Multi-rotor unmanned aerial vehicle with protection function

Abstract

This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a multi-rotor UAV with protective functions. It includes a UAV body and a protective ring, with four arms symmetrically fixed to the outer wall of the UAV body. This utility model, through the protective ring and protective mesh frame surrounding the propeller blades, effectively protects the propeller blades from collisions with obstacles, significantly reducing the risk of damage. Furthermore, the protective ring and mesh frame feature a quick-release design. By simply pressing, the insert plate is inserted into the sleeve, the wedge-shaped locking block is squeezed outwards, and the spring is stretched. When the insert plate is fully inserted into the sleeve, the locking groove aligns with the wedge-shaped locking block. When the spring shortens, the wedge-shaped locking block is inserted into the locking groove, locking the insert plate and protective ring. This allows for quick installation of the protective ring. Similarly, the protective ring can be quickly removed by simply pulling out the sliding plate, greatly facilitating the inspection and maintenance of the propeller blades and brushless motor, and improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a multi-rotor UAV with protective functions. Background Technology

[0002] Multi-rotor drones are unmanned aerial vehicles with three or more rotor axes. They control their flight trajectory by adjusting different rotor speeds and have a fixed rotor collective pitch. Due to their flexibility, excellent hovering performance and vertical take-off and landing capabilities, multi-rotor drones have been widely used in aerial photography, agricultural plant protection, power line inspection, security patrol and other fields.

[0003] The propellers of some multi-rotor drones are exposed, and when flying in complex environments, such as in forests, inside buildings, or near other obstacles, the propellers are easily damaged by collisions, which not only affects flight safety but also increases the user's maintenance costs. Although some drones are equipped with protective rings, these rings are mostly fixed connection structures, which are cumbersome to disassemble and make it inconvenient to replace and maintain the propellers. Therefore, a multi-rotor drone with protective functions is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a multi-rotor drone with protective functions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A multi-rotor drone with protective functions, comprising a drone body and a protective ring. Four arms are symmetrically fixed to the outer wall of the drone body. A circular plate is fixedly connected to one end of each arm. A brushless motor is mounted on the upper surface of the circular plate. A helical blade is fixedly connected to one end of the output shaft of the brushless motor. Two connecting rods are symmetrically fixed to the outer wall of the circular plate. A sleeve is fixedly connected to the top of each connecting rod. A protective mesh frame is fixedly connected to the upper surface of the protective ring. Two insert plates are symmetrically fixed to the lower surface of the protective ring. The insert plates are inserted into the inner wall of the sleeves. A sliding plate is slidably connected to the outer wall of the sleeves. One end of the slide plate is fixedly connected to a wedge-shaped locking block, and the other end of the slide plate is glued with an elastic pull ring. A slot is opened at the bottom of the outer side wall of the insert plate. Two movable blocks are symmetrically fixedly connected to the outer side wall of the slide plate. A spring is fixedly connected between the movable blocks and the outer side wall of the insert. A hanging rod is fixedly connected to the bottom of the outer side wall of the insert. Two connecting mechanisms are symmetrically fixedly connected to the outer side wall of the drone body. A support rod is connected to the bottom end of the connecting mechanism. A square groove is opened on the lower surface of the support rod. A square rod is slidably connected to the inner side wall of the square groove. A spring is fixedly connected between the inner bottom wall of the square groove and the upper surface of the square rod. A support leg is fixedly connected to the bottom end of the square rod. A rubber pad is glued to the outer side wall of the support leg.

[0006] As a further preferred embodiment of this technical solution, both the protective ring and the protective mesh frame are made of carbon fiber material.

[0007] As a further preferred embodiment of this technical solution: the outer wall of the spring is coated with an anti-rust coating, and the elastic pull ring is made of thermoplastic polyurethane elastomer.

[0008] As a further preferred embodiment of this technical solution, the rubber pad is made of polyurethane rubber.

[0009] As a further preferred embodiment of this technical solution: the connecting mechanism includes a connecting seat, the top of which is fixedly connected to the outer side wall of the drone body, and a slot is provided on the lower surface of the connecting seat, with the top end of the support rod inserted into the inner side wall of the slot.

[0010] As a further preferred embodiment of this technical solution: the outer wall of the connecting seat is threaded with a locking pin, and the top of the outer wall of the support rod is provided with a locking hole.

[0011] As a further preferred embodiment of this technical solution: a knob is fixedly connected to one end of the locking pin.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a protective ring and protective mesh frame surrounding the spiral blade to protect it, effectively preventing damage from collisions with obstacles and significantly reducing the risk of damage. The protective ring and mesh frame feature a quick-release design; a simple press inserts the plate into the sleeve, causing the wedge-shaped locking block to move outwards and the spring to stretch. Once the plate is fully inside the sleeve, the slot aligns with the wedge-shaped locking block, and the spring shortens, causing the wedge-shaped locking block to insert into the slot, locking the plate and protective ring in place. This allows for quick installation of the protective ring. Similarly, simply pulling out the sliding plate allows for quick removal, greatly facilitating the inspection and maintenance of the spiral blade and brushless motor, improving maintenance efficiency. During drone landing, the impact force is effectively absorbed and dissipated through the rubber pad and spring in the support rod, ensuring the drone's stability and reducing the risk of equipment damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a bottom view of the structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the insert in this utility model;

[0017] Figure 4 In this utility model Figure 3 Enlarged view of the structure of area A;

[0018] Figure 5 This is a schematic diagram of the circular plate and connecting rod in this utility model;

[0019] Figure 6 In this utility model Figure 5 Enlarged view of the structure of area B;

[0020] Figure 7 This is a schematic diagram of the structure of the protective ring and the protective mesh frame in this utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the sliding plate and the wedge-shaped block in this utility model;

[0022] Figure 9 This is a cross-sectional view of the support rod in this utility model;

[0023] Figure 10 In this utility model Figure 9 Enlarged view of the C-region structure;

[0024] Figure 11 This is a schematic diagram of the connecting seat and slot in this utility model;

[0025] Figure 12 This is a schematic diagram of the support rod and locking hole in this utility model.

[0026] In the picture:

[0027] 1. Drone body; 2. Arm; 3. Circular plate; 4. Brushless motor; 5. Propeller blade; 6. Connecting rod; 7. Sleeve; 8. Protective ring; 9. Insert plate; 10. Slide plate; 11. Wedge-shaped locking block; 12. Slot; 13. Movable block; 14. Spring 1; 15. Elastic pull ring; 16. Hanging rod; 17. Connecting mechanism; 18. Support rod; 19. Square groove; 20. Square rod; 21. Support leg; 22. Spring 2; 23. Rubber pad; 24. Protective net frame;

[0028] 171. Connector; 172. Slot; 173. Locking pin; 174. Locking hole; 175. Knob. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] Please see Figure 1-12This utility model provides a technical solution: a multi-rotor drone with protective function, including a drone body 1 and a protective ring 8. Four arms 2 are symmetrically fixed on the outer side wall of the drone body 1. A circular plate 3 is fixedly connected to one end of each arm 2. A brushless motor 4 is mounted on the upper surface of the circular plate 3. A spiral blade 5 is fixedly connected to one end of the output shaft of the brushless motor 4. Two connecting rods 6 are symmetrically fixedly connected to the outer side wall of the circular plate 3. A sleeve 7 is fixedly connected to the top of the connecting rod 6. A protective net frame 24 is fixedly connected to the upper surface of the protective ring 8. Two insert plates 9 are symmetrically fixedly connected to the lower surface of the protective ring 8. The insert plates 9 are inserted into the sleeves. The inner wall of sleeve 7 and the outer wall of insert sleeve 7 are slidably connected to a slide plate 10. One end of the slide plate 10 is fixedly connected to a wedge-shaped locking block 11, and the other end of the slide plate 10 is glued to an elastic pull ring 15. The bottom of the outer wall of insert plate 9 is provided with a slot 12. Two movable blocks 13 are symmetrically fixedly connected to the outer wall of slide plate 10. A spring 14 is fixedly connected between the movable block 13 and the outer wall of insert sleeve 7. A hanging rod 16 is fixedly connected to the bottom of the outer wall of insert sleeve 7. Two connecting mechanisms 17 are symmetrically fixedly connected to the outer wall of UAV body 1. The bottom end of the connecting mechanism 17 is connected to a support rod 18. The lower surface of the support rod 18 is provided with a square groove 1. 9. A square rod 20 is slidably connected to the inner wall of the square groove 19. A spring 22 is fixedly connected between the inner bottom wall of the square groove 19 and the upper surface of the square rod 20. A support leg 21 is fixedly connected to the bottom end of the square rod 20. A rubber pad 23 is adhered to the outer wall of the support leg 21. The protective ring 8 is located around the spiral blade 5. By setting the protective ring 8 and the protective mesh frame 24 around the spiral blade 5, the spiral blade 5 can be protected, effectively avoiding collision damage between the spiral blade 5 and obstacles, greatly reducing the risk of damage to the spiral blade 5. Moreover, the protective ring 8 and the protective mesh frame 24 adopt a quick-release design. By simply pressing, the insert plate 9 is inserted into the insert sleeve 7. When the wedge-shaped block 11 is squeezed outward, the spring 14 is stretched until the insert plate 9 is fully inserted into the insert sleeve 7. The slot 12 is opposite to the wedge-shaped block 11. The spring 14 shortens and drives the wedge-shaped block 11 to insert into the slot 12, which can lock the insert plate 9 and the protective ring 8. The protective ring 8 can be quickly installed. Similarly, the protective ring 8 can be quickly removed by simply pulling out the slide plate 10. This greatly facilitates the inspection and maintenance of the propeller blade 5 and the brushless motor 4, and improves maintenance efficiency. When the drone lands, the impact force is effectively absorbed and dissipated through the rubber pad 23 and the spring 22 in the support rod 18, ensuring the stability of the fuselage and reducing the risk of equipment damage.

[0032] In this embodiment, specifically: the protective ring 8 and the protective mesh frame 24 are both made of carbon fiber material; the protective ring 8 and the protective mesh frame 24 made of carbon fiber material have the characteristics of high strength and lightweight, which can not only ensure structural strength, but also reduce the overall weight of the drone and improve its endurance.

[0033] In this embodiment, specifically: the outer wall of spring 14 is coated with an anti-rust coating, and the elastic pull ring 15 is made of thermoplastic polyurethane elastomer; the anti-rust coating improves the anti-rust ability of spring 14 and helps to resist rainwater erosion; the elastic pull ring 15 made of polyurethane elastomer has good elasticity and mechanical properties, which improves durability; when removing the protective ring 8, pull the elastic pull ring 15 to put it on the hanging rod 16, so that the wedge-shaped locking block 11 is kept away from the locking groove 12, without having to pull the elastic pull ring 15 by hand, making the disassembly operation more convenient.

[0034] In this embodiment, specifically: the rubber pad 23 is made of polyurethane rubber; the polyurethane rubber material ensures the wear resistance and anti-slip performance of the rubber pad 23, which can improve the support stability of the support leg 21 and extend the service life of the rubber pad 23.

[0035] In this embodiment, specifically: the connecting mechanism 17 includes a connecting seat 171, the top of which is fixedly connected to the outer side wall of the drone body 1, and a slot 172 is provided on the lower surface of the connecting seat 171. The top end of the support rod 18 is inserted into the inner side wall of the slot 172, which facilitates the insertion between the support rod 18 and the connecting seat 171.

[0036] In this embodiment, specifically: a locking pin 173 is threaded onto the outer wall of the connecting seat 171, and a locking hole 174 is provided on the top of the outer wall of the support rod 18; tightening the locking pin 173 to insert it into the locking hole 174 can lock the support rod 18, while unscrewing the locking pin 173 can pull out the support rod 18 and separate it from the drone body 1, making it convenient to transport and move.

[0037] In this embodiment, specifically: a knob 175 is fixedly connected to one end of the locking pin 173; this facilitates the rotation of the locking pin 173.

[0038] The working principle of this utility model is as follows: the protective ring 8 and protective mesh frame 24 set around the spiral blade 5 can protect the spiral blade 5, effectively preventing the spiral blade 5 from colliding with obstacles and causing damage, greatly reducing the risk of damage to the spiral blade 5. The protective ring 8 and protective mesh frame 24 adopt a quick-release design. By simply pressing, the insert plate 9 is inserted into the insert sleeve 7, the wedge-shaped block 11 is squeezed outward, and the spring 14 is stretched. When the insert plate 9 is fully inserted into the insert sleeve 7, the slot 12 is opposite to the wedge-shaped block 11. The spring 14 shortens and drives the wedge-shaped block 11 to insert into the slot 12, which can lock the insert plate 9 and the protective ring 8, and complete the quick installation of the protective ring 8. Similarly, the protective ring 8 can be quickly removed by simply pulling out the slide plate 10, which greatly facilitates the inspection and maintenance of the spiral blade 5 and the brushless motor 4 and improves maintenance efficiency. When the drone lands, the impact force is effectively absorbed and dissipated through the rubber pad 23 and the spring 22 in the support rod 18, ensuring the stability of the fuselage and reducing the risk of equipment damage.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-rotor unmanned aerial vehicle with protective functions, characterized in that: The device includes a drone body (1) and a protective ring (8). Four arms (2) are symmetrically fixed on the outer wall of the drone body (1). A circular plate (3) is fixedly connected to one end of each arm (2). A brushless motor (4) is installed on the upper surface of the circular plate (3). A spiral blade (5) is fixedly connected to one end of the output shaft of the brushless motor (4). Two connecting rods (6) are symmetrically fixedly connected to the outer wall of the circular plate (3). A sleeve (7) is fixedly connected to the top of each connecting rod (6). A protective net frame (24) is fixedly connected to the upper surface of the protective ring (8). Two insert plates (9) are symmetrically fixedly connected to the lower surface of the protective ring (8). The insert plates (9) are inserted into the inner wall of the sleeve (7). A sliding plate (10) is slidably connected to the outer wall of the sleeve (7). A wedge-shaped block (11) is fixedly connected to one end of the sliding plate (10). An elastic pull ring is glued to the other end of the sliding plate (10). (15) A slot (12) is provided at the bottom of the outer side wall of the insert plate (9). Two movable blocks (13) are symmetrically fixedly connected to the outer side wall of the slide plate (10). A spring (14) is fixedly connected between the movable block (13) and the outer side wall of the insert sleeve (7). A hanging rod (16) is fixedly connected to the bottom of the outer side wall of the insert sleeve (7). Two connecting mechanisms (17) are symmetrically fixedly connected to the outer side wall of the drone body (1). A support rod (18) is connected to the bottom end of the connecting mechanism (17). A square groove (19) is provided on the lower surface of the support rod (18). A square rod (20) is slidably connected to the inner side wall of the square groove (19). A spring (22) is fixedly connected between the inner bottom wall of the square groove (19) and the upper surface of the square rod (20). A support leg (21) is fixedly connected to the bottom end of the square rod (20). A rubber pad (23) is adhered to the outer side wall of the support leg (21).

2. The multi-rotor UAV with protective function according to claim 1, characterized in that: Both the protective ring (8) and the protective mesh frame (24) are made of carbon fiber.

3. The multi-rotor UAV with protective function according to claim 2, characterized in that: The outer wall of the spring (14) is coated with an anti-rust coating, and the elastic pull ring (15) is made of thermoplastic polyurethane elastomer.

4. The multi-rotor UAV with protective function according to claim 3, characterized in that: The rubber pad (23) is made of polyurethane rubber.

5. The multi-rotor UAV with protective function according to claim 4, characterized in that: The connecting mechanism (17) includes a connecting seat (171), the top of which is fixedly connected to the outer wall of the UAV body (1), and a slot (172) is provided on the lower surface of the connecting seat (171), and the top of the support rod (18) is inserted into the inner wall of the slot (172).

6. The multi-rotor UAV with protective function according to claim 5, characterized in that: The outer side wall of the connecting seat (171) is threaded with a locking pin (173), and the top of the outer side wall of the support rod (18) is provided with a locking hole (174).

7. The multi-rotor UAV with protective function according to claim 6, characterized in that: A knob (175) is fixedly connected to one end of the locking pin (173).

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