Independent Suspension Linkage for High Steering Angles
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Solution Overview
Problem
Existing suspension systems for road vehicles face limitations in reducing the minimum turning circle due to restricted steering angles, particularly in vehicles with independent wheel suspension, where the steering kinematics hinder achieving high steering angles without mechanical interference.
Innovation Solution
A wheel suspension system comprising a wheel support, first and second coupling rods, and a track rod, where the coupling rods are articulated to each other and to the wheel support, forming a four-element linkage transmission that allows for high steering angles by transmitting steering torque through a non-direct path, utilizing a track-rod arm and lever elements to optimize steering kinematics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the steering angle is increased to reduce the minimum turning circle, then the vehicle's maneuverability is improved, but the steering kinematics are limited and mechanical interference occurs
Solution Approach 1:
The steering mechanism is divided into multiple coupling rods (first coupling rod, second coupling rod, third coupling rod) that work together in a four-element linkage transmission. This segmentation allows each rod to handle specific portions of the steering motion, enabling high steering angles without mechanical interference while maintaining smooth torque transmission.
Solution Approach 2:
The patent introduces a complex spatial arrangement of coupling rods that operate in multiple dimensions. The first coupling rod connects the track rod to the wheel support, the second coupling rod connects the first coupling rod to the wheel support, and the third coupling rod provides additional articulation. This multi-dimensional linkage configuration allows the steering system to achieve high steering angles without the mechanical interference that would occur in a simpler, single-plane arrangement.
Data Source
AI summary
A wheel suspension system (101) with at least one wheel support (103), first and second coupling rods (105, 107) and at least one track rod (109). The first and second coupling rods (105, 107) are connected to one another in an articulated manner. The second coupling rod (107) and the wheel support (103) are connected to one another in an articulated manner. The track rod (109) is designed to apply a steering torque to the first coupling rod (105). The steering torque is transmitted from the first coupling rod (105), via the second coupling rod (107), to the wheel support (103). The wheel suspension system has at least one suspension link (111) which is mounted, in an articulated manner, on a vehicle body or chassis and is articulated to the wheel support (103). The suspension link (111) and the first coupling rod (105) are articulated to one another.