Separable Bicycle Bottom Bracket Cable Guide Angles
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Solution Overview
Problem
Existing bottom bracket cable guides for bicycles are typically one-piece, making it difficult to attach and secure front and rear derailleur cables at the bottom bracket area due to the different angles required for each cable, leading to potential interference and inefficient routing.
Innovation Solution
A separable cable guide system comprising a first guide with a first cable conduit extending at a first angle and a second guide with a second cable conduit extending at a different angle, both attachable to the frame adjacent the bottom bracket using a single fastener, allowing for independent attachment and alignment with arcuate recesses to secure the cables effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a one-piece cable guide is used to hold both front and rear derailleur cables, then the structure is simpler, but it becomes difficult to accommodate different cable angles and prevents independent maintenance
Solution Approach 1:
The cable guide is divided into separate first and second guides, each accommodating a different cable (front derailleur cable and rear derailleur cable respectively). This segmentation allows each guide to be independently configured for its specific cable's routing angle and maintenance requirements, resolving the contradiction between structural simplicity and routing flexibility.
2Manufacturing precision
If cables are routed through the frame at different angles, then proper cable alignment is achieved, but attachment and securing becomes more difficult
Solution Approach 1:
The cable guides are designed with adjustable or adaptable mounting mechanisms that can accommodate different cable angles. The separable design allows each guide to be independently positioned and angled to match the specific routing requirements of front and rear derailleur cables, achieving precise alignment while maintaining ease of installation and adjustment.
Data Source
AI summary
A cable guide for a bicycle including a frame that has a bottom bracket. The cable guide includes a first guide that is attachable to the frame adjacent the bottom bracket and that supports a first cable, and a second guide that is attachable to the frame adjacent the bottom bracket and that supports a second cable. The first guide includes a first cable conduit that extends into the frame at a first angle, and the second guide includes a second cable conduit that extends into the frame at a second angle different from the first angle.