JPH0233727Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metal vacuum double-insulated container with a vacuum insulated space between each metal inner container and outer container.

In this type of insulated container, both the inner container and outer container that form the vacuum insulated space are made of metal, so
Excellent impact resistance and durability. However, the inner container and outer container are made of stainless steel, which has low thermal conductivity among metal materials, so as not to reduce the insulation effect of forming a vacuum insulation space as much as possible. Even if it is satisfactory in terms of hygiene and durability, it is not possible to suppress heat radiation to the outside due to heat conduction of internal heat from the inner container to the outer container, and the insulation performance is still not fully satisfactory.

On the other hand, in order to form a metal vacuum double container, the openings of a metal inner container and an outer container are joined together using insulating rubber as a shoulder member.
It is known from Japanese Patent Publication No. 49-41963.
In this case, it is possible to suppress a decrease in heat retention due to heat conduction from the inner container to the outer container. However, although it is a double container body made of metal, the non-metallic members and rubber members that form part of its outer shape are exposed, making it vulnerable to external shocks and having a weak supporting force for the inner container. To compensate for this, spacers are provided at various locations between the inner and outer containers, but this increases the number of parts and assembly man-hours, resulting in higher costs, and the strength does not improve much.

In order to achieve satisfactory strength, a structure in which the metal bodies of the inner container and outer container and the connecting double cylindrical wall formed on the metal shoulder member are connected with a synthetic resin adhesive or the like to have a heat insulating effect is also disclosed. It is known from Publication No. 56-75123. However, even if such a heat insulating structure is provided, the metal shoulder member itself is continuous from the inside of the container to the outside of the container, so it is not possible to suppress the escape of heat due to heat conduction from the inside of the container to the outside of the container.

Therefore, this invention creates a vacuum insulated space between the metal inner container and the outer container, and in a metal vacuum double-insulated container in which a stopper is inserted into the mouth, It is an object of the present invention to provide a metal vacuum double-insulated container that can eliminate the above-mentioned conventional drawbacks by providing a heat-insulating joint in which the mouth and body are connected by a heat-insulating member at a position where a stopper is inserted. That is.

To explain the embodiment shown in FIGS. 1 and 2, a heat insulating body 2 with a double wall as a vacuum heat insulating space 1 has a double wall formed by an inner container 3 and an outer container 4 made of stainless steel. By brazing one of the joints 5 formed in the structure and provided around the vacuum insulation space 1 in the vacuum space,
A vacuum insulation space 1 is provided between the inner and outer containers 3 and 4. The joint part 5 is the opening part 3 of the inner container 3 and the outer container 4.
In addition to the joints at a and 4a, in order to facilitate the formation of the inner container 3 and outer container 4,
It can be provided arbitrarily depending on the shape, size, etc. In the embodiment, the last joint to form the vacuum insulation space 1 is the lid plate 7 for the bottom opening 6 of the outer container 4.
However, it can be freely selected from the viewpoints of workability and economic efficiency, and a deaeration chip is provided in a part of the outer container 4, and the air between the inner and outer containers 3 and 4 is removed from there. The vacuum insulation space 1 can also be formed by closing the degassing tip.

A heat insulating joint part 9 is formed at the mouth part 3a of the inner container 3, in which an annular heat insulating member 8 is interposed along the entire circumference. The heat insulating member 8 is made of a material such as ceramic, pottery, synthetic resin, glass, etc., which has lower thermal conductivity than stainless steel and is not breathable.
Also, in order to form the vacuum heat insulating space 1, brazing or the like is performed to prevent air leakage. Heat insulation member 8
is formed to have an H-shaped cross section so as to fit with each joint edge 10, 11 of the inner container mouth portion 3a, so that it is easy to join and has sufficient joint strength and airtightness. The heat insulating member 8 has an E-shaped cross-sectional shape as shown in FIG. 3 or a T-shaped cross-sectional shape as shown in FIG.
11 or by making them come into contact with each other, the same joining as described above can be achieved.

