A special combustion chamber for a gas generator
A technology of gas generators and combustion chambers, which is applied to vehicle components, pedestrian/occupant safety arrangements, vehicle safety arrangements, etc. It can solve problems such as poor speed-up effect and failure to break the burst membrane, and achieve simple structure and prevent damage , the effect of improving safety
Active Publication Date: 2021-09-24
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 mainly aims at the problem that although the funnel-shaped combustion chamber in the prior art has the effect of increasing the gas flow velocity at the nozzle, its speed-up effect is not good, and the bursting membrane may not be broken, and it provides a method for increasing the gas flow velocity. A special combustion chamber for a gas generator with a good speed effect and easy to break the bursting membrane
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Embodiment 1
[0024] Such as figure 1 and 6As shown, a special combustion chamber for a gas generator includes a diffuser 8 and a gas storage pipe 11. Gas is stored in the gas storage pipe 11. One end of the diffuser 8 is connected to the gas storage pipe 11, and the inner edge of the diffuser 8 is far away from the gas storage pipe 11. Accelerated combustion chamber 1, medicine cup and ignition tube 6 are arranged in sequence in the direction, medicine cup is made of aluminum, medicine cup cover 7 is arranged on one side of medicine cup, medicine cup is arranged in installation pipe 29 through second supporting shell 2, It is convenient for the installation of the medicine cup, and it is convenient for installation and production. The ignition tube 6 is a pyrotechnic component that can quickly ignite the explosive powder 3 triggered by an electric signal. The ignition tube 6 is arranged in the diffuser 8 through the first support shell 5, which is convenient for ignition For the installat...
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The invention relates to the technical field of gas generators, in particular to a special combustion chamber for gas generators. A special combustion chamber for a gas generator, including a diffuser and a gas storage pipe. One end of the diffuser is connected to the gas storage pipe. An accelerating combustion chamber, a drug cup and an ignition tube are arranged in the diffuser along the direction away from the gas storage pipe. The propellant that can be ignited by the ignition tube is provided. The accelerated combustion chamber includes an installation tube, a contraction tube and an expansion tube arranged in sequence. The medicine cup is arranged in the installation tube. The connection between the contraction tube and the expansion tube is a narrow throat. An exhaust port is provided in the circumferential direction, a blast hole is provided at the end of the expansion tube close to the gas storage pipe, a vent hole is provided on the diffuser near the contraction tube along the circumferential direction, and a blast port is provided at the end of the diffuser near the gas storage tube. burst membrane. The invention has a good effect on increasing the speed of the gas flow, and is relatively easy to break the bursting membrane.
Description
technical field [0001] The invention relates to the technical field of gas generators, in particular to a special combustion chamber for gas generators. Background technique [0002] The airbag is a very important safety device on the car. When an accident occurs in the car, it can effectively reduce the damage to the human body of the accident, thereby protecting the lives of the driver and passengers. [0003] The airbag is mainly composed of a gas generator, a combustion chamber, a filter / filter, a propagating agent / expanding agent, an exhaust port, an air storage tube and other components. Gas Generator: A component that generates and releases gas in an automotive airbag system. Combustion chamber: The cavity in the gas generator that contains the transfer charge. Filter / filter: Filters the generated gas, retains solid residues in it, and has a certain cooling effect on high-temperature gases; usually composed of metal materials. Expansion powder / flame expansion powde...
Claims
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IPC IPC(8): B60R21/264
CPCB60R21/264B60R21/2644
Inventor 刘文成
Owner 均胜汽车安全系统(湖州)有限公司