Eccentric Wheel UAV Power Assembly Quick Detach Mechanism
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Solution Overview
Problem
Existing unmanned aerial vehicles (UAVs) have power assemblies that are difficult to detach from the airframe due to fixed or bolted connections, making them inconvenient to change in different working environments.
Innovation Solution
The UAV design incorporates eccentric wheels on the power assembly and connecting rods on the airframe, allowing the connecting rod to be inserted and locked into the eccentric wheel by rotating it, enabling easy detachment of the power assembly from the airframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fixed connection or bolted connection is used between airframe and power assembly, then connection strength is improved, but ease of detachment deteriorates
Solution Approach 1:
The connection mechanism transitions from static (fixed/bolted) to dynamic (rotatable eccentric wheel). The eccentric wheel can rotate between a first position (locked state) and a second position (unlocked state), enabling the connection to adapt between strong fixed connection and easy detachment states.
Solution Approach 2:
The eccentric wheel introduces a curved rotational motion path instead of linear insertion/removal. The rotating wheel with its eccentric geometry creates a mechanical locking action that provides strong connection when engaged, while allowing quick release through simple rotation.
2Reliability
If fixed connection or bolted connection is used between airframe and power assembly, then connection reliability is improved, but device complexity deteriorates
Solution Approach 1:
The complex multi-step bolted connection process is extracted and replaced by a single rotational action of the eccentric wheel. The essential locking function is isolated into the eccentric wheel mechanism, simplifying the overall connection system while maintaining reliability.
3Adaptability or versatility
If power assembly is designed for easy detachment, then adaptability is improved, but connection strength deteriorates
Solution Approach 1:
The eccentric wheel mechanism dynamically adjusts the connection state. When rotated to the first position, it creates a locked state with strong connection force. When rotated to the second position, it releases the lock for easy detachment. This dynamic behavior enables both strong connection and easy detachment.
Solution Approach 2:
The connection parameters (strength, detachment ease) are changed by rotating the eccentric wheel between different positions. The same mechanism can provide high connection strength when locked, and easy detachment when unlocked, by changing its rotational position parameter.
Data Source
AI summary
The embodiment is an unmanned aerial vehicle. The unmanned aerial vehicle includes: an airframe, including first mounting portions, where the first mounting portion includes a first mounting body and connecting rods formed on the first mounting body, the connecting rods extending in a pitch axis direction; and a power assembly, including a first assembling body and eccentric wheels mounted on the first assembling body, where the eccentric wheel is rotatable between a first rotation position and a second rotation position of the first assembling body around a rotation axis of the first assembling body, the rotation axis being perpendicular to the pitch axis direction.