Modular Bicycle Cockpit Unit for Stable Geometry Adjustment
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Solution Overview
Problem
Existing bicycle components with modular handlebar stems and handlebars face issues of instability due to screw connections, require rerouting of cables during geometry changes, and lack a uniform appearance, compromising safety and ease of adjustment.
Innovation Solution
A cockpit unit comprising two modular components - a stem module and a handlebar module - that can be coupled in different ways, allowing for adjustable operating geometries without affecting cable routing and ensuring stability through positive-locking guide elements and secure fastening, even if screw tension decreases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular design with interchangeable intermediate elements is used to adjust length, then adaptability is improved, but the cables already laid in the intermediate element must be completely rerouted, increasing complexity and time loss
Solution Approach 1:
The cockpit unit is divided into separate modules (stem module, handlebar module, intermediate elements) that can be independently assembled and disassembled. This segmentation allows for length adjustment by simply changing the intermediate element without affecting cable routing, as each module maintains its own cable pathways.
Solution Approach 2:
The intermediate elements are designed with universal cable guide structures that accommodate cables in multiple positions. The cable guides are integrated into the module design, allowing the same intermediate element to be used for different length configurations without requiring cable rerouting, thus achieving multi-functionality.
2Adaptability or versatility
If clamping elements are screwed together in the longitudinal direction via a screw to allow length adjustment, then adaptability is improved, but the stability decreases considerably if the screw loosens even a little, compromising safety
Solution Approach 1:
The connection system is segmented into separate clamping elements that can be adjusted independently, with the intermediate element serving as a stable connector. This segmentation allows for length adjustment while maintaining stable connections through the intermediate element's integration with both clamping elements.
Solution Approach 2:
The intermediate element acts as an intermediary component between the clamping elements, providing a stable connection that does not rely on screw tension. The intermediate element is designed to maintain consistent positioning and stability while allowing for length adjustment through its integration with the clamping elements.
3Weight of moving object
If different sizes, widths, lengths and geometries are manufactured from fibre composite material as a single piece to reduce weight, then weight is reduced, but different tools are required for production, enormously increasing costs
Solution Approach 1:
The cockpit unit is segmented into standardised modules that can be manufactured using the same fibre composite processes. This segmentation allows for weight reduction through optimized individual components while maintaining ease of manufacture through standardized production procedures, avoiding the need for specialized tools for each variation.
Solution Approach 2:
The modular design creates universal components that can be used across different cockpit unit configurations. The same fibre composite manufacturing processes and tools can produce various sizes, widths, lengths and geometries by simply changing the module combinations, thereby reducing production costs while maintaining weight efficiency.
4Adaptability or versatility
If a normal stem is provided without uniform cockpit design to allow length adjustment, then adaptability is improved, but the appearance and design uniformity deteriorates
Solution Approach 1:
The cockpit unit is segmented into modules with standardized interfaces and designs. This segmentation allows for length adjustment through intermediate elements while maintaining uniform appearance, as each module is designed to integrate seamlessly with the others, creating a consistent aesthetic across different configurations.
Solution Approach 2:
Each module is designed with local quality optimization, where the specific features of each component (stem module, handlebar module, intermediate elements) are tailored to maintain overall uniformity. The local designs are coordinated to ensure that the entire cockpit unit appears unified and consistent, regardless of the specific length configuration.
Data Source
AI summary
A bicycle component including a cockpit unit with at least two cockpit modules. A first cockpit module is designed as a stem module. A second cockpit module is designed as a handlebar module. The cockpit modules can be coupled with each other in different ways to enable different seating positions with the cockpit unit. One of the cockpit modules includes an insertion part and one of the cockpit modules includes a receptacle part. The insertion part can be inserted into the receptacle part and can be connected to the insertion part in at least two different relative positions in order to provide two different operating geometries with the cockpit unit by assembling differently. A third cockpit module is arranged between the first and second cockpit modules and surrounds the first and/or second cockpit module in sections.