Detachable Fan Blade Assembly for Compact Shipping and Stable Mounting
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Solution Overview
Problem
Existing fan products face challenges with large size leading to high logistics costs, increased damage risk, complex assembly, vibration, and noise during high-speed operation due to integrated blade designs, and inefficient use of space in storage and transportation.
Innovation Solution
A detachable fan design with axially stacked fan blade assemblies, a blocking member, and a retaining cap, utilizing a gradient sleeve design and multiple fixation mechanisms to ensure stable connection and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional split-type fan blades with bolted connections are used, then transportation and storage challenges are alleviated, but assembly complexity increases and connection stability deteriorates
Solution Approach 1:
The fan blade is divided into multiple detachable assemblies that can be separated for transportation and storage, then reassembled for use. Each assembly includes blade portions and sleeve portions that fit together with precise positioning mechanisms, reducing transportation volume while maintaining simple assembly through features like blocking members and retaining caps.
Solution Approach 2:
The sleeve portions are designed to be stacked axially along the main shaft, with each sleeve containing positioning features that nest together. The retaining cap encompasses multiple sleeve portions, creating a nested structure that simplifies assembly while enabling compact storage and transportation of individual blade assemblies.
2Volume of moving object
If traditional split-type fan blades are used, then transportation space is reduced, but connection stability and operational reliability worsen due to bolted connections
Solution Approach 1:
The fan blade is segmented into detachable assemblies with integrated positioning features. Each assembly includes blade portions circumferentially assembled to enclose a complete circular fan, with sleeve portions stacked axially. The segmentation includes blocking members on the main shaft and retaining caps that provide reliable connections without requiring multiple bolts, thereby maintaining connection stability while reducing storage volume.
Solution Approach 2:
The retaining cap acts as an intermediary component that connects multiple sleeve portions to the main shaft assembly. This single intermediary piece provides reliable fixation for all blade assemblies simultaneously, improving connection stability while simplifying the overall assembly structure compared to traditional bolted connections.
3Ease of manufacture
If integrated fan blade design is used, then manufacturing is simplified, but transportation and storage efficiency deteriorates due to large size
Solution Approach 1:
The integrated fan blade is divided into multiple detachable assemblies that can be manufactured separately and then assembled. Each assembly includes blade portions and sleeve portions that can be produced using standard manufacturing techniques, maintaining manufacturing simplicity while enabling compact storage and transportation of individual assemblies rather than requiring storage of complete large-sized fan blades.
Data Source
AI summary
A detachable fan is provided. The fan includes a motor provided with a main shaft extending axially, fan blade assemblies including blade portions circumferentially assembled to enclose a complete circular fan and sleeve portions, and a retaining cap fixed to a top end of the main shaft and in contact with top end surfaces of the sleeve portions to restrict upward movement of the fan blade assemblies along the main shaft. A blocking member is provided on a side wall of the main shaft. The sleeve portions are sequentially stacked along an axial direction of the main shaft, and a lowermost sleeve portion abuts against the blocking member. The present application reduces packaging volume and transportation costs by dividing a conventional integrated blade set into multiple individually detachable fan blade assemblies, which can be separately packaged and stacked, and is particularly well-suited for the logistics and warehousing of large-sized fans.