Rear Hub Locking Mechanism for Fast Bicycle Wheel Changes
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Solution Overview
Problem
Current bicycle wheel hub systems require complex and time-consuming processes for changing wheels, involving careful disengagement of drive and brake components, which increases wheel change time and can lead to component damage and incompatibility issues between different brands.
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 wheels 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 lining up of components
Solution Approach 1:
The system divides the wheel assembly into two independent parts: the wheel hub with locking mechanism that attaches to the frame, and the drive/brake components that remain attached to the frame. This segmentation allows the wheel hub to be quickly exchanged without moving the drive and brake components, resolving the contradiction between secure attachment and quick wheel changes.
Solution Approach 2:
The locking mechanism is extracted from the traditional hub assembly and implemented as a separate locking bar system that independently secures the wheel hub to the frame. This extraction allows the wheel hub to be attached or detached without affecting the drive and brake components, enabling rapid wheel changes while maintaining secure attachment.
2Adaptability or versatility
If drive and brake components are attached to the hub for traditional wheel attachment, then the wheel assembly is complete and functional, but spare wheels cannot be shared between different brands and precision setups are compromised
Solution Approach 1:
By segmenting the wheel system into a universal hub interface and brand-specific drive/brake components, the patent enables the hub to be universally interchangeable while keeping precision components fixed to the frame. This allows wheels from different brands to be shared while maintaining precision setups, as the drive and brake components never leave the frame.
Solution Approach 2:
The locking mechanism creates a universal interface between wheel hubs and frames that is independent of brand-specific drive and brake components. This universality allows any wheel hub to be attached to any compatible frame without compromising the precision setup of the drive and brake components, enhancing adaptability while maintaining reliability.
3Reliability
If careful movements are made to disengage and line up drive components during wheel removal and insertion, then component damage is prevented, but the wheel change process becomes lengthy and complex
Solution Approach 1:
The locking mechanism extracts the attachment function from the hub-flange interface and implements it through a dedicated locking bar system. This allows the wheel hub to be quickly secured or released by simply moving the locking bar, eliminating the need for careful manual alignment while still protecting components from damage through controlled engagement.
Solution Approach 2:
The locking mechanism is designed to self-align and self-secure during attachment. The locking bar automatically engages with the locking surface when the wheel hub is inserted, and the spring-loaded design ensures proper engagement without requiring precise manual alignment, thus protecting components while enabling rapid wheel changes.
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.