Patent ID: 7414340

Claim:
A motor comprising: a rotor which is provided with a permanent magnet on an outer peripheral face of a rotor shaft; a stator whose inner peripheral face faces an outer peripheral face of the permanent magnet; a first radial bearing which is fixed to an end portion on an output side of the stator for rotatably supporting the rotor shaft on an output side; a second radial bearing which rotatably supports the rotor shaft on an opposite output side; a spring member which is disposed between the first radial bearing and an end face on the output side of the rotor for urging the rotor on an opposite output side; and a thrust bearing plate which is fixed to an end portion on the opposite output side of the stator and with which a shaft end on the opposite output side of the rotor shaft is abutted; wherein the spring member is a coil spring; and wherein a ring-shaped recessed part is formed on an output side end face of the permanent magnet so as to widen along the rotor shaft toward the first radial bearing side, and the coil spring is disposed within the ring-shaped recessed part formed in the permanent magnet.