Adjustable Axle Retaining Sleeve for Fork Geometry Alignment
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Solution Overview
Problem
Existing axle retaining structures in vehicles face challenges in maintaining proper geometry and alignment between the fork and wheel hub, leading to deformation and increased friction when accommodating different wheel hub sizes, which affects performance and longevity.
Innovation Solution
An adjustable axle retaining structure that uses a sleeve or geometrically shaped component to establish and maintain acceptable geometry between the wheel and fork tubes, allowing for initial width compensation without requiring additional adjustments during wheel removal or reinstallation, and utilizing a tool-free or tool-style quick release configuration to prevent fork bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing axle retaining structures are used to accommodate different wheel hub sizes, then the structure must be adjusted, but this causes fork deformation and increased friction
Solution Approach 1:
The axle retaining structure is segmented into a fixed fork portion and an adjustable sleeve portion. The sleeve can be independently positioned and secured at different locations along the fork tube, allowing adaptation to different wheel hub sizes without deforming the fork itself. This segmentation isolates the adjustment mechanism from the critical fork geometry.
Solution Approach 2:
The sleeve acts as an intermediary component between the fork and the wheel hub. It provides the necessary adjustment capability while the fork maintains its original geometry. The sleeve mediates the connection, allowing different hub sizes to be accommodated without transmitting deformation forces to the fork structure.
2Adaptability or versatility
If existing axle retaining structures are adjusted for different wheel hub sizes, then adaptability is improved, but friction and wear increase
Solution Approach 1:
The sleeve is pre-positioned and secured at the appropriate location before the wheel hub is installed. This preliminary action ensures that the alignment is correct from the start, preventing misalignment-induced friction and wear during operation. The adjustment is made once during installation rather than requiring frequent adjustments.
Solution Approach 2:
The sleeve provides dynamic adjustability during the installation phase, allowing it to be positioned at different locations along the fork tube to accommodate different hub sizes. Once positioned, it becomes fixed, providing a stable, low-friction connection for normal operation.
3Adaptability or versatility
If frequent adjustments are made to the axle retaining structure, then adaptability is maintained, but time and operational efficiency are reduced
Solution Approach 1:
The sleeve is adjusted and secured at the correct position during the initial wheel hub installation. This preliminary adjustment ensures proper fit for the specific hub size being installed, eliminating the need for frequent subsequent adjustments. The system is optimized for the installed configuration rather than requiring continuous adaptation.
Solution Approach 2:
The adjustable sleeve design allows the system to be optimized for each specific wheel hub installation. Once adjusted for a particular hub size, the configuration is maintained and effectively 'discarded' as a adjustment need, reducing the frequency of future adjustments and saving time.
Data Source
AI summary
An adjustable axle retaining structure is disclosed. The structure includes an axle receiving feature on a first leg of a fork assembly and a retaining sleeve within a clamping member on a second leg of the fork assembly. An axle is inserted through the clamping member, the wheel hub and coupled with the axle receiving feature. A component of the axle is tightened thereby moving the retaining sleeve partially out of the clamping member and toward the wheel hub until the wheel hub is in contact with both the retaining sleeve and the axle receiving feature, wherein the moving of the retaining sleeve allows the axle to radially couple the wheel hub with the fork assembly without modifying a preestablished geometry of the fork assembly.