| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor actuator, which is small-sized and reliable and capable of gaining high torque output characteristics at low rotational speed. SOLUTION: A motor actuator 10 is provided with a magic gear mechanism, combining a movable internal gear 92 with a planetary gear mechanism consisting of a sun gear 60, a carrier 68, a planetary gear 84 and a fixed internal gear 84. A difference in tooth number between a fixed internal gear 86 and a movable internal gear 92 is one, therefore a large speed reducing ratio of the value raising a speed reducing ratio to the tooth number of the movable internal gear 92 is gained. The movable internal gear 92 is arranged simply in parallel in the fixed internal gear 86, therefore the size of motor actuator 10 is reduced. The fixed internal gear 86 is supported in a casing from the axial direction to suppress the deformation, and thus the output characteristics are prevented from lowering.
|
