Patent ID: 7804665
Filing Date: 2010-09-28
Classification: G11B

Abstract:
1. A head support device comprising: a head slider having a signal transducer; a head support arm having first end coupled to the head slider; a voice coil coupled to a second end opposite to the first end of the head support arm with respect to a horizontal rotary shaft, which rotates the head support arm in parallel with a recording disk surface; a pair of pivots forming a vertical pivot axis about which the head support arm pivots vertically with respect to the disk surface; and an elastic mechanism for generating load which urges the head slider toward the disk surface about the vertical pivot axis as a center, wherein a gravity center position of a total mass of members, other than the head slider, that pivot about the vertical pivot axis substantially agrees with a position of the vertical pivot axis, wherein gravity center position δ is placed in a region defined as and formed of the head support arm as a coordinate axis, the vertical pivot axis as an origin, the head slider side as a positive region, and the other side of the head slider side as a negative region, wherein a moving amount of the head slider upon receiving an allowable maximum impact acceleration along a direction perpendicular with respect to the disk for pivoting the head support arm to approach the disk is δ wherein a moving amount of the head slider upon receiving the allowable maximum impact acceleration along a direction perpendicular with respect to the disk for pivoting the head support arm to move away from the disk is δ wherein assuming that a smaller one between δ