Motorcycle Triple Clamp Handlebar Damper for Steering Precision

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Solution Overview

Problem

Conventional motorcycle handlebar fixing systems compromise steering precision on uneven ground and at high speeds due to elastic damping, causing 'handlebar shake', which can be dangerous.

Innovation Solution

A handlebar damper system with a movement axis parallel to the front suspension system, featuring a dynamic and elastic behavior with progressive movement proportional to impact intensity, and adjustable pre-stressing, is integrated into the triple clamps to enhance rider comfort without sacrificing steering precision.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If elastic damping means are placed between the bridge plate and top triple clamp, then rider comfort is improved, but steering precision deteriorates and handlebar shake occurs

Engineering Contradiction:
Improverider comfortVSAvoidsteering precision
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The invention segments the damping function by introducing a specific elastic damping element (spring) that acts only in the vertical direction, separating it from the steering function. This allows vertical vibrations to be absorbed while preserving lateral steering precision, resolving the contradiction between comfort and steering accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The elastic damping means is positioned locally between the bridge plate and top triple clamp, providing targeted vibration absorption at the handlebar mounting point. This localized damping improves comfort without affecting the overall steering mechanism, thereby maintaining steering precision while reducing handlebar shake.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If elastic damping is added to the handlebar fixing system, then comfort on uneven ground is improved, but steering precision at high speed deteriorates

Engineering Contradiction:
Improvecomfort on uneven groundVSAvoidsteering precision at high speed
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The elastic damping element provides dynamic response to vertical vibrations from uneven ground, absorbing shocks and improving comfort. Simultaneously, the damping element's design ensures it does not interfere with high-speed steering precision by maintaining stable lateral positioning while allowing vertical movement.

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If elastic means are placed between bridge plate and top triple clamp, then vertical vibration is reduced, but lateral stability deteriorates causing handlebar shake

Engineering Contradiction:
Improvevertical vibrationVSAvoidlateral stability
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The elastic damping means is specifically configured to provide damping in the vertical direction only, with its orientation and mounting ensuring that lateral stability is maintained. This directional selectivity allows vertical vibration reduction while preventing handlebar shake through preserved lateral rigidity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The damping element is installed with asymmetric orientation relative to the triple clamp and bridge plate, positioned to absorb vertical forces while maintaining lateral stability. This asymmetric configuration ensures that the elastic deformation occurs primarily in the vertical direction, preventing lateral instability and handlebar shake.

Inventive Principle:
Principle #4Asymmetry

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

The handlebar damper system reduces the impact felt by the rider's arms, eliminating the 'handlebar shake' effect while allowing for customizable behavior based on rider corpulence and riding position, thereby improving comfort and precision.

Implementation Method 1

an elastic element, such as a spring or a pressurised gas the behaviour of which is such that pressing the plunger tubes 12 and 13 into the sheaths 10 and 11 is approximately proportional to the amplitude of the force that is exerted on the fork

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a hydraulic element the behaviour of which is such that the pressing of the plunger tubes 12 and 13 into the sheaths 10 and 11 takes place progressively

Methodology Applied
Scientific EffectHydraulic damping: Viscous Damping

Data Source

PatentUS8678414B1Set of triple clamps in a front suspension system of a motorcycle
Publication Date: 2014.03.25 SARL DELTA USINAGE
  • US8678414B1 patent drawing
  • US8678414B1 patent drawing
  • US8678414B1 patent drawing

AI summary

A set of triple clamps in a front suspension system of a motorcycle, has a top triple clamp and a bottom triple clamp designed to provide a pivoting connection of the front suspension system of the motorcycle with the frame of the motorcycle. The set also has a fixing system for receiving the handlebars of the motorcycle and fixing them to the top triple clamp. According to one feature, the fixing system has a handlebar damper system the movement axis of which is substantially parallel to the movement axis of the front suspension system of the motorcycle.