Unmanned aerial vehicle with protective structure

Abstract

The utility model provides an unmanned aerial vehicle with a protective structure, which comprises an unmanned aerial vehicle body and a protective device, the protective device comprises a mounting ring horizontally sleeved outside the unmanned aerial vehicle body, a movable ring is coaxially and rotatably arranged on the mounting ring, and a flexible protective cover is arranged between the movable ring and the mounting ring. When the protection cover is in a folded state, the wind resistance influence on the flight of the unmanned aerial vehicle is extremely small. When the unmanned aerial vehicle breaks down or needs to land in a complex ground environment, the movable ring rotates by a certain angle so that the protection cover can be unfolded, a closed structure surrounding the unmanned aerial vehicle body is formed, the protection cover is made of a flexible material and can buffer the impact force generated when the unmanned aerial vehicle falls, protection can be conducted when the unmanned aerial vehicle falls, and losses are reduced; and the unmanned aerial vehicle can be separated from a complex ground environment, so that the unmanned aerial vehicle is prevented from being damaged. Normal flight of the unmanned aerial vehicle is not affected while the unmanned aerial vehicle is effectively protected, and a better use effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a unmanned aerial vehicle with a protective structure. Background Art

[0002] Unmanned aerial vehicles are referred to as drones, and their English abbreviation is "UAV". They are unmanned aircraft that are controlled by radio remote control equipment and self-provided program control devices. From a technical point of view, they can be divided into: unmanned fixed-wing aircraft, unmanned vertical take-off and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi-rotor aircraft, unmanned paragliders, etc. The wide application of drones in aerial photography, agriculture, plant protection, selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspections, disaster relief, film and television shooting, creating romance, etc. has greatly expanded the use of drones themselves. Countries are also actively expanding industry applications and developing drone technology.

[0003] With the development of drones, small rotor drones have become cheaper and easier to use, so they are widely used in daily life. However, drones may lose control and crash during use due to their own faults, complex flight environments, or geomagnetic influences. In addition, when landing, drones are also affected by ground environmental factors. For example, when landing in woods, grasslands, rocky areas, etc., it is easy to cause damage to equipment such as rotors or landing gear. Considering that the minimum price of a small drone is several thousand, the damage caused by daily use is still an unacceptable loss. Therefore, protective structures are needed to protect them.

[0004] Chinese patent CN109204792A discloses a multi-rotor drone protection ball, which is composed of a graphene shell, an outer ring and an inner ring. The graphene shell has a hollow shell structure. The graphene shell has the flexibility of a ball that is approximately spherical. The protection ball can rotate 360° around the drone. The two nested rings are connected to the drone's graphene molecular structure through bearings. The center of gravity of the two rings and the protection ball coincides with the center of gravity of the drone. Therefore, the protection structure can rotate 360° around the drone and can protect the drone in all directions.

[0005] Although the fully enclosed spherical structure of the above patent can provide good protection for drones, it still has some major problems. Because it uses a hollow shell, although it can allow air to pass through and allow the drone to fly, it will still greatly increase the wind resistance during the flight, which greatly affects the flight and control performance of the drone. Therefore, a better drone protection structure is needed. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a drone with a protective structure, which solves the problem in the prior art that the protective shell of the drone greatly increases the wind resistance during flight, thereby greatly affecting the flight and control performance of the drone.

[0007] According to an embodiment of the utility model, a drone with a protective structure includes a drone body and a protective device, wherein the protective device includes a horizontally arranged mounting ring, the mounting ring is sleeved outside the drone body, and the center of gravity of the mounting ring coincides with the center of gravity of the drone body, the mounting ring is rotated radially to form a sphere that completely covers the drone body, and the inner edge of the mounting ring is provided with a plurality of radially arranged fixing rods, and the inner ends of the fixing rods are fixedly connected to the outer wall of the drone body;

[0008] A movable ring is coaxially arranged on the mounting ring. The movable ring can rotate radially around the mounting ring. A flexible protective cover is arranged between the movable ring and the mounting ring. When the movable ring is in an initial position and overlaps with the mounting ring, the protective cover is in a folded state. When the movable ring rotates a certain angle, the protective cover forms a closed structure surrounding the drone body along the mounting ring and the movable ring.

[0009] Furthermore, the movable ring includes two upper and lower half rings, the upper and lower half rings have the same diameter as the mounting ring, and are staggered on the upper and lower sides of the mounting ring, so that the endpoints of the upper and lower half rings overlap in the vertical direction.

