| 摘要 |
PURPOSE:To prevent a magnetic head from being separated from a recording medium by connecting a pair of bimorph piezoelectric elements so that their bending directions are reversed to each other, and arranging the bent planes in parallel with the recording medium. CONSTITUTION:A pair of bimorph piezoelectric elements 18f, 18r fitting the magnetic head 20 are connected so that the polarizing direction of piezoelectric elements 11f, 12f is reversed from that of piezoelectric elements 11r, 11f. The bent displacement planes of the elements 18f, 18r are arranged in parallel with the plane of a magnetic disk 24. When a voltage is applied between bent electric terminals 22, 23 in said constitution, the head 20 is displaced in the radius direction of the disk 24, but the head 20 can be prevented from being separated from the disk because the displacing plane is parallel with the disk plane. |
