Claims
- 1. An acoustic noise suppressor for a disc drive, the disc drive having a spinning spindle hub supporting a data disc in rotation, the suppressor comprising:
an annular spacer defining a bore, the spacer comprising a top surface and a bottom surface communicating with the longitudinal extents of the bore, the spacer positionable around the spindle hub so that a portion of the spindle hub is receivingly disposed in the bore, traversing the spacer top and bottom surfaces; and a mass-loading element extending from the spacer opposite the bore, the mass-loading element comprising a top surface and a bottom surface in substantially parallel relation intermediate the spacer top and bottom surfaces.
- 2. The suppressor of claim 1 comprising a characteristic unitary construction.
- 3. The suppressor of claim 2 comprising aluminum.
- 4. The suppressor of claim 1 wherein the mass-loading element comprises a circular member.
- 5. The suppressor of claim 1 wherein the mass-loading element comprises a substantially planar member.
- 6. The suppressor of claim 5 wherein the mass-loading element is substantially equidistantly interposed between the spacer top and bottom surfaces.
- 7. The suppressor of claim 4 wherein the mass-loading element adaptively comprises a diameter substantially less than the data disc diameter.
- 8. The suppressor of claim 7 wherein the mass-loading element adaptively comprises a mass-loading element diameter to data disc diameter ratio of approximately 0.68.
- 9. The suppressor of claim 5 wherein the mass-loading element is substantially non-equidistantly interposed between the spacer top and bottom surfaces.
- 10. The suppressor of claim 1 comprising a characteristic integral construction.
- 11. The suppressor of claim 10 wherein the mass-loading element comprises a polymeric member.
- 12. The suppressor of claim 11 wherein the mass-loading element comprises a constraint layer damping member.
- 13. A disc drive spindle assembly, comprising;
a rotatable spindle hub; a data disc coupled to the spindle hub; an acoustic noise suppressor, comprising:
an annular spacer defining a bore, the spacer comprising a top surface and a bottom surface communicating with the longitudinal extents of the bore, the spacer positioned around the spindle hub so that a portion of the spindle hub is receivingly disposed in the bore, traversing the spacer top and bottom surfaces; and a mass-loading element extending from the spacer opposite the bore, the mass-loading element comprising a top surface and a bottom surface in substantially parallel relation intermediate the spacer top and bottom surfaces; and a disc clamp clamping the data disc and the suppressor in axial alignment for fixed rotation with the spindle hub.
- 14. The disc drive spindle assembly of claim 13 wherein the spindle hub further comprises a radially extending hub flange, wherein the hub flange abuttingly engages the spacer bottom surface and the data disc abuttingly engages the spacer top surface.
- 15. The disc drive spindle assembly of claim 13 wherein the disc clamp abuttingly engages the spacer top surface and the data disc abuttingly engages the spacer bottom surface.
- 16. The disc drive spindle assembly of claim 13 wherein the suppressor comprises a characteristic unitary construction.
- 17. The disc drive spindle assembly of claim 13 wherein the suppressor comprises a characteristic integral construction.
- 18. The disc drive spindle assembly of claim 17 wherein the mass-loading element comprises a polymeric member.
- 19. The disc drive spindle assembly of claim 18 wherein the mass-loading element comprises a constraint layer damping member.
- 20. A disc drive, comprising:
an enclosure; a motor supported by the enclosure and spinning, in turn, a data disc; and suppressor means interposed between the spinning data disc and a portion of the enclosure for suppressing acoustic noise generated by the spinning data disc.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of United States Provisional Application No. 60/199,042 entitled INTEGRAL DISC DRIVE SPACER AND DISC, filed Apr. 21, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
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60199042 |
Apr 2000 |
US |