Abstract: A power tool including an electric motor is provided. The tool includes a substantially disc-shaped printed circuit board (PCB), power switches mounted on the PCB; magnetic sensors mounted on the PCB facing the motor; a heat sink in thermal communication with the power switches disposed between the PCB and the electric motor; and a molded casing structurally securing the heat sink relative to the PCB. The molded casing includes a center opening, at least one first opening provided at a first radial distance from the center opening arranged to receive the magnetic sensors therein, and at least one second opening provided at a second radial distance from the center opening arranged to securely receive the heat sink therein.

Abstract: A power tool including an electric motor is provided. The tool includes a substantially disc-shaped printed circuit board (PCB), power switches mounted on the PCB; magnetic sensors mounted on the PCB facing the motor; a heat sink in thermal communication with the power switches disposed between the PCB and the electric motor; and a molded casing structurally securing the heat sink relative to the PCB. The molded casing includes a center opening, at least one first opening provided at a first radial distance from the center opening arranged to receive the magnetic sensors therein, and at least one second opening provided at a second radial distance from the center opening arranged to securely receive the heat sink therein.

Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a module housing having a radial portion and a cylindrical portion extending from the radial portion away from the electric motor and defining an open end, a printed circuit board (PCB) received within the module housing through the open end thereof, power switches mounted on the PCB, and magnetic sensors mounted on the PCB facing the motor substantially equidistantly from a center of the PCB. The module housing includes openings disposed in the radial portion angularly around a center of the module housing to receive the magnetic sensors therein to allow the magnetic sensors to magnetically interface with the electric motor.

Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a module housing having a radial portion and a cylindrical portion extending from the radial portion away from the electric motor and defining an open end, a printed circuit board (PCB) received within the module housing through the open end thereof, power switches mounted on the PCB, and magnetic sensors mounted on the PCB facing the motor substantially equidistantly from a center of the PCB. The module housing includes openings disposed in the radial portion angularly around a center of the module housing to receive the magnetic sensors therein to allow the magnetic sensors to magnetically interface with the electric motor.

Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a printed circuit board (PCB) having a first surface and a second surface; first set of power switches mounted on the first surface of the PCB; second set of power switches mounted on the PCB and electrically coupled to the first power switches forming an inverter bridge circuit for driving the electric motor; a first heat sink surface-mounted on the first surface of the PCB and having a planar main body disposed over the first power switches; a module housing arranged to receive the PCB therein; and a second heat sink secured to the module housing in thermal communication with the first heat sink to transfer heat from the first power switches.

Abstract: An electronic module is provided for a power tool having an electric motor. The electronic module includes a printed circuit board (PCB) being substantially disc-shaped; power switches mounted on the PCB forming an inverter bridge circuit for driving the electric motor; a controller mounted on the PCB and configured to control a switching operation of the power switches; positional sensors mounted on the PCB substantially equidistantly from a center of the PCB within the control portion and in communication with the controller to provide positional signals related to a rotational position of the electric motor to the controller; and a module housing arranged to receive the PCB therein. The module housing includes a planar portion in parallel to the PCB and openings disposed in the planar portion angularly around a center of the module housing to receive the positional sensors therein.

Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a printed circuit board (PCB) having a first surface and a second surface; first set of power switches mounted on the first surface of the PCB; second set of power switches mounted on the PCB and electrically coupled to the first power switches forming an inverter bridge circuit for driving the electric motor; a first heat sink surface-mounted on the first surface of the PCB and having a planar main body disposed over the first power switches; a module housing arranged to receive the PCB therein; and a second heat sink secured to the module housing in thermal communication with the first heat sink to transfer heat from the first power switches.

Abstract: An electronic module is provided for a power tool having an electric motor. The electronic module includes a printed circuit board (PCB) being substantially disc-shaped; power switches mounted on the PCB forming an inverter bridge circuit for driving the electric motor; a controller mounted on the PCB and configured to control a switching operation of the power switches; positional sensors mounted on the PCB substantially equidistantly from a center of the PCB within the control portion and in communication with the controller to provide positional signals related to a rotational position of the electric motor to the controller; and a module housing arranged to receive the PCB therein. The module housing includes a planar portion in parallel to the PCB and openings disposed in the planar portion angularly around a center of the module housing to receive the positional sensors therein.

Abstract: An electronic switch and control module for a power tool having an electric motor is provided. The module includes a printed circuit board (PCB), an encapsulation member forming an enclosed compartment enclosing a portion of a surface of the PCB, and power switches mounted on the surface of the PCB outside the enclosed compartment, where the power switches are electrically configured to switchably connect a supply of electric power from a power source to the electric motor. The module further includes an input unit having at least one electro-mechanical element at least partially disposed within the enclosed component and generating a signal for controlling a switching operation of the plurality of power switches.

Abstract: A power tool is provided including a tool housing, an electric motor disposed in the housing, and a variable-speed actuator having a trigger, a sliding member linked to the trigger and moveable in a longitudinal direction, and a compression spring engaging the sliding member and a wall arranged at a distance from the sliding member in the longitudinal direction. A post is disposed on the wall, where an end of the compression spring engaging the wall is disposed around the post to limit a lateral movement of the compression spring.

Abstract: An electronic switch and control module for a power tool having an electric motor is provided. The module includes a module housing including a bottom surface, side walls, and an open face; a printed circuit board (PCB) fittingly received from the open face of the module housing and securely disposed within the module housing; an encapsulation member arranged to mate with a mating surface of the side walls of the module housing to form an enclosed compartment over a portion of the PCB to enclose at least one electronic or electro-mechanical element mounted on a surface of the PCB; and power switches mounted on the surface of the PCB within an open compartment of the module housing where the encapsulation member does not enclose the surface of the PCB, the power switches being electrically configured to switchably connect a supply of electric power from a power source to the electric motor.

Abstract: An electronic switch and control module for a power tool having an electric motor is provided. The module includes a module housing including a bottom surface, side walls, and an open face, a printed circuit board (PCB) received from the open face of the module housing and securely disposed within the module housing at a distance from the bottom surface of the module housing; power switches mounted on a top surface of the PCB, and heat sinks discretely arranged and each mounted over a respective one of the plurality of power switches and secured to the top surface of the PCB to transfer heat away from the power switch through the open face of the module housing.

Abstract: A directional input unit is provided for a power tool having an electric motor is provided, where the input unit is configured to output a signal indicative of a rotational direction of the electric motor. The input unit includes a forward/reverse actuator having a lever extending from an engagement member and pivotable around a pivot member, the lever having a contact tip, and a biasing member. The biasing member including a lever engaging member engaging the contact tip and having an upper portion and a lower portion with a groove formed at an end common point of the upper and lower portions. A first leg of the biasing member extend downwardly from the upper portion and arranged to be securely received inside an opening of a holder, and a second leg extends upwardly from the lower portion outside the opening between the lever engaging member and the first leg.