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Gas producer

A technology of gas generator and gas generating agent, which is applied in the direction of weapon accessories, belt tighteners, seat belts in cars, etc. It can solve the problems of electrode pins flying out, difficulty in improving the sealing performance of moisture, etc., and achieve the goal of improving sealing performance Effect

Inactive Publication Date: 2006-02-08
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case of the gas generator 101, for example, when a fire is ignited in a high-temperature state such as a vehicle fire, the resin body is softened by the heat and the gas generating agent inside is burned, and the electrode pins may fly out.
[0008] In addition, in order to integrally form the electrode pin 105d and the main body 105b, insert molding is performed for each ignition mechanism, so there is also a limit to cost reduction.
Besides, since the main body 105b made of resin is integrally formed with the electrode pin 105d, it is difficult to improve its sealing performance against moisture etc.

Method used

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Effect test

no. 1 Embodiment approach

[0039] use Figure 1 ~ Figure 4 A first embodiment of the gas generator of the present invention will be described.

[0040] exist figure 1 Among them, the gas generator 201 of this embodiment has: a cup body 3 filled with a gas generating agent 2 that generates gas through combustion, and a pair of electrode pins 4 arranged side by side. A heating element 7 is connected to the front end of the other side 21 , an ignition charge 8 is formed to cover the heating element 7 , and these ignition parts 20 are fixed on the holder 5 . A gasket 21 is arranged at the root of the other side 21 of the electrode pin 4 to prevent sparks generated by static electricity or the like from erroneously igniting the ignition powder.

[0041] In addition, the igniter holder 10 is sandwiched between the retainer 5 and the reduced-diameter portion 3b of the cup body 3, and a combustion chamber 22 where the igniter 20 and the igniter 9 are located is formed inside it. The surrounding is equipped ...

no. 2 Embodiment approach

[0055] Next, use Figure 5 ~ Figure 7 A second embodiment of the gas generator of the present invention will be described. In addition, in this embodiment, the same code|symbol is used for the part common to the gas generator 201 in the said 1st Embodiment, and detailed description is abbreviate|omitted.

[0056] exist Figure 5 ~ Figure 7 In the gas generator 202 of the present embodiment shown, the Figure 1 ~ Figure 4 The gas generator 201 of the first embodiment shown is different in that the ignition part 20 includes: a conductive part 12 for conducting electricity, a joint part 13 connecting the conductive parts, a heating element 7 that converts an electrical signal into heat, An ignition charge 8 formed around the heating element 7. The conductive part 12 of the ignition part 20 and the electrode pin 4 are fixed together by welding, riveting, soldering, brazing and other methods. Furthermore, there is another point of difference from the gas generator 201 of the fi...

no. 3 Embodiment approach

[0062] Next, use Figure 8 ~ Figure 10 A third embodiment of the gas generator of the present invention will be described. In addition, in this embodiment, the same code|symbol is used for the part common to the gas generator 201 and 202 in the said 1st Embodiment and 2nd Embodiment, and detailed description is abbreviate|omitted.

[0063] exist Figure 8 ~ Figure 10 In the gas generator 203 of the present embodiment shown, with Figure 5 ~ Figure 7 The gas generator 202 of the second embodiment shown is different in that the combustion chamber 22 provided in the primer holder 10 is provided eccentrically from the central axis of the gas generating agent 2 . At this time, the conductive part 12 of the ignition part 20 is fixed on the electrode pin 4 in a form bent by 90 degrees (refer to Figure 9 ). In this way, by using the radial space inside the gas generator 203 to configure the combustion chamber 22, the effective volume that can be filled with the gas generating age...

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PUM

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Abstract

A gas producer comprising a cup body (3) in which a gas-producing agent (2) producing a gas by burning; two or more electrode pins (4) through which electricity is conducted; an igniting portion (20) with an igniting mechanism that ignites by conduction of electricity; and a holder (5) fixing the positions of the electrode pins (4) and the igniting portion (20), and sealing up the gas-producing agent (2) by engaging with the cup body (3), wherein the gas producer is characterized in that holes (23) through which the electrode pins (4) penetrate respectively are formed in the holder (5), a plastic member (6) is provided at portion of the periphery in a radial direction of each electrode pin (4), portion or the whole of the plastic member (6) is inserted in a hole (23), and electrode pins (4) and the plastic members (6) are fixed by plastic deformation of portions of the holder (5) at which portions the plastic members (6) are inserted.

Description

technical field [0001] The present invention relates to a gas generator, particularly a gas generator suitable for operating a vehicle occupant restraint device such as a seat belt pretensioner of an automobile. Background technique [0002] A seat belt pretensioner is known as one of the safety devices for protecting passengers from the impact of a car collision. The seat belt pretensioner works by a large amount of high-temperature, high-pressure gas introduced from the gas generator to protect passengers. This gas generator is equipped with an ignition mechanism and a gas generating agent, and when the ignition mechanism is ignited at the time of collision, the gas generating agent is ignited and burned to rapidly generate a large amount of gas. [0003] As an example of conventional gas generators, there are known Figure 15 The generator shown above (for example, refer to Patent Document 1: Japanese Unexamined Patent Publication No. 2001-260815). Figure 15 The gas gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B3/12B60R22/46B60R21/264B60R21/26F42B3/103F42B3/198
CPCF42B3/103B60R2021/26029B60R22/4628F42B3/198
Inventor 久保大理栗田和昌
Owner NIPPON KAYAKU CO LTD