Title:
回転子鉄心、回転子、及び回転電機
Document Type and Number:
Japanese Patent JP7107654
Kind Code:
B2
Abstract:
To provide a rotor core and a rotor in which division of iron core, segmentation of magnet, and simplification of the structure of key groove of the column to the revolving shaft are achieved while maintaining skew effect.SOLUTION: A rotor core has columnar shape and includes a through hole configured so that a revolving shaft can penetrate. The rotor core includes a key constituting a part of the through hole, and provided to be able to engage with the revolving shaft, and multiple first polarity permanent magnets and second polarity permanent magnets arranged alternately along the outer boundary of the rotor core. Assuming the total number of the first polarity permanent magnets and second polarity permanent magnets is n, and the rotation direction is plus, the magnet axis of the first polarity permanent magnets is deviated plus θ degree, and the magnet axis of the second polarity permanent magnets is deviated minus θ degree, from axis lines arranged at angular interval of 360/n degrees, with reference to a line passing the center of the key and the center of the revolving shaft.SELECTED DRAWING: Figure 2
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Inventors:
Iwai communication
Takashi Araki
Naoki Inamura
Takashi Araki
Naoki Inamura
Application Number:
JP2017174797A
Publication Date:
July 27, 2022
Filing Date:
September 12, 2017
Export Citation:
Assignee:
Toshiba Industrial Equipment Systems Co., Ltd.
International Classes:
H02K1/27; H02K1/22
Domestic Patent References:
| JP1122353A | ||||
| JP2005051897A | ||||
| JP2005065479A | ||||
| JP2008131693A |
Foreign References:
| WO2017022021A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Sato