Transfer case device and vehicle

Abstract

The invention discloses a transfer case device and a vehicle, and belongs to the technical field of transfer cases. The transfer case device comprises an input shaft assembly, a first connecting shaft assembly, an intermediate shaft assembly, a second connecting shaft assembly and an output shaft assembly which are sequentially in transmission connection through gears; the input end of the input shaft assembly is connected with an output shaft of a transmission; the backward output end of the input shaft assembly is connected with a rear drive axle; the forward output end of the output shaft assembly is connected with a front drive axle; a clutch is arranged in the intermediate shaft assembly; and the diameter of a gear in the intermediate shaft assembly is smaller than the diameters of gears in other shaft assemblies. Through adjustment of the speed ratio, the requirement for the torque capacity of the clutch is lowered, the number and the size of the clutch are reduced, the dragging torque is reduced accordingly, the arrangement difficulty and the manufacturing cost of the transfer case on the whole vehicle are lowered, and model selection of an execution motor is facilitated.

Description

technical field [0001] The invention relates to the field of transfer gear technology, in particular to a transfer gear device and a vehicle. Background technique [0002] In order to realize the four-wheel drive function of traditional internal combustion engine vehicles, a transfer case is arranged in the transmission system. According to the arrangement of the engine, the transfer case is divided into a longitudinal transfer case and a transverse transfer case. The power output by the engine is transmitted to the transfer case through the transmission, and then the transfer case transfers the power to the front axle and the rear axle. In the two-wheel drive mode, the power is directly transmitted to the rear axle. The maximum transfer torque of the axle depends on the clutch torque capacity. [0003] The existing longitudinal vehicle transfer case clutch is usually arranged on the input shaft of the transfer case. The torque limit output by the transfer case to the fron...

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Problems solved by technology

[0003] The existing longitudinal vehicle transfer case clutch is usually arranged on the input shaft of the transfer case. The torque limit output by the transfer case to the front axle is the clutch capacity. With the increasing demand for the output torque of the transfer case to the front axle The higher the number of clutch plates and the effective diameter of the clutch, the higher the required torque capacity of the actuator and the larger the volume of the clutch. The increase in the volume of the clutch not only makes the transfer box The layout on the car is difficult, and its manufacturing difficulty and cost are also increased. At the same time, it also causes many difficulties in the selection of the actuator motor.

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