| 摘要 |
A motor is provided to reduce noise and vibration by reducing influence of harmonic and a cogging torque. A motor includes a stator and a rotor. The rotor includes a base part, a sidewall part, and a plurality of permanent magnets(160). The base part and the sidewall part are made of a magnetic material. The sidewall part is vertically extended from the base part. A bending part is formed in the sidewall part in order to reinforce strength of the sidewall part. A plurality of permanent magnets is arranged in an inner surface of the sidewall part according to a columnar direction. Thickness(t1) of a central part of the permanent magnet is thicker than thickness(t2) of a peripheral part. A distance between an inner surface of the base part and a bottom end of the permanent magnet is larger than thickness of a radius direction of the permanent magnet.
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