External antenna structure for unmanned aerial vehicle and multifunctional unmanned aerial vehicle

Abstract

An external antenna structure for an unmanned aerial vehicle and a multifunctional unmanned aerial vehicle of the utility model relate to the unmanned aerial vehicle communication field, the external antenna structure comprises an external antenna component arranged on an unmanned aerial vehicle body, the external antenna component is designed to be higher than a built-in antenna structure on the unmanned aerial vehicle body, and the built-in antenna structure is arranged on the unmanned aerial vehicle body. The radiation source installed on the substrate is arranged at the height higher than the water surface, even if the part, with the built-in antenna structure, of the unmanned aerial vehicle is submerged into the water surface, the radiation source part of the external antenna is still kept above the water surface, it is guaranteed that receiving and transmitting of wireless signals are not affected by water surface obstruction, and in addition, the radiation source part is not affected by water surface obstruction. A built-in antenna structure and an external antenna part on the multifunctional unmanned aerial vehicle need to be manually installed by a user to be switched, the multifunctional unmanned aerial vehicle clearly flies in the air and does not enter the water or be close to the water surface for operation, and the multifunctional unmanned aerial vehicle uses the built-in antenna structure; a multifunctional unmanned aerial vehicle clearly works on the water surface or stays on the water surface, and a user needs to manually switch to an external antenna component.

Description

Technical Field

[0001] The utility model relates to the field of UAV communication, and particularly relates to an external antenna structure for UAVs and a multi-functional UAV. Background Technique

[0002] With the rapid development of UAV technology, more and more multi-functional UAVs are being applied in various fields, such as agricultural monitoring, environmental monitoring, traffic management, disaster relief, etc. These UAVs usually have a high degree of flexibility and adaptability, can perform complex tasks, and operate under various environmental conditions. The design concept of multi-functional UAVs is to integrate multiple functions on one platform to improve operation efficiency and reduce costs.

[0003] The design of modern multi-functional UAVs usually combines multiple functions such as flight, hovering, aerial photography, and dropping, enabling them to play a role in complex application scenarios. Such UAVs are equipped with high-performance sensors and camera devices, capable of collecting and processing data in real time. In addition, they may also have the ability to take off and land on water, and can perform tasks such as patrolling, monitoring, or rescue on the water surface, greatly expanding the application scope of UAVs.

[0004] In certain specific application scenarios, such as ocean monitoring, lake management, and disaster prevention and rescue, surface cruising has become an important function for UAVs to perform tasks. When a UAV cruises on the water surface, it can quickly obtain the water surface status, monitor water quality changes, and conduct water area searches. However, when existing multi-functional UAVs perform surface cruising, they still face some technical challenges. The most prominent problem is that the part of the UAV body equipped with the built-in antenna structure will be submerged in the water, and the water will attenuate and scatter the wireless signal, resulting in a decline in signal quality or even a complete interruption. Due to unstable signals, it is impossible to obtain surrounding environmental information in a timely manner, resulting in a reduction in the efficiency of the UAV when performing monitoring, patrolling, and other tasks, and unable to achieve the expected effect, which has a serious impact on applications that require real-time data transmission, such as video monitoring and remote control.

[0005] Furthermore, since UAVs rely on antenna signals for remote operation, during the surface cruising process, if the antenna signal of the UAV is interfered with or lost, the attitude control system may not be able to obtain instructions from the ground station, and the ground control personnel will not be able to continue to control the flight attitude, direction, or speed of the UAV. This may cause the UAV to enter a drifting or spontaneous flight state, lose precise control, resulting in the inability to stably control the UAV, increasing the operation risk, and even causing the UAV to get out of control, easily leading to the imbalance or fall of the UAV.

[0006] Moreover, if the drone does not have an automatic return function after signal loss or the return function is damaged, the control of the drone may be completely lost, resulting in the drone getting lost in water or other remote environments and being difficult to retrieve.

[0007] This utility model is researched and proposed in view of the deficiencies of the prior art. Content of the Utility Model

[0008] Regarding the technical problem that when the multifunctional drone in the above-mentioned prior art conducts water surface cruising, the part of the drone body equipped with the built-in antenna structure will be submerged in the water surface, and the water will cause attenuation and scattering of the wireless signal, resulting in a decrease in signal quality or even complete interruption, affecting the normal operation of the drone.

[0009] The technical solution adopted by this utility model to solve its technical problems is as follows:

[0010] An external antenna structure for a multifunctional drone, including an external antenna component provided on the drone body. The external antenna component includes an antenna housing and a substrate assembled in the antenna housing. A radiation source is provided on the substrate for receiving and transmitting wireless signals. The part of the substrate with the radiation source is higher than the part of the drone body with the built-in antenna structure. When the multifunctional drone performs a water surface cruising action, the part of the drone body with the built-in antenna structure will be submerged in the water surface, and the part of the substrate with the radiation source will be higher than the water surface.

