Title:
回転電機
Document Type and Number:
Japanese Patent JP7101531
Kind Code:
B2
Abstract:
A brushless winding field rotational electric machine 10 includes: a stator 3, which is held to a case 5, including an alternating-current coil 14 configured to generate a rotation magnetic field by alternating current; a field core 6, which is held to the case 5, including a field coil 2 to be excited by direct current; and a rotor 1 disposed on an outer periphery of a rotation member 4 and rotatably held about a rotational axis 7 thereof relative to the stator 3 and the field coil 2. The field coil 2 includes a plurality of coil winding layers 201-204 stacked in a radial direction of the rotational axis 7. A cross-sectional area along an axial direction of the rotational axis 7, of a coil winding layer 204 closest to the rotational axis 7 in the radial direction of the rotational axis 7 is smaller than a cross-sectional area along the axial direction of the rotational axis 7, of a coil winding layer 201 farthest from the rotational axis 7 in the radial direction of the rotational axis 7.
Inventors:
Katsura Hitoshi
Taichi Kitamura
Kimitaka Uemura
Taichi Kitamura
Kimitaka Uemura
Application Number:
JP2018087329A
Publication Date:
July 15, 2022
Filing Date:
April 27, 2018
Export Citation:
Assignee:
EXEDY Friction Material Co.,Ltd.
International Classes:
H02K19/24; H02K3/04
Domestic Patent References:
| JP2017136902A | ||||
| JP2012075276A | ||||
| JP2269431A | ||||
| JP62011373U | ||||
| JP49054806A | ||||
| JP4035656U | ||||
| JP2008048501A | ||||
| JP2012257377A | ||||
| JP10510417A | ||||
| JP3445492B2 |
Foreign References:
| US3304450 |
Attorney, Agent or Firm:
Michiko Matsutani
Hiroshi Okabe
Mitsuo Wada
Nobunori Iwaki
Hiroshi Okabe
Mitsuo Wada
Nobunori Iwaki
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