MAGNETIC DISK DEVICE
A magnetic disk device performs yaw angle correction of a magnetic head is compact, and performs yaw angle correction without changing the arm length. A suspension is rotatably provided on the tip of an arm which is rotated by a rotating actuator and an interconnection device is provided, one end of which is connected to a fixed shaft fixed on a housing, the other end of which is connected to a rotating shaft of the suspension, and which, by means of rotation of the arm, causes rotation of the suspension about the rotating shaft in the direction opposite the direction of rotation of the arm.
1 . A magnetic disk device, comprising:
a magnetic disk;
a spindle motor, which rotates the magnetic disk;
a rotating actuator, which rotates an arm;
a suspension, rotatably provided at a tip of the arm;
a magnetic head, provided at a tip of the suspension; and
a interconnection mechanism, one end of which is connected to a fixed shaft fixed to a housing, the other end of which is linked to a rotating shaft of the suspension, and which, through rotation of the arm, causes the suspension to rotate about the rotating shaft in a direction opposite a rotation direction of the arm.
2 . The magnetic disk device according to claim 1 , wherein the interconnection mechanism comprises a link mechanism, one end of which is rotatably provided on the fixed shaft, and the other end of which is mounted on the rotating shaft.
3 . The magnetic disk device according to claim 2 , wherein the link mechanism comprises:
a first link member, one end of which is rotatably provided on the fixed shaft; and
a second link member, one end of which is mounted via a joint on the other end of the first link member, and the other end of which is mounted on the rotating shaft.
4 . The magnetic disk device according to claim 2 , wherein the rotating shaft is provided at a position different from the rotating shaft of the rotating actuator.
5 . The magnetic disk device according to claim 1 , wherein the interconnection mechanism comprises a gear mechanism, which, by means of the rotation of the arm, rotates the suspension about the rotating shaft in the direction opposite the rotation direction of the arm.
6 . The magnetic disk device according to claim 5 , wherein the gear mechanism comprises:
a third gear fixed on the fixed shaft;
a second gear rotatably provided on the arm and meshing with the third gear; and
a first gear mounted on the rotating shaft and meshing with the second gear.
7 . The magnetic disk device according to claim 6 , wherein the fixed shaft is provided in the same center position as the rotating shaft of the rotating actuator.
8 . The magnetic disk device according to claim 1 , wherein the interconnection mechanism comprises a belt mechanism which, by means of the rotation of the arm, rotates the suspension about the rotating shaft in the direction opposite the rotation direction of the arm.
9 . The magnetic disk device according to claim 8 , wherein the belt mechanism comprises:
a second pulley fixed to the fixed shaft;
a first pulley mounted on the rotating shaft; and
a belt stretched over the first and second pulleys.
10 . The magnetic disk device according to claim 9 , wherein the belt comprises a steel belt.
11 . The magnetic disk device according to claim 9 , wherein the fixed shaft is provided in the same center position as the rotating shaft of the rotating actuator.
12 . The magnetic disk device according to claim 1 , wherein the magnetic disk comprises a perpendicular magnetic recording medium, and the magnetic head comprises a perpendicular magnetic recording element.
13 . The magnetic disk device according to claim 12 , wherein the perpendicular magnetic recording element comprises an element which forms a rectangular magnetic pattern in the perpendicular magnetic recording medium.