[0010] Furthermore, a radial rotating shaft is arranged between the upper half ring or the lower half ring and the drone body, one end of the rotating shaft is rotatably arranged on the drone body and driven by a motor arranged inside the drone body, and the other end of the rotating shaft is fixedly connected to the end point of the upper half ring or the lower half ring, driving the upper half ring or the lower half ring to rotate along the rotating shaft within a range of 180°.

[0011] Furthermore, a rotating shaft is respectively disposed at both ends of the upper half ring or the lower half ring, the two rotating shafts are coaxially arranged, and one of the rotating shafts is connected to the motor.

[0012] Furthermore, a connecting tube is sleeved on the outside of the rotating shaft, and the connecting tube is fixedly connected to the outer wall of the drone body to completely accommodate the rotating shaft.

[0013] Furthermore, the protective cover includes a plurality of protective rods stacked with the upper half ring or the lower half ring. The protective rod sheet structure has the same shape as the upper half ring or the lower half ring, and both ends are rotatably connected to the rotating shafts set at both ends of the upper half ring or the lower half ring so that it coincides with the rotating surface of the upper half ring or the lower half ring.

[0014] Furthermore, elastic ropes are provided between the protection rods, and the elastic ropes are sequentially arranged between adjacent protection rods along the latitude direction.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The protective device of the utility model comprises a mounting ring sleeved on the outside of the drone body and a movable ring arranged outside the mounting ring, wherein the movable ring can rotate radially around the mounting ring, and a flexible protective cover is also arranged between the movable ring and the mounting ring. When the movable ring is in the initial position and overlaps with the mounting ring, the protective cover is in a folded state. At this time, the mounting ring is a single-piece ring structure, which has little effect on the wind resistance of the drone flight. When the drone fails and falls, or needs to land in a complex ground environment, the movable ring rotates a certain angle, so that the protective cover unfolds, forming a closed structure that surrounds the drone body along the mounting ring and the movable ring. Because the protective cover is a flexible material, it can buffer the impact force of the drone falling, not only can it protect the drone when it falls and reduce losses, but it can also separate the drone from the complex ground environment to protect the drone from damage. Thereby, while effectively protecting the drone, it does not affect the normal flight of the drone, and has a better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0018] Figure 2 It is a side view schematic diagram of the protective cover when it is folded in the embodiment of the utility model.

[0019] Figure 3 It is a side view schematic diagram of the protective cover in the embodiment of the utility model when it is fully unfolded.

[0020] In the above drawings: 1, drone body; 2, mounting ring; 3, movable ring; 4, fixing rod; 5, rotating shaft; 6, protective rod; 7, elastic rope; 31, upper half ring; 32, lower half ring. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, the embodiment of the utility model provides a drone with a protective structure, including a drone body 1 and a protective device. The drone body 1 is a small rotor drone, and its overall structure is that the fuselage extends outward with multiple connecting plates, and the rotor is arranged at the end of the connecting plate.

[0023] In this embodiment, the protective device includes a horizontally arranged mounting ring 2, which is sleeved on the outside of the drone body 1, and the center of gravity of the mounting ring 2 coincides with the center of gravity of the drone body 1. The mounting ring 2 rotates radially to form a sphere that completely covers the drone body 1. Two coaxial and radial fixing rods 4 are arranged on the inner edge of the mounting ring 2, and the inner ends of the fixing rods 4 are fixedly connected to the outer wall of the drone body 1. Thus, the mounting ring 2 is fixed to the outside of the drone body 1, and the mounting ring 2 does not affect the operation of the drone.

[0024] A movable ring 3 is coaxially arranged on the mounting ring 2. The movable ring 3 can rotate radially around the mounting ring 2. A flexible protective cover is arranged between the movable ring 3 and the mounting ring 2. When the movable ring 3 is in an initial position and overlaps with the mounting ring 2, the protective cover is in a folded state. When the movable ring 3 rotates a certain angle, the protective cover forms a closed structure surrounding the drone body 1 along the mounting ring 2 and the movable ring 3.

[0025] In a specific solution, the movable ring 3 includes an upper half ring 31 and a lower half ring 32. The upper half ring 31 or the lower half ring 32 has the same diameter as the mounting ring 2 and is staggered on the upper and lower sides of the mounting ring 2, respectively, so that the endpoints of the upper half ring 31 or the lower half ring 32 overlap in the vertical direction. A radial rotating shaft 5 is arranged between the upper half ring 31 or the lower half ring 32 and the drone body 1. One end of the rotating shaft 5 is rotatably arranged on the drone body 1 and driven by a motor arranged inside the drone body 1. The other end of the rotating shaft 5 is fixedly connected to the endpoint of the upper half ring 31 or the lower half ring 32, driving the upper half ring 31 or the lower half ring 32 to rotate along the rotating shaft 5 within a range of 180°.

