| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk fixing member that suppresses deformation of a disk when the disk is fixed because of a deviation between a shape of a disk mount end face being a disk contact part of a hub and a shape of an end face being a disk contact part of a disk retainer (clamper). SOLUTION: In order to facilitate alignment between a center of a turning shaft of a disk retainer and a center of a turning shaft of the hub and enhance its accuracy, a V-shaped recessed part is provided to the center of the turning shaft of the hub, a V-shaped projection of the same shape as the recessed part is provided to part of the disk retainer opposed to the recessed part, using the V-shaped recessed part and the V-shaped projection for a guide of the alignment eliminates a deviation of the disk contact part in the shaft direction so as to avoid deformation of the disk caused by a deviation between a disk mount end face of the hub and a disk mount end face of the disk retainer.
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