| 摘要 |
PURPOSE:To avoid shaking of a magnetic head and to miniaturize a magnetic head inverter with its easy production by putting a support shaft of a rotary plate into a through-hole of a head substrate and energizing the rotary plate toward the substrate with plural steel balls and a compression spring. CONSTITUTION:A support shaft 7 set on the surface of a rotary plate 3 attached with a supporter 2 for a magnetic head 1A and an erasion head 1B is put into a through-hole 9 of a head substrate 5. Then three hollow parts 11 and 12 are formed on both sides of the substrate 5 at equal angle distances, and steel balls 13 and 14 are stored in the spaces between the hollow parts and a spring holding plate 21. A compression spring 22 is set between a gear 19 serving as a driv- ing member and the plate 21 to energize the plate 3 toward the substrate 5. Therefore the plate 3 is held stably despite a gap formed between the shaft 7 and the hole 9. Thus the head 1A has no shaking. Furthermore no high accuracy of measurements is needed for the shaft 7 and the hole 9, and the thickness of the substrate can be reduced, thereby attaining the miniaturization of a magnetic head inverter with reduction of cost. |
