Foldable Multi-Rotor UAV Arm Nesting Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional multi-rotor UAVs face challenges with larger size, complex manual installation, reduced space utilization when arms are folded, and exposed blades that can cause damage or scratching during transportation and storage.
Innovation Solution
A foldable multi-rotor UAV design featuring a rotating mechanism that allows arms to fold inwardly, with blades and motors placed between the arms and fuselage, providing a compact and clean appearance, high space utilization, and protection against damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the arms are designed to be foldable without manual installation, then the ease of operation is improved, but the space utilization rate deteriorates
Solution Approach 1:
The patent implements nesting by placing the folded arms inside the fuselage cavity. The arms are designed to rotate and nest within the body structure, with the blades retracting along the arms during folding. This allows the movable arm components to be contained within the stationary fuselage volume, improving space utilization while maintaining automatic foldability.
2Length of moving object
If the arms are folded to reduce size, then the portability is improved, but the blade exposure increases
Solution Approach 1:
The patent applies nesting by having the blades nested within the arm structure during folding. The blades are designed to retract along the arm length and be contained within the fuselage when the arm is folded, preventing blade exposure while achieving compact dimensions for portability.
Solution Approach 2:
The patent utilizes dimensional reorganization by arranging the folded arms and blades in three-dimensional space within the fuselage cavity. Instead of simple linear folding, the arms rotate and position themselves in multiple spatial dimensions, with blades oriented parallel to the fuselage walls, effectively hiding them from external view and contact.
3Ease of manufacture
If the blades are exposed during folding, then the manufacturing simplicity is improved, but the harmful effects increase
Solution Approach 1:
The patent implements nesting to contain the blades within the arm and fuselage structures, eliminating the harmful effect of exposed blades during folding while maintaining relatively simple manufacturing through integrated design of the blade-arm-fuselage system.
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 design enables easy carrying, prevents blade exposure, and maintains a clean appearance while ensuring blades and motors are protected from damage, enhancing operational convenience and space efficiency.
Implementation Method 1
a first end of each of the arms is connected to a side face of the fuselage through a rotating mechanism; each of the arms rotate relatively to the fuselage through the rotating mechanism
Data Source
AI summary
A foldable multi-rotor UAV includes: a fuselage; and a plurality of arms, wherein a first end of each of the arms is connected to a side face of the fuselage through a rotating mechanism; a motor and foldable blades connected to the motor are provided on a second end of each of the arms; each of the arms rotate relatively to the fuselage through the rotating mechanism; wherein the arms comprises a front arm and a rear arm; during a folded state, the rear arm upwardly rotates towards the fuselage for folding, in such a manner that the rear arm is contained at a lower portion of the side face of the fuselage; then the front arm upwardly rotates towards the fuselage for folding, in such a manner that the front arm is contained at an upper portion of the side face of the fuselage.