DISK AND TURNTABLE

摘要

PURPOSE: A disk and a turntable are provided to realize a simple and stable thin type disk drive by reducing the thickness of the disk drive by removing an extra clamp member clamping the disk mounted on the turntable. CONSTITUTION: A disk(100) includes a hub(110) formed of a magnetic material in the center of the disk, and a protruded part(120) formed of the magnetic material in the center of the hub, having a ring shape longitudinal section. The disk is detachably mounted on a turntable(200) formed on the top of a spindle motor(300). The turntable has a groove part(201) formed corresponding to the protruded part, so that the disk directly mounted on the turntable is clamped by the protruded part and groove part.