HANDHELD POWER TOOL WITH COMPACT AC SWITCH

摘要

A power tool is disclosed having a compact AC switch assembly. An electric motor driving the power tool is contained within a housing that includes a handle. A trigger is slidingly received in the handle and moves in an axis of trigger travel along a trigger travel distance extending between an extended position of the trigger and a depressed position. A trigger switch including a printed circuit board is disposed in mechanical communication with the trigger and controls the electric motor in accordance with trigger position. The printed circuit board has a plurality of conductive traces that are sequentially arranged and linearly aligned adjacent the trigger in a direction that is transverse to the axis of trigger travel to reduce the width of the printed circuit board to a value that is less than or equal to three times the trigger travel distance.

主权项

1. A power tool having a compact AC switch assembly, comprising:
an electric motor; a housing containing said electric motor and including a handle; a trigger configured to selectively operate the electric motor, the trigger being movable along an axis of trigger travel between an extended position and a depressed position; said trigger having a trigger travel distance over which it travels from said extended position to said depressed position; a trigger switch attached to said trigger to control said electric motor in accordance with position of said trigger in relation to said trigger switch; and said trigger switch including a printed circuit board having a width extending along said axis of trigger travel; a variable resistor on the printed circuit board; wherein a length of the variable resistor along the axis of trigger travel is greater than 50% of the printed circuit board width extending along said axis of trigger travel.