| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk apparatus for realizing a narrow data track interval by reducing the vibration of a spindle system including the disk vibrated by the air at high speed disk revolutions of the disk apparatus. SOLUTION: An outer circumferential part of a spacer disk 7 is provided with a stream regulating hole 7c including an inflow port 7d, an outflow port 7e, and an inner circumferential opening 7b, and a spindle hub 2 is provided with a circumferential groove 2d located at a position in an axial direction nearly the same as that of the inner circumferential opening 7b in a disk layered state to configure the stream regulating hole 7c integrally with the inner circumferential opening 7b. The stream regulating hole 7c has functions of an exhaust port and a suction port of air to suppress separation of air streams thereby reducing an pneumatic exciting force due to turbulent or vortex. Thus, the disk apparatus for reducing disk vibration is realized. COPYRIGHT: (C)2004,JPO&NCIPI
|
