ACTUATOR WITH MULTI-STAGE GEARS

摘要

An actuator with multi-stage gears includes a worm gear shaft driving assembly having a worm gear shaft, an electric motor having a transmission shaft, an annulus gear arranged between the worm gear shaft and the transmission shaft, and a plurality of multi-stage gears. The annulus gear includes an inner gear and a moving end actuated cooperatively with the inner gear on two ends thereof. The moving end is connected to and driving the worm gear shaft to rotate; each multi-stage gear is arranged between the transmission shaft and the inner gear; each multi-stage gear includes a first and a second outer diameter portions. The outer circumferential edges of the first and second outer diameter portions includes a helical gear engaged with the transmission shaft and a spur gear engaged with the inner gear respectively. Therefore, the actuator has merits of simplified components and reduced volume.

主权项

1. An actuator with multi-stage gears, comprising:
a worm gear shaft driving assembly comprising a worm gear shaft; an electric motor having a transmission shaft; an annulus gear arranged between said worm gear shaft and said transmission shaft; said annulus gear comprising an inner gear on one end thereof and a moving end actuated cooperatively with said inner gear on another end thereof; said moving end connected to said worm gear shaft and driving said worm gear shaft to rotate; and a plurality of multi-stage gears arranged between said transmission shaft and said inner gear; each one of said plurality of multi-stage gears having a first outer diameter portion and a second outer diameter portion; said first outer diameter portion comprising a helical gear on an outer circumferential edge thereof; said second outer diameter portion comprising a spur gear on an outer circumferential edge thereof; said helical gears engaged with said transmission shaft correspondingly; said spur gears engaged with said inner gear correspondingly.