A wing tip break variable span wing

Abstract

This application provides a wingtip-detachable variable-span wing, relating to the field of fixed-wing suicide drone target technology. It includes a mounting guide on one side of the fixed wing; a guide fixing assembly on the wingtip near the fixed wing, the guide fixing assembly cooperating with the mounting guide and the two being able to slide relative to each other; an elastic element with one end abutting against the mounting guide and the other end connected to the guide fixing assembly; and a limiting assembly on the fixed wing, having a first state and a second state that can be switched. When in the mounted state and the elastic element is in an energy-storing state, the limiting assembly is in the first state, limiting the relative position of the fixed wing and the wingtip; when in the disconnected state, the limiting assembly is in the second state, releasing the relative position limitation between the fixed wing and the wingtip, allowing the fixed wing and the wingtip to separate under the action of elastic restoring force. By replacing the wingtip with one of different spans, the wing can achieve different spans, adapting to various scenario requirements.

Description

Technical Field

[0001] This application relates to the field of fixed-wing suicide drone target drones, specifically to a wingtip-detached variable span wing. Background Technology

[0002] In unmanned aerial vehicle (UAV) target drones, the core value of variable span structure is to dynamically adjust the wing span so that the target drone exhibits differentiated aerodynamic characteristics at different stages of flight, thereby more realistically simulating the flight trajectories of various targets.

[0003] Existing variable span structures include two types: telescopic and folding. Telescopic structures rely on a nested sliding rod structure inside the wing to adjust the span, but parameters such as the internal storage space of the main wing and the guide length of the sliding rod are fixed during the design and manufacturing stage, resulting in a strictly limited maximum extension length that cannot be changed later. Folding structures achieve folding and unfolding through hinge connections between wing segments, but the installation position and rotation angle range of the hinges are also determined during the design and manufacturing stage, making the folding ratio fixed and unadjustable. The span variation range of both types of structures is fixed due to inherent parameter limitations during the design and manufacturing stage, making it difficult to meet the diverse simulation needs of complex scenarios.

[0004] Therefore, there is an urgent need for a wingtip-disconnected variable-span long wing to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the above problems by providing a wingtip disconnect variable span structure, thereby solving the problem that the span variation of traditional variable span structures is limited due to the limitation of connection methods.

[0006] This application provides a wingtip disconnected variable span structure, including: A fixed wing, wherein a mounting guide is provided on one side of the fixed wing; The wingtip has a guide and fixing component provided on the side of the fixed wing, the guide and fixing component being used to cooperate with the mounting guide and the two being able to slide relative to each other; An elastic element, one end of which abuts against the mounting guide portion, and the other end of which is connected to the guide fixing assembly; A limiting component is disposed on the fixed wing. The limiting component has a first state and a second state and can switch between the first state and the second state under the action of a driving force. When the guide fixing component slides relative to the mounting guide until they are in an installed state and the elastic element is compressed into an energy storage state, the limiting component is in the first state, and the limiting component limits the relative position of the fixed wing and the wingtip. When the guide fixing component slides relative to the mounting guide until they are in a disengaged state, the limiting component is in the second state, and the limiting component releases the relative position limitation of the fixed wing and the wingtip, so that the fixed wing and the wingtip separate from each other under the action of the elastic restoring force of the elastic element.

[0007] According to the technical solutions provided in certain embodiments of this application, the installation guide includes an installation portion disposed on the end face of the fixed wing near the wingtip and a guide groove formed on the end face. The installation portion has an installation groove with an opening direction facing the wingtip. Both the installation groove and the guide groove extend along a first direction. The installation portion is used to accommodate the guide fixing component.

[0008] According to the technical solutions provided in certain embodiments of this application, the guide fixing component includes: A boss is provided on the end face of the wingtip near the fixed wing, and the boss is slidably connected to the mounting groove; A guide member is disposed on the boss and slidably connected to a guide groove, so that when the boss slides inside the mounting groove, the guide member slides synchronously in the guide groove, and when the limiting component is in the first state, the limiting component and the guide member cooperate to limit the wingtip.

[0009] According to the technical solutions provided in certain embodiments of this application, a receiving groove extending in a first direction is provided in the boss of the wingtip, and the receiving groove is used to receive the elastic element.

[0010] According to the technical solutions provided in certain embodiments of this application, the mounting groove has a first limiting surface and a second limiting surface that are parallel to each other along a first direction, and a third limiting surface disposed in the mounting groove along the first direction. The first limiting surface and the second limiting surface are perpendicular to the third limiting surface. The first limiting surface and the second limiting surface are used to slide in contact with the boss, and the third limiting surface is used to abut against the elastic element.

[0011] According to the technical solutions provided in certain embodiments of this application, the boss has a first positioning surface and a second positioning surface that are parallel to each other along a first direction. The first positioning surface is used to slide in contact with the first limiting surface, and the second positioning surface is used to slide in contact with the second limiting surface, thereby guiding the sliding direction of the guide fixing assembly.

