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US 10,872,635 B2Granted
Spacer and hard disk drive apparatus
AssigneeHoya Corporation
InventorMasao Takano
Life of this patent
Estimating the term…
Abstract
When removing magnetic disks and spacers from a hard disk drive apparatus, as necessary, during the assembly of the hard disk drive apparatus, in order to suppress the occurrence of removal failures when removing the spacers using a gripping jig, a surface roughness Rz of an outer circumferential edge surface of a spacer is set to be at least 1.5 μm.
Claims20
A ring-shaped spacer to be arranged in contact with a magnetic disk in a hard disk drive apparatus,
- wherein a maximum height surface roughness Rz of an outer circumferential edge surface of the spacer is at least 1.5 μm, and
- a skewness of the outer circumferential edge surface is not larger than 1.2.
A hard disk drive apparatus comprising:
- a ring-shaped spacer arranged in contact with a magnetic disk in the hard disk drive apparatus,
- wherein a maximum height surface roughness Rz of an outer circumferential edge surface of the spacer is at least 1.5 μm, and
- a skewness of the outer circumferential edge surface is not larger than 1.2.
Dependencies are inferred from the claim text.