The invention relates to the technical field of gas generators and relates to a pyrotechnic gas generator for an airbag. A filter adopts a design mode with the same height as an upper shell; a lower shell is of a double-cup-body structure; the lower shell is provided with a first cup body and a second cup body; the filter is arranged in the first cup body; the upper shell is connected to an opening of the first cup body of the lower shell; an igniter base is arranged on the bottom surface of the lower shell; an igniter is arranged in the igniter base; an ignition shell is connected to the igniter base; the ignition shell is provided with at least one ignition hole; and a mesoporous columnar gas production initiation power sheet of which the major axis radius-to-minor axis radius ratio is larger than 1 is arranged in a gas production initiation power chamber. Compared with the prior art, the pyrotechnic gas generator improves the filter efficiency of the filter and meanwhile, reduces the output slope of the initial pressure of the pyrotechnic gas generator.
本发明涉及气体发生器技术领域,具体地说是一种安全气囊用烟火式气体发生器,过滤器采用与上壳体等高的设计方式,下壳体采用双杯体结构,下壳体设有第一杯体和第二杯体,第一杯体内置有过滤器,上壳体连接在下壳体的第一杯体的开口处,下壳体底面置有点火器座,点火器座内置有点火器,点火壳体连接在点火器座上,所述点火壳体设有至少一个以上点火孔,产气药室内装有长轴短轴半径比大于1的中孔柱状产气药片。本发明同现有技术相比,提高了过滤器的过滤效率,同时降低了烟火式气体发生器的初期压力的输出斜率。
Pyrotechnic gas generator for airbag
安全气囊用烟火式气体发生器
2020-08-11
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Low-cost high-output columnar pyrotechnic airbag gas generator
European Patent Office | 2020
|Analytical Modelling of Pyrotechnic Airbag Inflators
British Library Conference Proceedings | 1993
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