Firing apparatus for a pyrotechnic protection apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42C-019/02
F42C-019/06
출원번호
US-0516799
(2007-11-27)
등록번호
US-8205554
(2012-06-26)
우선권정보
DE-10 2006 056 077 (2006-11-28)
국제출원번호
PCT/EP2007/010280
(2007-11-27)
§371/§102 date
20091123
(20091123)
국제공개번호
WO2008/064858
(2008-06-05)
발명자
/ 주소
Fink, Thomas
출원인 / 주소
Schott AG
대리인 / 주소
Pitts & Lake, P.C.
인용정보
피인용 횟수 :
6인용 특허 :
10
초록▼
The invention relates to an apparatus, in particular a firing apparatus (1) for a pyrotechnic protection apparatus, in particular an airbag or belt pretensioner, comprising: a power leadthrough, in particular a metal fixing material leadthrough (2), comprising a base body (8) which is provided with
The invention relates to an apparatus, in particular a firing apparatus (1) for a pyrotechnic protection apparatus, in particular an airbag or belt pretensioner, comprising: a power leadthrough, in particular a metal fixing material leadthrough (2), comprising a base body (8) which is provided with a passage opening (7), and at least one metal pin (6) which is arranged in the passage opening (7) in the base body (8) in a fixing material (6); a housing part (19, 4) which at least partially accommodates the power leadthrough so as to form a space for accommodating a propellant charge (5); a casing (22) which at least partially surrounds the power leadthrough (2), the metal pin (6) and the housing part (19, 4); wherein the base body (8) has a thickness D in the range of from 2.0 mm to 0.1 mm, preferably in the range of from less than 1.0 mm to 0.1 mm, in particular less than 0.8 mm to 0.5 mm, and means (27) are provided on the metal pin (6) in such a way that the casing (22) engages with the metal pin, wherein the casing and the base body together absorb a pull-out force of the metal pin which is greater than 150 N, in particular greater than 165 N, preferably greater than 200 N, in particular greater than 250 N, in particular greater than 300 N.
대표청구항▼
1. A firing apparatus for a pyrotechnic protection apparatus, particularly an airbag or belt pretensioner, comprising: a power leadthrough, particularly a metal fixing material leadthrough comprising a base body equipped with a passage opening, and at least one metal pin being arranged in the passag
1. A firing apparatus for a pyrotechnic protection apparatus, particularly an airbag or belt pretensioner, comprising: a power leadthrough, particularly a metal fixing material leadthrough comprising a base body equipped with a passage opening, and at least one metal pin being arranged in the passage opening in the base body in a fixing material;a housing part, including a cap, at least partially accommodating the power leadthrough while forming an intermediate space for accommodating a propellant charge;a casing which at least partially surrounds the power leadthrough, the metal pin, and the housing part; whereinthe base body has a thickness in the range of 1.0 mm to 0.1 mm, and provides a hermetic seal with the housing part which accommodates the propellant charge, andmeans are provided on the metal pin such that the casing is engaged with the metal pin, whereinthe casing and the base body together absorb a pull-out force of the metal pin which is greater than 150 N, and the casing protects the base body against bending during firing. 2. The firing apparatus according to claim 1, characterized in that the means are provided at least in a partial region of the extension of the metal pin in the casing. 3. The firing apparatus according to claim 1, characterized in that the means are formed by ridges or grooves extending about the outer circumference of the metal pin, wherein the ridges or grooves extend at an angle to the longitudinal axis of the metal pin. 4. The firing apparatus according to claim 1, characterized in that the means comprise an outer thread being arranged on the outer circumference of the metal pin. 5. The firing apparatus according to claim 1, characterized in that the means comprise material constrictions and pinching provided on the outer circumference of the metal pin. 6. The firing apparatus according to claim 1, characterized in that the means comprise at least one projection being arranged on the outer circumference of the metal pin and being aligned in radial direction. 7. The firing apparatus according to claim 1, characterized in that at least two metal pins are provided. 8. The firing apparatus according to claim 7, characterized in that the second metal pin is placed on mass as the mass pin on the rear side of the base body. 9. The firing apparatus according to claim 1, characterized in that a metal pin is provided which is arranged in a passage opening in the base body in a fixing material, and a bushing of the base body being placed on mass. 10. The firing apparatus according to claim 1, characterized in that the casing is made of a plastic, a fiberglass reinforced plastic, a glass powder in a polymer matrix, particularly a polyamide, particularly nylon. 11. The firing apparatus according to claim 1, characterized in that the base body has a front side and a rear side directed toward the propellant charge, and means for preventing a relative movement between the individual elements of the power leadthrough. 12. The firing apparatus according to claim 1, characterized in that the base body is a metal part, wherein the outer contour of the metal part and/or of the passage opening of the base body is obtained by means of a stamping process. 13. The firing apparatus according to claim 12, characterized by the following features: the passage opening is characterized by two partial regions - one partial region extending from the rear side in the direction of the front side, and a further partial region extending from the front side in the direction of the rear side;the projection is formed by the first partial region extending from the rear side in the direction of the front side, and which is characterized by smaller interior dimensions than the further partial region;both partial regions have a continuous geometry across the length thereof, having constant interior dimensions in the partial regions. 14. The firing apparatus according to claim 12, characterized by the following features: the passage opening is characterized by two partial regions - one partial region extending from the rear side in the direction of the front side, and a further partial region extending from the front side in the direction of the rear side;the projection is formed by the first partial region extending from the rear side in the direction of the front side, and which is characterized by smaller interior dimensions than the further partial region;both partial regions have a continuous geometry across the length thereof, and/or having constant interior dimensions in the partial regions. 15. The firing apparatus according to claim 1, characterized in that the housing part, particularly the cap, is hermetically sealed to the power leadthrough. 16. The firing apparatus according to claim 15, characterized in that the housing part, particularly the cap is hermetically sealed to the base body of the power leadthrough by means of welding. 17. A method for the production of a metal fixing material leadthrough for a pyrotechnic protection apparatus, particularly an airbag or a belt pretensioner, comprising the following steps: producing a base body having a thickness in the range of 1.0 mm to 0.1 mm, the base body defining a passage opening;fixing a metal pin in the passage opening in a fixing material resulting in a power leadthrough;inserting a bridge wire;hermetically sealing a housing part accommodating pyrotechnic material to the base body; andat least partially surrounding the housing part, the power leadthrough, and the metal pin with a casing to produce a metal fixing material leadthrough for a pyrotechnic protection apparatus wherein the casing and the base body absorb a pull-out force of the metal pin greater than 150 N, and the casing protects the base body against bending during firing. 18. The method according to claim 17, characterized by forming the passage opening is produced in the base body by means of a stamping operation. 19. The method according to claim 17, characterized by securing the metal pin to the fixing material and to the base body by means of heating. 20. The method according to claim 17, characterized by securing the casing to the housing part, the power leadthrough, and the metal pin by means of heating.
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이 특허에 인용된 특허 (10)
Lee John T. M. (Phoenixville PA), Electric initiator.
Avory Mark Lucas (Foster City CA) Fahey William David (Cupertino CA) Fields Stewart Shannon (Redwood City CA) Moore ; Jr. Charles Joyce (Redwood Shores CA) Piper ; III Charles John (Pleasant Hill CA), Electrical initiator.
Avory Mark Lucas ; Fahey William David ; Fields Stewart Shannon ; Moore ; Jr. Charles Joyce ; Piper ; III Charles John ; Whang David, Electrical initiator.
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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