Heat-insulating container and container with cover

Abstract

The present invention provides a heat-insulating container capable of joining a bottom member constituting an outer container and a joining end of a cylindrical member with high precision, and also capable of obtaining a satisfactorily processed joining end. A heat-insulating container (1A) in which a vacuum heat-insulating layer (6) is provided between an outer container (4) and an inner container, the outer container comprising a bottomed cylindrical bottom member (41) that forms the bottom (4a) side thereof and a cylindrical cylindrical member (42) that forms the cylindrical part (4b) side thereof, the outer container having: an inner joining end part (40a) that joins the bottom member (41) and the cylindrical member (42); the inclined part (41d) is folded upwards from the periphery of the bottom of the bottom part and is formed by bending an opening end (41b) of the bottom part towards the inner side; and an outer joining end portion (40b) including a lower opening end (42b) formed by extending the lower side of the cylindrical member in the vertical direction, the outer joining end portion (40b) joining the contact portions (41a, 42a) of the inner joining end portion and the outer joining end portion in a state in which the outer surface of the inclined portion (41d) faces the inner surface of the lower opening end.

Description

Technical Field

[0001] The invention relates to a heat-insulating container and a container with a cover. Background Art

[0002] For example, there is a heat-insulating container, which includes a metal outer container with one end open and an inner container, the open ends of which are joined to each other in a state where the inner container is accommodated inside the outer container, and a vacuum insulation layer is provided between the outer container and the inner container. Such heat-insulating containers are widely used in beverage containers such as kettles and mugs with heat-insulating and cold-insulating functions, food containers with heat-insulating functions, cooking machines, etc.

[0003] However, in the above-mentioned insulated container, the joint ends of the bottom cylindrical bottom member forming the bottom side of the outer container and the cylindrical body member forming the cylindrical body side of the outer container are joined by welding in a state where the joint ends are placed opposite to each other (for example, refer to the following patent documents 1 and 2).

[0004] In the invention described in Patent Document 1 below, a bottom cover made of resin covering the joint between the bottom member and the barrel member constituting the outer container, i.e., the bottom side, is installed. However, when such a bottom cover is installed, not only the number of components is increased, but also the weight is increased.

[0005] On the other hand, in the invention described in Patent Document 2 below, in the bottom member and the body portion constituting the outer container, the peripheral raised portion of the bottom member is provided at a position opposite to the end side of the body portion, the end of the body portion is stopped at the step portion of the peripheral raised portion, and the step portion of the bottom member and the end of the body portion are welded. However, in such a structure, since a size difference is provided in advance between the peripheral raised portion of the bottom member and the body portion, it is difficult to manage the size, and after welding, a height difference is generated on the side portion of the outer container, which impairs the appearance.

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 10-14786

[0007] Patent Document 2: Japanese Patent Application Publication No. 2011-206408 Summary of the invention

[0008] The present invention is proposed in view of the existing situation, and its purpose is to provide an insulated container in which a vacuum insulation layer is provided between an outer container and an inner container, in which the joint end portions of a bottom member and a cylindrical member constituting the outer container can be joined with high precision and a well-processed joint portion can be obtained, as well as a covered container having such an insulated container.

[0009] In order to achieve the above-mentioned object, the present invention provides the following means.

[0010] [1] A heat-insulating container comprising an outer container and an inner container made of metal with one end open, the inner container being housed inside the outer container, the open ends of the containers being joined to each other, and a vacuum heat-insulating layer being provided between the outer container and the inner container.

[0011] The above-mentioned heat-insulating container is characterized in that:

[0012] The outer container includes a bottom member having a bottomed cylindrical shape forming a bottom side thereof, and a cylindrical body member having a cylindrical shape forming a body side thereof.

[0013] The outer container comprises: an inner joint end portion, the inner joint end portion comprising an inclined portion, the inclined portion being formed by folding upward from the periphery of the bottom of the bottom member and bending the opening end of the bottom member toward the inside; and an outer joint end portion, the outer joint end portion comprising the lower opening end of the cylindrical member,

[0014] The inner joining end portion and the abutting portion of the outer joining end portion are joined in a state where the outer surface of the inclined portion faces the inner surface of the lower opening end.