[0011] For an external antenna structure for a multifunctional drone as described above, the antenna housing includes an antenna protection cover and an antenna base arranged in sequence from top to bottom. The part of the substrate with the radiation source is located inside the antenna protection cover.

[0012] For an external antenna structure for a multifunctional drone as described above, one end of the substrate is located inside the antenna protection cover, and the other end of the substrate is located inside the antenna base.

[0013] For an external antenna structure for a multifunctional drone as described above, the external antenna structure further includes a feeding component. The feeding component is provided between the external antenna component and the drone body, and the feeding component can electrically connect the external antenna component with the electrical components inside the drone body.

[0014] For an external antenna structure for a multifunctional drone as described above, the feeding component includes a feeder line and an antenna feeder plug provided at one end of the feeder line. The other end of the feeder line extends into the antenna housing and is electrically connected to the radiation source on the substrate. The antenna feeder plug can be connected to the feeder line socket on the drone body.

[0015] A multi-functional external antenna structure for an unmanned aerial vehicle (UAV) as described above. The external antenna structure further includes an antenna connection base disposed on the UAV body. The external antenna component is disposed on the antenna connection base, and a connection component capable of enabling detachable connection between the antenna housing and the antenna connection base is provided therebetween.

[0016] A multi-functional external antenna structure for an unmanned aerial vehicle (UAV) as described above. The connection component includes a hook rotatably connected to the antenna housing and an elastic member disposed between the hook and the antenna housing. The elastic member can maintain the hook in a state of clamping the antenna connection base.

[0017] A multi-functional external antenna structure for an unmanned aerial vehicle (UAV) as described above. The elastic member includes an elastic spring. A first fixed groove is provided on the hook, and a second fixed groove corresponding to the first fixed groove is provided on the antenna housing. Both ends of the elastic spring are respectively located in the corresponding first fixed groove and second fixed groove.

[0018] A multi-functional external antenna structure for an unmanned aerial vehicle (UAV) as described above. An avoidance opening for avoiding the hook is provided on one side of the antenna connection base. A limiting component capable of preventing the antenna housing from disengaging from the avoidance opening is provided between the antenna connection base and the antenna housing. The limiting component includes a limiting groove and a limiting protrusion capable of being inserted into the limiting groove.

[0019] A multi-functional unmanned aerial vehicle (UAV) includes a UAV body and the external antenna structure as described in any one of the above. An internal antenna structure is provided inside the UAV body, and the part of the substrate having the radiation source is higher than the internal antenna structure.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1. An external antenna structure for a UAV and a multi-functional UAV according to the present utility model relate to the field of UAV communication. The external antenna structure includes an external antenna component disposed on the UAV body. The external antenna component includes an antenna housing and a substrate assembled inside the antenna housing. A radiation source is provided on the substrate, and the part of the substrate having the radiation source is higher than the part of the UAV body having the internal antenna structure. That is, the external antenna component in the present utility model is designed to be higher than the internal antenna structure on the UAV body. The part of the radiation source installed on the substrate is placed at a height above the water surface. Even if the part of the UAV body having the internal antenna structure is submerged in the water, the part of the radiation source of the external antenna still remains above the water surface, thereby ensuring stable signal transmission, ensuring that the reception and transmission of wireless signals are not affected by water surface obstruction, and ensuring the continuity and reliability of communication.

[0022] 2. For the built-in antenna structure and external antenna components on the multifunctional UAV in this embodiment, the user needs to install and switch them manually. When the multifunctional UAV is clearly flying in the air and will not enter the water or operate close to the water surface, the built-in antenna structure is used for the multifunctional UAV; when the multifunctional UAV is clearly operating on the water surface or staying on the water surface, the user needs to manually switch to the external antenna components.

[0023] The following will further describe the present utility model in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 One of the structural schematic diagrams of the external antenna structure of the present utility model;

[0025] Figure 2 Another structural schematic diagram of the external antenna structure of the present utility model;

[0026] Figure 3 Exploded schematic diagram of the external antenna structure of the present utility model;

[0027] Figure 4 Structural schematic diagram of the multifunctional UAV of the present utility model;

[0028] Figure 5 Top view schematic diagram of the multifunctional UAV of the present utility model;

[0029] Figure 6 For Figure 5 Cross-sectional schematic diagram along line A-A;

[0030] Figure 7 For Figure 5 Cross-sectional schematic diagram along line B-B;

[0031] Figure 8 For Figure 5 One of the cross-sectional schematic diagrams along line C-C (the antenna feeder plug is connected to the feeder socket with an electrical connection member);

[0032] Figure 9 For Figure 5 Another cross-sectional schematic diagram along line C-C (the antenna feeder plug is connected to the feeder socket without an electrical connection member);

[0033] Figure 10 Exploded schematic diagram of the multifunctional UAV of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following will describe in detail the embodiments of the present utility model in conjunction with the accompanying drawings.

