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Double-stage gas generator for air bag protection and control method

A gas generator, two-stage technology, which is applied in vehicle safety arrangement, pedestrian/passenger safety arrangement, transportation and packaging, etc. It can solve the problems of gas not being able to circulate and effectively realize the generator inflation mode, etc., to reduce residue The effect of content, light weight and small volume

Active Publication Date: 2020-02-07
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art most relevant to the present invention is US20140261729A1 patent, which provides a bipolar gas generator, two generators share a filter chamber, but the gas cannot flow between the two generators, nor can it Effective realization of two inflation modes of the generator

Method used

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  • Double-stage gas generator for air bag protection and control method
  • Double-stage gas generator for air bag protection and control method
  • Double-stage gas generator for air bag protection and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Two-stage gas generator for airbag protection

[0032] Such as figure 1 As shown, the double-stage gas generator of the present invention includes a first gas generator 1 and a second gas generator 2, the first gas generator 1 and the second gas generator 2 are located inside the filter chamber 3, and the filter chamber is provided with Gas outlet; the first gas generator 2 is provided with a first electric igniter 101, and the second gas generator 2 is provided with a second electric igniter 201 and a striker igniter, and the striker igniter is provided by the second A gas generator 1 generates gas drive.

[0033] Such as figure 1 , figure 2 As shown, the structure of the second gas generator is that a generator partition 210 is arranged inside the second gas generator housing, and the second gas generator housing is composed of an upper housing 213 and a lower housing 211 . The second gas generator housing is isolated into a first gas generator chamber and a seco...

Embodiment 2

[0041] Control method of two-stage gas generator

[0042] Automatic mode:

[0043] In the case of rapid free fall or the driver loses consciousness, the driver has no time to open the airbag, and at the moment of falling to the ground, the sensor determines the opening timing, connects the ignition signal, and triggers the first electric igniter 101 and the second electric igniter 201 at the same time , the first gas generator 1 and the second gas generator 2 generate gas, and quickly inflate the airbag through the gas outlet of the filter chamber 3 .

[0044] Such as figure 1 , Figure 6 As shown, the first electric igniter 101 is triggered, and the strong igniter in the first strong igniter tube 102 ignites the first large gas-producing tablet 103, and the generated gas passes through the air hole 104 on the first gas generator housing (firstly break through the aluminum foil covering the pores) into the filter chamber 3. When the gas generated by the first gas generator...

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Abstract

The invention relates to a double-stage gas generator for air bag protection and a control method. The double-stage gas generator comprises a first gas generator and a second gas generator, wherein the first gas generator and the second gas generator are located on the inner side of a filter chamber, and a gas outlet is formed in the filter chamber; and the first gas generator is provided with a first electric igniter, the second gas generator is provided with a second electric igniter and a firing pin type igniter, and the firing pin type igniter is driven by gas produced by the first gas generator. Two inflation modes of the generator can be effectively realized.

Description

technical field [0001] The invention relates to a two-stage gas generator for air bag protection and a control method. Background technique [0002] Airbag protection is conducive to improving the safety of helicopters, improving the survivability of pilots, and solving the practical problem of helicopter crashes. There are generally two modes of helicopter falling, one is free fall without power, and the other is slow landing in the case of stall. According to the two situations, there should be two airbag opening modes, which are more conducive to the safety of the driver. When the airbag is opened, the gas generator instantly inflates the airbag. [0003] The prior art most relevant to the present invention is US20140261729A1 patent, which provides a bipolar gas generator, two generators share a filter chamber, but the gas cannot flow between the two generators, nor can it Effectively implements two inflation modes of the generator. Contents of the invention [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/264B60R21/263B60R21/26
CPCB60R21/26B60R21/263B60R21/2644B60R2021/26011B60R2021/26029B60R2021/2633
Inventor 毛龙杨威屈纯张文龙陈淑娟牛同锋姚俊舒君玲余维维
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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