Recording disk apparatus and clamp therefor
AssigneeFujitsu Limited
InventorsMITSUAKI YOSHIDA, MITSUHIRO IZUMI
Life of this patent
Estimating the term…
Abstract
A recording disk apparatus comprises a recording disk supported by a rotation axis. A clamp is fixed at the tip end of the rotation axis by screws so as to urge the recording disk against a flange at the base end of the rotation axis. The screws are disposed along an imaginary circle concentric to the rotation axis so as to fix a plane body of the clamp at the tip end of the rotation axis. A rigidity reduction mechanism reduces rigidity of the plane body at an intermediate area relative to screw bore areas, which intermediate area defined between the screw bore areas along the imaginary circle. The rigidity reduction mechanism serves to suppress the undulation of the magnetic disk.
Claims13
A recording disk apparatus comprising:
- a rotation axis having a flange;
- a recording disk surrounding the rotation axis;
- a clamp urging the recording disk against the flange;
- screws disposed along an imaginary circle concentric to the rotation axis so as to fix a plane body of the clamp at a tip end of the rotation axis;
- and
- a rigidity reduction mechanism reducing rigidity of the plane body at an intermediate area relative to screw bore areas, said intermediate area defined between the screw bore areas along the imaginary circle.
A clamp for a recording disk apparatus, comprising:
- a plane body with screw bores arranged along an imaginary circle;
- and
- a rigidity reduction mechanism reducing rigidity of the plane body at an intermediate area relative to screw bore areas, said intermediate area defined between the screw bore areas along the imaginary circle.
A clamp for a recording disk apparatus, comprising:
- a plane body with screw bores arranged along an imaginary circle;
- and
- an annular wall raised from a surface of the plane body surrounding the screw bores to have a thickness larger than that of the plane body.
Dependencies are inferred from the claim text.