Patent ID: 6448675
Filing Date: 2002-09-10
Classification: H02K

Abstract:
A rotational balancing structure for an A.C. motor, comprising:a casing comprising an axle seat, a balancing sheet being mounted around the axle seat; a stator comprising plural silicon plates wound around by a winding, the stator further comprising a central hole, the stator being mounted on the casing; an insulating ring for isolating the stator from the balancing sheet, the insulating ring having a central hole; a rotor comprising an induction ring, the induction ring being received in the central hole of the stator, the induction ring comprising an end face, an insulating layer formed on the end face of the induction ring, a permanent ring magnet being adhered to the insulating layer, the permanent ring magnet and the balancing sheet fixed on the casing attracting each other.