Spring-Urged Steering Centering Device for Stability
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Solution Overview
Problem
Existing vehicle steering systems fail to maintain a stable center steering position under minor non-linear inputs from cross winds or driver corrections, leading to issues like road wander and increased driving fatigue.
Innovation Solution
A spring-urged centering device for vehicle steering assemblies that utilizes bifurcated brackets with cam surfaces and roller bearings, along with adjustable bearing trim assemblies and optional dampers to maintain wheel alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If air/hydraulic centering systems are used to maintain steering position, then centering force is provided, but the system complexity and maintenance requirements increase
Solution Approach 1:
The patent replaces complex air/hydraulic centering systems with a purely mechanical spring-based centering mechanism. The spring assembly directly provides the centering force through mechanical action on the steering rack, eliminating the need for fluid pressure systems, accumulators, and associated control components while maintaining effective centering functionality
Solution Approach 2:
The invention extracts and removes the complex air/hydraulic components from the centering system, retaining only the essential mechanical elements (springs, mounting brackets, and linkage) needed to provide centering force. This simplification reduces system complexity while preserving the core centering function
2Ease of operation
If spring-urged centering device is used to maintain steering center position, then driving fatigue is reduced, but additional components are introduced into the steering assembly
Solution Approach 1:
The patent merges the centering function with the existing steering rack assembly by integrating the spring mounting brackets and spring assemblies directly into the rack structure. This combination allows the centering device to operate as part of the existing steering mechanism rather than as a separate additive system, minimizing overall complexity
Solution Approach 2:
The spring-based centering mechanism serves multiple functions: it provides centering force, compensates for environmental inputs like crosswinds, reduces driver fatigue, and works with the existing steering linkage system. This multi-functionality justifies the added components by delivering multiple benefits from a single integrated system
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces driving fatigue, prevents oversteering, and maintains vehicle direction stability by compensating for environmental inputs and minor steering corrections, thereby enhancing safety and reducing the risk of rollovers.
Implementation Method 1
a spring-urged centering device for steering assemblies of vehicles
Data Source
AI summary
A steering centering device for vehicles to import straight line stability without excess induced resistance during use. The device includes a pair of spring urged roller bearing assemblies connected to the vehicle steering assembly for select movement along respective contoured cam travel surfaces. Resistance is imparted to the centering assembly as the roller bearings move from a rest (centered notch position) by steering input. A trim adjustment is provided to adjustably reposition the roller bearings rest position and a pressure damper is alternately positioned between the roller bearings to increase turning resistance.