Invention Grant
- Patent Title: Rotary electric machine with tapered permanent magnet
- Patent Title (中): 带锥形永久磁铁的旋转电机
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Application No.: US13541025Application Date: 2012-07-03
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Publication No.: US09281723B2Publication Date: 2016-03-08
- Inventor: Kenji Watanabe , Toshiyuki Yamagishi , Takashi Nomiyama , Naotake Yoshizawa
- Applicant: Kenji Watanabe , Toshiyuki Yamagishi , Takashi Nomiyama , Naotake Yoshizawa
- Applicant Address: JP Fukuoka
- Assignee: KABUSHIKI KAISHA YASKAWA DENKI
- Current Assignee: KABUSHIKI KAISHA YASKAWA DENKI
- Current Assignee Address: JP Fukuoka
- Agency: Bacon & Thomas, PLLC
- Priority: JP2011-151637 20110708
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K21/12

Abstract:
A rotary electric machine includes a stator; and a rotor including an iron core, which has a tubular connecting portion surrounding a shaft and 10 magnetic pole portions integrally formed with the connecting portion corresponding to a pole number, and a plurality of permanent magnets arranged between the magnetic pole portions. The iron core includes axially-penetrated magnet accommodating air gaps formed between the magnetic pole portions at the radial outer side of the connecting portion, and the permanent magnets are installed in the respective magnet accommodating air gaps such that a radial outer surface of each of the permanent magnets makes close contact with an inner surface of each of the magnet accommodating air gaps and such that a gap exists between a radial inner surface of each of the permanent magnets and the connecting portion.
Public/Granted literature
- US20130009505A1 ROTARY ELECTRIC MACHINE Public/Granted day:2013-01-10
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