[0015] [2] The heat-insulating container according to [1] above, characterized in that:

[0016] The contact portion of the inner joint end portion is located at a corner portion formed by bending the bottom portion of the bottom member or at the inclined portion.

[0017] [3] The heat-insulating container according to [1] above, characterized in that:

[0018] The lower side of the above-mentioned lower opening end extends in the vertical direction.

[0019] [4] The heat-insulating container according to [1] above, characterized in that:

[0020] The opening end of the bottom member is bent so as to be located between the inner surface of the bottom portion and the lower opening end of the tubular member.

[0021] [5] The heat-insulating container according to [1] above, characterized in that:

[0022] The cylindrical member has a tapered portion whose diameter gradually decreases upward.

[0023] [6] The heat-insulating container according to [1] above, characterized in that:

[0024] The bottom member has a concentric circular concave-convex structure on its bottom.

[0025] [7] A container with a lid, characterized in that it comprises:

[0026] The heat-insulating container according to any one of the above-mentioned items [1] to [6]; and

[0027] A cover unit mounted on the above-mentioned insulated container.

[0028] As described above, according to the present invention, there is provided an insulating container in which a vacuum insulation layer is provided between an outer container and an inner container, in which the joint ends of a bottom member and a cylindrical member constituting the outer container can be joined with high precision and a well-processed joint portion can be obtained, as well as a container with a lid having such an insulating container. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a side view showing the appearance of the heat-insulating container according to the first embodiment of the present invention.

[0030] Figure 2 Yes means Figure 1 A cross-sectional view of the structure of the insulated container is shown.

[0031] Figure 3 Yes Figure 2 A cross-sectional view of the insulated container with the enclosed portion A enlarged as shown in FIG.

[0032] Figure 4 It is a perspective view showing the appearance of a container with a lid according to a second embodiment of the present invention.

[0033] Figure 5 Yes means Figure 4 A cross-sectional view of the structure of a container with a lid is shown.

[0034] Figure 6 Yes Figure 5 A cross-sectional view of the insulated container with the enclosed portion B enlarged as shown.

[0035] Description of Reference Numerals

[0036] 1A, 1B…insulated container; 2…container body; 3…handle part; 4…outer container; 5…inner container; 6…vacuum insulation layer; 40a…inner joining end; 40b…outer joining end; 41…bottom part; 41a…abutment part; 41b…opening end; 41c…bent part; 41d…inclined part; 42…cylindrical part; 42a…abutment part; 42b…lower opening end; 42c…tapered part; 100…container with lid; 101…container body; 102…lid unit. DETAILED DESCRIPTION

[0037] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0038] (First Embodiment)

[0039] First, as a first embodiment of the present invention, for example Figure 1 to Figure 3 The heat-insulating container 1A shown is described. Figure 1 It is a side view showing the appearance of the heat-insulating container 1A. Figure 2 It is a cross-sectional view showing the structure of the heat-insulating container 1A. Figure 3 Yes Figure 2 A cross-sectional view of the insulated container 1A showing an enlarged view of the enclosed portion A shown in FIG.

[0040] like Figure 1 to Figure 3 As shown, the insulated container 1A of this embodiment comprises: a container body 2 having a vacuum insulation structure; and a handle component 3 installed on the side of the container body 2, and the present invention is applied to a mug that can keep the beverage (liquid) contained in the container body 2 warm or cold.

[0041] The container body 2 is composed of a double-layered container, which includes an outer container 4 and an inner container 5, which are cylindrical and have a bottom and are made of, for example, stainless steel, and the inner container 5 is housed inside the outer container 4, and the open ends of the two containers are joined together. In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking the exhaust hole provided at the bottom 4a of the outer container 4 in a chamber that is decompressed (evacuated) to a high vacuum.

[0042] The handle member 3 is a portion for the user to hold, and has a shape extending in the up-down direction and having both ends bent in the same direction. Both ends of the handle member 3 are attached to the side surface of the outer container 4 by screw fastening or the like.

