Abstract: A hinge actuator for a wing mirror unit includes a base plate, including base shaft with mirror support; output part; coupling ring; and gear wheel. The base plate and mirror support include cooperating stops. The coupling ring is arranged so as to be rotatable with limited travel about the base of the shaft between a first angle ?1, which corresponds to a folded-out position, and a second angle ?2. The coupling ring can cooperate with the mirror support via a first set of cooperating stops, and can cooperate with the base plate via a second set of cooperating stops, such that in the first angle ?1 of the coupling ring, the spring force is transmitted, through cooperation of the first set of stops, and that in the second angle ?2, the spring force, through cooperation of the second set of stops, is transmitted to the base plate.

Abstract: The invention relates to a hinge actuator comprising a first part which is configured for connection with a second part via an electric drive. The first and the second part are provided with stops cooperating in a pivoting direction for defining a select or predetermined position of the actuator parts with respect to each other. In an embodiment, in a first position of a coupling between the first part and the second part, these parts can pivot via the electric drive. In a second position, the first part and the second part are not connected via the drive but can be pivoted relative to each other manually. Further, the first and the second part may be provided with stops only cooperating in the second position of the coupling in an opposing pivoting direction, for defining the select position.