Patent ID: 7808745
Filing Date: 2010-10-05
Classification: G11B

Abstract:
1. A hard disk drive comprising: a base; a head stack assembly (HSA) mounted to the base so as to be rotatable about an axis of rotation, the HSA including a swing arm, a head slider having a read/write head attached to one end of the swing arm, and a voice coil support integral with the swing arm; a voice coil wound on the voice coil support; a voice coil motor (VCM) block mounted to the base, the VCM block having an upper section and a lower section respectively disposed above and below the voice coil support, the upper section having a through-hole extending therethrough in a direction substantially parallel to the axis of rotation of the HSA; a first screw fixing the lower section of the VCM block to the base; a second screw fixing the upper section of the VCM block to the lower section of the VCM block; and a crash stopper offset from the first and second screws in a plane perpendicular to the axis of rotation of the HSA, the crash stopper extending through the through-hole of the upper section of the VCM block and into a space defined between the upper and lower sections of the VCM block, and the crash stopper being located to limit the rotation of the HSA in one direction about the axis of rotation.