Method and apparatus for fine tuning disc drive cover to improve acoustical performance
AssigneeSeagate Technology LLC
InventorsMatthew Daniel, Svetlana I. Kovinskaya
Life of this patent
Estimating the term…
Abstract
A disc drive system includes a base with sidewalls, a spindle attached to the base, and at least one disc attached to the spindle. A cover is also included for attaching to the base. The cover and the base form a disc enclosure which encloses the at least one disc, a portion of the spindle, and the actuator assembly. The disc drive system also includes a cover that is the prime acoustical radiator from the disc drive. The cover includes at least one dampening member attached by the adhesive. The dampening member is provided with a cut or slit therein to shift the resonant frequency of the cover. The cut increases area with high value of shear deformation in the adhesive and increases the loss factor.
Claims25
A disc drive comprising:
- a base;
- a spindle attached to the base;
- at least one disc attached to the spindle, the spindle adapted to rotate with respect to the base plate;
- and
- a cover attached to the base to form a disc enclosure which encloses the at least one disc, the cover further comprising:
- a main cover portion;
- and
- a dampening member portion attached to the main cover portion, the dampening member portion being cut into at least two portions to shift the resonant frequency of the cover.
A disc drive comprising:
- a base;
- a spindle attached to the base;
- at least one disc attached to the spindle, the spindle adapted to rotate with respect to the base;
- and
- a cover attached to the base to form a disc enclosure which encloses the at least one disc, the cover further comprising:
- a main cover portion;
- and
- a first dampening member portion fitting within a recess in the cover;
- a second dampening member portion fitting within a recess in the cover, wherein one of the first and second dampening member portion is cut into at least two portions to shift the resonant frequency of the cover.
A disc drive system comprising:
- a base plate;
- a spindle attached to the base plate;
- at least one disc attached to the spindle, the spindle adapted to rotate with respect to the base plate;
- an actuator assembly attached to the base plate;
- and
- a cover attached to the base plate, the cover further including means for lessening acoustical emissions produced by the disc drive.
Dependencies are inferred from the claim text.