Unmanned aerial vehicle and air inlet functional lip component thereof

Abstract

The air inlet functional lip component of the unmanned aerial vehicle comprises a functional lip, the outer end of a functional lip body is provided with an outer side connecting part, and the inner end of the functional lip body is provided with an inner side connecting part; the outer side connecting part comprises an elastic shifting piece fixed to the outer end of the functional lip body, the free end of the elastic shifting piece is provided with a locking block, and the locking block is matched with a locking groove formed in the outer wall of the air inlet channel; the inner side connecting part comprises a positioning pin, and the positioning pin is matched with a positioning sleeve on the inner wall of the air inlet channel; the locking block on the elastic shifting piece is pressed to the inner side of the outer wall of the air inlet channel, moves forwards and then is inserted into the locking groove to be locked, so that the positioning pin is inserted into the positioning sleeve while the functional lip body and the outer wall of the air inlet channel are fixed, and the functional lip body and the inner wall of the air inlet channel are fixed. The component can realize quick disassembly and assembly, connection stability and sealing performance of the lip, and the maintenance efficiency and reliability of the unmanned aerial vehicle are improved. The invention further discloses an unmanned aerial vehicle which has the same advantages.

Description

Technical Field

[0001] This invention belongs to the field of unmanned aerial vehicle (UAV) manufacturing technology, and in particular relates to a UAV and its air intake lip component. Background Technology

[0002] The air intake lip of a drone is the annular structure at the very front of the air intake. It is the most critical part of the air intake design, directly affecting the airflow efficiency and engine performance. During drone flight, the air intake lip is prone to icing, which can lead to turbulent airflow, reduced air intake efficiency, and further degraded engine performance. More seriously, ice falling off the lip can damage the engine, causing it to stall in mid-air. Therefore, anti-icing systems are installed on the air intake lips.

[0003] Currently, the most widely used anti-icing systems are pneumatic and electric. Pneumatic systems draw high-temperature gases from the engine to heat the intake lip. The biggest advantage of this method is its high reliability, but it also suffers from complex structure, uneven heat distribution, and reduced engine thrust. Electric anti-icing systems, on the other hand, are gradually replacing pneumatic systems due to their simple structure, energy efficiency, and rapid response. In electric anti-icing systems, the heating components are typically bonded to the inside of the intake lip. If the heating components experience detachment, short circuits, or open circuits during field use, on-site repair is impossible. Instead, the entire intake lip containing the heating components must be removed and returned to the factory for repair. However, most existing UAV air intake lips are connected to the inner and outer walls of the air intake using high-strength bolts and rivets, which are fixed connections that are difficult to disassemble. This presents the following problems: the disassembly and assembly process is complex, requiring the use of special tools to remove multiple bolts and rivets, which is time-consuming, especially during field operations or emergency repairs, where efficiency is even lower. In addition, such repeated disassembly and assembly operations can easily lead to wear on the connection parts, posing certain disassembly and assembly risks, affecting the stability and sealing of the overall structure, and thus reducing the reliability of the air intake operation. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a drone and its air intake lip component, which enables rapid disassembly and assembly of the lip, connection stability, and better sealing, thereby improving the maintenance efficiency and reliability of the drone.

[0005] The present invention provides an air intake functional lip component for a drone, including a functional lip with a U-shaped groove structure, wherein the functional lip includes a functional lip body;

[0006] The outer end of the functional lip body has an outer connecting portion for connecting to the outer wall of the air intake, and the inner end has an inner connecting portion for connecting to the inner wall of the air intake.

[0007] The outer connecting part includes an elastic lever fixed to the outer end of the functional lip body, and the free end of the elastic lever has a locking block, which matches the locking groove opened on the outer wall of the air intake.

[0008] The inner connecting part includes a positioning pin fixed to the inner end of the functional lip body, and the positioning pin matches the positioning sleeve fixed on the inner wall of the air intake.

[0009] After the locking block on the elastic lever is pressed against the inner side of the outer wall of the air intake and moves forward, it is inserted into the locking groove and locked, so as to fix the functional lip body to the outer wall of the air intake. At the same time, the positioning pin is inserted into the positioning sleeve to fix the functional lip body to the inner wall of the air intake.

[0010] Preferably, in the above-mentioned air intake functional lip component of the UAV, the portion of the functional lip body that contacts the inner wall of the air intake has a sealing component.

