Arc-Shaft Gimbal Layout for Wider Aerial Camera Viewing Angles
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Solution Overview
Problem
Existing gimbals for aerial vehicles have limited viewing angles due to motor and connector obstructions, and their complex structures reduce modal frequency and static stiffness, compromising image quality and control precision.
Innovation Solution
A gimbal design featuring a first driver mechanism for rotating a photographing device around a first rotation axis, a base connected to the driver mechanism, a second driver mechanism connected to the base, and an arc-shaped shaft arm with an accommodation space for the device, allowing its optical axis to be non-parallel to the shaft arm axis, enabling relative sliding and rotation along the second rotation axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple motors with intersecting axes are used to drive the photographing device, then the photographing device can rotate around multiple rotation axes to achieve stable photographing, but the motors and connectors block some viewing angles, resulting in a smaller viewing angle of the photographing device
Solution Approach 1:
The patent transitions from a traditional multi-axis motor arrangement to a single rotating shaft design where the photographing device is mounted on a rotating shaft. This dimensional simplification eliminates the need for multiple intersecting motor axes and connectors, thereby removing obstructions to viewing angles while maintaining the capability to rotate around multiple axes through the single shaft's rotation mechanisms
2Ease of operation
If shafts of multiple motors are connected in series using connectors, then the rotation axes can be linked to enable linkage between axes, but the cantilever becomes long and the structure becomes complex, reducing the overall modal frequency and static stiffness of the gimbal
Solution Approach 1:
The patent merges multiple motor shafts and connectors into a single integrated rotating shaft structure. This consolidation eliminates the need for series connections through multiple connectors, thereby simplifying the structure, reducing cantilever length, and increasing the overall modal frequency and static stiffness while maintaining the linkage functionality between rotation axes
Solution Approach 2:
The patent segments the gimbal structure into a modular rotating shaft design where the photographing device is mounted on a separate rotating shaft that can independently rotate. This segmentation allows the shaft to achieve multi-axis rotation capability without requiring complex series connections of multiple motor shafts, thereby reducing structural complexity
3Ease of operation
If the photographing device is located at the intersection of each rotation axis, then the device can be driven to rotate around multiple axes, but some viewing angles are blocked by motors and connectors, compromising the flexibility and applicability of the gimbal
Solution Approach 1:
The patent repositions the photographing device from the intersection of multiple motor axes to a location on a single rotating shaft. This dimensional reconfiguration allows the device to maintain multi-axis rotation capability while eliminating obstructions from motors and connectors, thereby improving flexibility and applicability across different shooting scenarios
Data Source
AI summary
A gimbal includes a first driver mechanism configured to drive a photographing device to rotate around a first rotation axis, a base connected to the first driver mechanism, a second driver mechanism connected to the base, and an arc-shaped shaft arm. An accommodation space is provided on one side of the arc-shaped shaft arm that is close to an axis of the arc-shaped shaft arm. The accommodation space is configured to accommodate the photographing device in a manner that an optical axis of the photographing device is non-parallel to the axis of the arc-shaped shaft arm. The second driver mechanism is connected to the arc-shaped shaft arm and configured to drive the photographing device to slide relatively along the arc-shaped shaft arm and rotate relative to a second rotation axis.