JP2019038560A - Thermally insulated container - Google Patents

Abstract

To simply structure a thermally insulated container of a multiple wall structure having heat insulation and cold insulation properties.SOLUTION: A thermally insulated container is structured that has a bottomed cylindrical inner container 11 with an upper end opened, a bottomed cylindrical outer container 12 with an upper end opened and storing the inner container 11, and a connection member 13 forming a sealed space of a predetermined size between an outer peripheral surface of the inner container 11 and an inner peripheral surface of the outer container 12, in a state of storing the inner container 11 in the outer container 12, and installed between the upper end of the inner container 11 and the upper end of the outer container 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat insulation container having a multi-wall structure.

  A heat insulating container, for example, used as a mug cup, which has a multi-wall structure in which a sealed space of a predetermined size is formed between an inner container and an outer container and has improved heat insulation and cold insulation of contents, has been put into practical use. As a manufacturing method of this heat insulation container, for example, a method described in Patent Document 1 has been proposed. In this method, the opening end of the exterior molded body is reduced in diameter while keeping a gap between the exterior molded body (corresponding to the outer container) and the interior molded body (corresponding to the inner container) constant. And the opening edge part of an exterior molded object is closely_contact | adhered (press-contacted) to the opening edge part of an interior molded object, and the junction part which the interior molded object and the exterior molded object joined is formed. Air can be left in the gap between the two molded bodies, or a vacuum can be applied (see paragraphs 0019 to 0020 of FIG. 3 and FIG. 3).

  As shown in Patent Document 1, the inner container and the outer container can be integrated by close contact (pressure contact), but may be integrated by welding. Moreover, when using a resin material as a raw material of a container, it can also integrate by welding.

JP 2008-221317 A

  As shown in Patent Document 1, in the configuration in which the inner container and the outer container are integrated by a method such as close contact, welding, and welding, a large-scale device and an engineer skilled in welding are required. There was a problem of incurring high prices and making mass production difficult. In addition, when welding is performed, it is preferable that the inner container and the outer container are made of the same metal, so that there is a problem that choices of materials are limited.

  In addition, in a heat insulating container having a multi-wall structure, when the inside is a vacuum structure, direct heating is possible, but when air is present inside, it cannot be directly heated because it causes air expansion. . However, there are cases where the user cannot know whether or not the inside of the heat insulating container has a vacuum structure, and there is a problem that hinders handling during heating.

  Therefore, an object of the present invention is to simply construct a heat insulating container having a multi-wall structure having heat insulation and cold insulation properties.

  In order to solve the above-described problems, in the present invention, a bottomed cylindrical inner container having an open upper end, a bottomed cylindrical outer container having an upper end opened to accommodate the inner container, and the inner container In the state where the outer container is accommodated in the outer container, and forming an enclosed space of a predetermined size between the outer peripheral surface of the inner container and the inner peripheral surface of the outer container. And a connection member provided between the upper end of the container.

  Thus, by setting it as the structure which connects an inner side container and an outer side container with a connection member, a troublesome process, such as welding, becomes unnecessary, and the heat insulation container of the multi-wall structure which has heat insulation coolability can be manufactured cheaply. . Moreover, since only this inner side container can be heated by removing an inner side container from an outer side container, it is very convenient. Moreover, the inner container and the outer container can be used as independent containers, respectively. When not used as a multi-wall insulated container, for example, one of the two persons uses the inner container and the other uses the outer container. When using alone, for example, it is possible to increase variations in usage such as using food in the inner container and using drinks in the outer container.

  In the above configuration, a tapered surface whose outer diameter is reduced toward the bottom of the inner container is formed on the outer peripheral surface of the inner container, and the shaft of the connecting member is formed on the inner peripheral surface of the connecting member. It is preferable that a tapered surface is formed along the tapered surface formed in the inner container, the inner diameter of which decreases in the direction.

