LINEAR VIBRATION ACTUATOR IMPROVING VIBRATION FORCE BY INCREASING AN ELECTROMAGNETIC FORCE OF A VIBRATION UNIT

摘要

PURPOSE: A linear vibration actuator is provided to obtain stable vibration by distributing the vibration force of the vibration to a case through a spring.;CONSTITUTION: A spring deliveries the vibration to a case(20). A vibration unit(40) generates the vibration to the spring. A coil(50) forms electromagnetic force to the vibration unit. The vibration unit includes a yoke, an outer magnet, a plate, an inner magnet, and a pole piece. The yoke is suspended on the spring to increase the electromagnetic force. The outer magnet and the plate are combined in an edge of a yoke. The inner magnet and the pole piece are combined with the outer magnet and the plate.;COPYRIGHT KIPO 2010