MOTOR FOR ROTATIONALLY SUPPORTING A HARD DISK
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Jun 20, 2013
filing date -
Jun 22, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention reduces contamination on a hard disk by adopting a new structural design for a motor. The motor of the present invention includes an adsorption plate portion in a magnetic space of the motor at a radially inward location relative to a disk placing portion on which hard disks are installed. The magnetic space of the motor is defined by a ceiling portion of a rotor hub and the adsorption plate portion. A liquid surface of lubricant of the fluid dynamic bearing mechanism is arranged radially inwardly relative to the adsorption plate portion, and a gap to which the liquid surface is exposed is connected to the magnetic space. The adsorption plate portion is preferably made of stainless steel. At least a portion of the surface of the adsorption plate portion is not covered with paint or other material so as to be utilized as an adsorption area.
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