Motor having characteristic structure in armature and disc apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 10, 2006
Grant Date -
Jul 4, 2002
app pub date -
Dec 11, 2001
filing date -
Dec 28, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a motor which can reduce a generation of a cogging, has a thin size, and can generate a strong torque. In a motor having an armature including a back yoke formed in a cylindrical shape and a wound coil and a magnet formed in a cylindrical shape and magnetized by a plurality of magnetic poles on a cylindrical circumferential surface, the back yoke forms a convex portion protruding from the back yoke toward the magnet in a current switching portion of the coil. The invention further provided a disc apparatus using the motor mentioned above.
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