| 摘要 |
A gas generator includes, a housing comprising circumferential wall plates of a diffuser shell and a closure shell, an ignition device chamber, a combustion chamber surrounding the ignition device chamber and containing a gas generating agent, an annular or flat-plate filter disposed facing the top plate and spaced from the circumferential wall plate, a first support including a disk-shaped portion abutting against and supporting an upper surface of the filter, including communication holes only at a section in contact with the filter, a second support including an annular flat portion abutting against and supporting a lower surface of the filter and cylindrical wall portion fixed to the housing. A gap is formed between the top plate of the housing and the circumferential wall plate and the first support member, when a pressure inside the combustion chamber increases due to combustion and the top plate is deformed.
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