Ceiling Fan Motor Segmented Rotor Assembly
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Solution Overview
Problem
Large ceiling fans face challenges in assembly efficiency due to deep inner spaces, leading to unstable operation when bearings are not properly installed, and existing solutions are costly and prone to breakage.
Innovation Solution
The motor and ceiling fan design separates the rotating mechanism into independent parts with distinct bearings and materials, ensuring concentricity and stability, allowing for easier assembly and reducing costs by using regular bearings instead of expensive specific-purpose ones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the ceiling fan size is increased to 4 meters or more, then the coverage area is improved, but the inner space of the rotary member becomes deeper making bearing installation difficult
Solution Approach 1:
The rotary member is divided into an upper rotary member and a lower rotary member, with the bearing installed in the lower rotary member. This segmentation allows the bearing to be accessible from the bottom side, solving the installation difficulty caused by the deep inner space in large ceiling fans.
2Productivity
If the bearing is difficult to install properly, then assembly efficiency is reduced, but the operation stability becomes unreliable
Solution Approach 1:
The bearing is pre-installed in the lower rotary member before final assembly. This preliminary action ensures the bearing is properly positioned and secured, preventing slanting or improper installation that would cause operational instability, while also streamlining the final assembly process.
3Reliability
If expensive specific-purpose bearings are used, then reliability is improved, but cost increases
Solution Approach 1:
The patent employs regular bearings instead of expensive specific-purpose bearings. By positioning the bearing in the lower rotary member and ensuring proper installation, the design achieves reliable operation using cost-effective standard bearing components.
Data Source
AI summary
A motor including a support unit, a first rotating part, a second rotating part, a rotor and a stator is disclosed. The support unit includes an axle and a bearing coupled with the axle. The first rotating part is fit around the axle and is coupled with the bearing. The second rotating part is coupled with the first rotating part. The rotor is coupled with the second rotating part. The stator is connected to the support unit.