Gas generator, and method of assembling two-stage gas generator

Abstract

The present invention provides a gas generator, which includes an igniter, a housing, and a spacer member. The housing is a metal housing that accommodates the igniter and forms a gas discharge port. In the combustion chamber where the solid gas generating agent is combusted, the solid gas generating agent is filled in a combustible position, and the partition member exists between the gas generating agent and the gas generating agent arranged in the combustion chamber inside the casing. Between the bottom surface and the side surface of the combustion chamber, there is a partition wall formed of a predetermined resin material so as to contact the gas generating agent to impart a predetermined holding force to the gas generating agent. With such a structure, pulverization of the gas generating agent filled in the casing of the gas generator and generation of vibration noise can be suppressed.

Description

technical field [0001] The present invention relates to a gas generator that burns a gas generating agent by the operation of an igniter to generate combustion gas. Background technique [0002] In a gas generator that generates combustion gas by burning the gas generating agent filled in the combustion chamber by the operation of the igniter, if the filled gas generating agent does not burn as expected, it is difficult to generate combustion gas as designed. Here, in order to withstand the pressure generated by the combustion of a gas generating agent, the casing of a gas generator is usually made of metal. However, when the gas generating agent is filled in the metal casing, if the gas generating agent moves unnecessarily inside the casing, the gas generating agent may be pulverized by contact with the casing. Since the gas generant surface area of ​​the gas generant after pulverization is increased compared with that before pulverization, the combustion characteristics o...

AI Technical Summary

Problems solved by technology

However, when the gas generating agent is filled in a metal case, if the gas generating agent moves unnecessarily in the case, the gas generating agent may be pulverized by contact with the case.

Compared with before pulverization, the gas generant surface area of ​​the pulverized gas generant increases, so the combustion characteristics of the gas generant change, and the combustion of the gas generant as designed may not be obtained

In addition, such unnecessary movement of the gas generating agent may also be a cause of sound during vibration

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