Invention Grant
- Patent Title: Permanent magnet embedment rotating electric machine, motor for car air conditioner, and enclosed electric compressor
- Patent Title (中): 永磁式嵌入式旋转电机,汽车空调电机,封闭式电动压缩机
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Application No.: US11738318Application Date: 2007-04-20
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Publication No.: US07667363B2Publication Date: 2010-02-23
- Inventor: Taku Adaniya , Tatsuya Horiba , Taizo Hirano , Kensuke Ikai , Minoru Mera
- Applicant: Taku Adaniya , Tatsuya Horiba , Taizo Hirano , Kensuke Ikai , Minoru Mera
- Applicant Address: JP
- Assignee: Kabushiki Kaisha Toyota Jidoshokki
- Current Assignee: Kabushiki Kaisha Toyota Jidoshokki
- Current Assignee Address: JP
- Agency: Woodcock Washburn LLP
- Priority: JP2006-117269 20060420; JP2006-341466 20061219
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K21/14

Abstract:
Outer circumference of a rotor is alternately provided with a plurality of circumferential portions and a plurality of convex portions. Straight lines each connecting a rotational axis to one of circumferential centers of circumferential portions are referred to as radial lines. Straight lines each bisecting one of convex portions are referred to as bisectors. A plurality of magnetic flux blocking regions are located on a rotor. One of the magnetic flux blocking region is located in a range between the radial line and the bisector adjacent to and preceding the radial line in the rotation direction. Therefore, a permanent magnet embedment rotating electric machine is capable of preventing decreases in torque and suppressing torque ripple.
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