Differential mechanism and automobile transmission system with same

Abstract

The invention discloses a differential mechanism and an automobile transmission system with the same. The differential mechanism comprises a shell and two planet gears located in the shell, and further comprises a planet carrier and a driven ring, the planet carrier and the driven ring are located in the shell, and the planet carrier and the driven ring are provided with meshing teeth matched with each other; and the driven ring is connected with the shell and can move relative to the shell to be close to or away from the planet carrier. The two planet gears are fixedly connected with the planet carrier through planet gear shafts; and the differential mechanism further comprises a driving unit, which is used for driving the driven ring to move close to the planet carrier so as to be meshed with the planet carrier or driving the driven ring to move away from the planet carrier so as to be separated from the planet carrier. The differential mechanism is a differential mechanism with a disengaging mechanism. When an automobile is switched from a four-wheel-drive mode to a two-wheel-drive mode, power of a power source is cut off through disengaging of the disengaging mechanism of the differential mechanism, such that only part of the structure of the differential mechanism needs to be driven when wheels rotate and are reversely dragged, rotational inertia is small, and energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of automobile transmission, in particular to a differential and an automobile transmission system with the differential. Background technique [0002] At present, when a car switches between four-wheel drive mode and two-wheel drive mode, the combination and separation of power is realized by a disengagement mechanism, which is usually a clutch or a synchronizer. [0003] In the transmission system of a car, the above-mentioned disengaging mechanism is usually arranged near the power input end. Taking electric vehicles (including pure electric vehicles and hybrid vehicles) as an example, when the vehicle changes from four-wheel drive mode to two-wheel drive mode, the main drive The motor provides power, and the auxiliary drive motor stops running. When the vehicle is running, the rotation of the wheels will drag the part of the transmission mechanism that has not cut off the power to rotate, thereby increasi...

AI Technical Summary

Problems solved by technology

[0003] In the transmission system of a car, the above-mentioned disengaging mechanism is usually arranged near the power input end. Taking electric vehicles (including pure electric vehicles and hybrid vehicles) as an example, when the vehicle changes from four-wheel drive mode to two-wheel drive mode, the main drive The motor provides power, and the auxiliary drive motor stops running. When the vehicle is running, the rotation of the wheels will drag the part of the transmission mechanism that has not cut off the power to rotate, thereby increasing the moment of inertia, consuming energy to a certain extent, and increasing energy loss

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