Propeller folding and unfolding device for unmanned aerial vehicle

Abstract

The invention discloses a propeller folding and unfolding device for an unmanned aerial vehicle. The propeller folding and unfolding device comprises a bottom plate, three or more engine arms, a center ring, a driving component and a belt wheel transmission component. The engine arms are sequentially arranged on the bottom plate in the circumferential direction. One end of each engine arm is hinged to the bottom plate through a shaft and can rotate around the hinge point, and the other ends of the engine arms are used for allowing a propeller component of the unmanned aerial vehicle to be mounted. The center ring is located in the middle of the bottom plate, synchronous belt teeth are arranged on the center ring, a connecting rod is arranged between each engine arm and the center ring, and the driving component drives the center ring to rotate through the belt wheel transmission component and a synchronous belt so that the engine arms can be pushed to complete unfolding or folding through the connecting rods. The propeller folding and unfolding device has the advantages of being simpler in structure, easier and more convenient to operate, capable of greatly improving portability and the like.

Description

technical field [0001] The invention mainly relates to the field of unmanned aerial vehicles, in particular to a propeller retractable device suitable for multi-axis aircraft. Background technique [0002] At present, in the field of drones, multi-axis aircraft (multi-rotor drones) have attracted a large number of aircraft model enthusiasts and enthusiasts due to their simple structure, low cost, good control ability, hoverability, and suitable for personal use. With the diversity and richness of people's lifestyles, the general public has also developed a strong interest in this kind of aircraft, so the market demand for multi-rotor aircraft is huge, especially consumer-grade aerial photography drones. [0003] The main features of consumer-grade aerial photography drones are comprehensive functions, small and portable, simple operation, and good controllability. Among them, portability is one of the most notable features of consumer-grade aerial photography drones. Even ...

AI Technical Summary

Problems solved by technology

In the prior art, UAVs try their best to make a fuss about how to make them smaller, and do not comprehensively consider portability from multiple perspectives, so they cannot bring users a perfect sense of portability.

For example, in the non-working state, the blades of the existing drones cannot all be folded together, and it is easy to cause damage during carrying or transportation, and the exposed blades will also bring danger to personnel

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