[0026] A rotating shaft 5 is respectively provided at both ends of the upper half ring 31 or the lower half ring 32, and the two rotating shafts 5 are coaxially arranged, and one of the rotating shafts 5 is connected to the motor. That is, the motor drives the rotating shaft 5 to rotate, thereby driving the protective cover to expand or collapse. Furthermore, a connecting tube is also sleeved on the outside of the rotating shaft 5, and the connecting tube is fixedly connected to the outer wall of the drone body 1, completely accommodating the rotating shaft 5. In this way, the rotating shaft 5 itself can be protected to prevent external dust and other debris from entering the gap of the rotating shaft 5 and causing damage to the rotating shaft 5 or other components.

[0027] like Figure 2 , Figure 3As shown, in this embodiment, preferably, the protective cover connected to the upper half ring 31 or the lower half ring 32 includes twelve protective rods 6 stacked with the half ring, and the protective rods 6 are thin-sheet structures, and their shapes are the same as those of the upper half ring 31 or the lower half ring 32, and their two ends are rotatably connected to the rotating shafts 5 arranged at the two ends of the upper half ring 31 or the lower half ring 32, so that they coincide with the rotating surface of the upper half ring 31 or the lower half ring 32. Elastic ropes 7 are also arranged between the protective rods 6, and the elastic ropes 7 are arranged in sequence between adjacent protective rods 6 along the latitude direction. When the half ring rotates, the protective rods 6 are pulled in sequence by the elastic ropes 7 to rotate accordingly. When the elastic ropes 7 rotate 180° to the other side of the mounting ring 2, all the protective rods 6 are pulled and unfolded, and are connected in sequence by the elastic ropes 7 to form a protective structure.

[0028] It should be briefly explained that in this embodiment, the mounting ring 2, the upper half ring 31, the lower half ring 32 and the protective rod 6 are all made of carbon fiber material. While ensuring their structural strength, their mass is reduced as much as possible to reduce the weight of the drone, thereby maintaining the flight performance of the drone.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A drone with a protective structure, comprising a drone body and a protective device, characterized in that: The protective device comprises a horizontally arranged mounting ring, the mounting ring is sleeved on the outside of the drone body, and the center of gravity of the mounting ring coincides with the center of gravity of the drone body. The mounting ring is rotated radially to form a sphere that completely covers the drone body. The inner edge of the mounting ring is provided with a plurality of radially arranged fixing rods, and the inner ends of the fixing rods are fixedly connected to the outer wall of the drone body. A movable ring is coaxially arranged on the mounting ring. The movable ring can rotate radially around the mounting ring. A flexible protective cover is arranged between the movable ring and the mounting ring. When the movable ring is in an initial position and overlaps with the mounting ring, the protective cover is in a folded state. When the movable ring rotates a certain angle, the protective cover forms a closed structure surrounding the drone body along the mounting ring and the movable ring.

2. The UAV with a protective structure according to claim 1, characterized in that: The movable ring includes two upper and lower half rings, which have the same diameter as the mounting ring and are staggered on the upper and lower sides of the mounting ring so that the endpoints of the upper and lower half rings overlap in the vertical direction.

3. The UAV with a protective structure as claimed in claim 2, characterized in that: A radial rotating shaft is arranged between the upper half ring or the lower half ring and the drone body, one end of the rotating shaft is rotatably arranged on the drone body and driven by a motor arranged inside the drone body, and the other end of the rotating shaft is fixedly connected to the end point of the upper half ring or the lower half ring, driving the upper half ring or the lower half ring to rotate along the rotating shaft within a range of 180°.

4. The UAV with a protective structure as claimed in claim 3, characterized in that: A rotating shaft is respectively arranged at both ends of the upper half ring or the lower half ring, and the two rotating shafts are coaxially arranged, and one of the rotating shafts is connected to the motor.

5. The UAV with a protective structure as claimed in claim 3, characterized in that: A connecting tube is also sleeved on the outside of the rotating shaft, and the connecting tube is fixedly connected to the outer wall of the drone body to completely accommodate the rotating shaft.

6. The UAV with a protective structure according to claim 3, characterized in that: The protective cover includes a plurality of protective rods stacked with the upper half ring or the lower half ring. The protective rod sheet structure has the same shape as the upper half ring or the lower half ring, and both ends are rotatably connected to the rotating shafts set at both ends of the upper half ring or the lower half ring so that it coincides with the rotating surface of the upper half ring or the lower half ring.

7. The UAV with a protective structure according to claim 6, characterized in that: Elastic ropes are also arranged between the protection rods, and the elastic ropes are sequentially arranged between adjacent protection rods along the weft direction.

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