A variable wing with an elastic support self-locking function and a flush wing surface

Abstract

The present invention relates to a variable wing with an elastic support self-locking function and a flush wing surface; it includes a main wing and a protruding wing. An extending mechanism is provided in the inner cavity of the main wing, and a fixing frame is provided in the inner cavity of the protruding wing. An elastic support mechanism is installed on the fixing frame, and a first locking mechanism and a second locking mechanism are installed on the fixing frame. One end of the first locking mechanism is connected to a pulling rope; one end of the main wing is provided with a main wing inner lining plate, and one end of the protruding wing is provided with a protruding wing inner lining plate. One end of the protruding wing inner lining plate abuts. The protruding wing inner lining plate includes a lining section and an outer edge section. A step is provided at the connection between the outer edge section and the lining section. The thickness of the main wing inner lining plate is equal to the height of the step, and the thickness of the main wing is equal to the thickness of the protruding wing; through the structural design of the variable wing with an elastic support self-locking function and a flush wing surface, it is to solve the technical problems existing in the prior art that after the protruding wing is fully extended, there will be a step between the protruding wing and the main wing, and the existence of the step will have an adverse impact on the aerodynamics of the aircraft, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft components, and particularly to a variable wing with an elastic support self-locking function and a flush wing surface. Background Art

[0002] The wing is a main component of an aircraft during flight. Changing the wing shape (such as wing sweep, changing the wingspan and camber, etc.) during flight can effectively increase the efficiency of the wing. Among them, the effects of changing the wingspan and wing area are the most prominent. For example, an aircraft usually requires a wing with a high aspect ratio and a large wing area during cruising to provide more lift for the aircraft.

[0003] Currently, the common method to increase the aspect ratio is to increase the wingspan length. The common method to increase the wingspan length is to add an extended wing to the main wing part, and the extended wing can be pushed out. However, after the extended wing is pushed out in the prior art, there will be a step between the extended wing and the main wing. The existence of the step will have an adverse effect on the aerodynamics of the aircraft. Secondly, the variable wing needs a stable locking structure after deformation. The current locking structure is designed separately, which increases the complexity of the overall design. Moreover, the flexible wing surface of the variable wing does not have enough support structure, and the flexible wing edge will deform during use, which is not conducive to flight.

[0004] Therefore, in view of the above problems, the present invention urgently provides a variable wing with an elastic support self-locking function and a flush wing surface. Summary of the Invention

[0005] The purpose of the present invention is to provide a variable wing with an elastic support self-locking function and a flush wing surface, and to solve the technical problems in the prior art that after the extended wing is pushed out, there will be a step between the extended wing and the main wing, the existence of the step will have an adverse effect on the aerodynamics of the aircraft, and at the same time, the existing locking structure is complex and the wing edge of the extended wing deforms, etc. through the structural design of the variable wing with an elastic support self-locking function and a flush wing surface.

[0006] A deformable wing with an elastic support self-locking function and a flush wing surface provided by the present invention includes a main wing and a protruding wing. The protruding wing is inserted into the main wing. An extension mechanism is fixed in the inner cavity of the main wing. A fixing frame is arranged in the inner cavity of the protruding wing. Elastic support mechanisms for supporting the upper and lower end faces of the protruding wing are installed at intervals along the length on the fixing frame. The elastic support mechanisms are detachably connected to the protruding wing, and the fixing frame is detachably connected to the extension mechanism. One end of the fixing frame extends to the outside of the protruding wing. A front support seat is installed at one end of the fixing frame extending to the outside of the protruding wing. A main wing inner support frame that can move horizontally inside the main wing is fixedly sleeved outside the front support seat. First locking mechanisms and second locking mechanisms corresponding to each elastic support mechanism are also installed on the fixing frame. One end of the first locking mechanism is connected with a pulling rope for pulling the first locking mechanism out of the elastic support mechanism. One end of the pulling rope is fixedly connected to the main wing. Among them, when the protruding wing does not protrude, the first locking mechanism is used to lock the elastic support mechanism to ensure that the elastic support mechanism is in a compressed state. After the protruding wing completely protrudes, the first locking mechanism disengages from the elastic support mechanism, and the second locking mechanism is used to lock the elastic support mechanism to prevent the elastic support mechanism from rebounding.

