Bicycle Hub Kit Interchangeable End Nuts Thru Axle Quick Release
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Solution Overview
Problem
Conventional bicycle hub assemblies with large-diameter axles are incompatible with standard quick release mechanisms, leading to increased weight when using adapters to accommodate different spindles.
Innovation Solution
A bicycle hub kit featuring a hub axle, hub shell, bearing units, end nuts, and a retaining member that allows interchangeable spindle accommodation without adding weight, utilizing a design with interchangeable first and second end nuts and a retaining member to support different spindle sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hub axle adapter is inserted into the space between the large diameter hub axle and the skewer shaft of the conventional quick release mechanism, then compatibility between large-diameter hub axles and quick release mechanisms is achieved, but the weight of the hub assembly increases
Solution Approach 1:
The hub axle is designed with a universal interface that can accommodate both large-diameter thru axles and small-diameter quick release skewers directly, eliminating the need for separate adapters. The hub shell contains a receptacle with a recessed portion that receives different spindle types, allowing one hub assembly to serve multiple functions without additional components.
Solution Approach 2:
The adapter function is extracted from the system by integrating it directly into the hub shell structure. Instead of using a separate hub axle adapter component, the hub shell itself incorporates the adaptive interface features, removing the need for additional parts and reducing overall weight.
2Strength
If a large diameter hub axle is used to increase the rigidity of the bicycle hub assembly, then rigidity is improved, but compatibility with conventional quick release mechanisms is lost
Solution Approach 1:
The hub assembly employs different local structures within the same component. The hub shell contains a receptacle with a recessed portion that provides a smaller diameter interface for quick release skewers, while the overall hub axle maintains its large diameter for rigidity. This local variation in geometry allows both rigidity and compatibility to coexist.
Solution Approach 2:
The hub shell is segmented into distinct functional zones: the main hub body with large-diameter axle for rigidity, and the receptacle portion with adapted geometry for receiving different spindle types. This segmentation allows each zone to optimize for its specific function while working together as a unified assembly.
Data Source
AI summary
A bicycle hub kit includes a hub axle, a hub shell, a bearing unit, first and second end nuts, and a retaining member. The bearing unit has a first ring, a second ring, and a plurality of rollers. The first and second end nuts are interchangeably coupled to an axle end of the hub axle. The retaining member retains an axial position of the first ring of the bearing unit with respect to the hub axle. The retaining member is disposed between the first ring of the bearing unit and one of the first and second end nuts. The first and second end nuts have first and second through holes, respectively. The second through hole of the second end nut has an inner diameter that is smaller than an inner diameter of the first through hole of the first end nut.