Electric Bicycle Wheel Hub Assembly with Integrated Motor and Storage
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Solution Overview
Problem
Existing electric bicycle wheel assemblies require complex integration of electric power with the sprocket and chain assembly, necessitating disassembly and increasing production costs and discomfort during physical exertion, while also lacking integrated storage and user-friendly control options.
Innovation Solution
A simplified wheel assembly with an alignment arm for orientation, integrated sensors for data collection and control, and various user interface options, including thumb and foot throttle mechanisms, and electronic device control, allowing for efficient power application and storage of personal items within the wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electric power is integrated with the sprocket and chain assembly, then the bicycle can achieve electric assistance, but the structure becomes complex and requires disassembly for maintenance
Solution Approach 1:
The invention separates the electric motor from the traditional sprocket-chain drive system. The motor is integrated into the wheel hub, creating an independent drive unit that eliminates the need for complex integration with the chain assembly. This segmentation allows the electric power system to function independently without complicating the existing bicycle drivetrain.
Solution Approach 2:
The electric motor is extracted from the sprocket-chain assembly and placed in the wheel hub. This extraction removes the complexity of integrating electric power with the chain system while preserving the simplicity of the traditional bicycle drivetrain for non-electric operation or maintenance scenarios.
2Adaptability or versatility
If traditional electric bicycle power systems are used, then electric assistance is provided, but production costs increase due to complex integration requirements
Solution Approach 1:
By segmenting the electric drive system into a separate wheel hub module, the invention simplifies manufacturing. Each component (motor, battery, controller, wheel) can be manufactured and tested independently, then assembled together. This modular approach reduces production complexity and cost compared to integrating the motor directly into the sprocket-chain system.
Solution Approach 2:
The wheel hub assembly serves multiple functions: it acts as both the wheel structure and the motor housing, while also providing mounting points for the battery and controller. This multi-functionality reduces the total number of components and assembly steps, thereby lowering production costs.
3Device complexity
If the wheel assembly is simplified, then production costs are reduced and failure points are minimized, but integrated storage and control features may be limited
Solution Approach 1:
The invention employs a nested arrangement where the battery and control electronics are housed within the wheel hub structure. The storage compartment is integrated into the hub assembly, allowing personal items to be stored within the wheel itself. This nesting maintains the external simplicity of the wheel while providing complex internal functionality.
Solution Approach 2:
The wheel hub is designed as a multi-functional platform that simultaneously houses the motor, battery, controller, and storage compartment. This universal design allows the wheel to provide propulsion, power storage, electronic control, and item storage without increasing external complexity or adding separate systems.
4Ease of operation
If multiple control interfaces are added, then user comfort and versatility are improved, but device complexity increases
Solution Approach 1:
The controller acts as an intermediary that receives signals from multiple input sources (thumb throttle, twist throttle, foot throttle, electronic devices) and processes them into unified motor control commands. This intermediary approach allows multiple user interfaces to coexist without requiring complex integration logic in each individual interface, as the controller centralizes the decision-making process.
Data Source
AI summary
Powered wheel assemblies and methods of manufacturing and operating such assemblies are provided.