Title:
回転電機
Document Type and Number:
Japanese Patent JP5818949
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a dynamo-electric machine which can be machined easily and manufactured inexpensively.SOLUTION: A dynamo-electric machine includes a rotor core 3 attached to a shaft 1, a permanent magnet embedded in the rotor core 3 while exposing the axial end to the axial end face of the rotor core 3, an end plate 4 disposed at the axial end face of the rotor core 3 and regulating axial movement of the permanent magnet, and a fixing member 5 for fixing the end plate 4 to the shaft 1. At least one of a pair of end plates 4 provided at both end faces of the rotor core 3 is composed of a thin magnetic material, where the thickness at a part facing the permanent magnet is thinner than a bridge distance, i.e., the shortest distance between the outer peripheral surface of the rotor core 3 and the permanent magnet, the thickness near the shaft 1 of the fixing member 5 corresponding to the end plate 4 is set thicker than that of the end plate 4, and irregularities consisting of recesses 4a for forming a space are provided at a part of end plate 4 facing the permanent magnet.
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Inventors:
Minoru Ikura
Application Number:
JP2014137312A
Publication Date:
November 18, 2015
Filing Date:
July 03, 2014
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02K1/27
Domestic Patent References:
| JP2002152999A | ||||
| JP2012235652A | ||||
| JP2007259583A | ||||
| JP2010004630A | ||||
| JP9233750A | ||||
| JP2009284588A | ||||
| JP2012205402A |
Foreign References:
| WO2002019499A1 | ||||
| WO2012169043A1 |
Attorney, Agent or Firm:
Takenaka Ikuo
Masuo Oiwa
Keigo Murakami
Kenji Yoshizawa
Masuo Oiwa
Keigo Murakami
Kenji Yoshizawa