UAV Arm Mechanism with Dynamic Locking for Quick Folding
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Solution Overview
Problem
Existing UAV arm structures require external tools for cumbersome disassembly and assembly, and do not efficiently fold for storage and transportation, reducing user experience and increasing space occupation.
Innovation Solution
A UAV arm mechanism comprising an arm fixed device, control device, limiting device, and arm connecting device that switches among three states through relative rotation, allowing for easy assembly, disassembly, and folding via a control device that drives the limiting device to lock and unlock positions between the arm fixed and connecting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the arm structure is fixed with the fuselage through the bolt structure to ensure strength requirements, then the structural strength is improved, but the disassembly and assembly process becomes cumbersome and time-consuming
Solution Approach 1:
The arm structure is divided into multiple segments (first arm, second arm, third arm, fourth arm) that can be independently assembled and disassembled. Each arm connects to the fuselage or other arms through separate connecting devices with locking mechanisms, allowing modular assembly that maintains structural integrity while reducing overall assembly time compared to a single bolted structure.
Solution Approach 2:
The connecting devices incorporate dynamic locking mechanisms that transition between locked and unlocked states. The locking components (such as locking blocks and locking grooves) can be quickly engaged or disengaged by actuating the control device, enabling the arm structure to dynamically switch between fixed (for strength) and movable (for quick assembly/disassembly) states.
2Stability of the object's composition
If the arm structure is fixed with the fuselage through the bolt structure, then the structural stability is improved, but the ease of operation for disassembly and assembly deteriorates
Solution Approach 1:
The connecting device acts as an intermediary between the arm structure and the fuselage. It includes intermediate components such as connecting plates, locking blocks, and actuating mechanisms that mediate the connection process. These intermediaries enable stable structural connection when locked, while providing a simple interface for quick assembly and disassembly through the control device.
Solution Approach 2:
The locking mechanism is designed to be self-actuating through the control device. When the control device is actuated, it automatically triggers the locking blocks to engage with or disengage from the locking grooves, eliminating the need for external tools or complex manual operations. The system serves itself by converting the control input directly into the locking state change.
3Volume of moving object
If the arm structure is designed to be foldable for storage, then the storage space efficiency is improved, but the device complexity increases
Solution Approach 1:
The arm structure is segmented into multiple independently controllable arms (first, second, third, fourth arms) connected through separate connecting devices. This segmentation allows each arm to be folded independently along the fuselage during storage, achieving compact configuration without requiring a complex single-piece folding mechanism. The modular nature simplifies the overall folding logic.
Solution Approach 2:
The connecting devices serve multiple functions: they provide structural connection between arms, enable locking for stability during operation, allow quick assembly and disassembly, and facilitate folding during storage. By integrating these diverse functions into a single standardized connecting device design, the patent avoids the complexity that would arise from having separate mechanisms for each function.
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
Enables quick and convenient assembly, disassembly, and folding of the UAV arm, improving user experience by reducing assembly time and storage space requirements, while maintaining structural stability and reliability.
Implementation Method 1
the spring is adapted for driving the two positioning pins along the axis of the center pin to be respectively inserted into the two first positioning pin holes
Data Source
AI summary
A UAV (unmanned aerial vehicle) arm mechanism includes an arm fixed device, a control device, a limiting device, and an arm connecting device, wherein the control device is adapted for controlling an assembly and disassembly of the arm fixed device and the arm connecting device, the limiting device is adapted for relatively fixing the arm fixed device and the arm connecting device; the control device is adapted for driving the limiting device to be detached from the arm connecting device, so as to achieve that the arm fixed device and the arm connecting device switch among at least three different states through a relative rotation. The UAV and the UAV arm mechanism can be locked up through the positioning pins, and also can be folded and disassembled after pressing the controlling device.