Bicycle Steering Stop With Cable Recesses for Top Tube Protection
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Solution Overview
Problem
Existing steering stops for bicycle handlebars are not suitable for integrated cockpits on racing and triathlon bikes, and they do not effectively protect the top tube from damage during falls or tips, especially in frames made of fiber-reinforced plastics like carbon.
Innovation Solution
A steering stop with a first stop element clamped to the fork shaft and a second stop element fixed to the bicycle frame, featuring recesses for cable passage and a cover element, limits steering angle and protects the top tube by absorbing impact, while allowing easy installation and replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional steering stop with two screws is used to protect the top tube, then the top tube is protected from damage, but the steering stop is not suitable for integrated cockpits and requires complex installation
Solution Approach 1:
The steering stop is divided into two separate stop elements: a first stop element that limits steering angle and a second stop element that protects the top tube. This segmentation allows each element to be optimized for its specific function and installed independently, simplifying the overall installation process while maintaining protection effectiveness
Solution Approach 2:
The first stop element serves multiple functions: it limits the steering angle, provides a mounting point for the second stop element, and integrates with the integrated cockpit design. This multi-functionality reduces the need for separate components and simplifies installation
2Ease of operation
If cables are routed through the fork shaft interior, then cable routing is achieved, but the fork shaft structure becomes complex and difficult to assemble
Solution Approach 1:
The cable routing function is extracted from the fork shaft interior and relocated to the outer surface of the first stop element. Cables are guided through channels in the stop element itself rather than through the fork shaft, simplifying the fork shaft structure and making assembly easier while maintaining effective cable routing
Solution Approach 2:
The first stop element acts as an intermediary structure that provides dedicated cable routing channels on its outer surface. This mediator element facilitates cable routing without requiring modifications to the fork shaft interior, simplifying both the fork shaft structure and the overall assembly process
Data Source
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AI summary
A steering stop for bicycle handlebars has a first stop element (10). The stop element (10) can be clamped to the steerer tube of a bicycle fork and has two stops (14, 16). A second stop element (12) can be fixed to the bicycle frame and interacts with the first stop element (10). The first stop element has at least one recess (32, 34) to allow cables, for example from a brake and/or shift unit, to pass through it.