IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0622936
(2009-11-20)
|
등록번호 |
US-8181550
(2012-05-22)
|
우선권정보 |
FR-08 06557 (2008-11-21) |
발명자
/ 주소 |
- Gemmati, Bernard
- Biest, Romuald
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
2 |
초록
▼
A rotary actuator incorporating a force relationship includes a twistably-deformable structure having a first and a second end plate and a helical spring with a first and a second terminal end secured on the first and the second end plate, respectively, and wherein the first and the second end plate
A rotary actuator incorporating a force relationship includes a twistably-deformable structure having a first and a second end plate and a helical spring with a first and a second terminal end secured on the first and the second end plate, respectively, and wherein the first and the second end plate have a first and a second notch, respectively, and wherein the first and the second notch have a first and a second contact zone, respectively. The rotary actuator further includes an outlet shaft and a motor assembly having an outlet gear configured to drive the twistably-deformable structure so as to drive the outlet shaft in rotation, wherein the motor assembly, the twistably-deformable structure and the outlet shaft are disposed in succession. The rotary actuator has a first finger constrained to rotate with the outlet gear and a second finger constrained to rotate with the outlet shaft.
대표청구항
▼
1. A rotary actuator incorporating a force relationship comprising: a twistably-deformable structure having a first and a second end plate and a helical spring with a first and a second terminal end secured on the first and the second end plate, respectively, and wherein the first and the second end
1. A rotary actuator incorporating a force relationship comprising: a twistably-deformable structure having a first and a second end plate and a helical spring with a first and a second terminal end secured on the first and the second end plate, respectively, and wherein the first and the second end plate have a first and a second notch, respectively, and wherein the first and the second notch have a first and a second contact zone, respectively;an outlet shaft;a motor assembly having an outlet gear configured to drive the twistably-deformable structure so as to drive the outlet shaft in rotation, wherein the motor assembly, the twistably-deformable structure and the outlet shaft are disposed in succession;a first finger constrained to rotate with the outlet gear and extending longitudinally parallel to a twist axis of the twistably-deformable structure so as to cooperate with the first end plate by passing through the twistably-deformable structure; anda second finger constrained to rotate with the outlet shaft and extending longitudinally parallel to the twist axis so as to cooperate with the second end plate by passing through the twistably-deformable structure, wherein at least one of the first and the second finger is an adjustable finger and includes an adjustment device configured to press the adjustable finger against the first contact zone and the second contact zone. 2. The rotary actuator as recited in claim 1, wherein only one of the first and the second finger is adjustable. 3. The rotary actuator as recited in claim 1, wherein the adjustable finger is symmetrical about a longitudinal midplane of the adjustable finger. 4. The rotary actuator as recited in claim 1, wherein the adjustable finger includes a first and a second branch separated by a slot passing longitudinally through the adjustable finger, and wherein the adjustment device is disposed in the slot so as to cause the first and the second branch to move away from an initial position. 5. The rotary actuator as recited in claim 1, wherein the adjustable finger includes a fixed end zone mechanically connected to one of the outlet shaft and the outlet gear, respectively, and a free end zone opposite the fixed end zone and a first and a second branch separated by a slot passing longitudinally through the at least one adjustable finger, wherein the slot includes a first and a second reception zone disposed in succession from the fixed end zone towards the free end zone, and wherein the adjustment device includes a tapped insert disposed in the first reception zone and a screw disposed in the second reception zone. 6. The rotary actuator as recited in claim 5, wherein the screw includes a conical tip, and wherein the second reception zone includes a conical portion at the free end zone, the conical portion configured to cooperate with the conical tip so as to move the first and the second branch apart from an initial position. 7. The rotary actuator as recited in claim 5, wherein the second reception zone has a cylindrical shape. 8. The rotary actuator as recited in claim 5, wherein the screw includes a head disposed in the first reception zone. 9. The rotary actuator as recited in claim 5, wherein the first and the second branch each have a reduced thickness in the first reception zone, the first reception zone having a first width in a transverse direction and the second reception zone having a second width, wherein the first width is greater than the second width. 10. The rotary actuator as recited in claim 5, wherein the first branch includes a first bearing zone configured to cooperate with the first contact zone and the second branch includes a second bearing zone configured to cooperate with the second contact zone, the first and the second bearing zone both aligned with the second reception zone. 11. A method of reducing slack in a rotary actuator incorporating a force relationship, the rotary actuator having a twistably-deformable structure having a first and a second end plate and a helical spring with a first and a second terminal end secured on the first and the second end plate, respectively, and wherein the first and the second end plate have a first and a second notch, respectively; an outlet shaft; a motor assembly having an outlet gear configured to drive the twistably-deformable structure so as to drive the outlet shaft in rotation, wherein the motor assembly, the twistably-deformable structure and the outlet shaft are disposed in succession; a first finger constrained to rotate with the outlet gear and extending longitudinally parallel to a twist axis of the twistably-deformable structure so as to cooperate with the first end plate by passing through the twistably-deformable structure; and a second finger constrained to rotate with the outlet shaft and extending longitudinally parallel to the twist axis so as to cooperate with the second end plate by passing through the twistably-deformable structure, wherein at least one of the first and the second finger is an adjustable finger and includes an adjustment device configured to press the adjustable finger against the first contact zone and the second contact zone, the method comprising: pressing one of the first and the second finger against a first contact zone of the first notch and against a second contact zone of the second notch; andmaneuvering the adjustable finger so as to cause the adjustable finger to pass through the first and the second notch without coming; into contact with the first and the second contact zone; andmoving the adjustment device to press the adjustable finger against the first contact zone and against the second contact zone. 12. The method as recited in claim 11, wherein the moving of the adjustment device includes moving the first and the second branch apart from an initial position so as to be pressed against the first and the second contact zone.
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