Hard disk drive actuator assembly with interleaved voice coil motor

摘要

Approaches to a rotary actuator assembly configured for use in a hard disk drive (HDD) include a voice coil interleaved between the pivot bearing and the actuator arm, providing a longer pivot-to-head dimension which reduces the radius of curvature of the arc in which the head slider travels over the disk for accessing portions of the disk. Reducing the arc radius of curvature reduces the maximum skew angles of the read-write head in association with the disk tracks. The width of the actuator arm can be widened to provide improved operating characteristics even in view of the longer pivot-to-head dimension.

主权项

1. A rotary actuator assembly for a hard disk drive, said actuator assembly comprising:
a head slider comprising a magnetic read/write head for reading data from and writing data to one or more magnetic-recording disk; a flexure, with which said head slider is coupled; an actuator arm, with which said flexure is coupled; and an actuating portion configured to move said head slider to access portions of said one or more magnetic-recording disk, said actuating portion comprising:
a distal end with which said actuator arm is coupled,a proximal end housing a pivot bearing, anda voice coil positioned at said distal end between said pivot bearing and said actuator arm; wherein the position of said voice coil between said pivot bearing and said actuator arm provides a lesser skew angle than would otherwise be if said pivot bearing was positioned between said voice coil and said actuator arm.