Disk drive apparatus having a spindle permitting a thinner disk drive

摘要

The disk apparatus comprising a driving pin to be inserted in a driving hole provided on a hub of a disk, for rotating and driving the disk, a spindle to be inserted in a chucking hole provided at a center of said hub of said disk, and a drive source for rotating said driving pin and said spindle. The spindle has contact portions which contact at two positions an inner side of an inner wall of the chucking hole, the spindle being provided with the contact portion on an outer circumference of the spindle to position the disk, and a tip provided with an inclined surface from a height corresponding to a height of said chucking hole to a position having a height lower than the height of the chucking hole, the contact portions having a height substantially corresponding to the height of the inner wall of the chucking hole.