Importance

Loading Importance Indicators...

Abstract

A clutch-buffer assembly for power wrench comprises a driven wheel having an outwardly extended positioning tube disposed at a power-input end thereof. A retaining spring, a retaining disc, a driven gear, an anchor ring, and a reversible motor are collared onto the positioning tube sequentially, wherein the retaining disc is limited to move back and forth along the positioning tube without rotation; a pair of protruding teeth and reception cavities in respective contact faces of the retaining disc and the driven gear; and the reversible motor is used to drive the driven gear. When the driven wheel rotates at a higher speed, the retaining disc can be detached from the driven gear for control of the power consumption to lessen the imposed load in order not to blow the fuse, by this way the power wrench can generate larger output torque. Also, the retaining disc can be detached from the driven gear to alleviate the backlash caused by recoil of the driven wheel when impacting.

Loading the Abstract Image...

First Claim