IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0689391
(2007-03-21)
|
등록번호 |
US-7503581
(2009-03-17)
|
우선권정보 |
JP-2006-077957(2006-03-22) |
발명자
/ 주소 |
- Yabuta,Mikio
- Ueda,Masayuki
|
출원인 / 주소 |
- Daicel Chemical Industries, Ltd.
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
▼
The present invention provides a gas generator for an occupant restraining device of a vehicle, comprising a substantially cup-like shaped diffuser shell having a plurality of gas discharge ports on a circumferential wall portion, a substantially cup-like shaped closure shell combined with the diffu
The present invention provides a gas generator for an occupant restraining device of a vehicle, comprising a substantially cup-like shaped diffuser shell having a plurality of gas discharge ports on a circumferential wall portion, a substantially cup-like shaped closure shell combined with the diffuser shell to form an outer container, a housing formed by the diffuser shell and closure shell, an ignition device, a gas generating agent ignited and combusted by activation of the ignition device to generate a combustion gas, and a substantially cylindrical filter for purifying and cooling the combustion gas generated from the gas generating agent, all accommodated in the housing, the housing formed by inserting part of an outer peripheral surface in the open portion side of the closure shell into part of the inner peripheral surface of the open portion side in the diffuser shell to abut against each other, so that they are integrated, the filter supported by abutting one end surface thereof against a ceiling surface of the diffuser shell and abutting the other end surface thereof against at least an annular end surface of the open portion of the closure shell, an annular space provided between the circumferential wall having the gas discharge ports of the diffuser shell and an outer circumferential surface of the filter.
대표청구항
▼
The invention claimed is: 1. A gas generator for an occupant restraining device of a vehicle, including a substantially cup-like shaped diffuser shell having a plurality of gas discharge ports on a circumferential wall portion, a substantially cup-like shaped closure shell combined with the diffuse
The invention claimed is: 1. A gas generator for an occupant restraining device of a vehicle, including a substantially cup-like shaped diffuser shell having a plurality of gas discharge ports on a circumferential wall portion, a substantially cup-like shaped closure shell combined with the diffuser shell to form an outer container, a housing formed by a diffuser shell and closure shell, an ignition device, a gas generating agent ignited and combusted by activation of the ignition device to generate a combustion gas, and a substantially cylindrical filter for purifying and cooling the combustion gas generated by the gas generating agent, the ignition device, the gas generating agent and the cylindrical filter being accommodated in the housing and forming a single ignition chamber, the housing formed by inserting part of an outer peripheral surface in an open portion side of the closure shell into part of an inner peripheral surface in an open portion side of the diffuser shell to abut against each other, so that they are integrated, an annular retainer disposed inside the housing and having at least one annular surface thereof supported by an annular end surface of an open portion of the closure shell, the filter supported by abutting one end surface thereof against a ceiling surface of the diffuser shell and abutting the other surface against another annular surface of the annular retainer, a annular space obtained between the circumferential wall portion having the gas discharge ports of the diffuser shell and an outer circumferential surface of the filter. 2. The gas generator for an occupant restraining device for a vehicle according to claim 1, wherein the annular retainer has an outer annular surface and an inner annular surface formed by providing a step with respect to the outer annular surface, the outer annular surface is supported on the annular end surface of the open portion of the closure shell, and the other end surface of the filter is supported on at least the inner annular surface. 3. The gas generator for an occupant restraining device for a vehicle according to claim 1 or 2, wherein the filter is vertically compressed by the ceiling surface of the diffuser shell and the annular retainer. 4. A gas generator for an occupant restraining device for a vehicle, comprising a substantially cup-shaped diffuser shell having a plurality of gas discharge ports and an open portion, a substantially cup-shaped closure shell having an open portion and combined with the diffuser shell to form an outer container, a housing formed by inserting an inner peripheral surface of the open portion of the diffuser shell into an outer peripheral surface of the open portion of the closure shell to abut against each other, an ignition device, a gas generating agent combusted by activation of the ignition device to generate combustion gas, a substantially cylindrical filter for purifying and cooling the combustion gas, and a retainer supporting a lower end surface of the filter, the ignition device, the gas generating agent, and the cylindrical filter being accommodated in the housing, the retainer comprising a first disk portion abutting against the closure shell, an annular portion extending from the first disk portion and abutting against a lower peripheral wall surface of the filter and a second disk portion extending from the annular portion and abutting against the lower end surface of the filter, the filter supported by abutting an upper end surface thereof against a ceiling surface of the diffuser shell and abutting the lower end surface against the second disk portion, and the lower end surface thereof positioned with a distance from a bottom plate of the closure shell, an annular space provided between the circumferential wall portion of the housing and outer peripheral surface of the filter. 5. The gas generator for an occupant restraining device according to claim 4, wherein the second disk portion disposed between the lower end surface of the filter and bottom plate of the closure shell, having the distance from the bottom plate of the closure shell, and the filter is compressed vertically only by the ceiling surface of the diffuser shell and the retainer. 6. The gas generator for an occupant restraining device according to claim 5, wherein the upper end surface of the filter abuts against an annular slope formed in the ceiling surface of the diffuser shell. 7. The gas generator for an occupant restraining device according to any one of claims 4 to 6, wherein a holding retainer for preventing short-pass of combustion gas is disposed to abut against the ceiling surface of the diffuser shell and an inner peripheral surface of an upper end portion of the filter.
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