Ceiling Fan Blade Mounting Disc With Stepped Tool-Free Locking
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Solution Overview
Problem
The installation of fan blades in existing ceiling fans is complicated, requiring manual judgment and auxiliary tools due to the lack of predetermined blade positions, making the process cumbersome and difficult to operate.
Innovation Solution
A ceiling fan design featuring a rotating table with annular mounting plate and positioning steps of increasing heights, equipped with locking slots, allows fan blades to be pre-fixed by rotating their locking tabs into corresponding slots without tools, simplifying installation and ensuring stable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fan blades are fixed onto a blade bracket using three or four screws, then the connection is stable, but the installation procedure becomes complicated and requires auxiliary tools
Solution Approach 1:
The blade bracket is segmented into multiple positioning steps with different heights, each providing a locking slot. This segmentation allows the fan blade to be installed at different angular positions without requiring complex alignment procedures, maintaining connection stability while simplifying installation.
Solution Approach 2:
The locking tab on the fan blade automatically engages with the locking slot on the positioning step when the fan blade is rotated into position. This self-locking mechanism eliminates the need for auxiliary tools and complex manual alignment procedures, making the installation process simple while ensuring stable connection.
2Device complexity
If no predetermined blade position is provided, then the rotating table is simple in structure, but manual judgment and auxiliary tools are required to ensure angular position
Solution Approach 1:
The positioning steps are pre-formed on the rotating table during manufacturing, creating predetermined blade positions in advance. This preliminary action eliminates the need for complex alignment procedures during installation, as the locking tab simply needs to engage with the pre-positioned locking slots.
Solution Approach 2:
Instead of providing predetermined positions in the horizontal plane only, the invention adds a vertical dimension by creating positioning steps at different heights. This dimensional change allows the locking tab to engage with locking slots at specific heights, providing angular position determination without complicating the horizontal structure of the rotating table.
3Ease of operation
If fan blades are installed without predetermined positions, then the installation process is simple, but the angular position of blades cannot be ensured
Solution Approach 1:
The positioning steps are designed with asymmetric heights, where each positioning step has a distinct height from the others. This asymmetry ensures that when the locking tab engages with a locking slot, the fan blade is automatically positioned at a specific angular orientation, ensuring measurement precision while maintaining simple installation procedures.
Solution Approach 2:
The invention replaces the need for manual angular position judgment and auxiliary alignment tools with a mechanical engagement system. The locking tab and locking slot form a mechanical constraint that automatically ensures precise angular positioning when engaged, eliminating the need for manual measurement and alignment procedures.
Data Source
AI summary
A ceiling fan with convenient blade installation includes a ceiling fan base, a connecting rod, a mounting disc and fan blades, wherein a drive member is arranged at a bottom of the connecting rod. The drive member drives a rotating table including a cylindrical mounting disc and a connecting portion configured to be connected to an output end of the ceiling fan. The mounting disc is arranged at a bottom of and coaxial with the connecting portion. The mounting disc has a width greater than that of the connecting portion to form a mounting plate being annular and provided along a circumferential direction with a plurality of positioning steps having progressively increasing heights. The plurality of fan blades are sleeved onto the connecting portion in a stacked state and are rotatable about an axis of the rotating table.