A turntable assembly not requiring use of plastic centering hooks, enabling
simplification of the mold structure, and enabling attachment of the leaf
springs imparting elastic spring force in the disk centering mechanism
even after fitting the center hole of the turntable over the motor shaft,
wherein the turntable assembly has a motor having a projecting motor shaft
and a turntable having a center hole into which the projecting portion of
the motor shaft is inserted and a magnet holding groove formed at a disk
hole mating hub around the center hole and holding a permanent magnet for
clamping an information storage disk placed on the turntable in the magnet
holding groove, the disk centering mechanism having a plurality of spring
seats at spring flexing spaces formed at intervals in the circumferential
direction of the disk hole mating hub 21, each of the spring seats being
provided with a centering leaf spring having a vertically descending piece
protruding slightly outward in the radial direction from the outer
circumference of the disk hole mating hub.
