Electric igniter for automobile air bag restraint system

Abstract

The invention provides an electric igniter for an automobile air bag restraint system, which comprises an annular electrode, insulative glass, a single electrode, an igniter wire, a pipe shell, ignition powder, a plastic sleeve and a powder pipe, wherein the insulative glass is arranged in the middle of the annular electrode, the igniter wire is arranged on the annular electrode, two ends of the pipe shell are respectively connected with the annular electrode, the pipe shell, the annular electrode and the insulative glass form a space, the ignition powder is arranged in the space, the plasticsleeve is arranged outside the pipe shell, and the powder pipe is arranged in the space and is connected with the annular electrode. In the electric igniter for the automobile air bag restraint system, provided by the invention, due to the insulation of the pipe shell, when a product is welded for packaging, relative high welding energy can be adopted, the welding connection between the pipe shell and an electrode base is ensured to be firm, welding light beam or energy can be ensured to be effectively isolated with the powders inside the powder pipe, and thus, the probability of false explosion generated due to heated powder is reduced and the safety of a production process is improved.

Description

Automobile airbag electric igniter technical field The invention relates to an automobile part, in particular to an electric ignition device for an automobile safety airbag. Background technique There are two types of electric igniters currently on the market, one with a plastic structure and the other with a metal structure. Due to its low strength, the plastic structure is no longer suitable for new airbag gas generator products. Therefore, although its cost is low, its application range is too narrow and it does not have market competitiveness. In addition to high strength, metal electric igniters are superior to plastic products in performance, and can meet the requirements of all automotive airbag gas generators. However, all the connecting parts of the metal electric igniter are made of metal materials, so many welding methods are used in the sealing of the product. Because welding will generate high temperature, and the ignition powder inside is easy to explode, ...

AI Technical Summary

Problems solved by technology

However, all the connecting parts of the metal electric igniter are made of metal materials, so many welding methods are used in the sealing of the product. Because welding will generate high temperature, and the ignition powder inside is easy to explode, the welding time Safety has become an important control point in production, and a large amount of money needs to be invested to transform production equipment

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