IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0297182
(2001-06-08)
|
우선권정보 |
JP-0211285 (2000-07-12); JP-0171851 (2000-06-08) |
국제출원번호 |
PCT//JP01/04855
(2002-12-03)
|
§371/§102 date |
20021203
(20021203)
|
국제공개번호 |
WO01//94162
(2001-12-13)
|
발명자
/ 주소 |
- Nakashima, Yoshihiro
- Katsuda, Nobuyuki
- Ohji, Nobuyuki
|
출원인 / 주소 |
- Diacel Chemical Industries, Ltd.
|
대리인 / 주소 |
Birch, Stewart, Kolasch &
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
3 |
초록
▼
A gas generator for an air bag is provided with a porous tube member, in which a portion opposing the ejecting direction of a flame and the like generated due to an activation of an ignition unit stored in an inner cylindrical member is formed as a flame-preventing annular portion having no opening,
A gas generator for an air bag is provided with a porous tube member, in which a portion opposing the ejecting direction of a flame and the like generated due to an activation of an ignition unit stored in an inner cylindrical member is formed as a flame-preventing annular portion having no opening, disposed in a gas generator housing. Further, a multistage type gas generating apparatus prevents an erroneous connection between a plurality of igniter stored in a gas generator 1 and outputting portions of an ignition signal outputting device. In the multistage type air bag apparatus, the gas generator includes a plurality of igniters, and a defining unit for specifying the unique connection between the respective ignition signal outputting unit and the respective igniters is provided in a connector provided in a lead wire for sending an ignition signal to each of the igniters.
대표청구항
▼
1. A gas generator for an air bag, comprising:a cylindrical housing having a gas discharge port; an inner cylindrical member provided inside the cylindrical housing and defining therein an ignition means accommodating chamber, the inner cylindrical member having a flame-transferring hole and a throu
1. A gas generator for an air bag, comprising:a cylindrical housing having a gas discharge port; an inner cylindrical member provided inside the cylindrical housing and defining therein an ignition means accommodating chamber, the inner cylindrical member having a flame-transferring hole and a through-hole; ignition means provided inside the ignition means accommodating chamber, the ignition means including an igniter activated by an activation signal and generating flame or heat due to an activation of the igniter; a first combustion chamber provided outside the inner cylindrical member in a radial direction of the cylindrical housing and storing a first gas generating agent adapted to be ignited and burned by the flame or heat generated by the ignition means and ejected from the flame-transferring hole and into the first combustion chamber to generate a combustion gas; a second combustion chamber provided inside the inner cylindrical member and adjacent to the ignition means accommodating chamber in an axial direction of the cylindrical housing, the second combustion chamber accommodating a second gas generating agent adapted to generate a combustion gas, the through-hole allowing a combustion gas generated due to combustion of the second gas generating agent to flow into the first combustion chamber; cylindrical coolant/filter means provided outside the first combustion chamber in the radial direction, the cylindrical coolant/filter means at least one of cooling and purifying the combustion gas; and a porous tube member provided between the inner cylindrical member and the coolant/filter means, the porous tube member having a porous annular portion provided with a plurality of openings and a flame-preventing annular portion provided with no opening, the flame-preventing annular portion being formed at a position where the flame-preventing annular portion opposes an ejecting direction of the flame or heat ejected from the flame-transferring hole, wherein the through-hole and the gas discharge port are provided at positions with respect to the axial direction of the cylindrical housing, such that the through-hole does not oppose the discharge port. 2. A gas generator for an air bag according to claim 1, further comprising:a partition wall that separates the second combustion chamber and the ignition means accommodating chamber. 3. A gas generator for an air bag according to claim 2, wherein, the porous annular portion is provided at a position where the porous annular portion opposes an ejecting direction of a combustion gas generated due to the combustion of the second gas generating agent.4. A gas generator for an air bag according to claim 3, wherein a plurality of flame-transferring holes and a plurality of through-holes are respectively arranged in the inner cylindrical member along a direction perpendicular to the axial direction, the flame-transferring holes face the flame-preventing annular portion, and the through-holes face the porous annular portion.5. A gas generator for an air bag according to claim 1, wherein the porous tube member includes a tube portion provided with the flame-preventing annular portion and the porous annular portion, the flame-preventing annular portion and the porous annular portion are provided adjacent to each other in an axial direction of the tube portion.6. A gas generator for an air bag according to claim 1, wherein the flame-transferring hole and the flame-preventing annular portion are provided at positions where the flame-transferring hole and the flame-preventing annular portion do not oppose gas discharge ports with respect to the radial direction of the cylindrical housing.7. A gas generator for an air bag according to claim 1, wherein the porous tube member includes a tube portion facing an inner peripheral surface of the coolant/filter means and a flange portion formed integrally at one end of the tube portion and extending inwardly.8. A gas generator for an air bag according to claim 7, wherein the gas discharge port is provided in a circumferential