Bicycle Fork Damping Structure for Handlebar Vibration Isolation
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Solution Overview
Problem
Conventional bicycle forks lack a shock-absorbing and vibration-isolating structure between the fork and the handlebar stem, leading to direct transmission of impact forces to the handlebar, causing discomfort and affecting bicycle controllability, which may result in accidents.
Innovation Solution
A shock-absorbing device is introduced with a damping unit between the fork and the handlebar stem, featuring a damping unit and a connection unit with engaging portions to prevent direct transmission of vibrations, utilizing materials with different elastic moduli to absorb shocks and isolate vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional fixed connection structure is used between the fork and handlebar stem, then the structural simplicity and ease of manufacture are improved, but the vibration isolation and shock absorption capability deteriorate
Solution Approach 1:
The patent introduces a damping unit as an intermediary component between the fork and handlebar stem. This damping unit includes a damping element that is not directly connected to either the fork or handlebar stem, allowing it to absorb vibrations and shocks while isolating the two main components. The intermediary damping unit effectively blocks the transmission path of harmful vibrations without complicating the overall manufacturing process.
Solution Approach 2:
The damping unit employs composite material structures, including combinations of metal and non-metal materials with different elastic moduli. The connection unit uses materials with higher elastic modulus for structural strength, while the damping unit incorporates materials with lower elastic modulus for vibration absorption. This composite material approach enables simultaneous achievement of structural integrity and vibration isolation performance.
2Object-affected harmful factors
If a damping unit with different material elastic moduli is introduced, then the shock absorption and vibration isolation effects are improved, but the device complexity increases
Solution Approach 1:
The patent divides the connection system into distinct functional segments: the connection unit (for structural support) and the damping unit (for vibration absorption). Each segment is designed with specific material properties - the connection unit uses materials with higher elastic modulus while the damping unit uses materials with lower elastic modulus. This segmentation allows each component to perform its specialized function efficiently without requiring complex integrated designs.
Solution Approach 2:
The damping unit serves as a mediator that simplifies the overall system by providing a dedicated vibration absorption mechanism. Rather than attempting to design a single complex component that must simultaneously provide both structural support and vibration isolation, the intermediary damping unit handles the vibration absorption function, allowing the connection unit to focus on structural integrity.
3Device complexity
If direct connection between fork and handlebar stem is used, then the structural simplicity is improved, but the comfortability and safety deteriorate due to direct impact transmission
Solution Approach 1:
The patent implements beforehand cushioning by incorporating the damping unit with damping elements positioned between the fork and handlebar stem before impact occurs. These damping elements are pre-configured to absorb and dissipate impact energy and vibrations, providing protective cushioning that enhances rider safety and comfort while maintaining relatively simple structural integration.
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
Enhances comfortability and safety by reducing vibration transmission from the front wheel to the handlebar stem, improving bicycle controllability and preventing shaking.
Implementation Method 1
a damping unit is provided between the fork and a handlebar stem to provide the effect of shock absorption and vibration isolation
Implementation Method 2
provide the effect of shock absorption and vibration isolation, so that an impact generated by a front wheel of the bicycle is prevented from being directly transmitted
Implementation Method 3
The connection unit has a first engaging portion and a second engaging portion. The first engaging portion is adapted to engage with the fork of the bicycle, and the second engaging portion is adapted to engage with the damping unit
Data Source
AI summary
The present disclosure provides a shock-absorbing device for a fork of a bicycle, including a connection unit and a damping unit. The connection unit is adapted to connect to the fork of the bicycle and the damping unit. The fork is connected to a bottom end of the connection unit and is adapted to engage with a front wheel of the bicycle. The damping unit is adapted to engage with a handlebar stem and fit around the connection unit to prevent the connection unit from being in direct contact with the handlebar stem, thereby constituting the shock-absorbing device with good shock-absorbing effect