Screw connection device for fluid lines, in particular for motor vehicle fluid lines
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16L-015/08
F16L-019/00
F16L-019/02
F16L-019/028
B60T-017/04
F02M-055/00
출원번호
US-0077914
(2013-11-12)
등록번호
US-9702488
(2017-07-11)
우선권정보
DE-20 2012 104 347 U (2012-11-12)
발명자
/ 주소
Stahn, Andreas
Fiedler, Uwe
Oezbenlikan, Uenal
출원인 / 주소
TI Automotive (Heidelberg) GmbH
대리인 / 주소
Brinks Gilson & Lione
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
A screw connection device for fluid lines having a coupling nut with an interior space and having an internal threading running over the circumference of the interior space, as well as having a connecting element with an external threading. A line end of a fluid line is accommodated in the coupling
A screw connection device for fluid lines having a coupling nut with an interior space and having an internal threading running over the circumference of the interior space, as well as having a connecting element with an external threading. A line end of a fluid line is accommodated in the coupling nut, wherein the line end exhibits an end shape. When the internal threading of the coupling nut is screwed to the external threading of the connecting element, a locating surface disposed in the interior space of the coupling nut is moved toward the back end of the end shape, or vice versa, respectively. A spring element is disposed between the locating surface and the back end of the end shape, running over the circumference of the fluid line.
대표청구항▼
1. A screw connection device for fluid lines, extending along a longitudinal axis (L) having a coupling nut with an internal wall having a thread thereon, said screw connection device having a connecting element with a mating external thread thereon, wherein the coupling nut is accommodated on a lin
1. A screw connection device for fluid lines, extending along a longitudinal axis (L) having a coupling nut with an internal wall having a thread thereon, said screw connection device having a connecting element with a mating external thread thereon, wherein the coupling nut is accommodated on a line end of a fluid line and, wherein the line end includes an end shape at a front end thereof, comprising a line flange, including a back end, wherein the line flange is a flaring of the fluid line,wherein, a conical locating surface of the coupling nut is disposed in the interior space of the coupling nut and is movable toward the back end of said line flange of said fluid line,and wherein a spring element is disposed on said fluid line between the conical locating surface of said coupling nut and the back end of said line flange, wherein the spring element is a single piece and comprises a stop section and a connecting section following each other in an axial direction, said stop section having a locating surface contacting said back end of said line flange and a locating surface contacting said conical locating surface of said coupling nut, said stop section being compressed between said back end of said line flange and said conical locating surface of said coupling nut, wherein both locating surfaces of the stop section are shaped conically, wherein the connecting section has an inner cylindrical surface and an outer cylindrical surface,wherein the spring element comprisesa first end that belongs to the stop section and a second outermost axial end that belongs to the connecting section and wherein the second outermost axial end is substantially perpendicular with the inner and outer cylindrical surfaces of the connecting section, wherein the second outermost axial end of the spring element is completely contained within and directly abuts the coupling nut in an axial direction in a screwed-together state. 2. The screw connection device according to claim 1, wherein the connecting element is a connecting line. 3. The screw connection device according to claim 1, wherein the end shape of the line end rests with a connecting surface against a complementary connecting surface of the connecting element when the screw connection device is in the screwed together state. 4. The screw connection device according to claim 1, wherein the conical locating surface of the coupling nut comes in contact with the spring element during movement of said conical locating surface of said coupling nut toward the back end of said line flange, and the spring element comes in contact with the back end of the end shape, such that the spring element is clamped, respectively, in the space between the conical locating surface and the back end of the end shape. 5. The screw connection device according to claim 4, wherein the spring element is deformed in the course of said movement. 6. The screw connection device according to claim 1, wherein the spring element consists of metal. 7. The screw connection device according to claim 1, wherein the conical locating surface of the coupling nut is disposed at an angle to the longitudinal axis (L) of the fluid line, and wherein the conical locating surface of the coupling nut forms an angle (α) with the longitudinal axis (L) of the fluid line of 10°-170°. 