Connection device and unmanned aerial vehicle

Abstract

This invention relates to the field of unmanned aerial vehicle (UAV) technology and discloses a connecting device comprising a first connector and a second connector. The first connector includes a base and a floating assembly. The floating assembly includes an inner rotating ring and an outer rotating ring, with the outer rotating ring buoyantly connected to the inner rotating ring. The floating assembly is rotatably connected to the base, and the inner rotating ring has a locking part. The second connector includes a locking element with a positioning hole, and the base has a positioning pin that mates with the positioning hole. When using the connecting device, the positioning pin is first inserted into the positioning hole, and then the outer rotating ring is rotated. As the outer rotating ring rotates, the floating assembly is compressed. When the locking part rotates with the outer rotating ring until it locks with the locking element, the floating assembly returns to its original state. Under the action of the floating assembly, the outer rotating ring is secured to the base, thereby achieving convenient assembly between the UAV frame and the load platform. Simultaneously, this invention also provides a corresponding UAV.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a connection device and a UAV. Background Technology

[0002] As drone technology matures and improves, the number of payload platforms it carries is also increasing, such as gimbals, loudspeakers, lights, and bomb dispensers. The drone's frame is connected to each payload platform via a connector. Due to the increasingly widespread application of drones, it is necessary to frequently switch between various payload platforms, which requires the connector to be quick and easy to assemble. Currently, existing connectors generally fix the payload platform to the drone's frame with screws, which requires tools when switching payload platforms, making assembly inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a connection device and a drone that enables convenient assembly between the drone's frame and the payload platform.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a connecting device, including a first connector and a second connector;

[0005] The first connector includes a base and a floating assembly. The floating assembly includes an inner rotating ring and an outer rotating ring. The outer rotating ring is buoyantly connected to the inner rotating ring, and the floating assembly is rotatably connected to the base.

[0006] The inner rotating ring is provided with a snap fastener, and the second connector includes a snap fastener with a positioning hole. The base is provided with a positioning pin that mates with the positioning hole. When the positioning pin is inserted into the positioning hole, the snap fastener rotates with the outer rotating ring until it locks with the snap fastener. When the outer rotating ring rotates, the floating component is compressed. When the snap fastener is locked with the snap fastener, the floating component returns to its original state, and the outer rotating ring is secured to the base.

[0007] The base is used to connect to one of the drone frame and the payload platform, and the second connector is used to connect to the other of the drone frame and the payload platform.

[0008] As a preferred embodiment, the floating component further includes at least one elastic element, one end of which is connected to the inner rotating ring, and the other end of which is connected to the outer rotating ring.

[0009] As a preferred embodiment, the number of elastic elements is multiple, and the multiple elastic elements are equidistantly distributed between the inner rotating ring and the outer rotating ring.

[0010] As a preferred embodiment, the base includes a mounting base and a connecting ring, the mounting base being used to connect to one of the frame and the load platform, and the locating pin being disposed on the connecting ring;

[0011] The inner rotating ring has a first opening, and the outer rotating ring has a second opening. The first opening and the second opening are arranged opposite to each other. The connecting ring passes through the first opening and the second opening in sequence and is connected to the mounting base. The bottom of the mounting base has a first groove, and the top of the outer rotating ring has a protrusion. When the swivel part is locked with the swivel member, the protrusion is locked on the first groove.

[0012] As a preferred embodiment, the bottom of the mounting base is further provided with a second groove and a guide groove. The second groove communicates with the guide groove, and the guide groove is located between the first groove and the second groove. The depth of the guide groove decreases from the second groove towards the first groove. When the swivel part is locked with the swivel member, the protrusion can rotate from the second groove along the guide groove to the first groove. When the swivel part is unlocked from the swivel member, the protrusion can rotate from the first groove along the guide groove to the second groove.

[0013] As a preferred embodiment, the depth of the guide groove gradually decreases smoothly from the second groove toward the first groove.

[0014] As a preferred embodiment, the inner rotating ring is provided with a limiting groove, and the connecting ring is provided with a limiting part. When the swivel part is locked with the swivel member, the limiting part can rotate with the connecting ring to abut against one end of the limiting groove. When the swivel part is unlocked from the swivel member, the limiting part can rotate with the connecting ring to abut against the other end of the limiting groove.

[0015] As a preferred embodiment, the connecting device further includes a sealing gasket, the first end face of which is connected to the connecting ring. When the swivel part is locked with the swivel member, the swivel member presses against the second end face of the sealing gasket.

[0016] As a preferred embodiment, the first connector further includes a first circuit board with a first electrical interface, and the second connector further includes a second circuit board with a second electrical interface, wherein the first electrical interface matches the second electrical interface; the first circuit board is connected to the base, and the second circuit board is connected to the swivel fastener; when the positioning pin is inserted into the positioning hole, the first electrical interface and the second electrical interface are electrically connected.

[0017] To address the same technical problem, embodiments of the present invention also provide a drone, including a drone frame, a payload platform, and the aforementioned connection device.

[0018] Compared to existing technologies, the beneficial effects of this invention are as follows: This invention provides a connecting device including a first connector and a second connector. The first connector includes a base and a floating assembly. The floating assembly includes an inner rotating ring and an outer rotating ring. The outer rotating ring is floatingly connected to the inner rotating ring, and the floating assembly is rotatably connected to the base. The inner rotating ring has a locking part. The second connector includes a locking element with a positioning hole. The base has a positioning pin that mates with the positioning hole. When using the connecting device, the positioning pin is first inserted into the positioning hole, and then the outer rotating ring is rotated. As the outer rotating ring rotates, the floating assembly is compressed. When the locking part rotates with the rotation of the outer rotating ring until it locks with the locking element, the floating assembly returns to its original state. Under the action of the floating assembly, the outer rotating ring is locked onto the base, thereby locking the first connector and the second connector, thus enabling convenient assembly between the UAV frame and the load platform. Simultaneously, this invention also provides a corresponding UAV. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection device in an embodiment of the present invention;

[0020] Figure 2 This is an assembly diagram of the drone frame, connecting device, and load platform in an embodiment of the present invention;

[0021] Figure 3 This is an assembly diagram of the drone frame and the first connector in an embodiment of the present invention;

[0022] Figure 4 This is an assembly diagram of the load platform and the second connector in an embodiment of the present invention;

[0023] Figure 5 This is an exploded view of the first connector in an embodiment of the present invention;

[0024] Figure 6 This is an exploded view of the second connector in an embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional view of the connecting device in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the inner rotating ring in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the screw fastener in an embodiment of the present invention;

[0028] Figure 10This is a schematic diagram of the mounting base in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the outer rotating ring in an embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the assembly of the connecting ring and the inner rotating ring in an embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of the connecting ring structure in an embodiment of the present invention;

[0032] Among them, 1. First connector;

[0033] 11. Base; 111. Mounting base; 1111. First groove; 1112. Second groove; 1113. Guide groove; 112. Connecting ring; 1121. Positioning pin; 1122. Limiting part;

[0034] 12. Inner swivel ring; 121. Turning part; 122. Mounting post; 123. Limiting groove;

[0035] 13. Outer swivel ring; 131. Protrusion; 14. Elastic element; 15. Sealing gasket; 16. First circuit board; 17. Sealing ring; 18. Cover plate; 191. Connecting screw; 192. Countersunk screw; 193. Screw;

[0036] 2. Second connector; 21. Thrust fastener; 211. Positioning hole; 22. Second circuit board; 23. Connecting plate;

[0037] 24. Sealing ring; 25. Sealing ring; 26. Countersunk screw; 27. Screw; 28. Screw; 29. ​​End cap;

[0038] 3. Load platform; 4. UAV frame. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Combination Figures 1 to 9 as well as Figure 13 As shown, the connecting device in this embodiment of the invention includes a first connector and a second connector 2;

[0041] The first connector includes a base 11 and a floating component. The floating component includes an inner rotating ring 12 and an outer rotating ring 13. The outer rotating ring 13 is buoyantly connected to the inner rotating ring 12, and the floating component is rotatably connected to the base 11.

[0042] The inner rotating ring 12 is provided with a snap fastener 121, and the second connector 2 includes a snap fastener 21. The snap fastener 21 is provided with a positioning hole 211, and the base 11 is provided with a positioning pin 1121 that cooperates with the positioning hole 211. When the positioning pin 1121 is inserted into the positioning hole 211, the snap fastener 121 can rotate with the rotation of the outer rotating ring 13 to lock with the snap fastener 21. When the outer rotating ring 13 rotates, the floating component is compressed. When the snap fastener 121 is locked with the snap fastener 21, the floating component returns to its original state, and the outer rotating ring 13 is locked on the base 11.

[0043] The base 11 is used to connect to one of the drone frame 4 and the load platform 3, and the second connector 2 is used to connect to the other of the drone frame 4 and the load platform 3.

[0044] In this embodiment of the invention, when using the connecting device, the positioning pin 1121 is first inserted into the positioning hole 211, and then the outer rotating ring 13 is rotated. As the outer rotating ring 13 rotates, the floating component is compressed. When the swivel part 121 rotates with the outer rotating ring 13 until it locks with the swivel member 21, the floating component returns to its original state. Under the action of the floating component, the outer rotating ring 13 is locked onto the base 11, thereby locking the first connector and the second connector 2, thus enabling convenient assembly between the drone frame and the load platform 3. Furthermore, when it is necessary to remove the load platform 3 from the drone frame 4, simply rotate the outer rotating ring 13 in the opposite direction to unlock the swivel part 121 from the swivel member 21, thereby unlocking the first connector and the second connector 2. In specific implementations, to facilitate user operation, unlocking and unlocking indicators can be provided on the connecting device.

[0045] In this embodiment of the invention, the load platform 3 can be configured according to actual usage requirements, such as a gimbal, megaphone, illuminator, bomb launcher, etc. It should be noted that the load platform 3 and drone frame 4 in the accompanying drawings of this embodiment are only partial structures of the actual product, not complete structures. Of course, the actual load platform 3 and drone frame 4 can also be other structures, not limited to those shown in the drawings. In specific implementations, for ease of installation, the first connector and drone frame 4 can be fixed with screws 193, and the second connector and load platform 3 can be fixed with screws 28. Of course, other connection methods can also be used between the first connector and drone frame 4, and between the second connector and load platform 3, depending on actual usage requirements; these will not be elaborated further here.

[0046] In practical applications, drones are easily affected by factors such as wind and sway in the air. In existing technologies, the load platform 3 is typically fixed to the drone's frame with screws. Therefore, when the drone sways due to wind or other factors, uneven stress occurs at the connection between the drone and the load platform 3, making the connection prone to deformation, and even causing the screws to come loose under stress. In this embodiment of the invention, a floating component is incorporated. When the drone sways due to wind or other factors in the air, the floating component acts as a buffer, ensuring a reliable connection between the drone and the load platform 3 and preventing deformation.

[0047] Combination Figure 5 and Figure 7As shown, in an optional embodiment, the floating assembly further includes at least one elastic element 14, one end of which is connected to the inner rotating ring 12, and the other end of which is connected to the outer rotating ring 13. By providing the elastic element 14 between the inner rotating ring 12 and the outer rotating ring 13, it is convenient to achieve a floating connection of the outer rotating ring 13 to the inner rotating ring 12. When using the connecting device, the positioning pin 1121 is first inserted into the positioning hole 211, and then the outer rotating ring 13 is rotated. During the rotation, the elastic element 14 is compressed. When the snap fastener 121 rotates with the rotation of the outer rotating ring 13 to lock with the snap fastener 21, the elastic element 14 returns to its original state, and the outer rotating ring 13 is locked onto the base 11 under the action of the elastic element 14, thereby achieving the locking of the first connector and the second connector 2, and thus enabling convenient assembly between the UAV frame and the load platform 3. It should be noted that the number of elastic elements 14 can be set according to actual usage requirements, such as 1, 2, 3, 4, etc. For example, when there is 1 elastic element 14, one end of the elastic element 14 can be sleeved on the inner rotating ring 12, and the other end can abut against the outer rotating ring 13.

[0048] Combination Figure 5 , Figure 7 , Figure 8 and Figure 12 As shown, to facilitate the installation and fixation of the elastic element 14, the inner rotating ring 12 in this embodiment is provided with at least one mounting post 122, and the outer rotating ring 13 is provided with at least one mounting groove. One end of the elastic element 14 is sleeved on the mounting post 122, and the other end of the elastic element 14 abuts against the mounting groove. At least one elastic element 14, at least one mounting post 122, and at least one mounting groove are in a one-to-one correspondence. Of course, in specific implementations, other methods can also be used to install and fix the elastic element 14, such as providing a mounting groove on the inner rotating ring 12 and a mounting post on the outer rotating ring 13, or providing mounting grooves on both the inner rotating ring 12 and the outer rotating ring 13 to fix the elastic element 14, etc., which will not be elaborated further here.

[0049] In one optional embodiment, the number of elastic elements 14 is multiple, and the multiple elastic elements 14 are equidistantly distributed between the inner rotating ring 12 and the outer rotating ring 13. By setting multiple elastic elements 14 equidistantly distributed between the inner rotating ring 12 and the outer rotating ring 13, the force on the outer rotating ring 13 and the inner rotating ring 12 is relatively uniform when the outer rotating ring 13 floats, thereby enabling stable assembly. After assembly, the force on the outer rotating ring 13 and the inner rotating ring 12 remains relatively uniform, resulting in a more stable structure and providing anti-loosening and vibration-resistant effects. Of course, in actual use, the multiple elastic elements 14 can also be distributed unequally between the inner rotating ring 12 and the outer rotating ring 13. Furthermore, the number and distribution distance of the elastic elements 14 can be set according to actual usage requirements, which will not be elaborated further here.

[0050] Combination Figure 5 , Figure 7 , Figures 10 to 13 As shown, in an optional embodiment, the base 11 includes a mounting base 111 and a connecting ring 112. The mounting base 111 is used to connect to one of the frame and the load platform 3, and the positioning pin 1121 is provided on the connecting ring 112.

[0051] The inner rotating ring 12 has a first opening, and the outer rotating ring 13 has a second opening. The first opening and the second opening are arranged opposite to each other. The connecting ring 112 passes through the first opening and the second opening in sequence and is connected to the mounting base 111. The bottom of the mounting base 111 has a first groove 1111, and the top of the outer rotating ring 13 has a protrusion 131. When the swivel part 121 is locked with the swivel member 21, the protrusion 131 is locked on the first groove 1111.

[0052] In this embodiment of the invention, when using the connecting device, the positioning pin 1121 is first inserted into the positioning hole 211, and then the outer rotating ring 13 is rotated. When the outer rotating ring 13 rotates, the floating component is compressed. When the snap fastener 121 rotates with the rotation of the outer rotating ring 13 to lock with the snap fastener 21, the floating component returns to its original state. Under the action of the floating component, the protrusion 131 at the top of the outer rotating ring 13 is locked onto the first groove 1111 of the mounting base 111, for example, by inserting into the first groove 1111 of the mounting base 111, thereby achieving the locking of the first connector and the second connector 2, and thus enabling convenient assembly between the frame of the UAV and the load platform 3.

[0053] Combination Figure 10 and Figure 11As shown, in an optional embodiment, the bottom of the mounting base 111 is further provided with a second groove 1112 and a guide groove 1113. The second groove 1112 communicates with the guide groove 1113, and the guide groove 1113 is located between the first groove 1111 and the second groove 1112. The depth of the guide groove 1113 decreases from the second groove 1112 towards the first groove 1111. When the throttle part 121 is locked with the throttle member 21, the protrusion 131 can rotate from the second groove 1112 along the guide groove 1113 to the first groove 1111. When the throttle part 121 is unlocked from the throttle member 21, the protrusion 131 can rotate from the first groove 1111 along the guide groove 1113 to the second groove 1112. By setting the second groove 1112 and the guide groove 1113, the assembly process is made smoother, which is beneficial for users to install and disassemble smoothly.

[0054] Please see Figure 10 As shown, in an optional embodiment, the depth of the guide groove 1113 gradually decreases from the second groove 1112 toward the first groove 1111, so that the floating component can be compressed smoothly, thereby smoothly engaging the protrusion 131 on the top of the outer rotating ring 13 into the first groove 1111 of the mounting base 111. At the same time, the user can feel the pressure gradually increasing rather than abruptly, which helps to improve the user's experience.

[0055] Please see Figure 12 As shown, in one optional embodiment, the inner rotating ring 12 is provided with a limiting groove 123, and the connecting ring 112 is provided with a limiting part 1122. When the buckle part 121 is locked with the buckle member 21, the limiting part 1122 can rotate with the connecting ring 112 to abut against one end of the limiting groove 123. When the buckle part 121 is unlocked from the buckle member 21, the limiting part 1122 can rotate with the connecting ring 112 to abut against the other end of the limiting groove 123. By setting a limiting structure, the rotation position of the floating component can be further limited. When the first connector locks the second connector 2 (that is, when the swivel part 121 is locked with the swivel member 21), the limiting part 1122 on the connecting ring 112 rotates to abut against one end of the limiting groove 123. When the first connector unlocks from the second connector 2 (that is, when the swivel part 121 unlocks from the swivel member 21), the limiting part 1122 on the connecting ring 112 rotates to abut against the other end of the limiting groove 123, thereby achieving limiting and making unlocking and locking more reliable.

[0056] Combination Figure 5 and Figure 7As shown, in an optional embodiment, the connecting device further includes a sealing gasket 15. The first end face of the sealing gasket 15 is connected to the connecting ring 112. When the screw fastener 121 is locked with the screw fastener 21, the screw fastener 21 presses against the second end face of the sealing gasket 15. In a specific implementation, a sealing groove for accommodating the sealing gasket 15 can also be provided on the connecting ring 112. When the first connector 2 is locked to the second connector 2, the top of the second connector 2 will press against the sealing gasket 15 on the first connector 2, thereby eliminating the connection gap between the first connector 2 and the second connector 2, that is, eliminating the assembly gap and providing dustproof and waterproof effects.

[0057] In specific implementation, in order to further improve the dustproof and waterproof effect of the connecting device and eliminate assembly gaps, sealing rings can also be set between other components. For example, a sealing ring 17 can be set between the 111 mounting base and the connecting ring 112, a sealing ring 24 can be set between the buckle 21 and the connecting plate 23, and a sealing ring 25 can be set between the connecting plate 23 and the load platform 3. Further details are not provided here.

[0058] Combination Figure 6 and Figure 7 As shown, in an optional embodiment, in order to facilitate the fixed connection between the load platform 3 and the second connector 2, the second connector 2 in this embodiment further includes a connecting plate 23, the screw fastener 21 is fixedly connected to the connecting plate 23, and the load platform 3 is fixedly connected to the connecting plate 23.

[0059] Combination Figures 5 to 7As shown, in an optional embodiment, the first connector further includes a first circuit board 16 with a first electrical interface, and the second connector 2 further includes a second circuit board 22 with a second electrical interface. The first electrical interface matches the second electrical interface. The first circuit board 16 is connected to the base 11, and the second circuit board 22 is connected to the snap fastener 21. When the positioning pin 1121 is inserted into the positioning hole 211, the first electrical interface and the second electrical interface are electrically connected. Exemplarily, the first circuit board 16 can be fixed to the connecting ring 112 by a connecting screw 191. Furthermore, to further secure the first circuit board 16, a cover plate 18 can be provided, with the first circuit board 16 connected to the cover plate 18. The cover plate 18 is fixedly connected to the connecting ring 112 by a countersunk screw 192. Exemplarily, the second circuit board 22 can be fixed to the snap fastener 21 by a connecting screw 27. In addition, to further secure the second circuit board 22, an end cap 29 can be provided, on which the second circuit board 29 is connected. The end cap 29 is fixedly connected to the swivel fastener 21 by countersunk screws 26.

[0060] In this embodiment of the invention, when the first connector and the second connector 2 are structurally locked, the first circuit board 16 of the first connector and the second circuit board 22 of the second connector 2 can be electrically connected, thereby realizing the connection between the UAV and the load platform 3 in terms of structure and circuit, which can facilitate power supply or data transmission between the two. For example, it can facilitate the UAV to supply power or control the load platform 3, or the load platform 3 to transmit data to the UAV.

[0061] Accordingly, this embodiment of the invention also provides a drone, which includes a drone frame 4, a load platform 3, and the aforementioned connection device.

[0062] It should be noted that the connecting device is the hub connecting the UAV and each payload platform 3. The normal operation of each payload platform 3 requires the connector to transmit power and electrical signals smoothly and continuously. Furthermore, since UAVs mostly operate outdoors, the connecting device must ideally be dustproof, waterproof, vibration-resistant, and have high reliability. The connecting device provided in this embodiment of the invention is highly versatile, allowing for easy switching between different payload platforms 3 such as gimbals, megaphones, lights, and bomb dispensers. Moreover, the design of this invention incorporates human operating habits, making the entire installation and disassembly process of the connecting device very convenient and quick. In addition, the connecting device is dustproof, waterproof, vibration-resistant, environmentally adaptable, and highly reliable.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A connecting device, characterized in that, Includes a first connector and a second connector; The first connector includes a base and a floating assembly. The floating assembly includes an inner rotating ring and an outer rotating ring. The outer rotating ring is buoyantly connected to the inner rotating ring, and the floating assembly is rotatably connected to the base. The inner rotating ring is provided with a snap fastener, and the second connector includes a snap fastener with a positioning hole. The base is provided with a positioning pin that mates with the positioning hole. When the positioning pin is inserted into the positioning hole, the snap fastener rotates with the outer rotating ring until it locks with the snap fastener. When the outer rotating ring rotates, the floating component is compressed. When the snap fastener is locked with the snap fastener, the floating component returns to its original state, and the outer rotating ring is secured to the base. The base is used to connect to one of the drone frame and the payload platform, and the second connector is used to connect to the other of the drone frame and the payload platform. The floating component further includes at least one elastic element, one end of which is connected to the inner rotating ring, and the other end of which abuts against the outer rotating ring. When the outer rotating ring rotates, the elastic element is compressed. When the snap fastener rotates with the rotation of the outer rotating ring to lock with the snap fastener, the elastic element returns to its original state, and the outer rotating ring is locked onto the base under the action of the elastic element, thereby achieving the locking of the first connector and the second connector. The inner rotating ring is provided with at least one mounting post, the outer rotating ring is provided with at least one mounting groove, one end of the elastic element is sleeved on the mounting post, and the other end of the elastic element abuts against the mounting groove; at least one elastic element, at least one mounting post, and at least one mounting groove are in a one-to-one correspondence.

2. The connecting device as described in claim 1, characterized in that, The number of elastic elements is multiple, and the multiple elastic elements are equidistantly distributed between the inner rotating ring and the outer rotating ring.

3. The connecting device as described in claim 1, characterized in that, The base includes a mounting base and a connecting ring. The mounting base is used to connect to one of the frame and the load platform. The locating pin is provided on the connecting ring. The inner rotating ring has a first opening, and the outer rotating ring has a second opening. The first opening and the second opening are arranged opposite to each other. The connecting ring passes through the first opening and the second opening in sequence and is connected to the mounting base. The bottom of the mounting base has a first groove, and the top of the outer rotating ring has a protrusion. When the swivel part is locked with the swivel member, the protrusion is locked on the first groove.

4. The connecting device as described in claim 3, characterized in that, The bottom of the mounting base is also provided with a second groove and a guide groove. The second groove communicates with the guide groove, and the guide groove is located between the first groove and the second groove. The depth of the guide groove decreases from the second groove towards the first groove. When the swivel part is locked with the swivel member, the protrusion can rotate from the second groove along the guide groove to the first groove. When the swivel part is unlocked from the swivel member, the protrusion can rotate from the first groove along the guide groove to the second groove.

5. The connecting device as described in claim 4, characterized in that, The depth of the guide groove gradually decreases from the second groove toward the first groove.

6. The connecting device as claimed in claim 4, characterized in that, The inner rotating ring is provided with a limiting groove, and the connecting ring is provided with a limiting part. When the buckle part is locked with the buckle member, the limiting part can rotate with the connecting ring to abut against one end of the limiting groove. When the buckle part is unlocked from the buckle member, the limiting part can rotate with the connecting ring to abut against the other end of the limiting groove.

7. The connecting device as claimed in claim 3, characterized in that, The connecting device further includes a sealing gasket, the first end face of which is connected to the connecting ring. When the swivel part is locked with the swivel member, the swivel member is pressed against the second end face of the sealing gasket.

8. The connecting device according to any one of claims 1-7, characterized in that, The first connector further includes a first circuit board with a first electrical interface, and the second connector further includes a second circuit board with a second electrical interface. The first electrical interface matches the second electrical interface. The first circuit board is connected to the base, and the second circuit board is connected to the swivel fastener. When the positioning pin is inserted into the positioning hole, the first electrical interface and the second electrical interface are electrically connected.

9. A drone, characterized in that, It includes a drone frame, a payload platform, and a connection device as described in any one of claims 1-8.

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