[특허]Gas generator for air bag and air bag device

Daicel Chemical Industries, Ltd.

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특허 상세정보

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Gas generator for air bag and air bag device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60H-021/28
미국특허분류(USC)	280/741
출원번호	US-0129325 (2000-11-29)
우선권정보	JP-0338039 (1999-11-29); JP-0338038 (1999-11-29); JP-0338037 (1999-11-29)
국제출원번호	PCT/JP00/08396 (2002-05-06)
§371/§102 date	20020506 (20020506)
국제공개번호	WO01/40032 (2001-06-07)
발명자 / 주소	Watase, Takefumi Yabuta, Mikio
출원인 / 주소	Daicel Chemical Industries, Ltd.
대리인 / 주소	Birch, Stewart, Kolasch &
인용정보	피인용 횟수 : 5 인용 특허 : 18

초록
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The present invention provides a gas generator capable of easily and unfailingly closing a gas discharging port formed in a housing. The invention provides a gas generator for an air bag in which an amount of accommodated gas generating agent can be varied and the gas generating agent can be ignited and burnt unfailingly even by the ignition means having normal output. The invention provides a gas generator which has sealing structures as little as possible and in addition to a simple structure and can be manufactured easily, and in that a activation per...

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청구항
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1. A gas generator for an air bag comprising, in a cylindrical housing, provided at its peripheral wall with a plurality of gas discharging ports, which housing is longer in the axial direction than in the radial direction, an ignition means to be actuated upon the impact, and a gas generating means to be ignited and burnt by the ignition means, whereina combustion chamber for accommodating the gas generating means and a filter means accommodating chamber for accommodating a filter means are formed in the housing adjacent to each other in the axial direction and these chambers communicate with each other, the combustion chamber accommodating the gas generating means is separated from the filter means accommodating chamber with a partitioning member curved into a convex shape towards the inside of the combustion chamber and having a through-hole, and moisture-proofing of the housing is achieved by a seal tape which closes the gas discharging ports. 2. A gas generator for an air bag according to claim 1, wherein an inwardly flange-shaped plate member is disposed in the combustion chamber provided in the cylindrical housing, the plate member is fitted into the combustion chamber to be able to slide in the axial direction of the housing, and the gas generating means accommodated in the combustion chamber is pressed and/or held towards the filter means accommodating chamber side.3. A gas generator for an air bag according to claim 1, wherein a flame-transferring tube formed at its peripheral wall with a plurality of flame-transferring holes is accommodated in the combustion chamber, the flame-transferring tube extends in the axial direction of the housing, and an end of the tube is connected into an ignition means accommodating chamber in which ignition means is accommodated.4. A gas generator for an air bag comprising, in a cylindrical housing, provided at its peripheral wall with a plurality of gas discharging ports, which housing is longer in the axial direction than in the radial direction, an ignition means to be actuated upon the impact, and a gas generating means to be ignited and burnt by the ignition means, whereina combustion chamber for accommodating the gas generating means and a filter means accommodating chamber for accommodating a filter are formed in the housing adjacent to each other in the axial direction, the gas generating means accommodated in the combustion chamber is pressed and/or held towards the filter means accommodating chamber side by an inwardly flange-shaped plate member fitted into the combustion chamber, and the plate member is slidable in the axial direction of the housing, the combustion chamber accommodating the gas generating means is separated from the filter means accommodating chamber with a partitioning member curved into a convex shape towards the inside of the combustion chamber and having a through-hole, and moisture-proofing of the housing is achieved by a seal tape which closes the gas discharging port. 5. A gas generator for an air bag according to claim 4, wherein a flame-transferring tube formed at its peripheral wall with a plurality of flame-transferring holes is accommodated in the combustion chamber, the flame-transferring tube extends in the axial direction of the housing, and an end of the tube is connected into an ignition means accommodating chamber in which the ignition means is accommodated.6. A gas generator for an air bag comprising, in a cylindrical housing, provided at its peripheral wall with a plurality of gas discharging ports, which housing is longer in the axial direction than in the radial direction, an ignition means to be actuated upon the impact, and a gas generating means to be ignited and burnt by the ignition means, whereina combustion chamber for accommodating the gas generating means and a filter means accommodating chamber for accommodating a filter means are formed in the housing adjacent to each other in the axial direction, the combustion chamber accommodating the gas generating means is separated from the filter means accommodating chamber with a partitioning member curved into a convex shape towards the inside of the combustion chamber and having a through-hole, a flame-transferring tube formed at its peripheral