Liquid grounding device and unmanned aerial vehicle

Abstract

The utility model discloses a liquid grounding device and an unmanned aerial vehicle. An unmanned aerial vehicle body is provided with the grounding device and supporting legs which are pressed on the ground in the landing condition. The grounding device comprises a conductive liquid bag body sealed with conductive liquid, a firing pin, a bag seat and a pin seat. According to the unmanned aerial vehicle, the grounding device and the supporting foot pressed on the ground in the landing condition are arranged on the unmanned aerial vehicle body, a bag seat or a needle seat of the grounding device is arranged on the supporting foot, and the bag seat is connected with the needle seat in a sliding mode; under the condition that the grounding device firing pin is inserted into the impact cavity to a deep position due to external force, the tip of the firing pin is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag body; and the conductive liquid flows downwards to a landing point of the needle seat or the bag seat to soak the connecting part and the ground below the connecting part, and the ground and the connecting part are moist, so that a relatively good grounding conductive effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle equipped with a liquid grounding device. Background Art

[0002] With the development of drone technology, its application scope is becoming more and more extensive. For example, photography, which is commonly used by ordinary people, is done by equipping a rotary-wing drone with a camera, remotely controlling the drone to cruise and take pictures at the same time through a mobile phone. For example, for building inspection and maintenance, it is necessary to equip the rotary-wing drone with a probe arm, and even equip the front end of the probe arm with a suction cup structure, so that it can be fixed on the surface of the building by extension and adsorption to perform inspection operations.

[0003] The general drones on the market include a body, a frame, a landing gear, a support arm and a rotor, etc., and are equipped with a control system and a power supply. The drone can be remotely controlled by a remote control or a mobile phone to take off, then cruise and perform operations, and land when the operation is completed or the power supply needs to be replaced.

[0004] For example, in the Chinese patent document “A UAV lightning protection detection mechanism, publication number CN114560094A”, the discharge wire is connected to the tripod; the discharge needle is connected to the discharge wire and is located on the side of the discharge wire away from the tripod; the discharge wire is connected to the tripod and the discharge needle is connected to the bottom. The overload current can be guided through the discharge needle to avoid the UAV body being electrocuted during the detection process, which is beneficial to ensure the normal use of the UAV body.

[0005] As mentioned above, drones need to be grounded for detection operations such as lightning protection and magnetic storm protection. Generally, the grounding device of drones is dry contact through landing gear or dedicated wires, resulting in poor contact grounding effect. Utility Model Content

[0006] The purpose of the invention of the utility model is to provide a drone to solve the above problems, which can soak the connection and the ground below to ensure a better grounding and conductive effect.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0008] A drone comprises a drone body, wherein the drone body is provided with a liquid grounding device (hereinafter referred to as the grounding device) and a support leg which is pressed against the ground in a landing situation; the grounding device comprises a conductive liquid bag body sealed with a conductive liquid, a striker, a bag seat and a needle seat, wherein a receiving chamber is arranged in the bag seat, the conductive liquid bag body is arranged in the receiving chamber, a striking chamber is arranged on the bag seat, the striking chamber extends vertically and is connected to the receiving chamber, the width of the striking chamber is smaller than the receiving chamber, a striker is arranged on the needle seat, the striker is arranged in the striking chamber, and the bag seat and the needle seat can be slidably connected up and down; the bag seat or the needle seat is arranged on the support leg; and, in a situation where the striker is inserted into the striking chamber to a deep position due to an external force, the tip of the striker is inserted into the receiving chamber for a certain length to pierce the conductive liquid bag body, and a liquid channel connected to the outside is arranged on the inner bottom of the receiving chamber (specifically, the inner bottom wall and / or the bottom of the inner side wall) so that the conductive liquid flows to the landing point of the needle seat or the bag seat, and the landing point can be conductively connected to the support leg.

[0009] Among them, the present application is to solve the grounding problem, so the legs are arranged to be conductively connected to the frame of the drone body, etc., for example, conductive legs that can conduct electricity are used. "The landing point can be conductively connected" means that when the bag seat and the needle seat are not conductors themselves, they are conductively connected through conductors, when they are both conductors, they are conductively connected to each other, and when one is a conductor and the other is not a conductor, the above two situations are combined to be conductively connected.

[0010] The upper end of the needle seat is connected to the support leg; the accommodating chamber is arranged at the lower end of the bag seat, the impact chamber is arranged at the upper end of the bag seat, the upper end of the bag seat is provided with a slideway section, the lower end of the needle seat is provided with a slide rail section, the slideway section is slidably connected with the slide rail section, and the striker is arranged at the lower end of the slide rail section or the needle seat; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end surface of the bag seat can be conductively connected to the support leg. The lower end outer wall of the bag seat (specifically the lower end side wall and / or bottom wall) is provided with a liquid channel that passes through the accommodating chamber. The support leg is a landing leg of the landing gear configured for the drone body.

