Patent ID: 8950279
Filing Date: 2015-02-10
Classification: F16H,H02K,Y10T

Abstract:
1. A linear actuator comprising: a motor, a movable unit, and a stroke control unit, the motor having a spindle, the movable unit having a worm gear and a rotary shaft, the stroke control unit having at least one transmission member and at least one micro switch, the linear actuator being characterized in that: the worm gear having annular teeth for engagement with the stroke control unit, the transmission member being driven by the annular teeth to operate the micro switch for activation or deactivation of the motor; wherein the transmission member comprises a cylindrical body, at least one convexity formed on a periphery thereof and corresponding to the micro switch in number, and an annular teeth portion formed on an end of the cylindrical body for engagement with the annular teeth of the worm gear; wherein the annular teeth of the worm gear are spiral or helix.