[0012] According to the technical solutions provided in certain embodiments of this application, one end of the elastic element is connected to the bottom surface of the receiving groove away from the fixed wing, and the other end extends to the outside of the receiving groove. When the guide fixing assembly and the mounting guide slide relative to each other until they are in the mounting state, the other end of the elastic element abuts against the third limiting surface of the mounting groove.

[0013] According to the technical solutions provided in certain embodiments of this application, the limiting component is provided with a U-shaped groove. When the limiting component is in the first state, the opening of the U-shaped groove faces the third limiting surface and is engaged with the guide member to limit the relative position of the wingtip and the fixed wing. When the limiting component is in the second state, the opening of the U-shaped groove faces away from the third limiting surface, so that the wingtip can slide out along the opening direction of the U-shaped groove under the elastic restoring force of the elastic element, thereby releasing the limiting effect on the wingtip.

[0014] According to certain embodiments of the present application, the technical solution further includes a driving component, which is disposed at one end of the fixed wing near the mounting guide portion, and the driving component includes: Servo motor, which provides rotational driving force; A servo disc, which is connected to the servo motor so that the servo motor drives the servo disc to rotate along the servo motor axis; A connecting post, one end of which is fixedly connected to the rudder disk and the other end of which is fixedly connected to the limiting component, is used to drive the limiting component to rotate when the rudder disk rotates along the servo motor axis, and to allow the limiting component to switch between a first state and a second state.

[0015] According to the technical solutions provided in certain embodiments of this application, the mounting groove further includes a fourth limiting surface, which is disposed on the side of the mounting groove away from the third limiting surface; the wingtip further includes a third positioning surface, which is disposed on the side of the wingtip away from the boss and away from the third limiting surface, and the third positioning surface is used to contact the fourth limiting surface when the guide fixing assembly and the mounting guide slide relative to each other to the installation state.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: The wingtip-disconnected variable-span long wing includes a fixed wing, a wingtip, an elastic element, and a limiting assembly. The mounting guide of the fixed wing and the guide fixing assembly of the wingtip form a relatively sliding mating structure. One end of the elastic element is connected to the guide fixing assembly, and the other end is used to abut against the mounting guide. During installation, the initial state of the limiting assembly is the same as the second state. The guide fixing assembly slides along the mounting guide, and the elastic element is gradually compressed during the sliding process. When the guide fixing assembly and the mounting guide slide relative to each other to a preset installation position, they are in the installation state. Under the action of the driving force, the limiting assembly switches to the first state, cooperating with the guide fixing assembly to restrict the relative position of the fixed wing and the wingtip. At this time, the elastic element is in an energy storage state due to compression. During disconnection, the limiting assembly switches to the second state under the action of the driving force, releasing the limiting effect on the wingtip. At this time, the elastic element returns to its initial state. It provides elastic restoring force to push the wingtip to slide in the opposite direction along the mounting guide, detaching it from the fixed wing. This structure completely overcomes the limitations of existing telescopic and folding variable span structures, which have limited span variations due to the fixed size of the connected wingtip. On the one hand, the fixed wing can accommodate wingtips of different spans, allowing the wing to achieve different spans and flexibly adapt to various scenario requirements. On the other hand, by disconnecting the wingtip, this structure makes the overall wing after the span change more lightweight than telescopic and folding variable span structures, reducing the overall weight of the wing after the span change and reducing energy consumption. At the same time, compared to the long stroke required for span changes in existing telescopic and folding variable span structures, this structure only uses driving force to switch the limiting component between two states to achieve the limiting and releasing of the wingtip, thus achieving span change. This provides a rapid response feature during the wingtip disconnection process, allowing the wing to complete the span adjustment in a short time and adapt to sudden changes in scenario requirements. Moreover, this structure is simple and low in cost.

[0017] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of a wingtip-disconnected variable-span long wing provided in this application embodiment; Figure 2 This is a schematic diagram of the overall structure of a fixed wing provided in an embodiment of this application; Figure 3 This is a schematic diagram of an integral wingtip structure provided in an embodiment of this application; Figure 4 This is a schematic diagram of a partial wingtip structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of a partial structure of a fixed wing provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a limiting component provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a driving component provided in an embodiment of this application; Figure 8 This is a schematic diagram of a guide component provided in an embodiment of this application.

