Integrated Coilover Ride Height Assembly Without External Hydraulics

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional ride height adjustment systems for vehicles are complex and costly due to the use of external pump systems requiring additional valve control manifolds and long hydraulic hose lines, lacking a fully integrated solution.

Innovation Solution

An integrated ride height system with a pump mounted to the shock absorber, incorporating a coilover shock absorber, hydraulic preload cylinder, reservoir, and reversible pump to adjust ride height without additional valves or hoses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If external pump systems are used for ride height adjustment, then ride height can be adjusted, but the system becomes complex and costly due to additional valve control manifolds and long hydraulic hose lines

Engineering Contradiction:
Improveride height adjustment capabilityVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the pump, valve control manifold, and hydraulic hose lines into a single integrated assembly mounted directly on the vehicle frame. This consolidation eliminates the need for separate external components and their associated mounting hardware, directly reducing system complexity while maintaining ride height adjustment functionality

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated assembly serves multiple functions simultaneously: the pump provides hydraulic fluid, the manifold distributes it to multiple shock absorbers, and the hose lines connect all components. This multi-functionality in a single assembly reduces the overall number of components needed in the system

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

2Ease of operation

If external pump systems are used for ride height adjustment, then ride height can be adjusted, but additional components increase system cost

Engineering Contradiction:
Improveride height adjustment capabilityVSAvoidsystem cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

By combining multiple components into a single integrated assembly, the patent reduces the total number of parts that need to be manufactured, inventoried, and assembled. This consolidation directly lowers manufacturing costs while maintaining the full ride height adjustment capability

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If a fully integrated system is implemented, then system complexity is reduced, but integration of pump to shock absorber requires precise mounting

Engineering Contradiction:
Improvesystem integrationVSAvoidmounting precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The integrated assembly is pre-configured and pre-tested as a complete unit before installation on the vehicle. This preliminary assembly allows for precise internal mounting of the pump to the shock absorber in a controlled manufacturing environment, eliminating the need for precise field installation while achieving the benefits of integration

Inventive Principle:
Principle #10Preliminary action

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

Provides a cost-effective and integrated solution for adjusting ride height by directly mounting the pump to the shock absorber, eliminating the need for external components and simplifying the system design.

Implementation Method 1

a reversible pump coupled between the hydraulic preload cylinder and the reservoir, wherein the pump operates to pump hydraulic fluid from the reservoir to the hydraulic preload cylinder to extend the hydraulic preload cylinder

Methodology Applied
Scientific EffectHydraulic fluid pressure: Hydraulic Press

Implementation Method 2

pump operates to pump hydraulic fluid from the hydraulic preload cylinder to the reservoir to retract the hydraulic preload cylinder

Methodology Applied
Scientific EffectHydraulic fluid pressure: Hydraulic Press

Implementation Method 3

the hydraulic preload cylinder engages an end of a coil spring of the coilover shock absorber

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentUS12384212B1Integrated damper ride height system
Publication Date: 2025.08.12 FOX FACTORY INC
  • US12384212B1 patent drawing
  • US12384212B1 patent drawing
  • US12384212B1 patent drawing

AI summary

An integrated ride height system is provided wherein the system is configured couple to a vehicle. The system includes a coilover shock absorber and a hydraulic preload cylinder coupled to a shock body of the coilover shock absorber. The hydraulic preload cylinder engages an end of a coil spring of the coilover shock absorber. The system includes a reservoir coupled to the shock absorber allowing hydraulic fluid to flow between the reservoir and the coilover shock absorber. The system includes a reversible pump coupled between the hydraulic preload cylinder and the reservoir, wherein the pump operates to pump hydraulic fluid from the reservoir to the hydraulic preload cylinder to extend the hydraulic preload cylinder to increase ride height of the vehicle and operates to pump hydraulic fluid from the hydraulic preload cylinder to the reservoir to retract the hydraulic preload cylinder to decrease ride height of the vehicle.