Combustion chamber screen, especially for an inflator, inflator, airbag module vehicle safety system and method of manufacturing a combustion chamber screen
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60R-021/264
B60R-021/272
B60R-021/26
출원번호
US-0053645
(2013-10-15)
등록번호
US-8979122
(2015-03-17)
우선권정보
DE-10 2012 021 204 (2012-10-30)
발명자
/ 주소
Ramp, Manfred
출원인 / 주소
TRW Airbag Systems GmbH
대리인 / 주소
Tarolli, Sundheim, Covell & Tummino LLP
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
The invention relates to a combustion chamber screen, especially for an inflator, that includes plural flow orifices and bent segments. In accordance with the invention, the bent segments are arranged around a center (M) of the combustion chamber screen so that in the circumferential direction of th
The invention relates to a combustion chamber screen, especially for an inflator, that includes plural flow orifices and bent segments. In accordance with the invention, the bent segments are arranged around a center (M) of the combustion chamber screen so that in the circumferential direction of the combustion chamber screen (10) a waveform having plural wave peaks (12) and wave troughs (13) is formed.
대표청구항▼
1. A combustion chamber screen (10) for an inflator, comprising plural flow orifices (11) and bent segments, wherein the bent segments are arranged around a center (M) of the combustion chamber screen so that in the circumferential direction of the combustion chamber screen a waveform including plur
1. A combustion chamber screen (10) for an inflator, comprising plural flow orifices (11) and bent segments, wherein the bent segments are arranged around a center (M) of the combustion chamber screen so that in the circumferential direction of the combustion chamber screen a waveform including plural wave peaks (12) and wave troughs (13) is formed, wherein the wave peaks (12) are ascending starting from the center (M) toward the circumferential edge (U) of the combustion chamber screen. 2. The combustion chamber screen according to claim 1, wherein at least two wave peaks (12) are formed. 3. The combustion chamber screen according to claim 1, wherein substantially planar flanks (14.1, 14.2) are arranged in a V-shape form at least one of the wave peaks (12) and the wave troughs (13). 4. The combustion chamber screen according to claim 1, wherein the height distance (A) between the wave troughs (13) and the wave peaks (12) is 4 to 8 mm, wherein the center (M) of the combustion chamber screen is located in a plane (EM) which bisects the height distance (A) between the wave troughs (13) and the wave peaks (12). 5. An inflator comprising a combustion chamber screen according to claim 1. 6. An airbag module comprising an inflator, an airbag inflatable by the inflator and a fastening group for attaching the airbag module to a vehicle, characterized in that the inflator is configured in accordance with claim 5. 7. A vehicle safety system, especially for protecting a person, for example a vehicle occupant or a pedestrian, comprising: an inflator, especially including an airbag module, and an electronic control unit by means of which the inflator can be activated when a trigger situation is provided, wherein the inflator is configured in accordance with claim 5. 8. An inflator comprising: at least one combustion chamber filled with solid propellant and having a discharge end,at least one igniter unit by which the solid propellant can be ignited andat least one combustion chamber screen according to claim 1 which is adjacent to the solid propellant at the discharge end and delimits the combustion chamber. 9. An airbag module comprising an inflator, an airbag inflatable by the inflator and a fastening group for attaching the airbag module to a vehicle, characterized in that the inflator is configured in accordance with claim 8. 10. A vehicle safety system, especially for protecting a person, for example a vehicle occupant or a pedestrian, comprising: an inflator, especially including an airbag module, and an electronic control unit by means of which the inflator can be activated when a trigger situation is provided, wherein the inflator is configured in accordance with claim 8. 11. A method of manufacturing a combustion chamber screen according to claim 1, wherein a disk is interposed between a matrix and a punch and during at least one of a punching, embossing, and bending operation the bent segments as well as the wave peaks and wave troughs are formed, wherein in at least one of the punching, embossing, and bending steps, the disk and/or flow orifices through the disk have been punched. 12. The combustion chamber screen according to claim 1, wherein at least two wave troughs (13) are formed. 13. The combustion chamber screen according to claim 1, wherein the center (M) of the combustion chamber screen is designed as flow orifice. 