Front Fork Gas Damping Adjustment for On-the-Fly Ride Tuning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional shock absorbers for bicycles lack the ability to adjust damping characteristics on-the-fly, limiting riders' ability to customize the ride feel based on terrain and personal preference, especially when using gas spring systems where adjustments are complex and only effective over specific ranges of travel.
Innovation Solution
A suspension unit with an annular tube, piston, and valve system that allows compressible gas to flow between compression and damping chambers, featuring a bias and adjuster mechanism to control damping, enabling riders to adjust the damping rate dynamically by varying the effective force on a blocker to open the valve, allowing gas to flow between chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional damping devices are used to control compression and rebound, then damping characteristics can be controlled, but adjustments are complicated and only effective over certain ranges of travel
Solution Approach 1:
The patent changes the physical state of the damping medium from incompressible fluid to compressible gas, allowing damping characteristics to be adjusted by varying gas pressure. This enables continuous adjustment of damping force throughout the entire range of fork travel, not just specific ranges, and simplifies the adjustment mechanism to primarily involve pressure control rather than complex mechanical reconfiguration
Solution Approach 2:
The system dynamically adjusts damping characteristics during operation by allowing the rider to modify gas pressure on-the-fly. The compressible gas enables the damping force to adapt continuously to varying terrain conditions and rider preferences throughout the ride, rather than requiring pre-set or range-limited adjustments
2Weight of moving object
If gas spring shocks are used to reduce weight, then component weight is reduced, but adjustability becomes complex
Solution Approach 1:
The patent adjusts the spring rate parameter of the gas spring by changing the gas pressure within the chamber. This allows the rider to modify the effective spring rate to match different terrain conditions and personal preferences without requiring complex mechanical adjustment mechanisms, maintaining the weight advantage of gas springs while improving adjustability
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
Enables riders to adjust the damping rate in real-time, improving the ride feel by allowing customizable damping characteristics across various ranges of travel, enhancing the bicycle's responsiveness and comfort on different terrains.
Implementation Method 1
The first valve may be capable of permitting the compressed gas to flow between the compression chamber and the damping chamber
Implementation Method 2
The piston may slidingly interfit with the annular tube and be capable of compressing a compressible gas in the compression chamber
Implementation Method 3
The effective force may be at least partially applied by a bias. The bias may be a spring
Data Source
AI summary
A suspension unit for a front fork of a vehicle includes an annular tube. The first tube defines a compression chamber and a damping chamber. A damper includes a first valve allowing gas to variably flow from the compression chamber to the damping chamber and a second valve allowing gas to flow from the damping chamber to the compression chamber. An external adjuster allows a rider to adjust the first valve to improve ride conditions.