Patent ID: 7757244

Claim:
A disc apparatus including: a chassis that is fixed to an apparatus cabinet; a traverse mechanism that can, by being driven by a motor via a plurality of gears, ascend and descend in a predetermined direction relative to the chassis; a pick-up unit that has an optical pick-up, that is provided in the traverse mechanism, and that can, by being driven by the motor, move in a direction substantially perpendicular to the direction in which the traverse mechanism ascends and descends, and a tray that transports a disc in a front/rear direction, the disc apparatus comprising: a cam slider that is provided in front of the traverse mechanism on the chassis so as to be able to move in a left/right direction substantially perpendicular to both the direction in which the traverse mechanism ascends and descends and the direction in which the tray transports the disc; and a shift lever that makes, by cam-engaging with the cam slider, the traverse mechanism ascend and descend, the shift lever being provided integrally with the traverse mechanism under a front part thereof such that a predetermined gear of the plurality of gears is held between the traverse mechanism and the shift lever, wherein the shift lever has, on top faces of left and right ends thereof, cylindrical base columns, the base column provided at the right end of the shift lever has ribs that protrude radially leftward, rightward, and frontward from a circumferential face of the base column, a screw with which the shift lever is fitted to the traverse mechanism, the predetermined gear, and the base column are concentric, and the predetermined gear is rotatably fitted around a cylindrical protrusion formed on a bottom of an outer edge part of the traverse mechanism in front thereof, a bottom end of a sleeve protruding from a bottom face of the predetermined gear makes contact with the ribs such that front-left and front-right parts of the predetermined gear are rotatably supported, and a rear part of the predetermined gear is rotatably supported by the gears other than the predetermined gear.