Annular Base Valve Assembly for Real-Time Shock Damping Control

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Solution Overview

Problem

Current shock absorber systems lack the ability to dynamically adjust shock absorption characteristics in real-time based on changing terrain and load conditions, leading to compromised ride comfort, vehicle performance, and increased risk of steering issues, suspension failure, and tire blowouts due to uneven ride heights and load distribution.

Innovation Solution

The integration of an annular base valve system with a coaxial annular base valve assembly and a clocked base valve assembly, which provides a motion-modifiable connection between vehicle components, allowing for adjustable fluid flow and reduced manufacturing and assembly complexities, enabling flexible control solenoid placement and leak-path detection features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional shock absorber systems are used, then the structure is simple and manufacturing is easy, but the ability to dynamically adjust shock absorption characteristics is lacking

Engineering Contradiction:
Improvedynamic adjustment capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shock absorber system is divided into multiple independent valve assemblies (first base valve assembly, second base valve assembly, third base valve assembly) that can independently control different aspects of shock absorption. Each valve assembly can be adjusted separately, allowing dynamic adaptation to different terrain and load conditions while maintaining manageable system complexity through modular design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adjustment capabilities by providing multiple adjustable valve assemblies that can modify fluid flow characteristics in real-time. The valve assemblies include adjustable orifices and flow paths that can be changed to adapt shock absorption characteristics to varying operating conditions, transforming a static system into a dynamic one

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple valve assemblies are integrated, then shock absorption control is improved, but manufacturing and assembly complexities increase

Engineering Contradiction:
Improveshock absorption controlVSAvoidmanufacturing and assembly
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Multiple base valve assemblies are integrated into a single shock absorber body, combining multiple shock absorption control functions into one unified component. This merging approach allows the system to provide enhanced adaptability and control capabilities while maintaining a compact structure that simplifies installation and reduces the number of separate components to be assembled

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

Each base valve assembly is designed to perform multiple functions within the shock absorber system, including compression damping, rebound damping, and bypass functions. This multi-functionality reduces the need for separate specialized components, thereby simplifying manufacturing and assembly while maintaining comprehensive shock absorption control

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If fixed shock absorption characteristics are used, then the system is reliable and simple, but ride comfort and vehicle performance are compromised

Engineering Contradiction:
Improvesystem reliabilityVSAvoidride comfort and performance
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The shock absorber system enables changes in key parameters such as orifice size, flow path area, and valve spring preload through multiple adjustable valve assemblies. These parameter changes allow the system to maintain reliability while adapting to different ride conditions, improving both ride comfort and vehicle performance by optimizing shock absorption characteristics for specific operating scenarios

Inventive Principle:
Principle #35Parameter changes

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 allows for real-time adjustment of shock absorption characteristics, improving ride comfort and vehicle performance, reducing the risk of steering issues and suspension failure, while simplifying manufacturing and assembly processes, and ensuring proper installation and operation of the damper system.

Implementation Method 1

an annular base valve assembly in fluid communication with the rod side of the active valve piston

Methodology Applied
Scientific EffectHydraulic flow control: Hydraulic Press

Implementation Method 2

an active valve piston having a sealed chamber and an annularly-shaped piston surface exposed to a pressure differential across the piston surface

Methodology Applied
Scientific EffectPressure differential: Pressure Gradient

Implementation Method 3

a solenoid actuator in fluid communication with the sealed chamber of the active valve piston

Methodology Applied
Scientific EffectElectromagnetic actuation: Solenoid

Data Source

PatentUS20220234679A1Damper with an annular base valve flow system
Publication Date: 2022.07.28 FOX FACTORY INC
  • US20220234679A1 patent drawing
  • US20220234679A1 patent drawing
  • US20220234679A1 patent drawing

AI summary

A shock with an annular base valve flow system is disclosed herein. The system includes a housing, said housing having an inner diameter (ID) and an outer diameter (OD). The system also includes an annular base valve assembly, said annular base valve assembly having an OD smaller than said ID of said housing, such that said annular base valve assembly is insertable into said housing. The annular base valve assembly having an intake pathway axially about a portion of said OD of said base valve assembly and an exhaust pathway axially about another portion of said OD of said base valve assembly.