Electric Motor Bearing Frame Layout for Compact Stable Assembly
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Solution Overview
Problem
Existing electric motors face challenges in miniaturization due to complex bearing mounting structures, leading to increased production difficulties, reduced efficiency, and instability.
Innovation Solution
A simplified electric motor design featuring a frame assembly with a shell and bearing frame, a stator assembly, and a rotor assembly, where the bearing frame is connected to the shell, and the rotor assembly is inserted into a mounting slot, allowing for stable coaxial arrangement and separate assembly of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a bearing is directly arranged in the shell to miniaturize the product, then the product size is reduced, but the processing difficulty increases and production efficiency decreases
Solution Approach 1:
The patent divides the bearing mounting function into a separate bearing frame component, which is then integrated into the shell. This segmentation allows the bearing to be mounted on the bearing frame rather than directly in the shell, simplifying the processing requirements while maintaining compact dimensions.
2Volume of moving object
If a bearing is directly arranged in the shell to miniaturize the product, then the product size is reduced, but production efficiency decreases
Solution Approach 1:
By creating a separate bearing frame component, the patent enables pre-assembly of the bearing on the bearing frame before final integration into the shell. This modular approach streamlines the production process and improves manufacturing efficiency while maintaining compact product dimensions.
3Volume of moving object
If a bearing is directly arranged in the shell to miniaturize the product, then the product size is reduced, but product stability decreases
Solution Approach 1:
The patent introduces a bearing frame as an intermediate structure that provides a dedicated mounting platform for the bearing. This separate component ensures proper bearing positioning and support, enhancing product stability and reliability while maintaining compact overall dimensions.
4Ease of manufacture
If a bearing mounting structure is arranged at the shell, then the bearing can be mounted, but the product structure becomes complex and assembly becomes more complicated
Solution Approach 1:
The patent combines the bearing frame with the shell assembly, where the bearing frame serves as an integrated component within the shell structure. This merging approach provides bearing mounting capability while avoiding excessive structural complexity through functional integration.
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 simplifies production, enhances stability, improves efficiency, and extends product life by reducing assembly complexity and facilitating heat dissipation and noise reduction.
Implementation Method 1
When in use, alternating current is provided to the coil assembly to generate a periodically changing magnetic field. The magnetic field generated by coil assembly interacts with a magnetic field of the magnet, thereby driving the magnet, the rotating shaft, and the impeller to rotate.
Data Source
AI summary
An electric motor includes a frame assembly, a stator assembly and a rotor assembly. The frame assembly includes a shell and at least one bearing frame. The shell has an inner wall and an outer wall. The inner wall defines a mounting channel. An annular channel is defined between the inner wall and the outer wall. Diffuser vanes are arranged in the annular channel. The bearing frame is connected to an end portion of the shell. The stator assembly is arranged in the mounting channel. The stator assembly includes a stator shell and a coil assembly. The stator assembly defines a mounting hole. The rotor assembly includes a magnet, a bearing, an impeller, and a rotating shaft. The rotor assembly is at least partially inserted into the mounting hole. The bearing is inserted into a mounting slot of the bearing frame.