Patent ID: 7918488

Claim:
A disk chucking mechanism for chucking a disk having a center hole by engaging an inner periphery or an outer periphery of the disk, comprising: a forward/rearward actuator; a first link member, a second link member arranged along a longitudinal direction of said first link member and movable forwardly or rearwardly relatively along the longitudinal direction of said first link member, a third link member linked with end portions of said first and second link members, a first chucking nail provided on said third link member and rotatable according to rotation of said third link member, and a spring member provided on said second link member and bendable according to the forward or the rearward movement, wherein said third link member is rotated by moving said second link member forwardly or rearwardly to protrude said first chucking nail in a direction perpendicular to the longitudinal direction of one of said first and second link members such that said nail engages with an inner or outer periphery of said disk and to generate an energizing force for further rotating said third link member by bending said spring member.