| 摘要 |
A gas generator for an air bag comprises a housing (3) forming an outer shell container and accommodating two or more ignition means (12a,12b) to ignite on an impact and two or more gas generating means (9a,9b) which are to be independently ignited and burnt by the ignition means (12a,12b) so as to generate a combustion gas for inflating an air bag, and a plurality of gas discharge ports (26a,26b) which are formed in the housing (3), wherein the gas discharge ports (26a,26b) are closed by sealing means (27) for maintaining an internal pressure of the housing to the given pressure, wherein a first combustion chamber (5a) which starts burning first and a second combustion chamber (5b) which starts burning later are partitioned by a wall (7) having a communication hole (10), the communication hole (10) is provided with flame-transfer-preventing means (11) so that the combustion in the second combustion chamber (5b) should not be caused by the combustion in the first combustion chamber (5a). |
