Adjustable Control Arm Detachable Ball Joint Camber Tuning

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Solution Overview

Problem

Existing suspension link systems, particularly control arms, face challenges in fine-tuning camber adjustments due to fixed pivot locations and limited rotational capabilities, which hinder precise wheel alignment, especially in vehicles with non-straight control arms like ATVs and UTVs that require increased ground clearance.

Innovation Solution

A detachable ball joint end with an adjustable set-off between its facing surfaces, allowing for camber adjustments using shims, which can be applied to any control arm geometry, including those with angled configurations, enabling precise camber tuning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a threaded rod end is used on the control arm for camber adjustment, then camber adjustment capability is provided, but the ball joint end can only be rotated in 180-degree increments which prevents fine tuning

Engineering Contradiction:
Improvecamber adjustment capabilityVSAvoidfine tuning precision
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The control arm is segmented into a main body and a detachable ball joint end component. This segmentation allows the ball joint end to be removed and reattached at different angular orientations, enabling fine-tuning of camber adjustments beyond the limited 180-degree increments of traditional threaded rod ends.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The ball joint end is designed to be detachable and reattachable at variable angles, transforming the static, fixed-orientation connection into a dynamic, adjustable connection. This allows the control arm to adapt its geometry for precise camber tuning while maintaining structural integrity.

Inventive Principle:
Principle #15Dynamics

2Length of moving object

If the control arm is angled to increase ground clearance in ATVs and UTVs, then ground clearance is improved, but the control arm geometry prevents rotation necessary for threaded rod end adjustments

Engineering Contradiction:
Improveground clearanceVSAvoidadjustment capability
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

By segmenting the control arm into a main body and a detachable ball joint end, the invention allows the control arm to maintain its angled geometry for ground clearance while enabling the ball joint end to be reoriented for adjustments. The detachable design overcomes the geometric constraint that would prevent rotation in fixed-orientation systems.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control arm utilizes a composite construction combining the main arm structure with a separate, detachable ball joint end component. This composite approach allows each component to be optimized independently - the main arm for ground clearance geometry and the ball joint end for adjustability.

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If round bolt holes are used for securing control arms to the chassis, then manufacturing is simplified, but the fixed pivot location prevents camber adjustment

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidcamber adjustment capability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The invention introduces dynamic adjustability to the control arm system through the detachable ball joint end, which can be reoriented at different angles. This transforms the static system with fixed pivot locations into a dynamic system that can adapt camber settings while maintaining the simple round bolt hole design for chassis mounting.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11130378B1Adjustable control arm and method of using the same to adjust camber
Publication Date: 2021.09.28 RING & PINION SERVICE
  • US11130378B1 patent drawing
  • US11130378B1 patent drawing
  • US11130378B1 patent drawing

AI summary

A suspension link, such as a control arm, has a detachable ball joint end which attaches to a ball joint connected to the wheel hub of a vehicle. The detachable ball joint end also attaches to a housing member of an opposite facing intermediate portion of the suspension link. There is an adjustable set off between opposite facing surfaces of the detachable ball joint end and the housing member. Adjustments in the set off, which adjust the camber of the vehicle wheel, may be made by placing one or more shims between the detachable ball joint end and the bolt housing.