[0035] Embodiment 1:

[0036] AsFigures 1 to 10 As shown in the figure, an external antenna structure for a multifunctional drone in this embodiment includes an external antenna component 2 provided on the drone body 1. The external antenna component 2 includes an antenna housing 21 and a substrate 22 assembled in the antenna housing 21. A radiation source is provided on the substrate 22 for receiving and transmitting wireless signals. The part of the substrate 22 with the radiation source is higher than the part of the drone body 1 with the built-in antenna structure 3. That is, the external antenna component 2 in this embodiment is designed to be higher than the built-in antenna structure 3 on the drone body 1. Specifically, the part of the radiation source installed on the substrate 22 is placed at a height above the water surface. Even if other parts of the drone (including the built-in antenna structure 3) are submerged in the water surface, the radiation source part of the external antenna still remains above the water surface, thus ensuring stable signal transmission.

[0037] By adopting this external antenna structure, when the multifunctional drone performs water surface cruising, the radiation source of the external antenna structure is higher than the water surface, ensuring that the reception and transmission of wireless signals during water surface cruising are not affected by the water surface barrier, guaranteeing the continuity and reliability of communication, and effectively avoiding the problem of signal loss caused by the antenna being submerged in the water. This design not only improves the operation reliability of the drone in the water surface environment but also reduces the risk of out-of-control caused by signal interruption, ensuring the safety of the drone and the continuity of task execution.

[0038] Moreover, the external antenna avoids risks such as the out-of-control and falling of the drone that may be caused by signal loss, improving the operation safety of the drone in the water surface environment. This design is particularly suitable for multifunctional drones working in water surface or similar complex environments, increasing the usage scenarios and adaptability of the drone.

[0039] Specifically, the part of the drone body 1 with the built-in antenna structure 3 being submerged in the water surface includes two situations: the entire part of the built-in antenna structure 3 of the drone body 1 is submerged under the water surface, and a partial area of the built-in antenna structure 3 of the drone body 1 is immersed in the water while other parts still remain above the water surface.

[0040] As Figures 1 to 10 shown in the figure, the antenna housing 21 of this embodiment includes an antenna protection cover 211 and an antenna base 212 arranged in sequence from top to bottom. The part of the substrate 22 with the radiation source is located inside the antenna protection cover 211.

[0041] Specifically, the antenna protective cover 211 is the upper structure of the antenna housing 21, which is specifically used to wrap and protect the internal antenna substrate 22 and the radiation source thereon. The protective cover is usually made of waterproof and dustproof materials to ensure that the antenna can still work normally in various harsh environments. The part of the substrate 22 with the radiation source is installed in the antenna protective cover 211, which means that the radiation source is always protected above the water surface. In this way, even when cruising on the water surface, other parts of the drone and the antenna housing 21 (such as the antenna base 212) may come into contact with or be immersed in water, and the radiation source can still maintain normal signal reception and transmission.

[0042] Furthermore, the antenna base 212 is the lower structure of the antenna housing 21, which is used to support and fix the entire antenna to ensure its stability. Due to its relatively low position, when the drone approaches or contacts the water surface, the antenna base 212 may be at a certain distance from the water surface, close to the water surface, partially immersed in the water, or completely immersed in the water.

[0043] This structural design takes into account the situation when the drone is cruising, especially when approaching the water surface or when part of the structure comes into contact with the water body due to attitude changes. Even if the antenna base 212 is immersed in water, the radiation source part in the antenna protective cover 211 still remains above the water surface, thus avoiding the risk of signal obstruction.

[0044] With such a design, it is ensured that the radiation source part is always above the water surface. Even if the antenna base 212 is immersed in water, the wireless signal can still be kept unobstructed. Moreover, the antenna housing 21 not only protects the radiation source but also effectively prevents the influence of water, dust and other factors on the antenna, improving the service life and working stability of the antenna.

[0045] As Figure 6 shown, the dotted line is the water surface. It can be clearly seen that when the part of the drone body 1 with the built-in antenna structure 3 is submerged in the water surface, the radiation source part of the external antenna still remains above the water surface, thus ensuring stable signal transmission.

[0046] As Figures 1 to 10 shown, one end of the substrate 22 in this embodiment is located inside the antenna protective cover 211, and the other end of the substrate 22 is located inside the antenna base 212.

[0047] Specifically, one end of the substrate 22 is located inside the antenna protective cover 211, while the other end is located inside the antenna base 212. This design extends the effective length of the substrate. Under the same other factors, the longer the substrate length, the larger the radiation range of the antenna. Taking the microstrip antenna as an example, the microstrip antenna is a planar resonant cavity, and its radiation mainly depends on the current distribution at the edge of the antenna. When the substrate length increases, the antenna can support more wavelength distributions, thereby enhancing the radiation ability of the antenna. In addition, the increase in the substrate length also means that the antenna can better focus the electromagnetic wave energy, further improving the radiation efficiency. Therefore, under the condition that other conditions remain unchanged, by increasing the length of the substrate, the radiation range of the antenna can be effectively expanded, thereby enhancing the receiving and transmitting capabilities of the antenna and improving the quality and intensity of the signal.

