| 摘要 |
PURPOSE:To avoid the lateral application of force while a tone arm is moving up as well as to avoid a shift of position while the tone arm is moving down, by using a reverse link to push up the tone arm on a plane during the up-movement of the arm and to hold the arm at a V groove during the down-movement of the arm respectively. CONSTITUTION:No lateral force is applied to a tone arm 1 although the sucking action of a plunger 9 is discontinued to move up the arm 1 when the arm 1 has a tracking error since the edge part 14 of a reverse link 13 is brought into contact with the plane part 12 of the arm 1 while the arm 1 is moving up. When the plunger 9 has a sucking action and the arm 1 is moved down, the arm 1 moves downward with a contact secured between a V groove 2 and the edge part 15 of the link 13. Thus it is possible to avoid the lateral force applied to the arm 1 while it is moving up as well as a shift of position of the arm 1 while it is moving down. |
