Vehicle Suspension Spring Pad Guide Against Rebound Withdrawal
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Solution Overview
Problem
The withdrawal of springs connecting suspension arms and vehicle body members during additional rebounds in full-rebound situations can lead to vehicle instability and accidents, particularly in vehicles with increased stiffness and reduced weight for improved handling and environmental friendliness.
Innovation Solution
A suspension system with a spring pad that includes a guide part to prevent the spring from being withdrawn by guiding its movement and supporting it through a vehicle body coupling part, using materials like plastic or rubber to enhance stiffness and reduce friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the stiffness of the spring is increased to increase the wheel rate and improve handling performance, then the rigidity of the vehicle is improved, but the compression amount of the spring is decreased and the spring may be withdrawn during additional rebound situations
Solution Approach 1:
The patent introduces a guide part as an intermediary component between the spring and the spring pad. This guide part actively guides the movement of the spring end and prevents it from being withdrawn from the spring pad during additional rebound situations, thereby resolving the reliability issue while maintaining the high stiffness spring design
Solution Approach 2:
The guide part is designed to preemptively prevent spring withdrawal by providing a guiding path that constrains the spring end's movement. This preliminary protective measure counteracts the potential harmful effect of spring withdrawal before it can occur, allowing the use of high-stiffness springs without compromising reliability
2Reliability
If the wheel stroke is decreased to prevent spring withdrawal, then the reliability is improved, but the performance and marketability of the vehicle are compromised
Solution Approach 1:
The guide part serves as a mediator that enables the spring to maintain its high stiffness properties while preventing withdrawal. This allows the wheel stroke to remain sufficiently large for performance while the guide part ensures reliability by constraining the spring end within the spring pad
3Weight of moving object
If the load of the vehicle is decreased to make the vehicle lighter and more environmentally friendly, then the weight is reduced, but the compression amount of the spring is decreased increasing the risk of spring withdrawal
Solution Approach 1:
The guide part acts as a protective intermediary that ensures the spring end remains within the spring pad even when the vehicle load is reduced. This allows the vehicle to be designed with lighter weight while the guide part compensates for the reduced compression force by providing mechanical guidance and prevention of spring withdrawal
Data Source
AI summary
A suspension system has a spring which may be prevented from being completely withdrawn and separated from a spring pad even in a situation in which an additional rebound further occurs in a full-rebound state and the spring deviates from a range (a free height of the spring) in which the spring can be extended.