[0011] As mentioned above, a grounding device and a support foot that is pressed against the ground in the landing situation are arranged on the drone body. When the striker of the grounding device is inserted into the impact cavity to a deep position due to external force, the tip of the striker is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag; the conductive liquid flows down to the landing point of the needle seat or the bag seat, soaking the connection and the ground below, and the ground and the connection are moist, ensuring a better grounding and conductive effect.

[0012] Based on the above solution, in an improved solution, the slideway section and the impact cavity are the same cavity, and the width of the cavity is adapted to the slideway section. In this way, the impact cavity is opened with a larger width and serves as the slideway section at the same time, avoiding the need to open multiple parts separately, which is conducive to processing, assembly and disassembly.

[0013] Based on the above scheme, in an improved scheme, a limit cavity with an outwardly expanded width is provided at the lower end of the impact cavity, and a limit segment is provided at the lower end of the slide rail segment, and the width of the outer edge of the limit segment is greater than the impact cavity. The cross section of the limit segment is triangular, rectangular, circular arc or elliptical arc, etc., so that it plays a limiting role, limits the outward pulling length, and stabilizes the hanging.

[0014] Based on the above solution, in an improved solution, the grounding device further includes an elastic member, which is arranged between the bag seat and the needle seat. In this way, the elastic member is compressed and elastic, so that it is better to maintain the initial outward pulling state, and it will be compressed to a certain length only when the force is greater than a certain threshold, which can better reduce the false triggering events.

[0015] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The drone of the utility model is provided with a grounding device and a support foot pressed against the ground in the landing situation on the drone body, a bag seat or a needle seat of the grounding device is arranged on the support foot, and the bag seat is slidably connected with the needle seat; when the striker of the grounding device is inserted into the impact cavity to a deep position due to an external force, the tip of the striker is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag; the conductive liquid flows down to the landing point of the needle seat or the bag seat, soaks the connection and the ground below, and the ground and the connection are moistened, thereby ensuring a better grounding and conductive effect.

[0017] 2. An elastic member is arranged between the bag seat and the needle seat, and the elastic member is compressed and elastic, so that it can be better maintained in the initial outward pulling state, and it will only be compressed to a certain length to puncture the conductive liquid bag when the force is greater than a certain threshold, which can effectively reduce false triggering events. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view structural schematic diagram of the UAV example 1 of the utility model.

[0019] Figure 2 yes Figure 1 An enlarged view of the grounding device.

[0020] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the grounding device.

[0021] Figure 4 yes Figure 3 Another perspective structural diagram of .

[0022] Figure 5 yes Figure 3 Another perspective structural diagram of the bag seat.

[0023] Figure 6 yes Figure 3 Schematic diagram of the needle holder structure from another perspective.

[0024] Figure 7 It is a schematic diagram of the exploded structure of the grounding device of UAV Example 2 of the utility model.

[0025] Figure 8 It is a schematic diagram of the internal structure of the grounding device of UAV Example 3 of the utility model.

[0026] Fig. 9 It is a schematic diagram of the internal structure of the grounding device of UAV Example 4 of the utility model.

[0027] Fig.10 It is a schematic diagram of the exploded structure of the grounding device of the UAV example 5 of the utility model.

[0028] Fig.11 yes Fig.10 Another perspective structural diagram of .

[0029] Fig.12 It is a schematic diagram of the exploded structure of the grounding device of UAV Example 6 of the utility model.

[0030] Fig.13 yes Fig.12 Schematic diagram of the internal structure of the bag seat.

[0031] In the accompanying drawings, 100, grounding device, 1, conductive liquid bag body, 2, bag seat, 3, needle seat, 31, striker, 4, spring. DETAILED DESCRIPTION

[0032] Example 1

[0033] See also Figure 1 , it is defined that the drone body has a horizontal direction a and a vertical direction, where the horizontal direction a is the horizontal direction and z is the vertical direction.

