| abstract |
The present invention relates to a pressurized gas charging method of charging a gas into the interior of a gas generator which has a pressurized gas chamber having an outer shell formed by a pressurized gas chamber housing, a gas generating chamber having an outer shell formed by a gas generating chamber housing, being connected to an opening portion at one end of the pressurized gas chamber, a diffuser portion having a gas discharge port, being connected to an opening portion at the other end of the pressurized gas chamber, and no charging hole, for charging a pressurized gas, provided in the pressurized gas chamber housing before charging the pressurized gas, comprising: a first step of connecting one of the gas generating chamber housing and the diffuser portion to the opening portion at one end of the pressurized gas chamber housing, which has opening portions at both ends, thereby sealing the opening portion; a second step of disposing the gas generating chamber housing or the diffuser portion, that is not connected in the first step, in the vicinity of the opening portion at the other end of the pressurized gas chamber housing so as to form a gap serving as a gas charging hole; a third step of charging pressurized gas through the gap up to a predetermined pressure; and a fourth step of connecting the unconnected gas generating chamber housing or diffuser portion to the pressurized gas chamber housing to seal the gap. |