Bicycle Hub Locking Mechanism for Fast Wheel Changes
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Solution Overview
Problem
Current bicycle wheel hub systems require complex and time-consuming processes for wheel changes, involving careful disengagement of drive and brake components, which increases wheel change time and can lead to component damage and compatibility issues.
Innovation Solution
A bicycle hub system with rear and front hub assemblies featuring locking mechanisms with matching undulating splined coupling faces, allowing for easy coupling and decoupling of wheel hubs from the frame without affecting the drive and brake components, thus simplifying the wheel change process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional attachment systems are used where drive and brake components are attached to the hub, then the wheel can be securely attached to the frame, but the wheel change process becomes time-consuming and complex requiring careful disengagement and alignment of components
Solution Approach 1:
The system separates the wheel hub assembly from the drive and brake components. The hub assembly becomes an independent interchangeable unit that can be quickly swapped without affecting the permanently mounted drive and brake components on the frame. This segmentation allows the wheel to be changed in isolation, dramatically reducing wheel change time while maintaining secure attachment through the locking mechanism.
Solution Approach 2:
The drive and brake components are extracted from the wheel hub assembly and permanently mounted to the frame. Only the hub assembly itself becomes the removable component. This extraction eliminates the need to carefully disengage and realign drive and brake components during wheel changes, as they remain fixed on the frame while the hub assembly is quickly swapped using the locking mechanism.
2Reliability
If drive and brake components are attached to the hub for secure mounting, then proper function is ensured, but careful lining up and placement must be made during wheel insertion to prevent damage
Solution Approach 1:
By segmenting the system into a removable hub assembly and fixed drive/brake components, the insertion process is simplified. The hub assembly has dedicated locking mechanism interfaces that guide and secure it to the frame without requiring precise alignment of drive and brake components. The drive and brake components remain permanently mounted on the frame, eliminating the need for careful lining up during each wheel insertion.
Solution Approach 2:
The locking mechanism acts as an intermediary that facilitates the connection between the hub assembly and the frame. It provides a standardized interface with coupling faces that ensure proper positioning and secure attachment without requiring manual alignment of other components. The locking mechanism absorbs the complexity of alignment, making the insertion process easier and less prone to damage.
3Reliability
If precision brake and drive setups are maintained on each wheel, then optimal performance is achieved, but wear and tear differences compromise precision when wheels are changed
Solution Approach 1:
By separating the precision-critical drive and brake components from the wheel hub assembly and permanently mounting them to the frame, the system ensures that these components maintain their precision setup regardless of which hub assembly is installed. The hub assembly becomes a non-critical interchangeable component that does not affect the precision of the drive and brake systems. This segmentation eliminates the problem of precision compromise during wheel changes, as the precision components remain fixed and undisturbed on the frame.
Data Source
AI summary
A bicycle hub system, method and device including rear and front hub assemblies. Both the rear and front hub assemblies include locking mechanisms with matching undulating splined coupling faces that correspond to complementary undulating splined coupling faces of a wheel hub.