[0048] Furthermore, due to the increase in the length of the substrate, the radiation effect of the antenna is improved, thereby enhancing its working performance at different frequencies. This design can ensure that the drone can effectively receive and send signals in the water surface environment and maintain a stable connection with the control center.

[0049] Furthermore, both ends of the substrate 22 are respectively fixed inside the antenna protective cover 211 and the antenna base 212 to form a stable structure. Such a support design can effectively prevent the displacement of the substrate caused by external disturbances during flight and ensure the working stability of the antenna.

[0050] Preferably, the antenna protective cover 211 and the antenna base 212 of this embodiment are of a detachable connection structure, which is convenient for maintaining the substrate 22.

[0051] As Figures 1 to 10 shown, the external antenna structure of this embodiment further includes a feeding component 4. The feeding component 4 is arranged between the external antenna component 2 and the drone body 1. The main function of the feeding component 4 is to connect the signal transmission requirements of the external antenna component 2 with the electrical components inside the drone body 1. This includes transmitting the radio frequency signal from the antenna to the processing unit of the drone, and at the same time, it can also transmit the control signal inside the drone to the external antenna.

[0052] The feeding component 4 ensures the signal receiving and transmitting capabilities under various environmental conditions by effectively connecting the external antenna component 2 and the drone body 1, and improves the communication stability and reliability of the entire system.

[0053] Preferably, the feeding component 4 of this embodiment includes a feeder 41 and an antenna feeder plug 42 provided at one end of the feeder 41. The other end of the feeder 41 extends into the antenna housing 21 and is electrically connected to the radiation source on the substrate 22. Specifically, an electrical connection part 11 corresponding to the external antenna structure is provided on the drone body 1, and a feeder socket 51 is provided on the electrical connection part 11. The antenna feeder plug 42 can be connected to the feeder socket 51 on the drone body 1.

[0054] Specifically, the feeder 41 is a cable for transmitting electrical signals. One end is connected to the antenna feeder plug 42, and the other end extends into the antenna housing 21 and is electrically connected to the radiation source on the substrate 22. The main function of the feeder 41 is to transmit the electrical signals from the drone body to the radiation source of the external antenna component 2 and send back the signals received from the radiation source to the drone body. This two-way transmission function ensures the normal operation of the drone communication system.

[0055] The antenna feeder plug 42 is located at one end of the feeder 41 and is designed to be paired and connected with the feeder socket 51 on the drone body 1. The design of the plug 42 enables the feeding component 4 to be conveniently connected to the drone body, thus achieving quick installation and disassembly. This design not only improves the operation efficiency of the system but also enhances the convenience of maintenance.

[0056] Specifically, the socket 51 and the plug 42 cooperate to achieve the electrical connection between the drone body and the external antenna component 2. This connection method ensures the stable transmission of signals and enables the flexible installation and replacement of the external antenna component. The design of the antenna feeder plug 42 and the feeder socket 51 makes the entire feeding component 4 exhibit a high degree of modularity. This modular design facilitates the sharing of external antenna components among different models of drones, enhances the adaptability and versatility of the system, and enables quick replacement and upgrade.

[0057] Furthermore, the cooperative design of the plug 42 and the socket 51 ensures the stability of the connection and the reliability of signal transmission, while simplifying the installation and disassembly process, which is suitable for drone tasks with frequent operations.

[0058] As Figures 1 to 10 shown, the external antenna structure of this embodiment further includes an antenna connection base 6 provided on the drone body 1. The external antenna component 2 is provided on the antenna connection base 6, and a connection component capable of enabling detachable connection between the antenna housing 21 and the antenna connection base 6 is provided therebetween.

[0059] Specifically, the antenna connection base 6 provides a stable connection foundation to ensure reliable connection with the external antenna component 2, keeping the external antenna structure stable during flight and reducing loosening caused by vibration or airflow.

[0060] Specifically, the connecting component is located between the antenna housing 21 and the antenna connection base 6 and is designed to enable detachable connection between the two. This design allows users to easily remove the external antenna component 2 when needed for maintenance, storage, or replacement. Alternatively, removing the external antenna component 2 can effectively reduce the wind resistance of the drone at high altitudes. Also, when the external antenna is not in use, it can be easily removed to prevent damage during transportation or storage. This design effectively protects the antenna component and extends its service life.

[0061] Furthermore, the detachable feature of the connecting component makes the installation and removal process of the external antenna simple and intuitive. Users can quickly switch antenna configurations under different task requirements. For example, in some tasks that require quick response, users can quickly complete the removal and installation of the external antenna.

[0062] Specifically, the connecting component can be designed with plug - in, snap - on, or other standardized connection methods to ensure that users can quickly and conveniently connect or disconnect the external antenna during actual operation without the need for complex tools or excessive operation steps.

[0063] Specifically, users can choose to install different external antennas according to different operation requirements, providing more flexible functions for the drone, such as enhancing signal coverage, improving data transmission speed, etc.

