Patent ID: 6753631
Filing Date: 2004-06-22
Classification: F16C,H02K

Abstract:
A magnetic levitation motor comprising:at least one rotor with a rotor magnet magnetized in multiple poles; and at least one stator confronted with the rotor while supporting the rotor in a freely rotatable and non-contact manner, the stator having rotor driving coils disposed opposing to the rotor magnet for generating a rotational torque on the rotor, and bearing coils for generating a bearing force in a direction perpendicular to a rotational axis of the rotor, wherein the rotor driving coils and the bearing coils are shifted with respect to one another in a circumferential direction to avoid overlapping with one another such that portions of the coils located in a region where the stator confronts the rotor are arranged to avoid overlapping with one another, and portions of the coils in a region where the stator does not confront the rotor are permitted to overlay with one another, and wherein the number of rotor driving coils equals the number of bearing coils.