Bionic flapping wing and aircraft

Abstract

The utility model relates to a bionic flapping wing and an aircraft, and the bionic flapping wing comprises an integrated flapping wing which is provided with a wing root area and a wing tail area; the supporting frame comprises a first connecting rod arranged in the wing root area and a second connecting rod arranged in the wing tail area, and the first connecting rod and the second connecting rod are rotatably connected and can rotate in the area between the unfolding state and the downward bending state; the elastic piece is connected with the first connecting rod and the second connecting rod, and the elastic piece can drive the first connecting rod and the second connecting rod to relatively rotate to an unfolded state in the process of recovering to a natural state when the integrated flapping wing is in a downward flapping process; when the integrated flapping wing is in the upward flapping process, the air pressure above the integrated flapping wing can overcome the elastic force of the elastic piece to drive the first connecting rod and the second connecting rod to relatively rotate to the downward bending state. The bionic flapping wing can be passively bent downwards under the action of upper air pressure in the upward flapping process, so that the windward area and energy consumption of the bionic flapping wing in the upward flapping process are reduced, and downward bending of the bionic flapping wing does not need to be controlled by a motor.

Description

Technical Field

[0001] The present application relates to the technical field of flight equipment, and in particular to a bionic flapping wing and an aircraft. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Flapping-wing aircraft, similar to a bird, generate lift and propulsion by flapping their wings up and down to create airflow. Due to their size, portability, flexibility, and ability to take off and land vertically, flapping-wing aircraft have significant and widespread applications in both civilian and defense sectors.

[0004] In the existing technology, the wings of flapping-wing aircraft are mostly straight wings, which cannot bend their wings during flapping like birds to improve lift and aerodynamic efficiency; and the few bendable wings are mostly active deformation structures. Therefore, additional control motors are needed for flapping-wing aircraft, which increases the weight of the aircraft and energy loss accordingly, and also reduces the endurance of the flapping-wing aircraft. Utility Model Content

[0005] The purpose of this application is to at least solve the technical problem that existing flapping-wing aircraft cannot reduce the upward wind resistance by effectively bending during the upward flapping process. This purpose is achieved through the following technical solutions:

[0006] The first aspect of the present application provides a bionic flapping wing, which includes: an integrated flapping wing, which is provided with a wing root area and a wing tail area; a support frame, which includes a first connecting rod provided in the wing root area and a second connecting rod provided in the wing tail area, the first connecting rod and the second connecting rod are rotatably connected, and can rotate in the area between the expanded state and the downward bent state; an elastic member, which connects the first connecting rod and the second connecting rod, and when the integrated flapping wing is in a downward flapping process, the elastic member can drive the first connecting rod and the second connecting rod to rotate relative to each other to the expanded state in the process of recovering to a natural state; when the integrated flapping wing is in an upward flapping process, the air pressure above the integrated flapping wing can overcome the elastic force of the elastic member to drive the first connecting rod and the second connecting rod to rotate relative to each other to the downward bent state.

[0007] Those skilled in the art will appreciate that the bionic flapping wings proposed in this application can be deployed during the downward flapping process under the action of elastic members, thereby providing lift for the flapping-wing aircraft. The bionic flapping wings can also bend downward passively under the action of air pressure during the upward flapping process, reducing the windward area of ​​the bionic flapping wings during the upward flapping process, reducing energy loss during flight, and increasing flapping lift. This also addresses the problems of conventional flapping-wing aircraft, such as the large number of wing control motors, heavy weight, low aerodynamic efficiency, and poor endurance.

[0008] In some embodiments, the docking end of the first connecting rod is provided with a first rotating portion and a first limiting surface from bottom to top, and the docking end of the second connecting rod is provided with a second rotating portion and a second limiting surface from bottom to top. The first connecting rod and the second connecting rod can be rotated downward to a downward bending state through the first rotating portion and the second rotating portion, and can be limited to an expanded state through the first limiting surface and the second limiting surface.

[0009] In some embodiments, the first limiting surface includes a first vertical surface, the first rotating part is configured as two side plates located at the bottom of the first vertical surface, the second limiting surface includes a second vertical surface, the second rotating part is configured as a sleeve located at the bottom of the second vertical surface, and the two side plates are distributed on both sides of the sleeve and are connected to the sleeve through a pin.

