US Patent 7472408 Disk apparatus

A disk apparatus moves a traverse unit vertically, a spindle motor is allowed to approach a base body or a lid, a disk is pressed by the spindle motor and the lid, thereby mounting the disk on the spindle motor. When the spindle motor is moved upward, a tip end surface of a convex portion of the lid is inclined, the tip end surface of the convex portion of the lid and the spindle motor are substantially in parallel to each other, and the disk can stably be mounted.