| 摘要 |
PROBLEM TO BE SOLVED: To provide a range change-over device capable of shift range changing-over even during voltage reduction in which an actuator cannot operate normally in a shift range change-over system.SOLUTION: A range change-over device 2 comprises: a main motor 15 and an auxiliary motor 41; a sun gear 23 connected to a motor shaft 22 of the main motor 15; an auxiliary gear 43 connected to a motor shaft 42 of the auxiliary motor 41; a plurality of planet gears 24 meshing with the sun gear 23; an annular gear 25 in which an external tooth 25b meshing with the auxiliary gear 43 is formed together with an internal tooth 25a meshing with the planet gears 24; a carrier 26 supporting the planet gears 24 rotatably and revolvably while being rotational on the circumference of the motor shaft 22; a pinion 27 attached to the carrier 26 and rotating about the axis of the motor shaft 22; and a gear wheel meshing with the pinion 27.SELECTED DRAWING: Figure 2 |
