Patent ID: 7277256
Filing Date: 2007-10-02
Classification: G11B

Abstract:
1. An actuator of a hard disk drive, having a base plate and a voice coil motor, to move a magnetic head to record and reproduce data with respect to a disk to a predetermined position on the disk, comprising: a suspension supporting a slider where the magnetic head is mounted; an arm included on the base plate of the hard disk drive to pivot, the arm including the suspension at a leading end portion of the arm and a coil of the voice coil motor coupled to a rear end portion of the arm; and a set of magnets arranged to be separated a predetermined distance from the coil, wherein an area between the magnets is an area of the coil having an effective portion and an area outside of the magnets is an area of the coil having a non-effective portion and, the coil is coupled to the rear end portion of the arm by an outer mold formed to encompass an outer circumference of the coil, an inner mold is formed inside the coil, and a connection mold connecting the outer mold and the inner mold is formed on at least part of a surface of the area of the coil having the non-effective portion and not on the area of the coil having the effective portion, wherein the connection mold is only formed on the outer circumference of the coil on a distal end relative to a pivot hole of the arm.