A kind of automobile and transfer gear thereof

Abstract

The invention discloses an automobile and a transfer case thereof. The transfer case comprises an input shaft, a front output shaft and a rear output shaft, and further comprises a planetary gear mechanism arranged on the front input shaft, a first power switching part, a central differential mechanism, a second power switching part, a locking part and a clutch assembly, wherein the first power switching part can be connected with the power output end and the front input shaft of the planetary gear mechanism in a switching mode; the central differential mechanism is arranged on the rear output shaft; the second power switching part can be connected with the central differential mechanism and the rear output shaft; the locking part is connected with the power input end of the central differential mechanism and the power input end of a front shaft transmission mechanism so that the central differential mechanism and the front shaft transmission mechanism can synchronously rotate; the clutch assembly is arranged on the rear output shaft and can transmit power on the rear output shaft to the front output shaft. The transfer case is a full-mode transfer case and has a plurality of working modes, the different working modes can be selected at will according to the operation intention of a driver and changes of road conditions, functions of the transfer case are increased, and the transfer case can meet drive requirements of the automobile more sufficiently.

Description

technical field [0001] The present invention relates to the technical field of auto parts, more specifically, to a transfer case, and also to an automobile with the above transfer case. Background technique [0002] A transfer case is a gear train that has an input shaft and multiple output shafts. The input shaft of the transfer case is connected directly or through the universal transmission to the output shaft of the transmission, while the different output shafts of the transfer case are respectively connected to different drive axles of the car through the universal transmission. [0003] At present, four-wheel drive SUV models can be divided into four-wheel drive systems based on FF (the car's engine is front-mounted and front-wheel drive) and FR-based (the car's engine is front-mounted and rear-wheel drive) according to the layout of the engine. system. Among them, the FR-based four-wheel drive system can be divided into three driving forms: full-time four-wheel dri...

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned full-time four-wheel drive splitter, timely four-wheel drive splitter and time-sharing four-wheel drive splitter can meet different driving requirements, the function of each kind of splitter is relatively single, and all There are their own disadvantages: the full-time four-wheel drive transfer drive continuously outputs power to the four wheels of the car, so the fuel consumption of the car is high; the timely four-wheel drive transfer drive is not always a timely four-wheel drive drive mode, so when the car is driving in extreme road conditions (for example, muddy roads will cause the driving wheels of the car to slip), it cannot make the car get out of trouble in time in extreme road conditions; the part-time four-wheel drive transfer requires the driver to manually switch the working mode according to the road conditions , so the driver's driving skills are required to be higher

Since each transfer case has its own shortcomings, no matter which transfer case can meet the driving needs of the car more comprehensively

[0008] In addition, all the above-mentioned two-wheel drive and four-wheel drive modes further include two modes of high speed and low speed, and when performing a shift operation of switching between high and low speed modes, due to the rotational speed of the gear at the power input end and the gear at the power output end, It is different, so when shifting gears, the differential meshing of the two gears will cause tooth hitting, which will damage the gears and affect the service life of the transfer case

In the prior art, in order to reduce the degree of damage to the gears to protect the transfer case, the method adopted is to keep the car at a lower speed or stop when the four-wheel drive high and low speed shift operation, but this will increase the driver's The complexity of driving a car has brought great inconvenience to the driver

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