Patent ID: 7159225

Claim:
A disc device with a disc changer comprising: a sub-tray to carry a disc thereon, a main tray to hold a number of sub-trays in an arranged condition, a first motor to drive the main tray and a second motor to drive the sub-tray, a main-tray conveyance unit to horizontally move the main tray between a disc exchange position and a disc waiting position, a sub-tray conveyance unit to horizontally move the sub-tray between the disc waiting position and a disc playback position, a traverse-unit moving unit to select a sub-tray carrying a disc to be played thereon and vertically move a traverse unit to a position of the sub-tray, a disc playback unit to clamp and play the disc on the sub-tray located in the disc playback position, and a gear switching mechanism to connect or disconnect driving channels of the first motor and the second motor are provided, wherein the gear switching mechanism comprises a first cam gear having first and second cam grooves formed therein and is rotationally driven by the first motor, a clutch lever installed in a back-and-forth swingable manner around a pivot fixed to a body frame and having a back edge slidably fitted into the first cam groove of the first cam gear, a second cam gear having a cam groove formed therein and being connected to the traverse-unit moving unit through the cam groove, and a clutch gear pivotally supported by a front edge of the clutch lever and capable of switching of connection to a channel including a transmission gear engaging with a sub-tray rack for conveying the sub-tray to the playback position, or to a channel including the second cam gear and transmission gears connected to the second motor, whereby the traverse-unit moving unit, the sub-tray conveyance unit, and the disc playback unit are selectively driven through the gear switching mechanism only by the second motor.