Bicycle Headset Compression Ring Assembly for Stable Bearing Fixation
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Solution Overview
Problem
Conventional bicycle compression rings have a small contact surface, leading to instability and noise when additional elements causing play in the headset are introduced, such as fork angle adjustment systems.
Innovation Solution
A compression ring assembly comprising two interlocking rings, an inner ring and an outer ring, with complementary conical surfaces, increasing the contact surface area and providing a stable fixation of the upper bearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional single compression ring is used, then the device complexity is low, but the contact surface area with the bearing is small leading to instability and noise
Solution Approach 1:
The compression ring is divided into two separate rings: an inner compression ring and an outer compression ring. The inner ring contacts the bearing inner race while the outer ring contacts the fork tube outer surface. This segmentation increases the total contact surface area with the bearing while maintaining manageable device complexity through modular design.
Solution Approach 2:
The inner compression ring is positioned inside the outer compression ring, with the inner ring nested within the outer ring structure. This nesting arrangement allows both rings to work together to increase contact surface area while maintaining a compact overall structure that does not significantly increase device complexity.
2Adaptability or versatility
If additional elements such as fork angle adjustment systems are added, then the adaptability increases, but the stability decreases due to increased play and noise
Solution Approach 1:
The double compression ring assembly is pre-configured with specific conical angles and contact surfaces designed to maintain stable fixation of the bearing even when additional elements like fork angle adjustment systems are present. The preliminary design of the contact geometry ensures stability is maintained despite increased adaptability requirements.
Solution Approach 2:
The invention changes the geometric parameters of the compression rings, specifically using conical surfaces with optimized angles for the inner and outer rings. This parameter optimization ensures that the contact surfaces maintain stable fixation under varying conditions, including when additional adaptability elements are introduced to the system.
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
The increased contact surface area between the compression ring assembly and the bearing enhances the stability and rigidity of the connection, reducing noise and play, and providing a safer and more reliable solution.
Implementation Method 1
the inner ring carries out a wedge-like function, compressing the outer ring against the bearing
Implementation Method 2
the compression ring (AC) slides with respect to the upper ring (RS) along the conical wall (PC), thereby slightly reducing its diameter
Data Source
AI summary
The invention discloses a bicycle compression ring assembly (1) configured for connecting a bearing (RS) of the direction of a bicycle between the fork tube (H) and the frame (C). The assembly (1) comprises: an open outer ring (2) comprising an inner wall (21) with at least a conical length; and an open inner ring (3) comprising an outer wall (31) with at least a conical length. The conical length of the outer wall (31) of the inner ring (3) and the conical length of the inner wall (21) of the outer ring (2) have essentially the same conicity such that, when the assembly is mounted (1), the inner ring (3) fits 10 into the outer ring (2) in a wedge-like manner, thereby compressing it against the bearing (RS).