portion 1.

  In addition, the arrangement of the first fitting portion 1 and the second fitting portion 2 with respect to the upper opening 20a and the lower opening 20b of the intermediate container 20 is based on the first fitting portion 1 and the second fitting portion 2 of the upper container 10A and the lower container 10B. Similarly to the arrangement of the fitting portions 2, the present invention is not limited to the illustrated example. For example, the first fitting portion 1 surrounding the upper opening 20a is continuously provided over the entire periphery of the upper opening 20a of the intermediate container 20, and the lower opening is provided over the entire periphery of the lower opening 20b. The second fitting portion 2 surrounding the portion 20b can be provided continuously. Also, for example, the second fitting portion 2 surrounding the upper opening 20a is continuously provided over the entire periphery of the upper opening 20a of the intermediate container 20, and is provided over the entire periphery of the lower opening 20b. The first fitting portion 1 surrounding the lower opening 20b can be provided continuously.

  Further, a plurality of first fitting portions 1 and second fitting portions 2 are alternately provided around the upper opening 20a and the lower opening 20b of the intermediate container 20, and the first fitting portion 1 and the second fitting portion 2 are provided. The periphery of the upper opening 20a and the lower opening 20b may be surrounded by the fitting portion 2 over the entire circumference. In this case, the positions of the first fitting portion 1 and the second fitting portion 2 are such that the opening portion 10a of the upper container 10A and the upper opening portion 20a of the intermediate container 20 face each other, and the lower opening portion 20b of the intermediate container 20 and the lower portion. When the opening 10a of the container 10B is opposed, the first fitting portion 1 and the second fitting portion 2 of each container are arranged at positions facing each other.

  Further, the heat insulating container 100 of the present embodiment can include a plurality of intermediate containers 20. In the illustrated example, the first fitting portion 1 and the second fitting portion 2 of the intermediate container 20 are arranged such that when the two intermediate containers 20 are arranged up and down, the lower opening 20b of the intermediate container 20 arranged above And the upper opening 20a of the intermediate container 20 arranged below are provided so that they can be fitted to each other. More specifically, as shown in FIG. 11, the first fitting portion 1 and the second fitting portion 2 of the upper opening 20a and the lower opening 20b of the intermediate container 20 are point-symmetric with respect to the center point O '. It is provided in.

  As shown in FIGS. 10A, 11 and 12, the intermediate container 20 has a rectangular annular tension projecting from the inner surface of the side wall 21 to the container inward at the end of the side wall 21 on the side of the lower opening 20 b. An outlet 22 is provided. The lower opening 20 b of the intermediate container 20 is opened in a rectangular shape close to a square inside the overhang 22. The vertical and horizontal dimensions of the opening 22a of the overhang portion 22 are slightly larger than the vertical and horizontal dimensions of the large box B3 in which the 14 cases C shown in FIG. 2 are stacked and accommodated in the height direction.

  As shown in FIG. 1 and FIG. 10A, the intermediate container 20 includes four housing recesses 23 which are depressed from the container inside to the container outside on the inner surface of the side wall 21 facing the heat insulating chamber. . The storage recess 23 is formed in a size corresponding to the size of the cold storage material R so that the cold storage material R can be housed, arranged and held on the overhanging portion 22.

  FIG. 13 is a perspective view showing a state where the intermediate container 20 is fitted to the lower container 10B shown in FIG. The large box B3 accommodating the fourteen cases C shown in FIG. 2 is, for example, in a state where the lower container 10B and the intermediate container 20 are fitted to each other, from the upper opening 20a of the intermediate container 20 to the inside of the intermediate container 20. And is inserted from above into a lower opening 20 b formed inside the overhang 22. As shown in FIG. 4A, the lower surface of the large box B3 that has passed through the lower opening 20b is supported by the supporting protrusions 5a, 5b, and 5c of the lower container 10B, similarly to the middle box B2.

  In this state, the edge of the projecting portion 22 on the inner side of the container, that is, the opening edge of the opening 22a is opposed to the side surface of the large box B3 accommodating the fourteen cases shown in FIG. I do. In addition, before fitting the intermediate container 20 to the lower container 10B, the lower surface of the large box B3 may be supported by the supporting protrusions 5a, 5b, and 5c of the lower container 10B.

