Spindle motor assembly for low acoustic noise environments
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United States of America Patent
Stats
-
May 23, 1989
Grant Date -
N/A
app pub date -
Dec 17, 1987
filing date -
Dec 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mounting structure for a spindle motor assembly is disclosed that is capable of reducing acoustic noise generated by the motor assembly. Standard spindle motor assembly parts are provided with a viscoelastic stator mounting system that isolates and damps vibrations between the rotor assembly and the rest of the spindle motor assembly. Additionally, rotor slots are provided in the rotor cap. The slots are designed to ensure that the resonant frequency of the rotor cap is substantially different than the switching frequency of the motor itself.
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Family
International Classification(s)
Cited Art Landscape
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