Adjustable Shock Assembly With Active Damping Control

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Solution Overview

Problem

Existing shock assemblies lack the ability to dynamically adjust shock absorption based on terrain and vehicle utilization scenarios, leading to suboptimal ride comfort and performance.

Innovation Solution

An adjustable shock assembly with active and semi-active damping components, controlled by a suspension controller and sensors, allows for real-time adjustments in shock absorption characteristics based on terrain and vehicle conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed damping characteristics are used in shock assemblies, then the structure is simple and reliable, but the ride comfort and performance are suboptimal for varying terrain conditions

Engineering Contradiction:
Improveshock absorption adaptabilityVSAvoidshock assembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shock assembly incorporates adjustable damping components that allow the damping characteristics to be dynamically changed based on terrain and vehicle conditions. The active valve assembly and rebound valve assembly can be adjusted in real-time to optimize shock absorption for different operating scenarios, transforming the fixed system into a dynamic one.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements adjustability in damping parameters through multiple valve assemblies that can modify fluid flow characteristics. By changing the damping parameters (compression and rebound damping) based on external conditions, the system achieves versatility without requiring complete redesign for each terrain type.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If adjustable damping components are added to shock assemblies, then shock absorption optimization is achieved, but the device complexity increases

Engineering Contradiction:
Improveride comfort reliabilityVSAvoidshock assembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The shock assembly is divided into multiple functional segments including active valve assembly, rebound valve assembly, compression valve assembly, and bypass valve assembly. Each segment handles specific damping functions independently, allowing for targeted optimization while maintaining overall system reliability through modular functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shock assembly integrates multiple valve assemblies that can operate in combination to provide various damping modes. The system can function in different configurations (full damping, bypass mode, rebound-only mode) to handle diverse terrain conditions, making the complex system universally applicable to multiple scenarios.

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

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

Enhances ride comfort and performance by optimizing shock absorption settings for different terrains and usage scenarios, providing improved handling and reduced impact transmission to the vehicle's suspended components.

Implementation Method 1

Shock assemblies (e.g., dampers, shock absorbers, etc.) are used in numerous different vehicles and configurations to absorb some or all of a movement that is received at an unsprung portion of a vehicle

Methodology Applied
Scientific EffectHydraulic damping: Viscous Damping

Data Source

PatentUS20250277519A1Adjustable shock assembly
Publication Date: 2025.09.04 FOX FACTORY INC
  • US20250277519A1 patent drawing
  • US20250277519A1 patent drawing
  • US20250277519A1 patent drawing

AI summary

An adjustable shock assembly is disclosed herein. The adjustable shock assembly includes a damper body having a main chamber with a working fluid therein. An adjustable active valve assembly comprising: a first parallel flow pathway comprising an active valve; and a second parallel flow pathway comprising a firm mode blowoff stack and a firm mode adjuster to adjust a blowoff pressure of the firm mode blowoff stack. A main piston coupled with a piston shaft, and a fluid pathway fluidly coupling the main chamber with the adjustable active valve assembly which is fluidly coupled with a reservoir