[0020] The text labels in the image represent: 1. Fixed wing; 2. Wingtip; 3. Elastic element; 4. Limiting assembly; 5. Drive assembly; 11. Mounting guide; 22. Guide fixing assembly; 41. U-groove; 51. Servo; 52. Rudder disk; 53. Connecting column; 101. Wing skin; 102. Wing rib; 103. Forward carbon fiber tube; 104. Rear carbon fiber tube; 111. Mounting part; 112. Guide groove; 113. Mounting groove; 221. Boss; 222. Guide component; 1131. First limiting surface; 1132. Second limiting surface; 1133. Third limiting surface; 1134. Fourth limiting surface; 1121. Guide opening; 2211. Receiving groove; 2212. First positioning surface; 2213. Second positioning surface; 2214. Third positioning surface; 2221. Sliding connection part; 2222. Fixed mounting part. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0022] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0023] As mentioned in the background section, in view of the problems in the prior art, this embodiment provides a wingtip-disconnected variable-span long wing, including: Fixed wing 1, with an installation guide 11 provided on one side of the fixed wing 1; Wingtip 2, a guide fixing component 22 is provided on the side of the wingtip 2 near the fixed wing 1, the guide fixing component 22 is used to cooperate with the mounting guide part 11 and the two can slide relative to each other; Elastic element 3, one end of which abuts against the mounting guide part 11, and the other end of which is connected to the guide fixing assembly 22; A limiting component 4 is disposed on the fixed wing 1. The limiting component 4 has a first state and a second state and can switch between the first state and the second state under the action of driving force. When the guide fixing component 22 and the mounting guide part 11 slide relative to each other to the mounting state and the elastic element 3 is compressed to the energy storage state, the limiting component 4 is in the first state, and the limiting component 4 limits the relative position of the fixed wing 1 and the wingtip 2. When the guide fixing component 22 and the mounting guide part 11 slide relative to each other to the disengaged state, the limiting component 4 is in the second state, and the limiting component 4 releases the relative position of the fixed wing 1 and the wingtip 2, so that the fixed wing 1 and the wingtip 2 separate from each other under the action of the elastic restoring force of the elastic element 3.

[0024] Please refer to Figures 1 to 3The fixed wing 1 has a curved streamline shape, with a mounting guide 11 on one side to accommodate the guide fixing assembly 22 mounted on the wingtip 2 and provide it with sliding guide space. The wingtip 2 has a curved streamline shape, which matches the curved streamline shape of the fixed wing 1, ensuring the consistency of the overall aerodynamic performance when the fixed wing 1 and the wingtip 2 are installed to form a wing. The guide fixing assembly 22 is located near the side of the fixed wing 1 and can slide within the accommodating space of the mounting guide 11. One end of the elastic element 3 is connected to the guide fixing assembly 22, and the other end is used to abut against the mounting guide 11. During installation, the initial state of the limiting assembly 4 is the same as the second state. The elastic element 3 is gradually compressed during the sliding process as the guide fixing component 22 slides along the mounting guide 11. When the guide fixing component 22 slides relative to the mounting guide 11 to the preset installation position, it is in the installation state. The limiting component 4 switches to the first state under the action of the driving force and cooperates with the guide fixing component 22 to limit the relative position of the fixed wing 1 and the wingtip 2. At this time, the elastic element 3 is in the energy storage state. When disconnected, the limiting component 4 switches to the second state under the action of the driving force to release the limiting effect on the wingtip 2. At this time, the elastic element 3 returns to the initial state. Under the action of the elastic restoring force of the elastic element 3, the wingtip 2 is pushed to slide in the opposite direction along the mounting guide 11 and disengage from the fixed wing 1.

[0025] The mounting guide 11 of the fixed wing 1 and the guide fixing assembly 22 of the wingtip 2 form a relatively sliding mating structure. One end of the elastic element 3 is connected to the guide fixing assembly 22, and the other end is used to abut against the mounting guide 11. During installation, the initial state of the limiting assembly 4 is the same as the second state. When the guide fixing assembly 22 slides along the mounting guide 11 to the preset installation position, it is in the installation state. Under the action of the driving force, the limiting assembly 4 switches to the first state, cooperating with the guide fixing assembly 22 to restrict the relative position of the fixed wing 1 and the wingtip 2. At this time, the elastic element 3 is in an energy storage state due to compression. When disconnected, the limiting assembly 4 switches to the second state under the action of the driving force, releasing the limiting effect on the wingtip 2. At this time, the elastic element 3 returns to the initial state and provides elastic restoring force to push the wingtip 2 to slide in the opposite direction along the mounting guide 11 and detach from the fixed wing 1. This structure completely overcomes the limitations of existing telescopic and folding variable span structures, which are restricted by the fixed size of the connected wingtips. On the one hand, the fixed wing 1 can accommodate wingtips of different spans, allowing the wing to achieve different spans and flexibly adapt to various scenario requirements. On the other hand, by disconnecting the wingtips 2, the structure makes the overall wing after the span change more lightweight than telescopic and folding variable span structures, reducing the overall weight of the wing after the span change and reducing energy consumption. At the same time, compared with the long stroke required for span change in existing telescopic and folding variable span structures, this structure only needs to use driving force to switch the limiting component 4 between two states to limit and release the wingtips 2, thus achieving span change. This provides a rapid response feature during the disconnection of the wingtips 2, allowing the wing to complete the span adjustment in a short time and adapt to sudden changes in scenario requirements. Moreover, this structure is simple and low in cost.

