Patent ID: 6744164
Filing Date: 2004-06-01
Classification: B60K,B60L,H02K,Y02T,Y10S

Abstract:
A motor, comprising:a rotor, comprising a plurality of first rotator portions, each having a permanent magnet, and one or a plurality of second rotator portions, each having magnetic saliency, at least two of said first rotator portions being separated in a direction of a longitudinal axis of a rotating shaft by at least one of said second rotator portions, at least one of said first rotator portions being magnetically coupled with at least one of said second rotator portions in a field where said first rotator portion and said second rotator portion are in complete magnetic contact without a non-magnetic member disposed therebetween, at least one of said second rotator portions having a plurality of inverted circular arc-shaped notches on a circumferential portion or a substantially circular plate or a substantially cylindrical column, and a full or partial contour portion of at least one of said notches opposes a respective one of said permanent magnet; and a stator which generates a magnetic field for driving said rotor when electric current is supplied.