[0034] See also Figure 1-Figure 6The drone of the present embodiment 1 comprises a drone body, the drone body is provided with a grounding device 100 and a support leg pressed against the ground in the landing situation; the grounding device 100 comprises a conductive liquid bag body 1 sealed with conductive liquid, a striker 31, a bag seat 2 and a needle seat 3, the bag seat 2 is provided with a receiving cavity 21, the conductive liquid bag body 1 is arranged in the receiving cavity 21, the bag seat 2 is provided with a striker cavity 24, the striker cavity 24 extends vertically and is connected to the receiving cavity 21, the width of the striker cavity 24 is smaller than the receiving cavity 21, and the striker 31 is provided on the needle seat 3. , the striker 31 is arranged in the strike chamber 24, and the bag seat 2 and the needle seat 3 can be slidably connected to each other up and down; the bag seat 2 or the needle seat 3 is arranged on the support foot; and, when the striker 31 is inserted into the strike chamber 24 to a deep position due to external force, the tip of the striker 31 is inserted into the accommodating chamber for a certain length to pierce the conductive liquid bag body 1, and the inner bottom of the accommodating chamber 21 (specifically, the inner bottom wall and / or the bottom of the inner side wall) is provided with a liquid channel connected to the outside world so that the conductive liquid flows to the landing point of the needle seat 3 or the bag seat 2, and the landing point can be conductively connected to the support foot.

[0035] The drone body includes a body 1, a frame 11, a landing gear, a support arm 13 and a rotor 14, etc. The body 1 is equipped with a lithium battery pack and a circuit board of a controller, etc., and the rotor 14 is connected and controlled to start and stop via a standard cable. The drone body and its control are existing technologies and will not be repeated here; for example, the DJI drone on the market; for another example, the Chinese patent document "Press-bar landing drone landing mechanism and drone, announcement number CN219884123U", each downward pressure rod of its landing gear forms a landing fulcrum that approaches and contacts the vertical position directly below it The ground is fixed to support the drone body, so as to achieve horizontal landing on uneven and irregular ground; for another example, the Chinese patent document "A Crack Detection Drone, Announcement No. CN216509120U" takes the crack detection scheme of a four-rotor drone on a building as an example to illustrate that a probe arm and a crack detection mechanism are arranged on the drone body. The crack detection mechanism includes a mechanical working arm and a crack detector, etc., which can slide forward and backward and extend outward along the probe arm, and then realize crack detection through the crack detector. It is equipped with a landing gear for landing. This application improves the grounding device of the existing drone body and its installation on the landing gear support foot or separately configured special support foot structure, and takes the arrangement of 4 footrest assemblies on the four-rotor drone as an example to illustrate.

[0036] Conductive liquid is an existing technology; for example, the conductive liquid is salt water, which has better conductivity than dry contact during the duration t1 after being soaked and before being driven away. If the conductivity meets the requirements and the operation time is less than or equal to t1, it also meets the requirements; for another example, the conductive liquid is a viscous liquid full of conductive particles, which has better anti-driving properties. The conductive liquid bag can be made of silicone or rubber, put in the conductive liquid and bundled or heat-sealed, and the bag has a certain resilience and is placed in the accommodating cavity in an ellipsoidal shape. This is an existing technology; for example, a thin finger sleeve, put in the conductive liquid and bundled, the tip of the striker can be punctured within the range of 5-25mm; for another example, a balloon, the wall thickness is designed to be thicker, so that it has a certain puncture resistance, and it can be punctured within the range of 5-22mm; for another example, a condom, etc. Considering the width of the landing foot and the width of the accommodating cavity, the load of the drone, the cost of the mold for bag preparation, etc., the standard finger sleeve specification is the most suitable. As mentioned above, conductive liquid and conductive liquid bag are both existing technologies. This application applies them to landing legs. This application takes the application to drones as an example, and it can also be applied to other aerial or land equipment that require landing legs to press the ground to ground.

[0037] The support foot may be a landing foot 12 of a landing gear, such as Figure 1 As shown, at least one grounding device 100 is arranged on the four landing legs 12. This application takes the example that all the landing legs are arranged with grounding devices, and the grounding device 100 is threaded or welded to the landing legs 12. Similarly, referring to the aforementioned landing legs 12, a grounding leg dedicated to grounding can also be arranged separately, and its shape is similar to Figure 1 The lifting and lowering legs shown in the figure have basically the same shape and can be arranged at the periphery of the frame or just below the center. The grounding legs do not require very high supporting strength, but only require good conductivity and the ability to support a certain pressure to puncture the conductive liquid bag.

[0038] Moreover, the present application is to solve the grounding problem, therefore, "conductively connected to the support leg" actually refers to conductively connecting to the drone body (via the support leg), and the landing leg or the grounding leg is arranged to be conductively connected to the frame of the drone body, etc. For example, a conductive conductor is used as the landing leg or the grounding leg, and a conductive layer (such as a copper layer, etc.) is provided at the threaded connection or welding place between the support leg and the grounding device and is connected with a wire to connect to the frame of the drone body, etc.; Figure 1-Figure 6 As shown, this embodiment 1 is described by taking the outer walls of the bag seat and the needle seat as an example in which a conductive layer is arranged and the landing foot itself is conductive. On the other hand, "the landing point can be conductively connected to the foot" means that when the bag seat and the needle seat themselves are not conductors, they are conductively connected through a conductor, when they are both conductors, they are conductively connected by contact with each other, and when one is a conductor and the other is not a conductor, the above two situations are combined to be conductively connected.

