Torque sensor with alignment system
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0366807
(2009-02-06)
|
등록번호 |
US-7757570
(2010-08-09)
|
발명자
/ 주소 |
- Marin, Carlos E
- Portell, Michael P
- Maten, John R.
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출원인 / 주소 |
- GM Global Technology Operations, Inc.
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인용정보 |
피인용 횟수 :
6 인용 특허 :
4 |
초록
▼
A torque sensor for sensing torque in a rotatable shaft. The rotatable shaft is configured to rotate within a shaft housing. The sensor housing has a first end, a second end, and at least one sensing zone. At least one target zone is disposed on the rotatable shaft and substantially opposes the at l
A torque sensor for sensing torque in a rotatable shaft. The rotatable shaft is configured to rotate within a shaft housing. The sensor housing has a first end, a second end, and at least one sensing zone. At least one target zone is disposed on the rotatable shaft and substantially opposes the at least one sensing zone. At least one bearing member is disposed between the sensor housing and the rotatable shaft for limiting relative axial movement and allowing relative rotation between the sensor housing and the rotatable shaft. A first resilient member has a first end in contact with the first end of the sensor housing and a second end in contact with an interior wall of the shaft housing. A second resilient member has a first end in contact with a retaining member and a second end in contact with the second end of the sensor housing.
대표청구항
▼
What is claimed is: 1. A torque sensor for sensing torque in a rotatable shaft, wherein the rotatable shaft is configured to rotate within a shaft housing having an interior wall and an open end, the torque sensor comprising: a sensor housing at least partially circumscribing the rotatable shaft, t
What is claimed is: 1. A torque sensor for sensing torque in a rotatable shaft, wherein the rotatable shaft is configured to rotate within a shaft housing having an interior wall and an open end, the torque sensor comprising: a sensor housing at least partially circumscribing the rotatable shaft, the sensor housing having a first end, a second end, and at least one sensing zone; at least one target zone disposed on the rotatable shaft, wherein the at least one target zone is substantially opposing the at least one sensing zone; at least one bearing member disposed between the sensor housing and the rotatable shaft for limiting relative axial movement and allowing relative rotation between the sensor housing and the rotatable shaft; a first resilient member having a first end in contact with the first end of the sensor housing and a second end in contact with the interior wall of the shaft housing; and a second resilient member having a first end in contact with the second end of the sensor housing and a second end in contact with a retaining member connectable to the open end of the shaft housing. 2. The torque sensor of claim 1, wherein a magnetic field is produced in the at least one sensing zone. 3. The torque sensor of claim 2, wherein the at least one target zone includes a magnetostrictive material disposed on the rotatable shaft. 4. The torque sensor of claim 1, wherein the at least one bearing member is a needle bearing. 5. The torque sensor of claim 1, wherein the at least one sensing zone is a pair of sensing zones, the at least one target zone is a pair of target zones, and the at least one bearing member is a pair of bearing members. 6. The torque sensor of claim 5, wherein the pair of bearing members are disposed in annular notches disposed on an inner diameter of the sensor housing adjacent the first end and the second end of the sensor housing. 7. The torque sensor of claim 5, wherein the pair of target zones are adjacent the pair of bearing members. 8. The torque sensor of claim 1, wherein the retaining member is a snap ring disposed in a groove of the shaft housing. 9. The torque sensor of claim 1, wherein the first resilient member and the second resilient member are wave shaped plates. 10. The torque sensor of claim 1, wherein the first resilient member and the second resilient member are coil springs. 11. The torque sensor of claim 1, wherein the first resilient member and the second resilient member are substantially comprised of rubber. 12. The torque sensor of claim 1, wherein the first resilient member and the second resilient member are substantially comprised of plastic. 13. A torque sensor for sensing torque in a rotatable shaft, wherein the rotatable shaft is configured to rotate within a shaft housing having an interior wall and an open end, the torque sensor comprising: a sensor housing at least partially circumscribing the rotatable shaft, the sensor housing having a first end, a second end, and a pair of sensing zones, wherein a magnetic field is produced in the pair of sensing zones; a pair of target zones disposed on the rotatable shaft, wherein the pair of bearing members include magnetostrictive material and substantially oppose the pair of sensing zones; a pair of bearing members disposed between the sensor housing and the rotatable shaft for limiting relative axial movement and allowing relative rotation between the sensor housing and the rotatable shaft; a first resilient member having a first end in contact with the first end of the sensor housing and a second end in contact with the interior wall of the shaft housing; and a second resilient member having a first end in contact with the second end of the sensor housing and a second end in contact with a retaining member connectable to the open end of the shaft housing. 14. The torque sensor of claim 13, wherein the pair of bearing members is a pair of needle bearings. 15. The torque sensor of claim 13, wherein the pair of bearing members are disposed in annular notches disposed on an inner diameter of the sensor housing adjacent the first end and the second end of the sensor housing. 16. The torque sensor of claim 13, wherein the pair of target zones are adjacent the pair of bearing members. 17. The torque sensor of claim 13, wherein the retaining member is a snap ring disposed in a groove of the shaft housing. 18. The torque sensor of claim 13, wherein the first resilient member and the second resilient member are wave shaped plates. 19. The torque sensor of claim 13, wherein the first resilient member and the second resilient member are coil springs. 20. The torque sensor of claim 13, wherein the first resilient member and the second resilient member are substantially comprised of rubber. 21. The torque sensor of claim 13, wherein the first resilient member and the second resilient member are substantially comprised of plastic.
이 특허에 인용된 특허 (4)
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Garshelis Ivan J., Circularly magnetized non-contact torque sensor and method for measuring torque using same.
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Garshelis Ivan J., Collarless circularly magnetized torque transducer and method for measuring torque using same.
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Opie John E. ; Kilmartin Brian, Magnetoelastic torque sensor.
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Boyle Frederick P. ; Garvin Gary ; Damm Klaus-Werner ; Heath Daniel H. ; George Herman F. ; Moore Peter John,GBX ; Hicks Dale,GBX ; Robinson Terence Edward,GBX, On-board rotational viscometers.
이 특허를 인용한 특허 (6)
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Marin, Carlos E.; Poskie, Fredrick R.; Wilton, Daryl A., Integrated oil routing sleeve and torque sensor.
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Pietron, Gregory Michael; Kucharski, Joseph F.; Kapas, Nimrod; Yanakiev, Diana; Dobson, Mark Richard; Fujii, Yuji, Magnetic sensor packaging for transmissions.
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Shimizu, Yasuo; Arimura, Yutaka; Kuroki, Masahiro; Ikegami, Kentaro, Magnetostrictive torque sensor, electrically assisted bicycle and electric power steering apparatus carrying the sensor.
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Stevens, Carlos J., Non-contact torque determination system and method for a non-mechanically coupled rotating system.
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Meacham, Walter L., System and method for providing gas turbine engine output torque sensor validation and sensor backup using a speed sensor.
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Poskie, Fredrick R.; Marin, Carlos E.; Wilton, Daryl A., Torque sensor system with integrated electrical connectors.
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