Four-wheel independent steering system with steering motor mounted on double wishbone suspension knuckle

Abstract

The present invention relates to a four-wheel independent steering system with a steering motor mounted on a double wishbone suspension knuckle. The four-wheel independent steering system comprises the steering motor, an upper swing arm, a lower swing arm, and a knuckle for driving wheels to steer. The upper swing arm and the lower swing arm are connected with a body. The steering system also comprises a motor bracket. The motor bracket is connected with the knuckle by a thrust bearing, the steering motor is fixed on the motor bracket, and the output shaft of the steering motor is connected with the knuckle by a key, the upper swing arm is connected with the motor bracket through a hooke joint, and the lower swing arm is connected with the knuckle through a spherical hinge. Compared with the prior art, the advantages of the double wishbone independent suspension and a wire steering system are combined, good suspension kinematic characteristics are achieved, a steering servo motor assembly is arranged on the wheel rim, so that the integration of the suspension and the steering system is realized, and the integration level is high.

Description

technical field [0001] The invention relates to a four-wheel independent steering system, in particular to a four-wheel independent steering system in which a steering motor is placed on a double-wishbone suspension steering knuckle. Background technique [0002] The traditional vehicle steering system ensures that there is a certain functional relationship between the inner and outer wheel angles during steering through the steering trapezoidal mechanism, which approximately satisfies the Ackermann steering law. However, due to the existence of the steering trapezoid, it will inevitably cause the movement interference of the suspension guide mechanism and the steering rod system when the wheels jump up and down, and it is impossible to realize the steering at a large angle. The four-wheel independent steering by wire technology cancels the traditional trapezoidal steering mechanism, which fundamentally solves this problem. The four-wheel-by-wire independent steering techno...

AI Technical Summary

Problems solved by technology

However, the existing four-wheel independent steering system often adopts simple suspension forms such as candle suspension, which is difficult to achieve better suspension motion performance.

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