IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0095073
(2002-03-12)
|
우선권정보 |
JP-0073948 (2001-03-15); JP-0211607 (2001-07-12) |
발명자
/ 주소 |
- Iwai, Yasunori
- Miyaji, Katsuhito
- Hatomoto, Atsushi
- Iwakiri, Toshirou
|
출원인 / 주소 |
- Daicel Chemical Industries, Ltd.
|
대리인 / 주소 |
Birch, Stewart, Kolasch &
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인용정보 |
피인용 횟수 :
5 인용 특허 :
2 |
초록
▼
Gas generator for air bag to secure safety and reliability in operation while reducing size of container in a simple structure with reduced number of parts. With this gas generator, ignition and combustion performance of the gas generating agent are enhanced. A partition wall member defines the inne
Gas generator for air bag to secure safety and reliability in operation while reducing size of container in a simple structure with reduced number of parts. With this gas generator, ignition and combustion performance of the gas generating agent are enhanced. A partition wall member defines the inner space of a housing into at least two chambers in the gas generator, a disk-like dividing member is disposed inside the partition wall member, a peripheral surface of the dividing member is provided with a pawl spreading like a petticoat toward a skirt portion of the partition wall member, and the pawl is fitted into a groove circumferentially formed in an inner peripheral surface of the annular peripheral wall.
대표청구항
▼
1. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers, an inner peripheral surface of the annular peripheral wall h
1. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers, an inner peripheral surface of the annular peripheral wall having a groove formed in a circumferential direction thereof; and a dividing member in the form of a disk disposed inside the partition wall member and extending in a radial direction of the annular peripheral wall, a peripheral surface of the dividing member being provided with a pawl that tapers outwardly in a thickness direction of the dividing member, and the pawl being fitted in the groove, wherein an end portion or an outer peripheral surface of the pawl makes contact tightly with a side surface or a bottom surface of the groove. 2. A gas generator for an air bag according to claim 1, wherein an ignition means accommodating chamber is provided inside the partition wall member at a tip end side of the pawl, an ignition means is accommodated in the ignition means accommodation chamber, and the ignition means includes an igniter adapted to receive an activation signal and a transfer charge adapted to be ignited and burned by actuation of the igniter.3. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers, an inner peripheral surface of the annular peripheral wall having a groove formed in a circumferential direction thereof; ignition means having an igniter accommodated inside the partition wall member, the igniter being disposed in a skirt portion side of the partition wall member; and a dividing member in the form of a disk disposed inside the partition wall member and extending in a radial direction of the annular peripheral wall, a peripheral surface of the dividing member being provided with a pawl that tapers outwardly toward a skirt portion of the partition wall member, and the pawl being fitted in the groove, wherein an end portion or an outer peripheral surface of the pawl makes contact tightly with a side surface or a bottom surface of the groove. 4. A gas generator for an air bag according to one of claims 1 and 3, wherein a first combustion chamber in which a gas generating agent is accommodated is provided radially outside the partition wall member, and the annular peripheral wall is formed with a flame-transferring hole that communicates the first combustion chamber and an ignition means accommodating chamber.5. A gas generator for an air bag according to one of claims 1, and 3, wherein the dividing member is disposed inside the partition wall member to define an ignition means accommodating chamber for accommodating an ignition means in a skirt portion side of the annular peripheral wall, a combustion chamber for accommodating a gas generating agent is formed on the opposite side of the ignition means accommodating chamber partitioned by the dividing member, and the dividing member is formed with a communication hole which is open at said combustion chamber.6. A gas generator for an air bag according to claim 5, further comprising:a resilient supporting member for supporting the gas generating agent is disposed in the combustion chamber, the resilient supporting member including a resilient member and a flat circular supporting surface spreading in a radial direction of the combustion chamber. 7. An air bag apparatus, comprising:a gas generator for an air bag according to one of claims 1 and 3; an impact sensor for sensing an impact to actuate the gas generator; an air bag to which gas generated by the gas generator is introduced to inflate; and a module case for accommodating the air bag. 8. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers; a dividing member in the form of a disk disposed inside the partition wall member and extending in a radial direction of the annular peripheral wall and defining an ignition means accommodating chamber in a skirt portion side of the partition wall member; and ignition means including at least two igniters accommodated inside the partition wall member, the igniters being disposed in the skirt portion side of the partition wall member, wherein one of the igniters is accommodated inside a cylindrical seal cup member divided from a space where the other igniter is provided and wherein the seal cup member is formed at a lower end with an opening portion spreading radially, an upper end of the seal cup member is press-fitted into a groove formed in the dividing member, an O-ring is disposed inside the opening portion of the seal cup member, between the seal cup member and the igniter accommodated in the seal cup member in order to seal between the igniter and the seal cup member. 9. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers, an inner peripheral surface of the annular peripheral wail having a groove formed in a circumferential direction thereof; and a dividing member in the form of a disk disposed inside the partition wall member and extending in a radial direction of the annular peripheral wall, a peripheral surface of the dividing member constituting a pawl that tapers outwardly in a thickness direction of the dividing member, and the pawl being fitted in the groove, wherein an end portion or an outer peripheral surface of the pawl makes contact tightly with a side surface or a bottom surface of the groove. 10. A gas generator for an air bag, comprising:a housing having a gas discharging port; a partition wall member having an annular peripheral wall disposed in the housing for dividing an inner space of the housing into at least two chambers, an inner peripheral surface of the annular peripheral wall having a groove fanned in a circumferential direction thereof; ignition means having an igniter accommodated inside the partition wall member, the igniter being disposed in a skirt portion side of the partition wall member; and a dividing member in the form of a disk disposed inside the partition wall member and extending in a radial direction of the annular peripheral wall, a peripheral surface of the dividing member constituting a pawl that tapers outwardly toward a skirt portion of the partition wall member, and the pawl being fitted in the groove, wherein an end portion or an outer peripheral surface of the pawl makes contact tightly with a side surface or a bottom surface of the groove.
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