[0043] In the present embodiment, the container body 2 has a tapered shape, and the tapered shape is formed by the outer container 4 formed into a bottomed cylindrical shape and the inner container 5, in which the outer container 4 gradually decreases in diameter toward the upper side. In addition, the shape of the heat-insulating container 1A is not particularly limited, and the shapes of the container body 2 and the handle part 3 can be appropriately changed according to the size, design, etc. In addition, the outer surface of the outer container 4 can also be painted, printed, etc.

[0044] In the heat-insulating container 1A of the present embodiment, the outer container 4 is composed of a bottom member 41 of a bottomed cylindrical shape constituting the bottom 4a side thereof and a cylindrical body member 42 of a cylindrical shape forming the cylindrical body portion 4b side thereof.

[0045] In the heat-insulating container 1A of this embodiment, the inner container 5 is housed inside the cylindrical member 42, and the abutting portions are joined by welding in a state where the opening ends thereof are opposed to each other. Thereafter, the abutting portions are joined by welding in a state where the bottom member 41 and the cylindrical member 42 are fitted together, thereby forming the outer container 4 and the container body 2.

[0046] In addition, the outer container 4 (bottom member 41 and cylinder member 42) and the inner container 5 can be made of metals such as titanium, aluminum, magnesium, or alloys thereof other than the above-mentioned stainless steel. For the joining by welding, a welding method such as laser welding is used.

[0047] In addition, Figure 2 In the figure, the joining portion (boundary) between the inner container 5 and the cylindrical member 42 and the joining portion (boundary) between the bottom member 41 and the cylindrical member 42 are shown, but after joining, the above-mentioned joining portion is melted by welding, thereby forming a weld seam all around the joining portion. In addition, the weld seam is processed into a smooth surface by grinding and polishing after welding.

[0048] However, in the heat-insulating container 1A of the present embodiment, if Figure 3 As shown, the outer container 4 has an inner joining end 40a and an outer joining end 40b, which are joined to each other in the abutting portion (hereinafter referred to as "abutting portion") 41a, 42a of the bottom member 41 and the cylindrical member 42.

[0049] Specifically, the inner joint end portion 40a includes: a curved portion 41c formed by folding upward from the periphery of the bottom portion 4a of the bottom member 41 and bending the open end 41b of the bottom member 41 toward the inside; and an inclined portion 41d formed by flattening a portion of the outer surface of the curved portion 41c. On the other hand, the outer joint end portion 40b includes a lower open end 42b formed by extending the lower side of the cylindrical member 42 in the vertical direction.

[0050] The bent portion 41c is bent so that the opening end 41b of the bottom member 41 is located between the inner surface of the bottom portion 4a and the inner surface of the lower opening end 42b.

[0051] The inclined portion 41d is flattened while a portion of the curved portion 41c is inclined inward. By providing such an inclined portion 41d in the inner joint end portion 40a, the inner joint end portion 40a of the bottom member 41 and the outer joint end portion 40b of the barrel member 42 are easily aligned before welding.

[0052] In addition, in this embodiment, the bent portion 41c and the inclined portion 41d are provided, but in order to facilitate the fitting of the bottom member 41 and the cylindrical member 42, it is sufficient to bend the open end 41b inward. Therefore, it is also possible to provide only the inclined portion 41d and omit the bent portion 41c.

[0053] The lower opening end 42b is located below the cylindrical member 42 and is formed in a straight line in the vertical direction in cross-sectional view. In addition, the cylindrical member 42 has a tapered portion 42c which is gradually reduced in diameter from the lower opening end 42b toward the upper side.

[0054] The contact portion 41a of the inner joint end portion 40a is located at the corner 41e or the inclined portion 41d between the bottom portion 4a and the inclined portion 41d of the bottom member 41. On the other hand, the contact portion 42a of the outer joint end portion 40b is located at the lower opening end 42b of the cylindrical member 42.

[0055] Therefore, the bottom member 41 and the cylindrical member 42 can be joined by aligning the radial positions of the abutting portion 41a and the abutting portion 42a, so that the radial dimension adjustment becomes easy. For example, in the manufacturing process, when the outer diameter of the bottom member 41 is larger than the outer diameter of the cylindrical member 42, the outer diameter can be reduced by adjusting the position of the corner of the inclined portion 41d of the bottom member 41. In addition, the abutting portion 41a of the inner side joint end portion 40a can be provided at the inclined portion 41d or at the corner 41e.

