Patent ID: 7802271

Claim:
A disk clamping device comprising: a turntable for mounting a disk, fitted on an output rotation shaft of a motor for rotationally driving the disk; clamp pawls for clamping the disk, rotatably assembled on the turntable, and projectable from a plurality of through holes formed in the turntable; a rotating-and-elevating member disposed on the backside of the turntable, rotatably and in an ascendable and descendable manner in synchronism with the turntable, when going up, causing the clamp pawls to project from the through holes in a disk clamping direction and rotate them, and when going down, causing the clamp pawls to receive into the through holes; an urging member pushing up and urging the rotating-and-elevating member; and a clamp releasing lever moving the rotating-and-elevating member in a pushing-up direction of the member against an urging force of the urging member and in a pushing-down releasing direction of the member; wherein the turntable has pawl-receiving part protrusions each forming a clamp-pawl receiving part which is protruded on the underside of the turntable, and communicates with the through hole; and the rotating-and-elevating member has protrusion-receiving holes formed thereon into which the pawl-receiving part protrusions are fitted at the time of upward movement of the rotating-and-elevating member.