Externally controlled ignition unit with integrated electronic system for triggering a restraint system
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0762534
(2001-07-05)
|
우선권정보 |
DE-0036278 (1998-08-11) |
국제출원번호 |
PCT/EP99/05420
(1999-07-29)
|
국제공개번호 |
WO00/09964
(2000-02-24)
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발명자
/ 주소 |
- Bretfeld, Anton
- Kordel, Gerhard
- Laucht, Horst
- Caflisch, Erwin
- Baur, Richard
- Bischoff, Michael
- Fendt, Gunter
- Schwehr, Stefan
|
출원인 / 주소 |
- Dynamit Nobel GmbH Explosivstoff-und Systemtechnik, Temic Telefunken Microelectric GmbH, TRW Airbag Systems GmbH & Co., KG, Unax AG
|
대리인 / 주소 |
Antonelli, Terry, Stout & Kraus, LLP
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
9 |
초록
▼
The invention relates to an ignition unit (1) suitable for triggering an active system, such as an airbag or safety belt. The ignition unit comprises an ignition charge (7) located in a housing (2), which can be fired by means of an ignition bridge (6) positioned on a support element (5), as well as
The invention relates to an ignition unit (1) suitable for triggering an active system, such as an airbag or safety belt. The ignition unit comprises an ignition charge (7) located in a housing (2), which can be fired by means of an ignition bridge (6) positioned on a support element (5), as well as at least one contact pin (13a, 13b, 13c) which protrudes from the housing (2) and via an electronic ignition system (9) is electrically connected to the ignition bridge (6). The electronic ignition system (9) is surrounded by an envelope (10) made of a shock-absorbing material. The ignition bridge (6) is not covered by the envelope (10) so that during ignition the pressure exerted on the electronic ignition system (9) is cushioned. This prevents damage to the sensitive electronic components of the electronic ignition system (9) situated on the support element (5).
대표청구항
▼
1. Ignition unit for triggering an active system, in particular a restraint system, comprising an ignition charge that is disposed in a housing and is partly surrounded by a housing insert, a support element that is disposed in the housing and on which are disposed an ignition bridge for ignitin
1. Ignition unit for triggering an active system, in particular a restraint system, comprising an ignition charge that is disposed in a housing and is partly surrounded by a housing insert, a support element that is disposed in the housing and on which are disposed an ignition bridge for igniting the ignition charge and an electronic ignition system connected to the ignition bridge, and at least one contact pin that is electrically connected to the electronic ignition system and that is led out of the housing, characterized in that the support element and the electronic ignition system are at least partly covered with shock-absorbing material that reduces impact acting on the electronic ignition system during ignition. 2. Ignition unit according to claim 1, characterized in that the support element and the electronic ignition system are surrounded by an envelope made of a shock-absorbing material, which envelope essentially leaves only the ignition bridge exposed. 3. Ignition unit for triggering an active system, in particular a restraint system, comprising an ignition charge that is disposed in a housing and is partly surrounded by a housing insert, a support element that is disposed in the housing and on which are disposed an ignition bridge for igniting the ignition charge and an electronic ignition system connected to the ignition bridge, and at least one contact pin that is electrically connected to the electronic ignition system and that is led out of the housing, characterized in that the support element and the electronic ignition system are at least partly embedded in an envelope made of a shock-absorbing material, which envelope essentially leaves only the ignition bridge exposed, the cushioning properties of the housing insert being different from those of the envelope so that the envelope reduces impact acting on the electronic ignition system during ignition so as to maintain serviceability of the electronic ignition system even after triggering. 4. Ignition unit according to claim 2, characterized in that the envelope is composed of a harder material than the housing insert. 5. Ignition unit according to claim 1, characterized in that the support element has a predetermined breaking point, wherein no components of the electronic ignition system are disposed in the region of the predetermined breaking point. 6. Ignition unit according to claim 1, characterized in that the support element has contact elements and can be displaced with the contact elements along the contact pins. 7. Ignition unit according to claim 1, characterized in that the support element or the electronic ignition system is connected to the contact pins via flexible electrical conductors. 8. Ignition unit according to claim 1, characterized in that the electronic ignition system contains a communication section for operating the ignition unit on a bus system. 9. Ignition unit according to claim 1, characterized in that the shock-absorbing material is plastic. 10. Ignition unit according to claim 9, characterized in that the plastic is selected from the group consisting of thermoplastic resin, rubber and fibre material. 11. Ignition unit according to claim 9, characterized in that the support element and the electronic ignition system are surrounded by an envelope made of a shock-absorbing material, which envelope leaves the ignition bridge exposed.
이 특허에 인용된 특허 (9)
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Evans John Harold (Landsdale PA), Airbag igniter and method of manufacture.
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Little ; II David J. (Collegeville PA), Airbag igniter having double glass seal.
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Whang David S., Bridgewire initiator.
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Avory Mark Lucas ; Fahey William David ; Fields Stewart Shannon ; Moore ; Jr. Charles Joyce ; Piper ; III Charles John ; Whang David, Electrical initiator.
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Duguet Jean-Rene,FRX ; Vedel Jean-Pierre,FRX, Electro-pyrotechnic initiation system protected against electrostatic discharges.
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Duguet Jean-Rene (Orry La Ville FRX), Electro-pyrotechnical initiator.
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Duguet Jean-Rene,FRX ; Martin Nicolas,FRX, Electropyrotechnic igniter with enhanced ignition reliability.
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Monk David B. (Kaysville UT) Woodbury Mark B. (North Salt Lake UT) Hansen David D. (Clearfield UT), Inflator initiator with zener diode electrostatic discharge protection.
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Jean-Rene Duguet FR, Photoetched-filament pyrotechnic initiator protected against electrostatic discharges.
이 특허를 인용한 특허 (6)
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Dürschinger, Günter; Dürschinger, Elisabeth, Detonator for passenger restraint systems.
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Gaudinat, François; Le Gallic, Yann, Electropyrotechnic initiator.
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Rice, Brett, Explosive foil initiator and method of making.
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Fink, Thomas; Pfeiffer, Thomas, Initiation device.
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Reynolds, Richard K.; Nance, Christopher J.; Cunningham, Andrew F., Plastic encapsulated energetic material initiation device.
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Matsuda,Kazuo; Saito,Kazutaka; Miyake,Etsuya; Nishimura,Junichi; Aida,Hiromi, Squib.
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