Brush-less dc motor

Details Brush-less dc motor Brush-less dc motor

H - Electricity

02

K

310/78, 318/96

H02K 29/00 (2006.01) H02K 3/00 (2006.01) H02K 29/08 (2006.01)

Patent

CA 1094626

ABSTRACT OF THE DISCLOSURE A brush-less DC motor includes a stator member; a stationary cylindrical member projected from the stator member and having bearings on its inner circumferential surface; a rotary shaft being rotatably supported by the bearings of the stationary cylindrical member; a rotary cylindrical member into which the stationary cylindrical member is inserted, and to which the rotary shaft is fixed; two rotary discs of magnetic material, fixed to the rotary cylindrical member and spaced from each other; a permanent magnet fixed to one of the rotary discs; a rotational-position detecting member; and a coil assembly including a plurality of coil units; The working point of the rotary shaft is nearer to the stationary cylindrical member than to the rotary cylindrical member.

289912

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