UAV Arm Adjustment Device with Dynamic Locking Mechanism
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Solution Overview
Problem
Existing multi-rotor-wing unmanned aerial vehicles face issues with arm detachment and folding mechanisms, leading to loose connections, stability problems, and inconvenience in transportation and storage due to cumbersome processes.
Innovation Solution
A device with left and right curb plates, a rocking arm, and a locking mechanism that allows for quick folding and unfolding of the unmanned aerial vehicle arm, utilizing a snap groove and torsional spring for secure engagement and disengagement, enabling manual operation without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable-type arm is used, then the arm can be detached for transport and storage, but the electric connection becomes problematic and the detachment process becomes troublesome
Solution Approach 1:
The arm is divided into detachable segments (first arm and second arm) that can be separated from the fuselage. Each segment has its own mounting structure with positioning grooves and positioning blocks, allowing independent detachment while maintaining electrical connection through integrated wiring channels in the mounting brackets.
Solution Approach 2:
The first arm and second arm can be nested within each other when folded, with the second arm positioned inside the first arm's mounting structure. This nesting arrangement reduces the overall footprint for storage and transport while maintaining quick detachment capability through the standardized mounting interfaces.
2Volume of moving object
If a foldable arm mechanism is used, then the arm can be folded for compact storage, but the mechanism selection and design cause loose connection and gap, affecting flight stability
Solution Approach 1:
The mounting structure incorporates a dynamic locking mechanism where the positioning block engages with the positioning groove during folding, then locks into a fixed position. The elastic component provides continuous pressure to maintain tight connection, eliminating gaps while allowing the arm to transition between extended and folded states.
Solution Approach 2:
The elastic component automatically maintains pressure between the mounting bracket and the arm, self-adjusting to compensate for any wear or dimensional variations. This self-service mechanism ensures consistent connection stability without requiring additional adjustment mechanisms or external intervention.
3Productivity
If the arm folding mechanism is simplified for easy operation, then the folding process becomes quick and simple, but the working stability of the extracted arm may be compromised
Solution Approach 1:
The locking and unlocking function is extracted as a separate, dedicated mechanism independent of the folding motion itself. The user simply pulls the arm to unlock it from the positioning groove, while the elastic component automatically maintains the locked position during operation. This separation allows quick operation without compromising the stability of the working position.
4Ease of operation
If the arm is made detachable for portability, then transport and storage become easier, but the detachment process becomes troublesome and time-consuming
Solution Approach 1:
The mounting structure features self-aligning positioning grooves and positioning blocks that automatically guide the arm into the correct position during attachment. The elastic component automatically engages the locking mechanism, eliminating the need for manual alignment or multiple adjustment steps. This self-service design reduces detachment and attachment time while maintaining secure connection.
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
Facilitates quick and stable folding/unfolding of the arm, enhancing usability and portability by simplifying the process, ensuring the arm remains stable during flight and simplifying transportation and storage.
Implementation Method 1
a torsional spring mounded on the depressing plate, for biasing the columnar member towards the snap groove
Data Source
AI summary
An unmanned aerial vehicle arm adjustment device for adjusting an unmanned aerial vehicle arm into a folding state or an extracting state with respect to a fuselage of the aerial vehicle includes: left and right curb plates connected to the fuselage; a rocking arm connected to the unmanned aerial vehicle arm, wherein one end of the rocking arm is articulated with the left and right curb plates, and a first engaging part is provided on the rocking arm; and a locking member articulated with the left and right curb plates, wherein the locking member is provided with a second engaging part for engaging with the first engaging part; wherein the locking member is adapted to rotate in a first direction to force the second engaging part to engage with the first engaging part so as to hold the rocking arm such that the unmanned aerial vehicle arm is in the extracting state; and wherein the locking member is adapted to rotate in a second direction opposite to the first direction to force the second engaging part to disengage with the first engaging part so as to release the rocking arm such that the unmanned aerial vehicle arm is able to be rotated into the folding state.