Title:
SEALING STRUCTURE OF BATTERY
Document Type and Number:
Japanese Patent JP3074471
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sealing structure of a battery that has high sealing performance for a battery having an explosion-proof function and also can contribute toward effecting high efficiency of the battery assembly operation.
SOLUTION: A layered body is composed of three members: a cap member 3, a PTC element 4, and a safety valve 5 provided with a rupturing portion that has the same outside diameter as the cap member 3 and is to be ruptured with the inner pressure increase in a battery. The layered body is mounted by fitting it on to the upper surface of stepped portion of a gasket 8 made of a soft plastic with its peripheral edge contacted tightly to the inner surface of the gasket 8. Then, the gasket 8 is inserted into an opening of an armored battery container 2; by pressing on a side peripheral surface 2b of the armored battery container 2 where the side edges of the cap member 3 and the safety valve 5 are located and at the same time by bending and pressing the fringe of the opening of the armored battery container 2 together with the gasket 8 on to the upper surface of the cap member 3 toward the center of the battery, the gasket 8 is led in between the battery container 2 and the joining surface of the side edges of the cap member 3, the PTC element 4 and the safety valve 5, and finally sealed.
Inventors:
Katsumi Tanida
Application Number:
JP8328497A
Publication Date:
August 07, 2000
Filing Date:
March 17, 1997
Export Citation:
Assignee:
Hosen Co., Ltd.
Keihin Rika Kogyo Co., Ltd.
Keihin Rika Kogyo Co., Ltd.
International Classes:
H01M2/08; H01M2/12; H01M2/34; (IPC1-7): H01M2/12; H01M2/08; H01M2/34
Domestic Patent References:
| JP7201309A | ||||
| JP6196139A | ||||
| JP10233199A |
Attorney, Agent or Firm:
Toshiro Tanabe