[0039] In this embodiment 1, the upper end of the bag seat 2 is inserted into and threadedly connected to the end of the landing leg 12; the accommodating chamber 21 is arranged at the upper end of the bag seat 2, and the impact chamber 24 is arranged at the lower end of the bag seat 2. The lower end of the bag seat 2 is provided with a slideway section, and the upper end of the needle seat 3 is provided with a slide rail section. The slideway section and the slide rail section can be slidably connected up and down, and the striker 31 is arranged at the upper end of the needle seat; when the striker 31 is inserted into the impact chamber 24 to a deep position due to external force, the lower end surface of the needle seat 3 can be conductively connected to the landing leg 12. Among them, the opening of the accommodating chamber of this embodiment 1 is arranged at the axial end, as shown in the figure, and a plug can be arranged according to actual needs. The sliding connection between the slideway section and the slide rail section is an existing technology. For example, a slideway hole is provided at the bottom of the bag seat and the protruding slide rail section is adapted to realize the inner and outer sleeve rod sliding connection. Another example is to provide an annular slideway groove on the outer wall of the bag seat and adapt the protruding slide rail section to realize the sliding connection, or directly buy a slide rail kit on the market and install it on the outer wall of the bag seat and the needle seat to realize the sliding connection, etc. Corresponding to the round rod-shaped landing support, the accommodating cavity of this application is illustrated by a cylindrical shape as an example (other shapes such as a rectangular body, a sphere, an ellipsoid, etc.), and the liquid channel can radially penetrate the side wall of the accommodating cavity, or axially penetrate the needle seat, etc.; in this embodiment 1, the slide rail section is in the shape of a hollow cylinder, and the side wall of the slide rail section is provided with an opening that penetrates from top to bottom. As a liquid channel, the conductive liquid can flow down to the ground through the hollow cylinder and the opening and the upper end of the needle seat.

[0040] On the other hand, as shown in the figure, at least one axially through conductive opening is provided on the side wall of the bag seat 2. For example, four conductive openings are provided. Each conductive layer I 23 is arranged in the conductive opening to avoid the external protrusion affecting the connection with the ground support leg, and is folded inward to extend to the middle of the lower end surface of the bag seat. A conductive layer II 33 is arranged on the side wall of the needle seat, and its two ends are folded inward to extend on the upper end surface and the lower end surface, respectively. The circumferential length of the conductive layer II corresponds to that of the conductive layer I (for example, 10 mm), and the radial width of the conductive layer II on the upper end surface of the needle seat corresponds to the inward folded extension width of the conductive layer I (for example, 20 mm). At this time, the metal conductive layers I and II have good conductivity, and the bag seat and the needle seat themselves do not require conductivity, and can be made using existing technologies such as hard plastic silicone.

[0041] When in use, due to the axial opening and the end of the landing leg being used for blocking, the conductive liquid bag is first arranged in the bag seat, and then the bag seat is installed on the landing leg, and then the needle seat is hung on the bag seat by binding, gluing, etc. In this way, when subjected to a certain weight, for example, 0.5 kg weight is applied to the landing leg in this case, the needle seat is inserted inward to a deep depth, and the striker pierces the conductive liquid bag. For example, in the initial outward pulling state, the striker is 30 mm away from the conductive liquid bag and then moves inward and inserts 60 mm (inserts 30 mm into the accommodating cavity) to pierce the bag.

[0042] As mentioned above, a grounding device and a support foot that is pressed against the ground when landing are arranged on the drone body, and a bag seat of the grounding device is arranged on the support foot, and the bag seat is slidably connected to the needle seat; when the striker of the grounding device is inserted into the impact cavity to a deep position due to external force, the tip of the striker is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag; the conductive liquid flows down to the landing point of the needle seat, soaking the connection and the ground below, and the ground and the connection are moist, ensuring a better grounding and conductive effect.

[0043] Example 2

[0044] This embodiment 2 is an improvement on embodiment 1. For other matters not fully explained, please refer to the aforementioned embodiment 1.

[0045] See also Figure 1-Figure 6 In this embodiment 2, the slideway section and the impact cavity are the same cavity, and the width of the cavity is adapted to the slideway section. In this way, the impact cavity is opened with a larger width and used as the slideway section at the same time, avoiding the need to open multiple parts separately, which is convenient for processing, assembly and disassembly.