8. The screw connection device according to claim 7, wherein the locating surface of the spring element contacting the conical locating surface of the coupling nut is disposed at an angle to the longitudinal axis (L) of the fluid line, and wherein, said locating surface of the spring element contacting the conical locating surface of the coupling nut forms an angle (α1) with the longitudinal axis (L) of the fluid line of 10°-170°. 9. The screw connection device according to claim 8, wherein the locating surface of the spring element contacting said back end of said line flange is disposed at an angle to the longitudinal axis (L) of the fluid line, and wherein, said locating surface of the spring element contacting said back end of said line flange forms an angle (α2) with the longitudinal axis (L) of the fluid line of 10°-170°. 10. The screw connection device according to claim 9, wherein the end shape of the fluid line at the back end of the line flange is disposed at an angle to the longitudinal axis (L) of the fluid line, and forms an angle (α3) with the longitudinal axis (L) of the fluid line of 10°-170°. 11. The screw connection device according to claim 1, wherein the conical locating surface of the coupling nut is a component of a stop shoulder of the coupling nut, and wherein a connecting surface angled away from the conical locating surface is connected to the conical locating surface, and wherein the connecting surface is disposed parallel to the longitudinal axis (L) of the fluid line. 12. The screw connection device according to claim 1, wherein the fluid line passes through a center hole of the coupling nut, and wherein the conincal locating surface of the coupling nut abuts, or is connected to, the center hole. 13. The screw connection device according to claim 1, wherein the locating surface of the spring element contacting said back end of said line flange is provided with a coating having a friction coefficient (μ) which prevents occurrence of disadvantageous torsional forces. 14. A screw connection device for fluid lines, extending along a longitudinal axis (L), the screw connection device comprising: a coupling nut with an internal wall having a thread thereon,a connecting element with a mating external thread thereon,a line end of a fluid line, wherein the coupling nut is accommodated on the line end,an end shape of the line end disposed at a front end of the line end, the end shape comprising a line flange including a back end, wherein the line flange is a flaring of the fluid line,a conical nut locating surface of the coupling nut, wherein the conincal nut locating surface of the coupling nut is disposed in the interior space of the coupling nut and is movable toward the back end of the line flange of the end shape of the fluid line,a spring element disposed on the fluid line between the concial nut locating surface of the coupling nut and the back end of the line flange,wherein the spring element includes a first spring locating surface contacting the back end of the line flange and a second spring locating surface contacting the conical nut locating surface of the coupling nut,wherein the spring element is compressed between the back end of the line flange and the conincal nut locating surface of said coupling nut,wherein the spring element is a single-piece and includes a stop section and a connecting section following each other in an axial direction, the connecting section angled away from the stop section, the stop section includes the second spring locating surface that contacts the conical nut locating surface and the first spring locating surface that contacts the back end of the line flange of the end shape, wherein the first and second spring locating surfaces are shaped conically, andwherein the connecting section is disposed parallel to the longitudinal axis (L) of the fluid line and the connecting section includes an inner cylindrical surface and an outer cylindrical surface, and the stop section is disposed at an angle transverse to the longitudinal axis (L),wherein the spring element comprisesa first end that belongs to the stop section and a second outermost axial end that belongs to the connecting section and wherein the second outermost axial end is substantially perpendicular with the inner and outer cylindrical surfaces of the connecting section, wherein the second outermost axial end of the spring element is completely contained within and directly abuts the coupling nut in an axial direction in a screwed-together state. 15. The screw connection device according to claim 14, wherein the coupling nut defines a connecting surface angled away from the conical nut locating surface of the coupling nut and is connected to the conical nut locating surface, wherein the connecting surface is disposed parallel to the longitudinal axis (L) of the fluid line, the connecting section of the spring element is disposed radially between the fluid line and the connecting surface of the coupling nut and contacts the fluid line and the connecting surface of the coupling nut, and the stop section of the spring element is disposed between the conincal nut locating surface of the coupling nut and the back end of the line flange and contacts the conical nut locating surface of the coupling nut and the back end of the line flange.
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