Patent ID: 8181193

Claim:
A disk chucking device for aligning a rotational center of a disk to a rotor of a motor such that the disk can be mounted and demounted, the disk chucking device comprising: a boss being coupled with the rotor; a first elastic body comprising a leaf spring which has an inner circumference surrounding the boss, the first elastic body having elasticity in a radial direction from a center of the boss; a plurality of second elastic bodies radially disposed from the first elastic body, the plurality of second elastic bodies being elastically supported by the first elastic body; a plurality of chuck pins configured to press the disk, each of the plurality of chuck pins being elastically supported by each of the plurality of second elastic bodies; and a plurality of supporting parts configured to support the first elastic body, wherein the supporting parts are: interposed among the plurality of second elastic bodies, placed alternately with respect to the plurality of second elastic bodies, and support a circumference of the first elastic body.