Patent ID: 9506542
Filing Date: 2016-11-29
CPC Classification: F16H

Claim Text:
1. A linear actuator, comprising: a gearbox; a motor structure, coupled to the gearbox; a lead screw, with a part contained in the gearbox and the other part protruded from the gearbox to the outside; a telescopic tube, having a nut screwed and transmitted with the lead screw; a quick release mechanism, contained in the gearbox, and including a cylindrical coupling member sheathed on the lead screw and a worm gear formed on a side of the cylindrical coupling member, and the cylindrical coupling member rotating with the lead screw, and the worm gear being driven by the motor structure to selectively clutch the cylindrical coupling member; and a buffer mechanism, sheathed on the external periphery of the lead screw and disposed between the nut and the gearbox.