| 摘要 |
PURPOSE:To decrease the diameter of a motor sharply by forming a magnetic closed loop where a yoke is provided surrounding a pair of stator coils arranged along the rotating shaft on the both axial ends of a rotor magnet fixed to a rotating shaft. CONSTITUTION:A rotor magnet 24 is fixed to a rotating shaft 26 through a rotor yoke 25. ON the axial extension of a magnet 24 stator coils 20 and 23 are provided, which are surrounded by the first stator yoke 18 & the second stator yoke 19 and by the first stator yoke 21 & the second stator yoke 22 respectively. A closed magnetic circuit is formed at the stator yokes 18 & 19 and 21 & 22 respectively depending on whether the coils 20 and 23 are electrically conducted and depending on the direction of electric charge so that the magnetic efficiency is developed. Thus, the diameter of the motor can be sharply decreased, which is suitable for slimming the equipment.
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