UAV Propeller Mounting Structure with Latching Groove
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face frequent propeller damage and replacement issues due to collisions, requiring cumbersome disassembly and reassembly processes, which complicates maintenance and increases operational risks.
Innovation Solution
A propeller mounting structure featuring a construction with a shaft inserting hole, latching protrusion, and latching groove, allowing for simple and tool-free propeller replacement by rotating the propeller to engage the latching groove, ensuring secure fixation without separate fastening tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screw fastening is used to attach the propeller, then the propeller can be securely fixed to the motor, but the replacement process becomes complex and time-consuming requiring disassembly tools
Solution Approach 1:
The fastening mechanism is segmented into a latching protrusion on the motor shaft and a corresponding latching groove on the propeller hub. This segmentation allows the propeller to be quickly attached and detached without requiring complete disassembly of a screw fastening system, thereby improving replacement convenience while maintaining secure fixation.
Solution Approach 2:
The latching protrusion and groove design enables the propeller to self-fasten through a simple rotational motion that engages the latching features. This self-service mechanism eliminates the need for external fastening tools and complex assembly procedures, allowing operators to quickly replace propellers without specialized equipment while ensuring reliable attachment.
2Productivity
If frequent propeller replacement is needed due to collision damage, then operational continuity can be maintained, but the cumulative time and complexity of repeated disassembly and reassembly increases
Solution Approach 1:
The latching groove is pre-formed on the propeller hub during manufacturing, and the latching protrusion is pre-formed on the motor shaft. This preliminary preparation of the fastening features eliminates the need for on-site assembly operations during propeller replacement, allowing damaged propellers to be quickly swapped with new ones simply by engaging the pre-formed latching structures, thereby reducing cumulative maintenance time while maintaining operational continuity.
3Strength
If traditional fastening methods are used, then the propeller can be securely attached, but the process requires separate fastening tools and multiple steps increasing operational complexity
Solution Approach 1:
The fastening function is merged into the propeller hub and motor shaft structures themselves through the latching protrusion and groove design. Instead of requiring separate fastening components like screws, nuts, or clips, the attachment strength is achieved by integrating the fastening mechanism directly into the structural elements, thereby reducing device complexity while maintaining sufficient attachment strength for secure propeller fixation.
Data Source
AI summary
An unmanned aerial vehicle includes a housing, a wireless communication circuit, a navigation circuit, a plurality of propulsion systems, and a propeller. At least one of the plurality of propulsion systems includes a motor, and a construction disposed to the motor. The construction includes a first side, a second side facing the motor in a direction opposite to the first side, a shaft inserting hole disposed to the second side, and a latching protrusion and a latching groove that are extended sequentially inside the shaft inserting hole. The propeller is fastened to the construction, and includes a hub coupled to the first side of the construction, a fixing shaft that protrudes in a direction of the construction that is inserted to the shaft inserting hole of the construction, and at least one protrusion on an outer circumferential surface of the fixing shaft.