[0064] As Figures 1 to 10 shown, the connecting component of this embodiment includes a hook 7 rotatably connected to the antenna housing 21 and an elastic member 71 disposed between the hook 7 and the antenna housing 21. The elastic member 71 can keep the hook 7 in a state of clamping the antenna connection base 6.

[0065] Specifically, the hook 7 firmly fixes the external antenna component 2 to the antenna connection base 6 by rotating and clamping, ensuring that the antenna is not easily loosened or detached during flight. The elastic member 71 is located between the hook 7 and the antenna housing 21. The function of the elastic member 71 is to keep the hook 7 always in a state of clamping the antenna connection base 6, reducing the risk of loosening caused by vibration or other external factors, enhancing the reliability of the connection, and thus improving the stability of the antenna and the signal transmission quality.

[0066] Specifically, users only need to simply place the external antenna component 2 on the antenna connection base 6 and then press the hook 7 to complete the fixation, avoiding complex installation steps. This design lowers the operation threshold and is suitable for various users, whether professional operators or ordinary users. Also, when it is necessary to replace or maintain the external antenna, users only need to easily release the hook 7 to quickly remove the antenna component, saving time and improving the maintenance efficiency.

[0067] As shown Figures 1 to 10 in the figure, the elastic member 71 of this embodiment includes an elastic spring. A first fixing groove 72 is provided on the hook 7, and a second fixing groove 213 corresponding to the first fixing groove 72 is provided on the antenna housing 21. Both ends of the elastic spring are respectively located in the corresponding first fixing groove 72 and second fixing groove 213.

[0068] Specifically, the elastic spring, as the elastic member 71, has good elasticity and recovery ability. One end of it is fixed in the first fixing groove 72 of the hook 7, and the other end is fixed in the second fixing groove 213 of the antenna housing 21. Through its elastic characteristics, the elastic spring can provide a reverse restoring force when the pressed hook 7 is released, ensuring that the hook can quickly return to the clamping state after the external pressure is removed. This design effectively prevents the hook from loosening accidentally during vibration or operation.

[0069] Specifically, the first fixing groove 72 on the hook 7 corresponds to the second fixing groove 213 on the antenna housing 21, forming a mechanical connection structure. The design of these two grooves enables the elastic spring to be stably fixed between the hook and the antenna housing, ensuring that the elastic spring is always in an effective working state and enhancing the clamping force of the hook.

[0070] Preferably, in this embodiment, the hook 7 is provided on one side of the antenna housing 21 and near the bottom of the antenna housing 21. The hook 7 includes a pressing portion 73, a rotating portion 74, and a clamping portion 75 connected in sequence. The elastic member 71 is located between the pressing portion 73 and the antenna housing 21. A rotating shaft 216 that can cooperate with the rotating portion 74 is provided on the antenna housing 21. The user can press the pressing portion 73 on the hook 7. The pressing portion 73 drives the clamping portion 75 to move away from the antenna housing 21 through the rotating portion 74, and the elastic member 71 is in an elastically compressed state. When the bottom of the antenna housing 21 abuts against the inner bottom of the antenna connection base 6, the force on the pressing portion 73 can be removed. The elastic member 71 elastically recovers, driving the pressing portion 73 to move in the opposite direction. The pressing portion 73 drives the clamping portion 75 to move towards the antenna housing 21 through the rotating portion 74, and the top of the hook claw 751 of the clamping portion 75 abuts against the outer bottom of the antenna connection base 6. By the bottom of the antenna housing 21 abutting against the inner bottom of the antenna connection base 6 and the top of the hook claw 751 of the clamping portion 75 abutting against the outer bottom of the antenna connection base 6, the antenna housing 21 is clamped on the antenna connection base 6.

[0071] Preferably, in some other embodiments, corresponding locking blocks are provided between the antenna housing 21 and the antenna connection base 6. When the corresponding locking blocks abut against each other, the force applied to the pressing portion 73 can be removed, and the elastic member 71 elastically returns, so that the top of the hook 751 of the clamping portion 75 abuts against the outer side of the bottom of the antenna connection base 6. By the corresponding locking blocks abutting against each other and the top of the hook 751 of the clamping portion 75 abutting against the outer side of the bottom of the antenna connection base 6, the antenna housing 21 is clamped onto the antenna connection base 6. The bottom of the antenna housing 21 can abut against, be close to, or have a certain distance from the inner side of the bottom of the antenna connection base 6. If the bottom of the antenna housing 21 abuts against the inner side of the bottom of the antenna connection base 6, it can cooperate with the locking block to fix the antenna more firmly on the antenna connection base 6. If the bottom of the antenna housing 21 is close to or has a certain distance from the bottom of the antenna connection base 6, the flow space of the gas is increased, and the heat dissipation capacity of the external antenna structure is enhanced. The appropriate design can be selected according to actual requirements.

