| 摘要 |
In a motor or an electromagnetic driving device having a first stator yoke excitable by energizing a first coil, a second stator yoke excitable by energizing a second coil and a rotor opposed to the first and second stator yokes to be driven and rotated by energizing the first and second coils, the first and second coils are collectively arranged together in one direction on the outer side of the periphery of the rotor, and the first stator yoke is arranged in a state of being superposed on the second stator yoke to form an electromagnetic driving motor. The electromagnetic driving motor is thus arranged in a novel shape to be capable of preventing a noise of driving transmission while maintaining its adequate performance as an electromagnetic driving motor and to be compactly mountable on a camera or the like for its diaphragm device without any protruding part.
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