Bicycle Handlebar Vibration Dampener Design
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Solution Overview
Problem
Bicycle handlebar assemblies, particularly those for road and mountain bikes, fail to effectively dampen and isolate riders from vibrations during operation, leading to increased fatigue and discomfort, with existing solutions either increasing complexity, weight, or providing inadequate vibration reduction.
Innovation Solution
A bicycle handlebar assembly featuring a pliable dampener integrated into the handlebar body, which absorbs vibrations, and a grip assembly with an elastomer material that further reduces vibration transmission to the rider, allowing for a robust and lightweight design that minimizes rider interaction with rigid structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a robust steerer assembly is used to support the handlebar, then the handlebar can withstand vigorous rider interaction, but the vibration isolation performance deteriorates and the weight increases
Solution Approach 1:
The patent introduces a vibration dampener as an intermediary component between the steerer assembly and the handlebar. This dampener absorbs and dissipates vibration energy, preventing it from being transmitted to the handlebar while allowing the steerer assembly to maintain its robust structure for withstanding rider interaction forces.
Solution Approach 2:
The patent changes the physical parameters of the connection between the steerer assembly and handlebar by introducing a compliant, vibration-dampening interface. This modifies the stiffness and damping characteristics of the assembly, allowing the robust steerer to not directly transmit vibrations to the handlebar while maintaining structural strength.
2Reliability
If rigid grip assemblies are securely mounted to the handlebar, then the grip provides sufficient support and control, but the vibration communication to the rider's hands increases
Solution Approach 1:
The patent introduces a vibration dampener as an intermediary element within the grip assembly mounting structure. This dampener is positioned between the handlebar and the grip assembly, allowing the grip to remain securely mounted while filtering out high-frequency vibrations before they reach the rider's hands.
Solution Approach 2:
The patent employs composite construction in the grip assembly, combining rigid materials for structural support with compliant, vibration-dampening materials in the mounting interface. This composite approach allows the grip assembly to maintain secure attachment while reducing vibration transmission to the rider.
3Reliability
If supplemental grip assemblies are rigidly secured to the handlebar, then the grip assembly provides adequate support, but the overall weight of the handlebar assembly increases
Solution Approach 1:
The patent changes the weight and stiffness parameters of the grip assembly mounting system by incorporating a vibration dampener. This dampener is designed to provide adequate support and vibration isolation while minimizing added weight, achieving an optimal balance between reliability and weight reduction.
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 vibration transmission to the rider's hands, enhancing comfort and reducing fatigue by dispersing grip forces over a larger area, while maintaining a robust and lightweight handlebar assembly.
Implementation Method 1
a dampener that is formed of a material that is more pliable than the material of the handlebar body is disposed in the channel and dampens vibration of the body
Implementation Method 2
a grip assembly with an elastomer material that further reduces vibration transmission to the rider
Data Source
Figure 1
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AI summary
A bicycle handlebar assembly (12) that includes a body (98) having at least two grip areas (90,92) positioned for interaction with the hands of a rider. The grip portions or grip areas are preferably spaced apart by a center portion that secures the assembly to a bicycle steerer tube. A channel or detent (136) is formed in the body proximate at least one, and preferably proximate each grip portion or grip area (90,92). A dampener (108,110) formed of a different material than the body is disposed in the detent and dissipates at least a portion of vibration of the body to reduce vibrations communicated to the hands of the rider from handlebar vibration. An optional grip assembly (100) cooperates with the handlebar assembly (12) and is constructed to further dampen handlebar vibration.