| abstract |
PROBLEM TO BE SOLVED: To provide a gas generator for an air bag having a simple structure. An inner cylinder member 504 is disposed in a housing, and a second combustion chamber 560 filled with a second gas generating agent 522 is provided inside the inner cylinder member 504, and the inner cylinder member 504 is provided. A first combustion chamber 550 filled with a first gas generating agent is provided outside, and the first combustion chamber 550 and the second combustion chamber 560 are communicated with the peripheral wall of the inner cylinder member 504. A notch 512 serving as an opening is formed, the notch 521 is opened by the combustion of the second gas generating agent 522, and the first combustion chamber 550 and the second combustion chamber 560 are communicated. [Selection] FIG. |