PURPOSE: To make it possible to retain liquid sealing materials in a long period so as to enhance the reliability of a battery and elongate its life, by providing a channel about the holed portion of an electric jar valve body.
CONSTITUTION: A channel 11 is provided about the holed portion 6 of an electric jar, the portion which rubber or synthetic resin sheets 8 abut. In either case when the inner pressure of a battery rises and gases issue from inside thereof to the outside, or a case when the pressure falls and hence it is reduced therein, therefore, a certain amount of liquid sealing materials are always retained in the channel provided about the holed portion of the electric jar; gastight performance in between the holed portion of the electric jar and its flat valve body can be maintained by means of these sealing materials. The reliability of the safety valve of the battery can thus be enhanced and elongation of the battery can be realized.
NAKAJIMA TAKASHI
ONODA YUKIHIRO
| JPS62147652A | 1987-07-01 | |||
| JPS5321699U | 1978-02-23 | |||
| JP1063067B |