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Apparatus and method for providing a drive device for a vehicle door

  • US 20060225358A1
  • Filed: 04/07/2006
  • Published: 10/12/2006
  • Est. Priority Date: 04/11/2005
  • Status: Abandoned Application
First Claim
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1. A drive assembly for a vehicle door, comprising:

  • a motor having a driving member;

    a housing having a shaft rotatably received therein;

    an input member being rotatably received upon the shaft, the input member being operatively associated with the driving member, wherein rotation of the driving member causes rotation of the input member;

    an armature mounted on the input member;

    a rotor fixedly secured to the shaft, the rotor being cylindrical in shape and has a plurality of teeth positioned along the periphery of the rotor, the teeth being positioned in an equidistant manner;

    a coil mounted to the housing, the coil providing magnetic flux lines through the rotor to attract the armature when the coil is energized thereby coupling the input member to the rotor, wherein the magnetic flux lines travel through a portion of the rotor and the armature but not through the plurality of teeth of the rotor; and

    an inductance sensor assembly mounted to the housing in a facing spaced relationship with respect to the plurality of teeth of the rotor, wherein rotational speed and direction of the rotor is detected by the inductance sensor assembly as the plurality of teeth of the rotor pass by the inductance sensor assembly.

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