Actuator latch of hard disk drive

摘要

An actuator latch of a hard disk drive. The actuator latch includes a locking protrusion installed at the actuator and a latch member rotatably installed on the basis of a predetermined rotation axis. The latch member rotates with the rotation of the actuator when the magnetic head is parked so that a hook intercepts the locking protrusion and prevents it from moving in an opposite direction to a parking direction. Also provided is a latch member driving unit including a lever installed at the latch member to be joined with a yoke of the voice coil motor by a magnetic force when intercepting the moving path of the locking protrusion and a coil to form the same polarity as the yoke with current supplied by a power supply installed at the level. The latch member driving unit rotates the latch member to set free the interception of the movement path of the locking protrusion by the hook. The latch member selectively intercepts the movement of the locking protrusion at the actuator so that the actuator is locked and unlocked. As a result, the actuator can remain stably locked and be softly unlocked without any impact.