The container body 2 has a synthetic resin decorative bottom 1 on its bottom outer surface.
2 are attached by force fitting 13, and a stopper 14 is removably screwed 15 on the outside of the bottom 12. 1
Reference numeral 6 denotes a rotation-preventing fitting portion between the outer container 4 and the bottom 12. A shoulder member 17 made of synthetic resin is applied to the shoulder 4b formed at the base of the mouth 4a of the outer container 4, and is force-fitted 18 to the outer container 4, and the shoulder 4b is spot welded or the like. It is fixed with screws 20 to a mounting bracket 19 which is attached to the mounting bracket 19. 2
1 is a seal packing between the shoulder member 17 and the outer container 4.

An outer peripheral attachment ring 23 of a synthetic resin spout member 22 facing into the inner container mouth 3a is screwed onto a screw 24 on the outer periphery of the outer container mouth 4a, and an O. The ring 24 is the inner container opening 3
The spout member 22 is attached to the mouth of the vessel body 2 in a state in which it is in pressure contact with the inner circumferential stepped portion 3b formed on the inner circumference of the base of the container 2. The mounting ring 23 is separate from the spout member 22, and the upper inner flange 23a is attached to the spout member 22.
The fitting ring 23 is rotatably fitted into the outer circumferential groove 22 a of the upper end of the spout member 22 so that the rotation of the attachment ring 23 does not reach the spout member 22 . A female screw hole 26 for screwing the stopper 25 is provided at the lower end of the inner container mouth portion 3a of the spout member 22.
is formed in the center, and a plurality of outflow holes 27 are formed around the female screw hole 26.

The plug body 25 has a head 25a that covers the spout member 22, and a screw 28 that is screwed into the female screw hole 26.
An O-ring 29 attached to the outer periphery of the portion 25b having a larger diameter than the upper portion is connected to each hole 2 of the spout member 22.
6, 27 In a state in which it is in pressure contact with the inner circumferential stepped portion 30 on the opening portion, it becomes a closed state that prevents the content liquid 31 from flowing out even if the container body 2 is tilted, and the head 25a is in contact with the upper end of the spout member 22. is close to or in contact with the draining edge 22a, and allows the content liquid to flow out through the outflow hole 27 when the O-ring 29 is separated from the step 30;
The head 25a is appropriately separated from the draining edge 22a,
The content liquid flowing out is guided in an appropriate direction by the draining edge 22a. 32 is plug body 2
Content liquid outflow gap between 5 and spout member 22, 3
Reference numeral 3 denotes a retaining protrusion provided at the lower end of the plug body 25.

On the outer periphery of the shoulder member 17 is a cap 3 which also serves as a cap.
4 is removably screwed 35, and is fixed to one side of the shoulder member 17 and one side of the bottom 12.
6 and 37, each end of a handheld band 38 is hooked so that its length can be adjusted by a band feeder 38a. A band pin 36 is also provided on the other side of the shoulder member 17, so that the end of the band 38 hooked to the band pin 37 on the bottom 12 can be replaced. At the end of each tip 14, 34,
A decorative protection board 39 made of rubber is elastically fitted 40.

The inward annular protruding edges 8a and 8b of each heat insulating member 8 shown in FIGS. 3 and 4 located between the joint edges 10 and 11 of the inner container mouth 3a are connected to the inner periphery of the inner container mouth 3a. It can be made to protrude to form a stepped portion to which the O-ring 24 of the spout member 22 is pressed, or a spout opening to which the plug directly comes into contact and separates depending on the plug structure. FIG. 5 shows the parts of the spout member 22 and the stopper body in which a seal packing 41 having a U-shaped cross section is attached to the ridge 8b of the heat insulating member 8 which has a T-shaped cross section, and is brought into pressure contact with the ridge 8b. This eliminates the need for seal packing.