[0007] The inner edge of the end of the main wing adjacent to the protruding wing is circumferentially provided with a main wing inner lining plate. The inner wall of the end of the protruding wing adjacent to the main wing is provided with a protruding wing inner lining plate. One end of the protruding wing inner lining plate extends to the outside of the protruding wing and abuts against the side end face of the main wing inner support frame. The protruding wing inner lining plate includes a lining section located inside the protruding wing and an outer edge section located outside the protruding wing. A step is provided at the connection between the outer edge section and the lining section. After the protruding wing protrudes, the lower end face of the main wing inner lining plate is closely attached to the upper end face of the outer edge section, and the side end face of the main wing inner support frame is attached to the side end face of the main wing inner lining plate. The thickness of the main wing inner lining plate is equal to the height of the step, and the thickness of the main wing is equal to the thickness of the protruding wing.

[0008] Preferably, the protruding wing includes an upper wing plate and a lower wing plate, a leading edge skin connecting the leading edges of the upper wing plate and the lower wing plate, and a trailing edge skin connecting the trailing edges of the upper wing plate and the lower wing plate.

[0009] Preferably, the elastic support mechanism includes a lower support plate and an upper support plate. A lower sleeve extending upward is provided on the lower support plate. An upper sleeve extending into the lower sleeve is provided on the upper support plate. A stop protrusion is circumferentially provided on the inner wall of the lower sleeve. The stop protrusion is closely attached to the outer wall of the upper sleeve. A flanging is circumferentially provided on the outer wall of one end of the upper sleeve extending into the lower sleeve. The outer end face of the flanging is closely attached to the inner wall of the lower sleeve.

[0010] A first compression spring is installed in the lower sleeve. The top of the first compression spring extends into the upper sleeve.

[0011] A first jack and a second jack communicating with its interior are provided on the outer wall of the lower sleeve.

[0012] Preferably, a first slot corresponding to the first jack is provided on the side wall of the fixing frame. A first through hole communicating with the first jack is provided at the bottom of the first slot.

[0013] The first locking mechanism includes a guide seat screwed with the notch of the first slot, the guide seat is provided with a guide hole connected with the inside of the first slot, an unlocking rod is inserted in the guide hole, one end of the unlocking rod extends into the first slot and penetrates into the first through hole, and the other end extends out of the guide seat, a pressure plate is circumferentially provided on the outer wall of the unlocking rod located in the first slot, and a connecting hole is provided outside the unlocking rod located outside the guide seat, a pull rope is inserted in the connecting hole, and the other end of the pull rope is fixedly connected to the main wing;

[0014] A second compression spring sleeved on the unlocking rod is provided between the pressure plate and the guide seat;

[0015] When the extended wing is not extended from the main wing, one end of the unlocking rod penetrates into the first insertion hole from the first through hole and is inserted into the lower sleeve, and the lower end surface of the unlocking rod located in the lower sleeve abuts against the upper end surface of the flange;

[0016] After the extended wing is fully extended from the main wing, one end of the unlocking rod is pulled out from the first insertion hole into the first through hole.

[0017] Preferably, the fixing frame has second slots corresponding to the second plug hole on opposite side walls, and the second slots have second through holes penetrating the second plug hole at the bottom;

[0018] The second locking mechanism includes a limit seat screwed with the notch of the second slot, a limit groove is provided at one end of the limit seat located in the second slot, a limit plate that can slide in the second slot is provided in the second slot, a locking pin is provided at one end of the limit plate, one end of the locking pin is inserted into the second through hole, a third compression spring is provided in the limit groove, and one end of the third compression spring abuts against the limit plate;

[0019] When the extended wing is not extended from the main wing, one end of the lock pin abuts against the outer wall of the lower sleeve;

[0020] After the extended wing is fully extended from the main wing, one end of the lock pin extends from the second insertion hole into the lower sleeve, and the upper end surface of the lock pin overlaps with the flange.

[0021] Preferably, the fixing frame comprises a long plate, and a plurality of mounting grooves matching the outer wall of the lower sleeve are arranged at intervals along the length of one side of the long plate;

[0022] It also includes a single pressing block corresponding to each installation groove one by one, a docking groove matching the outer wall of the lower sleeve is provided on one side of the single pressing block, and the single pressing block is detachably connected to the long plate;

[0023] The single pressing block and the long plate are provided with second slots opposite to each other;

[0024] The first slot is arranged on the side wall of the long board.

[0025] Preferably, it comprises two fixed frames arranged at intervals, the two fixed frames are connected by a connecting rod, and the extending mechanism is detachably connected to the connecting rod.

