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Patent Searching and Data


Title:
ROTOR CORE AND MOTOR HAVING SAID ROTOR CORE
Document Type and Number:
WIPO Patent Application WO/2021/137275
Kind Code:
A1
Abstract:
An embodiment of the present invention provides a rotor core and a motor having the rotor core. Using a configuration in which a plurality of magnetic pole core groups are provided in the circumferential direction of a rotor yoke, and each of the magnetic pole core groups have a magnetic conductor in the center with a plurality of permanent magnets around the magnetic conductor, the overall structure is compact and reliable, making a separate mechanical structure to maintain the rigidity of the rotor unnecessary. Also, with a manufacturing method of the magnetic pole core group, mass production and manufacturing are easy without cumulative error occurring in manufacturing or assembly. The center of each magnetic pole core group is configured by a magnetic conductor, and it is therefore possible to maximize the reduction in the amount of magnet use, low cost is realized, and by providing the plurality of permanent magnets around the magnetic conductor, it is possible to increase the magnetic flux concentration effect while preventing magnetic flux leakage, making it thereby possible to establish both high efficiency and high performance of the motor.

Inventors:
YAN GUO-JHIH (TW)
WU KENG CHANG (TW)
WANG KUO-MIN (TW)
Application Number:
PCT/JP2020/037351
Publication Date:
July 08, 2021
Filing Date:
September 30, 2020
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
H02K1/27
Foreign References:
JP2010161897A2010-07-22
JP2009106051A2009-05-14
JP2006158008A2006-06-15
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