Modular Electric Wheel Hub Assembly for Fast Motor Replacement
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Solution Overview
Problem
Existing electric wheel hub motors have complex structures with many interconnected parts, making maintenance and replacement difficult and time-consuming, requiring specialized knowledge and increasing repair costs.
Innovation Solution
The electric wheel hub design features a shell with a motor assembly including a stator, rotor, and shaft, where the shaft is detachably connected to the stator, allowing for quick detachment and installation without dismantling motor assembly parts, and a battery unit is integrated within the shell for easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the wheel hub motor uses a compact hub motor design, then the appearance is concise and the price is low, but the structure becomes complicated with many interconnected parts making maintenance difficult
Solution Approach 1:
The wheel hub motor is divided into modular components: a motor assembly (containing stator, rotor, and shaft) that can be separated from the hub assembly. The shaft is detachably connected to the stator through bearings, allowing the motor assembly to be removed as a unit without dismantling internal parts. This segmentation enables easy maintenance while preserving the compact hub motor design.
2Reliability
If the wheel hub motor has many interconnected parts, then the structure is complete and functional, but it is time-consuming to dismantle and replace parts
Solution Approach 1:
The motor assembly is segmented as a complete removable unit from the hub assembly. All internal connections (shaft to stator via bearings, rotor to stator) are maintained within the motor assembly, allowing the entire motor assembly to be replaced in one operation without time-consuming dismantling of internal parts.
Solution Approach 2:
The motor assembly is extracted as a complete functional unit from the hub assembly. The detachable connection between the shaft and stator enables the motor assembly to be taken out entirely, replacing multiple interconnected parts as a single unit, thus reducing dismantling time while maintaining structural completeness.
3Reliability
If specialized repairers with specific model knowledge are required, then the repair quality is high, but the convenience of repair is reduced
Solution Approach 1:
The motor assembly is designed as a standardized modular unit with detachable connections. This segmentation creates a universal replacement unit that can be installed without specialized knowledge of internal configurations, improving repair convenience while maintaining repair quality through proper modular design.
Solution Approach 2:
The motor assembly is designed as a universal replaceable unit that can serve multiple functions and be installed by general technicians. The standardized detachable connection between shaft and stator creates a universal interface, making the repair process accessible to non-specialists while maintaining high repair quality through proper design.
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
This design simplifies maintenance and replacement processes, reducing the need for specialized knowledge and lowering repair costs, while ensuring stability and ease of component replacement.
Implementation Method 1
a motor assembly, including a stator, a rotor and a shaft, the stator and the rotor being received in the shell and relatively rotatable
Implementation Method 2
a battery unit, received in the shell, electrically connected with the motor assembly
Data Source
Figure 1
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AI summary
An electric wheel hub is provided, including: a shell (1); a motor assembly (2), including a stator (21), a rotor (27) and a shaft (28), the stator (21) and the rotor (27) being received in the shell (1) and relatively rotatable, the rotor (27) being connected and rotatable with the shell (1), the shaft (28) defining an axial direction (41) and a circumferential direction (42), the shaft (28) being movable in the axial direction (41) and disposed through the stator (21), the shaft (28) and the stator (21) being relatively non-rotatable in the circumferential direction (42); and a battery unit (3), received in the shell (1), electrically connected with the motor assembly (2).