To make it possible to achieve downsizing and lightening while maintaining high rotation angle detection accuracy of an electric motor in an electrically-driven saddle-riding type vehicular power unit comprising a speed reduction gear mechanism which has a first gear fixed to a motor shaft of which an axial one side is coaxially connected to a rotor of the electric motor, a second gear which engages with the first gear and is fixed to an intermediate shaft, a third gear fixed to the intermediate shaft, and a fourth gear which engages with the third gear and is fixed to an output shaft, and is accommodated in a gear case.SOLUTION: A resolver 76 is provided at the other end part of a motor shaft 38, and a second gear 42 is located on an electric motor 25 side with respect to a third gear 43.SELECTED DRAWING: Figure 2
【課題】電動モータのロータに軸方向一端側が同軸に連結されるモータ軸に固設される第1ギヤと、第1ギヤに噛合して中間軸に固設される第2ギヤと、中間軸に固設される第3ギヤと、第3ギヤに噛合して出力軸に固設される第4ギヤとを有してギヤケース内に収容される減速ギヤ機構を備える電動鞍乗り型車両用パワーユニットにおいて、電動モータの回転角度検出精度を高く保持しつつ、小型軽量化を可能とする。【解決手段】モータ軸38の他端部にレゾルバ76が配設され、第3ギヤ43よりも電動モータ25側に第2ギヤ42が配置される。【選択図】 図2
ELECTRICALLY-DRIVEN SADDLE-RIDING TYPE VEHICULAR POWER UNIT
電動鞍乗り型車両用パワーユニット
2020-10-01
Patent
Electronic Resource
Japanese
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