Motor bearing arrangement and electric motor using the same
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United States of America Patent
Stats
-
Dec 14, 1999
Grant Date -
N/A
app pub date -
May 14, 1998
filing date -
May 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a bearing arrangement including a thrust bearing and a radial bearing, the thrust bearing includes a first thrust plate which is fixedly secured to a stator plate, and the radial bearing is integrally attached to the first thrust plate of the thrust bearing. Because the radial bearing is directly attached to the first thrust plate of the thrust bearing, the perpendicularity of the radial bearing with respect to the thrust support surface can be easily ensured. Also, the first thrust plate normally consists of a highly rigid member, and this also contributes in the favorable perpendicularity of the radial bearing with respect to the thrust support surface. This bearing arrangement is useful in a spindle motor for turning a floppy disk in a floppy disk drive.
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