Motor having rotors arranged concentrically and driving apparatus having the motor

Abstract

The present invention relates to a motor having yokes concentrically arranged and a driving apparatus having the motor. More particularly, the present invention relates to a motor, in which armature metal cores having coils wound thereon and yokes having magnets attached thereto are arranged in multiple stages around a central shaft, and a driving apparatus having the motor. A motor having yokes concentrically arranged according to an aspect of the present invention comprises a rotor and a stator. The rotor has a plurality of cylindrical yokes arranged in multiple stages in a radial direction and a plurality of magnets respectively fixed to the yokes with polarities of the magnets alternated with each other in a circumferential direction. The stator has armature metal cores arranged to face the respective yokes and a plurality of armature coils wound on the armature cores to face the magnets. A driving apparatus according to another aspect of the present invention comprises the aforementioned motor, a brake disk, and a caliper. The brake disk is fixedly coupled to the rotor of the motor. The caliper is installed to one side of the brake disk to restrain the brake disk from rotating.

Dependencies are inferred from the claim text.