Bicycle Compression Ring Cable Alignment
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Solution Overview
Problem
Existing bicycle compression rings do not effectively allow brake and shift cables to pass through the stem assembly, leading to friction and operational inefficiencies at the bending points of the cables.
Innovation Solution
A bicycle stem design with integrated outer casing holders and an inner cable guiding member that reduces friction by allowing the inner cable to extend between these holders, forming a bend, and a compression ring with cable passing parts for alignment with the stem's cable passing parts, facilitating smooth cable passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables run through the tubular part of the bicycle head parts assembly, then the structural integrity of the stem is maintained, but friction and operational inefficiencies occur at the bending points of the cables
Solution Approach 1:
The compression ring is divided into multiple functional segments: a first compression portion for compressing the bearing, a second compression portion for compressing the stem, and cable passing parts that allow cables to pass through. This segmentation enables independent optimization of each function, reducing friction at cable bending points while maintaining structural integrity.
Solution Approach 2:
The compression ring acts as an intermediary component between the bearing and the stem, providing a structured path for cables to pass through. The cable passing parts in the compression ring serve as intermediaries that guide and support the cables, reducing friction at the bending points while allowing the compression function to be performed.
2Stability of the object's composition
If a compression ring is used to compress the bearing and stem, then the structural stability is improved, but the complexity of the head parts assembly increases
Solution Approach 1:
The compression ring is designed as a multi-functional component that simultaneously performs compression of the bearing, compression of the stem, and provides cable passing parts. This universality reduces the need for separate components, thereby reducing overall assembly complexity while maintaining structural stability.
Solution Approach 2:
The compression ring merges the compression function and cable passage function into a single integrated component. The first and second compression portions are combined with the cable passing parts in one piece, reducing the number of parts and simplifying the assembly process while maintaining the necessary structural stability.
3Manufacturing precision
If outer casing holders are integrated into the stem to guide cables, then cable alignment is improved, but the manufacturing complexity of the stem increases
Solution Approach 1:
The stem is segmented into the main body portion and separate outer casing holders that can be manufactured independently and then assembled. This segmentation allows for simplified manufacturing of each component while achieving precise cable alignment through the integrated design of the holders positioned within the stem's internal cavity.
Data Source
AI summary
A compression ring that is configured to be disposed between a bearing and a stem of a bicycle head parts assembly. The compression ring includes a central opening for receiving a steering column, a cut out portion, a first cable passing part disposed radially outwardly from the central opening, and a first positioning part for positioning the compression ring with respect to the stem so that the first cable passing part is aligned with a second cable passing part defined in the stem.