Patent ID: 7313801

Claim:
A disk-chucking device of a disk drive, provided to a motor to supply a rotational driving force for chucking a disk to be rotated, the disk-chucking device comprising: a chuck base having a plurality of arranging parts recessed along an outer periphery of the chuck base on which a central void of a disk is correspondingly inserted, and formed at the center of the chuck base with a central boss connected to the motor so that the chuck base can be rotated together with a rotor of the motor; a plurality of chuck pins respectively assembled to the arranging parts so that they can reciprocate in a radial direction; a plurality of spring members elastically supporting a rear end of the chuck pins forwardly such that a leading end of the chuck pins can be exposed to an outer surface of the chuck base; and a rigid frame contacting the spring members at an outer surface of the rigid frame facing the chuck pins such that it can be elastically supported by the other end of the spring members having one end contacting the rear end of the chuck pins, the rigid frame being formed, at the center thereof, with a central hole vertically penetrating the rigid frame such that the central hole has an inner diameter larger than an outer diameter of the central boss, thereby providing a degree of freedom allowing the rigid frame to be moved in a horizontal direction within an allowable range such that the center of the disk can be matched to a rotational center of the motor upon inequality of elastic forces of the spring members; wherein the rigid frame has a plurality of latches formed on the outer surface thereof facing the chuck pins for latching the other end of the spring members.