Patent ID: 7447122

Claim:
A drive unit driving mechanism having a drive unit for playing back disks, a drive base for supporting the drive unit, and drive base movement means that allows the drive base to move into a space that is produced through division of a disk holder that is capable of storing a plurality of disks, comprising: an elastic member that elastically supports the drive unit on the drive base; and a floating lock mechanism that is driven by the drive base movement means and switches between a floating state where the drive unit is supported by only the elastic member and a locked state where the drive unit is fixed to the drive base, wherein the drive unit is provided with a turntable where a disk to be played back is mounted and a disk clamping mechanism that is driven by the drive base movement means and which sandwiches the disk to be played back between the disk clamping mechanism and the turntable; and a single drive source that allows the serial operation of the drive base movement means, the floating lock mechanism and the disk clamp mechanism is provided.