Rotary electric machine unit having rotary electric machine with cooling part and electric power conversion device
摘要
說明書
A planetary shaft portion 812c, which is coaxial with the first gear 812a and the second gear 812b, is rotatably fixed to the planet carrier 814. The planetary shaft portion 812c rotates with the rotation of the planet carrier 814, and moves in the circumferential direction γ with the rotation of the sun gear 811. The number of times the planetary shaft portion 812c rotates around the center line CL2 is a value reduced by a predetermined ratio with respect to the rotation speed of the motor shaft portion 708. In the present embodiment, the speed reducer 810 is configured to reduce the rotation speed of the motor shaft portion 708 to output the rotation reduced in speed. Alternatively, the speed reducer 810 may be a speed increaser configured to increase the rotation speed of the motor shaft portion 708 to output the rotation increased in speed.
The differential gear 820 is a differential device that outputs power according to the difference in rotational resistance when the rotational resistance of the wheel is different between the left wheel and the right wheel, and connects the left and right transmission shaft portions 840a and 840b. The differential gear 820 has a differential case 821, a pinion gear 822, and side gears 823a and 823b. The differential case 821 is attached to the planet carrier 814. The pinion gear 822 is rotatably attached to the differential case 821 with its rotation axis orthogonal to the center line CL2, and moves in the circumferential direction γ together with the differential case 821.
