Replaceable Dry Valving for Quick Shock Absorber Tuning
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Solution Overview
Problem
Traditional shock absorbers require disassembly and fluid drainage to change damping characteristics, which is time-consuming, tedious, and often necessitates specialty tools and a controlled environment, limiting user flexibility in adjusting the shock absorber behavior for different driving conditions.
Innovation Solution
A shock absorber system with replaceable dry valving that allows for adjustable damping characteristics without draining the fluid, featuring a valve system with a movable valve portion and a spring preload adjuster, enabling quick changes to the damping behavior without disassembly, and allowing for separate adjustment of each valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional shock absorbers are used with fixed valving, then the damping characteristics are stable and reliable, but the adaptability to different driving conditions is poor and changing valving requires disassembly and fluid drainage
Solution Approach 1:
The valve system is divided into separate modular components: a first assembly containing the movable valve portion sealed within a housing, and a second assembly containing the spring that can be independently removed. This segmentation allows users to change damping characteristics by simply swapping the second assembly without disassembling the entire shock absorber or draining fluid, thereby improving adaptability while managing complexity through modular design
Solution Approach 2:
The spring assembly (second assembly) is extracted as a separate removable component from the valve system. This allows the spring to be independently replaced to change damping characteristics without affecting the sealed first assembly containing the valve portion, enabling easy adaptation to different driving conditions while maintaining system reliability
2Ease of operation
If traditional shock absorbers require disassembly to change damping characteristics, then the valve system is simple and sealed, but the ease of operation for adjusting damping is poor and requires specialty tools
Solution Approach 1:
The valve system is segmented into a permanently installed first assembly and a removable second assembly. This allows damping characteristic changes by simply swapping the second assembly without time-consuming disassembly of the entire shock absorber or fluid drainage operations, significantly reducing the time required and improving ease of operation
Solution Approach 2:
The first assembly is pre-configured with the sealed valve portion and housing before installation in the shock absorber. This preliminary sealing and configuration allows the second assembly to be independently replaced without risking fluid leakage or requiring complex disassembly procedures, enabling quick damping adjustments while maintaining system integrity
3Reliability
If the valve system uses a sealed first assembly with movable valve portion, then the reliability and sealing are improved, but the ease of repair and adjustment is reduced
Solution Approach 1:
The valve system is segmented into a sealed first assembly containing the movable valve portion and a separate second assembly containing the spring. This segmentation maintains sealing reliability by keeping the valve portion permanently sealed within the first assembly, while improving ease of repair by allowing the second assembly to be independently removed and replaced without compromising the seal
Solution Approach 2:
The spring assembly (second assembly) is extracted as a separate removable component, allowing it to be independently replaced for repair or adjustment purposes. This extraction maintains the sealing integrity of the first assembly while enabling easy maintenance and adjustment of damping characteristics by simply replacing the external second assembly
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 users to quickly alter the damping characteristics of the shock absorber without disassembly or fluid drainage, improving usability and flexibility by allowing adjustments to be made while the shock absorber remains installed, reducing the need for specialty tools and controlled environments.
Implementation Method 1
The second assembly includes a spring for resisting the movement of the movable valve portion via a spring pressure
Implementation Method 2
The housing includes at least one seal to seal the wet portion of the valve chamber from the dry portion
Implementation Method 3
Shock absorbers operate to absorb kinetic energy (motion) that are input to the shock at one end (wheel) and reduce the transfer of such motion to a second end (vehicle body)
Data Source
AI summary
A replaceable valve includes a spring preload adjuster and a spring. The spring is configured to be positioned at a first side of the spring preload adjuster. The replaceable valve includes a valve cap positioned at a second, opposite side of the spring preload adjuster. The valve cap is configured to attach to a shock absorber.