[0011] Preferably, in the above-mentioned air intake lip component of the UAV, the sealing component is an O-ring, and the O-ring is disposed in an Ω-shaped groove opened in the part of the functional lip body for contacting the inner wall of the air intake, and the outer width of the Ω-shaped groove is smaller than the diameter of the O-ring.

[0012] Preferably, in the air intake lip component of the above-mentioned UAV, the inner surface of the locking groove is further provided with a bushing, and the angle α between the center line of the locking groove and the outer wall of the air intake is not greater than 90°.

[0013] Preferably, in the air intake functional lip component of the above-mentioned UAV, the positioning pin is Z-shaped and extends along the installation direction of the functional lip body.

[0014] Preferably, in the air intake functional lip component of the above-mentioned UAV, the positioning pin is fixed to the inner wall of the functional lip body by a countersunk high-strength bolt, and the end of the positioning pin is provided with a guide cone surface.

[0015] Preferably, in the air intake lip component of the above-mentioned UAV, the positioning sleeve is L-shaped, and the inner wall of the positioning sleeve is provided with a tapered guide groove extending along its circumference for cooperating with the guide cone surface.

[0016] Preferably, in the above-mentioned air intake lip component of the UAV, the elastic lever is a spring lever, and the locking block protrudes outward. The outer side of the locking block is spherical and the inner side is cylindrical. The angle between the locking block and the free end of the elastic lever is equal to the angle α between the center line of the locking groove and the outer wall of the air intake. The angle β between the movement direction of the locking block and the sliding direction of the positioning pin is 90°-arcsin((x*cosα) / t), where x is the compression of the sealing component and t is the thickness of the outer wall of the air intake.

[0017] Preferably, in the above-mentioned air intake functional lip component of the UAV, the functional lip body is a titanium alloy functional lip body made by 3D printing, and the functional lip body is circumferentially arranged with a partition frame.

[0018] The present invention provides an unmanned aerial vehicle (UAV) including an air intake lip component as described in any of the above claims, wherein the air intake lip component is connected to the outer wall of the air intake via at least three of the outer connecting portions and to the inner wall of the air intake via at least four of the inner connecting portions.

[0019] As described above, the intake duct functional lip component provided by the present invention includes a functional lip with a U-shaped groove structure. The functional lip includes a functional lip body; the outer end of the functional lip body has an outer connecting portion for connecting to the outer wall of the intake duct, and the inner end has an inner connecting portion for connecting to the inner wall of the intake duct; the outer connecting portion includes an elastic lever fixed to the outer end of the functional lip body, and the free end of the elastic lever has a locking block, which matches a locking groove formed on the outer wall of the intake duct; the inner connecting portion includes a locking portion fixed to the outer end of the functional lip body. The positioning pin at the inner end of the functional lip body matches a positioning sleeve fixed on the inner wall of the air intake. After the locking block on the elastic lever is pressed against the inner side of the outer wall of the air intake and moves forward, it inserts into the locking groove and locks. This achieves simultaneous fixation of the functional lip body to the outer wall of the air intake and the positioning pin being inserted into the positioning sleeve, thus fixing the functional lip body to the inner wall of the air intake. Therefore, it enables quick assembly and disassembly of the lip, connection stability, and better sealing, improving the maintenance efficiency and reliability of the drone. The drone provided by this invention, due to including the aforementioned air intake functional lip component, has the same advantages. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the air intake of a drone.

[0022] Figure 2 A schematic diagram before installation of an embodiment of the air intake functional lip component for a drone provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the O-ring installation.

[0024] Figure 4 This is a schematic diagram showing the arrangement of the outer and inner connecting parts on the functional lip body;

[0025] Figure 5 A diagram showing the functional lip in place;

[0026] Figure 6 This is a force diagram showing the force distribution when the functional lip is properly installed. Detailed Implementation