[0056] A concave-convex structure in the form of concentric circles is provided on the bottom 4a of the bottom member 41. In the present embodiment, a recessed portion 41f is provided in which a portion of the bottom 4a of the bottom member 41 is recessed upward in a circular ring shape. In the heat-insulating container 1A of the present embodiment, by providing the concave-convex structure including such a recessed portion 41f on the bottom 4a of the bottom member 41, the strength of the bottom 4a of the bottom member 41 can be improved by work hardening.

[0057] The concavo-convex structure is not limited to the above-mentioned structure with the concave portion, and may be configured to include, for example, a convex portion formed by partially protruding the bottom portion 4a of the bottom member 41 in a circular ring shape downward.

[0058] In the heat-insulating container 1A of this embodiment, the abutting portions 41a and 42a of the inner joint end portion 40a and the outer joint end portion 40b are joined while the outer surface of the inclined portion 41d and the inner surface of the lower opening end 42b are opposed to each other. The inner joint end portion 40a and the outer joint end portion 40b are joined using a welding method such as laser welding.

[0059] In addition, the position where the contact parts 41a and 42a are joined may be the inner surface side of the corner part 41e and the lower opening end 42b, or the inclined part 41d and the front end part of the lower opening end 42b.

[0060] In addition, Figure 3, the joining portion (boundary) of the inner joining end portion 40a and the outer joining end portion 40b is shown, but after joining, the joining portion is melted by welding, thereby forming a weld seam over the entire circumference of the abutting portions 41a and 42a of the inner joining end portion 40a and the outer joining end portion 40b. In addition, the weld seam is processed into a smooth surface by grinding and polishing after the welding process.

[0061] In addition, in the insulated container 1A of this embodiment, in order to facilitate the alignment of the abutment parts 41a and 42a, the lower opening end 42b is a straight line extending in the vertical direction, but is not limited to such a shape, and can also be a tapered shape or a shape with rounded corners.

[0062] As described above, in the insulated container 1A of this embodiment, the inner joining end 40a of the bottom member 41 and the outer joining end 40b of the cylindrical member 42 constituting the outer container 4 can be joined with high precision, and a well-processed joint can be obtained.

[0063] In particular, in the insulated container 1A of this embodiment, the joining portion between the bottom component 41 and the cylindrical component 42 constituting the outer container 4 is located at the outermost peripheral portion (peripheral portion) on the lower surface side of the bottom 4a, so that no height difference is generated in the joining portion and there is no need to install a bottom cover to cover the joining portion.

[0064] In addition, in the insulated container 1A of this embodiment, it is possible to simplify the manufacturing process and reduce the manufacturing cost while preventing the weld from becoming larger. In addition, by reducing the thickness of the outer container 4 and the inner container 5, it is also possible to reduce the weight of the insulated container 1A and improve the insulation performance.

[0065] In particular, in the insulated container 1A of this embodiment, the outer container 4 is composed of two separate parts, namely the bottom part 41 and the cylindrical part 42, so that the plate thickness of the bottom part 41 requiring strength can be thicker than the plate thickness of the cylindrical part 42, or the above-mentioned outer container 4 can be formed into a conical shape.

[0066] In the heat-insulating container 1A of the present embodiment, the cylindrical member 42 is roughly conical in shape, but by adjusting the joining angles of the abutment portions 41a and 42a, the outer container 4 can also be roughly cylindrical in shape, or can be an inverted conical shape that gradually decreases in diameter downward.

[0067] (Second Embodiment)

[0068] Next, as a second embodiment of the present invention, for example, Figures 4 to 6 The container 100 with a lid which is a heat-insulating container 1B shown will be described.

[0069] also, Figure 4 It is a perspective view showing the appearance of the container 100 with a lid. Figure 5 It is a cross-sectional view showing the structure of the container 100 with a lid. Figure 6 Yes Figure 5 1 is a cross-sectional view of the heat-insulating container 1B in which the enclosed portion B shown in FIG. In the following description, description of the same parts as those of the above-mentioned heat-insulating container 1A is omitted, and the same reference numerals are given in the drawings.

