| 摘要 |
The present invention provides a filterless gas generator, including a housing having a closure shell, a diffuser and a flange portion, an inner tube member accommodating an igniter coaxially with the central axis of the housing, an opening end of the inner tube member located in a bottom plate of the closure shell and a ventilating portion formed at the opening end, the inner tube member fixed to an igniter attaching portion, being a cylindrical portion projecting inwardly in the closure shell, and a passage being formed between the inner tube member and the igniter attaching portion to reach the ventilating portion, one end opening of a outer circumference cylindrical member provided in the combustion chamber being located at the bottom plate of the closure shell, the annular porous member disposed and defining a space above the combustion chamber, the space communicating to a gas discharge path between the outer circumference cylindrical member and a side surface of the diffuser shell through a communicating portion.
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