[0027] The core of this invention is to provide a drone and its air intake lip component, which can achieve quick disassembly and assembly of the lip, connection stability and better sealing, thereby improving the maintenance efficiency and reliability of the drone.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] An embodiment of the functional lip component of the air intake of a drone provided by the present invention is as follows: Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the air intake of a drone. Figure 2This is a schematic diagram before installation of an embodiment of the air intake functional lip component of a UAV provided by the present invention. The air intake functional lip component of the UAV may include a functional lip 1 with a U-shaped groove structure. This U-shaped groove structure can ensure that the airflow is not blocked during the air intake process. The functional lip 1 includes a functional lip body 11. It can be seen that the functional lip body 11 has a streamlined shape. No matter where the gas flows from in front, it will not block the gas. This functional lip body not only needs to have a sufficiently smooth outer surface to meet the aerodynamic performance of the air intake, but also needs to have sufficient rigidity and strength so that it will not undergo excessive deformation and damage under complex aerodynamic loads. At the same time, it can also withstand a certain high temperature. Moreover, the structure of the functional lip body is relatively complex and cannot be processed by traditional CNC machining. Therefore, the functional lip body can preferably be a titanium alloy functional lip body made by 3D printing. Furthermore, the circumferential direction of the functional lip body can be arranged with a partition to increase its rigidity.

[0030] The outer end of the functional lip body 11 has an outer connecting portion 12 for connecting to the outer wall 2 of the air intake passage. Figure 2 The outer wall panel of the air intake shown has an inner connecting portion 13 at its inner end for connecting to the inner wall 3 of the air intake. Figure 2 The inner wall cylinder of the air intake is shown. It should be noted that the outer connecting part 12 only needs to ensure that the functional lip body 11 is firmly connected to the outer wall 2 of the air intake. There is no restriction on its specific connection method. Similarly, the inner connecting part 13 only needs to ensure that the functional lip body 11 is firmly connected to the inner wall 3 of the air intake. There is no restriction on its specific connection method either.

[0031] The aforementioned outer connecting part 12 may include an elastic lever 121 fixed to the outer end of the functional lip body 11. The outer end refers to the end used to connect to the outer wall 2 of the air intake. This elastic lever 121 can bend to a certain extent under the action of external force and has the elasticity to return to its original shape for easy operation. The free end of the elastic lever 121 has a locking block 122. The locking block 122 matches the locking groove 21 opened on the outer wall 2 of the air intake. The locking block 122 can be tightly inserted into the locking groove 21 by using the elastic lever 121 to achieve tight fixation. The shapes of the two must match to achieve a perfect match, prevent air leakage, and ensure easy insertion. In this way, a firm connection between the functional lip body 11 and the outer wall 2 of the air intake is achieved.

[0032] The inner connecting part 13 may include a positioning pin 131 fixed to the inner end of the functional lip body 11. The inner end refers to the end used to connect to the inner wall 3 of the air intake. The positioning pin 131 matches the positioning sleeve 31 fixed on the inner wall 3 of the air intake. The positions of the positioning pin 131 and the positioning sleeve 31 must match each other to ensure that after the positioning pin 131 is inserted into the positioning sleeve 31, the functional lip body 11 and the inner wall 3 of the air intake are in close contact to avoid air leakage and to prevent compression.

[0033] After the locking block 122 on the elastic lever 121 is pressed to the inside of the outer wall 2 of the air intake and moves forward, it is inserted into the locking groove 21 and locked, so as to fix the functional lip body 11 to the outer wall 2 of the air intake. At the same time, the positioning pin 131 is inserted into the positioning sleeve 31 to fix the functional lip body 11 to the inner wall 3 of the air intake. It can be seen that this way, the functional lip body 11 can be firmly connected to the outer wall 2 and the inner wall 3 of the air intake through a simple action. Moreover, this kind of cooperation can ensure that no part will fall off during subsequent service.

[0034] As described above, in the embodiments of the air intake functional lip component provided by the present invention, the functional lip includes a functional lip body with a U-shaped groove structure. The outer end of the functional lip body has an outer connecting portion for connecting to the outer wall of the air intake, and the inner end has an inner connecting portion for connecting to the inner wall of the air intake. The outer connecting portion includes an elastic lever fixed to the outer end of the functional lip body, and the free end of the elastic lever has a locking block that matches a locking groove opened on the outer wall of the air intake. The inner connecting portion includes a positioning pin fixed to the inner end of the functional lip body, and the positioning pin matches a positioning sleeve fixed on the inner wall of the air intake. After the locking block on the elastic lever is pressed to the inner side of the outer wall of the air intake and moves forward, it is inserted into the locking groove and locked. This achieves the fixation of the functional lip body to the outer wall of the air intake, while the positioning pin is inserted into the positioning sleeve to achieve the fixation between the functional lip body and the inner wall of the air intake. Therefore, it can achieve quick disassembly and assembly of the lip, connection stability, and better sealing, thereby improving the maintenance efficiency and reliability of the UAV.

