IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0909737
(2004-07-30)
|
우선권정보 |
DE-103 36 776(2003-08-08) |
발명자
/ 주소 |
- Krach,Martin
- Enzelberger,Reinhard
|
출원인 / 주소 |
- Alfmeier Prazision AG Baugruppen und Systemlosungen
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
The invention concerns a filling fitting for a fuel tank of a motor vehicle having an automatic tank closure. The filling fitting includes a carrier with an inlet opening and a closure cover, which closes the inlet opening with a sealing element. An upper side of the closure cover has a closure comp
The invention concerns a filling fitting for a fuel tank of a motor vehicle having an automatic tank closure. The filling fitting includes a carrier with an inlet opening and a closure cover, which closes the inlet opening with a sealing element. An upper side of the closure cover has a closure component, which, in a closed position of the closure cover, penetrates the inlet opening. Above the carrier is a circumferential section placed directly or indirectly on a supporting closure ring. The section extends inward to coact with closure elements on the closure component in the manner of a screw drive. To prevent permeation, in a force transmission path between the sealing element of the closure cover and the carrier, at least one axial, effective spring element is inserted.
대표청구항
▼
The invention claimed is: 1. A filling fitting formation for a fuel tank of a motor vehicle having an automatic tank closure, the filling fitting formation comprising: a fuel tank carrier with a transverse wall affixed thereto having an inlet opening therethrough for penetration of a fuel nozzle;
The invention claimed is: 1. A filling fitting formation for a fuel tank of a motor vehicle having an automatic tank closure, the filling fitting formation comprising: a fuel tank carrier with a transverse wall affixed thereto having an inlet opening therethrough for penetration of a fuel nozzle; a closure cover pivotally carried on an axle disposed transverse to a central longitudinal axis of the inlet opening, a sealing element disposed on the closure cover coacting with a sealing element seat, which is formed by an opening rim of the transverse wall; a closure component disposed proximate the closure cover, the closure component in a closed state of the closure cover penetrating the inlet opening with an axial section having a plurality of closure elements projecting radially therefrom; and a closure ring disposed above the transverse wall the closure ring defining an inner circumferential section depending inwardly to coact with the closure elements, such that in a first rotational station of the closure ring, the inner circumferential section escapes engagement with the closure elements and in a second rotational station, the inner circumferential section contacts the closure elements from below, whereby the sealing element is pressed by an axial acting force on an underside of the transverse wall, the axial acting force generated by a spring element disposed in a force transmission path between the sealing element of the closure cover and the transverse wall. 2. A filling fitting in accord with claim 1, wherein the sealing element defines a lip projecting from an upper side of the sealing element for coaction with the sealing seat. 3. A filling fitting in accord with claim 1, wherein the spring element between the closure ring and the transverse wall is stressed in the closed state. 4. A filling fitting in accord with claim 3, wherein the spring element is a helical spring. 5. A filling fitting in accord with claim 3, further comprising a slide ring with a plane level extending transverse to the longitudinal axis of the inlet opening, the ring disposed between the spring element and the closure ring. 6. A filling fitting in accord with claim 5, wherein the slide ring is disposed in a ring space between an axial section of the closure ring and a wall of the carrier surrounding the closure ring. 7. A filling fitting in accord with claim 6, wherein the slide ring defines an inverted U-shape in profile. 8. A filling fitting in accord with claim 3, wherein the closure component is bowl shaped in cross-section with an opening directed downward, the closure component having a sidewall set upon and affixed to a cylindrical projection extending from an upper side of the closure cover and penetrating through a central opening of the sealing element. 9. A filling fitting in accord with claim 8, wherein the side wall carries a radially projecting flange overlaying an inner edge area of the sealing element. 10. A filling fitting in accord with claim 1 wherein the closure component and a spring element are placed on an outside of the closure cover such that the closure component is axially movable and is pressed urged by the spring element against the upper side of the closure cover. 11. A filling fitting in accord with claim 10, wherein the closure component is a tube section, the closure elements disposed thereon such that the spring element is compressibly inserted between a first support flange projecting radially inward from an under end of the closure component and a second support flange affixed on the closure cover. 12. A filling fitting in accord with claim 11, further comprising a guide shell affixed to the closure cover to prevent rotation or axial movement, the second support flange disposed on the guide shell, a circumferential wall of the guide shell coaxially embracing an axial section of the closure component, the guide shell having axial slots penetrated by the closing elements of the closure component. 13. A filling fitting in accord with claim 12, wherein the axial slots open on an under face of the guide shell. 14. A filling fitting in accord with claim 12 wherein the guide shell is affixed on a bolt to avoid rotation or axial movement, the bolt projecting from the upper side of the closure cover. 15. A filling fitting in accord with claim 14, wherein between the under end of the guide shell and the upper side of the closure cover an effective shape-fit is created in a direction of rotation. 16. A filling fitting in accord with claim 15, wherein the under face of the guide shell defines recesses spaced apart and engagable by complementary projections on the upper side of the closure cover. 17. A filling fitting in accord with claim 10, wherein the spring element is a helical spring. 18. A fuel fitting for a fuel tank having an automatic tank closure, the filling fitting comprising: a carrier having a fuel inlet opening therein; a closure ring disposed proximate the fuel opening, the closure ring defining a run-on section therein; a closure component defining a plurality of closure elements depending therefrom and urged by a first spring element away from the fuel inlet opening and the run-on section in an open condition; and a closure cover urged against the carrier in the closed condition by a second spring element, the closure component urged into opposing rotational engagement with the run-on section to close the cover. 19. The fuel fitting as in claim 18, wherein the carrier defines a wall disposed about the fuel opening, the wall configured for positioning the closure ring and selective receipt of the closure elements in an open condition. 20. The fuel fitting as in claim 19, wherein the wall defines respective openings therein for receipt of the closure elements. 21. The fuel fitting as in claim 18, wherein the run-on section of the closure ring defines a ramp terminating in a gap for passage of one of the closure elements. 22. The fuel fitting as in claim 18, wherein the first spring element urges the closure elements along the run-on section in a screw-like direction and opens the closure cover in the open condition. 23. The fuel fitting as in claim 18, wherein the second spring element urges the closure cover to close and urges the closure elements toward the fuel inlet opening in the closed condition. 24. The fuel fitting as in claim 18, wherein the closure cover defines a sealing element thereon. 25. The fuel fitting as in claim 24, wherein the sealing element defines a plurality of lips depending therefrom, at least one lip slanting away from at least one other lip. 26. The fuel fitting as in claim 18, further comprising a guide shell disposed about the closure component, the first spring element compressibly disposed between the guide shell and the closure component. 27. The fuel fitting as in claim 26, wherein the guide shell defines a plurality of ends depending therefrom, and wherein the closure cover defines a plurality of wall sections depending therefrom, the ends disposed adjacent respective wall sections and configured to prevent rotation of the guide shell on the closure cover. 28. The fuel fitting as in claim 18, further comprising an extended section disposed about the carrier, the cover defining an opening therethrough for access to the closure component to open the fuel opening.
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