Actuator device for moving a movable cowl of a thrust reverser

Patent metadata

Field	Value
Publication number	US-9709003-B2
Application number	US-201415030848-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	Oct 24, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

The invention relates to an actuator device ( 8 ) for moving a movable cowl of a thrust reverser, including: an actuator ( 12 ) including a screw ( 14 ) and a nut ( 15 ) capable of engaging with the screw ( 14 ) such that a rotation of the screw relative to the nut translates the nut relative to the screw; a locking device ( 30 ) including a locking part ( 31, 57 ) which is movable relative to the screw ( 14 ) between a locked position in which the locking part ( 31, 57 ) prevents the rotation of the screw ( 14 ) and an unlocked position in which the locking part ( 31, 57 ) allows the rotation of the screw ( 14 ), in which the screw ( 14 ) includes a body ( 17 ) and a lock-inhibiting device ( 38 ), the lock-inhibiting device ( 38 ) including an inhibiting part ( 47, 48 ) which is movable relative to the body ( 17 ) between a first position in which the part ( 47, 48 ) allows the locking part ( 31, 47 ) to move between the locked position and the unlocked position, and a second position in which the inhibiting part ( 47, 48 ) prevents the locking part ( 31, 57 ) from moving into the locked position.

First claim

The invention claimed is:

1. An actuation device for displacing a movable cowl of a thrust reverser, comprising:
an actuator comprising a first element and a second element mounted movable in translation with respect to the first element, one of the first element and the second element being a screw, and the other being a nut capable of cooperating with the screw, so that a rotation of the first element with respect to the second element causes a translation of the second element with respect to the first element,
a locking device comprising a locking part movable with respect to the first element between a locked position wherein the locking part prevents the rotation of the first element and an unlocked position wherein the locking part allows rotation of the first element,
wherein the first element comprises a body and a locking inhibiting device, the locking inhibiting device comprising an inhibiting part movable with respect to the body between a first position wherein the inhibiting part allows the displacement of the locking part between the locked position and the unlocked position, and as second position wherein the inhibiting part prevents displacement of the locking part toward the locked position, and
wherein the first element is adapted to be driven in rotation about an axis of rotation X and the inhibiting part is movable in translation with respect to the body along a direction Y radially extending with respect to the axis of rotation X.

2. The device according to claim 1 , wherein the inhibiting part moves from the first position to the second position by moving away from the axis of rotation X.

3. The device according to claim 1 , wherein the inhibiting part comprises a drawer slidably mounted in the body.

4. The device according to claim 1 , wherein the locking inhibiting device comprises a rocker positioned to urge the inhibiting part toward the second position under the influence of the displacement of the second element.

5. The device according to claim 4 , wherein the rocker is rotatably mounted on the body.

6. The device according to claim 5 , comprising a rod movable in translation with respect to the first element and capable of being urged by the second element to displace the inhibiting part toward the first position.

7. The device according to claim 6 , wherein the movable rod extends at least partially inside the first element.

8. The device according to claim 1 , wherein the locking inhibiting device comprises an elastic return element arranged to urge the inhibiting part toward the second position.

9. The device according to claim 1 , wherein in the locked position, the locking part is engaged with the body of the first element.

10. The device according to claim 1 , wherein the locking part is movable in translation with respect to the body of the first element.

11. The device according to claim 1 , wherein the locking part is movable in rotation with respect to the body of the first element.

12. The device according to claim 1 , wherein the locking device comprises an electromagnet arranged, when it is activated, to urge the locking part toward the unlocked position.

13. The device according to claim 1 , wherein the locking device comprises an elastic return element positioned to urge the locking part toward the locked position.

14. The device according to claim 1 , wherein the locking device comprises a roller rotatably mounted on the locking part, by means of which the locking part bears against the inhibiting part.

15. The device according to claim 14 , wherein, when the inhibiting part is in the second position, the inhibiting part forms with the body a track on which the roller can roll during rotation of the first element.

16. The device according to claim 1 , comprising a position sensor capable of detecting the position of the locking part.

17. An actuating assembly for a thrust reverser, comprising:
a plurality of actuation devices according to claim 1 for displacing a movable cowl of the thrust reverser,
a motorized drive unit comprising an electric motor, and
a plurality of flexible shafts connecting the motor to the actuation devices to transmit a rotation of the motor to the actuators so as to cause deployment or retraction of the actuation devices.

18. An actuation device for displacing a movable cowl of a thrust reverser, comprising:
an actuator comprising a first element and a second element mounted movable in translation with respect to the first element, one of the first element and the second element being a screw, and the other being a nut capable of cooperating with the screw, so that a rotation of the first element with respect to the second element causes a translation of the second element with respect to the first element,
a locking device comprising a locking part movable with respect to the first element between a locked position wherein the locking part prevents the rotation of the first element and an unlocked position wherein the locking part allows rotation of the first element,
wherein the first element comprises a body and a locking inhibiting device, the locking inhibiting device comprising an inhibiting part movable with respect to the body between a first position wherein the inhibiting part allows the displacement of the locking part between the locked position and the unlocked position, and as second position wherein the inhibiting part prevents displacement of the locking part toward the locked position, and
wherein the locking inhibiting device comprises a rocker rotatably mounted on the body and positioned to urge the inhibiting part toward the second position under the influence of the displacement of the second element.

19. The device according to claim 18 , wherein the first element ( 14 ) is adapted to be driven in rotation about an axis of rotation X and the inhibiting part ( 47 , 48 ) is movable in translation with respect to the body ( 17 ) along a direction Y radially extending with respect to the axis of rotation X.

20. The device according to claim 18 , wherein the inhibiting part moves from the first position to the second position by moving away from the axis of rotation X.

21. The device according to claim 18 , wherein the inhibiting part comprises a drawer slidably mounted in the body.

22. The device according to claim 18 , comprising a rod movable in translation with respect to the first element and capable of being urged by the second element to displace the inhibiting part toward the first position.

23. The device according to claim 18 , wherein the movable rod extends at least partially inside the first element.

24. The device according to claim 18 , wherein the locking inhibiting device comprises an elastic return element arranged to urge the inhibiting part toward the second position.

25. The device according to claim 18 , wherein in the locked position, the locking part is engaged with the body of the first element.

26. The device according to claim 18 , wherein the locking part is movable in translation with respect to the body of the first element.

27. The device according to claim 18 , wherein the locking part is movable in rotation with respect to the body of the first element.

28. The device according to claim 18 , wherein the locking device comprises an electromagnet arranged, when it is activated, to urge the locking part toward the unlocked position.

Assignees

• Sagem Defense Securite

Inventors

• Maerky Christophe
• Baudin Emmanuel
• Donce Lucien

Classifications

• F16H25/2454

  Brakes; Rotational locks · CPC title

• F05D2250/313

  the axes being perpendicular to each other · CPC title

• F02K1/763 Primary

  with actuating systems or actuating devices; Arrangement of actuators for thrust reversers · CPC title

• F05D2260/56

  using cams or eccentrics · CPC title

• F05D2250/41

  with one degree of freedom · CPC title