High rigidity riding vehicle rear axle

Abstract

The high rigidity rear axle for car is constituted through connecting the rear axle tube, the longitudinal axle tube and the support integrally, and setting two needle bearings into longitudinal oscillating arm. The outer bearing for the longitudinal axle tube is one integral ring. The rear axle in the said structure has high strength and high rigidity, less early wear, less deformation and less wear of tyre, and can raise the running performance of the car.

Description

Technical field [0001] The invention relates to a high-rigidity passenger car rear axle, which belongs to the category of a passenger car rear suspension assembly. Background technique [0002] The rear axle of a domestic passenger car is an important assembly component of the passenger car chassis. Its structural rationality directly affects the stability and safety of the passenger car, and also affects the life and maintenance of the passenger car chassis. , And it will also have a certain impact on the connected parts of the rear suspension assembly. [0003] For passenger car rear axles with single longitudinal arm type independent suspension ( figure 1 ), its main body is composed of five main types: rear axle shaft tube (3), inner and outer needle roller bearings (2, 6), swing arm shaft tube (4), bracket (5) and longitudinal swing arm (8). The parts are connected by a stabilizer bar (1) and a torsion bar (7, 11). One end of the torsion bar (7, 11) is fixed on a bracket (5...

AI Technical Summary

Problems solved by technology

[0004] Due to the unreasonable structure and poor overall stiffness of the existing passenger car rear axle, there are many shortcomings:

[0006] As another example, there is another type of passenger car rear axle structure ( figure 2 ) of the rear axle shaft tube (2) and the swing arm shaft tube (3) are almost 0 in length, which can be regarded as the rear axle shaft tube (2) and the bracket (4 ), a set of parts of the swing arm shaft tube (3) and the longitudinal swing arm (7), through two bearings (5, 8) on the outer end of the swing arm shaft tube (3) to form a swing

Although the fulcrum of the two bearings is small, the bearing is not in two groups but between two parts, it is easier to process to ensure the fit clearance and improve the wear of the bearing, but its main disadvantage is that it is separately processed and installed on the bracket ( In 4), it is difficult to ensure the coaxiality of the trailing arm shaft tube (3) and the rear axle shaft tube (2) during assembly, and the matching length between the trailing arm shaft tube (3) and the bracket (4) is too short , the moment bearing the trailing arm (7) is small, under the action of the trailing arm force, there will inevitably be a gap between the trailing arm shaft tube (3) and the bracket (4), and the trailing arm shaft tube (3) and the rear axle will be lost again. The coaxiality of the axle tube (2) will eventually lead to the deviation of the toe-in and tire inclination angle, thus affecting the driving performance of the whole vehicle

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