Rotating Apparatus Position-Limiting Assembly for UAV Propeller Stability
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Solution Overview
Problem
Existing foldable and detachable propeller blade designs for UAVs face issues with insufficient centripetal force leading to incomplete unfolding, low fixation efficiency, and potential damage due to loosening and elastic fatigue, especially during storage and operation.
Innovation Solution
A rotating apparatus with a position-limiting assembly that includes a driving unit, rotating components, and a buckling component, where the position-limiting component is configured to fix the rotating component in an unfolded status and the buckling component prevents the position-limiting component from leaving, allowing for stable fixation and easy folding for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If propeller blades are fixed by screws only, then the structure is simple, but the fixation efficiency is low and the blades easily loosen and damage
Solution Approach 1:
The patent combines the screw fixation mechanism with a position-limiting component that has positioning protrusions fitting into corresponding cavities. This merging of two fixation mechanisms (screw + position-limiting component) provides both structural simplicity and high fixation efficiency, preventing blade loosening and damage while maintaining ease of assembly.
2Ease of operation
If propeller blades are made detachable through rotational removal, then storage convenience is improved, but the blades loosen due to inertial rotation during operation
Solution Approach 1:
The patent employs a dynamic position-limiting component that can rotate relative to the screw axis. The positioning protrusions on this component engage with cavities to prevent blade loosening during operation, while the component itself can rotate to enable easy detachment during storage. This dynamic mechanism resolves the contradiction between operational stability and storage convenience.
3Ease of operation
If a buckling structure is used to coordinate motor and propeller blades, then detachment is enabled, but elastic fatigue and gap enlargement occur after long use
Solution Approach 1:
The patent introduces a position-limiting component as an intermediary between the screw fixation and the propeller blade. This intermediary component with positioning protrusions provides a more durable connection that prevents direct stress concentration on elastic pieces, thereby reducing elastic fatigue and gap enlargement while maintaining detachment capability.
4Volume of moving object
If propeller blades are designed to fold for storage, then storage space is reduced, but incomplete unfolding occurs when centripetal force is insufficient
Solution Approach 1:
The patent employs a position-limiting component with positioning protrusions that preliminarily secure the propeller blade in its unfolded position before full operation. This preliminary positioning ensures complete unfolding even when centripetal force is insufficient, while still allowing the blade to fold compactly for storage when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures the propeller blades are securely fixed in an unfolded position during operation and can be efficiently folded for storage, enhancing the stability and longevity of the propeller blades by preventing loosening and damage.
Implementation Method 1
The buckling component is movably disposed on the position-limiting component and has at least one buckling portion. The buckling portion is buckled to the at least one first column and prevents the position-limiting component from leaving the rotating component along the first axis when the buckling component moves to a buckling position.
Implementation Method 2
The driving unit is adapted to drive the rotating component to rotate relative to the driving unit with a first axis.
Data Source
AI summary
A rotating apparatus includes a rotating assembly and a position-limiting assembly. The rotating assembly includes a driving unit and at least one rotating component. The driving unit is adapted to drive the rotating component to rotate with a first axis. The position-limiting assembly includes a position-limiting component, at least one first column, and a buckling component. The position-limiting assembly is disposed on the rotating assembly and is adapted to limit a position of the rotating component. The first column is connected to the position-limiting component. The position-limiting component is located between the rotating component and the buckling component and is able to move along the first axis. The buckling component is movably disposed on the position-limiting component and has at least one buckling portion. The buckling portion is adapted to be buckled to the first column or move away from the first column.