Turntable assembly having disc centering lead springs clamped between upper surface of turntable and an insert-type spring holder

摘要

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.