Device for actuating a control surface of an aircraft

摘要

The invention relates to a device (4) for actuating a control surface (2) of an aircraft, comprising: —a frame intended to be mounted fixed in relation to a structure of an aircraft, —a bell crank part (7) mobile in rotation in relation to the frame around an axis of rotation (X, X′) and adapted in order to be connected to a mechanical unit (1) for displacement of the control surface (2), —a slider (6) intended to be connected to a drive member (5), the slider (6) being mobile in translation in relation to the frame according to a direction of translation, parallel to the axis of rotation (X, X′) of the bell crank part (7), —first connecting means (61) between the slider (6) and the bell crank part (7) in order to convert a displacement in translation of the slider (6) generated by the drive member (5) into a displacement in rotation of the bell crank part (7), in order to actuate the mechanical unit (1) for displacement of the control surface (2), an input part (53, 16) able to be driven in rotation by the motor, —a control rod mounted fixed in relation to the frame and extending parallel to the axis of rotation (X) of the input part and at a distance from the latter, in order to block in rotation the slider in relation to the frame and authorize a translation of the slider in relation to the frame, the control rod extends through the slider (6). Application specific to the actuating of control surfaces incorporated into a thin airfoil.

主权项

1. A device (4) for actuating a control surface (2) of an aircraft, comprising:
a frame for fixedly mounting to a structure of an aircraft, a connecting rod (7) rotatable in relation to the frame around an axis of rotation (X, X′) for displacement of the control surface (2), said connecting rod including helical grooves (710) for the circulation of balls (173), said helical grooves being arranged in a first zone (711) and a second zone (712), wherein said helical grooves are oriented in a first direction in said first zone and in a second direction in said second zone, a control rod mounted fixed in relation to the frame, the control rod extending through the slider (6), wherein the control rod extends parallel to the axis of rotation of an input part and at a distance from the input part, in order to block rotation of the slider in relation to the frame and allow a translational movement of the slider in relation to the frame, a slider (6) for connecting to a drive member (5), the slider (6) being mobile in relation to the frame according to a direction of translational movement, parallel to the axis of rotation (X, X′) of the connecting rod (7), the slider (6) comprising first helical grooves (610) cooperating with the helical grooves (710) of the connecting rod (7) in order to convert a displacement in translational movement of the slider (6) generated by the drive member (5) into a displacement in rotation of the connecting rod (7), in order to actuate a mechanical unit (1) for displacement of the control surface (2), wherein the slider (6) comprises a cylindrical body (611) having the first helical grooves (610) for the circulation of the balls (173) formed on an external cylindrical surface of the body (611) and internal channels (614) for the recirculation of the balls formed inside the body (611) configured to carry the balls removed at an output of the first helical grooves (610) in order to reintroduce them at an input of the first helical grooves (610).