IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0081723
(2011-04-07)
|
등록번호 |
US-8459692
(2013-06-11)
|
우선권정보 |
JP-2010-89460 (2010-04-08) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Daicel Chemical Industries, Ltd.
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
5 |
초록
▼
The present application provides a gas generator including: a cylindrical housing with a gas discharge port, one end of the tubular housing being closed by a closing member including a disk-shaped main body portion, an annular projection portion and the peripheral surface of the annular projection p
The present application provides a gas generator including: a cylindrical housing with a gas discharge port, one end of the tubular housing being closed by a closing member including a disk-shaped main body portion, an annular projection portion and the peripheral surface of the annular projection portion, a transfer charge chamber housing defining a transfer charge chamber charged with a transfer charge and being attached to the closing member, the transfer charge chamber housing having a cup-like shape including a flame-transferring hole at a bottom surface, a flange portion and a annular wall surface extending in the axial direction of the housing from the flange portion, being mounted such that the annular wall surface thereof is fitted into an annular groove, and being fixed by the flange portion pressed in the axial direction by a supporting member and a sealing member disposed in a remaining space of the annular groove and sealing between the tubular housing and the closing member.
대표청구항
▼
1. A gas generator, comprising: a cylindrical housing having both ends closed, a gas discharge port in a peripheral surface thereof and a combustion chamber charged with a gas generating agent therein;a closing member closing one of the closed ends of the cylindrical housing and including a disk-sha
1. A gas generator, comprising: a cylindrical housing having both ends closed, a gas discharge port in a peripheral surface thereof and a combustion chamber charged with a gas generating agent therein;a closing member closing one of the closed ends of the cylindrical housing and including a disk-shaped main body portion, an annular projection portion formed in a peripheral surface at one side of the main body portion, and a peripheral surface of the annular projection portion abutting against an inner peripheral surface of the cylindrical housing,an igniter attached to the closing member; anda transfer charge chamber housing defining a transfer charge chamber charged with a transfer charge, and attached to the closing member so as to surround the igniter,the transfer charge chamber housing having a cup-like shape including a peripheral surface, a bottom surface formed with a flame-transferring hole, a flange portion formed at an opening portion thereof, and an annular wall surface extending in an axial direction of the cylindrical housing from the flange portion,the transfer charge chamber housing being mounted such that the annular wall surface thereof is fitted into a part of an annular groove defined by the cylindrical housing, the main body portion and the annular projection portion of the closing member, and the flange portion abuts against a surface of the main body portion that faces the transfer charge chamber,the transfer charge chamber housing being fixed to the closing member by the flange portion pressed in the axial direction by a supporting member provided inside the cylindrical housing; anda sealing member being disposed in a remaining space of the annular groove and sealing between the cylindrical housing and the closing member, such that an end of the annular wall surface of the transfer charge chamber housing extends parallel to the cylindrical housing and directly opposes the sealing member. 2. A gas generator according to claim 1, wherein the supporting member for supporting the flange portion of the transfer charge chamber housing is a tubular filter disposed with a gap from the inner peripheral surface of the tubular housing, and one end of the tubular filter is supported by abutting against a surface of the other of the closed ends of the tubular housing, while the other end surface of the tubular filter presses and supports the flange portion. 3. A gas generator according to claim 1, wherein the supporting member for supporting the flange portion of the transfer charge chamber housing includes a combination of a tubular filter disposed with a gap from the inner peripheral surface of the tubular housing and a tubular retainer having one or two or more members,one end of the tubular filter is supported by abutting against a surface of one of the closed ends of the tubular housing, while the other end surface of the tubular filter is supported by abutting against one end of the tubular retainer, andthe other end of the tubular retainer presses and supports the flange portion. 4. A gas generator according to claim 1, wherein the supporting member for supporting the flange portion of the transfer charge chamber housing includes a combination of a tubular filter disposed with a gap from the inner peripheral surface of the tubular housing and an annular step portion obtained by deforming the tubular housing,one end of the tubular filter is supported by abutting against a surface of the one of the closed ends of the tubular housing, while the other end surface of the tubular filter presses and supports the flange portion, and the step portion also presses and supports the flange portion. 5. A gas generator according to claim 1, wherein the transfer charge chamber housing is press-fitted to the closing member by adjusting an outer diameter of the main body portion of the closing member and an inner diameter of the annular wall surface of the transfer charge chamber housing. 6. A gas generator according to claim 1, wherein the igniter, the closing member, the sealing member, and the transfer charge housing are integrally assembled into a transfer charge chamber unit. 7. A gas generator according to claim 1, wherein an outer diameter of the annular wall surface deforms inward in a radial direction to press an outer peripheral surface of the main body portion by deforming the bottom surface in an axial direction toward the combustion chamber. 8. A gas generator according to claim 1, wherein, upon activation of the gas generator, the transfer charge chamber housing deforms due to the bottom surface of the transfer charge chamber housing deforming in the axial direction toward the combustion chamber, which deforms the annular wall surface inward in a radial direction to press an outer peripheral surface of the main body portion. 9. A gas generator according to claim 3, wherein the tubular retainer includes, a retainer provided with an annular plane surface, an annular inner peripheral surface that extends in an axial direction of the cylindrical housing from an inner peripheral edge of the annular plane surface, and an annular outer peripheral surface that extends from an outer peripheral edge of the annular plane surface in an opposite direction of the annular inner peripheral surface, anda spacer provided with a peripheral wall portion, a first annular plane surface formed on one end of the peripheral wall surface portion, and a second annular plane surface formed on the other end of the peripheral wall portion. 10. A gas generator according to claim 9, further comprising: a tubular filter provided within the combustion chamber such that the annular plane surface of the retainer abuts against an end surface of the tubular filter and the annular inner peripheral surface of the retainer abuts against an inner peripheral surface of the tubular filter. 11. A gas generator according to claim 9, wherein the peripheral wall portion of the spacer abuts against the inner peripheral surface of the cylindrical housing and against the annular outer peripheral surface of the retainer, and wherein the first annular plane surface abuts against the annular plane surface of the retainer and the second annular plane surface abuts against the flange portion of the transfer charge chamber housing. 12. A gas generator according to claim 9, wherein the cylindrical housing includes two convex portions that project inward and formed at intervals in an axial direction, and wherein the annular outer peripheral surface of the retainer is placed between two convex portions. 13. A gas generator according to claim 12, wherein the peripheral wall portion of the spacer facing one of the two convex portions is depressed inward.
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