| 摘要 |
PURPOSE:To fit a center core to a rotary driving part precisely by fitting an energizing member to the center core of a recording carrier to the rotary driving part and actuating the energizing member by interlocking with the loading operation of the recording carrier. CONSTITUTION:A magnetic sheet jacket 2 is inserted into a jacket holder 21 and descended in the A direction. As the holder 21 is descended, a pin 31 engaged with the long hole part 21 of the holder 21 is moved in the A direction and then a lever 29 is turned in a D direction. Since the lever 26 is contacted with the abutting part of a projection part 23b of an arm 23 at its end part 26a, a lever 23 is turned around a shaft 24 in an E direction and the center core 3 is pressed at the end part 23a and pushed into a spindle 8. In this case, the interval lbetween the lower surface of the center core 3 and the flange surface 8a of the spindle 8 is adjusted so as to be zero. Since the center core 3 is usually made of plastic and the variance of the inner diameter is large to fit the spindle 8, the unfluene of the variance is eliminated by designing the inner diameter to be small. |
