| 摘要 |
PURPOSE: A vibration generator shaking in a rotational direction is provided to enhance the control power of a resonant frequency without expensive magnetic fluid. CONSTITUTION: A vibration generator shaking in a rotational direction comprises a stator and a vibrator. The stator comprises a base(11), a case(12), a current applying unit(17), a coil(30) and a shaft(13). The base and the case form an outer frame. The current applying unit and the coil are coupled to the base. The shaft is coupled to the base or the center of the case. The vibrator comprises a magnet(42) and a heavy member(44). The magnet is coupled to the heavy member. The vibrator rotates on the shaft of the stator. In a state a part of a circle is cut and thus a space is formed, the vibration generator makes vibration in a rotational direction by a spring installed in the space.
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