Adjustable Toe Suspension Arm with Screw Drive Mechanism

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Solution Overview

Problem

Existing vehicle suspension systems lack a simple and effective method for adjusting the toe characteristic, which is crucial for vehicle tracking and control, especially in remote control vehicles, as they often require complex modifications to achieve desired tire angles.

Innovation Solution

An adjustable toe suspension arm design featuring a main suspension bracket, an outer swing bracket, and an adjustment mechanism with a sliding nut and drive screw system that allows for easy rotation of the outer swing bracket relative to the main suspension bracket, enabling precise adjustment of the tire's angle using a screwdriver.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional suspension systems use fixed hinge angles for toe adjustment, then the structure remains simple and robust, but the ease of operation for adjusting toe characteristic deteriorates

Engineering Contradiction:
Improveease of toe adjustmentVSAvoidsuspension system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The suspension arm incorporates an adjustable hinge angle mechanism that transforms the fixed, static connection into a dynamically adjustable one. The hinge angle can be modified along the arc of rotation to achieve desired toe characteristics, allowing the system to adapt its geometry while maintaining structural integrity through the defined arc constraint.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the geometric parameter of the hinge angle position along the arc of rotation. By selecting different hinge angle positions within the arc, the toe characteristic can be adjusted without changing the fundamental suspension structure, enabling parameter variation while preserving the basic design simplicity.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If the toe adjustment requires complex modifications, then the manufacturing precision may be maintained, but the ease of manufacture deteriorates

Engineering Contradiction:
Improveease of toe adjustment implementationVSAvoidtire angle precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The suspension arm is designed with a segmented structure that includes a main body and an adjustable component. The hinge angle adjustment mechanism is segmented into discrete positions along the arc, allowing for simplified manufacturing of each segment while achieving precise toe adjustment through the combination of segments in different configurations.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the suspension arm uses a fixed hinge angle, then the stability of the suspension composition is improved, but the adaptability for different toe characteristics deteriorates

Engineering Contradiction:
Improvetoe characteristic adjustabilityVSAvoidsuspension structure stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The hinge angle is designed to be dynamically adjustable within a defined arc of rotation. This allows the suspension composition to adapt its geometry for different toe characteristics while maintaining stability through the constrained arc movement, preventing random or excessive movements that would compromise structural stability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable hinge angle mechanism serves multiple functions: it maintains the structural stability of the suspension arm while simultaneously enabling adaptation to different toe characteristics. The same mechanism provides both stability through its constrained arc movement and versatility through its adjustable positions, eliminating the need for separate systems for each function.

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

This design allows for a wide range of toe adjustments, enhancing control over remote control vehicles by simplifying the process of changing tire angles, thereby improving vehicle tracking and operator control.

Implementation Method 1

An adjustment mechanism is operably coupled to the main suspension bracket. An actuating mechanism is coupled to the adjustment mechanism. A portion of the actuating mechanism is in contact with the outer swing bracket. When the adjustment mechanism is manipulated, the actuating mechanism moves to rotate the outer swing bracket with respect to the main suspension bracket.

Methodology Applied
Scientific EffectScrew mechanism: Screw

Data Source

PatentUS9950268B2Adjustable toe suspension arm
Publication Date: 2018.04.24 CUSTOM WORKS RC PROD
  • US9950268B2 patent drawing
  • US9950268B2 patent drawing
  • US9950268B2 patent drawing

AI summary

An adjustable toe suspension arm for a vehicle is provided having a main suspension bracket coupled to a vehicle chassis. An outer swing bracket is pivotably coupled to the main suspension bracket. An adjustment mechanism is operably coupled to the main suspension bracket. An actuating mechanism is coupled to the adjustment mechanism. A portion of the actuating mechanism is in contact with the outer swing bracket. When the adjustment mechanism is manipulated, the actuating mechanism moves to rotate the outer swing bracket with respect to the main suspension bracket.