Disk driving apparatus

Details Disk driving apparatus Disk driving apparatus

1990-06-26

1992-05-12

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384107, 384122, F16C 1710, F16C 3206

Patent

active

051121417

ABSTRACT:
A disk driving apparatus has, a chassis, a fixed shaft having one end attached to the chassis, a hub rotatably mounted around an outer circumferential surface of the fixed shaft and at least one disk mounted on an outer circumferential surface of the hub, the other end of the fixed shaft having a stopper thereon for engaging the hub for retaining the hub on the fixed shaft, a disk fixing plate positioned over the other end of the fixed shaft and fixing the one disk to the hub and having a surface opposed to the other end of the fixed shaft, a thrust bearing element movably mounted between the disk fixing plate surface and one of the other end of the fixed shaft and the stopper, and a hydrodynamic pressure generating groove formed in one of a herringbone pattern and a helical pattern and being on one of an outer circumferential surface of the fixed shaft and an inner circumferential surface of the hub.

REFERENCES:
patent: 4200344 (1980-04-01), Binns et al.
patent: 4557610 (1985-12-01), Asada et al.
patent: 4573807 (1986-03-01), Asada et al.
patent: 4696584 (1987-09-01), Tielemans

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