FIXING STRUCTURE FOR MAGNETIC DISK

PURPOSE:To uniform pressure over the whole periphery of a disk and to prevent abrasion particles from being generated as well by overlapping two rings for which one ring is equipped with elasticity at least, pressing the disk by one ring and fitting the other ring to a shaft part to prevent the disk...

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Bibliographic Details
Main Author ADACHI AKIYOSHI
Format Patent
LanguageEnglish
Published 09.08.1991
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To uniform pressure over the whole periphery of a disk and to prevent abrasion particles from being generated as well by overlapping two rings for which one ring is equipped with elasticity at least, pressing the disk by one ring and fitting the other ring to a shaft part to prevent the disk side ring from dropping off. CONSTITUTION:The two rings are used while being overlapped, and the outer peripheral part of a ring Rd on a disk 5 side is abutted on the disk 5 and presses the disk 5. By a pressing ring Rp fitted to a fitting shaft part 11, while preventing the ring Rd from being released or dropped off, the disk 5 is pressed and fixed. Since the elasticity is provided on one of the two rings at least, even when the pressure of the disk 5 is made ununiform on a certain place, this imbalance is absorbed and distributed by the elasticity. Concretely, the elasticity is provided for the ring Rd, the outer peripheral part 12 is protruded to the disk 5 side and only this projecting part 12 is abutted on the disk 5. The ring Rp is composed of a rigid body and in the inner peripheral part, a projection 15 is provided to be inserted to an axial direction groove 14 and a peripheral direction ring-shaped groove 13.
Bibliography:Application Number: JP19890322204