Disk apparatus and disk holder for use in the same

摘要

A disk apparatus has a playback unit. In the playback unit, a drive plate having thereon a turntable and a spindle motor is compulsively mechanically driven by drive cams of a first and second driving plates, and then mechanically locked at a lower position or upper position. A clamp arm having a clamper is driven toward the drive plate with a biasing force of a spring, and resiliently locked at an upper position or lower position. A disk engaging section for engaging in a disk hole of a disk is formed on the clamper. A projection which is adapted to project through the disk engaging section is formed on the turntable. Thereby the disk is well chucked and the disk apparatus is ensured to perform a stable operation. <IMAGE>