| 摘要 |
PURPOSE:To move surely a tone arm vertically with simple mechanisms by providing a grooved lifter part in one body with a turning member which is turned in the stage of moving the tone arm vertically. CONSTITUTION:In the case of moving a tone arm upward, a turning member 9 turns at one end of a driving member, then the ridgeline 9C1 in the bottom part of a groove 9C abuts on the shaft 5 of a tone arm device 1; thereafter, the tone arm is moved upward by the ridgeline 9C1. Further, when the member 9 turns, the width of the groove 9C is narrower than the diameter of a shaft 5; therefore, the shaft 5 is sandwiched by the ridgeline 9C2 in the side part of the groove 9C. thus, in the stage of moving the tone arm upward with the ridgeline 9C1 in the bottom part of the groove 9C, a tracking error is corrected by the ridgeline 9C2 in the side part of the 9C even if said error arises in the tone arm. |
