Patent ID: 6651523
Filing Date: 2003-11-25
Classification: B60T,B62L,F16C,Y10T

Abstract:
An automatic tension device of a brake, comprising a fixing base, brake lever, a worm, a worm wheel, a gap adjusting screw , a pull hook, a able guide seat, and a cable, wherein:the brake lever is pivotally mounted on the fixing base; the worm is received in the fixing base, and has one end having a periphery provided with multiple one-direction ratchet teeth; the worm wheel is received in the fixing base and meshes with the worm, the worm wheel has an inner wall formed with an inner thread; the gap adjusting screw is received in the fixing base, the gap adjusting screw has an inner wall formed with a through hole for passage of the cable and has an outer wall formed with an outer thread screwed into the inner thread of the worm wheel; the pull hook is pivotally mounted on the brake lever, and is provided with an one-direction ratchet tooth that may be locked with one of the multiple one-direction ratchet teeth of the worm; the cable guide seat is mounted on the brake lever; and the cable is extended through the through hole of the gap adjusting screw and is secured on the cable guide seat.