Range switching device

摘要

A range switching device includes: a range switching portion having an output shaft rotatably supported inside a housing and switchable to ranges corresponding to output shaft turning positions; a motor attached with its motor shaft spaced apart from a shaft center of the output shaft; a reducer mechanism linked to the motor and the range switching portion; and a control board controlling rotation of the motor. The reducer mechanism has a planetary gear reducer mechanism formed of a sun gear, planetary gears, an internal gear, and a carrier supporting the planetary gears, and a spur gear reducer mechanism formed of a pinion and a main gear linked to the pinion. The control board is installed oppositely to the output shaft and the motor.

主权项

1. A range switching device, comprising:
a range switching portion having an output shaft supported in a rotatable manner inside a housing formed of a front body and a rear body and switchable to a plurality of ranges corresponding to turning positions of the output shaft; a motor attached inside the housing, a motor shaft of which is spaced apart from a shaft center of the output shaft; a reducer mechanism linked to the motor and the output shaft; and a control board (14) attached inside the housing and equipped with an electrical control unit which controls rotation of the motor;wherein:
the reducer mechanism has,
a planetary gear reducer mechanism formed of a sun gear coupled to the motor shaft, a plurality of planetary gears meshed with the sun gear and installed equally on a circumference, an internal gear meshed with the planetary gears, and a carrier supporting the planetary gears in rotatable and revolvable manners, anda spur gear reducer mechanism formed of a pinion coupled to the carrier on an opposite side to the planetary gears and a main gear fixed to the output shaft of the range switching portion and linked to the pinion;and
the control board is installed oppositely to the output shaft and the motor.