Adjustable Loop Line Fixing Element for Bicycle Frame Tubes
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Solution Overview
Problem
Existing methods for fixing lines in bicycle frame tubes, such as hydraulic and Bowden cables, often result in clattering noises due to resonance in thin-walled tubes and CFRP materials, and existing solutions like foamed materials or complex guide tubes are either cumbersome or interfere with mechanical cables.
Innovation Solution
A line fixing element with an adjustable loop element connected to a holding element that can be easily tightened to secure lines within the tube, avoiding interference with mechanical cables and allowing for simple and economic installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If foamed material is used to enclose lines, then clattering noises are reduced, but mounting complexity increases and mechanical cables are interfered with
Solution Approach 1:
The harmful foamed material is extracted and replaced with a simple loop element that can be easily mounted and adjusted, eliminating both the noise problem and the mounting complexity issue simultaneously
Solution Approach 2:
The loop element acts as an intermediary component between the line and the frame tube, providing a simple mechanical solution that avoids the need for complex foamed material enclosures while still preventing clattering noises
2Reliability
If continuous welded guide tubes are provided in aluminum frames, then line fixation is achieved, but weight increases and manufacturing cost increases
Solution Approach 1:
The continuous welded guide tube is segmented into discrete loop elements that can be independently positioned and attached, dramatically reducing the total material required and thus the weight, while maintaining effective line fixation at critical points
Solution Approach 2:
The loop element is a simple, inexpensive component that can be easily attached and removed, replacing the expensive and heavy permanent welded guide tube structure while providing sufficient fixation functionality
3Reliability
If plastic clips are used to clamp lines, then line fixation is achieved, but handling difficulty increases and mechanical cables are interfered with
Solution Approach 1:
The loop element provides dynamic adjustment capability, allowing the opening width to be easily changed during installation and positioning, making handling simple while maintaining secure line fixation, unlike rigid plastic clips
4Object-affected harmful factors
If lines are fixed tightly in the frame tube, then clattering noises are reduced, but interference with mechanical cables increases
Solution Approach 1:
The loop element provides localized line fixation at specific positions within the frame tube, allowing mechanical cables to pass through or alongside without interference while still preventing clattering noises where the loop contacts the line
Data Source
AI summary
A line fixing element for lines arranged in bicycle frame tubes includes a loop element. The loop element defines an opening width, with the loop element being designed similar to a cable strap. A holding head of the loop element is received by a holding element. The holding element further serves for fixation in a bicycle frame tube, with the loop element being arranged in the frame tube. The line to be fixed is passed through the loop element and fixed by reducing the opening width.