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Brushless DC motor and method of manufacturing brushless DC motor

  • US 6,943,474 B2
  • Filed: 09/01/2004
  • Issued: 09/13/2005
  • Est. Priority Date: 02/14/2001
  • Status: Expired due to Fees
First Claim
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1. A brushless DC motor comprising:

  • a rotor having plural magnetic poles provided at an equal pitch in a circumferential direction by mounting permanent magnets in magnet mounting holes; and

    a stator having plural slots arranged at an equal pitch in a circumferential direction, wherein the magnetic poles of said rotor include magnetic poles whose magnet deviation angle formed by a central line of an effective polar opening angle and a central line of said magnet mounting hole is a first angle; and

    magnetic poles whose magnet deviation angle is a second angle different from the first angle.

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