| 摘要 |
PURPOSE:To attain centering with high accuracy, by pressing the inner circumference of a center hub to a center shaft of a spindle with a driving pin inserted to a driven hole. CONSTITUTION:A driving pin 2 is provided in the tilted state to the center direction of the spindle 1 and a habit to shift is given to project always with a spring 3. Thus, when the center hub 7 loaded with the magnetic disc cassette is pressed down to the spindle 1, a driven hole 7b and the driving pin 2 are not coincident at first, but then they are mated in the accompany with the turning of the spindle 1. In taking the diameter of the pin 2 smaller than that of the hole 7b, the pin 2 is mated in the hole 7b with a tilt and since the pin 2 is pressed with the spring 3, the turning is delivered while the center hub 7 is pressed on one side of a projection 1a of the spindle 1. |
