Power tool including an output position sensor

  • US 10,272,550 B2
  • Filed: 09/26/2018
  • Issued: 04/30/2019
  • Est. Priority Date: 02/25/2016
  • Status: Active Grant
First Claim
Patent Images

1. A power tool comprising:

  • a motor including a rotor and a stator;

    a motor sensor board positioned perpendicularly with respect to the rotor of the motor, the motor sensor board extending in a radial outward direction with respect to the rotor of the motor;

    an impact mechanism coupled to the motor, the impact mechanism includinga hammer driven by the motor, andan anvil positioned at a nose of the power tool, the anvil configured to receive an impact from the hammer;

    an impact case housing the anvil and the hammer;

    a sensor assembly mounted to a top surface of a circuit board and located within a recess below the rotor of the motor in the radial outward direction, the circuit board positioned parallel with respect to the rotor of the motor, a plane formed by the top surface of the circuit board intersecting the motor sensor board, the sensor assembly configured to generate an output signal indicative of the hammer impacting the anvil; and

    a controller including a processor and a memory, the controller connected to the sensor assembly and to the motor, the controller configured to;

    receive the output signal from the sensor assembly,detect a number of impacts executed by the hammer based on the output signal from the sensor assembly, andcontrol the motor based on the number of impacts executed by the hammer.

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