| 摘要 |
<p>PURPOSE:To suppress the invasion of dusts to the minimum limit and to prevent an erroneous operation from occurring by providing a door member and a shutter member separately and constituting a linking mechanism with a lever member and the shutter member. CONSTITUTION:A door device is mainly composed of a front surface plate 1, a door 3, a shutter 7 and a pair of levers 8 as an inserting port forming member. The door 3 is the shape a little larger than a cartridge inserting port 2, formed in an approximately rectangular shape, fitted rockingly through a shaft 4 to a shaft inserting port 13 of the front surface plate 1 in a shaft 4 and always energized in the closing direction by a pair of springs 5. The shutter 7 is formed by an approximate U-shaped thin plate, and an engaging hole 16, to which the engaging projection of the lever 8 is engaged, is drilled at a trailing part 15 of both edges. The lever 8 shows an approximately doglegged shape, an abutting part 17, in which a disk cartridge is abutted, is formed at one edge and an engaging projection 18 engaged with the engaging hole 16 is respectively formed at other edge.</p> |