[0072] In some other embodiments, the elastic member 71 is an elastic spring provided on the rotating shaft 216. Since the installation position of the elastic spring is on the rotating shaft 216, the clamping hook 7 can more freely adapt to different external forces and states (such as rotation, tilting, etc.) during operation, improving the overall adaptability. The appropriate design can be selected according to actual requirements.

[0073] Preferably, a receiving groove 215 capable of accommodating the clamping hook 7 is further provided on one side of the antenna housing 21. The existence of the receiving groove 215 prevents the clamping hook 7 from protruding completely outside the antenna housing 21. The receiving groove 215 can effectively protect the clamping hook 7, prevent the clamping hook from accidentally opening under vibration or other external forces, ensure that the antenna always maintains a stable connection, and avoid potential damage or interference. Moreover, the receiving groove 215 can also provide a rotating space for the clamping hook 7 to ensure the normal locking and unlocking actions of the clamping hook 7.

[0074] Furthermore, by designing the receiving groove 215, the clamping hook 7 can be partially or completely hidden in the receiving groove 215, making the appearance of the antenna housing 21 more neat and beautiful, and improving the aesthetic degree of the overall design.

[0075] As Figures 1 to 10 shown, on one side of the antenna connection base 6 of this embodiment, an avoidance opening 61 for avoiding the clamping hook 7 is provided. A limiting component for preventing the antenna housing 21 from disengaging from the avoidance opening 61 is provided between the antenna connection base 6 and the antenna housing 21. The limiting component includes a limiting groove 214 and a limiting protrusion 62 that can be inserted into the limiting groove 214.

[0076] Specifically, an avoidance opening 61 is provided on one side of the antenna connector 6. The existence of the avoidance opening 61 reduces the interference between the clamping hook and the antenna connector, making the movement of the clamping hook smoother, ensuring the flexible operation of the clamping hook, and making it more convenient for the user to clamp or loosen the antenna.

[0077] Furthermore, the limiting component is composed of a limiting groove 214 and a limiting protrusion 62. The limiting groove 214 is provided on the antenna housing 21, and the limiting protrusion 62 is provided on the antenna connector 6, or the limiting groove 214 is provided on the antenna connector 6, and the limiting protrusion 62 is provided on the antenna housing 21. A suitable design can be selected according to actual requirements.

[0078] Specifically, the limiting protrusion 62 can be snapped into the limiting groove 214 to prevent the antenna housing 21 from coming out at the avoidance opening 61. This design ensures that the antenna can form a double-locking effect with the clamping hook 7 during use, making the external antenna component 2 firmly fixed to the antenna connector 6 and not easily falling off due to external forces, thereby improving the overall safety.

[0079] Moreover, the limiting groove 214 and the limiting protrusion 62 can also play a guiding role to ensure that the antenna housing 21 can be accurately assembled on the antenna connector 6, playing a role in positioning and assembly.

[0080] Preferably, the connection component can also have other different structures, such as:

[0081] (1) Snap structure:

[0082] By designing a pair of snaps, which are respectively provided on the antenna housing 21 and the antenna connector 6. The snap structure usually includes a protruding part and a recessed part. When the antenna housing 21 is docked with the antenna connector 6, the snaps will automatically snap in and fix, ensuring a firm connection. At the same time, the user can release the snaps by simple pressing or sliding to achieve quick disassembly.

[0083] (2) Threaded connection:

[0084] The antenna housing 21 and the antenna connector 6 can be detachably connected by threaded connection. Corresponding internal and external threads are respectively designed on the contact surfaces of the antenna housing and the connector. This connection method provides higher stability and is suitable for application scenarios that require greater pulling force or external force. The user can achieve connection and disassembly by simply rotating.

[0085] (3) Pin structure:

[0086] Bolts and sockets are respectively designed on the antenna housing 21 and the antenna connector 6. The bolt can be inserted into the socket to achieve connection. The bolt structure is easy to operate and can quickly achieve connection and disassembly, which is suitable for the need of frequently replacing the antenna. The connection component is not limited to the above structure, and a suitable design can be selected according to actual needs.

[0087] As Figures 1 to 10 shown, a multifunctional drone in this embodiment includes a drone body 1 and an external antenna structure as described in any one of the above. An internal antenna structure 3 is arranged inside the drone body 1, and the part of the substrate 22 with a radiation source is higher than the internal antenna structure 3.

[0088] For the multifunctional drone with such a design, even if the part of the drone with the internal antenna structure 3 is immersed in water, the radiation source part of the external antenna still remains above the water surface, thus ensuring stable signal transmission. When the multifunctional drone performs water surface cruising, the radiation source of the external antenna structure is higher than the water surface, ensuring that the reception and transmission of wireless signals during water surface cruising are not affected by the water surface barrier, ensuring the continuity and reliability of communication, and effectively avoiding the problem of signal loss caused by the antenna being immersed in water. This design not only improves the operation reliability of the drone in the water surface environment, but also reduces the risk of out-of-control caused by signal interruption, ensuring the safety of the drone and the continuity of mission execution.

