| 摘要 |
PROBLEM TO BE SOLVED: To achieve improvement of the vibration degree in a thickness (vertical) direction which a coin-type vibrating motor is not good at. SOLUTION: A coin-type vibrating motor rotates a vibrator by the electromagnetic action on a magnet of the vibrator by magnetization of a rotating coil installed in the inside of the case to cause vibration by a weight of the rotating vibrator. The motor is equipped with: an upper side and a lower side vertically vibrating coils 103A and 103B installed in the upper side and a lower side of the case in the surrounding of a rotary shaft of a vibrator; a vertically vibrating magnet 107 installed in the vibrator while facing to the upper side and the lower side vertically vibrating coils; and a driver IC112 which inverts the polarity of magnetic fluxes generated between the upper side and the lower side vertically vibrating coils by alternating current signals at constant cycles, which are generated by diverging the inputs from two terminals of a positive pole and a negative pole to the rotating coil toward the upper side and the lower side vertically vibrating coils and switching the inputs to the upper side and the lower side vertically vibrating coils, and thus makes the electromagnetic forces by the upper side and the lower side vertically vibrating coils cause mutually inverse actions on the vertically vibrating magnet. COPYRIGHT: (C)2009,JPO&INPIT
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