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Motor, electric equipment, and method of manufacturing motor for reducing electric corosion of bearings

  • US 8,912,696 B2
  • Filed: 04/22/2009
  • Issued: 12/16/2014
  • Est. Priority Date: 04/22/2009
  • Status: Active Grant
First Claim
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1. A motor comprising:

  • a stator in which a winding is applied through an insulating part to a stator core formed by laminating a predetermined number of electromagnetic steel plates which have been punched into a predetermined shape;

    a rotor assembly in which a rotor and a bearing formed by a rolling bearing is fitted to a shaft;

    a printed wiring board which is arranged at an end part of the stator in an axial direction and to which a drive circuit is mounted;

    a bracket imposed to at least the end part of the stator in the axial direction to which the printed wiring board is arranged; and

    a conductive sheet provided between the printed wiring board and the bracket, wherein the conductive sheet and the printed wiring board are planar structures, and wherein the conductive sheet is parallel to and overlies the printed wiring board.

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