| 摘要 |
The present invention provides a gas generator capable of easily and unfailingly closing a gas discharging port formed in a housing. The invention provides a gas generator for an air bag in which an amount of accommodated gas generating agent can be varied and the gas generating agent can be ignited and burnt unfailingly even by the ignition means having normal output. The invention provides a gas generator which has sealing structures as little as possible and in addition to a simple structure and can be manufactured easily, and in that a activation performance and activation timing can be adjusted at a multiple stage. The invention provides a gas generator for an air bag comprising, in a housing provided at its peripheral wall with a plurality of gas discharging ports, an ignition means to be actuated upon the impact, and a gas generating means to be ignited and burnt by the ignition means, wherein the gas discharging ports are arranged in the axial direction of the housing to form a gas discharging port line, two to six gas discharging port lines are arranged close to each other in the circumferential direction of the housing to form a gas discharging port group, the gas discharging port groups are arranged in the circumferential direction of the housing at predetermined intervals. The invention provides a gas generator for an air bag comprising, in a cylindrical housing which is longer in the axial direction than in the radial direction, an ignition means to be actuated upon the impact, and a gas generating means to be ignited and burnt by the ignition means, wherein a combustion chamber for accommodating the gas generating means and a filter means accommodating chamber for accommodating a filter means are formed in the housing adjacent to each other in the axial direction so that these cambers communicate with each other, the combustion chamber accommodating the gas generating means is separated from the filter means accommodating chamber by a partitioning member having a through-hole. The invention provides a gas generator for an air bag comprising, in a cylindrical housing which is longer in the axial direction than in the radial direction, two ignition means to be actuated upon the impact, and two combustion chambers accommodating gas generating means to be ignited and burnt by the ignition means, wherein the combustion chambers are provided on the opposite ends in the housing, a filter means accommodating chamber for accommodating a filter means is provided between the combustion chambers, either of the combustion chambers communicates with the filter means accommodating chamber. |