[0089] Preferably, the number of external antenna structures on the multifunctional drone is at least one. In this embodiment, the number of external antenna structures is two, which are respectively arranged on both sides of the multifunctional drone, enabling the multifunctional drone during flight that not all external antenna structures are blocked by the drone body 1 to hinder signal transmission, ensuring that at least one external antenna structure can receive signals better.

[0090] In some other embodiments, only one external antenna structure can also be provided. To maintain the balance of the drone body 1, the external antenna structure can be arranged on the central axis of the drone body 1. It is not limited to the above structure, and a suitable design can be selected according to actual needs.

[0091] Preferably, the internal antenna structure 3 can be an internal antenna body arranged in the boom of the drone body 1 or an internal antenna body arranged in the fuselage of the drone body 1. A suitable design can be selected according to actual needs.

[0092] In this embodiment, when the multifunctional drone needs to perform a water surface cruise, the drone can be switched to receive and transmit signals through an external antenna structure. When it needs to perform a high-altitude cruise, the drone can be switched to receive and transmit signals through an internal antenna structure. Preferably, a physical switch or a DIP switch can be set on the drone body 1, and the user can switch the source of the antenna signal through a simple operation.

[0093] For example, through the control software or application program of the drone, the user can select the signal mode on the interface, and the system automatically switches to the external antenna structure or the internal antenna structure according to the selection.

[0094] Preferably, an LED indicator light can also be set on the external antenna structure. When switching to the external antenna, the indicator light lights up to remind the user that the signal has been successfully switched. A status feedback function can also be provided in the control software to ensure that the user can monitor the switching situation of the signal source in real time.

[0095] Preferably, when the multifunctional drone needs to perform a water surface cruise, the user can assemble the external antenna component 2 on the antenna connection seat 6, and then realize the electrical connection through the power feeding component 4, so as to realize that the drone switches to the external antenna structure to receive and transmit signals.

[0096] When the multifunctional drone needs to perform a high-altitude cruise, the user can disassemble the external antenna component 2 from the antenna connection seat 6 and disconnect the connection between the power feeding component 4 and the drone, so as to disconnect the connection between the external antenna structure and the drone and switch to the internal antenna structure to receive and transmit signals.

[0097] In summary, the internal antenna structure 3 and the external antenna component 2 on the multifunctional drone in this embodiment need to be manually installed and switched by the user. When the multifunctional drone is clearly flying in the air and will not enter the water or operate close to the water surface, the internal antenna structure 3 is used for the multifunctional drone; when the multifunctional drone is clearly operating on the water surface or staying on the water surface, the user needs to manually switch to the external antenna component 2.

[0098] Preferably, in some other embodiments, the system can also include an intelligent detection function to automatically judge the water surface cruise requirement and automatically switch the signal source under specific conditions to improve the convenience and reliability of the operation.

[0099] Embodiment 2:

[0100] The difference between Embodiment 2 and Embodiment 1 is that:

[0101] The substrate 22 is located entirely within the antenna protective cover 211, that is, the substrate 22 is completely placed inside the antenna protective cover 211. With such a design, even if the antenna housing 21 is damaged and water enters at the connection between the antenna protective cover 211 and the antenna base 212, it can ensure that the water in the antenna base 212 will not soak the substrate 22, and as much as possible ensure that the substrate 22 can operate normally, ensuring that the antenna can operate normally.

[0102] Embodiment 3:

[0103] The difference between Embodiment 3 and Embodiment 1 is that:

[0104] Each of the electrical connection parts 11 is provided with two feeder plugs 51. In the design of the drone, reserving multiple feeder plugs 51 can provide greater flexibility, allowing users to select different antenna configurations according to specific mission requirements. For example, one interface can be used for a high-gain directional antenna, and the other interface can be used for an omnidirectional antenna. In this way, when the mission environment or signal requirements change, the drone operator can quickly switch the feeder or antenna without having to rewire or modify the equipment, increasing the adaptability of the drone in different operating environments and providing redundancy backup. When one interface or antenna fails, it can be quickly switched to another interface.

[0105] In some other embodiments, the drone may need to operate in different frequency bands. For example, one interface is used for the 2.4 GHz frequency band, and the other interface is used for the 5.8 GHz frequency band. By setting two feeder plugs 51, the drone can easily switch between different frequencies to avoid interference or meet specific communication requirements. This design can enhance the multitasking ability and spectrum utilization efficiency of the drone, enabling it to adapt to different communication environments.

[0106] In some other embodiments, the design of the two feeder plugs 51 may be for the convenience of testing and maintenance. During ground testing or maintenance, technicians can use the second interface to test different antennas or measure the signal quality without having to remove the original connection, which can reduce the time for equipment replacement and maintenance, improving the operation efficiency and maintenance convenience of the drone.

