Title:
A rotation child and a permanent magnet electric motor
Document Type and Number:
Japanese Patent JP6142592
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotator capable of cooling a corner of a permanent magnet when the rotator is rotated, and a permanent magnet motor using the rotator.SOLUTION: A rotator 1 comprises non-magnetic end plates 20 arranged on both end faces in a rotation axial direction of a columnar rotor iron core 10, and plate-like permanent magnets 40 are respectively embedded in plural magnet embedding holes annularly formed at predetermined intervals near an outer periphery of the rotator iron core 10 and extending in the rotation axial direction so that each of the plural magnet embedding holes serves as a side forming a polygon centering on a rotation shaft of the rotor iron core 10. The end plate 20 comprises: a magnet detachment-prevention part 200 contacting the rotator iron core 10 across centers of the magnet embedding holes faced to the ends in the rotation axial direction of the rotator iron core 10 in a radial direction, and preventing the permanent magnet 40 from being detached from the rotator iron core 10; and a blade part 210 projecting in the rotation axial direction so as to expose corners 400 of the permanent magnets 40 faced to the end face in the rotation axial direction of the rotator iron core 10.
Inventors:
Hasegawa public entertainment
Yoshihiro Taema
Yoshihiro Taema
Application Number:
JP2013051521A
Publication Date:
June 07, 2017
Filing Date:
March 14, 2013
Export Citation:
Assignee:
Fujitsu General Limited
International Classes:
H02K1/27
Domestic Patent References:
| JP2005304177A | ||||
| JP11355985A |