14. The combustion chamber screen according to claim 1, wherein the combustion chamber screen is formed to be axially symmetric and the axis of symmetry (S) extends through the center (M) of the combustion chamber screen. 15. The combustion chamber screen according to claim 1, wherein the wave peaks (12) and/or the wave troughs (13) are formed by flanks (14.1; 14.2) arranged in V-shape. 16. The combustion chamber screen according to claim 15 wherein the flanks (14.1, 14.2) are formed to enclose an angle of from 1° to 179°. 17. A combustion chamber screen (10) for an inflator, comprising plural flow orifices (11) and bent segments, wherein the bent segments are arranged around a center (M) of the combustion chamber screen so that in the circumferential direction of the combustion chamber screen a waveform including plural wave peaks (12) and wave troughs (13) are formed, wherein the wave troughs (13) are descending starting from the center (M) toward the circumferential edge (U) of the combustion chamber screen. 18. The combustion chamber screen according to claim 17, wherein at least two wave peaks (12) are formed. 19. The combustion chamber screen according to claim 17, wherein substantially planar flanks (14.1, 14.2) arranged in a V-shape form at least one of the wave peaks (12) and the wave troughs (13). 20. The combustion chamber screen according to claim 17, wherein the height distance (A) between the wave troughs (13) and the wave peaks (12) is 4 to 8 mm, wherein the center (M) of the combustion chamber screen is located in a plane (EM) which bisects the height distance (A) between the wave troughs (13) and the wave peaks (12). 21. An inflator comprising a combustion chamber screen according to claim 17. 22. An airbag module comprising an inflator, an airbag inflatable by the inflator and a fastening group for attaching the airbag module to a vehicle, characterized in that the inflator is configured in accordance with claim 21. 23. A vehicle safety system, especially for protecting a person, for example a vehicle occupant or a pedestrian, comprising: an inflator, especially including an airbag module, and an electronic control unit by means of which the inflator can be activated when a trigger situation is provided, wherein the inflator is configured in accordance with claim 21. 24. An inflator comprising: at least one combustion chamber filled with solid propellant and having a discharge end,at least one igniter unit by which the solid propellant can be ignited andat least one combustion chamber screen according to claim 17 which is adjacent to the solid propellant at the discharge end and delimits the combustion chamber. 25. An airbag module comprising an inflator, an airbag inflatable by the inflator and a fastening group for attaching the airbag module to a vehicle, characterized in that the inflator is configured in accordance with claim 24. 26. A vehicle safety system, especially for protecting a person, for example a vehicle occupant or a pedestrian, comprising: an inflator, especially including an airbag module, and an electronic control unit by means of which the inflator can be activated when a trigger situation is provided, wherein the inflator is configured in accordance with claim 24. 27. A method of manufacturing a combustion chamber screen according to claim 17, wherein a disk is interposed between a matrix and a punch and during at least one of a punching, embossing, and bending operation the bent segments as well as the wave peaks and wave troughs are formed, wherein in at least one of the punching, embossing, and bending steps, the disk and/or flow orifices through the disk have been punched. 28. The combustion chamber screen according to claim 27, wherein the flanks (14.1, 14.2) are formed to enclose an angle of from 1° to 179°. 29. The combustion chamber screen according to claim 17, wherein at least two wave troughs (13) are formed. 30. The combustion chamber screen according to claim 17, wherein the center (M) of the combustion chamber screen is designed as flow orifice. 31. The combustion chamber screen according to claim 17, wherein the combustion chamber screen is formed to be axially symmetric and the axis of symmetry (S) extends through the center (M) of the combustion chamber screen. 32. The combustion chamber screen according to claim 17, wherein the wave peaks (12) and/or the wave troughs (13) are formed by flanks (14.1; 14.2) arranged in V-shape.
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이 특허에 인용된 특허 (20)
Carothers D. Gordon (Willowdale CAX) Martini Tibor (Toronto CAX), Air bag inflator.
Rink Karl K. ; Moore Walter A. ; Green David J. ; Mendenhall Ivan V., Airbag inflation gas generation via a dissociating material and the moderation thereof.
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