Motor having a braking function and used in linear actuator

Patent metadata

Field	Value
Publication number	US-9431872-B2
Application number	US-201514971021-A
Country	US
Kind code	B2
Filing date	Dec 16, 2015
Priority date	Dec 30, 2011
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

A motor, which has a braking function and is used in a linear actuator includes a main body, a rotation shaft, a braking means and a stopping means. The rotation shaft penetrates the center of the main body. The braking means includes a braking ring and a helical ring. The braking ring includes a plurality of curved plates. The helical ring surrounds outer edges of the curved plates. Each curved plate is put on the outer periphery of the rotation shaft. The stopping means is disposed between the main body and the braking means for restricting the rotation of any of the curved plates. By this arrangement, a better braking and decelerating function can be achieved.

First claim

What is claimed is:

1. A motor having a braking function and used in a linear actuator, including:
a main body;
a rotation shaft penetrating the center of the main body;
a braking means comprising a braking ring and a helical ring, the braking ring being constituted of a plurality of curved plates, the helical ring surrounding an outer edge of each curved plate, each curved plate being put on an outer periphery of the rotation shaft; and
a stopping means disposed between the main body and the braking means for restricting the rotation of any of the curved plates;
wherein a slot is formed between any two adjacent curved plate, and the stopping means includes the slot and a pin fixed to the main body and inserted into the slot.

2. The motor having a braking function and used in a linear actuator according to claim 1 , wherein the main body comprises a fixing element, the fixing element is provided with a positioning hole, the helical spring extends to form a positioning arm, and the positioning arm is inserted into the positioning hole for positioning.

3. The motor having a braking function and used in a linear actuator according to claim 1 , wherein the braking ring is formed into a circular shape, and the helical spring is a circular ring for elastically pressing the braking ring.

4. The motor having a braking function and used in a linear actuator according to claim 1 , wherein the braking ring is formed into a stepped circular shape, and the helical spring is a circular ring for elastically pressing the braking ring.

Assignees

• Timotion Technology Co Ltd

Inventors

• Wu Chou-Hsin

Classifications

• F16D49/02

  shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member (similar clutches F16D13/08) · CPC title

• H02K7/1166

  comprising worm and worm-wheel (structural association with bearings specially adapted for worm gear drives H02K7/081) · CPC title

• F16H25/2454

  Brakes; Rotational locks · CPC title

• H02K7/102 Primary

  with friction brakes · CPC title

• F16H25/22

  with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members · CPC title