wall with a plurality of flame-transferring holes is accommodated in the combustion chamber, the flame-transferring tube extends in the axial direction of the housing, and an end of the tube is connected into an ignition means accommodating chamber in which ignition means is accommodated, and moisture-proofing in the housing is achieved by closing the gas discharging ports with a seal tape. 7. A gas generator for an air bag according to claim 6, wherein an inwardly flange-shaped plate member is disposed in the combustion chamber, the plate member is fitted into the combustion chamber to be able to slide in the axial direction of the housing, and the gas generating means accommodated in the combustion chamber is pressed and/or held towards the filter means accommodating chamber side.8. A gas generator for an air bag according to any one of claims 1, 2, 3, 4, 5, 6, or 7, wherein the cylindrical housing comprises a cylindrical diffuser shell provided at its peripheral wall with a plurality of gas discharging ports, and closure shells for closing the opposite end openings of the peripheral wall, the closure shell for closing the opening in the combustion chamber side comprises an annular portion connected to an opening edge of the diffuser shell and a cylindrical portion projecting out of the housing, and the ignition means is accommodated inside of the cylindrical portion.9. A gas generator for an air bag comprising, in a cylindrical housing which is longer in the axial direction than in the radial direction, two ignition means to be actuated upon the impact and accommodated in the housing, and two combustion chambers accommodating gas generating means to be ignited and burnt by the ignition means, whereinthe combustion chambers are provided on the opposite ends in the housing, a filter means accommodating chamber for accommodating filter means is provided between these combustion chambers, either one of the combustion chambers communicates with the filter means accommodating chamber, either one of the combustion chambers is defined inside of a cup member provided with a plurality of through-holes formed in a peripheral wall of the cup member, each through-hole is closed with a closing member, and a flow path from the through-holes to the filter means accommodating chamber is formed between an outer peripheral surface of the cup member and an inner peripheral surface of the housing. 10. A gas generator for an air bag according to claim 9, wherein the cylindrical housing is provided at its peripheral wall with a plurality of gas discharging ports, and moisture-proof in the combustion chamber communicating with the filter means accommodating chamber is achieved by a seal tape which closes gas discharging port.11. A gas generator for an air bag according to claim 9, wherein the closing member is a stainless foil having a thickness of 20 to 80 μm.12. A gas generator for an air bag according to claim 9, wherein an inwardly flange-shaped plate member is disposed in the combustion chamber provided in the cylindrical housing, and the plate member is fitted into the combustion chamber to push and/or hold said gas generating means accommodated in the combustion chamber on the side of the filter means accommodating chamber.13. A gas generator for an air bag according to claim 9, wherein the cylindrical housing comprises a cylindrical diffuser shell provided at its peripheral wall with a plurality of gas discharging ports, and closure shells for closing the opposite end openings of the peripheral wall, the closure shell comprises an annular portion and a cylindrical portion projecting out of the housing, and the ignition means is accommodated inside the cylindrical portion.14. A gas generator for an air bag according to claim 9, wherein at least one of a plurality of the combustion chambers accommodates a flame-transferring tube provided at its peripheral wall with a plurality of flame-transferring holes, the flame-transferring tube extends in the axial direction of the housing, and an end of the tube is connected into the interior of the cylindrical portion of the closure shell where the ignition means is accommodated.15. A gas generator for an air bag according to claim 9, wherein the filter means accommodating chamber and the combustion chamber which communicates with the filter means accommodating chamber are separated from each other by a partitioning member having a through-hole.16. A gas generator for an air bag according to claim 15, wherein the partition member is curved into a convex shape towards the inside of the combustion chamber which communicates with the filter means accommodating chamber.17. An air bag apparatus comprisinga gas generator for an air bag, an impact sensor to detect the impact and actuate the gas generator, an air bag which inflates by introducing, thereinto, gas generated by the gas generator, and a module case for accommodating the air bag, wherein the gas generator for the air bag is one described in any of claims 9, 10, and 11 to 16.

이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 5

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Daicel Chemical Industries, Ltd. (1)

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Gas generator for air bag and air bag device

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이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 5

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Gas generator for air bag and air bag device

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이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 5

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