Bipolar gas generator for pyrotechnic safety airbag
A gas generator and airbag technology, which is applied in vehicle safety arrangements, pedestrian/passenger safety arrangements, transportation and packaging, etc., can solve the problems of insufficient filling of airbags and short pressure maintenance time, so as to achieve sufficient inflation and reduce zero The number of parts and the effect of improving safety
Pending Publication Date: 2020-12-25
均胜汽车安全系统(湖州)有限公司
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Problems solved by technology
[0005] The present invention aims to overcome the problem in the prior art that the gas pressure inside the generator is maintained for a relatively short time and cause insufficient air bag filling, and provides a bipolar gas generator for a pyrotechnic safety air bag with sufficient air bag filling
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Embodiment Construction
[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0023] Such as figure 1 In the described embodiment, a bipolar gas generator for a pyrotechnic airbag comprises an upper cover 1 and a lower cover 2, the upper cover 1 and the lower cover 2 are fixedly connected and form a drug cavity 3, the upper cover 1 The side wall is provided with several vent holes 4 and bursting discs 5, and the bursting disc 5 is fixedly connected to the side wall of the upper cover 1, and the bursting disc 5 is located in the medicine chamber 3 and completely covers several vent holes 4, and the medicine chamber 3 A first-level medicine cup 6, a second-level medicine cup 7 and a filter 8 are arranged inside. The first-level medicine cup 6 is provided with an explosive 9, and the second-level medicine cup 7 is provided with a gas-producing medicine 10. The center of the bottom of the lower cover 2 faces The medicine ca...
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The invention discloses a bipolar gas generator for a pyrotechnic safety airbag. The generator comprises an upper cover and a lower cover, the upper cover and the lower cover are fixedly connected toform an explosive cavity, the side wall of the upper cover is provided with a plurality of exhaust holes and a rupture disk, the rupture disk is located in the explosive cavity and completely covers the exhaust holes, and a first-stage explosive cup, a second-stage explosive cup and a filter are arranged in the explosive cavity. The first-stage explosive cup is internally provided with starting mix, the second-stage explosive cup is internally provided with aerogenesis explosive, the center of the bottom of the lower cover is sunken towards the interior of the explosive cavity to form a groove, the first-stage explosive cup and the second-stage explosive cup are both connected with the bottom of the groove, the bottom of the groove is connected with two ignition assemblies, one end of oneignition assembly is located in the first-stage explosive cup, and one end of the other ignition assembly is located in the second-stage explosive cup. The other ends of the ignition assemblies penetrate through the bottom of the groove, one end of the filter is connected with the upper cover, the other end of the filter is connected with the lower cover, and the rupture disk is located between the filter and the exhaust holes. The bipolar gas generator has the beneficial effect that the inflation amount of an air bag is sufficient.
Description
technical field [0001] The invention relates to the related technical field of safety airbags, in particular to a bipolar gas generator for pyrotechnic safety airbags. Background technique [0002] The gas generator is mainly used in the airbag in the car safety system. When the human body is hit, the gas generator will generate gas in an instant and fill the airbag to protect the driver's body from severe impact. [0003] The current gas generator has a large number of parts and a complex structure. The ignition tube is located at the edge of the shell. When it is ignited, a high internal pressure is generated instantly, and the slope of the pressure curve is very high. The gas pressure inside the generator maintains for a short time. It may not be possible to maintain the internal pressure, resulting in gas output and pressure lower than the expected standard, resulting in the problem of insufficient filling of the air bag; and the high cost of parts and components, result...
Claims
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IPC IPC(8): B60R21/264B60R21/26
CPCB60R21/2644B60R21/26B60R2021/26029B60R2021/26011
Inventor 张建平邸鸿儒王威梁攀
Owner 均胜汽车安全系统(湖州)有限公司