Bicycle Quick Release Structure With Resilient Noise Buffering
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Solution Overview
Problem
Conventional bicycle quick release structures generate noise due to the shaking clamping element bumping against the shaft due to manufacturing tolerances, leading to instability and wear.
Innovation Solution
A quick release structure with a shaft featuring a recess and annular groove, a clamping element with clamping members, and a resilient member, providing multiple contact points for stable assembly and reduced noise through buffering and supporting effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the clamping element is manufactured with tolerance to fit around the shaft, then the clamping element can be assembled with the shaft, but the combination stability deteriorates and noise is generated due to gaps between the clamping element and shaft
Solution Approach 1:
A resilient member is introduced as an intermediary component between the clamping element and the shaft. This resilient member fills the gap caused by manufacturing tolerances, providing both buffering and supporting effects. The resilient member maintains stable contact between the clamping element and shaft without requiring tight manufacturing tolerances, thus resolving the contradiction between ease of manufacture and combination stability.
2Ease of manufacture
If the clamping element has tolerance for assembly, then the assembly process is simplified, but noise is generated by the shaking clamping element bumping against the shaft
Solution Approach 1:
The resilient member is pre-installed on the shaft to provide cushioning before the clamping element is assembled. This beforehand cushioning absorbs the impact and shaking between the clamping element and shaft, preventing noise generation while allowing manufacturing tolerances. The resilient member acts as a pre-positioned buffer that eliminates the harmful bumping noise during operation.
3Device complexity
If only a resilient member is used for buffering, then the structure is simple, but the combination stability is insufficient due to tolerance gaps
Solution Approach 1:
The invention merges two functions into a single integrated solution: the resilient member provides both buffering (to reduce noise) and supporting (to maintain stability). By combining these two functions in one component, the structure remains simple while achieving both noise reduction and stable combination, resolving the contradiction between device complexity and reliability.
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 structure enhances stability and reduces noise and wear by utilizing resilient and clamping members to stabilize the clamping element, improving the combination with the shaft and extending the useful life of the quick release mechanism.
Implementation Method 1
a resilient member is mounted in the annular groove... the outer surface of the clamping element abuts against an inner surface of the annular resilient member
Implementation Method 2
The clamping member is mounted around the clamping element and is engaged with the quick release handle and the shaft
Data Source
AI summary
A quick release structure has a quick release handle, a shaft, a clamping element, and a clamping member. The shaft has a recess, a cavity, and a resilient member. The recess is defined in an end of the shaft. The cavity is defined in a bottom of the recess. The cavity has a diametrical cross section larger than a diametrical cross section of the recess. The clamping element has two ends. One of the ends is connected with the quick release hand, and the other end extends into the recess. The clamping member is mounted around the clamping element and is engaged with the quick release handle and the shaft.