Patent ID: 8084911

Claim:
A motor comprising: a stator including a stator core having a plurality of teeth and a coil wound around the teeth; and a rotor including a rotor core and a plurality of magnets fixed to the rotor core, the rotor including: a first unit including a first magnet for an N-pole and a second magnet for an S-pole, the first and second magnets being alternately arranged along a circumferential direction of the rotor at equal angular intervals to form a plurality of magnetic pole portions; and a second unit including a third magnet of an N-pole or S-pole and a salient pole arranged in the rotor core, the salient pole functioning as a magnetic pole differing from the third magnet, the third magnet and the salient pole being alternately arranged along the circumferential direction of the rotor to form a plurality of magnetic pole portions, and the number of magnetic pole portions of the second unit being the same as the number of magnetic pole portions of the first unit; wherein the third magnet and the magnet of the first unit having the same pole as the third magnet are aligned in an axial direction of the rotor.