Patent ID: 8534408
Filing Date: 2013-09-17
Classification: B60K,B60Y,B62K,B62M,Y10T

Abstract:
1. An electrically-operated two-wheeled vehicle provided with a swing unit which pivotally supports a drive wheel in a state where the swing unit is mounted on a vehicle body, wherein the swing unit comprises: a first rotary electric machine which is capable of rotating a first shaft; a second rotary electric machine which is capable of rotating a second shaft in both normal and reverse directions; a planetary gear mechanism to which the first shaft is connected; a drive shaft which is connected to the planetary gear mechanism for rotatably driving the drive wheel; a first power transmission mechanism which transmits the rotational drive force of the second shaft to the planetary gear mechanism; a second power transmission mechanism which transmits the rotational drive force of the second shaft to the drive shaft; a first one-way clutch portion which allows transmission of a rotational drive force to the first power transmission mechanism from the second shaft only when the second shaft is rotated in the normal direction: and a second one-way clutch portion which allows transmission of a rotational drive force to the second power transmission mechanism from the second shaft only when the second shaft is rotated in the reverse direction, the swing unit transmits a rotational drive force of the first shaft to the drive wheel by way of the planetary gear mechanism and the drive shaft only when the first rotary electric machine is driven, when the second shaft is rotated in the normal direction by driving both the first rotary electric machine and the second rotary electric machine, the rotational drive force of the first shaft and the rotational drive force transmitted to the first power transmission mechanism from the second shaft by way of the first one-way clutch portion are combined by the planetary gear mechanism and a product of the rotational drive forces is transmitted to the drive wheel by way of the drive shaft in a state where a rotational speed is increased, when the second shaft is rotated in the reverse direction by driving both the first rotary electric machine and the second rotary electric machine, the rotational drive force transmitted to the planetary gear mechanism from the first shaft and the rotational drive force transmitted to the second power transmission mechanism from the second shaft by way of the second one-way clutch portion are combined by the drive shaft and a product of the rotational drive forces is transmitted to the drive wheel in a state where a torque is increased, the first rotary electric machine and the second rotary electric machine are arranged parallel to each other in the longitudinal direction of a vehicle such that an axis (Ax the first power transmission mechanism and the second power transmission mechanism are arranged inside the first rotary electric machine and the second rotary electric machine in the vehicle widthwise direction.