Multi-rotor training unmanned aerial vehicle

Abstract

The utility model relates to the field of unmanned aerial vehicles, and discloses a multi-rotor training unmanned aerial vehicle which comprises a center plate and a folding mechanism, a protective cover is detachably connected to the upper portion of the center plate, a battery bin is arranged under the center plate, racks are arranged on the two sides of the battery bin, the racks are fixedly connected with the lower portion of the center plate, and the folding mechanism is arranged on the center plate. One end of the rack is fixedly connected with a rack cross rod, a first folding arm is fixedly connected to the side wall of the center plate, and the first folding arm is connected with a second folding arm through a folding mechanism. The folding mechanism is provided with a button and an elastic element, mechanical locking can be formed while operation convenience is improved, the structural rigidity and stability of the folding arm during flight are ensured, accidental folding caused by vibration is avoided, flexible cable grooves are formed in the joints of the folding mechanism, telescopic wires are arranged in the folding arm, and the folding arm is convenient to fold. And excessive stretching or bending damage caused by folding of a traditional rigid line is avoided.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicles (UAVs), and more particularly to a multi-rotor training UAV. Background Technology

[0002] With the rapid development of drone technology, multi-spiral drones have been widely used in aviation education, skills training and other fields. These drones can provide students with an intuitive flight operation experience, help them master drone control technology, and play an important role in cultivating professional talents.

[0003] Existing multi-spiral drones still have structural design flaws. First, the folding mechanism is not reasonable enough, and its stability is insufficient during flight. Second, during folding, the internal wires are easily damaged by bending and pulling, which not only reduces the service life of the drone but also poses safety hazards. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-rotor training drone, which aims to improve the stability of the drone's folding mechanism and solve the problem of damage to internal wires during the folding process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-rotor training drone, comprising a center plate and a folding mechanism, wherein a protective cover is detachably connected to the top of the center plate, a battery compartment is provided directly below the center plate, and frames are provided on both sides of the battery compartment, and the frames are fixedly connected to the bottom of the center plate, a frame crossbar is fixedly connected to one end of the frame, and a first folding arm is fixedly connected to the side wall of the center plate, and the first folding arm is connected to a second folding arm through the folding mechanism;

[0006] The folding mechanism includes a fixed folding arm, a movable folding arm, a hinge seat, a hinge pin, a pin seat, a rotating pin, a button, an elastic element, and a folding buckle. The fixed folding arm and the movable folding arm are provided with matching hinge seats and are hinged together by hinge pins. A pin seat is provided on one symmetrical side of the hinge seat. The pin seat and the folding buckle on the fixed folding arm are hinged together by a rotating pin. A button is provided on the outer side of the pin seat on the movable folding arm, and an elastic element is elastically connected to the inner side.

[0007] As a further description of the above technical solution:

[0008] The crossbars of the frame are fitted with shock-absorbing cotton.

[0009] As a further description of the above technical solution:

[0010] The first folding arm has six sets, which are evenly distributed on the outer wall of the central plate.

[0011] As a further description of the above technical solution:

[0012] One end of the first folding arm is fixedly connected to the fixed folding arm cylinder, and one end of the second folding arm is fixedly connected to the movable folding arm cylinder.

[0013] As a further description of the above technical solution:

[0014] A GPS module is installed on the top of the central plate, and LED lights are installed on the side.

[0015] As a further description of the above technical solution:

[0016] The folding mechanism is provided with a flexible cable groove at the folding joint, and a retractable wire is provided inside the first folding arm.

[0017] As a further description of the above technical solution:

[0018] The retractable conductor adopts a helical spring structure and uses silicone wire.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, the buttons and elastic elements set in the folding mechanism can improve the convenience of operation. When the first folding arm and the second folding arm are in the unfolded state, they can form a mechanical lock to ensure the rigidity and stability of the folding arm structure during flight and avoid accidental folding caused by vibration.

[0021] 2. In this utility model, a flexible cable groove is provided at the joint of the folding mechanism, and a retractable wire is provided inside the folding arm. When the folding arm is unfolded or folded, the wire can freely extend and retract with the curvature of the cable groove, avoiding excessive stretching or bending damage to traditional rigid lines caused by folding. Attached Figure Description

[0022] Figure 1 A perspective view of a multi-rotor training drone proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the folding mechanism structure of a multi-rotor training drone proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of a flexible cable tray structure for a multi-rotor training drone proposed in this utility model.

[0025] Legend:

[0026] 1. Protective cover; 2. Center plate; 3. GPS module; 4. LED light group; 5. Battery compartment; 6. Frame crossbar; 7. Frame; 8. Shock-absorbing cotton; 9. First folding arm; 10. Second folding arm; 11. Fixed folding arm cylinder; 12. Movable folding arm cylinder; 13. Hinge seat; 14. Hinge pin; 15. Pin seat; 16. Rotating pin; 17. Button; 18. Elastic element; 19. Folding buckle; 20. Flexible cable tray; 21. Retractable wire. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Refer to Figure 1-2 A multi-rotor training drone includes a center plate and a folding mechanism. A protective cover 1 is detachably connected to the top of the center plate 2. A battery compartment 5 is located directly below the center plate 2. Frames 7 are located on both sides of the battery compartment 5 and are fixedly connected to the bottom of the center plate 2. A frame crossbar 6 is fixedly connected to one end of the frame 7. A first folding arm 9 is fixedly connected to the side wall of the center plate 2. The first folding arm 9 is connected to a second folding arm 10 through the folding mechanism.

[0029] The folding mechanism includes a fixed folding arm 11, a movable folding arm 12, a hinge seat 13, a hinge pin 14, a pin seat 15, a rotating pin 16, a button 17, an elastic element 18, and a folding buckle 19. The fixed folding arm 11 and the movable folding arm 12 are provided with matching hinge seats 13 and are hinged together by hinge pin 14. A pin seat 15 is provided on one side of the hinge seat 13. The pin seat 15 on the fixed folding arm 11 and the folding buckle 19 are hinged together by rotating pin 16. A button 17 is provided on the outside of the pin seat 15 on the movable folding arm 12, and an elastic element 18 is elastically connected on the inside.

[0030] The central plate 2 integrates a control unit to achieve overall control of the drone. The battery compartment 5 provides power to the drone body. When the central plate 2 is damaged and needs repair, the central plate protective cover 1 can be removed to repair the central plate 2. When the first folding arm 9 and the second folding arm 10 are in the unfolded state, the fixed folding arm tube 11 and the movable folding arm tube 12 are rotatably connected by the hinge seat 13 and the hinge pin 14. At this time, the elastic element 18 on the inner side of the pin seat 15 on the movable folding arm tube 12 is in a naturally extended state and abuts against the folding buckle 19. At the same time, the other end of the folding buckle 19 is tightly fastened to the pin seat 15 of the fixed folding arm tube 11 by the rotating pin 16, forming a mechanical lock to ensure the rigidity and stability of the folding arm structure during flight and to avoid accidental folding due to vibration.

[0031] Example 2: Refer to Figure 3 Shock-absorbing cotton 8 is fitted on the frame crossbar 6. The elastic deformation of the shock-absorbing cotton 8 absorbs external impacts such as motor vibration and airflow disturbance during flight, improving the flight stability of the drone in complex airflow environments and reducing the damage of vibration to the folding mechanism. The center plate 2 is equipped with a GPS module 3 and an LED light group 4, which are powered by the battery compartment 5. When using the drone, it can provide real-time location data of the drone and provide lighting for easy operation at night. A flexible cable groove 20 is set at the folding joint of the folding mechanism. A retractable wire 21 is set in the first folding arm 9. When the folding arm is unfolded or folded, the wire can freely extend and retract with the curvature of the cable groove, avoiding the damage caused by excessive stretching or bending of traditional rigid circuits due to folding. The retractable wire 21 uses silicone wire and adopts a helical spring structure, which has both flexibility and tensile strength, ensuring stable circuit signal transmission during folding and solving the pain point of easy damage to the circuit of traditional folding drones.

