Title:
ROTOR FOR ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2022073753
Kind Code:
A
Abstract:
To provide a rotor for a rotary electric machine capable of effectively cooling a radially outer region of a permanent magnet which is most easily heated.SOLUTION: A rotor 20 for a rotary electric machine comprises a rotor core 30 in which a plurality of magnetic pole parts 40 are formed. In each magnetic pole part 40, a first permanent magnet 421 is inserted in a first magnet insertion hole 411. Inside of the first magnet insertion hole 411, a d-axis side space part 431d is formed between a d-axis side end 421d of the first permanent magnet 421 and a d-axis side end 411d of the first magnet insertion hole 411, and a q-axis side space part 431q is formed between a q-axis side end 421q of the first permanent magnet 421 and a q-axis side end 411q of the first magnet insertion hole 411. The first permanent magnet 421 includes a first communication part 42a communicating the d-axis side end 421d and the q-axis side end 421q, and a second communication part 42b communicating the d-axis side end 421d and the q-axis side end 421q.SELECTED DRAWING: Figure 3
Inventors:
TANAKA SHUHEI
Application Number:
JP2020183931A
Publication Date:
May 17, 2022
Filing Date:
November 02, 2020
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
H02K1/32; H02K1/22; H02K1/27
Domestic Patent References:
| JP2007104888A | 2007-04-19 | |||
| JP2009072044A | 2009-04-02 | |||
| JP2014113052A | 2014-06-19 |
Attorney, Agent or Firm:
Patent Business Corporation Koei Patent Office