Multi-Rotation Gimbal Assembly With Controlled Rotation Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gimbal assemblies are limited to single rotation about each rotational axis, which is insufficient for applications requiring multiple rotation freedoms, particularly in unmanned aerial vehicles (UAVs) for tasks like aerial photography and thermal imaging.
Innovation Solution
A gimbal assembly design that includes a mount flange, anti-rotation pin, gimbal, cover, and stop washer or gear washer, allowing for multi-rotational capabilities by using engagement protrusions and anti-rotation protrusions to limit rotations within predetermined ranges in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional gimbal assembly is used with single rotation limitation, then the structure is simple and easy to manufacture, but the freedom of movement is insufficient for applications requiring multiple rotation freedoms
Solution Approach 1:
The invention applies the dynamics principle by making the rotational constraint adjustable rather than fixed. The gimbal assembly allows dynamic transition between single-rotation and multi-rotation modes through the engagement and disengagement of the stop washer with the anti-rotation pin, enabling the structure to adapt its degrees of freedom based on operational requirements.
Solution Approach 2:
The invention segments the rotational constraint function into separate components: the stop washer with engagement protrusions, the anti-rotation pin, and the removable cover. This segmentation allows independent control of rotational freedom - the stop washer provides multi-rotation capability when engaged, while the cover can be removed to enable unlimited rotation, thus resolving the contradiction between structural simplicity and movement versatility.
2Reliability
If the stop washer prevents rotation beyond predetermined limits, then the rotational range is controlled and reliable, but the flexibility to rotate freely in both directions is reduced
Solution Approach 1:
The stop washer design implements dynamic rotational control where the engagement protrusions can selectively engage with the anti-rotation pin to prevent over-rotation in either direction. The system transitions between constrained and free rotation states based on the rotational direction and magnitude, providing reliable limits when needed while maintaining operational flexibility.
Solution Approach 2:
The stop washer features asymmetric engagement protrusions positioned at specific locations to provide different rotational limits in clockwise and counter-clockwise directions. This asymmetric design allows the gimbal to have different operational ranges in opposite directions, enhancing ease of operation for specific application requirements while maintaining reliable rotational control.
Data Source
AI summary
A gimbal assembly is provided that allows for more than a single rotation about a rotational axis in both a first rotational direction and a second rotational direction.