Embedded magnet motor and manufacturing method of the same
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United States of America Patent
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Jul 31, 2012
Grant Date -
May 17, 2012
app pub date -
Nov 15, 2011
filing date -
Nov 28, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an embedded magnet motor, radial magnets and first inclined magnets form north poles. The radial magnets and second inclined magnets form south poles. Core sheets each include preformed radial accommodating slots the number of which is expressed by P/2. Some of the preformed radial accommodating slots are short slots and the rest are long slots. The short slots are located at some parts of each radial accommodating slot along the axial direction. Radially inner ends of the short slots restrict the radial magnets from moving radially inward.
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