[0046] Example 3

[0047] This embodiment 3 is an improved solution of embodiment 1 or 2. For other matters not fully explained, please refer to the aforementioned embodiments 1-2.

[0048] See also Figure 1-Figure 6 In this embodiment 3, the upper end of the impact cavity 24 is provided with a limit cavity 22 with an outwardly expanded width, and the upper end of the slide rail section is provided with a limit segment, and the width of the outer edge of the limit segment is greater than the impact cavity, for example, the radial width is 5mm greater. The cross section of the limit segment is triangular, rectangular, circular arc or elliptical arc, etc., and is shown as a triangle in the figure, so that it plays a limit role, limits the outward pulling length, and stabilizes the hanging.

[0049] Example 4

[0050] The difference between this embodiment 4 and the aforementioned embodiments 1-3 lies in the striker structure. For other details not fully described, please refer to embodiments 1-3.

[0051] See also Figure 7 In this embodiment 4, in order to distinguish and explain the definition of the striker '31', at least one striker 'is arranged at the front end of the slide rail section. The striker has a smaller diameter, which can reduce the length, improve stability, and reduce the weight of the component.

[0052] Example 5

[0053] The difference between this embodiment 5 and the aforementioned embodiments 1-4 is that the bag seat is connected to the landing leg structure. For other unexplained details, please refer to embodiments 1-4.

[0054] See also Figure 8-Figure 9In the drone of the present embodiment 5, the landing legs 12 are inserted into and threadedly connected to the upper end of the bag seat 2, thus achieving a detachable connection.

[0055] See also Fig. 9 Based on the above examples, in the preferred improved example, the bag seat 2 is arranged with a hollow structure. Since the required strength is not high, the weight of the component can be reduced by reasonably arranging the hollow holes or hollow cavities 25. Similarly, other components such as the slide rail section can also be arranged.

[0056] Example 6

[0057] The difference between the present embodiment 6 and the embodiment 1 is that a connection structure between a needle holder and a ground support leg is adopted. For other matters not fully explained, please refer to the aforementioned embodiment.

[0058] See also Figure 10-11 , the drone of this embodiment 6, in order to distinguish and explain, the needle seat is defined as needle seat ', and the bag seat is defined as bag seat '. The upper outer wall of the needle seat '3' is arranged with threads to be threadedly connected to the landing leg. The accommodating chamber is arranged at the lower end of the bag seat '2', and the impact chamber is arranged at the upper end of the bag seat '2'. The upper end of the bag seat '2' is provided with a slide section, and the lower end of the needle seat '3' is provided with a slide rail section. The slide section and the slide rail section are slidably connected, and the striker is arranged at the lower end of the slide rail section or the needle seat '3'; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end face of the bag seat '2' can be conductively connected to the leg. Among them, the lower end outer wall of the bag seat '2' (specifically the lower end side wall and / or bottom wall) is provided with a liquid channel that passes through the accommodating chamber. Among them, the accommodating chamber is axially open, and a plug 201 is arranged to be threadedly connected to the axial opening, and liquid channels 203 and 202 are respectively opened on the inner side wall and the inner bottom wall of the accommodating chamber. The needle seat' and the bag seat' are both made of conductive materials, such as carbon fiber, aluminum alloy, etc. For example, the drone frame and landing legs are made of carbon fiber tubes; the case where the needle seat' and the bag seat' are both non-conductive can be referred to the aforementioned embodiments, and will not be described one by one here.

[0059] As mentioned above, a grounding device and a support foot that is pressed against the ground in the landing situation are arranged on the drone body, the needle seat of the grounding device is arranged on the support foot, and the bag seat is slidably connected to the needle seat; when the striker of the grounding device is inserted into the impact cavity to a deep position due to external force, the tip of the striker is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag; the conductive liquid flows down to the landing point of the bag seat, soaking the connection and the ground below, and the ground and the connection are moist, ensuring a better grounding and conductive effect.

[0060] Example 7

[0061] The difference between this embodiment 7 and embodiment 6 is that the accommodating cavity opening structure is adopted. For other matters not fully explained, please refer to the aforementioned embodiments.

[0062] See also Figure 12-13In this embodiment 7, in order to distinguish and explain that the bag seat is defined as bag seat "2", the side wall of the accommodating cavity 21 has a circumferential opening 204, and blocking holes 207 are provided on both sides of the circumferential opening. The configured sealing plate 205 is threadedly connected to the circumferential opening 204 with bolts. The axial width of the sealing plate is smaller than the circumferential opening by a certain distance, such as 10mm or 20mm. The sealing plate is installed directly opposite to the circumferential opening, and gaps are exposed on both sides of the upper and lower sides of the sealing plate to serve as a channel for the conductive liquid to flow out. In the preferred embodiment, in order to prevent the sealing plate from protruding from the outer wall of the bag seat, stepped grooves are provided on both sides of the circumferential opening so that the sealing plate is sunken instead of protruding outward.

