Dual Piston Shock Damping for Independent High- and Low-Speed Tuning
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Solution Overview
Problem
Conventional shock absorbers with multiple settings compromise either compression or rebound performance, failing to independently adjust high and low speed compression and rebound rates, leading to an inconsistent ride experience.
Innovation Solution
A dual piston system with strategically placed fluid pathways and adjustable orifices allows for independent adjustment of low and high speed compression and rebound rates, using different flow channels for each mode and incorporating sets of annular shims to block or allow fluid flow, enabling customized damping settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single piston system with shared flow paths is used, then the device complexity is reduced, but the ability to independently adjust compression and rebound rates is compromised
Solution Approach 1:
The single piston is divided into two separate pistons (first piston and second piston), each with independent flow paths and adjustment mechanisms. This segmentation allows independent control of compression and rebound rates while maintaining adjustable soft, medium, and firm settings for each piston separately.
2Adaptability or versatility
If a lever with multiple compression settings is used, then the adaptability to different riding conditions is improved, but the compromise in rebound performance occurs
Solution Approach 1:
The compression adjustment mechanism is separated from the rebound adjustment mechanism by using two independent pistons. Each piston has its own lever with soft, medium, and firm settings, allowing compression and rebound to be adjusted independently without compromising either function.
3Device complexity
If shared flow paths are used for high and low speed compression and rebound, then the device complexity is reduced, but the manufacturing precision of damping characteristics deteriorates
Solution Approach 1:
The flow paths are segmented into separate channels for the first piston and second piston. Each piston has dedicated flow paths for high speed compression, low speed compression, high speed rebound, and low speed rebound, allowing precise control of damping characteristics for each mode independently.
Solution Approach 2:
Different flow path characteristics are assigned to different pistons and their respective channels. The first piston's flow paths are optimized for specific damping requirements while the second piston's flow paths are optimized for different requirements, allowing localized optimization of each flow path's quality.
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
This solution provides more efficient compression and rebound damping, enhancing the ride comfort and performance by allowing independent adjustment of fluid flow rates, ensuring optimal performance across various riding conditions.
Implementation Method 1
A dual piston system with strategically placed fluid pathways and adjustable orifices allows for independent adjustment of low and high speed compression and rebound rates, using different flow channels for each mode
Implementation Method 2
incorporating sets of annular shims to block or allow fluid flow, enabling customized damping settings
Data Source
AI summary
A dual piston system for independently controlling compression and rebound flowpaths therein, the dual piston system comprising: a first adjustable orifice configured for controlling rebound fluid flow, wherein the first adjustable orifice controls the rebound fluid flow through a first pathway associated with a low speed rebound flow and a second pathway associated with a high speed rebound flow; anda second adjustable orifice configured for controlling compression fluid flow, wherein the second adjustable orifice controls the compression fluid flow through a third pathway associated with a low speed compression flow and a fourth pathway associated with a high speed compression flow.