Integrated electronic switch and control module for a power tool

An electric power tool comprising:

• a tool housing;
• an electric motor disposed in the housing;
• an electronic switch and control module also disposed in the housing, wherein the electronic switch and control module comprises:
• a module housing including a bottom surface, side walls, and an open face;
• a printed circuit board (PCB) arranged along a plane and having a first surface and a second surface, the first surface having a first portion and a second portion, the PCB being received from the open face of the module housing;
• a plurality of power switches mounted on the PCB to switchably connect a supply of electric power from a power source to the electric motor;
• at least one heat sink in thermal communication with the plurality of power switches, the heat sink being secured to the second portion of the first surface of the PCB;
• an input unit having at least one electro-mechanical element at least partially disposed in sliding contact with the first portion of the first surface of the PCB and generating a signal for controlling a switching operation of the plurality of power switches;
• an encapsulation member arranged to mate with a mating surface of the side walls of the module housing to form an enclosed compartment enclosing the electro-mechanical element of the input unit on the first portion of the first surface of the PCB, but not enclosing the at least one heat sink on the second portion of the first surface of the PCB to allow the at least one heat sink to be exposed within the tool housing, wherein the encapsulation member includes a wall substantially perpendicular to the PCB and arranged to rest of the first surface of the PCB between the first portion and the second portion to form the enclosed compartment around the first portion, and wherein a lower end of the wall is sealed to the first surface of the PCB;
• and
• a conformal coating applied on the second portion of the first surface of the PCB, but not on the first portion of the first surface of the PCB, the conformal coating sealing the lower end of the wall to the first surface of the PCB.