[0026] In a preferred embodiment, the mounting guide 11 includes a mounting portion 111 disposed on the end face of the fixed wing 1 near the wingtip 2 and a guide groove 112 formed on the end face. The mounting portion 111 has a mounting groove 113 with its opening direction facing the wingtip 2. Both the mounting groove 113 and the guide groove 112 extend along a first direction. The mounting portion 111 is used to accommodate the guide fixing assembly 22.

[0027] like Figure 2As shown, the mounting part 111 is disposed on the side of the fixed wing 1 near the wingtip 2. The mounting part 111 is provided with a mounting groove 113 with an opening facing the wingtip 2. The mounting groove 113 is U-shaped and extends along a first direction, which is the forward direction along the fixed wing 1. The guide groove 112 is disposed at the end of the fixed wing 1 near the wingtip 2. The guide groove 112 extends along the first direction and is a rectangular strip. The mounting groove 113 and the guide groove 112 provide a receiving space for the guide fixing assembly 22, so that during installation, the guide fixing assembly 22 can slide along the mounting groove 113 and the guide groove 112 of the mounting guide part 11, so that the wingtip 2 can be mounted on the fixed wing 1. When disconnected, the guide fixing assembly 22 can detach from the fixed wing 1 along the mounting guide part 11.

[0028] In a preferred embodiment, the guide fixing component 22 includes: A boss 221 is provided on the end face of the wingtip 2 near the fixed wing 1, and the boss 221 is slidably connected to the mounting groove 113; Guide member 222 is disposed on the boss 221 and is slidably connected to guide groove 112 so that when the boss 221 slides inside the mounting groove 113, the guide member 222 slides synchronously in the guide groove 112. When the limiting component 4 is in the first state, the limiting component 4 and the guide member 222 cooperate to limit the wingtip 2.

[0029] like Figure 3 As shown, the boss 221 has a rectangular cross-section, is used to match the mounting groove 113, and can slide within the mounting groove 113; as Figure 8 As shown, the guide member 222 includes a sliding connection portion 2221 and a fixed mounting portion 2222. The fixed mounting portion 2222 is connected to the boss 221. The cross-sectional width of the sliding connection portion 2221 is larger than that of the fixed mounting portion 2222. Figure 2As shown, the guide groove 112 extends along the first direction and extends beyond the mounting groove 113 near the edge of the guide member 222. The guide groove 112 and the mounting groove 113 have a partially overlapping area along the axial projection of the fixed wing 1. A guide opening 1121 is provided on the side of the guide groove 112 away from the mounting groove 113 along the first direction. The guide opening 1121 is used to allow the sliding connection part 2221 to pass through, preventing the guide member 222 from falling off when sliding in the guide groove 112, so that the wingtip 2 can be stably installed on the fixed wing 1. When the guide member 222 slides in the mounting groove 113, the boss 221 slides synchronously in the guide groove 112. When the boss 221 and the mounting groove 113 slide relative to each other until they are in the installation state and the guide member 222 slides synchronously in the guide groove 112 until they are in the installation state, the limiting component 4 switches to the first state under the action of the driving force, so that the limiting component 4 and the guide member 222 are engaged, and the wingtip 2 is limited.

[0030] In a preferred embodiment, the protrusion 221 of the wingtip 2 is provided with a receiving groove 2211 extending in a first direction, the receiving groove 2211 being used to receive the elastic element 3.

[0031] like Figure 4 As shown, the receiving groove 2211 has a circular cross-section and extends along the first direction to provide receiving space for the elastic element 3.

[0032] In a preferred embodiment, the mounting groove 113 has a first limiting surface 1131 and a second limiting surface 1132 that are parallel to each other along a first direction, and a third limiting surface 1133 disposed in the mounting groove 113 along the first direction. The first limiting surface 1131 and the second limiting surface 1132 are perpendicular to the third limiting surface 1133. The first limiting surface 1131 and the second limiting surface 1132 are used to slide in contact with the boss 221, and the third limiting surface 1133 is used to abut against the elastic element 3.

[0033] like Figure 5As shown, the first limiting surface 1131 and the second limiting surface 1132 are two parallel rectangular surfaces arranged along the first direction within the mounting groove 113, used to contact the boss 221 to form a guiding fit. The third limiting surface 1133 is a rectangular surface arranged perpendicular to the first direction within the mounting groove 113, and the third limiting surface 1133 is perpendicular to the first limiting surface 1131 and the second limiting surface 1132. During installation, when the elastic element 3 slides with the boss 221 in the mounting groove 113 until it contacts the third limiting surface 1133, the third limiting surface 1133 abuts against the elastic element 3 and gradually compresses the elastic element 3 so that the elastic element 3 is in an energy storage state due to compression. The mounting groove 113 is used to guide the sliding direction of the boss 221.