[0063] Example 8

[0064] Based on the aforementioned embodiment 6 or 7, this embodiment 8 adopts the same cavity structure. For other matters not fully explained, please refer to the aforementioned embodiments.

[0065] See also Figure 10-13 In this embodiment 8, the slideway section and the impact cavity 24 are the same cavity, and the width of the cavity is adapted to the slideway section. In this way, the impact cavity is opened with a larger width and serves as the slideway section at the same time, avoiding the need to open multiple parts separately, which is convenient for processing, assembly and disassembly.

[0066] Example 9

[0067] Based on the aforementioned embodiments 6, 7, and 8, this embodiment 9 adopts a limit hook structure. For other matters not fully explained, please refer to the aforementioned embodiments.

[0068] See also Figure 10-13 In this embodiment 9, a limit cavity 22 with an outwardly expanded width is provided at the lower end of the impact cavity 24, and a limit segment is provided at the lower end of the slide rail segment. The width of the outer edge of the limit segment is greater than the impact cavity 24, for example, the radial width is 5 mm greater. The cross section of the limit segment is triangular, rectangular, circular arc or elliptical arc, etc., and is shown as a triangle in the figure. In this way, it plays a limiting role, limits the outward pulling length, and stabilizes the hanging.

[0069] Example 10

[0070] Based on any of the aforementioned embodiments 1-9, this embodiment 10 has an elastic force limiting structure. For other matters not fully described, please refer to the aforementioned embodiments.

[0071] See also Figure 1-Figure 13In this embodiment 10, the grounding device also includes an elastic member, and the elastic member is arranged between the bag seat (the aforementioned bag seat 2 or bag seat '2') and the needle seat (the aforementioned needle seat 3 or needle seat '3'). The elastic member can be a spring or a spring 4. The present application takes the spring 4 as an example for explanation. For better conductivity, the spring 4 is also made of aluminum alloy or copper. The spring can be made of copper sheet, etc. In the example where both the bag seat and the needle seat are non-conductors, the conductive layer is made of copper sheet. An inclined or arc-shaped copper spring can be arranged between the needle seat and the bag seat. It has good conductivity and also has a rebound effect. This copper spring is also an existing technology, which is explained here.

[0072] In this way, an elastic member is arranged between the bag seat and the needle seat, and the elastic member is compressed and elastic, so that it is better maintained in the initial outward pulling state, and it will be compressed to a certain length only when the force is greater than a certain threshold, which can effectively reduce the false triggering events. For example, in the initial outward pulling state, the tip of the striker is 30mm away from the accommodating cavity (bag body), and when inserted to the deep state, the tip of the striker is inserted into the accommodating cavity by 30mm (the insertion movement distance is 60mm). When the spring force is 1.5kg under the lifting and lowering foot, the tip of the striker is inserted into the accommodating cavity by 20mm, and the bag body is punctured within the range of 20-30mm when the tip of the striker is inserted into the accommodating cavity. If the pressure is less than 1.5kg, the puncture and release of the conductive liquid to ground will not be triggered.

[0073] Based on the above examples, in a preferred improved example, the conductive liquid uses a conductive glue viscous liquid. The conductive liquid flows down the legs to the ground, flows out and accumulates at the place where the legs connect to the ground, and solidifies on the surface after a period of time, ensuring a better grounding effect for a longer period of time. Moreover, it has a certain adhesive force, which helps to fix the drone to land stably, and is conducive to detection and other operations. Of course, compared with the take-off force of the drone, the adhesive force of the conductive glue viscous liquid is smaller, and the take-off pulling force of the drone is larger, so the legs can be pulled up to take off from the ground (especially on muddy ground).