[0070] like Figures 4 to 6 As shown, the covered container 100 of the present embodiment comprises: a container body 101 constituted by the insulated container 1B of the present embodiment, and a cover unit 102 installed on the container body 101. The present invention is applied to a desktop pot (beverage container) that can keep a beverage (liquid) contained in the container body 101 warm or cold by virtue of the container body 101 having a vacuum insulation structure.

[0071] In the lidded container 100 of the present embodiment, a side provided with a pouring port 11 described later is referred to as the “front side”, and a side provided with a handle 12 located on the opposite side to the pouring port 11 is referred to as the “rear side”.

[0072] The container body 101 is constituted by a double-layered container similarly to the container body 2, and the double-layered container is formed by having an outer container 4 and an inner container 5 with a bottom, which are made of, for example, stainless steel, and the inner container 5 is housed inside the outer container 4, and the open ends of the two containers are joined to each other. In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking the exhaust hole provided at the bottom 4a of the outer container 4 in a chamber that is decompressed (evacuated) to a high vacuum.

[0073] In the present embodiment, the heat-insulating container 1B constituting the container body 101 has a tapered shape formed by the outer container 4 and the inner container 5 being formed into a bottomed cylindrical shape and the outer container 4 gradually decreasing in diameter toward the upper side.

[0074] The outer container 4 constituting the container body 101 has: a substantially circular bottom 4a; a cylindrical body 4b that rises substantially cylindrically from the outer periphery of the bottom 4a; a substantially cylindrical neck 4c that is reduced in diameter at the upper side of the cylindrical body 4b; and a shoulder 4d that is gradually reduced in diameter from the cylindrical body 4b toward the neck 4c. In addition, the upper end of the neck 4c is circularly opened as the upper opening 101a of the container body 101.

[0075] On the other hand, the inner container 5 constituting the container body 101 has a shape in which the inner peripheral side of the neck portion 4c is reduced in diameter compared with the inner peripheral side of the barrel portion 4b. In addition, the inner container 5 has an extension portion 7 formed by protruding the inner peripheral side of the neck portion 4c over the entire circumference.

[0076] The shape of the container body 101 is not particularly limited, and the shape of the heat-insulating container 1B can be appropriately changed according to size, design, etc. The outer surface of the outer container 4 may be painted, printed, etc.

[0077] In the heat-insulating container 1B of the present embodiment, the outer container 4 is composed of a bottom member 41 having a bottomed cylindrical shape constituting the bottom 4a side thereof and a cylindrical body member 42 having a cylindrical shape constituting the cylindrical body portion 4b side thereof.

[0078] In the heat-insulating container 1B of this embodiment, the inner container 5 is housed inside the cylindrical member 42, and the abutting portions are joined by welding in a state where the opening ends thereof are opposed to each other. Thereafter, the abutting portions are joined by welding in a state where the bottom member 41 and the cylindrical member 42 are fitted together, thereby forming the outer container 4 and the container body 101.

[0079] In addition, Figure 4 In the figure, the joining portion (boundary) between the inner container 5 and the cylindrical member 42 and the joining portion (boundary) between the bottom member 41 and the cylindrical member 42 are shown, but after joining, the above-mentioned joining portion is melted by welding, thereby forming a weld seam all around the joining portion. In addition, the weld seam is processed into a smooth surface by grinding and polishing after welding.

[0080] The cap unit 102 includes a cap body 8 mounted on the neck portion 4 c of the container body 101 , and a cap body 9 fitted into the inner side of the cap body 8 through a liquid passage 8 a provided in the cap body 8 .

[0081] The cap body 8 is a shoulder member made of, for example, a heat-resistant resin, has a circular liquid passage 8a communicating with the inside of the container body 2, and is mounted on the neck portion 4c of the container body 101 via an opening side packing 10A and a shoulder packing 10B.

[0082] The cap body 8 has a pouring port 11 for pouring the beverage in the container body 101 to the outside, and a grip 12 for the user to hold.

