BLADE STOP COMPONENTS AND ROLLER BEARING CLUTCH DESIGN FOR APOWER TOOL

摘要

A power tool includes a braking system that minimizes a stopping time f or a cutting blade of the power tool. The braking system includes a roller bearing clutch mechanism combined with a positive stop pin. The stop pin is provided at an end portion of a cable assembly. The cable assembly is coupled to a trigg er through a lever on one end, with the stop pin and a return spring inserted into a gear box on the other end. When the trigger is in a released position, the stop pin fully engages into a positive stop on a bearing cage at a top portion of the drive assembly. The coiled return spring keeps the stop pin in position. Whe n the trigger is pulled, the cable pulls the stop pin out of the positive stop .