Motorized spindle drive with overload protection

Details Motorized spindle drive with overload protection Motorized spindle drive with overload protection

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 25/20 (2006.01)

Patent

CA 2700572

The invention relates to a motorized spindle drive for an actuator, particularly for an aerodynamically effective surface of an aircraft, having a spindle (1) and a motor (2) that comprises a mechanical transmission element (4) engaging the spindle (1) in order to drive said spindle and causing a relative movement in the axial direction between the spindle and the motor (2) and that is connected to an element (6) that is fixed in place relative to the motion of the spindle, said element absorbing the torque of the motor (2). According to the invention, the bearing (6, 7, 8, 9) absorbing the torque of the motor (2) comprises a detachable coupling (7, 8, 9) that detaches upon a predetermined torque being exceeded and releases the motor (2) in the sense of a free movement in the axial direction of the spindle (1) relative to the fixed element (6).

Système d'entraînement à moteur d'une broche pour un servomoteur, en particulier pour une surface aérodynamiquement efficace d'un aéronef, système comprenant une broche (1) et un moteur (2) qui présente un élément de transmission mécanique (4) en prise avec le système d'entraînement, provoquant un déplacement relatif, en direction axiale, entre la broche et le moteur (2), et qui est monté sur un élément (6) fixe par rapport au déplacement de la broche, et absorbant le couple de rotation du moteur (2), L'invention est caractérisée en ce que le palier (6, 7, 8, 9) absorbant le couple du moteur (2), renferme un accouplement amovible (7, 8, 9) qui se déclenche lors du dépassement d'un couple prédéterminé, et libère le moteur (2) dans le sens d'un libre déplacement en direction axiale de la broche (1) par rapport à l'élément fixe (6).

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