wall of the cylindrical housing, and the flange portion makes contact with an inner surface of a ceiling portion of the cylindrical housing that closes the circumferential wall.9. A gas generator for an air bag according to claim 1, wherein the first gas generating agent starts generating a combustion gas at a time shorter than 8 milliseconds from application of the activation signal to the igniter.10. A gas generator for an air bag according to claim 1, wherein the first gas generating agent stored in the first combustion chamber generates a combustion gas within 8 milliseconds after applying the activation signal to the igniter.11. A gas generator for an air bag according to claim 1, wherein the first gas generating agent includes a fuel and an oxidizer, and the oxidizer is a basic copper nitrate.12. A gas generator for an air bag according to claim 11, wherein the fuel includes a guanidine derivative.13. An air bag apparatus, comprising:a gas generator for an air bag according to claim 1; an impact sensor detecting an impact to activate the gas generator; an air bag into which a gas generated in the gas generator is introduced to inflate the air bag; and a module case storing the air bag. 14. A gas generator for an air bag, comprising:a cylindrical housing having a gas discharge port; an inner cylindrical member provided inside the cylindrical housing and defining therein an ignition means accommodating chamber, the inner cylindrical member having a flame-transferring hole and a through-hole; ignition means provided inside the ignition means accommodating chamber, the ignition means including an igniter activated by an activation signal and generating flame or heat due to an activation of the igniter; a first combustion chamber provided outside the inner cylindrical member in a radial direction of the cylindrical housing and storing a first gas generating agent adapted to be ignited and burned by the flame or heat generated by the ignition means and ejected from the flame-transferring hole and into the first combustion chamber to generate a combustion gas; a second combustion chamber provided inside the inner cylindrical member and adjacent to the ignition means accommodating chamber in an axial direction of the cylindrical housing, the second combustion chamber accommodating a second gas generating agent adapted to generate a combustion gas, the through-hole allowing a combustion gas generated due to combustion of the second gas generating agent to flow into the first combustion chamber; cylindrical coolant/filter means provided outside the first combustion chamber in the radial direction, the cylindrical coolant/filter means at least one of cooling and purifying the combustion gas; and a porous tube member provided between the inner cylindrical member and the coolant/filter means, the porous tube member having a flame-preventing annular portion having no opening where the porous tube member faces an ejecting direction of the flame or heat of the ignition means ejected through the flame-transferring hole, and a porous annular portion provided with a plurality of openings where the porous tube member opposes an ejecting direction of a combustion gas generated due to the combustion of the second gas generating agent and ejected through the through-hole. 15. A gas generator for an air bag according to claim 14, wherein a plurality of flame-transferring holes and a plurality of through-holes are respectively arranged in the inner cylindrical member along a direction perpendicular to the axial direction, the flame-transferring holes face the flame-preventing annular portion, and the through-holes face the porous annular portion.16. A gas generator for an air bag according to claim 14, wherein the porous tube member includes a tube portion provided with the flame-preventing annular portion and the porous annular portion, the flame-preventing annular portion and the porous annular portion are provided adjacent to each other in an axial direction of the tube portion.17. A gas generator for an air bag according to claim 14, wherein the flame-transferring hole and the flame-preventing annular portion are provided at positions where the flame-transferring hole and the flame-preventing annular portion do not oppose the gas discharge port with respect to the radial direction of the cylindrical housing.18. A gas generator for an air bag according to claim 14, wherein the porous tube member includes a tube portion facing an inner peripheral surface of the coolant/filter means and a flange portion formed integrally at one end of the tube portion and extending inwardly.19. A gas generator for an air bag according to claim 18, wherein the gas discharge port is provided in a circumferential wall of the cylindrical housing, and the flange portion makes contact with an inner surface of a ceiling portion of the cylindrical housing that closes the circumferential wall.20. A gas generator for an air bag according to claim 14, wherein the first gas generating agent starts generating a combustion gas at a time shorter than 8 milliseconds from application of the activation signal to the igniter.21. A gas generator for an air bag according to claim 14, wherein the first gas generating agent stored in the first combustion chamber generates a combustion gas within 8 milliseconds after applying the activation signal to the igniter.22. A gas generator for an air bag according to claim 14, wherein the first gas generating agent includes a fuel and an oxidizer, and the oxidizer is a basic copper nitrate.23. A gas generator for an air bag according to claim 22, wherein the fuel includes a guanidine derivative.24. An air bag apparatus, comprising:a gas generator for an air bag according to claim 14; an impact sensor detecting an impact to activate the gas generator; an air bag into which a gas generated in the gas generator is introduced to inflate the air bag; and a module case storing the air bag.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.