A steering system for an automobile

Abstract

The invention discloses a steering system for automobiles, which comprises a steering wheel, a mandrel, a steering pipe column, an intermediate shaft, a steering gear and a pipe column installation beam. Two mutually spaced installation plates are fixed on the pipe column installation beam. There is a mounting hole or a mounting shaft fixed on the mounting plate, the first universal joint is located between the two mounting plates, and the center of the first universal joint is aligned with the center of the two mounting plates. The axes of the mounting holes or the mounting shafts are located on the same straight line, and the two mounting plates are both mounted on the vehicle frame in rotation through the mounting holes or the mounting shafts on themselves. The intermediate shaft of the present invention does not need to be made into a length-adjustable structure, which greatly reduces the requirements of the forming process and has better rigidity. When adjusting the angle of the installation beam of the pipe column, only the phase angle of the first universal joint will change, while the second The phase angle of the gimbal does not change, reducing torque fluctuations.

Description

technical field [0001] The invention relates to the field of automobile steering, in particular to a steering system for automobiles. Background technique [0002] The steering system is an important part of the car's handling and stability performance. A car steering system commonly used in cars is shown in the attached manual. figure 1 As shown, it includes a steering wheel 1, a mandrel 2, a steering column 3, an intermediate shaft 4, a steering gear 5 and a column mounting beam 6, the steering column 3 is fixedly connected to the column mounting beam 6, and the mandrel 2 is rotatably set on the steering column. Inside the column 3 and both ends of the mandrel 2 pass through the steering column 3, the steering wheel 1 is fixedly connected to one end of the mandrel 2, and one end of the intermediate shaft 4 is connected to the other end of the mandrel 2 through the first universal joint 7 , the other end of the intermediate shaft 4 is connected to the steering gear 5 throu...

AI Technical Summary

Problems solved by technology

[0005] First, the intermediate shaft must be of an adjustable length structure. In the prior art, it is generally composed of a sleeve 41 and a spline shaft 42 sleeved in the sleeve. This structure has high requirements for the molding process and increases the design cost. At the same time, the stiffness of the intermediate shaft will also deteriorate;

[0006] Second, when adjusting the angle of the installation beam of the pipe column, the included angle of one of the universal joints always becomes larger, and the included angle of the other universal joint becomes smaller, so the phase angle difference between the two universal joints increases, and finally result in poor torque

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