JPH0243320Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This idea relates to the structure of the mouth of various thermal containers such as thermos flasks and electric water kettles.

[Prior art and its problems]

In the mouth structures of the various heat-retaining containers described above, if the mouth of the bottle body is wide-mouthed, heat loss from the stopper increases in proportion to this, and the heat retention of the container deteriorates. Moreover, the plug body becomes bulky, making it inconvenient to handle. However, if the mouth of the bottle body is made narrow in consideration of the heat retention, although the heat retention and the operability of the stopper are improved, the inside of the bottle body cannot be easily cleaned.
It becomes inconvenient to add solid items such as ice cream. However, conventionally, the mouth structure of this type of heat-retaining container has had problems that are mutually exclusive in each of the above cases.

[Purpose of invention]

This idea was made in view of the above circumstances,
It is an object of the present invention to provide a mouth structure for a heat-insulating container that has excellent heat-retaining properties and allows easy cleaning of the inside of the bottle body.

[Structure of the idea]

The opening structure of the heat-insulating container of this invention is such that a through hole is provided in the stopper that closes the mouth of the bottle body to form an outer stopper, and an inner stopper that closes the through hole is detachably attached to the outer stopper. In addition, at least the inside of the outer plug body is filled with a heat insulating material.

【Example】

FIGS. 1 to 3 show an example of the mouth structure of the heat-insulating container of this invention, and are an example applied to a heat-insulating container having an air port mechanism in the mouth. In the figure, reference numeral 1 indicates a bottle body having a vacuum double structure made of metal, and the bottle body 1 has a substantially cylindrical shape with a bottom and a wide opening 1a. This bottle body 1 is housed inside the outer cylinder 2 of the container,
A shoulder patch 3 is attached to the mouth portion 1a. This bottle body 1 is assembled by the shoulder gasket 3 being pressed downward by the inwardly bulging annular fixing flange 4a of the lower mouth member 4 which is tightened into the mouth of the outer cylinder 2. , the mouth portion 1a and the outer cylinder 2
It is fixed in the outer cylinder 2 in a liquid-tight manner. An outer stopper 5 is inserted into the mouth portion 1a of the bottle body 1. This outer plug body 5 includes a disk-shaped top plate 6 whose outer diameter is slightly smaller than the inner diameter of the mouth portion 1a, and this top plate 6.
A cylindrical side plate 7 extending downward from the outer edge of the lower surface is integrally molded, and a disc-shaped bottom plate 8 having the same diameter as the top plate 6 is fitted into the lower end opening of the side plate 7. It is. The top plate 6 of the outer plug body 5 is provided with a water leak catch collar part 6a that extends outward for a predetermined length in a flange-like manner on the outer periphery and is bent upward at the outer periphery. It is shaped like a tray in appearance. Further, on the upper part of the side plate 7 of the outer plug body 5, there is formed a ring attachment collar part 7a which protrudes outward in an annular shape and forms a groove between it and the lower surface of the water leakage catch collar part 6a. . A seal ring 9 is attached so as to straddle the ring attachment flange 7a of the outer plug body 5. The seal ring 9 has an inner diameter approximately equal to the outer diameter of the side plate 7 of the outer plug body 5, and has a substantially U-shaped cross section with a groove opening inward.
The seal ring 9 is attached with its upper side portion fitted into the gap between the water leakage catch collar 6a and the ring attachment collar 7a of the outer plug body 5. Further, the lower side portion of the seal ring 9 straddles the ring attachment flange 7a and is gradually inclined downward toward the outer peripheral surface of the side plate 7. In this way, the outer stopper 5 with the seal ring 9 attached has its side plate 7 inserted into the opening 1a of the bottle body 1 through the opening of the fixing flange 4a of the lower mouth member 4, and the seal ring 9 is sealed. The lower part of the ring 9 is attached in close contact with the upper surface of the inner peripheral part of the fixing collar 4a, and the mouth part 1a is sealed liquid-tightly. Further, as shown in FIG. 1, the top plate 6 of the outer plug 5 has a hole located approximately midway between the center and the outer periphery.
An opening whose outer diameter is slightly smaller than the radius of this top plate 6 is formed. And on the bottom surface of the top plate 6,
A cylindrical inner wall 10 extending from the peripheral edge of the opening to the bottom plate 8 below is integrally molded. Furthermore, the bottom plate 8 has a lower end position of the inner wall 10.
A water supply port 11 is formed inside the inner wall 10 to communicate the inside of the bottle body 1 with the outside of the outer stopper 5.
Further, the inner wall 10 is formed to have a wide opening with a diameter slightly increased at a portion from the upper end to a predetermined depth compared to the lower portion of the inner wall 10. An inclined portion 10a whose diameter is gradually reduced downward is formed between this wide-mouthed portion and the lower portion of the inner wall 10. An inner plug 12 is inserted into the inner wall 10 to close the water supply port 11. This inner plug body 12 has a cylindrical plug portion 13 whose outer diameter is slightly smaller than the inner diameter of the inner wall 10.
A cylindrical grip portion 1 having a slightly larger diameter than the plug portion 13 is integrally formed on the upper end surface of the plug portion 13.
It consists of 4. The plug portion 13 is hollow inside, and the hollow inside is filled with a heat insulating material 15 such as styrofoam. Further, a flange-shaped stepped portion 13a is formed at the upper portion of the stopper portion 13 to form a predetermined gap between the stopper portion 13 and the lower surface of the grip portion 14. A seal ring 16 is installed in the gap between the stepped portion 13a and the grip portion 14. This seal ring 16 has an inner diameter equal to that of the plug portion 1.
3, and has a U-shaped cross section with a groove that opens upward. The inner plug body 12 has a plug portion 13 inserted into the water supply port 11 of the inner wall 10, and the seal ring 16 is in close contact with the inclined portion 10a of the inner wall 10 to liquid-tightly seal the water supply port 11. It is attached to the inner wall 10. Further, on the outer plug body 5, a water pumping pipe 17 and a ventilation pipe 18, which are pipe-shaped and provided with a check valve inside, which constitute the air pot mechanism of this heat insulating container, are respectively attached to the outer plug body 5 in the same way as the inner wall 10. It is provided so as to penetrate through and communicate with the inside of the bottle body 1. A heat insulating material 19 such as styrofoam is provided in the hollow area surrounded by the side plate 7 inside the outer plug body 5, the inner wall 10, the water pump 17, and the ventilation pipe 18.
is filled. On the other hand, the upper part of the water pumping pipe 17 is connected to the spout 21 via the spouting pipe 20, and the upper part of the ventilation pipe 18 is connected to a bellows-shaped air pipe inside the upper lid body 22 attached to the upper part of the lower mouth member 4. Connected to the bottom of the pump. In addition, code 2 in the figure
Reference numeral 3 denotes an electrode for detecting the liquid level inside the bottle body 1, and is connected to a liquid level indicator 24 provided on the outer circumference of the outer cylinder 2. However, with such a mouth structure, during normal use, water can be refilled from the water supply port 11 by simply attaching and detaching the small and lightweight inner plug body 12. My body doesn't get in the way either. In addition, the outer stopper 5 is attached to the bottle body 1.
By removing the mouth part 1a from the mouth part 1a, the mouth part 1a can be opened widely, so that the inside of the bottle body 1 can be easily and thoroughly cleaned, and furthermore, it is also easy to put solid matter into the bottle body 1. Moreover, a heat insulating material 1 is provided inside both the outer plug body 5 and the inner plug body 12.
5 and 19, the plug part has excellent heat retention. In the above embodiment, both the water pump 17 and the ventilation pipe 18 constituting the airpot mechanism are connected to the outer stopper 5.
However, the invention is not limited to this, and as shown in FIG. 4, the inner plug body 25 may have a slightly larger diameter, and the water pumping pipe 26 and the ventilation pipe 27 may be provided therein.

