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Electronic switching module for a power tool

  • US 10,256,697 B2
  • Filed: 06/30/2016
  • Issued: 04/09/2019
  • Est. Priority Date: 05/19/2011
  • Status: Active Grant
First Claim
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1. An electronic power apparatus comprising:

  • a housing;

    a pair of input power pins and a pair of output power pins;

    a plurality of power components mounted on a power circuit board and electrically connected to the input power pins and the output power pins to modulate a supply of power from the input power pins to the output power pins;

    a control unit arranged on a control circuit board disposed at a distance from the power circuit board and substantially parallel to the power circuit board, the control circuit board and the power circuit board being arranged inside the housing; and

    a user-actuated input unit including a variable-speed actuator a first portion of which is at least partially arranged outside the housing to be engageable by a user and a second portion of which is slidably sandwiched between the power circuit board and the control circuit board along an axis substantially parallel to the power circuit board and the control circuit board,wherein the second portion of the user-actuated input unit comprises a wiper portion supporting a conductive wiper, andwherein the control unit is arranged on a first side of the control circuit board and a sense pad is arranged on a second side of the control circuit board facing the power circuit board and engaging the second portion of the variable-speed actuator, the sense pad providing an analog signal to the control unit corresponding to an actuation of the variable-speed actuator.

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