| 摘要 |
The electromechanical actuator, particularly for a drum parking brake of a motor vehicle, comprises an electric motor with a housing (11, 13) fixable to the vehicle. A first shaft (12) is driven for rotation by the electric motor about a first axis (a>1<). A second shaft (17) is attached to a cable (21) in turn attached to a brake member to be actuated. A gear reduction mechanism, interposed between the first and the second shafts (12, 17), includes a stationary internal gear (14) defining a fixed central axis, and a mobile pinion (15) connected eccentrically to and driven by the first shaft (12) and engaging the internal gear (14) so as to perform a motion compounded of rotation about the axis (a>2<) of the pinion (15, 15') and revolution about the central axis of the internal gear (14). Recesses (16) and pins (18) are interposed between the second shaft (17) and the pinion (15), for rotating the second shaft at the same rotational speed of the pinion.
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