| 摘要 |
PURPOSE:To make replacement of an arm easy and to make the arm small-sized and lightweight by laminating and sticking many arms, which hold a magnetic, onto a supporting arm which is shaked with a revolving shaft as the center in a magnetic head positioning mechanism. CONSTITUTION:A supporting arm 8 is so provided that it is shaked with a revolving shaft 3 as the center, and many arms 2 holding a magnetic head 7 are laminated and stuck on the supporting arm 8. When power is supplied to a coil 4 in a magnetic circuit 5, the supporting arm 8 joined with the coil 4 into one body is rotated around the revolving shaft 3. Arms 2 are fixed on the supporting arm 8 by one bolt 10. Therefore, the bolt 10 is removed to replace arms 2 easily and simply. |