[0010] In some embodiments, the elastic member includes an elastic sheet or a rib, one end of the elastic member is connected to the butt end of the first connecting rod, and the other end of the elastic member is connected to the butt end of the second connecting rod.

[0011] In some embodiments, the two ends of the elastic member are respectively connected to the top of the first link and the second link, and the elastic member is set to a flat structure, or the two ends of the elastic member are respectively connected to the bottom of the first link and the second link, and the elastic member is set to an arch structure.

[0012] In some embodiments, the bionic flapping wing further includes a first support rod, and at least one first support rod is provided in the wing root area, one end of the first support rod is connected to the first connecting rod, and the other end of the first support rod extends to the edge of the wing root area.

[0013] In some embodiments, the bionic flapping wing also includes a second support rod, and a plurality of second support rods are provided in the wing tail area, wherein the plurality of first ends of the plurality of second support rods are connected to the second connecting rod, and the plurality of second ends of the plurality of second support rods extend dispersedly to the edge of the wing tail area.

[0014] In some embodiments, the end and side of the second connecting rod are provided with a docking portion, and the plurality of second supporting rods are respectively connected to the end and side of the second connecting rod.

[0015] In some embodiments, an arched connection portion or a pleated portion is provided at the connection between the wing root region and the wing tail region, and the arched connection portion or the pleated portion can be stretched when the integrated flapping wing is in a downward bending state.

[0016] A second aspect of the present application provides an aircraft, comprising: an aircraft body; and the bionic flapping wings according to the first aspect of the present application, wherein the bionic flapping wings are provided on both sides of the aircraft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0018] Figure 1 A bottom view of a bionic flapping wing according to an embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic structural diagram of the support frame of the bionic flapping wing shown;

[0020] Figure 3 for Figure 2 A bottom view of the partial structure A of the support frame shown;

[0021] Figure 4 for Figure 2 A side view of a partial structure of the support frame shown;

[0022] Figure 5 for Figure 2 A schematic structural diagram of the first connecting rod of the support frame shown;

[0023] Figure 6 for Figure 2 A schematic structural diagram of the second connecting rod of the support frame shown;

[0024] Figure 7 This is a structural schematic diagram of a bionic flapping wing in an expanded state according to an embodiment of the present application;

[0025] Figure 8 This is a structural schematic diagram of a bionic flapping wing in a downward bent state according to an embodiment of the present application.

[0026] The accompanying drawings are numerals as follows:

[0027] 100. Bionic flapping wings;

[0028] 10. Integrated flapping wing; 11. Wing root area; 12. Wing tail area;

[0029] 20. Support frame; 21. First connecting rod; 211. First rotating portion; 212. First limiting surface; 213. First fastening hole; 22. Second connecting rod; 221. Second rotating portion; 222. Second limiting surface; 223. Second fastening hole; 23. First support rod; 24. Second support rod;

[0030] 30. Elastic parts; 31. Fasteners;

[0031] 40. Pin. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the bionic flapping wing of the present application described in this application through connecting rods is only a preferred embodiment and is not a limitation on the scope of protection of the bionic flapping wing. For example, the bionic flapping wing of the present application can also be provided with four connecting rods or six connecting rods, and such adjustment does not deviate from the scope of protection of the bionic flapping wing of the present application.

[0033] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the singular forms "a," "an," and "the" may also be intended to include the plural forms. The terms "comprise," "include," and "have" are inclusive and, therefore, specify the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0034] Although the terms first, second, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply a sequence or order when used herein. In addition, in the description of this application, unless otherwise clearly specified and limited, the terms "set" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] For ease of description, spatial relative terms can be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "upper", "lower", "inner", "outer", "end", "side", etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation in addition to the orientation depicted in the figure. For example, if the mechanism in the figure flips, the element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The mechanism can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0036] Although flapping-wing aircraft in related technologies use passively deformed flapping wings to reduce the upward wind resistance of the flapping wings and reduce the number of motors, the passively deformed flapping wings generally have a split structure. The split-structure flapping wings will have air leakage at the docking gaps, which has a great impact on the downward lift of the flapping wings.