  In this case, the intermediate container 20 is covered from above the large box B3, and the large box B3 is inserted into the inside of the intermediate container 20 from the lower opening 20b, and the lower opening 20b of the intermediate container 20 is connected to the opening 10a of the lower container 10B. , The large box B3 can be arranged inside the intermediate container 20. After that, by storing the cold storage material R in the storage recess 23, the cold storage material R can be arranged and held around the large box B3.

  At the four corners of the side wall of the intermediate container 20, cylindrical recesses 24 similar to the cylindrical recesses 14 of the upper container 10A and the lower container 10B are formed. As shown in FIGS. 10 and 13, the cylindrical concave portion 24 of the intermediate container 20 is provided with a grip portion 25 at a position near the upper opening 20a, and is formed flush with the cylindrical concave portion 14 of the lower container 10B without any step. I have.

  Hereinafter, the operation of the heat insulating container 100 of the present embodiment will be described.

  As described above, the heat insulating container 100 of the present embodiment includes the upper container 10A and the lower container 10B, and the opening 10a of the upper container 10A and the opening 10a of the lower container 10B are fitted to each other to insulate the inside of the container. It is a heat insulating container 100 made of synthetic resin in which a chamber is formed. The upper container 10A and the lower container 10B have at least one of the first fitting portion 1 and the second fitting portion 2 around each opening 10a. The first fitting portion 1 has a first convex portion 1a protruding in the container height direction H, and a second convex portion provided on the container inner side of the first convex portion 1a and depressed in the container height direction H. And a recess 1b. The second fitting portion 2 includes a first concave portion 2a into which the first convex portion 1a is fitted, and a second convex portion provided on the container inner side of the first concave portion 2a and fitted into the second concave portion 1b. 2b.

  In other words, the heat insulating container 100 of the present embodiment includes the first fitting portion 1 and the second fitting portion 2 fitted to each other, and the first fitting portion 1 and the second fitting portion 2 This is a synthetic resin heat-insulating container 100 capable of forming an heat-insulating chamber inside by fitting. The first fitting portion 1 includes a first convex portion 1a protruding in the container height direction H and a second concave portion 1b provided on the container inner side of the first convex portion 1a and depressed in the height direction. Have. The second fitting portion 2 includes a first concave portion 2a into which the first convex portion 1a is fitted, and a second convex portion provided inside the container with respect to the first concave portion 2a and fitted into the second concave portion 1b. 2b.

  With such a configuration, as shown in FIGS. 1 and 3, the heat-insulating container 100 of the present embodiment connects the first fitting portion 1 around the opening 10 a of the upper container 10 </ b> A to the opening 10 a of the lower container 10 </ b> B. While being fitted to the surrounding second fitting portion 2, the second fitting portion 2 around the opening 10a of the upper container 10A is fitted to the first fitting portion 1 around the opening 10a of the lower container 10B. Can be done. Thereby, the heat insulation chamber which can accommodate the small box B1 or the middle box B2 shown in FIG. 2 can be formed inside the heat insulation container 100.

  In the heat insulating container 100 of the present embodiment, a drug-eluting stent requiring strict temperature control in a heat insulating chamber for a relatively long time is accommodated in the case C and the small box B1 or the middle box B2 shown in FIG. It is housed in the state where it was. Therefore, the gap between the heat insulating chamber inside the heat insulating container 100 and the outside of the heat insulating container 100 is provided through the gap between the upper container 10A and the lower container 10B, that is, the gap between the first fitting portion 1 and the second fitting portion 2. It is necessary to minimize the transfer of heat between them.

  Therefore, the heat insulating container 100 of the present embodiment has the above-described first fitting portion 1 and second fitting portion as a fitting structure for fitting the upper container 10A and the lower container 10B to form a heat insulating chamber. 2 is provided. When the first fitting portion 1 and the second fitting portion 2 are fitted to each other to fit the opening 10a of the upper container 10A and the opening 10a of the lower container 10B, as shown in FIG. On the outer side of the container 100, the first convex portion 1a of the first fitting portion 1 and the first concave portion 2a of the second fitting portion 2 are fitted. Further, the second concave portion 1b of the first fitting portion 1 and the second convex portion 2b of the second fitting portion 2 are fitted on the inner side of the heat insulating container 100.

