Permanent magnet type rotating electric machine and manufacturing method of the same
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United States of America Patent
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Oct 13, 2020
Grant Date -
Jul 5, 2018
app pub date -
Feb 27, 2018
filing date -
Mar 16, 2016
priority date (Note) -
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Abstract
A rotor core (21) in a permanent magnet type rotating electric machine (1) is formed by laminating a plurality of plate materials (21A), (21B), (21C), and (21D) and includes one or a plurality of center bridges (26) formed between adjacent magnet slots (23) to couple an outer peripheral edge (24) and a core portion (25) together in one magnetic pole. Non-magnetic portions (30) are formed at a part or all of the one or the plurality of respective center bridges (26). Insulation films (32) are disposed on surfaces of parts other than regions where the non-magnetic portions (30) are formed on the plurality of respective plate materials (21A), (21B), (21C), and (21D) forming the rotor core (21).
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