Patent ID: 7164559

Claim:
A head actuator adapted for use with a hard disk apparatus operative to rotate a disk, comprising: an arm having a rotary drive section and including an arm pivot portion and an arm tip portion disposed apart from the arm pivot portion, the arm extending generally longitudinally; two plate shaped elastic members attached towards the arm tip portion of said arm with a gap between each other, each elastic member extending generally longitudinally; a magnetic head supported at a tip end portion of each of said elastic members; a boss on the other end of each of said elastic members that protrudes in the direction of the side on which said magnetic head is provided; and a fixing section, which has a hole into which said bosses are inserted, formed on the arm tip portion of said arm, wherein said boss of one of said elastic members is inserted into said hole from one end section thereof, and said boss of the other elastic member is inserted into said hole from the other end section thereof so as to have said fixing section held and fixed between said elastic members, and said elastic members are attached to said arm at an obtuse angle on the arm tip portion with respect to the direction in which said arm extends to form a generally L-shaped configuration, wherein, when the rotary drive section pivots the arm at the pivot portion, the arm, the elastic members and the magnetic heads pivot about a pivot axis in a manner that, in an operative state, forward portions of the elastic members and magnetic heads move to and between an outer periphery of the disk and a radially inner portion of the disk with the disk positioned in the gap between the magnetic heads while the arm, the fixing section, the bosses and rearward portions of the elastic members remain outside of the outer periphery of the disk and, in a non-operative state, the elastic members, the magnetic heads, the fixing section, the bosses and the arm are positioned outside the outer periphery of the disk.