| 摘要 |
The present invention provides an inflator for an air bag which concentrates the discharging direction of a gas in one direction toward an air bag and does not allow jumping of the inflator even due to malfunction thereof before installation to a vehicle, and which further allows easy and reliable connection of the air bag and the inflator. An inflator for an air bag is constituted to include a gas discharge portion 20 provided with an annular portion with plural first gas discharge ports 22 formed therein, and a diffuser portion 40 removably mounted only in the vicinity of the first gas discharge ports, the diffuser member 40 is provided with a passage forming portion 50, and one or two or more second gas discharge ports 45 for discharging a gas of a passage 46 in the radial direction of an inflator housing are formed unevenly on one portion of the passage forming portion in the circumferential direction thereof.
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