[0035] In a specific embodiment of the air intake functional lip component of the aforementioned UAV, the portion of the functional lip body 11 that contacts the inner wall 3 of the air intake can have a sealing component 4. This allows for better sealing at that location, better preventing air leakage and further improving the sealing performance between the functional lip body and the inner wall of the air intake. In a specific example, refer to... Figure 3 , Figure 3This is a schematic diagram of O-ring installation. The sealing component 4 is preferably an O-ring 41, and the O-ring 41 is disposed within an Ω-shaped groove 42 in the part of the functional lip body 11 that contacts the inner wall 3 of the intake passage. The outer width of the Ω-shaped groove 42 is preferably smaller than the diameter of the O-ring 41. It should be noted that this O-ring must be heat-resistant, and its material can be fluororubber, silicone rubber, or polytetrafluoroethylene. The aforementioned diameter fit ensures that the O-ring must be compressed during installation, and that it will not fall off after installation. When the functional lip body is installed in place, the O-ring is compressed by the functional lip body and the inner wall of the intake passage, resulting in elastic deformation. This fills the gap between the functional lip body and the inner wall of the intake passage, forming a more effective seal, and preventing loosening or detachment under vibration loads.

[0036] In another specific embodiment of the air intake lip component of the aforementioned UAV, a bushing 22 may also be provided on the inner surface of the locking groove 21, and the angle α between the centerline of the locking groove 21 and the outer wall 2 of the air intake is not greater than 90°. Furthermore, the bushing 22 may be selected as a steel bushing, which can both increase its wear resistance and prevent potential corrosion. Of course, other materials may also be selected according to actual needs, and there are no restrictions here.

[0037] In another specific embodiment of the air intake functional lip component of the aforementioned UAV, the locating pin 131 is preferably Z-shaped and extends along the mounting direction of the functional lip body 11. It should be noted that the mounting direction of this functional lip body 11 is... Figure 2The center refers to the rightward direction. This Z-shape ensures that the bottom edge is firmly fixed to the surface of the functional lip body 11, and the connection between the bottom and top edges has a certain height, which matches the height of the positioning sleeve 31, achieving convenient and effective insertion. Furthermore, the positioning pin 131 can preferably be fixed to the inner wall of the functional lip body 11 using a countersunk high-strength bolt, and the end of the positioning pin 131 is provided with a guide cone surface. This guide cone surface gradually narrows in diameter along the installation direction to facilitate insertion. Based on this, the shape of the positioning sleeve 31 can preferably be L-shaped. This shape can ensure that it is firmly fixed to the inner wall 3 of the air intake. Moreover, the zigzag shape can ensure that the positioning sleeve 31 is at a certain height, which can match the height of the positioning pin 131. The inner wall of the positioning sleeve 31 is provided with a tapered guide groove extending along its circumference for engaging with the aforementioned guide cone surface. This tapered guide groove can also gradually decrease in diameter along the installation direction, which also facilitates insertion and improves insertion guidance. Because in the initial stage of insertion, the part of the tapered guide groove that contacts the guide cone surface has a larger diameter. As insertion progresses, the two gradually fit together tightly until finally installed in place, where all parts can make tight contact, thereby ensuring sufficient sealing. It can be seen that this shape-fitting method not only facilitates installation but also effectively guarantees sealing performance. Of course, other fitting methods can also be used, which are not limited here.

[0038] In a preferred embodiment of the air intake functional lip component of the aforementioned UAV, the elastic lever 121 is preferably a spring lever, which can be made of 65Mn spring steel to have recoverable elastic deformation capability, and the locking block 122 protrudes outward, with the outer side of the locking block 122 being spherical and the inner side being cylindrical. The bottom edge of this elastic lever 121 can be fixed to the inner wall of the functional lip body with countersunk bolts. The included angle between the locking block 122 and the free end of the elastic lever 121 is equal to the included angle α between the center line of the locking groove 21 and the outer wall 2 of the air intake. The included angle β between the movement direction of the locking block 122 and the sliding direction of the positioning pin 131 is 90°-arcsin((x*cosα) / t), where x is the compression amount of the sealing component 4 and t is the thickness of the outer wall 2 of the air intake. When the lip is installed, the locking block 122 slides on the inner side of the outer wall 2 of the air intake, pushing the elastic lever 121 to deform elastically until the locking block 122 is engaged in the locking groove 21, achieving automatic locking. It should be noted that if α is 90°, x is 0.1mm to 0.2mm, and t is 4mm to 8mm, then the range of this angle β is 82° to 88°. However, if α is not 90°, then the range of this angle β is not 82° to 88°. The core of this scheme is that the angle β cannot be greater than or equal to 90°, otherwise it cannot play a fixing role and may fall off under the vibration load of the aircraft.

