Patent ID: 8176504

Claim:
A disk clamping device, comprising: a turntable having a hub integrally provided in a central portion thereof, the hub being inserted into a central hole of an optical disk; a guide unit accommodated in the turntable in such a way as to move linearly, at least portion of the guide unit protruding outwards from the hub and supported by the optical disk, the guide unit being moved linearly by mounting force of the optical disk; a spring provided in the turntable to elastically bias the guide unit in a direction opposite to a direction of insertion of the optical disk; and a chucking plate pressing an upper surface of the optical disk seated on the turntable, thus securing the optical disk to the turntable, wherein the turntable comprises: a coupling holder secured to a rotating shaft of a spindle motor; an inner wall provided to be spaced apart from the coupling holder and a guide hole formed between the inner wall and the coupling holder so that the guide unit is inserted into the guide hole; and a cover for sealing a lower portion of the turntable, and wherein the guide unit comprises: a ring-shaped body part inserted into the guide hole; and a support part provided perpendicularly to the body part, at least portion of the support part protruding out of the hub to support the optical disk.