  That is, as shown in FIG. 6, the heat insulating container 100 of the present embodiment has the first convex portion 1 a and the second concave portion 1 b of the first fitting portion 1 and the first concave portion 2 a and the second concave portion 1 b of the second fitting portion 2. With the two convex portions 2b, the fitting of the concave portion and the convex portion formed in the container height direction H is provided twice from the outer side of the heat insulating container 100 to the inner side of the container. Thereby, the outside of the heat insulating container 100 and the inside of the heat insulating container 100 via the gap between the upper container 10A and the lower container 10B, that is, the gap between the first fitting portion 1 and the second fitting portion 2. The heat transfer path with the heat insulation chamber can be made longer than before.

  In addition, since the heat moving between the upper container 10A and the lower container 10B moves together with the air, the heat easily moves from the lower side to the upper side in the container height direction H, and conversely, from the upper side to the lower side. Has the property of being difficult to move. Here, as described above, the heat insulating container 100 of the present embodiment includes the first convex portion 1a and the second concave portion 1b of the first fitting portion 1 and the first concave portion 2a and the second concave portion 2b of the second fitting portion 2. With the convex portion 2b, the fitting of the concave portion and the convex portion formed in the container height direction H is provided twice from the outside of the heat insulating container 100 to the inside of the container. For this reason, in the heat transfer path between the upper container 10A and the lower container 10B, many portions from the upper side to the lower side in the container height direction H are formed, so that the transfer of heat can be prevented.

  Therefore, according to the heat insulating container 100 of the present embodiment, the gap between the upper container 10A and the lower container 10B, that is, the first container, is formed by the fitting structure having the first fitting portion 1 and the second fitting portion 2. The transfer of heat between the outside of the heat insulating container 100 and the heat insulating chamber inside the heat insulating container 100 through the gap between the fitting portion 1 and the second fitting portion 2 can be reduced as compared with the related art.

  Further, in the heat insulating container 100 of the present embodiment, as described above, the upper container 10A and the lower container 10B have the first fitting portion 1 and the second fitting portion 2, respectively. However, in the upper container 10A and the lower container 10B, one fitting portion and the second fitting portion 2 are provided so as to surround the entire periphery of the opening 10a. Therefore, of the upper container 10A and the lower container 10B, the first fitting portion 1 is continuously provided on the entire circumference of one opening 10a, and the second fitting portion is continuously provided on the entire circumference of the other opening 10a. 2, a high heat insulating effect can be obtained.

  In the heat insulating container 100 of the present embodiment, the second fitting portion 2 of the lower container 10B is provided at a position facing the first fitting portion 1 of the upper container 10A, and the second fitting portion of the upper container 10A is provided. 2, the first fitting portion 1 of the lower container 10B is provided. Thereby, the first fitting portion 1 of the upper container 10A is fitted to the second fitting portion 2 of the lower container 10B, and the second fitting portion 2 of the upper container 10A is fitted to the first fitting portion 1 of the lower container 10B. The upper container 10A and the lower container 10B can be fitted without any trouble.

  In the heat insulating container 100 of the present embodiment, the upper container 10A and the lower container 10B each have the first fitting portion 1 and the second fitting portion 2 around the opening 10a in the circumferential direction of the opening 10a. And have the same configuration. Thereby, it is not necessary to distinguish between the upper container 10A and the lower container 10B, and the upper container 10A and the lower container 10B can be made compatible, and the production and handling of the heat insulating container 100 can be facilitated.

  Further, in the heat insulating container 100 of the present embodiment, the first projection 1a is larger than the second projection 2b, and the first recess 2a is larger than the second recess 1b. Thereby, not only can the heat transfer from the container outer side to the container inner side be prevented more effectively, but also the first fitting portion 1 and the second fitting portion 2 can be easily fitted. can do.

