Transfer cases, drivetrains and vehicles

Abstract

The invention provides a transfer case, a power transmission system and a vehicle. The transfer case comprises a shell, a first shaft and a second shaft, wherein the axes of the two shafts are vertically intersected; a planetary gear train, a connector and an active bevel gear are arranged on the first shaft in sequence; an inner gear ring of the planetary gear is connected with the shell; a sun wheel is fixedly arranged on the first shaft; both a planetary frame and the active bevel gear hollowly sleeve the first shaft; the connector comprises a first connection body and a second connection body; the first connection body is fixedly arranged on the planetary frame; the second connection body sleeves the active bevel gear; a shifting fork is arranged on the second connection body; the shifting fork is connected with a transmission control unit; the input end of the second shaft is provided with a passive bevel gear. According to the transfer case, the transmission control unit timely controls the shifting fork to shift the two connection bodies to be connected tightly, the automatic connection of the planetary frame and the active bevel gear is realized, so that the power on a front drive axle is distributed to a rear drive axle, and a four-wheel drive mode is realized; the reliability and functionality of the transfer case, the power transmission system and the vehicle are improved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a transfer case, a power transmission system and a vehicle. Background technique [0002] In the existing vehicles, the four-drive power transmission system is usually equipped with a transfer case, and the transfer case connected with the transverse transmission is generally a conventional gear transfer case, and the conventional gear transfer case is mainly used to connect the front and rear. The bevel gear transmission of the drive axle mainly has single-stage and two-stage structures. The two-stage structure is usually realized by adding a parallel shaft and a cylindrical gear on the basis of the single stage, and usually adopts a rigid connection method, such as a spline connection. , directly transmits the power of the front drive axle to the rear drive axle. This kind of transfer box has a large structure size, is not compact, and generally does not have the function of timely p...

AI Technical Summary

Problems solved by technology

[0002] In the existing vehicles, the four-drive power transmission system is usually equipped with a transfer case, and the transfer case connected with the transverse transmission is generally a conventional gear transfer case, and the conventional gear transfer case is mainly used to connect the front and rear. The bevel gear transmission of the drive axle mainly has single-stage and two-stage structures. The two-stage structure is usually realized by adding a parallel shaft and a cylindrical gear on the basis of the single stage, and usually adopts a rigid connection method, such as a spline connection. , directly transmits the power of the front drive axle to the rear drive axle. This kind of transfer case has a large structure size, is not compact, and generally does not have the function of timely power distribution, so it cannot realize the function of timely switching the four-wheel drive mode of the car.

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