[0034] In a preferred embodiment, the boss 221 has a first positioning surface 2212 and a second positioning surface 2213 that are parallel to each other along a first direction. The first positioning surface 2212 is used to slide in contact with the first limiting surface 1131, and the second positioning surface 2213 is used to slide in contact with the second limiting surface 1132.

[0035] like Figure 4 As shown, the first positioning surface 2212 and the second positioning surface 2213 are two parallel rectangular surfaces of the boss 221 arranged along the first direction. The first positioning surface 2212 is used to slide in contact with the first limiting surface 1131, and the second positioning surface 2213 is used to slide in contact with the second limiting surface 1132, so that the boss 221 cooperates with the mounting groove 113, and the boss 221 can slide in the mounting groove 113.

[0036] In a preferred embodiment, one end of the elastic element 3 is connected to the bottom surface of the receiving groove 2211 away from the fixed wing 1, and the other end extends to the outside of the receiving groove 2211. When the guide fixing assembly 22 and the mounting guide 11 slide relative to each other to the mounting state, the other end of the elastic element 3 abuts against the third limiting surface 1133 of the mounting groove 113.

[0037] like Figure 3 As shown, one end of the elastic element 3 is connected to the bottom surface of the receiving groove 2211 away from the fixed wing 1, so that the elastic element 3 is fixed in the receiving groove 2211, and the other end extends to the outside of the receiving groove 2211. During the installation process, when the elastic element 3 slides with the boss 221 in the mounting groove 113 and contacts the third limiting surface 1133, the elastic element 3 is compressed so that the compressed elastic element 3 is in an energy storage state to provide elastic restoring force. It can be understood that the elastic element 3 is a spring, and the elastic element 3 can also be set as other elastic elements with elasticity. The specific settings and adjustments can be made according to the actual situation, and no specific limitation is made here.

[0038] In a preferred embodiment, the limiting component 4 is provided with a U-shaped groove 41. When the limiting component 4 is in the first state, the opening of the U-shaped groove 41 faces the third limiting surface 1133 and engages with the guide member 222 to limit the relative position of the wingtip 2 and the fixed wing 1. When the limiting component 4 is in the second state, the opening of the U-shaped groove 41 faces away from the third limiting surface 1133, so that the wingtip 2 can slide out along the opening direction of the U-shaped groove 41 under the elastic restoring force of the elastic element 3, thereby releasing the limiting effect on the wingtip 2.

[0039] like Figure 6 As shown, a U-shaped groove 41 is provided at the center of one axial side of the limiting component 4. The U-shaped groove 41 cooperates with the guide member 222 through its opening. During installation, the initial state of the limiting component 4 is the same as the second state. When the guide fixing component 22 and the installation guide part 11 slide relative to each other to the preset installation position, they are in the installation state. Under the action of the driving force, the limiting component 4 switches to the first state. At this time, the opening of the U-shaped groove 41 faces the third limiting surface 1133 and cooperates with the guide member 222 to lock the guide member 222, thereby limiting the guide fixing component 22 so that the wingtip 2 can be fixedly installed on the fixed wing 1. When disconnected, when the limiting component 4 switches to the second state under the action of the driving force, the opening of the U-shaped groove 41 faces away from the third limiting surface 1133, so that the guide member 222 is disengaged from the limiting component 4, releasing the limiting effect on the guide fixing component 22, so that the wingtip 2 is disengaged from the fixed wing 1 along the opening direction of the U-shaped groove 41 under the action of the elastic restoring force of the elastic element 3.

[0040] In a preferred embodiment, a drive assembly 5 is further included, which is disposed at one end of the fixed wing 1 near the mounting guide portion 11. The drive assembly 5 includes: Servo motor 51, the servo motor 51 being used to provide rotational driving force; A servo disc 52 is connected to a servo motor 51 so that the servo motor 51 drives the servo disc 52 to rotate along the axial direction of the servo motor 51. A connecting post 53 is fixedly connected at one end to the rudder disk 52 and at the other end to the limiting component 4. It is used to drive the limiting component 4 to rotate when the rudder disk 52 rotates along the axial direction of the servo motor 51, so that the limiting component 4 can switch between a first state and a second state.

[0041] like Figure 7As shown, the servo motor 51 is mounted on the fixed wing 1 to provide driving force; the servo disk 52 is a cylindrical body with an axial mounting hole for connecting to the output shaft of the servo motor 51. Three mounting holes are evenly arranged around the cylinder for connecting to the connecting post 53; the connecting post 53 is a cylindrical body with three of them. One end of the cylinder is connected to the servo disk 52, and the other end is connected to the limiting component 4. Under the driving force of the servo motor 51, the servo disk 52 drives the connecting post 53 to rotate, so that the connecting post 53 drives the limiting component 4 to rotate, so that the limiting component 4 switches between a first state and a second state. The first state is when the opening of the U-shaped groove 41 of the limiting component 4 faces the third limiting surface 1133, and the second state is when the opening of the U-shaped groove 41 faces the third positioning surface 2214.

[0042] In a preferred embodiment, the mounting groove 113 further includes a fourth limiting surface 1134, which is disposed on the side of the mounting groove 113 away from the third limiting surface 1133; the wingtip 2 further includes a third positioning surface 2214, which is disposed on the side of the wingtip 2 away from the boss 221 away from the third limiting surface 1133, and the third positioning surface 2214 is used to contact the fourth limiting surface 1134 when the guide fixing assembly 22 and the mounting guide 11 slide relative to each other to the mounting state.

[0043] like Figure 4 and Figure 5 As shown, the fourth limiting surface 1134 consists of two rectangular surfaces on the mounting groove 113, with the rectangular surfaces located on the side of the mounting groove 113 closer to the guide opening 1121. The third positioning surface 2214 is a rectangular surface located on the side of the wingtip 2 opposite to the protrusion 221, away from the third limiting surface 1133. In the installed state, the protrusion 221 slides within the mounting groove 113 until the fourth limiting surface 1134 contacts the third positioning surface 2214, at which point the fixed wing 1 and the edge of the wingtip 2 are aligned, forming a complete wing and ensuring the integrity of the aerodynamic shape. It can be understood that, as Figure 1 As shown, the wing surface formed by the fixed wing 1 and the wingtip 2 has a wing skin 101. Inside the wing, there are four wing ribs 102, a front carbon tube 103 and a rear carbon tube 104. The wing skin 101 and the wing ribs 102 bear shear force. The front carbon tube 103 and the rear carbon tube 104 are connected to the wing ribs 102 to bear vertical loads and prevent wing torsion. The overall structure ensures the strength and rigidity of the wing.

[0044] The wingtip-disconnect variable-span wing provided in this application forms a relatively slidable mating structure through the mounting guide 11 of the fixed wing 1 and the guide fixing assembly 22 of the wingtip 2. One end of the elastic element 3 is connected to the guide fixing assembly 22, and the other end is used to abut against the mounting guide 11. During installation, the initial state of the limiting assembly 4 is the same as the second state. The guide fixing assembly 22 slides along the mounting guide 11, and the elastic element 3 is gradually compressed during the sliding process. When the guide fixing assembly 22 and the mounting guide 11 slide relative to each other to a preset installation position, they are in the installation state. Under the action of the driving force, the limiting assembly 4 switches to the first state, cooperating with the guide fixing assembly 22 to restrict the relative position of the fixed wing 1 and the wingtip 2. At this time, the elastic element 3 is in an energy storage state due to compression. During disconnection, the limiting assembly 4 switches to the second state under the action of the driving force, releasing the limiting effect on the wingtip 2. At this time, the elastic element 3 returns to its initial state and provides elastic restoring force to push the wingtip 2 to slide in the opposite direction along the mounting guide 11. By detaching from the fixed wing 1 and cooperating with the multi-directional constraints of the mounting slot 113's multiple limiting surfaces and the boss 22's positioning surfaces, a stable connection and rapid assembly / disassembly of the wingtip 2 are achieved. This structure completely overcomes the limitations of existing telescopic and folding variable-span structures, which suffer from limited span variation due to the fixed size and model of the connected wingtip. On the one hand, the fixed wing 1 can accommodate wingtips of different spans, allowing the wing to achieve different spans and flexibly adapt to various scenario requirements. On the other hand, by disconnecting the wingtip 2, this structure makes the overall wing with a changed span significantly better than telescopic and folding variable-span structures. The variable span structure has a greater advantage in terms of lightweighting, which can reduce the overall weight of the wing after the span change and reduce energy consumption. At the same time, compared with the long stroke required for the span change of the telescopic and folding variable span structures in the prior art, this structure can achieve the span change by simply using the driving force to switch the limiting component 4 between two states to limit and release the wingtip 2. This gives it a rapid response feature during the disconnection of the wingtip 2, allowing the wing to complete the span adjustment in a short time and adapt to the changing needs of sudden scenarios. Moreover, this structure is simple and low in cost.