  Further, in the heat insulating container 100 of the present embodiment, as shown in FIG. 6, the first fitting portion 1 is provided on the inner side of the container of the second concave portion 1b and protrudes in the height direction. have. The second fitting portion 2 has a third concave portion 2c provided on the inner side of the container of the second convex portion 2b to fit the third convex portion. Thereby, the fitting of the concave portion and the convex portion formed in the container height direction H can be provided three times from the container outer side to the container inner side. Therefore, as compared with the case where the fitting of the concave portion and the convex portion is provided twice from the outside of the container to the inside of the container as described above, the outside of the heat insulating container 100 and the heat insulating chamber inside the heat insulating container 100 are provided. The transfer of heat between them can be further suppressed. The fitting of the concave and convex portions formed in the container height direction H can be provided four times or more from the container outer side to the container inner side.

  Further, the second convex portion 2b is larger than the third convex portion 1c, and the second concave portion 1b is larger than the third concave portion 2c. That is, the plurality of convex portions and concave portions that fit with each other gradually become smaller from the outside of the container toward the inside of the container. Thereby, not only can the heat transfer from the outside of the container to the inside of the container be prevented more effectively, but also the fitting between the first fitting portion 1 and the second fitting portion 2 can be easily performed. can do.

  Although not shown, among the three or more sets of protrusions and recesses arranged from the outside of the container to the inside of the container, the protrusion and the recess arranged most outside the container and the most inside of the container The protrusion and the recess between the protrusion and the recess arranged on the side can be maximized. That is, in FIG. 6, the second convex portion 2b can be larger than the first convex portion 1a and the third convex portion 1c, and the second concave portion 1b can be larger than the first concave portion 2a and the third concave portion 2c. Thereby, the heat insulation of the heat insulation room of the heat insulation container 100 may be able to be improved more.

  Also in this case, it is preferable that the convex portion and the concave portion disposed on the outermost side of the container are larger than the convex portion and the concave portion disposed on the innermost side of the container. That is, in FIG. 6, even when the second convex portion 2b is larger than the first convex portion 1a and the third convex portion 1c and the second concave portion 1b is larger than the first concave portion 2a and the third concave portion 2c. The first convex portion 1a is larger than the third convex portion 1c, and the first concave portion 2a is larger than the third concave portion 2c. Thereby, the heat insulation of the heat insulation room of the heat insulation container 100 may be able to be further improved.

  Further, the heat insulating container 100 of the present embodiment has an upper opening 20a provided so as to be fitted to the opening 10a of the upper container 10A and a lower opening provided so as to be fitted to the opening 10a of the lower container 10B. 20b. The intermediate container 20 has at least one of the first fitting portion 1 and the second fitting portion 2 around the upper opening 20a and the lower opening 20b.

  Further, in the heat insulating container 100 of the present embodiment, the first convex portion 1a and the first concave portion 2a are defined as the convex portion and the concave portion which are arranged most outside the container, and the convex portion and the concave portion which are arranged most inside the container. Are the third convex portion 1c and the third concave portion 2c. When three or more sets of convex portions and concave portions are arranged from the container outer side to the container inner side, the convex portion and the concave portion arranged at the outermost side of the container are arranged at the innermost side of the container. It is preferable to make them larger than the convex portions and concave portions.

  As a result, the opening 10a of the upper container 10A and the upper opening 20a of the intermediate container 20 are fitted together, and the opening 10a of the lower container 10B and the lower opening 20b of the intermediate container 20 are fitted together. , The intermediate container 20 and the lower container 10B form a large-sized heat insulating chamber, and the large box B3 can be accommodated in the heat insulating chamber of the heat insulating container 100. The fitting between the upper container 10A and the intermediate container 20 and the fitting between the intermediate container 20 and the lower container 10B are performed by fitting the first fitting portion 1 and the second fitting portion 2 together. Therefore, the transfer of heat between the upper container 10A and the intermediate container 20 or between the intermediate container 20 and the lower container 10B can be suppressed as compared with the related art.

