| 摘要 |
In the present invention, a coil is disposed in an axial direction of a rotor magnet, outer and inner magnetic poles to be magnetized by the coil are opposed to outer and inner peripheral surfaces of the rotor magnet, and holding means for holding the centers of the magnetized portions of the magnet at positions deviated from the straight line connecting between the centers of the outer magnetic poles and the rotational center of the magnet when the outer and inner magnetic poles are not magnetized, thereby realizing a single phase motor. When the single phase motor is constructed, a weight having imbalanced mass with respect to a rotational center is attached to a rotary shaft of the motor, and the weight secured to the rotary shaft is covered by a cylindrical cover within which the outer magnetic poles are secured, so that stable vibration can be generated, thereby providing a super-compact motor having high output for a destination informing apparatus. <IMAGE> |
