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Igniter for safety air bag

A technology of safety airbags and igniters, which is applied in the direction of combustion ignition, incandescent ignition, vehicle safety arrangement, etc. It can solve the problems of high ignition energy, long action time, poor reliability and anti-interference ability, etc., and achieve low detonation energy and effective Short time and good ignition performance

Inactive Publication Date: 2007-08-22
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of high ignition energy, long action time, poor reliability and anti-interference ability of the igniter with thermal bridge wire as the ignition element in the prior art, the invention provides an igniter for airbag

Method used

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  • Igniter for safety air bag
  • Igniter for safety air bag

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Embodiment

[0018] Among Fig. 1~Fig. 3, the safety air bag igniter of the present invention comprises electrode plug 2, medicine box 4, metal casing 5, ignition powder 6 and semiconductor bridge 9, and the profile of electrode plug 2 is a stepped cylindrical shape, The electrode plug 2 is composed of two core electrodes (1, 11) and an antistatic material plug body. The antistatic material is a polymer material, and the core electrode (1, 11) forms an integral electrode plug 2 through injection molding. The semiconductor bridge 9 is a semiconductor chip in which a polysilicon layer 13 , a single crystal silicon layer 14 and an insulating dielectric material layer 15 are closely laminated, wherein the insulating dielectric material layer 15 is disposed between the polycrystalline silicon layer 13 and the single crystal silicon layer 14 . A groove is arranged between the two core electrodes (1, 11) on the top of the electrode plug 2, the center of the groove coincides with the central axis of...

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PUM

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Abstract

The present invention provides one kind of igniter for safety air bag. The igniter for safety air bag includes an electrode plug and a semiconductor bridge, which is fixed inside the notch of the electrode plug and serves as the firing element. The core electrode of the semiconductor bridge and that of the electrode plug are connected through a gold wire, the semiconductor bridge has dipped priming, and the electrode plug has one fixed explosive box with contained igniting powder and metal casing fixed to the electrode plug. The igniter for safety air bag has small size, good igniting performance, low detonating energy, short acting time and low cost, and is suitable for use for various kinds of electrically firing safety air bag system.

Description

technical field [0001] The invention belongs to the field of on-vehicle devices or accessories for protecting or preventing passengers or pedestrians from being injured when accidents or other traffic dangers occur, and in particular relates to an igniter for a safety airbag of an automobile. Background technique [0002] At present, the ignition element of the ignition device in the ignition device of the automobile safety airbag is mainly a thermal bridge wire. When a current of 3-5A is applied to the thermal bridge wire and heated for a few milliseconds, the temperature of the bridge wire can rise to about 900K, and the primer pressed tightly on the bridge will be heated and detonated. [0003] The patent application document (application number: CN200320109758.6) entitled "Electric Ignition Tube for Airbag Gas Generator" discloses an electric ignition tube, which is an igniter with a thermal bridge wire as an ignition element. The ignition critical energy is high (tens ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/26F23Q7/02F42D1/045B60R21/264
Inventor 胡红革杨黎明费三国杜连明
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS