Mooring unmanned aerial vehicle arm folding mechanism capable of being rapidly and automatically unfolded

Abstract

The utility model discloses a mooring unmanned aerial vehicle arm folding mechanism capable of being rapidly and automatically unfolded, and relates to the technical field of unmanned aerial vehicle design, the mooring unmanned aerial vehicle arm folding mechanism comprises an arm seat and an arm body, one end of the arm seat is provided with a mounting hole, an elastic limiting piece is mounted in the mounting hole, the lower end of the arm seat is provided with a mounting groove, and the mounting groove is provided with a clamping groove. One end of the arm body is rotatably connected to the interior of the mounting groove through a cylindrical pin, a torsional spring is mounted on the surface of the cylindrical pin and used for driving the arm body to unfold, and an insertion hole is formed in the end, close to the arm base, of the arm body. The connecting position of the arm seat and the arm body is connected through the cylindrical pin, the torsional spring is installed on the surface of the cylindrical pin, and the unfolded arm body is locked through the elastic limiting piece, so that the unmanned aerial vehicle reaches and meets the flight requirement, when the unmanned aerial vehicle is in a folded state, the torsional spring accumulates force to make preparation for unfolding, and the unmanned aerial vehicle can be unfolded. The storage area of the aircraft is greatly reduced, and the storage and portability of the aircraft are improved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) design technology, specifically to a folding mechanism for the arm of a tethered UAV that can be quickly and automatically deployed. Background Technology

[0002] Tethered drones, also known as tethered unmanned aerial vehicles (UAVs), are a special type of multi-rotor UAV. They use ground power transmitted through a tether cable as their power source, replacing traditional lithium batteries. Their most important feature is their ability to hover for extended periods.

[0003] Currently, most tethered drones take up a lot of space when stored and are inconvenient to carry. The extension and retraction of the arms are all done manually. When using the drone, it needs to be taken out of the storage box, the arms need to be extended and tightened manually before it can be put into working condition, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a folding mechanism for the arm of a tethered drone that can be quickly and automatically unfolded, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tethered drone arm folding mechanism that can be quickly and automatically deployed, comprising: an arm base and an arm body. One end of the arm base is provided with a mounting hole, and an elastic limiting member is installed inside the mounting hole. The lower end of the arm base is provided with a mounting groove. One end of the arm body is rotatably connected to the mounting groove via a cylindrical pin. A torsion spring is installed on the surface of the cylindrical pin, and the torsion spring is used to drive the arm body to unfold. One end of the arm body near the arm base is provided with an insertion hole. When the arm body is fully unfolded, the elastic limiting member engages with the insertion hole.

[0006] The elastic limiting element is a spring plunger, which is threaded into the mounting hole.

[0007] Optionally, a protrusion is provided at one end of the arm body near the arm base, and a limiting surface is provided at the end of the protrusion facing the arm base. When the arm body is extended into position, the limiting surface abuts against the end face of the arm base where the elastic limiting member is provided; the insertion hole is provided at the end of the protrusion facing the arm base.

[0008] Optionally, the spring plunger includes an installation tube and a limiting ring, a spring, and a limiting post disposed within the installation tube. The limiting ring is fixed to one end of the installation tube, the spring is near the other end of the installation tube, and the limiting post is slidably disposed between the spring and the limiting ring. The end of the limiting post away from the spring has a protrusion protruding from the limiting ring, and the protrusion engages with the insertion hole. The surface of the installation tube is threaded and threadedly connected to the installation hole.

[0009] Optionally, the protruding edge of the limiting post is provided with rounded corners.

[0010] Optionally, the two ends of the elastic spring are connected to the mounting tube and the limiting post, respectively.

[0011] Optionally, the diameter of the protrusion of the limiting post matches the diameter of the insertion hole.

[0012] Optionally, a contact groove is provided at one end of the arm body, and the two ends of the torsion spring are in contact with the contact groove and the mounting groove, respectively.

[0013] Optionally, the drone fuselage, four sets of motor propeller assemblies, and four tethered drone arm folding mechanisms that can be quickly and automatically deployed as described in any one of the claims; the arm bases of the four arm folding mechanisms are all connected to the drone fuselage, and the four arm folding mechanisms are evenly arranged in the circumferential direction of the drone fuselage; the four sets of motor propeller assemblies are respectively installed at one end of the arm body of the four arm folding mechanisms;

[0014] The arm folding mechanism is used to fold the arm body around the drone fuselage, or the arm folding mechanism is used to unfold the arm body to be perpendicular to the drone fuselage.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention relates to a tethered drone arm folding mechanism that can be quickly and automatically deployed. It uses a cylindrical pin to connect the arm base and the arm body, and a torsion spring is installed on the surface of the cylindrical pin. An elastic limiting component locks the deployed arm body, ensuring the drone meets flight requirements. In the folded state, the torsion spring stores energy to prepare for deployment, significantly reducing the drone's storage area and improving its storage and portability. Furthermore, the drone can be deployed and locked immediately after launch, enhancing its practicality and deployment flexibility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the connection between the arm base and the arm body of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Arm base; 2. Arm body; 3. Spring plunger; 4. Mounting hole; 5. Mounting groove; 6. Cylindrical pin; 7. Torsion spring; 8. Protrusion; 9. Insertion hole; 10. Rounded corner; 11. Contact groove; 12. Motor propeller assembly; 301. Mounting tube; 302. Limiting ring; 303. Spring spring; 304. Limiting post. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] like Figures 1 to 3 As shown, this embodiment of the tethered drone arm folding mechanism that can be quickly and automatically deployed includes an arm base 1 and an arm body 2. One end of the arm base 1 is provided with a mounting hole 4, inside which an elastic limiting member is installed. The elastic limiting member can be detached from the inside of the arm base 1 and is used to limit the arm body 2, thus fixing the arm after deployment. The lower end of the arm base 1 is provided with a mounting groove 5. One end of the arm body 2 is rotatably connected to the mounting groove 5 via a cylindrical pin 6. A torsion spring 7 is installed on the surface of the cylindrical pin 6. The torsion spring 7 is used to drive the arm body 2 to deploy. When the arm body 2 is in the folded and stowed state, the torsion spring 7 stores force to prepare for deployment. When the arm body 2 is in the deployed state, the torsion spring 7 is in its natural state. One end of the arm body 2 near the arm base 1 is provided with an insertion hole 9. When the arm body 2 is deployed to its final position, the elastic limiting member cooperates with the insertion hole 9 and is inserted into the insertion hole 9 via a spring post assembly, thus fixing the arm body 2.

[0023] The elastic limiting component is a spring plunger 3, which is threaded into the mounting hole 4. The spring plunger 3 can be disassembled for easy replacement.

[0024] Optionally, the arm body 2 is provided with a protrusion 8 at one end near the arm base 1. The end of the protrusion 8 facing the arm base 1 has a limiting surface. When the arm body 2 is extended into place, the limiting surface abuts against the end face of the arm base 1 with the elastic limiting member. The insertion hole 9 is provided at the end of the protrusion 8 facing the arm base 1, so that one end of the spring plunger 3 can enter and exit the insertion hole 9.

[0025] Optionally, the spring plunger 3 includes an installation tube 301 and a limiting ring 302, a spring 303, and a limiting post 304 disposed within the installation tube 301. The limiting ring 302 is fixed to one end of the installation tube 301, the spring 303 is near the other end of the installation tube 301, and the limiting post 304 is slidably disposed between the spring 303 and the limiting ring 302. The end of the limiting post 304 away from the spring 303 has a protrusion protruding from the limiting ring 302, which mates with the insertion hole 9. The surface of the installation tube 301 is threaded and threadedly connected to the installation hole 4. The spring 303 generates elastic force to push one end of the limiting post 304 out, thereby achieving the mating of one end of the limiting post 304 with the insertion hole 9. At the same time, the limiting post 304 can extend and retract under the action of the spring 303.

[0026] Optionally, the protruding edge of the limiting post 304 is provided with a rounded corner 10, which facilitates the insertion of the limiting post 304 into the socket 9.

[0027] Optionally, the two ends of the elastic spring 303 are connected to the mounting tube 301 and the limiting post 304 respectively. The elastic force generated by the elastic spring 303 makes it easy for one end of the limiting post 304 to be located outside the mounting tube 301.

[0028] Optionally, the diameter of the protrusion of the limiting post 304 matches the diameter of the socket 9. When the limiting post 304 is inserted into the socket 9, the arm body 2 will not wobble unexpectedly due to the gap between the limiting post 304 and the socket 9.

[0029] Optionally, a contact groove 11 is provided at one end of the arm body 2, and the two ends of the torsion spring 7 are in contact with the contact groove 11 and the mounting groove 5 respectively, so that the torsion spring 7 can be effectively twisted when the arm body 2 rotates.

[0030] Optionally, a tethered drone includes: a drone fuselage, four sets of motor propeller assemblies 12, and four tethered drone arm folding mechanisms that can be quickly and automatically deployed as claimed in any one of claims 1-8; the arm bases 1 of the four arm folding mechanisms are all connected to the drone fuselage, and the four arm folding mechanisms are evenly arranged in the circumferential direction of the drone fuselage; the four sets of motor propeller assemblies 12 are respectively installed at one end of the arm body 2 of the four arm folding mechanisms;

[0031] The arm folding mechanism is used to fold the arm body 2 around the drone fuselage, or the arm folding mechanism is used to unfold the arm body 2 to be perpendicular to the drone fuselage.

[0032] The usage method of this embodiment is as follows: When the arm body 2 is unfolded, the torsion spring 7 releases the force, and the torsion spring 7 drives the arm body 2 to unfold. During this process, the protrusion 8 presses the limiting post 304, and the limiting post 304 compresses the elastic spring 303. When the limiting post 304 is inserted into the insertion hole 9 inside the protrusion 8, the elastic spring 303 returns to its original state and generates elastic force, so that the limiting post 304 will not accidentally come out of the insertion hole 9, thereby fixing the unfolded arm body 2. When the arm body 2 needs to be folded and stored, the limiting post 304 is pushed by a tool to make the limiting post 304 slide out of the insertion hole 9, and then the arm body 2 is folded. The torsion spring 7 stores force to prepare for the next opening.

[0033] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific technical solutions and / or characteristics is not elaborated upon here. The conformal design details for inflatable wings proposed in this solution are just specific examples of fixing via ropes. It should be noted that those skilled in the art can adjust or improve the specific details of the solution without departing from the technical design concept of this utility model. For example, the percentage of the pull points along the spanwise direction and the number of pull points at different positions can be changed. This case applies inflatable wings to the conformal design of UAVs. This method can also be used in airships, high aspect ratio flexible aircraft, and other aircraft. These should also be included within the protection scope of this utility model, as they all fall under the effects achievable by this utility model. To reduce the additional drag caused by the surface attachments of the conformal design of inflatable wings, the components are treated with a rectifier to reduce drag. This solution should also be considered a technical extension of this utility model and should be protected.

[0034] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A folding mechanism for the arm of a tethered unmanned aerial vehicle that can be quickly and automatically deployed, characterized in that: include: The arm base (1) and the arm body (2) are provided. One end of the arm base (1) is provided with a mounting hole (4). An elastic limiting member is installed inside the mounting hole (4). The lower end of the arm base (1) is provided with a mounting groove (5). One end of the arm body (2) is rotatably connected to the mounting groove (5) through a cylindrical pin (6). A torsion spring (7) is installed on the surface of the cylindrical pin (6). The torsion spring (7) is used to drive the arm body (2) to unfold. The end of the arm body (2) near the arm base (1) is provided with a socket (9). When the arm body (2) is unfolded into place, the elastic limiting member cooperates with the socket (9).

2. The folding mechanism for the rapidly and automatically unfolding tethered UAV arm according to claim 1, characterized in that... ； The elastic limiting element is a spring plunger (3), which is threaded into the mounting hole (4).

3. The folding mechanism for the rapidly and automatically unfolding tethered drone arm according to claim 1, characterized in that... ； The arm body (2) has a protrusion (8) at one end near the arm base (1). The protrusion (8) has a limiting surface at one end facing the arm base (1). When the arm body (2) is extended into place, the limiting surface abuts against the end face of the arm base (1) where the elastic limiting member is located. The insertion hole (9) is located at one end of the protrusion (8) facing the arm base (1).

4. The folding mechanism for the rapidly and automatically unfolding tethered UAV arm according to claim 2, characterized in that... ； The spring plunger (3) includes an installation tube (301) and a limiting ring (302), a spring spring (303), and a limiting post (304) disposed in the installation tube (301). The limiting ring (302) is fixed to one end of the installation tube (301), the spring spring (303) is close to the other end of the installation tube (301), and the limiting post (304) is slidably disposed between the spring spring (303) and the limiting ring (302). The end of the limiting post (304) away from the spring spring (303) has a protrusion protruding from the limiting ring (302), and the protrusion cooperates with the insertion hole (9). The surface of the installation tube (301) is provided with threads and is threadedly connected to the installation hole (4).

5. The tethered drone arm folding mechanism capable of rapid and automatic deployment according to claim 4, characterized in that: The protruding edge of the limiting post (304) is provided with rounded corners (10).

6. The tethered drone arm folding mechanism capable of rapid and automatic deployment according to claim 4, characterized in that: The elastic spring (303) is connected at both ends to the mounting tube (301) and the limiting post (304).

7. The tethered drone arm folding mechanism capable of rapid and automatic deployment according to claim 4, characterized in that: The diameter of the protrusion of the limiting post (304) matches the diameter of the insertion hole (9).

8. The tethered drone arm folding mechanism capable of rapid and automatic deployment according to any one of claims 1-7, characterized in that: The arm body (2) has a contact groove (11) at one end, and the two ends of the torsion spring (7) are in contact with the contact groove (11) and the mounting groove (5) respectively.

9. A tethered unmanned aerial vehicle, characterized in that, include: The unmanned aerial vehicle (UAV) fuselage, four sets of motor propeller assemblies (12) and four tethered UAV arm folding mechanisms that can be quickly and automatically deployed as described in any one of claims 1-8; The arm bases (1) of the four arm folding mechanisms are all connected to the UAV fuselage, and the four arm folding mechanisms are evenly arranged in the circumferential direction of the UAV fuselage; the four sets of motor propeller assemblies (12) are respectively installed at one end of the arm body (2) of the four arm folding mechanisms; The arm folding mechanism is used to fold the arm body (2) around the drone fuselage, or the arm folding mechanism is used to unfold the arm body (2) to be perpendicular to the drone fuselage.

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