[0037] This application addresses the technical problem that existing passively deformable flapping wings have an impact on the downward lift of the flapping wings. It proposes to reduce the impact of the bionic flapping wing 100 on the downward lift of the flapping wing by reasonably setting the integrated flapping wing, support frame and elastic parts of the bionic flapping wing.

[0038] In addition, the "up" and "down" described in the embodiments of the present application are based on the normal flight posture of the aircraft, or the normal parking posture of the aircraft. The side of the bionic flapping wing facing the ground is "down", and the side of the bionic flapping wing facing away from the ground is "up".

[0039] like Figures 1 to 8 As shown, the first aspect of the present application provides a bionic flapping wing 100, which includes: an integrated flapping wing 10, which is provided with a wing root area 11 and a wing tail area 12; a support frame 20, which includes a first connecting rod 21 provided in the wing root area 11 and a second connecting rod 22 provided in the wing tail area 12, the first connecting rod 21 and the second connecting rod 22 being rotatably connected and capable of rotating in an area between an expanded state and a downwardly bent state; an elastic member 30, which connects the first connecting rod 21 and the second connecting rod 22, and the elastic member 30 can drive the first connecting rod 21 and the second connecting rod 22 to rotate relative to each other to the expanded state when the integrated flapping wing 10 is in a downward flapping process and the elastic member 30 is in a natural state; when the integrated flapping wing 10 is in an upward flapping process, the upper air pressure of the integrated flapping wing 10 can overcome the elastic force of the elastic member 30 to drive the first connecting rod 21 and the second connecting rod 22 to rotate relative to each other to the downwardly bent state.

[0040] In this embodiment, if Figure 7 As shown, the bionic flapping wing 100 proposed in this application can be in an unfolded state under the action of the elastic member 30 during the flapping process, thereby providing lift for the flapping wing aircraft. Figure 8 As shown, the bionic flapping wing 100 can also bend downward passively under the action of air pressure during the upward flapping process, thereby reducing the windward area of ​​the bionic flapping wing 100 during the upward flapping process, reducing energy loss during flight, increasing flapping lift, and solving the problems of traditional flapping wing aircraft such as multiple wing control motors, heavy weight, low aerodynamic efficiency, and poor endurance.

[0041] Specifically, the integrated flapping wing 10 includes a wing panel or a wing membrane, a wing root area 11 of the bionic flapping wing 100 is connected to the body, and a wing tail area 12 of the bionic flapping wing 100 is arranged away from the body to provide flight power for the bionic flapping wing 100.

[0042] During the acceleration process of the bionic flapping wing 100 in the front section of its upward flapping, the gas generates wind resistance on the bionic flapping wing 100. The wind resistance overcomes the elastic force of the elastic part 30, causing the first connecting rod 21 and the second connecting rod 22 to rotate in a downward bending state, so that the first limiting surface 212 and the second limiting surface 222 are separated. The first connecting rod 21 and the second connecting rod 22 drive the integrated flapping wing 10 in a downward bending state, thereby reducing the windward area of ​​the bionic flapping wing 100 during the upward flapping process.

[0043] During the deceleration process of the bionic flapping wing 100 in the latter part of its upward flapping, the wind resistance is less than the elastic force of the elastic member 30. The elastic force of the elastic member 30 restores the first link 21 and the second link 22 to the unfolded state. The first link 21 and the second link 22 drive the integrated flapping wing 10 to unfold. At this time, the first limiting surface 212 and the second limiting surface 222 re-contact to limit the first link 21, the second link 22 and the integrated flapping wing 10 from bending upward.

[0044] It should be noted that the embodiments of the present application do not limit the specific shape and material of the support frame 20 and the elastic member 30, because the improvement point of the present application is that the support frame 20 can be passively bent and unfolded under the action of wind resistance and the elastic member 30. As for the specific shape and material of the support frame 20 and the elastic member 30, there are multiple embodiments. For example, the support frame 20 can also be provided with multiple support rods, and the material of the elastic member 30 includes metal shrapnel or polymer material. These embodiments all fall within the protection scope of the support frame 20 and the elastic member 30 of the present application. As for other embodiments of the support frame 20 and the elastic member 30, they will not be elaborated one by one here.

