Four-wheel steering system for automobile

A technology of four-wheel steering and steering system, which is applied in the direction of steering mechanism, steering rod, electric steering mechanism, etc., to achieve the effects of improving steering stability, less design structure changes, and reducing the number of uses

Inactive Publication Date: 2016-02-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current integrated rear wheel steering device only relies on the linear stepper motor to drive the steering rod to move laterally. In some occasions that require a large steering torque, such as muddy roads or when large angle steering is required, it often has certain limitations.

Method used

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  • Four-wheel steering system for automobile
  • Four-wheel steering system for automobile
  • Four-wheel steering system for automobile

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Experimental program
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Embodiment Construction

[0025] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] refer to figure 1 , figure 2 The four-wheel steering system applicable to automobiles of the present invention includes a rack and pinion traditional steering system and an independent steering system. The front wheels use a rack-and-pinion steering system, and the rear wheels use an independent steering system. The rear wheel independent steering system includes a rotary motor 6, a worm gear mechanism 8, and a vehicle frame 9. Wherein, the motor shaft 7 is a common shaft including a transmission part 12 and a driving part 21 , and the driving part 21 is connected with the armature 17 through a connecting piece 22 to realize the output of the rotational movement of the armature 17 . The transmission part 12 of the common shaft 13 is made into a worm, which is used for meshing with the worm gear to transmit power. Spli...

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PUM

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Abstract

The invention discloses a four-wheel steering system for an automobile. The steering system comprises a traditional steering system and an independent steering system, wherein front wheels adopt the pinion-and-rack traditional steering system, and rear wheels adopt the independent steering system; the rear wheel independent steering system is composed of motors, a reduction mechanism and a transmission mechanism, the motors are rotary motors, and the reduction mechanism is a worm and gear mechanism; the transmission mechanism comprises a vehicle frame, the left rear wheel corresponds to one rotary motor, the right rear wheel corresponds to one rotary motor, and the two rotary motors are independent of each other and control the steering motion of the corresponding wheels. By the adoption of the four-wheel steering mode, the defects of a traditional steering system are overcome, the front wheels and the rear wheels conduct antiphase steering during low-speed turning, and then the turning radius of the automobile is reduced to improve maneuverability; the front wheels and the rear wheels mainly conduct in-phase steering during high-speed turning, the side slip angle of the automobile can be reduced, the steady-state overshoot of the automobile yaw rate can be reduced, and the handling stability of the automobile is further improved.

Description

Technical field: [0001] The invention relates to a four-wheel steering system suitable for automobiles, which is used for the four-wheel steering of automobiles. Background technique: [0002] With the development of economy and the advancement of automobile technology, highway traffic presents a trend of high-speed driving, dense traffic flow and non-professional drivers. Automobile traffic accidents have also brought a great threat to people's lives and properties, and it is directly related to the safety of people's lives and properties. How to improve automobile safety and reduce the number of casualties in traffic accidents has increasingly become a hot issue in the field of automobile research and design. [0003] Steering system, as one of the many key systems of the car, is very important to the driving safety of the car. Although the traditional steering system (mechanical, hydraulic power steering or electric power steering system) has developed quite maturely an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D7/14B62D5/04
Inventor 郑宏宇赵明新杨硕
Owner JILIN UNIV
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