Steering Bearing Assembly Isolating Compression Ring
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Solution Overview
Problem
Steering bearing systems for bicycles, particularly those using carbon fiber steerer tubes, face challenges in securely gripping the steerer tube without applying excessive compressive forces that can lead to damage, especially under increased loads from modern riding styles and equipment trends.
Innovation Solution
A steering bearing assembly design that isolates the compression ring from the axial force transmission path, using a cap and bearing element with an annular surface to apply a radial compressive force to the steerer tube, allowing secure gripping without excessive radial compression, and a method of installing the assembly that ensures the compression ring is not part of the axial force transmission path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compression ring is used to grip the steerer tube, then the steering bearing system can securely hold the steerer tube, but excessive compressive forces may damage carbon fiber composite steerer tubes
Solution Approach 1:
The invention divides the force transmission function into two separate paths: one for axial loads (through the cap and bearing element) and one for radial gripping forces (through the compression ring). This segmentation allows each component to perform its specific function without subjecting the steerer tube to excessive combined forces, thereby securing the steerer tube while preventing damage.
Solution Approach 2:
The cap and bearing element assembly acts as an intermediary between the axial load path and the compression ring. By isolating the compression ring from the axial force transmission path, the intermediary structure allows the compression ring to apply only the necessary radial gripping force without transmitting excessive axial compressive forces to the steerer tube, thus preventing damage while maintaining secure grip.
2Reliability
If axial compressive forces are transmitted through the compression ring, then the bearing assembly can be secured, but the steerer tube may experience damaging compression forces
Solution Approach 1:
The invention segments the force transmission paths so that axial compressive forces are transmitted through the cap and bearing element, while the compression ring is isolated from this axial force path. This segmentation ensures that the bearing assembly is properly secured through axial loading without subjecting the steerer tube to damaging compression forces from the compression ring.
Solution Approach 2:
The invention extracts the compression ring from the axial force transmission path, removing it as a load-bearing component in the axial direction. This extraction allows the compression ring to perform its gripping function independently without contributing to axial compressive forces on the steerer tube, thereby protecting steerer tube integrity while maintaining bearing assembly security.
3Device complexity
If the compression ring is part of the axial force transmission path, then the structure can be simplified, but the steerer tube may fail under aggressive riding conditions
Solution Approach 1:
The invention segments the force transmission system into distinct axial and radial load paths. The cap and bearing element handle axial forces, while the compression ring handles radial gripping forces independently. This segmentation increases structural complexity slightly but dramatically improves steerer tube durability by preventing excessive compressive forces during aggressive riding conditions.
Solution Approach 2:
The cap and bearing element assembly serves as an intermediary structure that isolates the compression ring from axial force transmission. This intermediary arrangement protects the steerer tube from damaging forces during aggressive riding while maintaining reliable bearing assembly security, prioritizing durability over structural simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively secures the steerer tube against high loads without damaging it, maintaining steering control and preventing progressive delamination or failure, even under aggressive riding conditions.
Implementation Method 1
A steering bearing assembly design that isolates the compression ring from the axial force transmission path, using a cap and bearing element with an annular surface to apply a radial compressive force to the steerer tube
Implementation Method 2
The cap and bearing element define an axial force transmission path through the respective first and second surfaces thereof
Data Source
AI summary
A steering bearing assembly includes a cap and a bearing element that define an axial force transmission path therethrough. A compression ring is moveably coupled to the cap and is disposed radially inwardly of the bearing assembly outside of the axial force transmission path. The compression ring includes an inner annular surface adapted to transmit a radial compressive force from the cap to a steerer element. A steering assembly, and method for assembling the steering assembly, also are provided.