Patent ID: 7732956
Filing Date: 2010-06-08
Classification: H02K

Abstract:
1. A motor comprising: a shaft that serves as a rotation center when a rotor is rotated with respect to a stator; a bearing that supports the shaft in a circumferential direction of the shaft, a thrust bearing that supports one end of the shaft in a thrust direction of the shaft; a magnet that is fixed to the rotor and alternately magnetized to different poles in a rotational direction of the shaft; a core that is fixed to the stator and disposed to face the magnet in a radial direction of the shaft; a coil that is wound around the core and a magnetic shield that shields leakage flux leaking from the magnet to the coil, wherein a magnetic center of the core is offset from a magnetic center of the magnet in the thrust direction, so that the shaft is attracted to the thrust bearing.