| 摘要 |
PURPOSE:To grasp and set a magnetic disc automatically by only inserting the disc in a device, by moving a cone toward a driving hub with a detection signal when the inserting state of the magnetic disc is at the normal position. CONSTITUTION:When a tip of an inserted floppy disc 4 comes to a position P1, a detection signal by a photo coupler 52 is outputted and a DC brushless motor (not shown) is started and a driving hub 14 is rotated. In parallel with the detecting operation by the photo coupler 52, an operating piece 65 of an ejection plate 54 kicks on a microswitch 64 to absorb a cone load solenoid 41. Thus, a ridig plate 38 moves in parallel with an auxiliary plate 13 while deforming plate springs 39 and 40 and carries a cone 30 toward the driving hub 40. Further, the floppy disc 4 turns accompanied with the rotation of the driving hub 14 under the depressing force of a coil spring 35. |
