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Acoustically damped disc drive assembly
| Details |
Inventors: Baker, Jonathan P.; Pottebaum, Kenneth L.;
Assignee: Seagate Technology, Inc. (Scotts Valley, CA)
Primary Examiner: Dzierzynski; Paul M.
Assistant Examiner: Wong; Don
Attorney, Agent or Firm: McCarthy; Bill D., Heller, III; Edward P.
An acoustically damped disc drive assembly having a housing, the disc drive assembly having internally disposed components capable of generating acoustic vibrations, the housing having a cover comprised of a plurality of plate members, each pair of the plate members having a damping layer disposed therebetween for damping acoustic vibrations imparted to the cover by the internally disposed components. In addition to the damping layer, which is preferably a viscoelastic material compositely bonding such plate members together, an acoustic isolator area may be provided to surround the attachment points of the internally disposed components to the cover in order to provide further damping of the acoustic vibrations. |
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DETAILED DESCRIPTION The present invention provides an improved housing for a disc drive assembly having internally disposed components generating acoustic vibrations, the present invention eliminating or substantially reducing the coupling of such acoustic vibrations to the housing.
In the present invention, the housing has a cover comprising a plurality of plate members with damping layers disposed between pairs of plate members, such damping layers damping acoustic vibrations imparted to the cover by the internally disposed components.
The damping layers, preferably of a viscoelastic material, are disposed between each pair of plate members and adhesively bond the plate members together.
In some applications, it may be desirable to incorporate acoustic isolator areas surrounding attachment points of the internally disposed components of the disc drive assembly, such acoustic isolator areas cooperating with the viscoelastic damping layers to further damp the acoustic vibrations.
It is an object of the present invention to provide an improved housing for disc drive assemblies to reduce acoustic noise generated by disc drive assemblies.
Another object of the present invention, while achieving the before-stated object, is to provide an improved housing for disc drive assemblies that is inexpensive to manufacture.
Other objects, features and advantages of the present invention will become apparent from the following detailed description when read in conjunction with the drawings and appended claims.
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Finance 