[0045] The specific structure and material of the support frame 20 and the elastic member 30 according to the embodiment of the present application are described in detail below.

[0046] like Figures 3 to 6 As shown, in some embodiments, the docking end of the first link 21 is provided with a first rotating portion 211 and a first limiting surface 212 from bottom to top, and the docking end of the second link 22 is provided with a second rotating portion 221 and a second limiting surface 222 from bottom to top. The first link 21 and the second link 22 can be rotated downward to a downward bending state through the first rotating portion 211 and the second rotating portion 221, and can be limited to an unfolded state through the first limiting surface 212 and the second limiting surface 222.

[0047] In this embodiment, during the downward flapping process of the bionic flapping wing 100, the first limiting surface 212 of the first connecting rod 21 contacts the second limiting surface 222 of the second connecting rod 22, and the bionic flapping wing 100 is in an unfolded state. The limiting cooperation between the first limiting surface 212 and the second limiting surface 222 prevents the bionic flapping wing 100 from bending upward.

[0048] Specifically, the first rotating part 211 and the second rotating part 221 include a pin shaft 40 and a sleeve, and also include a spherical protrusion and a spherical groove wrapping the spherical protrusion. The first limiting surface 212 and the second limiting surface 222 include a vertical surface, and also include a trapezoidal surface and an inclined surface. These embodiments all fall within the scope of protection of this application.

[0049] like Figures 3 to 6 As shown, in some embodiments, the first limiting surface 212 includes a first vertical surface, the first rotating portion 211 is configured as two side plates located at the bottom of the first vertical surface, the second limiting surface 222 includes a second vertical surface, the second rotating portion 221 is configured as a shaft sleeve located at the bottom of the second vertical surface, and the two side plates are distributed on both sides of the shaft sleeve and are connected to the shaft sleeve through a pin 40.

[0050] In this embodiment, the pin shaft 40 passes through the shaft sleeve and the side plate, hinges the first bracket and the second bracket, and enables the first bracket and the second bracket to rotate around the pin shaft 40. During the relative rotation of the first bracket and the second bracket, the maximum rotation angle of the first bracket and the second bracket is limited by the contact between the first limiting surface 212 and the second limiting surface 222, thereby preventing the first bracket and the second bracket from bending upward.

[0051] Furthermore, setting the limiting surface as a vertical surface can provide a larger effective limiting area, thereby reducing the phenomenon of the two limiting surfaces being damaged by wind resistance.

[0052] like Figures 3 to 6 As shown, in some embodiments, the elastic member 30 includes an elastic sheet or a rib, one end of the elastic member 30 is connected to the butt end of the first connecting rod 21 , and the other end of the elastic member 30 is connected to the butt end of the second connecting rod 22 .

[0053] In this embodiment, one end of the elastic member 30 is fixedly connected to the first fastening hole 213 of the first connecting rod 21 by a fastener 31 such as a screw, and the other end of the elastic member 30 is fixedly connected to the second fastening hole 223 of the second connecting rod 22 by a fastener 31 such as a screw. The elastic member 30 can be arranged at the top of the first connecting rod 21 and the second connecting rod 22 to generate tension, or be arranged at the bottom of the first connecting rod 21 and the second connecting rod 22 to generate support force, and can also be arranged on the side walls of the first connecting rod 21 and the second connecting rod 22 to generate tension and support force.

[0054] like Figures 3 to 6 As shown, in some embodiments, the two ends of the elastic member 30 are respectively connected to the top of the first link 21 and the second link 22, and the elastic member 30 is set to a flat structure, or the two ends of the elastic member 30 are respectively connected to the bottom of the first link 21 and the second link 22, and the elastic member 30 is set to an arch structure.

[0055] In this embodiment, the tops of the first link 21 and the second link 22 are both configured as flat surfaces. Therefore, when both ends of the elastic member 30 are connected to the tops of the first link 21 and the second link 22, respectively, the elastic member 30 is configured as a flat plate structure, thereby increasing the contact area and the effective area between the elastic member 30 and the first link 21 and the second link 22, so that the elastic member 30 can effectively restore the first link 21 and the second link 22 to the expanded state.