[Effect of the idea]

As explained above, the opening structure of the heat insulating container of this invention is such that a through hole is provided in the stopper that closes the mouth of the bottle body to form an outer stopper, and an inner stopper that closes the through hole of the outer stopper. is detachably provided, and at least the inside of the outer plug body is filled with a heat insulating material. Therefore, this opening structure has advantages such as excellent heat retention, easy cleaning of the inside of the bottle body, and easy handling of the stopper during normal water supply.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the mouth structure of the heat insulating container of this invention, where Figure 1 is a schematic side view taken in cross section, and Figure 2 is a plan view taken along the - line in Figure 1. Figure 3 is a sectional view taken along the - line in Figure 2;
FIG. 4 is a schematic cross-sectional side view showing another embodiment of this invention. DESCRIPTION OF SYMBOLS 1... Bottle body, 1a... Mouth part, 5... Outer stopper, 10... Inner wall, 11... Water supply port, 12... Inner stopper, 15... Insulating material, 19... Insulating material, 25
...Inner plug body.

Claims (1)

[Scope of Claim for Utility Model Registration] In the mouth structure of a heat-insulating container in which a wide-mouthed mouth of a bottle body is removably provided with a stopper that cools the mouth, the stopper is provided with a through hole. an outer plug body;
A heat retaining body formed of a double plug body consisting of an inner plug body which is detachably inserted into a through hole of the outer plug body, and at least the outer plug body of the double plug body has a heat insulating structure. Container mouth structure.