[0074] It should be noted that, as in the above-mentioned embodiments 1-5, it is a bag seat on top scheme; as in the above-mentioned embodiments 6-9, it is a needle seat on top scheme, in which the components can be adjusted according to actual conditions, such as the needle seat and the bag seat' combination, such as the needle seat' and the bag seat combination, etc. Compared with the bag seat on top scheme, in the needle seat on top scheme, the accommodating cavity and the bag body are arranged at the bottom, which can better control the distance between them and the landing contact surface (the lower end surface of the bag seat at this time), and can be adjusted by touching the ground or raising them as needed. On the hard ground, the conductive liquid flows down at the higher part relative to the lower part, and the liquid needs to be consumed on the way. In order to achieve the same effect at the landing connection, the amount of liquid carried will increase, and the weight is one of the main factors affecting the load of the drone, which is not conducive to the lightweight of the component. When the needle seat is arranged on the top, although the liquid does not pass through the contact surface between the needle seat and the bag seat, the conductivity may be slightly worse than the wet dry contact, but it can be solved by using a copper sheet with better conductivity to make the conductivity meet the requirements. Placing the needle seat on the top will prevent the spring, shrapnel or conductive layer from being soaked, causing them to oxidize or rust quickly. Moreover, when using viscous liquids, the entire needle seat will be soaked and the parts on it will be difficult to clean. Therefore, in actual use, you can choose a suitable solution to solve the grounding problem based on factors such as topography, real-time weather, conductive liquid conditions, and load.

[0075] Embodiment 11

[0076] like Figure 1 As shown, the above-mentioned embodiments 1-10 take the fixed connection structure of the landing legs as an example, and the fixed connection structure can be realized by existing welding or bolt connection. Of course, the landing legs or grounding legs can also be arranged in a foldable connection, which is also an existing technology. This embodiment 11 will be briefly described as follows.

[0077] In this embodiment 11, the foldable connection structure of the support leg is realized by using an existing foldable self-locking hinge component. For example, the foldable self-locking hinge commonly seen in daily life can be rotated at 0 degrees, 90 degrees and 180 degrees and self-locked and fixed. It is connected between the frame (or support arm) and the support leg to realize manually controlled folding connection. For example, the Chinese invention patent application "A foldable UAV landing gear and its locking device, publication number CN108860576A" applies the foldable structure to this application. The folding locking device is connected to the frame chassis or support arm, and is connected to the support leg through a folding rod, which can realize horizontal bending, folding and storage. For example, the Chinese invention patent application "A UAV landing gear and UAV, publication number CN111532420A" applies the foldable structure to this application, connected to the frame, and can realize electrically controlled folding connection of the support leg.

[0078] It should be noted that the examples of the above embodiments can be combined with one or more of them according to actual needs, such as the combination of a needle seat and a bag seat, etc., and multiple examples use a set of drawings of combined technical features, which will not be described one by one here. The landing mechanism of the drone in the above embodiment is mainly used for drones, and it is also suitable for use in other equipment in the same / equivalent scenarios.

[0079] It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0080] The above description is a detailed description and illustration of the preferred feasible embodiments of the utility model, but these descriptions are not intended to limit the scope of protection required by the utility model. All equivalent changes or modified changes completed under the technical teachings suggested by the utility model should fall within the scope of patent protection covered by the utility model.

Claims

1. A liquid grounding device, comprising a conductive liquid bag sealed with a conductive liquid, characterized in that: It also includes a bag seat, a needle seat and a striker, wherein a accommodating cavity is arranged in the bag seat, the conductive liquid bag body is arranged in the accommodating cavity, a striker cavity is arranged on the bag seat, the striker cavity extends vertically and is connected to the accommodating cavity, the width of the striker cavity is smaller than the accommodating cavity, a striker is arranged on the needle seat, the striker is arranged in the striker cavity, and the bag seat and the needle seat can be slidably connected up and down; the bag seat or the needle seat can be arranged on a support leg that is pressed against the ground in a landing situation; and, in a situation where the striker is inserted into the striker cavity to a deep position due to an external force, the tip of the striker is inserted into the accommodating cavity for a certain length to pierce the conductive liquid bag body, and a liquid channel connected to the outside is arranged on the inner bottom of the accommodating cavity so that the conductive liquid flows to the landing point of the bag seat or the needle seat, and the landing point can be conductively connected to the support leg.

2. The liquid grounding device according to claim 1, characterized in that: The upper end of the bag seat can be connected to a support leg which is arranged on the drone body and is pressed against the ground in the landing situation; the accommodating chamber is arranged at the upper end of the bag seat, and the impact chamber is arranged at the lower end of the bag seat; a slideway section is provided at the lower end of the bag seat, and a slide rail section is provided at the upper end of the needle seat; the slideway section and the slide rail section can be slidably connected up and down, and the striker is arranged at the upper end of the slide rail section or the needle seat; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end face of the needle seat can be conductively connected to the support leg; wherein, the slideway section and the impact chamber are the same cavity, and the width of the cavity is adapted to the slide rail section; wherein, a limit cavity with an outwardly expanded width is provided at the upper end of the impact chamber, and a limit section is provided at the upper end of the slide rail section, and the width of the outer edge of the limit section is greater than the impact chamber; wherein, the slide rail section is hollow cylindrical, and the side wall of the slide rail section is provided with an opening which passes through from top to bottom.