  In this way, by forming tapered surfaces on both the inner container and the connecting member, the inner container is smoothly guided by the connecting member when the inner container is inserted into the connecting member fitted to the upper end of the outer container. Thus, a concentric state between the outer container and the inner container is ensured. For this reason, a gap having a uniform size is formed in the circumferential direction between the inner peripheral surface of the outer container and the outer peripheral surface of the inner container, thereby ensuring high heat insulation and coolness. In addition, since the tapered surface formed on the inner container and the tapered surface formed on the connecting member are in surface contact with each other, further insertion of the inner container is prevented. For this reason, a gap of a predetermined size is formed between the bottom surface of the inner container and the bottom surface of the outer container, and it is possible to reliably prevent a decrease in heat insulation and cold retention due to contact between the bottom surfaces of both containers. it can.

  Moreover, in the structure which formed the taper surface in the said inner side container, it is set as the structure by which the several protrusion part which stands up in radial direction is formed in the upper end part internal diameter surface and the lower end internal diameter surface of the said connection member. Is preferred.

  In this way, by forming the protruding portion, at the time of starting insertion of the inner container, the friction caused by the contact between the lower end portion (small diameter portion) of the inner container and the connecting member is reduced, and this The inner container can be inserted smoothly. Moreover, at the end of the insertion of the inner container, the upper end portion (large-diameter portion) of the inner container is in strong contact with the protrusion, and the inner container is securely held by the connecting member (outer container). The position and number of the protrusions are not particularly limited, but it is preferable to form the protrusions at equal intervals in the circumferential direction, such as three at 120 ° intervals in the circumferential direction and four at 90 ° intervals.

  In each said structure, it is preferable that the said connection member is comprised with the injection molded article.

  Since this injection molded product has a predetermined rigidity, when the inner container is inserted into the connecting member, the connecting member is hardly deformed. For this reason, the inner container is inserted in an inclined state with respect to the outer container, and the gap between the inner container and the outer container is partially narrowed, or both the containers are partially in contact with each other to provide heat insulation. It is possible to prevent problems that are damaged.

  In each said structure, the material of the said inner side container and the said outer side container can be made into a respectively different material.

  Thus, by using different materials for both containers, for example, stainless steel is used for the inner container that requires heat resistance, while resin, titanium, aluminum, or an alloy thereof is used for the outer container. It is possible to select an optimum combination suitable for the purpose of use, such as reducing the weight.

  In each said structure, it can be set as the structure which can put the heat medium for cooling or heating in the said enclosed space.

  As described above, by allowing the heat medium to enter the sealed space, it is possible not only to maintain the temperature, but also to actively cool or heat the drink or the like placed in the inner container. Thereby, for example, an ice cream can be made in the inner container, or food can be cooked. As this heat medium, a cooling agent, ice water, hot water, etc. can be adopted.

  The heat insulating container according to the present invention is characterized in that a multi-wall structure is constituted by the inner container, the outer container, and the connecting member provided between the two containers. By comprising in this way, compared with the case where an inner side container and an outer side container are integrated by welding etc., the heat insulation container of the multi-wall structure which has heat insulation cold retention can be manufactured cheaply.

1st embodiment of the heat insulation container (mug cup) which concerns on this invention is shown, (a) is a top view, (b) is a side view Sectional drawing which follows the II-II line in FIG.1 (b) 2 is an enlarged cross-sectional view of the main part of FIG. The perspective view of the heat insulation container shown in FIG. 1 is an exploded side view of the heat insulating container shown in FIG. The perspective view of the heat insulation container shown in FIG. Sectional drawing which shows 2nd embodiment of the heat insulation container which concerns on this invention Sectional drawing which shows 3rd embodiment of the heat insulation container which concerns on this invention Sectional drawing which shows 4th embodiment of the heat insulation container which concerns on this invention Sectional drawing which shows 5th embodiment of the heat insulation container which concerns on this invention

  1st Embodiment of the heat insulation container 10 which concerns on this invention is shown in FIGS. The heat insulating container 10 is a mug having a double wall structure mainly used outdoors or in the home (hereinafter, the same reference numeral as that of the heat insulating container 10 is given). The mug 10 includes an inner container 11, an outer container 12, and a connection member 13 as main components.

