Patent ID: 7372671

Claim:
A disk apparatus comprising: rotating means for rotating a disk; a head opposing an information-recording surface of the disk; an arm pivoting around a base portion to move the head between an inner circumference of the disk and an outer circumference of the disk; an actuator operating the arm; a rotatable head beam rotating in a first plane supporting the head and retained at a front portion of the arm; an urging member that applies an urging force to the head beam in one direction; and a directing member disposed above the arm and rotating in a second plane around an intermediate portion disposed at a midpoint between a base portion and a front portion, wherein the second plane is substantially parallel to the first plane; the directing member contains a first segment extending from the intermediate portion toward the head, and a second segment extending from the intermediate portion toward the base portion; the urging force is applied to the first segment through the head beam to rotate the directing member in an opposite direction to the head beam; and the second segment is sustained by a fixed supporting point other than the arm.