Gas generator and method of manufacturing the same
First Claim
1. A gas generator which has a short cylindrical external shape, comprising:
- a holder which fixes an igniter; and
a housing which contains gas generants therein, the housing including a bottomed member provided with a hole on the bottom, into which hole the holder is fitted,wherein the holder is fitted in the hole, the holder and the bottomed member are pressed against each other in a diameter direction of the hole, and thus the holder is fixed to the housing, thus providing airtightness in a fixed contact part between the holder and the bottomed member, andwherein the holder includes a first material and the bottomed member includes a second material, a tensile strength of the first material is different from a tensile strength of the second material, and one that includes the material with a lower tensile strength is deformed.
1 Assignment
0 Petitions
Accused Products
Abstract
A gas generator that eliminates work for welding-fixing a holder to a housing and subjecting the holder to an excess processing, which can be easily manufactured at low cost, and a method for manufacturing the gas generator. The gas generator includes an approximately short cylindrical housing including a bottomed member and a lid member, gas generants arranged in the housing to generate a high-temperature gas by combustion, a filter arranged in an inner circumference part of the housing so as to surround the gas generants in a diameter direction of the housing, an igniter energized from the outside to ignite, and a holder to which the igniter is fixed and that is fixed to the bottomed member so that the igniter is arranged coaxially with the housing. At least one of the holder and the bottomed member is clamped, and pressed and deformed in an axial direction of a hole so that the holder is fixed to the bottomed member.
24 Citations
14 Claims
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1. A gas generator which has a short cylindrical external shape, comprising:
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a holder which fixes an igniter; and a housing which contains gas generants therein, the housing including a bottomed member provided with a hole on the bottom, into which hole the holder is fitted, wherein the holder is fitted in the hole, the holder and the bottomed member are pressed against each other in a diameter direction of the hole, and thus the holder is fixed to the housing, thus providing airtightness in a fixed contact part between the holder and the bottomed member, and wherein the holder includes a first material and the bottomed member includes a second material, a tensile strength of the first material is different from a tensile strength of the second material, and one that includes the material with a lower tensile strength is deformed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A gas generator which has a short cylindrical external shape, comprising:
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a holder which fixes an igniter; and a housing which contains gas generants therein, the housing including a bottomed member provided with a hole on the bottom, into which hole the holder is fitted, wherein the holder is fitted in the hole, the holder and the bottomed member are pressed against each other in a diameter direction of the hole, and thus the holder is fixed to the housing, thus providing airtightness in a fixed contact part between the holder and the bottomed member, and wherein the bottomed member includes an iron-based material, and the holder includes an aluminum-based material. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification