Unmanned aerial vehicle air crash protection device

Abstract

The utility model relates to the technical field of small prefabricated part manufacturing, in particular to an unmanned aerial vehicle air crash protection device which comprises a vehicle body, flight arms are arranged on the periphery of the vehicle body, a support is installed on the flight arms, and flight propellers are installed at the top end of the support through motors. A blade protection mechanism used for protecting the flight propeller is annularly arranged on the curved surface on the periphery of the support, the end of the folding arm is installed on the periphery of the support through a rotary connecting assembly, and a protruding part is arranged at the other end of the folding arm. The foldable unmanned aerial vehicle has the advantages that the protection plate can be detached and divided into a plurality of plate-shaped structures when not in use, the folding arms can be folded with the support when not in use, overall folding storage of the unmanned aerial vehicle is not affected, the foldable unmanned aerial vehicle is convenient to carry, and when the unmanned aerial vehicle executes a flight task, only the folding arms need to be unfolded, and the foldable unmanned aerial vehicle can be conveniently folded and stored. And then the protection plates are connected one by one and are finally mounted at the end parts of the folding arms, so that the paddle protection mechanism can be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a crash protection device for UAVs. Background Art

[0002] A drone is an unmanned aircraft that is controlled by a radio remote control device and its own program control device. Compared with manned aircraft, drones are often more suitable for dirty or dangerous tasks. Drones are currently widely used in aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspections, disaster relief, film and television shooting, etc.

[0003] Since drones use radio remote control equipment and self-contained program control devices to control the aircraft, the aircraft and the control equipment often lose contact during flight due to the environment in which the aircraft is located. Although by adding a parachute and intervening in the drone protection system, the drone operator or the flight control system will trigger the parachute opening control device after the drone malfunctions or collides, so that the drone can still land slowly when it falls on the parachute, but in actual use, when the drone lands, it is easy to cause the drone's blades to be damaged due to the loss of balance of the drone, which increases the cost of maintenance. Although many drones in the existing technology have already protected the blades, this protection device makes the originally foldable drone unable to be folded, which greatly reduces its convenience. Based on this, the utility model proposes a drone crash protection device. Utility Model Content

[0004] The purpose of the present invention is to provide a crash protection device for a UAV to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, a drone crash protection device is provided, comprising a body, flight arms arranged around the body, a bracket mounted on the flight arm, a flight propeller mounted on the top of the bracket via a motor, a blade protection mechanism for protecting the flight propeller arranged in a curved ring around the bracket, the blade protection mechanism having a C-shaped structure surrounding the periphery of the flight propeller, with a C-shaped notch aligned with the position of the flight arm;

[0006] The blade protection mechanism includes a fixed terminal, a movable terminal, a pin, a folding arm and a protection plate. The fixed terminal, the movable terminal and the pin are combined into a rotating connection assembly. The end of the folding arm is mounted on the four sides of the bracket through the rotating connection assembly. The other end of the folding arm is provided with a protrusion.

[0007] There are several protective plates, which are connected to each other to form a curved C-shaped structure. A recessed portion that cooperates with the protrusion is provided on the inner wall of the protective plate. The protective plate is vertically connected to the folding arm through the cooperation of the protrusion and the recessed portion.

[0008] Furthermore, the fixed terminal is fixedly mounted on the curved surface of the bracket, the movable terminal is fixedly connected to one end of the folding arm, the fixed terminal is inserted into the middle of the movable terminal and connected through a pin shaft, and a damper is also provided on the rotating connection assembly. The function of the damper is to make the folding arm have a certain stability when unfolded; the stability of the folding arm is also achieved through the connection with the protective plate. When the folding arm is connected to the protective plate, since the adjacent protective plates are snap-fitted, it is equivalent to connecting the folding arms together. In this state, the folding arms cannot be folded individually.

[0009] Furthermore, the protective plate has a trapezoidal structure, a limiting groove is provided on the side wall of one end of the protective plate, and a limiting block is provided on the side wall of the other end, and any two adjacent protective plates are snap-connected through the limiting groove and the limiting block.

[0010] Furthermore, the protrusion includes at least two rows of protruding pins, and the recessed portion is correspondingly provided with two rows of sockets, and the sockets are respectively opened at the left and right ends of the protective plate, that is, the protrusion can simultaneously connect two adjacent protective plates, and an angle is formed between the two adjacent protective plates, and the angle is an obtuse angle.

[0011] Furthermore, the protrusion is specifically composed of several pins, and the end of the pin is provided with an inwardly recessed blind hole. The end of the inner wall of the recess is installed with a spherical locking ball through a spring. When the protrusion is inserted into the recess, the locking ball is also locked into the blind hole.

[0012] Furthermore, the folding arm can rotate along the pin shaft, and the rotation angle range is between 0° and 90°. When the rotation angle of the folding arm is 0°, the folding arm is perpendicular to the bracket, and when the rotation angle of the folding arm is 90°, the folding arm is parallel to the bracket.

[0013] Furthermore, the length of the folding arm is greater than the length of the blade of the flying paddle, and the C-shaped structure formed by a plurality of the protective plates wraps the flying paddle.

[0014] Furthermore, a landing bracket is provided at the bottom of the body, and the landing bracket is connected to the body through a buffer spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The protective plate can be disassembled when not in use and divided into several individual plate-like structures. The folding arm can be folded together with the bracket when not in use, which does not affect the overall folding and storage of the drone and is convenient to carry. When the drone is performing a flight mission, it only needs to unfold the folding arm, and then connect the protective plates one by one and finally install them at the end of the folding arm to form a blade protection mechanism.

[0017] 2. The propeller protection mechanism can wrap the entire propeller inside. When the drone crashes, the propeller protection mechanism can come into contact with the ground or other obstacles in advance, thus avoiding damage to the propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a top view of the structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the protection plate in the present utility model;

[0021] Figure 4 Schematic diagram of the blade protection mechanism of the present invention;

[0022] Figure 5 This is a structural connection diagram of the folding arm and the protection plate in the utility model;

[0023] Figure 6 For this utility model Figure 5 Magnified view of structure A.

[0024] The meaning of each number in the figure is:

[0025] 1. Body; 2. Flight arm; 3. Bracket; 5. Motor; 6. Flight propeller; 7. Propeller blade protection mechanism; 701. Fixed terminal; 702. Movable terminal; 703. Pin shaft; 704. Folding arm; 705. Protection plate; 706. Protrusion; 707. Recess; 708. Limit groove; 709. Limit block; 8. Blind hole; 9. Blocking ball. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a," "an," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] See also Figure 1-6 As shown, a UAV crash protection device is provided, comprising a body 1, wherein a flight arm 2 is provided around the body 1, a bracket 3 is mounted on the flight arm 2, a flight paddle 6 is mounted on the top of the bracket 3 via a motor 5, and a blade protection mechanism 7 for protecting the flight paddle 6 is provided in a curved ring around the bracket 3. The blade protection mechanism 7 is a C-shaped structure surrounding the periphery of the flight paddle 6, with a C-shaped notch aligned with the position of the flight arm 2;

[0029] The blade protection mechanism 7 includes a fixed terminal 701, a movable terminal 702, a pin 703, a folding arm 704, and a protection plate 705. The fixed terminal 701, the movable terminal 702, and the pin 703 are combined into a rotating connection assembly. The ends of the folding arm 704 are mounted around the bracket 3 through the rotating connection assembly. The other end of the folding arm 704 is provided with a protrusion 706.

[0030] The length of the folding arm 704 is greater than the length of the blade of the flying paddle 6, wherein the C-shaped structure formed by the plurality of protective plates 705 wraps the flying paddle 6;

[0031] There are several protective plates 705, and several protective plates 705 are connected to each other to form a curved C-shaped structure. A recessed portion 707 cooperating with the protrusion 706 is provided on the inner wall of the protective plate 705. The protective plate 705 is vertically connected to the folding arm 704 through the cooperation of the protrusion 706 and the recessed portion 707. After the folding arm 704 and the protective plate 705 are connected, a circle of anti-crash protective cover is formed on the outside of the flying paddle 6. In this way, when the drone falls, the blade protection mechanism 7 will contact the ground or obstacles earlier than the flying paddle 6, which can effectively avoid damage to the flying paddle 6 caused by a crash.

[0032] like Figure 4 As shown:

[0033] The fixed terminal 701 is fixedly mounted on the curved surface of the bracket 3, the movable terminal 702 is fixedly connected to one end of the folding arm 704, the fixed terminal 701 is inserted into the middle of the movable terminal 702 and is connected by a pin 703, and a damper is further provided on the rotating connection assembly, the function of the damper is to make the folding arm 704 have a certain stability when unfolded; the stability of the folding arm 704 is also achieved by the connection with the protective plate 705. When the folding arm 704 is connected to the protective plate 705, since each adjacent protective plate 705 is a snap connection, it is equivalent to connecting each folding arm 704 together. In this state, each folding arm 704 cannot be folded separately; the folding arm 704 can be rotated along the pin 703, and its rotation angle range is between 0 and 90 degrees. When the folding arm 704 rotates at an angle of 0 degrees, the folding arm 704 is perpendicular to the bracket 3, and when the folding arm 704 rotates at an angle of 90 degrees, the folding arm 704 is parallel to the bracket 3;

[0034] like Figure 3 As shown:

[0035] The protective plate 705 has a trapezoidal structure. A limiting groove 708 is provided on the side wall of one end of the protective plate 705, and a limiting block 709 is provided on the side wall of the other end. Any two adjacent protective plates 705 are snap-connected by the limiting groove 708 and the limiting block 709. When the two protective plates 705 are connected together, an angle is formed between them, and the angle is an obtuse angle. The end of the folding arm 704 connected to the protective plate 705 is provided with a sharp protrusion structure with the same angle.

