Coil Spring Pad Extension for Deformation Prevention
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Solution Overview
Problem
Existing coil spring pads in vehicle suspension systems suffer from permanent deformation and tearing due to repeated compression and extension, and accumulate foreign substances on their surface, leading to reduced contact area and increased stress concentrations.
Innovation Solution
A coil spring pad with an inclined upper surface and a pad extension part that covers the entire lower seat area except for through-holes and convex portions, featuring downward inclines to prevent deformation and foreign substance accumulation, and includes pad fixing portions and lower grooves to reduce horizontal deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the coil spring pad has a small contact area with the lower seat, then the structure is simpler, but stress is concentrated on the accommodating groove causing permanent deformation and tearing
Solution Approach 1:
The coil spring pad is divided into a body portion and a pad extension part that protrudes from the body. This segmentation allows the pad extension part to cover the accommodating groove and increase the contact area with the lower seat, distributing stress more evenly and preventing permanent deformation and tearing while maintaining structural simplicity.
2Stability of the object's composition
If the coil spring pad covers the entire lower seat area, then the contact area is maximized preventing deformation, but foreign substances accumulate on the surface
Solution Approach 1:
The upper surface of the pad extension part is given a specific inclination angle (α) relative to the lower seat, creating a self-cleaning surface. This local quality change allows foreign substances to slide off the inclined surface due to gravity, preventing accumulation while the pad extension part maintains full coverage to maximize contact area and prevent deformation.
3Object-affected harmful factors
If the upper surface is made inclined to prevent foreign substance accumulation, then cleanliness is improved, but the structural complexity increases
Solution Approach 1:
The upper surface of the pad extension part is designed with a specific inclination angle (α) rather than being flat. This parameter change transforms the surface geometry to create a self-cleaning effect where foreign substances naturally slide off due to gravity, preventing accumulation without requiring additional complex mechanisms or components.
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 maximizes contact area between the coil spring pad and the lower seat, preventing permanent deformation and tearing, while ensuring foreign substances are discharged, maintaining the pad's shape and preventing damage.
Implementation Method 1
the pad extension part has an inclined surface so that foreign substances can flow down without accumulating on the upper surface of the coil spring pad
Implementation Method 2
the coil spring is intended to attenuate vibrations and impacts along with the shock absorber, and is made by winding a thick steel wire in a spiral form. When an external force is applied to compress the shock absorber, the coil spring is compressed as well, and then the coil spring is restored by an elastic force.
Implementation Method 3
The coil spring pad is provided between the coil spring and the lower seat to prevent direct contact between the coil spring and the lower seat and to absorb and mitigate an impact generated between the coil spring and the lower seat, thereby preventing the lower seat from being damaged due to the operation of the coil spring.
Data Source
AI summary
The present invention relates to a coil spring pad for a vehicle suspension system, comprising: an accommodating groove (51) in which a lower end portion of a coil spring (10) is inserted and accommodated; and a pad extension part (55) which is formed from a first surface (35) of an upper surface (33) of a coil spring pad (31) and covers the whole section, except for a convexly raised portion and a through hole (73) of a lower seat (71), thereby preventing horizontal deformation of the coil spring pad (31).