MECHANISM FOR PRESSING CARRYING ROLL

摘要

PROBLEM TO BE SOLVED: To reduce the power consumption of a driving motor by reducing the operation force of a slide plate which controls a disk carrying roll. SOLUTION: Parallel planes 31 which has the body part 21 of a bearing bush 20 of a carrying roll 11 provided in positions opposed to them are fitted to slide faces 30 louvered in both linear parts facing each other of a channel- shaped cut 29 of a flat spring 14 to stop whirl of the planes 31, and the elastic force of the flat spring 14 is made to act perpendicularly on the planes 31. The flat spring 14 is fixed to a cross beam frame 12 connecting right and left roll arms 13, and the roll arms 13 which freely slidably support the bearing bush 20 within a small-sized long hole 19 allowing elastic displacement are turned with a cam follower 15 prescribed by a cam groove 16 and make the elastic force of the flat spring 14 act on the carrying roll 11 in prescribed positions close to an upper guide plate 17, which holds a disk 18 between roll arms 13 and itself, to press the disk 18 between the roll arms and the upper guide plate 17.