Bicycle Pedal Axle Removable End Cap Maintenance
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Solution Overview
Problem
Conventional bicycle pedal structures face difficulties in maintenance and replacement due to wear of the hexagonal lock hole, which prevents the use of a hex wrench, necessitating alternative tools and increasing complexity for disassembly.
Innovation Solution
A detachable end cap is integrated with the axle member, allowing for easy removal and replacement when the combination bore is worn, and enabling rotation of the axle member using various tools, such as a hex wrench, open-end wrench, or pipe wrench, facilitating maintenance and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lock hole is wrenched by a hex wrench, then the pedal can be removed from the crank for replacement or maintenance, but the hexagonal shape of the lock hole will be worn into a circular shape, causing the hex wrench to idle and preventing further wrenching
Solution Approach 1:
The invention divides the pedal structure into two separate components: the axle member (containing the lock hole) and the end cap (containing the combination bore). This segmentation allows the combination bore to be replaced independently when worn, while the axle member remains intact. The end cap can be removed and replaced without damaging the pedal body, resolving the contradiction between ease of operation and reliability of the locking mechanism.
2Ease of repair
If the lock hole is worn and the pedal body is sabotaged to expose the axle, then the axle and crank can be separated by other tools, but the difficulty for pedal replacement increases
Solution Approach 1:
The invention extracts the combination bore from the axle member and places it in a separate end cap component. This allows the combination bore to be taken out and replaced independently when worn, without needing to sabotage the pedal body or use complex alternative methods. The end cap serves as a removable container for the combination bore, simplifying the replacement process.
3Adaptability or versatility
If the combination bore is worn, then alternative tools must be used to separate the axle and crank, but the process becomes more complex and time-consuming
Solution Approach 1:
The invention applies the principle of discarding and recovering by allowing the end cap (containing the combination bore) to be discarded when worn and replaced with a new one. The axle member and pedal body are recovered and reused, avoiding the need to discard entire components. This significantly reduces maintenance time and complexity compared to sabotaging the pedal body or using alternative tools.
Data Source
AI summary
A bicycle pedal structure includes a pedal body having an axle bore; an axle member axially passing through the pedal body and rotatably combined with the pedal body, with the connection portion of the axle member combined with a crank of a bicycle; and an end cap having a combination portion which is removably combined with another combination of the axle member. The combination bore of the end cap is allowed to be combined with a corresponding tool for driving the axle member to rotate. With such a removable end cap, the replacement of the end cap and pedal components is facilitated.