Electric Wheel Hub Structure With Dual-Sided Axle Cooling
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Solution Overview
Problem
Existing electric hub motors are limited by single-sided connection of the wheel hub shaft axle, leading to instability and potential overheating issues due to inadequate heat dissipation.
Innovation Solution
A motorized wheel hub design with a wheel hub shaft axle running through both sides of the active and driven wheel housings, incorporating a heat dissipation mechanism via exhaust and intake holes, and a transmission assembly with dust-proofing, ensuring stability and efficient heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wheel hub shaft axle is connected only on one side, then the structure is simpler, but the stability and balance are insufficient
Solution Approach 1:
The shaft axle connection is segmented into two separate connection points on opposite sides of the hub, rather than a single connection. This segmentation provides multiple support points that enhance stability while maintaining modular simplicity in each individual connection point.
Solution Approach 2:
The dual-sided connection structure merges the functionality of multiple support points into a unified shaft axle system, creating a balanced and stable hub assembly that distributes mechanical loads more effectively across the entire structure.
2Adaptability or versatility
If the motor is built into the hub, then the integration is improved, but the heat dissipation becomes insufficient leading to overheating
Solution Approach 1:
The heat dissipation system utilizes the radial dimension by introducing intake holes at the inner radius and exhaust holes at the outer radius of the hub housing. This dimensional approach creates effective airflow paths that traverse the housing thickness, enabling efficient heat removal while preserving the compact integrated motor-hub design.
Solution Approach 2:
Air acts as an intermediary cooling medium that flows through the hub housing, absorbing heat from the integrated motor and transmission components. The intake and exhaust holes facilitate this intermediary cooling process, allowing the compact design to dissipate heat effectively without additional active cooling mechanisms.
3Stability of the object's composition
If the shaft axle runs through both sides of the hub, then the stability is improved, but the device complexity increases
Solution Approach 1:
The shaft axle serves multiple functions simultaneously: it provides structural support, enables rotation, and creates pathways for heat dissipation airflow. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving enhanced stability.
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 design enhances stability and balance by allowing dual-sided connection of the wheel hub shaft axle, while the heat dissipation mechanism prevents overheating, maintaining motor performance and safety.
Implementation Method 1
a heat dissipation mechanism for dissipating heat from the accommodating containment cavity
Data Source
AI summary
The invention relates to an electric wheel hub comprising a driving wheel shell, a driven wheel shell connected to the driving wheel shell, a hub axle penetrating the driving wheel shell and the driven wheel shell, a housing space formed by the inner walls of the driving wheel shell and the driven wheel shell, a drive component arranged in the housing space, and a heat dissipation mechanism for dissipating heat from the housing space, the drive component comprising a drive motor arranged on one side of the hub axle and a transmission component arranged in the housing space, the drive motor driving the driving wheel shell to rotate about the hub axle via the transmission component. The present invention realizes the electric rotation of the wheel hub by driving the wheel hub on the wheel hub axle through the transmission component by the internal driving motor.