Patent ID: 9644719
Date: 2017-05-09
CPC Classifications: F16H,H02K,Y10T

Claim:
1. A step actuator comprising: first and second housings; a stator including first and second bobbins and first and second yokes; a rotor including a magnet and a nut member; a bearing rotatably supporting the nut member; a screw member coupled with the nut member to linearly move as the rotor rotates; a bearing cover coupled with the second housing; and a mounting member disposed on the bearing cover to support the screw member in such a manner that the screw member is linearly movable, wherein the magnet includes a spline hole provided at an inner peripheral surface thereof, and wherein the nut member includes a spline provided at an outer peripheral surface thereof and coupled with the spline hole formed in the magnet.