Handlebar Mount Assembly With Elastomeric Vibration Isolation
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Solution Overview
Problem
Current handlebar mounting systems for cycles fail to effectively dampen vibrations transmitted from the steering mechanism to the rider, leading to an uncomfortable riding experience.
Innovation Solution
A handlebar mount assembly that incorporates elastomeric sleeves and a tension clamp system, allowing the handlebars to float within a polymer sleeve, creating a suspension effect that mitigates vibrations by preventing metal-to-metal contact between the handlebar and the steering mechanism, thereby providing a smoother ride.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid metal-to-metal contact is used between handlebar and steering mechanism, then structural strength and stability are improved, but vibration transmission to the rider increases
Solution Approach 1:
The patent introduces elastomeric sleeves and bushings as intermediary components between the metal handlebar and steering mechanism. These elastomeric materials serve as mediators that physically separate the metal surfaces, allowing the handlebar to maintain structural strength while the elastomeric layer absorbs and dampens vibrations, preventing their transmission to the rider's hands.
Solution Approach 2:
The patent employs composite construction by combining metal components (handlebar, brackets) with elastomeric materials (sleeves, bushings). This composite approach allows the metal portions to provide structural strength and rigidity, while the elastomeric portions provide vibration damping and shock absorption, resolving the contradiction between strength and vibration transmission.
2Object-affected harmful factors
If elastomeric sleeves are introduced to dampen vibrations, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where elastomeric sleeves are positioned within the handlebar mount assembly, and elastomeric bushings are nested within the bracket structures. This nesting approach allows the vibration-damping components to be integrated into the existing assembly without requiring separate mounting structures, thereby reducing overall device complexity while still providing vibration dampening.
Solution Approach 2:
The patent uses thin elastomeric sleeves and bushings that conform to the existing structural geometry. These flexible, thin-walled components can be easily installed within the existing metal framework without requiring major design changes, thus adding vibration damping functionality with minimal increase in device complexity.
3Object-affected harmful factors
If the handlebar is allowed to float within the polymer sleeve, then vibration isolation is improved, but handling precision may deteriorate
Solution Approach 1:
The patent creates a dynamic mounting system where the handlebar can move slightly within the elastomeric sleeves, allowing the system to adapt to vibrations and shocks. The elastomeric material provides a compliant interface that moves with the handlebar during normal operation, isolating vibrations while maintaining sufficient mechanical coupling for precise handling control when needed.
Solution Approach 2:
The elastomeric sleeves and bushings provide pre-positioned cushioning elements that are already in place before the handlebar is installed. This beforehand cushioning ensures that vibration isolation is active from the moment of installation, while the consistent mechanical properties of the elastomeric materials maintain predictable handling characteristics.
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 solution effectively reduces the transmission of vibrations to the rider, enhancing the comfort and stability of the ride by creating a soft medium between the rider and the cycle, improving the overall riding experience.
Implementation Method 1
an elastomeric first sleeve, an elastomeric second sleeve and a tension clamp assembly are disposed about the cycle handlebar
Implementation Method 2
The handlebar mount assembly allows the handlebars to float within a polymer sleeve, creating a suspension effect that mitigates vibrations
Data Source
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AI summary
A handlebar mount assembly for isolating a cycle handlebar from vibrations emanating from operation of a cycle, the assembly including a bottom bracket assembly configured for attachment to a cycle steering mechanism, a top bracket assembly configured for attachment to the bottom bracket assembly, a pair of polymer sleeves configured for placement around the handlebar, a tension clamp configured for clamping the handlebar and a clamp bushing configured for placement between the tension clamp and the top bracket assembly. The sleeves prevent direct contact between the top bracket assembly and the bottom bracket assembly, and the bushing prevents direct contact between the tension clamp and the top bracket assembly. In this manner, the handlebar mount assembly prevents direct and indirect contact of the steering mechanism to the handlebar through the metal components of the handlebar mount assembly.