[0039] In one embodiment of the UAV provided by the present invention, an air intake functional lip member as described in any of the above claims is included. The air intake functional lip member is connected to the outer wall 2 of the air intake via at least three outer connecting portions 12, and to the inner wall 3 of the air intake via at least four inner connecting portions 13. See specific references. Figure 4 , Figure 4 This is a schematic diagram showing the arrangement of the outer and inner connecting parts on the functional lip body. As can be seen, Figure 4 The inner connecting parts 13 are located at the top, bottom, left and right positions of the functional lip body, respectively, to restrict the degree of freedom of the functional lip body in the lateral and longitudinal directions. The outer connecting parts 12 are located on both sides and above the functional lip body, respectively, to restrict the degree of freedom of the functional lip body in the yaw direction.

[0040] In a specific example, when installing the functional lip, firstly, press the free ends of the three spring tabs on the functional lip into the inner side of the outer wall of the intake manifold, causing the spring tabs to elastically deform and slowly push the functional lip in. When the locating pins approach the locating sleeve, finely adjust the position of the functional lip so that the four locating pins insert into the locating sleeve. Then, continue pushing the functional lip in, causing the O-ring seal to elastically deform. Finally, when the functional lip is in place, the spring tabs elastically recover, and the locking blocks of the spring tabs automatically fall into the locking grooves. The functional lip is then in place and locked. At the same time, the O-ring seal is also compressed between the functional lip and the intake manifold, achieving the function of sealing the intake manifold. Figure 5 As shown, Figure 5 This diagram illustrates the installation of the functional lip. After the functional lip is installed, it is secured by the positioning components (positioning pins and positioning sleeves), locking components (elastic parts, locking blocks, and locking grooves), and O-rings, ensuring that the functional lip will not detach due to aerodynamic or vibration loads during aircraft flight.

[0041] After the functional lip is installed in place, the O-ring is compressed and undergoes elastic deformation, generating a compressive elastic force that preemptively pushes the functional lip out. Due to the positioning component, the direction of this compressive elastic force is the sliding direction of the positioning pin. However, because of the locking action of the locking block, the functional lip will not be pushed out. Simultaneously, the movement direction of the locking block and the sliding direction of the positioning pin can form an 85° angle. Figure 6 As shown, Figure 6This diagram illustrates the forces acting on the functional lip when it is properly installed. During flight, if the locking block tends to move inward under vibration load, a force perpendicular to the locking groove wall will be generated between the locking block and the locking groove. This force can be decomposed into a tension force opposite to the compressive elastic force and a frictional force parallel to the locking groove wall. The tension force causes the functional lip to tend to move along the installation direction, intensifying the compression of the O-ring. The compressive elastic force generated by the O-ring also increases, eventually reaching a balance with the tension force, preventing the locking block from sliding out of the locking groove. Simultaneously, the generated frictional force also prevents the locking block from sliding out of the locking groove.

[0042] When disassembling the functional lip, simply press the locking blocks of the three spring levers inward simultaneously by hand. While pressing the locking blocks, push the functional lip in the installation direction. Once the locking blocks are completely dislodged from the locking groove, pull the functional lip out.

[0043] In summary, the UAV air inlet functional lip component provided in this application meets both the maintainability and reliability requirements of the UAV. Furthermore, the positioning components, locking components, and O-rings in this structure not only ensure precise installation of the functional lip, guaranteeing the aerodynamic performance of the air inlet inner wall meets requirements, but also prevent the functional lip from detaching during UAV flight, thus ensuring the safety of the UAV. The advantages of the aforementioned UAV air inlet functional lip component are as follows:

[0044] (1) Quick disassembly and assembly without tools: Locking and unlocking are achieved by the elastic deformation of the spring lever. During disassembly and assembly, only manual pushing / pulling is required, without any tools. The operation time is reduced by more than 95% compared with the existing bolt structure, which meets the maintenance requirements of UAVs.