[0056] The bottom of the first link 21 and the second link 22 are both provided with a rotating part. Therefore, when the two ends of the elastic member 30 are respectively connected to the bottom of the first link 21 and the second link 22, the elastic member 30 is set to an arch structure that avoids the rotating part, thereby improving the matching effect of the elastic member 30 with the first link 21 and the second link 22, and reducing the interference between the elastic member 30 and the rotating part.

[0057] like Figures 3 to 6 As shown, in some embodiments, the bionic flapping wing 100 also includes a first support rod 23, and the wing root area 11 is provided with at least one first support rod 23, one end of the first support rod 23 is connected to the first connecting rod 21, and the other end of the first support rod 23 extends to the edge of the wing root area 11.

[0058] In this embodiment, the first support rod 23 is connected to the first connecting rod 21. The first support rod 23 can provide overall support for the wing root area 11, thereby reducing local collapse or local tearing of the wing root area 11 during the flapping process of the bionic flapping wing 100.

[0059] Furthermore, since the area of ​​the wing root region 11 is relatively small, the embodiment of the present application uses a first support rod 23 in conjunction with the first connecting rod 21 to reduce the impact of the number and weight of the first support rods 23 on the wing root region 11 .

[0060] like Figures 3 to 6 As shown, in some embodiments, the bionic flapping wing 100 also includes a second support rod 24, and the wing tail area 12 is provided with multiple second support rods 24, multiple first ends of the multiple second support rods 24 are connected to the second connecting rod 22, and multiple second ends of the multiple second support rods 24 extend dispersedly to the edge of the wing tail area 12.

[0061] In this embodiment, multiple second support rods 24 are respectively connected to the second connecting rod 22, and the multiple second support rods 24 can extend and bend synchronously with the second connecting rod 22, so as to achieve the purpose of overall extending or bending the wing tail area 12, and reduce the phenomenon of local extension or inadequate bending of the wing tail area 12 during the extension and bending process.

[0062] Furthermore, the plurality of second support rods 24 can provide overall support to the wing-tail region 12 , thereby reducing the occurrence of local collapse or local tearing of the wing-tail region 12 during the flapping of the bionic flapping wing 100 .

[0063] like Figures 3 to 6 As shown, in some embodiments, the end and side of the second connecting rod 22 are provided with a docking portion, and the plurality of second support rods 24 are respectively connected to the end and side of the second connecting rod 22 .

[0064] In this embodiment, the docking portion is set as a slot, and the end of the second support rod 24 can be inserted into the slot, and then the second support rod 24 is fastened to the second connecting rod 22 by screws, so as to increase the effective area and connection firmness of the second support rod 24 and the second connecting rod 22, and reduce the shaking or falling off of the second support rod 24 and the second connecting rod 22 during the flapping process of the bionic flapping wing 100.

[0065] In some embodiments, an arched connection portion or a pleated portion is provided at the connection between the wing root area 11 and the wing tail area 12 , and the arched connection portion or the pleated portion can be stretched when the integrated flapping wing 10 is in a downward bending state.

[0066] In this embodiment, an arched connection portion or a pleated portion is provided at the connection between the wing root area 11 and the wing tail area 12. The arched connection portion or the pleated portion can provide a moving space for the downward bending action of the first link 21 and the second link 22, thereby improving the downward bending smoothness of the first link 21 and the second link 22, reducing the jamming phenomenon of the first link 21 and the second link 22 during the downward bending process, and reducing the tearing and damage of the integrated flapping wing 10 due to the first link 21 and the second link 22 during the downward bending process.

[0067] A second aspect of the present application provides an aircraft, comprising: an aircraft body; and the bionic flapping wings 100 according to the first aspect of the present application, with the bionic flapping wings 100 being provided on both sides of the aircraft body.

[0068] In this embodiment, the aircraft of the embodiment of the present application has all the technical effects of the bionic flapping wing 100, which will not be described in detail here.

[0069] In addition, the embodiments of the present application only focus on the structures of the bionic flapping wing 100 that are related to the improvement points of the present application, and do not mean that the bionic flapping wing 100 does not have other structures. For example, the bionic flapping wing 100 also includes a plug connector arranged on the first connecting rod 21. The bionic flapping wing 100 is connected to the body of the aircraft through the plug connector and can swing up and down under the drive of the driving device in the body. These structures all fall within the protection scope of the embodiments of the present application and will not be elaborated one by one here.

