Patent ID: 7216353

Claim:
A disk-loading apparatus in which a main chassis supports a tray that carries a disk thereon and slides between a disk-discharging position and a disk-loading position, the apparatus comprising: a motor mounted on the main chassis and having a rotating shaft; a worm formed on the rotating shaft; a drive gear rotatably mounted on the main chassis, said drive gear having a first gear and a second gear, the second gear being in mesh with said worm; and a rack formed in the tray and in mesh with the first gear so that when the motor rotates the tray is moved between the disk-discharging position and the disk-loading position; wherein the worm satisfies the following dimensional condition, γ o >Tan −1 (μ/Cos α n ) where γo is a lead angle, μ is a friction coefficient, and αn is a normal pressure angle; and wherein the rotating shaft extends in a direction at an angle with a plane in which the disk moves when the tray moves between the disk-discharging position and the disk-loading position.