Structure of a flat-type brushless dc motor

Details Structure of a flat-type brushless dc motor Structure of a flat-type brushless dc motor

H - Electricity

02

K

310/73

H02K 1/06 (2006.01) G11B 19/20 (2006.01) H02K 7/08 (2006.01) H02K 7/09 (2006.01) H02K 29/06 (2006.01) H04N 5/781 (2006.01)

Patent

CA 1288461

ABSTRACT OF THE DISCLOSURE A flat type DC motor applicable for disc drive of an electronic still camera in which vibrations of the rotor axle are prevented without increasing manufacturing costs by providing the magnetic field between the stator and rotor to be asymmetrical so that the magnetic attracting force of the rotor to the stator is also asymmetrical. The asymmetrical attracting force causes the axle of the rotor to be urged in the same radial direction relative to the axle bearing in the stator, thus, movements of the axle in radial directions in the clearance between the axle and bearing of the stator are eliminated and the rotor rotates without vibrating.

561043

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