[0070] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A bionic flapping wing, characterized in that: The bionic flapping wing (100) comprises: An integrated flapping wing (10), wherein the integrated flapping wing (10) is provided with a wing root area (11) and a wing tail area (12); A support frame (20), the support frame (20) comprising a first connecting rod (21) provided in the wing root region (11) and a second connecting rod (22) provided in the wing tail region (12), the first connecting rod (21) and the second connecting rod (22) being rotatably connected and capable of rotating in a region between an expanded state and a downwardly bent state; an elastic member (30), the elastic member (30) connecting the first connecting rod (21) and the second connecting rod (22), the elastic member (30) being capable of driving the first connecting rod (21) and the second connecting rod (22) to rotate relative to each other to the deployed state when the integrated flapping wing (10) is in the process of flapping downward and returning to a natural state; When the integrated flapping wing (10) is in the process of flapping upward, the air pressure above the integrated flapping wing (10) can overcome the elastic force of the elastic member (30) to drive the first connecting rod (21) and the second connecting rod (22) to rotate relative to each other to the downward bending state.

2. The bionic flapping wing according to claim 1, characterized in that: The butt joint end of the first connecting rod (21) is provided with a first rotating portion (211) and a first limiting surface (212) from bottom to top, and the butt joint end of the second connecting rod (22) is provided with a second rotating portion (221) and a second limiting surface (222) from bottom to top. The first connecting rod (21) and the second connecting rod (22) can be rotated downward to the downward bending state through the first rotating portion (211) and the second rotating portion (221), and can be limited to the expanded state through the first limiting surface (212) and the second limiting surface (222).

3. The bionic flapping wing according to claim 2, characterized in that: The first limiting surface (212) includes a first vertical surface, the first rotating portion (211) is configured as two side plates located at the bottom of the first vertical surface, the second limiting surface (222) includes a second vertical surface, the second rotating portion (221) is configured as a shaft sleeve located at the bottom of the second vertical surface, and the two side plates are distributed on both sides of the shaft sleeve and are connected to the shaft sleeve via a pin (40).

4. The bionic flapping wing according to claim 1, characterized in that The elastic member (30) comprises an elastic sheet or a rib, one end of the elastic member (30) is connected to the butt end of the first connecting rod (21), and the other end of the elastic member (30) is connected to the butt end of the second connecting rod (22).

5. The bionic flapping wing according to claim 4, characterized in that: The two ends of the elastic member (30) are respectively connected to the top of the first connecting rod (21) and the second connecting rod (22), and the elastic member (30) is configured as a flat plate structure, or the two ends of the elastic member (30) are respectively connected to the bottom of the first connecting rod (21) and the second connecting rod (22), and the elastic member (30) is configured as an arch structure.

6. The bionic flapping wing according to claim 1, characterized in that: The bionic flapping wing (100) further includes a first support rod (23), and the wing root area (11) is provided with at least one first support rod (23), one end of the first support rod (23) is connected to the first connecting rod (21), and the other end of the first support rod (23) extends to the edge of the wing root area (11).

7. The bionic flapping wing according to claim 1, characterized in that: The bionic flapping wing (100) further includes a second support rod (24), the wing tail area (12) is provided with a plurality of the second support rods (24), a plurality of first ends of the plurality of the second support rods (24) are connected to the second connecting rod (22), and a plurality of second ends of the plurality of the second support rods (24) are dispersedly extended to the edge of the wing tail area (12).

8. The bionic flapping wing according to claim 7, characterized in that: The end and side of the second connecting rod (22) are provided with a docking portion, and a plurality of second support rods (24) are respectively connected to the end and side of the second connecting rod (22).

9. The bionic flapping wing according to claim 1, characterized in that: An arched connection portion or a pleated portion is provided at the connection between the wing root area (11) and the wing tail area (12), and the arched connection portion or the pleated portion can be stretched when the integrated flapping wing (10) is in the downward bending state.

10. An aircraft, characterized in that: The aircraft comprises: body; According to the bionic flapping wing (100) according to any one of claims 1 to 9, the bionic flapping wing (100) is provided on both sides of the body.

Images