[0045] To facilitate understanding by those skilled in the art, the working principle of the wingtip-disconnected variable-span wing provided in this application is further as follows: In the installation state, the initial state of the limiting component 4 is the same as the second state. The wingtip 2 cooperates with the mounting guide part 11 of the fixed wing 1 through the guide fixing component 22, so that when the boss 221 slides in the mounting groove 113, the guide 222 slides synchronously in the guide groove 112. The two slide along the first direction. During the installation process, when the elastic element 3 slides with the boss 221 in the mounting groove 113 to the third limiting surface 1133, the third limiting surface 1133 abuts against the elastic element 3. Then, the elastic element 3 is compressed so that the elastic element 3 in the compressed state is in an energy storage state. At the same time, when the guide fixing component 22 slides relative to the mounting guide part 11 until the fourth limiting surface 1134 contacts the third positioning surface 2214, the limiting component 4 switches to the first state under the action of the drive component 5. Its U-shaped groove 41 opens towards the third limiting surface 1133 and engages with the guide 222, limiting the relative position of the wingtip 2 and the fixed wing 1, ensuring that the two are stably connected and maintaining aerodynamic integrity.

[0046] When disconnected, the servo 51 of the drive assembly 5 drives the servo disk 52 to rotate, which in turn drives the limiting assembly 4 to switch to the second state via the connecting column 53. At this time, the opening of the U-shaped groove 41 faces the third positioning surface 2214, which is used to release the locking limit on the guide member 222. At this time, under the action of elastic restoring force, the elastic element 3 pushes the guide fixing assembly 22 of the wingtip 2 to slide along the opening direction of the U-shaped groove 41, so that the guide fixing assembly 22 disengages from the mounting guide part 11, and finally completes the disengagement of the wingtip 2 from the fixed wing 1. By mounting wingtips 2 with different spans on the fixed wing 1, the rapid replacement of wingtips with different spans can be achieved, thereby flexibly adjusting the overall span to meet the span requirements of different flight scenarios.

[0047] The wingtip-disconnect variable-span wing provided in this application forms a relatively slidable mating structure through the mounting guide 11 of the fixed wing 1 and the guide fixing assembly 22 of the wingtip 2. One end of the elastic element 3 is connected to the guide fixing assembly 22, and the other end is used to abut against the mounting guide 11. During installation, the initial state of the limiting assembly 4 is the same as the second state. The guide fixing assembly 22 slides along the mounting guide 11, and the elastic element 3 is gradually compressed during the sliding process. When the guide fixing assembly 22 and the mounting guide 11 slide relative to each other to a preset installation position, they are in the installation state. Under the action of the driving force, the limiting assembly 4 switches to the first state, cooperating with the guide fixing assembly 22 to restrict the relative position of the fixed wing 1 and the wingtip 2. At this time, the elastic element 3 is in an energy storage state due to compression. During disconnection, the limiting assembly 4 switches to the second state under the action of the driving force, releasing the limiting effect on the wingtip 2. At this time, the elastic element 3 returns to its initial state and provides elastic restoring force to push the wingtip 2 to slide in the opposite direction along the mounting guide 11. By detaching from the fixed wing 1 and cooperating with the multi-directional constraints of the mounting slot 113's multiple limiting surfaces and the boss 222's positioning surfaces, a stable connection and rapid assembly / disassembly of the wingtip 2 are achieved. This structure completely overcomes the limitations of existing telescopic and folding variable-span structures, which suffer from limited span variation due to the fixed size and model of the connected wingtip. On the one hand, the fixed wing 1 can accommodate wingtips of different spans, allowing the wing to achieve different spans and flexibly adapt to various scenario requirements. On the other hand, by disconnecting the wingtip 2, this structure makes the overall wing with a changed span significantly better than telescopic and folding variable-span structures. The variable span structure has a greater advantage in terms of lightweighting, which can reduce the overall weight of the wing after the span change and reduce energy consumption. At the same time, compared with the long stroke required for the span change of the telescopic and folding variable span structures in the prior art, this structure can achieve the span change by simply using the driving force to switch the limiting component 4 between two states to limit and release the wingtip 2. This gives it a rapid response feature during the disconnection of the wingtip 2, allowing the wing to complete the span adjustment in a short time and adapt to the changing needs of sudden scenarios. Moreover, this structure is simple and low in cost.

[0048] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A wingtip-disconnected variable-span long wing, characterized in that, include: Fixed wing (1), with an installation guide (11) provided on one side of the fixed wing (1); The wingtip (2) is provided with a guide fixing component (22) on the side of the fixed wing (1). The guide fixing component (22) is used to cooperate with the mounting guide (11) and the two can slide relative to each other. An elastic element (3) has one end abutting against the mounting guide (11) and the other end connected to the guide fixing assembly (22); A limiting component (4) is disposed on the fixed wing (1). The limiting component (4) has a first state and a second state and can switch between the first state and the second state under the action of driving force. When the guide fixing component (22) and the mounting guide (11) slide relative to each other to the mounting state and the elastic element (3) is compressed to the energy storage state, the limiting component (4) is in the first state and the limiting component (4) limits the relative position of the fixed wing (1) and the wingtip (2). When the guide fixing component (22) and the mounting guide (11) slide relative to each other to the disengaged state, the limiting component (4) is in the second state and the limiting component (4) releases the limitation on the relative position of the fixed wing (1) and the wingtip (2) so that the fixed wing (1) and the wingtip (2) separate from each other under the action of the elastic restoring force of the elastic element (3).

