IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0034802
(2011-02-25)
|
등록번호 |
US-8667887
(2014-03-11)
|
우선권정보 |
DE-10 2010 002 621 (2010-03-05) |
발명자
/ 주소 |
- Wiedenmann, Willi
- Mannl, Stephan
- Sauer, Martin
|
출원인 / 주소 |
|
대리인 / 주소 |
Marshall, Gerstein & Borun LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
11 |
초록
▼
An actuator for a rotary function element, having a housing with at least one pressure means supply and being closed at both sides by a cover, in which housing a piston is guided to reciprocate in a sealing manner, the piston containing diametrically opposed, convolution-like connecting links for a
An actuator for a rotary function element, having a housing with at least one pressure means supply and being closed at both sides by a cover, in which housing a piston is guided to reciprocate in a sealing manner, the piston containing diametrically opposed, convolution-like connecting links for a transverse axis of an actuator shaft rotatably mounted in one cover, and having two guide rods firmly anchored in the housing only at one end and engaging into guides in the piston, with the one guide rod anchored in one cover, whereas the other guide rod is anchored in the other cover, and the two guides end blind in the piston in opposite directions.
대표청구항
▼
1. Actuator (A) for a rotating function element (G), in a closing element of a disk valve or a ball valve (V), comprising a housing having at least one pressure means supply and being closed at each of two opposite ends by respective covers, in which housing a piston is guided to reciprocate in a se
1. Actuator (A) for a rotating function element (G), in a closing element of a disk valve or a ball valve (V), comprising a housing having at least one pressure means supply and being closed at each of two opposite ends by respective covers, in which housing a piston is guided to reciprocate in a sealing manner, which contains diametrically opposed, convolution-like connecting links for a transverse axis of an actuator shaft rotatably mounted in a cover, submerging into the piston and rotatably driven by the piston with torques in opposite directions, and having two parallel guide rods each firmly anchored in the housing only at one end, which engage in guides extending in the direction of stroke and ending blind within the piston stroke, with one of the guide rods being anchored in the cover at one of the ends of the housing and the other guide rod being anchored in the other cover, and wherein the two guides end blind in the piston in opposite directions. 2. Actuator according to claim 1, wherein the free ends of the two guide rods overlap in the direction of stroke. 3. Actuator according to claim 1, wherein the free effective bending length (ya, yb) provided in the respective piston end position of only one guide rod amounts to one of between approximately half to nearly two thirds of the piston's outer diameter, and approximately twice the overlap of the free ends of the two guide rods. 4. Actuator according to claim 1, wherein the sum of the guide lengths (xa, xb) of both guide rods in the guides is constant over the piston stroke independent of the direction of the reaction torque at the piston or the direction of stroke of the piston. 5. Actuator according to claim 1, wherein the guide rods are placed with respect to the piston axis axially symmetrically and diametrically opposed in the covers. 6. Actuator according to claim 1, wherein the piston comprises a piston plate and a piston skirt containing the connecting links and the guides, one guide having its open mouth in the piston plate and its blind end in the piston skirt, and the other guide having its open mouth in the piston skirt and its blind end in the piston plate. 7. Actuator according to claim 1, wherein the piston can be subjected in one direction of stroke to the pressure means supply against a readjusting spring, and in the other direction of stroke to the readjusting spring, and/or that the piston can be subjected from both sides to pressure means supplies disposed in the housing at opposed sides. 8. Actuator according to claim 1, wherein each connecting link comprises in starting regions different but greater angles of slope (W1, W3)—with respect to a radial plane perpendicularly going through the piston axis—than the angle of slope (W2) in an intermediate region between the starting regions. 9. Actuator according to claim 8, wherein the angles of slope (W1, W3) in the starting regions differ by about 2% to 10%, and that the angle of slope (W2) in the intermediate region amounts to about 60% of the angles of slope (W1, W3). 10. Actuator according to claim 9, wherein the greatest angle of slope (W1) is provided in the starting region in which in the stroke end position of the piston with the lowest force of the readjusting spring, the transverse axis engages. 11. Actuator according to claim 1, wherein the piston is made of high-density polyamide. 12. Actuator according to claim 1, wherein each cover comprises a mounting for a guide rod end which is either depressed or pin-shaped, and that the guide rods are inserted into the mountings or placed onto the mountings and one of welded, screwed, shrunk, glued or calked. 13. Actuator according to claim 12, wherein the respective guide rod is anchored in or on the mounting of the cover by friction welding. 14. Actuator according to claim 1, wherein at least the guide rods consist of a steel of specification 1.4301 or a metal alloy comparable to this specification. 15. Actuator according to claim 1, wherein the guide rods are equally dimensioned, circular cylindrical solid material rods or tubes and the guides are blind holes. 16. Actuator according to claim 2, wherein the overlap approximately corresponds to one third of the piston's outer diameter. 17. Actuator according to claim 4, wherein the sum of the free effective bending lengths of both guide rods in the guides is constant over the piston stroke independent of the direction of the reaction torque at the piston or the direction of stroke of the piston. 18. Actuator according to claim 8, and wherein the torques transmitted from the actuator shaft to the function element (G) by the engagement of the transverse axis in the starting regions at least approximately have the same maxima (Mmax), independent of the action of pressure means or the readjusting spring on the piston. 19. Actuator according to claim 9, and wherein the angles of slope (W1, W3) in the starting regions differ by about 5%. 20. Actuator according to claim 9, and where the angle of slope (W1) amounts to about 66°, the angle of slope (W2) amounts to one of approximately 40° or 38.9°, and the angle of slope (W3) amounts to about 63°. 21. Actuator according to claim 11, wherein the high-density polyamide is without fiber reinforcement. 22. Actuator according to claim 13, wherein the friction welding is automated friction welding. 23. Actuator according to claim 13, wherein the friction welding is at the front side and the outer or inner periphery, in a welding region.
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