| 摘要 |
PURPOSE:To smoothly move a pickup without causing any tracking error, by the constitution that a driving lever supporting a pickup and an auxiliary lever linked freely rotatably with the driving lever have the center of rotation to the radial direction of a disc and move almost in parallel. CONSTITUTION:A driving lever 17 is turned clockwise via a gear 21, and a gear part 171 of the driving lever 17 through the rotation of a motor 20 for a disc table 12, and a support lever 15 and an auxiliary lever 18 linked to the driving lever freely rotatably are moved both toward the arrow, and a pickup 14 is moved from the inner to the outer circumference of the disc 13. The center of rotation between the driving lever 17 and the auxiliary and support levers 18 and 15 is on a dynamic diametrical line of the disc 13 during the movement at all times, then the pickup 14 can be smoothly moved without any tracking error. |
