Invention Grant
- Patent Title: Rotor for rotary electric machine
- Patent Title (中): 旋转电机转子
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Application No.: US13364383Application Date: 2012-02-02
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Publication No.: US08890385B2Publication Date: 2014-11-18
- Inventor: Shinya Sano , Akifumi Kurokawa
- Applicant: Shinya Sano , Akifumi Kurokawa
- Applicant Address: JP Aichi-ken JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha,Aisin Seiki Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha,Aisin Seiki Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken JP Aichi-ken
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-021418 20110203
- Main IPC: H02K1/27
- IPC: H02K1/27

Abstract:
A rotor for a rotary electric machine has a plurality of magnetic poles provided at intervals in a circumferential direction of a rotor core, at an outer periphery of the rotor core. Each of the magnetic poles includes a central magnet, a pair of circumferential-direction magnets disposed on both sides of the central magnet in the circumferential direction such that a spacing between the pair widens towards an outer periphery of the rotor core, and low permeability regions provided in the vicinity of end portions of the central magnet in the circumferential direction, and having a permeability lower than a magnetic material of the rotor core. The rotor core is formed such that a width of a magnetic path entrance portion that is formed between a magnetic-pole inward side face of the circumferential-direction magnet and the adjacent low permeability region decreases towards an outer peripheral face of the rotor core.
Public/Granted literature
- US20120200187A1 ROTOR FOR ROTARY ELECTRIC MACHINE Public/Granted day:2012-08-09
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