  The inner container 11 is a bottomed cylindrical container having an upper end opened therein, which stores contents such as drinks. In the vicinity of the upper end portion of the outer peripheral surface of the inner container 11, a tapered surface 14 whose outer diameter is reduced toward the bottom portion is formed. In this embodiment, stainless steel is used as the material of the inner container 11, but a resin material can also be used if high strength and heat resistance are unnecessary.

  A lid 15 can be provided at the upper end opening of the inner container 11. The lid 15 is formed with a drinking mouth 16 and an air hole 17. At the same time that the drink in the inner container 11 flows out from the drinking mouth 16, air flows into the inner container 11 from the air hole 17, so that the drink can flow out smoothly. A sealing member 18 is provided on the outer peripheral edge of the lid 15. With this seal member 18, the lid 15 can be reliably fitted into the inner container 11.

  In this embodiment, as the heat insulating container 10, a mug 10 that can form a drinking mouth 16 and an air hole 17 in the lid 15 and can drink a drink in the inner container 11 with the lid 15 attached. However, the lid 15 can be made of a material and a structure having a heat insulating property and a sealing property without forming the drinking mouth 16 and the air hole 17. If it does in this way, it will become possible to use this heat insulation container 10 as uses other than the mug 10, for example, a pot and a jar.

  The outer container 12 is a bottomed cylindrical container that houses the inner container 11 and that has an open upper end. The outer container 12 is configured with the same outer diameter from the upper end to the lower end. In this embodiment, stainless steel that is the same material as the material of the inner container 11 is used, but a resin material is used to prevent heat from being transferred to the hand when the mug 10 is held by hand. You can also. Moreover, in order to give priority to weight reduction, titanium, aluminum, or an alloy thereof can be used.

  The inner diameter of the open end of the outer container 12 is designed to be the same size as the inner diameter of the open end of the inner container 11 (see FIG. 3). For this reason, the lid 15 provided in the inner container 11 can be provided in the upper end opening of the outer container 12.

  The connecting member 13 has a function of forming a sealed space of a predetermined size between the outer peripheral surface of the inner container 11 and the inner peripheral surface of the outer container 12 in a state where the inner container 11 is housed in the outer container 12. It is a member. The connecting member 13 is provided between the upper end portion of the inner container 11 and the upper end portion of the outer container 12. A tapered surface 19 is formed on the inner peripheral surface of the connecting member 13 such that the inner diameter is reduced toward the lower side in the axial direction. The tapered surface 19 is adapted to follow the tapered surface 14 formed on the inner container 11. The lower end side below the tapered surface 19 has a smaller diameter than the upper end side. The connecting member 13 is a resin material injection-molded product. This injection-molded product has a rigidity that does not greatly deform when the inner container 11 is inserted.

  A plurality of protrusions 20 and 21 (see FIG. 6) are formed on the inner diameter surface of the upper end portion and the inner diameter surface of the lower end portion of the connection member 13 so as to stand inward in the radial direction. The protrusions 20 and 21 are protrusions extending in the axial direction of the connection member 13. In this embodiment, the three protrusions 20 and 21 are formed at intervals of 120 degrees in the circumferential direction, but the position and number of the protrusions 20 and 21 are not particularly limited and can be changed as appropriate.

  A sealing member 22 is provided on the outer diameter surface of the lower end portion of the connecting member 13. Silicon resin is used as the material of the seal member 22. By providing this seal member 22, even when a rigid injection molded product is employed as a material for the connection member 13, the seal member 22 can securely fit the connection member 13 into the outer container 12. Can be secured. In this embodiment, the connection member 13 is provided with a seal member 22 that is a separate member. However, the connection member 13 and the seal member 22 are made of a relatively soft material such as silicon resin. It can also be constructed in one piece.

