Bicycle Hub Unit Rotation Restriction and Cable Guide
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Solution Overview
Problem
Existing bicycle hub units lack stability when coupled to a bicycle frame, leading to potential interference with cables and other components, and do not effectively restrict rotation to maintain the position of electronic components.
Innovation Solution
A bicycle hub unit featuring a hub axle coupled to a frame with a rotation restriction member and a cable guide structure that restricts rotation and guides cables, ensuring stable coupling and proper positioning of electronic components, while allowing for detachable attachment for improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rotation restriction member is added to couple the hub axle to the frame, then the stability of coupling is improved, but the device complexity increases
Solution Approach 1:
The rotation restriction member integrates multiple functions: it couples the hub axle to the frame, restricts rotation, and includes a cable guide structure. By merging these functions into a single component, the patent achieves stable coupling without proportionally increasing device complexity.
Solution Approach 2:
The rotation restriction member serves multiple purposes simultaneously: it acts as a coupling element between the hub axle and frame, provides rotation restriction through engagement portions, and guides cables through its cable guide structure. This multi-functionality resolves the contradiction by achieving stable coupling while minimizing additional complexity.
2Stability of the object's composition
If the hub axle is rigidly coupled to the frame, then the position stability of electronic components is improved, but the cable routing flexibility deteriorates
Solution Approach 1:
The cable guide structure acts as an intermediary element within the rotation restriction member. It provides a dedicated pathway for cables, mediating between the rigid coupling structure and the cable routing requirements. This allows the electronic components to be firmly positioned while cables can be properly routed without interference.
3Stability of the object's composition
If the rotation restriction member is permanently attached to the hub axle, then the coupling stability is improved, but the ease of repair and replacement deteriorates
Solution Approach 1:
The rotation restriction member is designed as a detachable component that can be separated from the hub axle. This segmentation allows the rotation restriction member to be removed and replaced independently, facilitating maintenance and repair while maintaining stable coupling during normal operation.
Data Source
AI summary
A bicycle hub unit configured to be stably coupled to a frame of a bicycle includes a hub axle and a rotation restriction member. The hub axle is configured to be coupled to the frame of the bicycle. The rotation restriction member is configured to couple the hub axle to the frame so that rotation relative to the hub axle and the frame is restricted. At least one of the hub axle and the rotation restriction member has a cable guide structure configured to guide a cable, which electrically connects an electric component and an electronic component, in a region including the rotation restriction member in an axial direction parallel to a center longitudinal axis of the hub axle.