[0036] The protrusion 706 includes at least two rows of protruding pins, and the recessed portion 707 is correspondingly provided with two rows of sockets, which are respectively opened at the left and right ends of the protection plate 705, that is, the protrusion 706 can connect two adjacent protection plates 705 at the same time.

[0037] like Figure 6 As shown:

[0038] The protrusion 706 is specifically composed of several pins, and the end of the pin is provided with an inwardly recessed blind hole 8. The end of the inner wall of the recess 707 is installed with a spherical locking ball 9 through a spring. When the protrusion 706 is inserted into the recess 707, the locking ball 9 is also locked into the blind hole 8. When the locking ball 9 is locked into the blind hole 8, the connection strength between the folding arm 704 and the protective plate 705 is increased, so that the two will not be easily separated, and the spherical snap-in structure makes it more convenient to disassemble.

[0039] Working process:

[0040] Before the UAV flies, the folding arm 704 is unfolded from 90 degrees to keep it perpendicular to the bracket 3 at 90 degrees. Then, several protective plates 705 are installed one by one on the folding arm 704, and any two adjacent protective plates 705 are connected to form a whole through the limiting groove 708 and the limiting block 709. The formed protective plate 705 is further connected to the folding arm 704 by the protrusion 706 and the recessed portion 707 to form a whole. In this way, the folding arms 704 cannot be bent and folded at the same time, thereby ensuring the stability of the blade protection mechanism 7.

[0041] After installation, the horizontal height of the protective plate 705 is higher than the horizontal position of the flying paddle 6. Once the drone encounters an accident and is about to crash during flight, the protective plate 705 and the folding arm 704 will come into contact with the ground or obstacles in advance, thereby protecting the flying paddle 6 from being broken.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A UAV crash protection device, comprising a body (1), characterized in that: A flight arm (2) is provided around the body (1), a bracket (3) is installed on the flight arm (2), a flight paddle (6) is installed at the top of the bracket (3) via a motor (5), and a blade protection mechanism (7) for protecting the flight paddle (6) is provided in a curved ring shape around the bracket (3); The blade protection mechanism (7) comprises a fixed terminal (701), a movable terminal (702), a pin (703), a folding arm (704) and a protection plate (705); the fixed terminal (701), the movable terminal (702) and the pin (703) are combined into a rotating connection assembly; the end of the folding arm (704) is mounted on the periphery of the bracket (3) via the rotating connection assembly; the other end of the folding arm (704) is provided with a protrusion (706); There are a number of protective plates (705), and the protective plates (705) are connected to each other to form a curved C-shaped structure. A recessed portion (707) that cooperates with the protruding portion (706) is provided on the inner wall of the protective plate (705). The protective plate (705) is vertically connected to the folding arm (704) through the cooperation of the protruding portion (706) and the recessed portion (707).

2. The UAV crash protection device according to claim 1, characterized in that: The fixed terminal (701) is fixedly mounted on the curved surface of the bracket (3); the movable terminal (702) is fixedly connected to one end of the folding arm (704); the fixed terminal (701) is inserted into the middle of the movable terminal (702) and connected via a pin (703); and a damper is also provided on the rotating connection assembly.

3. The UAV crash protection device according to claim 2, characterized in that: The protective plate (705) has a trapezoidal structure, a limiting groove (708) is provided on the side wall of one end of the protective plate (705), and a limiting block (709) is provided on the side wall of the other end, and any two adjacent protective plates (705) are connected by snapping together via the limiting groove (708) and the limiting block (709).

4. The UAV crash protection device according to claim 1, characterized in that: The protruding portion (706) includes at least two rows of protruding pins, and the recessed portion (707) is correspondingly provided with two rows of sockets, and the sockets are respectively opened at the left and right ends of the protective plate (705), that is, the protruding portion (706) can connect two adjacent protective plates (705) at the same time.

5. The UAV crash protection device according to claim 4, characterized in that: The protrusion (706) is specifically composed of a plurality of latches, and the ends of the latches are provided with inwardly recessed blind holes (8). The end of the inner wall of the recess (707) is provided with a spherical locking ball (9) installed via a spring. When the protrusion (706) is inserted into the recess (707), the locking ball (9) is also locked into the blind hole (8).

6. The UAV crash protection device according to claim 2, characterized in that: The folding arm (704) can be rotated along the pin shaft (703), and the rotation angle range is between 0-90 degrees. When the rotation angle of the folding arm (704) is 0 degrees, the folding arm (704) is perpendicular to the bracket (3); when the rotation angle of the folding arm (704) is 90 degrees, the folding arm (704) is parallel to the bracket (3).

7. The UAV crash protection device according to claim 5, characterized in that: The length of the folding arm (704) is greater than the length of the blade of the flying paddle (6), wherein a plurality of the protective plates (705) surround and form a C-shaped structure to wrap the flying paddle (6).

8. The UAV crash protection device according to claim 3, characterized in that: A landing bracket is provided at the bottom of the machine body (1), and the landing bracket is connected to the machine body (1) via a buffer spring.

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