Spiral Spring Pad Structure for Suspension Seating and Durability
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Solution Overview
Problem
Existing spring pads for vehicle suspensions face challenges in simultaneously satisfying dynamic seating property and durability, particularly on both sides of a rear wheel, leading to increased costs and potential insufficient performance due to conflicting requirements during bumps and rebounds.
Innovation Solution
A spring pad design featuring a body portion made of elastic material with an inclined spiral surface and an embedded insert portion made of hard material, which minimizes gaps between the spring and the pad by using a composite line reflecting both left and right side gaps, and includes through-holes and ribs for improved contact and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spring pads are uniformly united in specification, then manufacturing cost is reduced and production is simplified, but dynamic seating property on left or right sides becomes insufficient
Solution Approach 1:
The patent applies asymmetry by designing the inclined surface with a specific spiral curve that is optimized for one side (e.g., right side) while the starting point of the spring can be rotated to accommodate the other side. This allows a single unified spring pad design to adapt to both left and right suspension positions through rotational adjustment, rather than requiring completely different designs for each side.
Solution Approach 2:
The patent changes the parameter of the inclined surface spiral curve to minimize gaps between the spring and pad. By optimizing the spiral curve parameters based on composite line analysis of gap minimization, the design achieves good dynamic seating property while maintaining unified specifications for mass production.
2Reliability
If spring pads are dualized separately for left and right sides to satisfy dynamic seating property, then dynamic seating property is improved, but manufacturing cost increases
Solution Approach 1:
The patent achieves universality by designing a single spring pad that can serve both left and right suspension positions. The inclined surface spiral curve is designed to minimize gaps for one side, and the spring's starting point can be rotated to accommodate the other side, making one design serve multiple functions and positions.
Solution Approach 2:
The asymmetric spiral curve design allows the spring pad to be optimized for one side while still functioning on the other side through rotation, eliminating the need for completely separate left and right designs.
3Strength
If spring pad is designed prioritizing durability based on greater impacts, then durability is improved, but dynamic seating property becomes insufficient
Solution Approach 1:
The patent optimizes the inclined surface spiral curve parameters to minimize gaps between the spring and pad, which improves dynamic seating property. The spiral curve is designed based on composite line analysis that considers gap minimization, allowing the spring to maintain good contact during dynamic operations while the insert portion provides durability support.
Solution Approach 2:
The spring pad uses composite construction with an elastic body portion and a hard insert portion embedded inside. This composite structure allows the elastic material to provide dynamic seating property through deformation while the hard insert portion provides durability and resistance to greater impacts.
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 design achieves balanced dynamic seating property and durability, reducing costs and enhancing ride comfort and steering stability by uniformly supporting springs on both sides of the rear wheel, while preventing direct metal-to-metal contact and corrosion.
Implementation Method 1
The body portion is formed of an elastic material
Data Source
AI summary
A spring pad for a suspension can satisfy both conflicting dynamic seating property and durability, and unification of specifications. In particular, the spring pad may include: a body portion disposed on one side of a spring to support the spring; and an insert portion embedded inside of the body portion and integrally formed with the body portion. The spring is seated on an inclined surface of the body portion, and the inclined surface may be formed in a spiral shape gradually increasing in height. A spiral curve of the inclined surface may be formed by reflecting a composite line minimizing a gap between the inclined surface and the spring.