  As described above, the heat that moves together with the air has a property that it easily moves from the lower side to the upper side in the container height direction H, and conversely does not easily move from the upper side to the lower side. Therefore, the intermediate container 20 and the lower container 10B formed at a position relatively lower than the heat insulating container 100 than the gap between the upper container 10A and the intermediate container 20 formed at a position relatively higher than the heat insulating container 100. Heat tends to more easily enter the interior of the heat insulating chamber from the gap between the heat insulating chamber and the heat insulating chamber. Therefore, the fitting structure of the first fitting part 1 and the second fitting part 2 in the heat insulating container 100 of the present embodiment is between the intermediate container 20 and the lower container 10B at a relatively low position of the heat insulating container 100. By providing the heat insulating container, a remarkable heat insulating effect can be exhibited as compared with the conventional heat insulating container 100. For example, the fitting structure of the first fitting part 1 and the second fitting part 2 in the heat insulating container 100 of the present embodiment has a height of half or less of the entire height in the height direction H of the heat insulating container 100. When provided, a more remarkable heat insulating effect can be exhibited.

  Further, in the heat insulating container 100 of the present embodiment, the first fitting portion 1 and the second fitting portion 2 of the intermediate container 20 are fitted with the lower opening 20b and the upper opening 20a of the plurality of intermediate containers 20. It is provided to be possible. Thereby, for example, the upper opening 20a of the first intermediate container 20 is fitted into the opening 10a of the upper container 10A, and the upper opening of the second intermediate container 20 is fitted into the lower opening 20b of the first intermediate container 20. The two intermediate containers 20 are arranged between the upper container 10A and the lower container 10B by fitting the portion 20a and fitting the opening 10a of the lower container 10B to the lower opening 20b of the second intermediate container 20. can do. Thereby, the capacity of the heat insulating chamber of the heat insulating container 100 can be further expanded. Similarly, by arranging three or more intermediate containers 20 between the upper container 10A and the lower container 10B, the volume of the heat insulating chamber of the heat insulating container 100 can be further increased.

  Therefore, according to the heat insulating container 100 of the present embodiment, the volume of the heat insulating chamber can be increased according to the volume of the articles housed in the heat insulating chamber. Further, by the fitting between the first fitting portion 1 and the second fitting portion 2, a gap between the upper container 10A and the intermediate container 20, a gap between the intermediate containers 20, and a gap between the intermediate container 20 and the lower portion. The transfer of heat through the gap between the container 10B and the container 10B can be suppressed.

  Further, in the heat insulating container 100 of the present embodiment, the upper container 10A and the lower container 10B are, as shown in FIGS. 4A and 5, inwardly of the first fitting portion 1 and the second fitting portion 2. It has a flat contact surface 3 on the outside of the container at the side of the opening 10a. Accordingly, the heat transfer path from the outer peripheral surface of the heat insulating container 100 to the heat insulating chamber can be made longer, and the heat insulating property of the heat insulating container 100 can be further improved.

  FIG. 14 is an enlarged sectional view showing a modification of the first fitting portion 1 and the second fitting portion 2 shown in FIG. In the heat insulating container 100 of the present embodiment, the first fitting portion 1 'and the second fitting portion 2' may have inclined surfaces S facing each other in the height direction. For example, the top surfaces of the first convex portion 1a ', the second convex portion 2b', and the third convex portion 1c 'and the bottom surfaces of the first concave portion 2a', the second concave portion 1b ', and the third concave portion 2c' are inclined. It can be a surface S. In this case, the inclined surface S is preferably inclined from the upper side to the lower side in the container height direction H from the outside of the container toward the inside of the container. Accordingly, when the heat insulating chamber of the heat insulating container 100 is maintained at a lower temperature than the outside of the heat insulating container 100, heat moving from the container outer side to the container inner side along the inclined surface S can be reduced.

