Metal holder with electrode pin, method of manufacturing the metal holder, and gas generator

Abstract

The present invention provides a method for inexpensively manufacturing a metal holder with an electrode pin suitable for use as a gas generator and having excellent sealing properties. Even if the gas generator is operated at high temperature, the electrode pin is less likely to fly out. The present invention provides a metal holder with an electrode pin, a manufacturing method thereof, and a gas generator having the metal holder with an electrode pin. The metal holder with an electrode pin is characterized by having A metal holder (5) and two or more electrode pins (4) for conducting electricity, the head portion (4a) of each of the electrode pins (4) having a diameter larger than the terminal portion (4b) of the electrode pin (4) with a diameter of Each electrode pin (4) is fixed in the hole (23) via the plastic member (6), and has a reduced diameter portion (23a) in a part of the hole (23).

Description

technical field [0001] The present invention relates to a metal holder with electrode pins, its manufacturing method, and a gas generator provided with the holder, and in particular to a gas generator suitable for operating vehicle occupant restraint devices such as seat belt pretensioners of automobiles . Background technique [0002] A seat belt pretensioner is known as one type of safety device for protecting occupants from impact when an automobile collides. The seat belt pretensioner is activated by a large amount of high-temperature and high-pressure gas discharged from the gas generator, thereby protecting the occupant. This gas generator has an ignition mechanism and a gas generator, and by operating the ignition mechanism at the time of collision, the gas generator is ignited and combusted to rapidly generate a large amount of gas. [0003] As an example of a conventional gas generator, there are known Figure 10 The gas generator etc. shown (for example, refer pa...

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Problems solved by technology

[0009] But when Figure 10 In the gas generator 101 of the present invention, when a fire occurs in a high-temperature state such as a vehicle fire, the resin body is softened by the heat and the gas generating agent inside spontaneously ignites, and there is a possibility that the electrode pins may fly out.

[0010] In addition, in the gas generator 101, there are many manufacturing steps, and the cost reduction is limited.

In addition, in the case of using a gas generating agent with poor moisture absorption resistance, conventional plastic ignition devices may have insufficient airtightness, so expensive components such as vacuum seals (preferably glass vacuum seals with high airtightness) must be used.

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