JPH0159544U

JPH0159544U -

Info

Publication number: JPH0159544U
Application number: JP15431187U
Authority: JP
Priority date: 1987-10-08
Filing date: 1987-10-08
Publication date: 1989-04-14

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の第１実施例を示す
もので、第１図は金属製魔法瓶の半断面正面図、
第２図は排気孔と蓋部材の密着状態を示す一部拡
大断面図、第３図は製造工程の一部を示す拡大断
面図、第４図は本考案の第２実施例を示す排気孔
と蓋部材の密着状態を示す拡大断面図、第５図は
従来の金属製魔法瓶の半断面正面図、第６図は従
来の排気孔と蓋部材の密着状態を示す一部拡大断
面図である。１０……金属製魔法瓶、１１……外筒、１２，
２１……胴部材、１３，２５……底部材、１４…
…内筒、１５……空間、１６，２２……排気孔、
１７，２３……平坦部、１８，２４……周壁部、
１９，２６……蓋部材。 1 to 3 show a first embodiment of the present invention, and FIG. 1 is a half-sectional front view of a metal thermos flask;
Fig. 2 is a partially enlarged sectional view showing the close contact between the exhaust hole and the lid member, Fig. 3 is an enlarged sectional view showing part of the manufacturing process, and Fig. 4 is an exhaust hole showing the second embodiment of the present invention. FIG. 5 is a half-sectional front view of a conventional metal thermos flask, and FIG. 6 is a partially enlarged cross-sectional view showing a conventional exhaust hole and a lid member in close contact with each other. . 10...Metal thermos flask, 11...Outer cylinder, 12,
21... Trunk member, 13, 25... Bottom member, 14...
...Inner cylinder, 15... Space, 16, 22... Exhaust hole,
17, 23... Flat part, 18, 24... Peripheral wall part,
19, 26...Lid member.

Claims

[Scope of utility model registration request]

A metal outer cylinder and an inner cylinder are joined together at the mouth with a space provided in the body and the bottom, and the air in the space is sucked and exhausted through an exhaust hole provided at the bottom of the outer cylinder to create a vacuum.
In the metal thermos flask in which the exhaust hole is sealed with a lid member, the outer cylinder has a body member having an open bottom and a peripheral wall portion on the outer periphery that is joined to the bottom opening of the body member by welding or the like. 1. A metal thermos flask comprising a bottom member having an exhaust hole in the center thereof, and the exhaust hole is sealed with a lid member having a slightly smaller diameter than the peripheral wall of the bottom member.