| 摘要 |
The present invention provides a gas generator for a restraining device, including a housing formed by joining and integrating a diffuser shell having a gas discharge port and a closure shell, a gas generating agent, an igniter and a cylindrical filter, accommodated inside the housing, the housing having a top plate, a circumferential wall surface and a bottom plate, a plurality of protruding portions concaved inwardly and formed with a distance from each other on at least either of an upper annular corner portion located at a boundary portion between the top plate and the circumferential wall surface and a lower annular corner portion located at a boundary portion between the bottom plate and the circumferential wall surface, part of the cylindrical filter being supported and fixed by the plurality of protruding portions, and a gap being provided between an outer circumferential surface of the cylindrical filter and the gas discharge hole.
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