3. The liquid grounding device according to claim 2, characterized in that: The upper end of the needle seat can be connected to a support leg which is arranged on the drone body and is pressed against the ground in the landing situation; the accommodating chamber is arranged at the lower end of the bag seat, and the impact chamber is arranged at the upper end of the bag seat; a slideway section is provided at the upper end of the bag seat, and a slide rail section is provided at the lower end of the needle seat; the slideway section and the slide rail section can be slidably connected up and down, and the striker is arranged at the lower end of the slide rail section or the needle seat; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end face of the bag seat can be conductively connected to the support leg; wherein, the slideway section and the impact chamber are the same cavity, and the width of the cavity is adapted to the slide rail section; wherein, a limit cavity with an outwardly expanded width is provided at the lower end of the impact chamber, and a limit section is provided at the lower end of the slide rail section, and the width of the outer edge of the limit section is greater than the impact chamber; wherein, a liquid channel which passes through the accommodating chamber is provided on the outer wall of the lower end of the bag seat.

4. The liquid grounding device according to claim 2 or 3, characterized in that: The utility model also comprises an elastic member, and the elastic member is arranged between the bag seat and the needle seat.

5. A drone, comprising a drone body, the drone body being provided with a liquid grounding device and legs pressed against the ground in a landing situation; characterized in that: The liquid grounding device includes a conductive liquid bag body sealed with conductive liquid, a striker, a bag seat and a needle seat, wherein a accommodating chamber is arranged in the bag seat, the conductive liquid bag body is arranged in the accommodating chamber, a striker chamber is arranged on the bag seat, the striker chamber extends vertically to be connected to the accommodating chamber, the width of the striker chamber is smaller than the accommodating chamber, a striker is arranged on the needle seat, the striker is arranged in the striker chamber, and the bag seat and the needle seat can be slidably connected up and down; the bag seat or the needle seat is arranged on the support foot; and, in the case where the striker is inserted into the striker chamber to a deep position due to external force, the tip of the striker is inserted into the accommodating chamber for a certain length to pierce the conductive liquid bag body, and a liquid channel connected to the outside is arranged on the inner bottom of the accommodating chamber so that the conductive liquid flows to the landing point of the needle seat or the bag seat, and the landing point can be conductively connected to the support foot.

6. The drone according to claim 5, characterized in that: The upper end of the bag seat is connected to the support leg; the accommodating chamber is arranged at the upper end of the bag seat, and the impact chamber is arranged at the lower end of the bag seat. A slide section is provided at the lower end of the bag seat, and a slide rail section is provided at the upper end of the needle seat. The slide section is slidably connected with the slide rail section, and the striker is arranged at the upper end of the slide rail section or the needle seat; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end surface of the needle seat can be conductively connected to the support leg.

7. The drone according to claim 6, characterized in that: The slide section and the impact cavity are the same cavity, and the width of the cavity is adapted to the slide rail section; wherein, a limit cavity with an outwardly expanded width is provided at the upper end of the impact cavity, and a limit section is provided at the upper end of the slide rail section, and the width of the outer edge of the limit section is greater than the impact cavity; wherein, the slide rail section is hollow cylindrical, and the side wall of the slide rail section is provided with an opening that passes through from top to bottom.

8. The drone according to claim 5, characterized in that: The upper end of the needle seat is connected to the support leg; the accommodating chamber is arranged at the lower end of the bag seat, and the impact chamber is arranged at the upper end of the bag seat. A slide section is provided at the upper end of the bag seat, and a slide rail section is provided at the lower end of the needle seat. The slide section and the slide rail section can be slidably connected up and down, and the striker is arranged at the lower end of the slide rail section or the needle seat; when the striker is inserted into the impact chamber to a deep position due to external force, the lower end surface of the bag seat can be conductively connected to the support leg.

9. The drone according to claim 8, characterized in that: The slide section and the impact cavity are the same cavity, and the width of the cavity is adapted to the slide rail section; wherein, a limit cavity with an outwardly expanded width is provided at the lower end of the impact cavity, and a limit section is provided at the lower end of the slide rail section, and the width of the outer edge of the limit section is greater than that of the impact cavity; wherein, a liquid channel is provided on the outer wall of the lower end of the bag seat that passes through the accommodating cavity.

10. The drone according to any one of claims 6 to 9, characterized in that: The liquid grounding device also includes an elastic member, which is arranged between the bag seat and the needle seat; wherein the support foot is a landing support foot of a landing gear configured for the drone body; wherein the conductive liquid is a conductive glue viscous liquid.

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