Patent ID: 7635935

Claim:
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: a disk-shaped plate body; and an urging piece cut from a center portion of the disk-shaped plate body, the urging piece comprising: a ring-shaped part; and a root part connected to the disk-shaped plate body and to an edge of the ring-shaped part; wherein the ring-shaped part comprises an abutting part at a portion opposite of where the root part connects to the ring-shaped part; the abutting part is abutted with the pressurization face at a portion apart from the recessed part and an abutting width of the abutting part is a width of the abutting part abutted with the pressurization face; the ring-shaped part comprises an opening part formed between the root part and the abutting part; the opening part is formed to face the molding material injection gate trace and an abutting width of the abutting part is set to be wider than a width of the root part; and a width of the ring-shaped part minus a width of the opening part is equal to the width of the root part.