| 摘要 |
PROBLEM TO BE SOLVED: To increase a heat radiation area of a field coil, to cool the field coil and to improve power generation efficiency in a power generator rotor where a rotor core is fixed to a rotation axis which is rotatably supported by a housing, and the field coils are wound to bobbins installed in the rotor core so that they are arranged on both sides of one flat surface passing through a center axis of the rotation axis.SOLUTION: Separation projections 50i for separating coil ends 45b at both ends of a field coil 45 following an axial direction of a rotation axis 27 into an inner side portion 45ba and outer side portions 45bb, which follow a radial direction of the rotation axis 27, are arranged in bobbins 44 at parts corresponding to axial direction outer ends of a rotor core 43. Gaps 53 are formed between the inner side portions 45ba and the outer side portions 45bb on both sides of the separation projections 50i following a circumferential direction of the rotation axis 27. |
