Drive Device for Electric Vehicle
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Accused Products
Abstract
A motor power unit (9) is installed in a motor room (1). The motor power unit (9) is produced by integrally joining a motor (11) and a speed reduction gear unit (12) using, as a joining surface, one end surface of a motor case (11a) where a rotation shaft is provided, the speed reduction gear unit (12) including a speed reduction gear case (12a) in which a differential gear is installed together with a speed reduction gear. The motor (11) is placed above the differential gear installed in the speed reduction gear case (12a). The rotation shaft of the motor (11) is placed at the more front side of a vehicle body than a rotation center of the differential gear. With such arrangement, the length of the motor power unit (9) in a vehicle body longitudinal direction can be reduced.
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Citations
39 Claims
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1-20. -20. (canceled)
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21. A drive device for an electric vehicle, comprising:
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a generator-motor that drives left and right road wheels to rotate the same and generates electricity by receiving rotation of the road wheels; and a speed reduction gear unit including a speed reduction gear case in which a differential gear is installed together with speed reduction elements, the differential gear functioning to distribute a rotation force of the generator-motor to the left and right road wheels; a plurality of mount portions through which the generator-motor and the speed reduction gear unit are fixed to a vehicle body; and a steering linkage connected to the road wheels, wherein when the drive device is mounted on the vehicle, the generator-motor takes a position above the differential gear; wherein the generator-motor and the speed reduction gear unit are integrally joined to each other; and wherein the steering linkage is arranged to extend between either one of the mount portions and the speed reduction gear unit. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 39)
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29. A drive device for an electric vehicle, comprising:
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a generator-motor that drives left and right road wheels to rotate the same and generates electricity by receiving rotation of the road wheels; a speed reduction gear unit including a speed reduction gear case in which a differential gear is installed together with speed reduction elements, the differential gear functioning to distribute a rotation force of the generator-motor to the left and right road wheels; a plurality of mount portions through which the generator-motor and the speed reduction gear unit are fixed to a vehicle body; and a steering linkage connected to the road wheels, wherein the generator-motor and the speed reduction gear unit are integrally joined to each other in such a manner that when the drive device is mounted on the vehicle, the generator-motor is placed above the differential gear, and wherein the steering linkage is arranged to extend between either one of the mount portions and the speed reduction gear unit. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A drive device for an electric vehicle, comprising:
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a generator-motor that drives left and right road wheels to rotate the same and generates electricity by receiving rotation of the road wheels; a speed reduction gear unit including a speed reduction gear case in which a differential gear is installed together with speed reduction elements, the speed reduction gear unit being so oriented that a rotation center of the differential gear is directed to a vehicle body lateral direction, the differential gear functioning to distribute a rotation force of the generator-motor to the left and right road wheels; an inverter for operating the generator-motor; a plurality of mount portions through which the generator-motor and the speed reduction gear unit are fixed to the vehicle body; and a steering linkage connected to the road wheels, wherein the generator-motor and the inverter are arranged to put therebetween the speed reduction gear unit placing the generator-motor at one vehicle body lateral side and the inverter at the other vehicle body lateral side, and the generator-motor and the speed reduction gear unit are integrally joined to each other in such a manner that when the drive device is mounted on the vehicle, the generator-motor is placed above the differential gear. - View Dependent Claims (37, 38)
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Specification