2. The wingtip-disconnected variable-span wing according to claim 1, characterized in that, The mounting guide (11) includes a mounting part (111) disposed on one end face of the fixed wing (1) near the wingtip (2) and a guide groove (112) formed on the end face. The mounting part (111) has a mounting groove (113) with its opening direction facing the wingtip (2). Both the mounting groove (113) and the guide groove (112) extend along a first direction. The mounting part (111) is used to accommodate the guide fixing assembly (22).

3. The wingtip-disconnected variable-span wing according to claim 2, characterized in that, The guide fixing assembly (22) includes: A boss (221) is provided on the end face of the wingtip (2) near the fixed wing (1), and the boss (221) is slidably connected to the mounting groove (113); The guide (222) is disposed on the boss (221) and is slidably connected to the guide groove (112) so that when the boss (221) slides inside the mounting groove (113), the guide (222) slides synchronously in the guide groove (112), and when the limiting component (4) is in the first state, the limiting component (4) and the guide (222) cooperate to limit the wingtip (2).

4. The wingtip-disconnected variable-span wing according to claim 3, characterized in that, The wingtip (2) has a receiving groove (2211) extending in a first direction in the boss (221), the receiving groove (2211) being used to receive the elastic element (3).

5. The wingtip-disconnected variable-span wing according to claim 4, characterized in that, The mounting groove (113) has a first limiting surface (1131) and a second limiting surface (1132) that are parallel to each other along a first direction, and a third limiting surface (1133) disposed on the mounting groove (113) along the first direction. The first limiting surface (1131) and the second limiting surface (1132) are perpendicular to the third limiting surface (1133). The first limiting surface (1131) and the second limiting surface (1132) are used to slide in contact with the boss (221), and the third limiting surface (1133) is used to abut against the elastic element (3).

6. The wingtip-disconnected variable-span wing according to claim 5, characterized in that, The boss (221) has a first positioning surface (2212) and a second positioning surface (2213) that are parallel to each other along a first direction. The first positioning surface (2212) is used to slide in contact with the first limiting surface (1131), and the second positioning surface (2213) is used to slide in contact with the second limiting surface (1132) to guide the sliding direction of the guide fixing component (22).

7. The wingtip-disconnected variable-span wing according to claim 5, characterized in that, One end of the elastic element (3) is connected to the bottom surface of the receiving groove (2211) away from the fixed wing (1), and the other end extends to the outside of the receiving groove (2211). When the guide fixing assembly (22) and the installation guide (11) slide relative to each other to the installation state, the other end of the elastic element (3) abuts against the third limiting surface (1133) of the installation groove (113).

8. The wingtip-disconnected variable-span wing according to claim 5, characterized in that, The limiting component (4) is provided with a U-shaped groove (41). When the limiting component (4) is in the first state, the opening of the U-shaped groove (41) faces the third limiting surface (1133) and is engaged with the guide (222) to limit the relative position of the wingtip (2) and the fixed wing (1). When the limiting component (4) is in the second state, the opening of the U-shaped groove (41) faces away from the third limiting surface (1133) so that the wingtip (2) can slide out along the opening direction of the U-shaped groove (41) under the elastic restoring force of the elastic element (3) and release the limiting effect on the wingtip (2).

9. The wingtip-disconnected variable-span wing according to claim 8, characterized in that, It also includes a drive assembly (5), which is disposed at one end of the fixed wing (1) near the mounting guide (11), and the drive assembly (5) includes: Servo motor (51), said servo motor (51) is used to provide rotational driving force; A rudder disc (52) is connected to the servo motor (51) so that the servo motor (51) drives the rudder disc (52) to rotate along the servo motor (51) axis; A connecting post (53) is fixedly connected at one end to the rudder disk (52) and at the other end to the limiting component (4). It is used to drive the limiting component (4) to rotate when the rudder disk (52) rotates along the axial direction of the servo motor (51), and to switch the limiting component (4) between the first state and the second state.

10. The wingtip-disconnected variable-span wing according to claim 5, characterized in that, The mounting groove (113) further includes a fourth limiting surface (1134), which is disposed on the side of the mounting groove (113) away from the third limiting surface (1133); the wingtip (2) further includes a third positioning surface (2214), which is disposed on the side of the wingtip (2) away from the third limiting surface (1133) relative to the boss (221), and the third positioning surface (2214) is used to contact the fourth limiting surface (1134) when the guide fixing assembly (22) and the mounting guide (11) slide relative to each other to be in the installation state.

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