[0032] Working principle: When the first folding arm 9 and the second folding arm 10 are in the unfolded state, the fixed folding arm cylinder 11 and the movable folding arm cylinder 12 are rotatably connected by the hinge seat 13 and the hinge pin 14. At this time, the elastic element 18 on the inner side of the pin seat 15 on the movable folding arm cylinder 12 is in a naturally extended state and abuts against the folding buckle 19. At the same time, the other end of the folding buckle 19 is tightly fastened to the pin seat 15 of the fixed folding arm cylinder 11 by the rotating pin 16, forming a mechanical lock to ensure the rigidity and stability of the folding arm structure during flight and to avoid accidental folding due to vibration. When the drone needs to be folded, press the button 17 on the movable folding arm cylinder 12. The elastic element 18 overcomes the elastic force and moves inward, releasing the lock on the folding buckle 19. At this time, the fixed folding arm cylinder 11 and the movable folding arm cylinder 12 can rotate freely around the hinge pin 14 to realize the folding arm folding 90° or 180°.

[0033] Flexible cable channels are provided at the folding joints of the first folding arm 9 and the second folding arm 10, with retractable wires integrated inside. When the folding arm is unfolded or folded, the wires can freely extend and retract with the curvature of the cable channel, avoiding damage caused by excessive stretching or bending of traditional rigid circuits due to folding. The retractable wires 21 use silicone wires and adopt a spiral spring structure, which combines flexibility and tensile strength, ensuring stable circuit signal transmission during folding and solving the pain point of easy damage to the circuits of traditional folding drones.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-copter training drone comprising a central plate (2) and a folding mechanism, characterized in that: The upper of the center plate (2) is detachably connected with a protective cover (1), the lower of the center plate (2) is provided with a battery compartment (5), the two sides of the battery compartment (5) are provided with racks (7), and the racks (7) are fixedly connected with the lower of the center plate (2), one end of the rack (7) is fixedly connected with a rack cross rod (6), the sidewall of the center plate (2) is fixedly connected with a first folding arm (9), the first folding arm (9) is connected with a second folding arm (10) through a folding mechanism; The folding mechanism comprises a fixed folding arm barrel (11), a movable folding arm barrel (12), a hinge seat (13), a hinge pin (14), a pin seat (15), a rotating pin (16), a button (17), an elastic element (18) and a folding buckle (19), the fixed folding arm barrel (11) and the movable folding arm barrel (12) are provided with matched hinge seats (13) and are hingedly connected through hinge pins (14), the hinge seats (13) are provided with pin seats (15) on the symmetrical sides, the pin seat (15) and the folding buckle (19) on the fixed folding arm barrel (11) are hingedly connected through the rotating pin (16), the pin seat (15) on the movable folding arm barrel (12) is provided with the button (17) on the outer side, and the inner side is elastically connected with the elastic element (18).

2. The multi-copter training drone of claim 1, wherein: The rack cross rod (6) is sleeved with shock-absorbing cotton (8).

3. The multi-copter training drone of claim 1, wherein: The first folding arm (9) has six groups and is uniformly distributed on the outer wall of the center plate (2).

4. The multi-copter training drone of claim 1, wherein: One end of the first folding arm (9) is fixedly connected with the fixed folding arm barrel (11), and one end of the second folding arm (10) is fixedly connected with the movable folding arm barrel (12).

5. The multi-copter training drone of claim 1, wherein: The upper of the center plate (2) is provided with a GPS module (3), and the side is provided with an LED lamp group (4).

6. The multi-copter training drone of claim 1, wherein: The folding joint of the folding mechanism is provided with a flexible cable groove (20), and the first folding arm (9) is provided with a telescopic wire (21).

7. The multi-copter training drone of claim 6, wherein: The telescopic wire (21) adopts a spiral spring type structure.

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