[0045] (2) High positioning accuracy: Four sets of conical positioning components are used to restrict the degree of freedom of the functional lip in both the lateral and longitudinal directions, ensuring that the longitudinal and lateral positioning errors after the functional lip is installed do not exceed 0.1mm, which meets the accuracy requirements of the intake aerodynamic performance for the lip position;

[0046] (3) Reliable connection: The locking block and locking groove of the spring lever are in surface contact fit, the spring force continuously acts on the locking block, and the sliding direction of the positioning pin and the movement direction of the locking block maintain a certain angle, which works together with the O-ring seal to ensure that the functional lip does not loosen or fall off under the conditions of drone flight vibration and airflow impact;

[0047] (4) Reduce component wear: The positioning pin, positioning sleeve and spring pawl are all smooth transition structures, which reduce frictional resistance and impact during disassembly and assembly. The elastic deformation of the spring pawl can buffer the force during disassembly and assembly, avoid wear and deformation of components, and extend service life.

[0048] (5) Good sealing performance: A high-temperature resistant O-ring is embedded in the Ω-shaped groove on the inner wall of the functional lip. When the functional lip is installed, the O-ring is squeezed to achieve a seal between the functional lip and the inner wall of the air intake.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A functional lip component for the air intake of an unmanned aerial vehicle (UAV), characterized in that, Includes a functional lip with a U-shaped groove structure, wherein the functional lip includes a functional lip body; The outer end of the functional lip body has an outer connecting portion for connecting to the outer wall of the air intake, and the inner end has an inner connecting portion for connecting to the inner wall of the air intake. The outer connecting part includes an elastic lever fixed to the outer end of the functional lip body, and the free end of the elastic lever has a locking block, which matches the locking groove opened on the outer wall of the air intake. The inner connecting part includes a positioning pin fixed to the inner end of the functional lip body, and the positioning pin matches the positioning sleeve fixed on the inner wall of the air intake. After the locking block on the elastic lever is pressed against the inner side of the outer wall of the air intake and moves forward, it is inserted into the locking groove and locked, so as to fix the functional lip body to the outer wall of the air intake. At the same time, the positioning pin is inserted into the positioning sleeve to fix the functional lip body to the inner wall of the air intake.

2. The air intake lip component of the UAV according to claim 1, characterized in that, The portion of the functional lip body that contacts the inner wall of the air intake has a sealing component.

3. The air intake lip component of the UAV according to claim 2, characterized in that, The sealing component is an O-ring, and the O-ring is disposed in an Ω-shaped groove in the part of the functional lip body that is used to contact the inner wall of the air intake. The outer width of the Ω-shaped groove is smaller than the diameter of the O-ring.

4. The air intake lip component of the UAV according to claim 3, characterized in that, The inner surface of the locking groove is also provided with a bushing, and the angle α between the center line of the locking groove and the outer wall of the air intake is not greater than 90°.

5. The air intake lip component of the UAV according to claim 4, characterized in that, The positioning pin is Z-shaped and extends along the installation direction of the functional lip body.

6. The air intake lip component of the UAV according to claim 5, characterized in that, The positioning pin is fixed to the inner wall of the functional lip body by a countersunk high-locking bolt, and the end of the positioning pin is provided with a guide cone surface.

7. The air intake lip component of the UAV according to claim 6, characterized in that, The positioning sleeve is L-shaped, and the inner wall of the positioning sleeve is provided with a tapered guide groove extending along its circumference for engaging with the guide cone surface.

8. The air intake lip component of the UAV according to claim 7, characterized in that, The elastic lever is a spring lever, and the locking block protrudes outward. The outer side of the locking block is spherical, and the inner side is cylindrical. The angle between the locking block and the free end of the elastic lever is equal to the angle α between the center line of the locking groove and the outer wall of the air intake. The angle β between the movement direction of the locking block and the sliding direction of the positioning pin is 90°-arcsin((x*cosα) / t), where x is the compression of the sealing component and t is the thickness of the outer wall of the air intake.

9. The air intake lip component of the UAV according to claim 1, characterized in that, The functional lip body is a titanium alloy functional lip body made by 3D printing, and the functional lip body is surrounded by a partition frame.

10. A drone, characterized in that, Includes an intake duct functional lip member as described in any one of claims 1-9, wherein the intake duct functional lip member is connected to the outer wall of the intake duct by at least three of the outer connecting portions and to the inner wall of the intake duct by at least four of the inner connecting portions.

Images