IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0098616
(2008-04-07)
|
등록번호 |
US-8327765
(2012-12-11)
|
우선권정보 |
DE-203 03 413 (2003-03-03); DE-103 21 067 (2003-03-10); DE-103 26 253 (2003-06-11); DE-203 14 580 (2003-09-20); DE-10 2006 004 036 (2006-01-27) |
발명자
/ 주소 |
- Fink, Thomas
- Heeke, Neil
- Olzinger, Adolf
- Pfeiffer, Thomas
- Ranftl, Reinhard
- Bender, Richard
- Forster, Bartholomäus
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
32 |
초록
▼
A glass-to-metal bushing for ignitors of airbags or belt tensioning pulleys. A metal pin is arranged in a slot in the base plate in the fixing material, the base plate being formed by one element whereby the base geometry describing the slot is produced by at least one separation process. Structure
A glass-to-metal bushing for ignitors of airbags or belt tensioning pulleys. A metal pin is arranged in a slot in the base plate in the fixing material, the base plate being formed by one element whereby the base geometry describing the slot is produced by at least one separation process. Structure is provided between the front and rear of the base plate for preventing relative motion of the fixing material in the direction of the base plate rear portion across from the inner circumference of the slot.
대표청구항
▼
1. A bushing assembly for igniters for airbags or belt tensioning pulleys, comprising: a metal base plate having a front side, a rear side and an opening extending therethrough from the front side to the rear side, said base plate having a thickness of between 1.5 and 3.5 mm, and said opening having
1. A bushing assembly for igniters for airbags or belt tensioning pulleys, comprising: a metal base plate having a front side, a rear side and an opening extending therethrough from the front side to the rear side, said base plate having a thickness of between 1.5 and 3.5 mm, and said opening having a maximum diameter in a range of between and including 1.8 to 4 mm;a metal pin disposed in said opening and a fixing material disposed in the opening around and between the pin and the base plate, said fixing material forming a plug;the base plate being formed by one element, wherein the base plate has a stamped or punched base geometry defining the opening and having an edge with a tear from stamping or punching;the base plate including a retention structure forming an undercut located between the front and rear sides for preventing relative motion of the fixing material in a direction from front to rear across an inner circumference of the opening;said fixing material being a glass plug formed from molten glass, the glass plug including an end which is substantially level with the front side of the base plate. 2. A bushing assembly according to claim 1, wherein the undercut is formed in a wall of the base plate forming the opening creating a first sub-area of the opening having a first diameter and a second sub-area of the opening having a second diameter smaller than the first diameter, the second sub-area being rearwardly of the first sub-area. 3. A bushing assembly according to claim 2, wherein the first sub-area has a reducing inner dimension starting from the front side to the second sub-area. 4. A bushing assembly according to claim 2, wherein the second sub-area extends to the rear side of the base plate. 5. A bushing assembly according to claim 2, wherein the undercut is centrally arranged. 6. A bushing assembly according to claim 1, wherein the base plate is made of stainless steel. 7. A bushing assembly according to claim 1, wherein the thickness of said base plate from said front side to said rear side ranges from approximately 1.8 mm to approximately 3.0 mm. 8. A bushing assembly according to claim 1, wherein said base plate is configured such that a ratio of the thickness of said base plate to a maximum dimension of said opening vertical to an axis direction of said opening is in a range of between and including approximately 0.8 to 1.6. 9. A bushing assembly according to claim 1, wherein a contour describing a final geometry of the base plate is produced by the stamping or punching process. 10. A bushing assembly according to claim 1, wherein the retention structure is a unitary component of the base plate. 11. The bushing assembly according to claim 1, comprising at least two metal pins in parallel arrangement to each other. 12. A bushing assembly according to claim 1, wherein the metal pin is firmly connected with the fixing material. 13. A bushing assembly according to claim 12, wherein the metal pin is sealed with the fixing material. 14. A bushing assembly according to claim 1, wherein the opening exhibits a circular cross section and at least the first sub-area is tapered. 15. A bushing assembly according to claim 1, wherein the opening exhibits a circular cross section. 16. A bushing assembly according to claim 1, wherein the base plate is formed as a stamped metal part. 17. A bushing assembly according to claim 16, wherein the stamped metal part is polished. 18. A bushing assembly according to claim 1, wherein the retention structure comprises at least one positive connection between the fixing material plug and a part of the opening. 19. A bushing assembly according to claim 1, wherein the retention structure comprises an element inserted in the opening and the inner circumference of the opening and/or the outer circumference of the element exhibits a roughness of ≧10 μm. 20. The bushing assembly according to claim 1, wherein at least two metal pins are provided. 21. A bushing assembly according to claim 20, wherein one of the pins is grounded to the rear side of the base plate. 22. A bushing assembly according to claim 1, including a socket in the base plate which is grounded. 23. A bushing assembly for igniters for airbags or belt tensioning pulleys, comprising: a metal base plate having a front side, a rear side and an opening extending therethrough from the front side to the rear side, the thickness of the base plate being between 1.8 mm and 3.0 mm, the base plate being configured such that a ratio of the thickness of the base plate to a maximum dimension of the opening vertical to an axis direction of the opening is in a range of between and including approximately 0.8 to 1.6;a metal pin disposed in said opening and a fixing material disposed in the opening around and between the pin and the base plate, said fixing material forming a plug; andan ignition bridge extending between and electrically connecting said pin and said base plate, said ignition bridge being positioned adjacent to the front side of said base plate;the base plate being formed by one element, wherein the base plate has a stamped or punched base geometry defining the opening and having an edge with a tear from stamping or punching;the base plate including a retention structure forming an undercut located between the front and rear sides for preventing relative motion of the fixing material in a direction from front to rear across an inner circumference of the opening;said fixing material being a glass plug formed from molten glass, the glass plug including an end which is substantially level with the front side of the base plate. 24. A bushing assembly for igniters for airbags or belt tensioning pulleys, comprising: a metal base plate having a front side, a rear side and an opening extending therethrough from the front side to the rear side, said base plate having a thickness of between 1.5 to 3.5 mm, and said opening having a maximum diameter in a range of between and including 1.4 to 4 mm;a metal pin disposed in said opening and a fixing material disposed in the opening around and between the pin and the base plate, said fixing material forming a plug; andan ignition bridge extending between and electrically connecting said pin and said base plate, said ignition bridge being positioned adjacent to the front side of said base plate;the base plate being formed by one element, wherein the base plate has a stamped or punched base geometry defining the opening and having an edge with a tear from stamping or punching;the base plate including a retention structure forming an undercut located between the front and rear sides for preventing relative motion of the fixing material in a direction from front to rear across an inner circumference of the opening;said fixing material being a glass plug formed from molten glass, the glass plug including an end which is substantially level with the front side of the base plate.
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