Linear actuator and buffer mechanism thereof

Patent metadata

Field	Value
Publication number	US-9506542-B2
Application number	US-201414459308-A
Country	US
Kind code	B2
Filing date	Aug 13, 2014
Priority date	Jun 27, 2014
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A linear actuator includes a gearbox, a motor structure, a lead screw, a telescopic tube, a quick release mechanism and a buffer mechanism. The motor structure is connected to the gearbox. The lead screw has a part inside the gearbox and the other part outside. The telescopic tube has a nut screwed with the lead screw. The quick release mechanism inside the gearbox is coupled to a cylindrical coupling member and a worm gear. The cylindrical coupling member is rotated with the lead screw, and the worm gear is driven by the motor structure to clutch the cylindrical coupling member. The buffer mechanism is installed at the external periphery of the lead screw and between the nut and gearbox for absorbing impact forces.

First claim

What is claimed is:

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 cou…

Assignees

• Timotion Technology Co Ltd

Inventors

• Wu Chou-Hsin

Classifications

• F16H2025/2046

  Mechanical Engineering · mapped topic

• F16H2025/209

  Mechanical Engineering · mapped topic

• F16H2025/2071

  Mechanical Engineering · mapped topic

• F16H2025/2031

  Mechanical Engineering · mapped topic

• F16H2025/2084

  Mechanical Engineering · mapped topic