Centering Ring Structure With Movement Limiter for Breakage Resistance
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Solution Overview
Problem
Centring rings for two-wheeled and three-wheeled vehicles, particularly those integrated in steering head bearings, face structural weaknesses due to thin-walled areas, which can break under operational forces and assembly stresses, and lack tolerance compensation without increasing wall thickness, which would enlarge the head tube diameter.
Innovation Solution
A centring ring design featuring at least two thick-walled segments with a variable gap and a movement limiter that allows side surfaces to drift apart or together, providing stability and tolerance compensation while preventing destructive forces from affecting thin-walled areas, effectively transforming the ring into a closed disc shape for enhanced strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the centring ring has a gap (slot) for tolerance compensation, then assembly tolerance is compensated, but the structural strength and stability are reduced
Solution Approach 1:
The centring ring is divided into multiple segments (first thick-walled segment, thin-walled segment, second thick-walled segment) that can move relative to each other. The gap between thick-walled segments provides tolerance compensation while the segmented structure maintains overall strength by allowing controlled movement without compromising the entire ring's integrity.
Solution Approach 2:
Different segments of the centring ring have different wall thicknesses optimized for their specific functions: thick-walled segments provide structural strength and stability, while thin-walled segments reduce weight and material usage. This local differentiation allows the ring to achieve both strength and tolerance compensation capabilities.
2Strength
If the wall thickness is increased to prevent breakage of thin-walled areas, then the strength is improved, but the head tube diameter increases
Solution Approach 1:
Instead of uniformly increasing wall thickness, the ring is segmented into thick-walled and thin-walled sections. The thick-walled segments are strategically positioned to provide strength where needed (resisting breakage during transport and assembly) while keeping the overall diameter unchanged. The thin-walled segments maintain the original diameter requirements.
Solution Approach 2:
The centring ring features localized thick-walled segments only in areas requiring high strength (opposite each other to form a stable structure), while other areas maintain thinner walls. This selective thickening prevents breakage without increasing the overall head tube diameter, as the thickness increase is localized rather than global.
3Stability of the object's composition
If the centring ring is made as a connected disc shape, then the stability is improved, but the tolerance compensation capability is lost
Solution Approach 1:
The centring ring is designed as a segmented structure with gaps between thick-walled segments, maintaining the ability to compensate for assembly tolerances. Despite the gaps, the ring achieves stability through the strategic positioning and dimensional relationships of its segments, particularly the thick-walled segments that provide structural rigidity while allowing controlled movement for tolerance accommodation.
Solution Approach 2:
The centring ring transitions from a static connected disc to a dynamic segmented structure where gaps allow movement and adaptation. The segments can move relative to each other to accommodate tolerance variations, yet the overall structure maintains stability through the geometric relationships and constraints of the thick-walled segments, achieving both adaptability and stability simultaneously.
4Ease of operation
If thin-walled areas are created for cable routing, then the ease of operation is improved, but the reliability is reduced
Solution Approach 1:
The centring ring is segmented into thin-walled sections specifically designed for cable routing, separating the cable feed function from the structural support function. The thin-walled segments enable easy cable installation while the thick-walled segments provide the structural strength to prevent breakage, allowing both cable accessibility and structural reliability to coexist.
Solution Approach 2:
The centring ring has localized thin-walled segments only in areas where cable routing is needed, while other areas maintain thick walls for strength. This local differentiation allows cables to be easily routed through specific openings without compromising the overall structural integrity and damage resistance of the entire ring component.
Data Source
AI summary
A centring ring (5) and a method for reducing the risk of breakage of at least one thin-walled area of a centring ring (4) are proposed, the centring ring (5) having at least two thick-walled segments, i.e. at least one first thick-walled segment (15) and one second thick-walled segment (16), said first thick-walled segment (15) having a side surface (23) which faces a side surface (31) of the second thick-walled segment (16), said side surfaces (23, 31) touching each other at least partially or being separated from each other by a gap (37) having a given clearance B (38), and said centring ring (5) including at least one movement limiter (24, 48) which allows the side surfaces (23,31) to merely drift apart under the application of force and/or drift towards each other under the application of force until a certain clearance B (38) is reached.