Ceiling Fan Motor Housing Assembly for Dust-Sealed Structural Support
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Solution Overview
Problem
Conventional ceiling fan motor housings, with thin plate construction and transverse flanges, lack stability and are prone to deformation, allowing external air and dust ingress, which affects the operation of the blade unit.
Innovation Solution
A motor housing structure comprising an upper and lower housing with integrated lugs and blocking portions that provide vertical and transverse support, using locking members to secure the housings and prevent air and dust ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thin plate construction with transverse flanges is used for motor housing, then manufacturing complexity is reduced, but structural stability and supporting capacity deteriorate
Solution Approach 1:
The motor housing is divided into an upper housing and a lower housing that are fixedly connected together. This segmentation allows each housing to be manufactured separately with simpler processes while the combined structure provides enhanced stability and supporting capacity to resist deformation under blade unit weight.
2Ease of manufacture
If thin plate construction with transverse flanges is used for motor housing, then manufacturing complexity is reduced, but deformation resistance deteriorates
Solution Approach 1:
The housing structure transitions from a single-plane thin plate design to a three-dimensional assembled structure with upper and lower housings connected through locking members. This dimensional change creates a more rigid framework that resists deformation while maintaining ease of manufacture through modular assembly.
3Ease of operation
If open housing structure is used, then ease of assembly is improved, but protection against external air and dust deteriorates
Solution Approach 1:
The housing is segmented into upper and lower parts that can be assembled separately, maintaining ease of assembly. The segmentation also enables the incorporation of blocking portions in the lower housing that close gaps and prevent external air and dust from entering the internal space while preserving the modular assembly advantage.
4Device complexity
If simple flange connection is used, then device complexity is reduced, but vertical supporting capacity deteriorates
Solution Approach 1:
The upper housing is designed with lugs that extend outward and lock into locking holes in the lower housing before final assembly. This preliminary interlocking action provides immediate vertical support and prevents downward movement of the upper housing under the weight of the blade unit, while the overall connection structure remains relatively simple.
Data Source
AI summary
A motor housing structure for a ceiling fan includes an upper housing and a lower housing. An internal space is defined in the upper housing and the lower housing. The upper housing has an upper circumferential wall formed with a plurality of lugs. The lower housing has a holding portion and at least one blocking portion. The holding portion vertically supports the at least one upper circumferential wall of the upper housing and blocks external air and dust from entering the internal space via the upper opening. The at least one blocking portion blocks external air and dust from entering the internal space via notches of the upper circumferential wall. A plurality of locking members are inserted in the lugs of the upper housing and locked to the lower housing, thereby enhancing the stability, supporting capacity and safety of the motor housing structure.