[0083] The pouring port 11 is located on the front side of the cap body 8 and is provided to protrude from one end of the upper portion of the liquid passage 8a in the direction of expansion. The handle 12 is provided to protrude rearward from the side opposite to the pouring port 11, i.e., the rear side of the cap body 8 and extend downward.

[0084] The cover body 9 is a plug body having a heat insulating structure, and is detachably attached to the cover body 8 so as to be able to open and close the liquid passage port 8 a.

[0085] Specifically, the cover body 9 includes an upper cover 13 made of, for example, a heat-resistant resin and a middle plug 14 . When the middle plug 14 is inserted into the cover body 8 from the liquid passage 8 a , the cover body 9 can close the liquid passage 8 a .

[0086] The lid body 9 has a liquid passage groove 15 that forms a flow path R for the beverage in the container body 2 to flow out together with the pouring port 11 , and a ventilation groove 16 that introduces external air into the container body 2 .

[0087] In the cap unit 102 , in a state where the middle stopper 14 is fitted into the inner side of the cap body 8 from the liquid passage port 8 a , a flow path R is formed between the pouring port 11 and the liquid passage groove 15 facing each other.

[0088] However, in the heat-insulating container 1B of the present embodiment, if Figure 6 As shown, the outer container 4 includes an inner joint end portion 40 a and an outer joint end portion 40 b , and the inner joint end portion 40 a and the outer joint end portion 40 b are joined to each other at contact portions 41 a and 42 a of the bottom member 41 and the cylindrical member 42 .

[0089] Specifically, the inner joint end portion 40a includes: a curved portion 41c formed by folding upward from the periphery of the bottom 4a of the bottom member 41 and bending the open end 41b of the bottom member 41 toward the inside; and an inclined portion 41d formed by flattening a portion of the outer surface of the curved portion 41c. On the other hand, the outer joint end portion 40b includes a lower open end 42b formed by extending the lower side of the cylindrical member 42 in the vertical direction. In addition, the cylindrical member 42 has a tapered portion 42c formed by gradually reducing the diameter from the lower open end 42b toward the top.

[0090] The contact portion 41a of the inner joint end portion 40a is located at the corner 41e or the inclined portion 41d between the bottom portion 4a and the inclined portion 41d of the bottom member 41. On the other hand, the contact portion 42a of the outer joint end portion 40b is located at the lower opening end 42b of the cylindrical member 42.

[0091] Therefore, the bottom member 41 and the cylindrical member 42 can be joined by aligning the radial positions of the abutting portion 41a and the abutting portion 42a, so that the radial dimension adjustment becomes easy. For example, in the manufacturing process, when the outer diameter of the bottom member 41 is larger than the outer diameter of the cylindrical member 42, the outer diameter can be reduced by adjusting the position of the corner of the inclined portion 41d of the bottom member 41. In addition, the abutting portion 41a of the inner side joint end portion 40a can be provided at the inclined portion 41d or at the corner 41e.

[0092] A concave-convex structure is provided on the bottom 4a of the bottom member 41. In the present embodiment, two convex portions 41g are arranged concentrically in a circular pattern so that a portion of the bottom 4a protrudes downward. In the heat-insulating container 1B of the present embodiment, by providing the concave-convex structure including such convex portions 41g on the bottom 4a of the bottom member 41, the strength of the bottom 4a of the bottom member 41 can be improved by work hardening.

[0093] In the heat-insulating container 1B of the present embodiment, the contact portions 41a and 42a of the inner and outer joint ends 40a and 40b are joined with the outer surface of the inclined portion 41d facing the inner surface of the lower opening end 42b.

[0094] In addition, the position where the contact parts 41a and 42a are joined may be the inner surface side of the corner part 41e and the lower opening end 42b, or the inclined part 41d and the front end part of the lower opening end 42b.

[0095] In addition, Figure 6 , the joining portion (boundary) of the inner joining end portion 40a and the outer joining end portion 40b is shown, but after joining, the joining portion is melted by welding, thereby forming a weld seam over the entire circumference of the abutting portions 41a and 42a of the inner joining end portion 40a and the outer joining end portion 40b. In addition, the weld seam is processed into a smooth surface by grinding and polishing after the welding process.

