Double-wishbone front-suspension system applied to driving of inner rotor hub motor

Abstract

The invention discloses a double-wishbone front-suspension system applied to driving of an inner rotor hub motor. The double-wishbone front-suspension system comprises a steering knuckle, an upper control arm, a lower control arm, a shock absorber spherical hinge lower supporting arm, a spring damper assembly, and the inner rotor hub motor. The steering knuckle is provided with an upward extendingsupporting arm, the upper control arm is hinged to the top end of the supporting arm to form a first hinge point, and the lower control arm is hinged to the lower end of the steering knuckle to forma second hinge point. The shock absorber spherical hinge lower supporting arm comprises a hollow cylinder with a side opening in one side and a rectangular flat plate vertically placed with the hollowcylinder, wherein the extended end of the rectangular flat plate is connected with the middle part of the supporting arm through a ball head pin to form a third hinge point. The upper end of the spring damper assembly is supported on a vehicle body, and a cylinder barrel at the lower part of the spring damper assembly is fixed in the hollow cylinder, the inner rotor hub motor is matched with thehollow cylinder of the steering knuckle, wherein the third hinge point is located on a connecting line between the first hinge point and the second hinge point. The double-wishbone front-suspension system solves the problem of interference of the wheel hub motor on the arrangement of suspension components and various components during wheel steering and up and down movement.

Description

technical field [0001] The invention relates to the field of electric wheel drive vehicles, in particular to a front suspension structure of the electric wheel drive vehicle. Background technique [0002] The electric vehicle driven by the motor has many advantages such as low noise, high energy utilization rate, strong environmental friendliness and good economy, and is widely favored by users, and its development prospect is very broad. Hub motor technology is an important direction for the development of automobile electrification. It ingeniously integrates the power transmission and braking functions into the automobile hub, which not only greatly simplifies the mechanical transmission part, but also facilitates the realization of motors such as 4WID (For Wheel Independent Dive), ABS (Anti-lock Braking System), TCS (Traction Control System), ESP (Electronic Stability Program) and other chassis control systems such as drive-by-wire and brake-by-wire are integrated to maxi...

AI Technical Summary

Problems solved by technology

Secondly, even if the inner rotor hub motor is used, when matching the traditional double-wishbone front suspension, the suspension system has the problem of structural layout interference

For example, due to the space occupied by the hub motor on the inner side of the wheel, the spring-integrated shock absorber cannot be normally supported on the lower swing arm of the suspension, which affects the function of the elastic element to support and isolate the vehicle body and the shock absorption effect of the shock absorber.

If the spring-integrated shock absorber is supported on the hub motor housing, it will cause the shock absorber to swing when the wheel rotates, causing motion interference and affecting force transmission, and requires a redesign of the motor housing structure

If the shock absorber is supported on the upper swing arm, it will lead to problems such as insufficient shock absorbing travel and changes in suspension hard point parameters, which will affect vehicle handling stability and smooth driving performance.

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