  FIG. 15 is a cross-sectional view showing a modification of the fitting structure of the heat insulating container 100. In the modification shown in FIG. 15, the lid 201 of the heat insulating container 200 and the upper end of the side wall of the container main body 202 are arranged from the upper side to the lower side in the container height direction H from the container outer side to the container inner side. An inclined surface S is provided. The heat moving with the air is unlikely to move from the upper side to the lower side in the container height direction H. Therefore, by providing an inclined surface S inclined from the upper side to the lower side in the container height direction H from the container outer side toward the container inner side, it is possible to prevent the container from moving from the container outer side to the container inner side. As a result, the heat insulating property of the heat insulating container 200 can be improved.

  As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention. For example, the shapes of the convex portions and concave portions of the first fitting portion and the second fitting portion may have a curved surface shape with rounded corners, or may be formed in a continuous waveform or saw blade shape. .

1 first fitting portion, 1a first convex portion, 1b second concave portion, 1c third convex portion,
2 second fitting portion, 2a first concave portion, 2b second convex portion, 2c third concave portion,
10A upper container, 10B lower container, 10a opening,
20 intermediate container, 20a upper opening, 20b lower opening,
100 Insulated container, H container height direction, S slope

Claims (10)

An insulating container made of a synthetic resin, comprising an upper container and a lower container, wherein an opening of the upper container and an opening of the lower container are fitted to form an insulating chamber inside the container,
The upper container and the lower container have at least one of a first fitting portion and a second fitting portion around each of the openings,
The first fitting portion has a first convex portion protruding in the container height direction, and a second concave portion provided inward of the container with respect to the first convex portion and depressed in the container height direction,
The second fitting portion has a first concave portion for fitting the first convex portion, and a second convex portion provided on the container inner side of the first concave portion and fitted to the second concave portion. ,
The first fitting portion and the second fitting portion have inclined surfaces facing each other in a container height direction,
The insulated container, wherein the inclined surface is inclined from an upper side of the container to a lower side of the container from an outer side of the container toward an inner side of the container.   The heat insulating container according to claim 1, wherein the upper container and the lower container have the first fitting portion and the second fitting portion, respectively.   The second fitting portion of the lower container is provided at a position facing the first fitting portion of the upper container, and the second fitting portion of the lower container is provided at a position facing the second fitting portion of the upper container. The heat insulating container according to claim 2, wherein one fitting portion is provided.   The said upper container and the said lower container have the same structure by which the said 1st fitting part and the said 2nd fitting part were each provided in the circumference of the said opening part by half circumference, respectively. An insulated container as described. An intermediate container having an upper opening provided to be fitted to the opening of the upper container and a lower opening provided to be fitted to the opening of the lower container, further comprising:
The said intermediate container has at least one of the said 1st fitting part and the said 2nd fitting part around the said upper opening part and the said lower opening part, The Claim 1 characterized by the above-mentioned. An insulated container according to claim 1.   The said 1st fitting part and the said 2nd fitting part are provided so that the said lower opening part and the said upper opening part of several said intermediate containers can mutually fit. Item 6. An insulated container according to item 5. Synthetic resin made up of a first fitting portion and a second fitting portion fitted to each other, and capable of forming a heat insulating chamber inside by fitting the first fitting portion and the second fitting portion together. Insulated container of
The first fitting portion has a first convex portion protruding in the container height direction, and a second concave portion provided on the container inner side of the first convex portion and depressed in the container height direction,
The second fitting portion has a first concave portion that fits the first convex portion, and a second convex portion that is provided on the container inner side of the first concave portion and fits in the second concave portion. And
The first fitting portion and the second fitting portion have inclined surfaces facing each other in a container height direction,
The insulated container, wherein the inclined surface is inclined from an upper side of the container to a lower side of the container from an outer side of the container toward an inner side of the container. The first convex portion is larger than the second convex portion,
The heat insulation container according to any one of claims 1 to 7, wherein the first recess is larger than the second recess. The first fitting portion has a third convex portion provided on the container inner side of the second concave portion and protruding in a container height direction,
The said 2nd fitting part has a 3rd recessed part provided in the container inner side of a said 2nd convex part, and fitting the said 3rd convex part, The any one of Claim 1 to 8 characterized by the above-mentioned. An insulated container according to claim 1. The first convex portion is larger than the third convex portion,
The heat insulation container according to claim 9, wherein the first recess is larger than the third recess.

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