  As described above, when the connection member 13 is provided, a part of the upper end portion of the inner container 11 is covered with the connection member 13 (see FIG. 2), and therefore, the contact area between the user's lips and the upper end portion of the inner container 11. Can be reduced. For this reason, when a hot drink is put in this mug 10 (inner container 11), it can prevent that a user's lip contacts the inner container 11 and a user feels heat as much as possible.

  When assembling the mug 10, the connecting member 13 is first fitted into the upper end opening of the outer container 12 as shown in FIG. 6. Then, the inner container 11 is coaxially inserted into the outer container 12 through the inside of the connection member 13. At the start of insertion, the protrusion 21 formed on the inner diameter surface of the lower end portion of the connecting member 13 contacts the lower end portion (small diameter portion) of the inner container 11. Since this contact is almost a line contact and has an invitation shape, the friction between the inner container 11 and the connecting member 13 can be minimized. For this reason, this inner side container 11 can be inserted smoothly.

  Further, the tapered surface 14 formed on the inner container 11 and the tapered surface 19 formed on the connecting member 13 are in surface contact with each other, so that the inner container 11 and the outer container 12 are started when the inner container 11 is inserted. Even if the axial center is shifted, the shift is corrected, and the concentric state of the inner container 11 and the outer container 12 is ensured.

  Furthermore, at the end of the insertion, the protrusion 20 formed on the inner diameter surface of the upper end portion of the connection member 13 is in strong contact with the upper end portion (large diameter portion) of the inner container 11 so that the inner container 11 is connected. It is securely held by the member 13 (outer container 12). Thereby, it is possible to reliably prevent the inner container 11 from falling off when the mug 10 is tilted.

  In a sealed space formed between the inner container 11 and the outer container 12, a heat medium such as a cryogen, ice water, or hot water can be appropriately added. In this way, the stored contents can be actively cooled or heated, as well as being kept warm.

  A second embodiment of the mug 10 according to the present invention is shown in FIG. The basic configuration of the mug 10 is the same as that of the mug 10 according to the first embodiment, but the shapes of the inner container 11, the outer container 12, and the connecting member 13 are different.

  That is, the mug 10 according to the second embodiment has a tapered surface formed not only on the inner container 11 but also on the outer container 12, and has a slim outer shape on the lower end side compared to the upper end side of the mug 10. Further, the connection member 13 is provided with seal members 22 at two positions on the upper and lower sides of the outer periphery thereof, and the seal member 22 ensures airtightness between the outer container 12 and the connection member 13. An exterior member 23 is provided at the upper end of the outer peripheral surface of the outer container 12. By providing the exterior member 23, the gripping property of the mug 10 is enhanced.

  FIG. 8 shows a third embodiment of the mug 10 according to the present invention. The basic configuration of the mug 10 is the same as that of the mug 10 according to the first embodiment, but the shape of the connecting member 13 is different.

  That is, the connecting member 13 used in the mug 10 according to the third embodiment does not have the seal member 22, and the fitting force between the inner container 11 and the outer container 12 causes the inner container 11 to be interposed between the containers 11 and 12. The connecting member 13 is bitten. According to this configuration, since the shape of the connection member 13 can be simplified, there is a possibility that the manufacturing cost can be reduced. In this case, it is preferable to employ a flexible silicon resin as the material of the connection member 13. An exterior member 23 is provided at the upper end of the outer peripheral surface of the outer container 12. By providing the exterior member 23, the gripping property of the mug 10 is enhanced.

  FIG. 9 shows a fourth embodiment of the mug 10 according to the present invention. The basic configuration of the mug 10 is the same as that of the mug 10 according to the first embodiment, but the shapes of the inner container 11, the outer container 12, and the connecting member 13 are different.