[0107] Embodiment 4:

[0108] The difference between Embodiment 4 and Embodiment 3 is that:

[0109] Each of the electrical connection parts 11 is provided with two feeder plugs 51. One of the feeder plugs 51 is provided with an electrical connection member 511 capable of realizing electrical connection with the antenna feeder plug 42, and the other feeder plug 51 is not provided with the electrical connection member 511. With such a design, when the antenna feeder plug 42 is connected to the feeder plug 51 having the electrical connection member 511, the electrical connection between the UAV body and the external antenna component 2 can be realized. When the antenna feeder plug 42 is connected to the feeder plug 51 without the electrical connection member 511, the feeder plug 51 on this side provides a storage space for the antenna feeder plug 42. That is, when the UAV is in a scenario where the external antenna structure does not need to be used, the user can insert the antenna feeder plug 42 into the feeder plug 51 without the electrical connection member 511 to properly store the antenna feeder plug 42, avoiding the exposure of the plug, thereby reducing the damage to the plug caused by factors such as collision and dust, extending the service life of the antenna feeder plug 42, and being able to prevent the feeder 41 from being in a freely suspended or loose state outside the UAV body, and preventing the feeder 41 from shaking or swinging excessively during flight or operation, ensuring the stability and normal operation of the UAV.

[0110] The above scenario is applicable to the case where the external antenna structure is fixedly installed on the UAV body 1 or the external antenna structure does not need to be disassembled from the UAV body 1.

[0111] The above only uses embodiments to further illustrate the technical content of the present invention to make it easier for readers to understand, but it does not mean that the implementation manner of the present invention is limited to this. Any technical extension or re - creation based on the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. An external antenna structure for a drone, characterized in that: It includes an external antenna component (2) provided on a drone body (1). The external antenna component (2) includes an antenna housing (21) and a substrate (22) assembled inside the antenna housing (21). A radiation source is provided on the substrate (22) for receiving and transmitting wireless signals. The part of the substrate (22) with the radiation source is higher than the part of the drone body (1) with an in-built antenna structure (3). When the multi-functional drone performs a water surface cruising action, the part of the drone body (1) with the in-built antenna structure (3) will submerge into the water surface, while the part of the substrate (22) with the radiation source is higher than the water surface.

2. The external antenna structure for an unmanned aerial vehicle according to claim 1, wherein: The antenna housing (21) includes an antenna protective cover (211) and an antenna base (212) arranged in sequence from top to bottom. The part of the substrate (22) with the radiation source is located inside the antenna protective cover (211).

3. An external antenna structure for an unmanned aerial vehicle according to claim 2, characterized in that: One end of the substrate (22) is located inside the antenna protective cover (211), and the other end of the substrate (22) is located inside the antenna base (212).

4. An external antenna structure for an unmanned aerial vehicle according to claim 1, characterized in that: The external antenna structure further includes a feeding component (4). The feeding component (4) is arranged between the external antenna component (2) and the drone body (1), and the feeding component (4) can electrically connect the external antenna component (2) with the electrical components inside the drone body (1).

5. The external antenna structure for an unmanned aerial vehicle according to claim 4, characterized in that: The feeding component (4) includes a feeder line (41) and an antenna feeder plug (42) arranged at one end of the feeder line (41). The other end of the feeder line (41) extends into the antenna housing (21) and is electrically connected to the radiation source on the substrate (22). The antenna feeder plug (42) can be connected to a feeder socket (51) on the drone body (1).

6. An external antenna structure for an unmanned aerial vehicle according to claim 1, characterized in that: The external antenna structure further includes an antenna connection seat (6) provided on the drone body (1). The external antenna component (2) is arranged on the antenna connection seat (6). A connection component is provided between the antenna housing (21) and the antenna connection seat (6) to enable detachable connection between the two.

7. The external antenna structure for an unmanned aerial vehicle according to claim 6, characterized in that: The connection component includes a hook (7) rotatably connected to the antenna housing (21) and an elastic member (71) arranged between the hook (7) and the antenna housing (21). The elastic member (71) can keep the hook (7) in a state of clamping the antenna connection seat (6).

8. The external antenna structure for an unmanned aerial vehicle according to claim 7, wherein: The elastic member (71) includes an elastic spring. A first fixed groove (72) is provided on the hook (7), and a second fixed groove (213) corresponding to the first fixed groove (72) is provided on the antenna housing (21). The two ends of the elastic spring are respectively located in the corresponding first fixed groove (72) and second fixed groove (213).

9. The external antenna structure for an unmanned aerial vehicle according to claim 7, characterized in that: An avoidance opening (61) for avoiding the hook (7) is provided on one side of the antenna connection seat (6). A limiting component is provided between the antenna connection seat (6) and the antenna housing (21) to prevent the antenna housing (21) from disengaging from the avoidance opening (61). The limiting component includes a limiting groove (214) and a limiting protrusion (62) that can be inserted into the limiting groove (214).

10. A multi-functional unmanned aerial vehicle, characterized in that: Comprising a drone body (1) and an external antenna structure as described in any one of claims 1 to 9, an internal antenna structure (3) is provided inside the drone body (1), and the part of the substrate (22) having a radiation source is higher than the internal antenna structure (3).

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