Wing folding device for multi-rotor unmanned aerial vehicle

Abstract

The utility model discloses a multi-rotor unmanned aerial vehicle wing folding device which is arranged on the upper end face of an unmanned aerial vehicle hangar body and comprises a parking platform, a first shifting rod and a second shifting rod which can slide relatively are arranged on the upper side and the lower side of the parking platform respectively, a first wing folding assembly is arranged on the first shifting rod, and a second wing folding assembly is arranged on the second shifting rod. And a second wing folding assembly is arranged on the second shifting rod. According to the unmanned aerial vehicle hangar, the wing folding assemblies are arranged on the shifting rods, so that the wings of the unmanned aerial vehicle can be folded, the area of the parking platform is reduced, and the overall size of the unmanned aerial vehicle hangar is reduced.

Description

Technical Field

[0001] This disclosure belongs to the field of unmanned aerial vehicle (UAV) application technology, specifically relating to a wing folding device for a multi-rotor UAV. Background Technology

[0002] With the continuous development of modern technology and the increasing maturity of drone manufacturing technology, the application of drones has entered a new stage. Multi-rotor drones are widely used in exploration and design, and daily inspection work in fields such as oil pipelines, smart agriculture, and municipal roads.

[0003] Patent CN114212265B discloses a hangar for multi-rotor drones, which uses an automatic homing device to control the drones to move to a set position on a receiving platform, such as... Figure 1 As shown, the receiving platform is equipped with an automatic homing device, which includes a single-rotor drive assembly 300 disposed in each mounting cavity; as Figure 2 As shown, the single-rotor drive assembly 300 includes a drive unit 310 and a rotation unit 320. The drive unit 310 moves the UAV by rotating through the first rotating wheel 313a, the second rotating wheel 313b, the third rotating wheel 313c and the fourth rotating wheel 313d on it under the drive of the rotation unit 320.

[0004] While the solutions disclosed in the aforementioned patents allow the drone to return to its designated position on the receiving platform, the inherent design of multi-rotor drones means their wings remain extended after a mission and cannot automatically retract. Furthermore, the patents do not disclose any technical solutions for wing retraction. Therefore, the receiving platform of the hangar shown in the patent needs to be sufficiently large to accommodate the multi-rotor drones. This large platform results in a bulky overall hangar, making it inconvenient to carry and failing to meet the requirements for miniaturization and lightweight design of multi-rotor drone hangars. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a multi-rotor drone wing folding device, which can fold the wings of the multi-rotor drone, thereby reducing the area of ​​the drone parking platform and the overall volume of the drone hangar, making it easier to carry.

[0006] To achieve the above objectives, this disclosure provides the following technical solutions:

[0007] A wing-folding device for a multi-rotor unmanned aerial vehicle (UAV), the device being positioned on the upper surface of the UAV hangar body, the device comprising:

[0008] Shutdown platform

[0009] The parking platform is equipped with a first lever and a second lever that can slide relative to each other on its upper and lower sides, respectively.

[0010] in,

[0011] The first lever is equipped with a first wing folding assembly.

[0012] The second lever is equipped with a second wing folding assembly.

[0013] Preferably, the first wing folding assembly includes a first wing folding propeller and a second wing folding propeller located on both sides of the first lever and close to the edge of the parking platform. The first wing folding assembly also includes a third wing folding propeller and a fourth wing folding propeller located in the middle of the first lever.

[0014] Preferably, the first and second folding propellers are oriented in the opposite direction to the third and fourth folding propellers.

[0015] Preferably, the second wing retraction assembly includes a fifth and a sixth wing retraction rotor located on both sides of the second lever and close to the edge of the parking platform. The second wing retraction assembly also includes a seventh and an eighth wing retraction rotor located in the middle of the second lever.

[0016] Preferably, the fifth and sixth folding rotors are oriented in the opposite direction to the seventh and eighth folding rotors.

[0017] Preferably, the first to eighth folding propellers have the same structure, including a servo motor, the servo motor is connected to a propeller arm via a rotating shaft, and a ball bearing is provided at the top of the propeller arm.

[0018] Preferably, the parking platform is provided with a third lever and a fourth lever that can slide relative to each other on its left and right sides, respectively.

[0019] Preferably, the third and fourth levers are positioned at a lower height relative to the surface of the parking platform than the first and second levers.

[0020] Preferably, the parking platform is provided with a chute on its periphery, and a slide rail is provided in the chute.

[0021] Preferably, the first to fourth levers slide on the surface of the parking platform via the slide groove and slide rail.

[0022] Compared with the prior art, the beneficial effects of this disclosure are as follows: by setting a wing folding component on the lever, this disclosure can fold the wings of the UAV, thereby reducing the area of ​​the parking platform and thus reducing the overall volume of the UAV hangar. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the receiving platform in an existing drone hangar;

[0024] Figure 2 yes Figure 1 A schematic diagram of the automatic homing device in the receiving platform shown;

[0025] Figure 3 This is a schematic diagram of a multi-rotor drone wing folding device placed on the upper surface of the drone hangar body according to an embodiment of this disclosure;

[0026] Figure 4 This is a front view of a wing folding device for a multi-rotor unmanned aerial vehicle provided in another embodiment of this disclosure;

[0027] Figure 5 This is a top view of a multi-rotor unmanned aerial vehicle (UAV) wing folding device provided in another embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of the structure of a retractable propeller provided in one embodiment of this disclosure;

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. Hangar body; 2. Parking platform; 3. Multi-rotor UAV; 4-1. First lever; 4-2. Second lever; 4-3. Third lever; 4-4. Fourth lever; 5-1. First retractable rotor (5-1-1. Servo; 5-1-2. Rotating shaft; 5-1-3. Propeller arm; 5-1-4. Ball bearing); 5-2. Second retractable rotor; 5-3. Third retractable rotor; 5-4. Fourth retractable rotor; 5-5. Fifth retractable rotor; 5-6. Sixth retractable rotor; 5-7. Seventh retractable rotor; 5-8. Eighth retractable rotor; 6. Connector; 7. Slide groove; 8. Slide rail; 9. Charging module. Detailed Implementation

[0031] The following will refer to the appendix. Figures 1 to 6 Specific embodiments of this disclosure are described in detail. While specific embodiments of this disclosure are shown in the accompanying drawings, it should be understood that this disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0032] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that different terms may be used to refer to the same component. This specification and claims do not distinguish components based on differences in terminology, but rather on differences in function. The terms "comprising" or "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising but not limited to." The following descriptions are preferred embodiments for carrying out this disclosure; however, these descriptions are for the purpose of understanding the general principles of the specification and are not intended to limit the scope of this disclosure. The scope of protection of this disclosure is determined by the appended claims.

[0033] To facilitate understanding of the embodiments of this disclosure, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings do not constitute a limitation on the embodiments of this disclosure.

[0034] In one embodiment, this disclosure provides a wing-folding device for a multi-rotor unmanned aerial vehicle, such as... Figure 3 As shown, the device is placed on the upper surface of the drone hangar body 1, as... Figure 4 As shown, the folding device includes:

[0035] Shutdown Platform 2

[0036] The parking platform 2 is provided with a first lever 4-1 and a second lever 4-2 that can slide relative to each other on its upper and lower sides, respectively.

[0037] in,

[0038] The first lever 4-1 is equipped with a first wing folding assembly.

[0039] The second lever 4-2 is equipped with a second wing folding assembly.

[0040] In this embodiment, the first lever 4-1 and the second lever 4-2 are arranged in parallel and can slide relative to each other along the left and right edges of the parking platform. The parking platform is equipped with a drive motor that is electrically connected to the first lever 4-1 and the second lever 4-2. The drive motor is equipped with a signal receiver. Control signals can be sent to the signal receiver through remote control, so that the drive motor drives the first lever 4-1 and the second lever 4-2 to move synchronously or asynchronously towards the middle of the parking platform 2, thereby pushing the UAV to move towards the middle of the parking platform 2.

[0041] Furthermore, this disclosure provides two sets of wing folding components on the first lever 4-1 and the second lever 4-2. By using the wing folding components to fold the drone's wings by contacting them during the process of moving the drone to the center position of the parking platform as it slides with the lever, the area of ​​the parking platform can be reduced, thereby further reducing the overall volume of the drone hangar and making it easier to carry.

[0042] In another embodiment, the first wing retraction assembly includes a first wing retraction rotor 5-1 and a second wing retraction rotor 5-2 located on both sides of the first lever 4-1 and near the edge of the parking platform. The first wing retraction assembly also includes a third wing retraction rotor 5-3 and a fourth wing retraction rotor 5-4 located in the middle of the first lever 4-1.

[0043] In this embodiment, as Figure 4 and Figure 5 As shown, the first to fourth folding propellers are evenly spaced on the first lever 4-1. The first and second folding propellers located on both sides of the first lever 4-1 face the UAV wing (i.e., the propeller arms of the first and second folding propellers are vertically aligned with the side of the first lever 4-1 closest to the UAV wing), while the third and fourth folding propellers located in the middle of the first lever 4-1 face away from the UAV wing (i.e., the propeller arms of the third and fourth folding propellers are vertically aligned with the side of the first lever 4-1 furthest from the UAV wing). By designing the orientations of adjacent first and third retractable rotor blades to be opposite, and by designing the orientations of adjacent second and fourth retractable rotor blades to be opposite, it is possible to prevent mutual interference between the first and third retractable rotor blades and the second and fourth retractable rotor blades during rotation from a horizontal state (i.e., the retractable rotor blades are parallel to the first lever 4-1) to a vertical state (i.e., the retractable rotor blades are perpendicular to the first lever 4-1) or from a vertical state to a horizontal state. This avoids collisions and damage to adjacent retractable rotor blades during rotation.

[0044] In another embodiment, the second wing retraction assembly includes a fifth retractable rotor 5-5 and a sixth retractable rotor 5-6 located on both sides of the second lever 4-2 and near the edge of the parking platform. The second wing retraction assembly also includes a seventh retractable rotor 5-7 and an eighth retractable rotor 5-8 located in the middle of the second lever 4-2.

[0045] In this embodiment, the design principle of the fifth to eighth folding rotors is the same as that of the first to fourth folding rotors described above. They all adopt a design method in which adjacent folding rotors face opposite directions, so we will not go into further detail here.

[0046] In another embodiment, the first to eighth folding propellers have the same structure. Taking the first folding propeller 5-1 as an example, its structure is described. The first folding propeller 5-1 includes a servo motor 5-1-1. The servo motor 5-1-1 is connected to a propeller arm 5-1-3 through a rotating shaft 5-1-2. The top of the propeller arm 5-1-3 is connected to a ball bearing 5-1-4 through a thread.

[0047] In this embodiment, the servo motor is electrically connected to the drive motor placed in the parking platform. When the lever moves under the control of the drive motor, the servo motor also controls the propeller arm to rotate from a horizontal state to a vertical state through the rotating shaft under the control of the drive motor. When the propeller arm is completely vertical, the ball bearing set at the top of the propeller arm can contact the edge of the wing. Since the ball bearing is rotatable, the extreme phenomenon of the wing retractor jamming with the wing will not occur.

[0048] In addition, it should be noted that the propeller arms and the rotating shaft are detachable. Since different drone models may have different wing heights, propeller arms of different lengths can be replaced to adapt to different wing folding requirements.

[0049] In another embodiment, a third lever 4-3 and a fourth lever 4-4 that can slide relative to each other are respectively provided on the left and right sides of the parking platform.

[0050] In this embodiment, the third lever 4-3 and the fourth lever 4-4 are arranged parallel to each other and perpendicular to the first lever 4-1 and the second lever 4-2. Furthermore, the height of the third lever 4-3 and the fourth lever 4-4 relative to the surface of the landing platform is lower than that of the first lever 4-1 and the second lever 4-2. This allows the third lever 4-3 and the fourth lever 4-4 to slide simultaneously during the sliding of the first lever 4-1 and the second lever 4-2 (the third lever 4-3 and the fourth lever 4-4 are driven by other drive motors located within the landing platform, and their working principle is the same as that of the first lever 4-1 and the second lever 4-2). This enables the drone to move towards the center of the landing platform under the coordinated action of the levers located in four different directions (up, down, left, and right), ensuring that the final landing position of the drone is always in the very center of the landing platform without any deviation.

[0051] In another embodiment, a groove 7 is provided around the parking platform, and a slide rail 8 is provided inside the groove 7.

[0052] In this embodiment, as Figure 4 As shown, the parking platform has two sliding grooves 7 on each side, with two sliding grooves on each side, and one sliding groove corresponds to one lever. Figure 4Only the slide grooves and slide rails on the adjacent two sides are shown (the other two sides have the same setup). Each lever has a connector 6 on both sides. The lever is connected to the slide rail 8 through the connector 6. Driven by the drive motor in the parking platform, the slide rail can slide in the slide groove, thereby driving the lever to move on the surface of the parking platform.

[0053] In another embodiment, a charging module 9 is also provided on the first lever 4-1.

[0054] In this embodiment, the charging module 9 can be a contact charging module or a wireless charging module. In the case of a wireless charging module, the wireless transmitting coil can be set below the parking platform, and the receiving coil can be set on the multi-rotor UAV 3. Wireless power transmission is achieved through the coupling of the wireless transmitting coil and the receiving coil.

[0055] The foregoing general description and specific embodiments of this disclosure should not be construed as limiting the technical solutions described herein. Those skilled in the art, based on this disclosure, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the invention, to form other technical solutions within the scope of protection of this disclosure.

Claims

1. A wing folding device for a multi-rotor unmanned aerial vehicle (UAV), the device being positioned on the upper surface of the UAV hangar body, characterized in that, The device includes: Shutdown platform The parking platform is equipped with a first lever and a second lever that can slide relative to each other on its upper and lower sides, respectively. in, The first lever is equipped with a first wing folding assembly. The second lever is equipped with a second wing folding assembly; The first wing retraction assembly includes a first wing retraction propeller and a second wing retraction propeller located on both sides of the first lever and close to the edge of the parking platform. The first wing retraction assembly also includes a third wing retraction propeller and a fourth wing retraction propeller located in the middle of the first lever. The first and second folding rotors are oriented in the opposite direction to the third and fourth folding rotors; The second wing retraction assembly includes a fifth and a sixth wing retraction rotor located on both sides of the second lever and close to the edge of the parking platform. The second wing retraction assembly also includes a seventh and an eighth wing retraction rotor located in the middle of the second lever. The fifth and sixth folding rotors are oriented in the opposite direction to the seventh and eighth folding rotors; The first retractable rotor includes a servo motor, which is connected to a rotor arm via a rotating shaft, and a ball bearing is connected to the top of the rotor arm via a threaded connection. The servo is electrically connected to the drive motor located in the parking platform. When the lever moves under the control of the drive motor, the servo also controls the rotor arm to rotate from a horizontal state to a vertical state through the rotating shaft under the control of the drive motor. When the rotor arm is completely vertical, the ball bearings set at the top of the rotor arm can contact the edge of the wing.

2. The apparatus of claim 1, wherein, The first to the eighth folding propellers have the same structure, including a servo motor. The servo motor is connected to the propeller arm via a rotating shaft, and the top of the propeller arm is equipped with a ball bearing.

3. The apparatus of claim 1, wherein, The parking platform is equipped with a third lever and a fourth lever that can slide relative to each other on its left and right sides, respectively.

4. The apparatus of claim 3, wherein, The third and fourth levers are at a lower height relative to the surface of the parking platform than the first and second levers.

5. The apparatus of claim 1, wherein, The parking platform is provided with a chute on its periphery, and a slide rail is installed inside the chute.

6. The apparatus of claim 5, wherein, The first to fourth levers slide on the surface of the parking platform via the slide groove and slide rail.

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