| 摘要 |
PURPOSE:To restrain a cogging torque caused by pulsation of magnetic force generated between a rotor yoke and a stator yoke, and obtain a means capable of precise torque control of a horn. CONSTITUTION:A multilayered board (a) of a stator yoke 14 is laminated so as to be shifted in the arrangement direction of magnets 13 of a rotor yoke 12. Thereby pulsation of magnetic force generated between the rotor yoke 12 and the stator yoak 14 is reduced, and precise torque control of a horn 1 is enabled. |