In FIG. 6, a heat insulating joint 9 formed by a cylindrical heat insulating member 42 is provided at the mouth 3a of the inner container 3, and is connected to the mouth 4a of the outer container. The heat insulating member 42 has a screw 4 screwing the plug 25 on its inner periphery.
3 is formed, and a screw 2 on the outer periphery of the opening 4a of the outer container 4
The supply/discharge port 44 is opened and closed between the liquid supply/discharge port 44 of the spout member 22 screwed onto the spout member 4 and the O-ring 29 on the outer periphery of the stopper 25. 4
Reference numeral 5 denotes a liquid outflow path vertically carved on the circumferential surface of the plug body 25. 46 is a seal packing between the spout member 22 and the mouth of the container body 2.

In FIG. 7, a spout 47 is integrally formed at the upper end of the mouth 4a of the outer container 4, and an engaging portion 48 for preventing rotation of the shoulder member 17 is formed between the outer container 4 and the shoulder member 17. This embodiment differs from the embodiment shown in FIG. 6 in that the embodiment shown in FIG.

According to this invention, in a metal vacuum double-insulated container in which a vacuum insulation space is created between the metal inner container and the outer container, and a stopper is inserted into the mouth, the space below the rim of the mouth of the inner container is In addition, at the position where the stopper is inserted, there is a heat insulating joint that connects the mouth and the body with a heat insulating member, so the heat insulating member serving as the heat insulating joint connects the rim side of the mouth of the inner container and the body. At the same time, it cuts off the heat conduction by the metal member from the body side of the mouth of the inner container to the mouth side, which is the direct heat radiation part to the outside, and the plug body inserted into this heat insulation joint. As a result, the heat received from the liquid in the metal inner container can be sufficiently prevented from escaping to the outer container, improving heat retention and cold retention. Moreover, the heat insulation joints connected by the heat insulation members of the inner container are formed only on the metal inner container covered by the metal outer container, and no external force is directly applied to that part, so the inner and outer parts of the vacuum insulation container body are connected to each other. Since both containers are made of metal, there is no loss in impact resistance or durability.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment with half of it cut away, Fig. 2 is an enlarged sectional view of the main part, and Figs.
The figures are sectional views of essential parts showing different modifications, and FIGS. 6 and 7 are sectional views of essential parts showing other embodiments, respectively. {1... Vacuum insulation space, 3... Inner container, 4...
Outer container} 2... Insulator body, 3a, 4a... Mouth part,
5... Joint portion, 8, 42... Annular heat insulating member, 8
a, 8b, 8c... Annular ridge, 9... Heat insulation joint, 17... Shoulder member, 22... Spout member, 25
... Plug body, 24, 43 ... Screw, 53 ... Shoulder member attachment part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a metal vacuum double-insulated container in which a vacuum insulation space is provided between the metal inner container and the outer container, and a stopper is inserted into the mouth, the mouth of the inner container 1. A metal vacuum double-insulated container, characterized in that a heat insulating joint connecting the mouth and the body with a heat insulating member is provided below the mouth edge of the container and at a position where the stopper is inserted. (2) The metal vacuum double-insulated container according to claim 1, wherein the inner container and the outer container are made of stainless steel. (3) The metal vacuum according to claim 2 of the utility model registration claim, in which the heat insulating member is made of ceramic, pottery, synthetic resin, glass, or other material that has lower thermal conductivity than stainless steel and is non-porous. Double insulated container. (4) The metal vacuum double-insulated container according to claim 3, wherein the heat insulating member is connected to each joint with the inner container by brazing. (5) The heat insulating member is the metal vacuum double type heat insulating material as set forth in claim 1 of the utility model registration claim, wherein the heat insulating member is located at the mouth of the inner container and forms a liquid injection opening that is opened and closed by moving the stopper into and out of contact with each other. container. (6) The metal vacuum double-type heat-insulating container according to claim 1, wherein the heat-insulating member is located at the mouth of the inner container and forms a thread into which the stopper is screwed.