Gas generator

A technology of gas generators and gas generating agents, applied in the direction of gas generating devices, compressed gas generation, chemical instruments and methods, etc., to achieve the effects of less constraints, safe manufacturing, and cost reduction

Inactive Publication Date: 2013-11-20
NIPPON KAYAKU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacture of such a lower side shell by cutting is a factor that puts a large pressure on the manufacturing cost, so improvement is required.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0060] figure 1 It is a schematic diagram of the gas generator in Embodiment 1 of this invention. First, refer to the figure 1 , the overall structure of the gas generator 1A of this embodiment will be described.

[0061] Such as figure 1 As shown, the gas generator 1A of this embodiment has a short cylindrical casing with both ends in the axial direction closed, and the holding part 30, the igniter 40, and the gas generator are housed in the casing as components. agent 61, filter 70 and the like. The short cylindrical casing includes a lower side shell 10 and an upper side shell 20 . Each of the lower side shell 10 and the upper side shell 20 is composed of a press-formed product formed by press-working a single metal plate-shaped member.

[0062] The lower side shell 10 and the upper side shell 20 are respectively formed in a bottomed cylindrical shape, and these open surfaces are combined and joined to face each other to constitute an outer shell portion of the housing...

Embodiment approach 2

[0115] Figure 7 It is a schematic diagram of the gas generator in Embodiment 2 of this invention. also, Figure 8A It is a plan view of the holding part of the gas generator of this embodiment, Figure 8B is the bottom view of the igniter. Below, refer to these Figure 7 , Figure 8A and Figure 8B , the configuration of the gas generator 1B of this embodiment will be described.

[0116] Such as Figure 7 As shown, the gas generator 1B of this embodiment differs from the gas generator 1A of Embodiment 1 of the present invention described above in the shape of the connecting portion 33 of the holding portion 30 . Specifically, in the gas generator 1B of the present embodiment, the insertion hole 38 provided in the connecting portion 33 does not have a shape corresponding to the shape of the pair of terminal pins 42 of the igniter 40, but is viewed from a larger plan view. Consists of a single hole in a perfect circle shape. Therefore, the insertion hole 38 does not fu...

Embodiment approach 3

[0123] Figure 10 It is a schematic diagram of the gas generator in Embodiment 3 of this invention. Below, refer to the Figure 10 , the configuration of the gas generator 1C of this embodiment will be described.

[0124] Such as Figure 10 As shown, the gas generator 1C of the present embodiment is different from the gas generator 1A of the first embodiment of the present invention described above in the surface shape of the protruding cylindrical portion 13 provided on the lower side shell 10 . Specifically, in the gas generator 1C of the present embodiment, a plurality of recesses 16 are provided on the surface of the protruding cylindrical portion 13 on the combustion chamber 60 side.

[0125] The plurality of recesses 16 are in a shape that does not continuously surround the protruding cylindrical portion 13 at least along the circumferential direction (that is, not in the shape of an annular groove). It is formed by setting marks on the surface after processing. In ...

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PUM

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Abstract

A gas generator (1A) includes a lower shell (10), an upper shell (2), a holding portion (30), an igniter (40), and a filter (70). The lower shell (10) is made of a press-formed product formed by press-working one plate-shaped member made of metal, and includes a protruding cylindrical portion (13) and an opening (15) provided in the protruding cylindrical portion (13). The holding portion (13) is formed from a resin-molded portion formed by attaching an insulating fluid resin material to a bottom plate portion (11) so as to reach a part of an outer surface from a part of an inner surface of the bottom plate portion (11) of the lower shell (10) through the opening (15) and solidifying the same, and includes an accommodation recess portion (35) in a portion opposed to a top plate portion (21). The igniter (40) is held by the holding portion (30) while it is inserted in the accommodation recess portion (30) from a side of the top plate portion (21) and fitted therein.

Description

technical field [0001] The present invention relates to a gas generator incorporated in an occupant protection device, and more particularly, to a so-called disc-type gas generator incorporated in an airbag device equipped on a steering wheel or the like of an automobile. Background technique [0002] Conventionally, airbag devices have been widely used as occupant protection devices from the viewpoint of occupant protection of automobiles and the like. The airbag device is equipped for the purpose of protecting the occupant from the impact that occurs when a vehicle or the like collides. When the vehicle or the like collides, the airbag is instantly inflated and deployed, and the airbag acts as a cushion to support the occupant's body. The gas generator is a device that is incorporated in the airbag device, and when a vehicle or the like collides, the igniter is ignited by energization from the control unit, and the gas generating agent is burned by the flame generated in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/264B01J7/00
CPCB60R21/2644B60R2021/26029C06D5/00B60R2021/26076
Inventor 大杉知士田中雄佑椋木大刚金镇汉
Owner NIPPON KAYAKU CO LTD
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