Rotor having permanent magnet and method of manufacturing the same
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United States of America Patent
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May 16, 2017
Grant Date -
Mar 5, 2015
app pub date -
Sep 2, 2014
filing date -
Sep 5, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rotor having permanent magnets 10 includes: a laminated core body 13 having a shaft hole 12 in the center thereof and magnet insertion holes 15 around the shaft hole 12; permanent magnets 16 disposed in the respective magnet insertion holes 15; and first and second end face plates 18, 19 disposed on one axial end and the other axial end of the laminated core body 13, respectively, the first and second end face plates 18, 19 including first and second through holes 32, 33, respectively. The first and second through holes 32, 33 each overlap a contour of a magnet insertion hole 15 on a radially inner side or a radially outer side in a plan view, and have first and second tapered portions 34, 35 gradually expanding the diameter toward the magnet insertion hole 15, respectively.
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