ELECTROMAGNETIC VIBRATION ACTUATOR

摘要

An electromagnetic vibration actuator is provided to make a repulsion force of lifting a heavy object, identical to an attraction force of pulling down the heavy object when the heavy object vibrates about a reference position according to the structure design of the vibration actuator. An electromagnetic vibration actuator includes an electromagnet(13) and an electromagnetic part. The electromagnet(13) includes a magnetic body which a U-shaped section having a flange part(11a) extending inward, and a winding wound around the central shaft(11b) of the magnetic body. Current is selectively provided to the winding. The electromagnetic part includes a permanent magnet formed on the shaft(11b) to generate a stable magnetic field.