Permanent magnet brushless DC motor

Permanent magnet brushless DC motor

  • CN 202,178,695 U
  • Filed: 08/05/2011
  • Issued: 03/28/2012
  • Est. Priority Date: 08/05/2011
  • Status: Active Grant
First Claim
Patent Images

1. a non-brush permanent-magnet DC motor comprises:

  • be provided with stator and rotor in the electric machine casing, stator core is provided with winding coil, and rotor shaft is provided with the magnetic core that discoid steel disc builds up;

    The magnetic core periphery is fixed with the rotor magnetic shoe;

    Motor is provided with the position sensing element that comprises transducer magnet steel and Hall element, and magnet steel seat is fixed in and stretches out on the outer machine shaft of end cap, and the transducer magnet steel is located in the magnet steel seat;

    It is characterized in that;

    described magnet steel seat has the back-up ring of annular;

    Be bending-like between the sidewall of back-up ring and magnet steel seat, the sidewall of back-up ring and magnet steel seat is an integral piece, and the transducer magnet steel is placed in the inboard of back-up ring;

    The magnetic line of force direction of transducer magnet steel is perpendicular to the machine shaft setting, and Hall element is located at the inboard of transducer magnet steel.

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