Patent ID: 7635935
Filing Date: 2009-12-22
Classification: F16C,H02K

Abstract:
1. A motor comprising: a rotor having a rotor shaft to which a permanent magnet is fixed; a stator which is formed with a rotor insertion hole into which the rotor is inserted; a bearing holder which is fixed to one end of the stator and is formed with a bearing hole; a bearing made of resin which is provided in the bearing hole for rotatably supporting one end part of the rotor shaft; and an urging member which is attached to the bearing holder and abutted with a pressurization face of the bearing opposite to a rotor shaft support face of the bearing to urge the bearing toward a side of the rotor shaft; wherein a molding material injection gate trace which has been used when the bearing is resin-molded is positioned at a center portion of the pressurization face; the bearing comprises a recessed part which is formed at a roughly center position of the pressurization face; the urging member comprises: