Gimbal Motor Flex Circuit Layout for Compact Camera Stabilization
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Solution Overview
Problem
Existing gimbal devices for unmanned aerial vehicles face challenges in achieving a compact, lightweight structure while maintaining excellent camera posture retention and efficient electrical connectivity, leading to increased size and manufacturing costs.
Innovation Solution
The gimbal device incorporates a unique connection unit design with flexible circuit boards that cover a portion of the motor's outer surface, allowing for rotation and reducing overall length, enhancing electrical stability and minimizing size through reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional rigid connection unit is used to electrically connect the motor, then electrical connectivity is achieved, but the overall size and length of the gimbal device increases
Solution Approach 1:
The connection unit is designed as a flexible circuit board that can dynamically change its shape and bend to accommodate the motor's rotation, replacing a rigid static structure with a dynamic adaptive one. This allows the connection unit to maintain electrical connectivity while adapting to the spatial requirements of the rotating motor, thereby reducing the overall device size.
Solution Approach 2:
The flexible connection unit is positioned to cover a portion of the motor's outer surface, with the circuit board nested around the motor housing. This nesting arrangement allows the connection unit to follow the motor's contours and occupy minimal space, integrating the electrical connection function within the existing motor structure rather than adding separate external connection components.
2Volume of moving object
If the connection unit length is reduced to minimize device size, then compactness is improved, but electrical stability may deteriorate
Solution Approach 1:
The connection unit utilizes a flexible circuit board that maintains electrical conductivity while being bent and deformed. The flexible nature of the circuit board allows it to follow the motor's rotation and housing contours without compromising electrical contact, ensuring stable signal and power transmission even in a compact configuration with reduced length.
Solution Approach 2:
The connection unit is designed with curved regions that match the cylindrical shape of the motor housing. These curved portions of the flexible circuit board maintain consistent contact with the motor terminals during rotation, ensuring electrical stability while allowing the connection unit to wrap around the motor in a compact arrangement rather than extending linearly.
3Adaptability or versatility
If the connection unit is designed to rotate with the motor, then adaptability to three-dimensional rotation is improved, but manufacturing complexity increases
Solution Approach 1:
The flexible circuit board is designed with predetermined bend regions and flexible zones that allow it to naturally follow the motor's rotation path. This dynamic design enables the connection unit to rotate with the motor without requiring complex mechanical joints or detachable connections, simplifying the manufacturing process while maintaining full rotational adaptability for three-dimensional gimbal movements.
Data Source
AI summary
This gimbal device comprises: a driving unit in which a main board is disposed; a first housing coupled to the driving unit; a first motor disposed within the first housing; and a first connection unit electrically connected to the first motor. The first connection unit includes: a first region extending in a first circumferential direction along the outer circumferential surface of the first motor; a first bent region bent from the first region; and a second region extending from the first bent region in a second circumferential direction, wherein one among the first circumferential direction and the second circumferential direction is the clockwise direction, and the other is the counterclockwise direction.