  That is, the inner container 11 of the mug 10 according to the fourth embodiment has a tapered surface 14 formed in the vicinity of the upper end, and the outer diameter gradually decreases from the tapered surface 14 to the lower end. The outer container 12 has a shape in which the outer diameter gradually decreases from the vicinity of the upper end to the lower end. Thereby, compared with the upper end side of the mug 10, the lower end side has a slim outline. Further, the connecting member 13 does not have the seal member 22, and the connecting member 13 is inserted between the two containers 11 and 12 by the fitting force of the inner container 11 into the outer container 12. According to this configuration, since the shape of the connection member 13 can be simplified, there is a possibility that the manufacturing cost can be reduced as in the third embodiment.

  FIG. 10 shows a fifth embodiment of the mug 10 according to the present invention. The basic configuration of the mug 10 is the same as that of the mug 10 according to the first embodiment, but the shapes of the inner container 11, the outer container 12, and the connecting member 13 are different.

  That is, in the mug 10 according to the fifth embodiment, the inner container 11 and the outer container 12 have the same shape, and the outer diameter gradually decreases from the vicinity of the upper end portion to the lower end portion thereof. Further, the connecting member 13 does not have the seal member 22, and the connecting member 13 is inserted between the containers 11 and 12 by the fitting force of the inner container 11 into the outer container 12. According to the above, a mold for manufacturing the inner container 11 and the outer container 12 can be shared, and the shape of the connecting member 13 can be simplified, so that the manufacturing cost may be reduced.

  The above embodiments are merely examples in all respects, and the inner container 11 and the outer container can be used as long as the problem of the present invention of simply configuring the multi-walled mug 10 having heat insulation and cold insulation can be solved. 12, the shape of components, such as the connection member 13, etc. can be changed suitably.

  For example, in each of the above-described embodiments, the mug 10 having a double wall structure is illustrated, but a multi-wall structure having three or more walls can be used. If it does in this way, there exists a possibility that the thermal insulation cool property of the contents of mug 10 can be raised further.

  The double wall structure shown in each of the above-described embodiments can ensure the heat insulation and coolness of the mug 10, but a valve body or an air pump is provided on a part of the outer container 12 or the connecting member 13 of the mug 10. It is good also as a structure which can provide a function and can evacuate the inside of this double wall easily (it is set as a vacuum state or a pressure reduction state). In this way, it is possible to further improve the heat insulation and coolability as compared with the case where there is an air layer at atmospheric pressure in the double wall.

10 Insulated container (mug)
DESCRIPTION OF SYMBOLS 11 Inner container 12 Outer container 13 Connection member 14 Tapered surface 15 (inner container) Lid 16 Spout 17 Air hole 18 Seal member 19 (of cover) Taper surface 20 (Upper end) Projection 21 Protruding part 22 (of lower end part) Sealing member 23 (of connecting member) Exterior member

Claims (6)

A bottomed cylindrical inner container (11) having an open upper end;
A bottomed cylindrical outer container (12) having an upper end opened, which accommodates the inner container (11);
In a state where the inner container (11) is accommodated in the outer container (12), a predetermined size is provided between the outer peripheral surface of the inner container (11) and the inner peripheral surface of the outer container (12). A connecting member (13) provided between the upper end of the inner container (11) and the upper end of the outer container (12), which forms a sealed space;
Insulated container with.   A tapered surface (14) whose outer diameter is reduced toward the bottom of the inner container (11) is formed on the outer peripheral surface of the inner container (11), and the inner peripheral surface of the connecting member (13). The taper surface (19) which follows the taper surface formed in the said inner side container (11) in which an internal diameter reduces toward the axial direction of this connection member (13) is formed. Insulated container.   The heat insulation container according to claim 2, wherein a plurality of projecting portions (20, 21) standing radially inward are formed on the inner diameter surface of the upper end portion and the inner diameter surface of the lower end portion of the connection member (13).   The heat insulation container of any one of Claim 1 to 3 with which the said connection member (13) is comprised by the injection molded article.   The heat insulation container according to any one of claims 1 to 4, wherein the inner container (11) and the outer container (12) are made of different materials.   The heat insulating container according to any one of claims 1 to 5, wherein a heat medium for cooling or heating can be placed in the sealed space.

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