[0096] In addition, in the insulated container 1A of this embodiment, in order to facilitate the alignment of the abutment parts 41a and 42a, the lower opening end 42b is a straight line extending in the vertical direction, but is not limited to such a shape, and can also be a tapered shape or a shape with rounded corners.

[0097] As described above, in the insulated container 1B of this embodiment, the inner joining end 40a of the bottom member 41 and the outer joining end 40b of the cylindrical member 42 constituting the outer container 4 can be joined with high precision, and a well-processed joining end can be obtained.

[0098] In particular, in the insulated container 1B of this embodiment, the joining end portions of the bottom component 41 and the cylindrical component 42 constituting the outer container 4 are located at the outermost peripheral portion (peripheral portion) on the lower surface side of the bottom 4a, so that no height difference is generated at the joining portion and there is no need to install a bottom cover to cover the joining portion.

[0099] In addition, in the insulated container 1B of this embodiment, it is possible to simplify the manufacturing process and reduce the manufacturing cost while preventing the weld from becoming larger. In addition, by reducing the thickness of the outer container 4 and the inner container 5, it is also possible to reduce the weight of the insulated container 1B and improve the insulation performance.

[0100] In particular, in the insulated container 1B of this embodiment, the outer container 4 is composed of two separate parts, namely the bottom part 41 and the cylindrical part 42, so that the plate thickness of the bottom part 41 requiring strength can be thicker than the plate thickness of the cylindrical part 42, or the above-mentioned outer container 4 can be formed into a conical shape.

[0101] In the heat-insulating container 1A of the present embodiment, the cylindrical member 42 is roughly conical in shape, but by adjusting the joining angles of the abutment portions 41a and 42a, the outer container 4 can also be roughly cylindrical in shape, or can be an inverted conical shape that gradually decreases in diameter downward.

[0102] In addition, the present invention is not necessarily limited to the above-mentioned embodiment, and various modifications can be added within the scope not departing from the gist of the present invention.

[0103] For example, in the first embodiment, the heat-insulating container 1A applied to the mug is exemplified, but the present invention can be widely applied to heat-insulating containers such as tea cups and tumblers.

[0104] On the other hand, in the second embodiment, the container with lid 100 applied to the tabletop pot is exemplified, but the present invention can be widely applied to containers with lids including a lid unit attached to a container body with an upper opening.

Claims

1. A heat-insulating container comprising an outer container and an inner container made of metal with one end open, the inner container being housed inside the outer container and the open ends of the inner container being joined to each other, and a vacuum heat-insulating layer being provided between the outer container and the inner container, The thermally insulated container is characterized in that The outer container includes a bottom member having a bottomed cylindrical shape forming a bottom side thereof, and a cylindrical body member having a cylindrical shape forming a body side thereof, and The outer container comprises: an inner joint end portion, the inner joint end portion comprising an inclined portion, the inclined portion being formed by folding upward from the periphery of the bottom of the bottom member and bending the opening end of the bottom member toward the inside; and an outer joint end portion, the outer joint end portion comprising the lower opening end of the barrel member, The inner joining end portion and the outer joining end portion are joined to each other at the contact portion in a state where the outer surface of the inclined portion faces the inner surface of the lower opening end.

2. The heat-insulating container according to claim 1, characterized in that: The contact portion of the inner joint end portion is located at a corner portion formed by bending the bottom portion of the bottom member, or at the inclined portion.

3. The heat-insulating container according to claim 1, characterized in that: The lower side opening end extends below in the vertical direction.

4. The thermal insulation container according to claim 1, characterized in that: The open end of the bottom member is bent so as to be located between the inner surface of the bottom portion and the lower open end of the tubular member.

5. The thermal insulation container according to claim 1, characterized in that: The cylindrical member has a tapered portion whose diameter gradually decreases upward.

6. The thermal insulation container according to claim 1, characterized in that: The bottom member has a concave-convex structure in the form of concentric circles at its bottom.

7. A container with a cover, characterized in that: have: The thermally insulated container according to any one of claims 1 to 6; and A cover unit is mounted on the thermally insulated container.

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