[0026] Preferably, the inner support frame of the main wing is fixedly connected to the front support seat by screws.

[0027] Preferably, one end of the extending mechanism is fixed inside the main wing through a mounting seat;

[0028] The mounting seat includes a lower module and an upper module. The top end of the lower module is provided with a fixing groove. The opposite sides of the fixing groove communicate with the side wall of the lower module. The bottom of the fixing groove is provided with a fixing hole. The upper module is provided with a fixing perforation corresponding to the fixing hole. The positioning pin penetrates from the fixing perforation into the fixing hole.

[0029] Preferably, rear support seats for supporting the rear end of the main wing are provided on both sides of the mounting seat; a plurality of weight reduction holes are arranged at intervals along the length of the long plate.

[0030] Compared with the prior art, the deformable wing with an elastic support self-locking function and a flush wing surface provided by the present invention has the following advantages:

[0031] 1. For the deformable wing with an elastic support self-locking function and a flush wing surface provided by the present invention, in the initial state, the extending wing is inside the main wing, and the first locking mechanism locks the elastic support mechanism. The locking of the elastic support mechanism can ensure the relative static state of the upper wing surface and the lower wing surface of the extending wing, reduce the friction between the extending wing and the main wing, ensure the wing surface, and at the same time ensure that the deformable wing is easier to push out; when deployment is required, the extending mechanism is activated, and the extending mechanism pushes out the extending wing. During the extending process, since one end of the pull rope is fixedly connected to the main wing and the other end of the pull rope is connected to the first locking mechanism, the pull rope pulls the first locking mechanism out of the elastic support mechanism, and the elastic support mechanism is released. After the extending wing is completely pushed out, the first locking mechanism is completely disengaged, and the elastic support mechanism pops out and extends longitudinally to support the upper end surface and the lower end surface of the extending wing. Under the action of the elastic support mechanism, the upper end surface and the lower end surface of the extending wing will also move longitudinally, so that the upper end surface and the lower end surface of the extending wing are flush with the upper end surface and the lower end surface of the main wing. The second locking mechanism locks the elastic support mechanism, and the elastic support mechanism is locked longitudinally and does not rebound. Then, through the mutual limitation of the inner lining plate, the inner lining section, the outer edge section of the extending wing and the inner support frame of the main wing, after the extending wing is completely extended, there is no step at the connection between the extending wing and the main wing, and the outer end surface of the extending wing is flush with the outer end surface of the main wing, solving the technical problem that the starting outer shape of the wing surface is not smooth and discontinuous after deformation of the existing deformable wing with an elastic support self-locking function and a flush wing surface; the extending wing and the main wing are locked to form a rigid body together, and the two do not have the conditions for relative axial or radial movement.

[0032] 2. The variable wing with elastic support and self-locking function and flush wing surfaces provided by the present invention designs a first locking mechanism and a second locking mechanism. The first locking mechanism ensures the relative rest of the upper wing surface and the lower wing surface of the extended wing before extension, fully reducing the friction between it and the main wing. While protecting the wing surface, it ensures that the extended wing is easier to push out; the second locking mechanism ensures that after the extended wing extends, the upper wing surface and the lower wing surface will not return to their original states, ensuring the stability of the extended wing.

[0033] 3. For the variable wing with elastic support and self-locking function and flush wing surfaces provided by the present invention, one end of the extended wing combines an extended wing inner lining plate and a main wing inner support frame to ensure the accuracy of guidance.

[0034] 4. The variable wing with elastic support and self-locking function and flush wing surfaces provided by the present invention meets the actuation requirements, has a high integration level, is small in size, light in weight, has a simple structure, high working stability and high reliability. The invention has the characteristics of extremely low part manufacturing cost, excellent assembly processability, and extremely low comprehensive cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a schematic structural diagram of the variable wing with elastic support and self-locking function and flush wing surfaces of the present invention (the extended wing is not shown);

[0037] Figure 2 It is a schematic structural diagram of the variable wing with elastic support and self-locking function and flush wing surfaces of the present invention (part of the extended wing is shown);

[0038] Figure 3 It is a schematic structural diagram of the variable wing with elastic support and self-locking function and flush wing surfaces of the present invention (the extended wing is fully shown);

[0039] Figure 4 It is a schematic structural diagram of the variable wing with elastic support and self-locking function and flush wing surfaces in the present invention (partial internal view);

[0040] Figure 5 It is a schematic structural diagram of the variable wing with elastic support and self-locking function and flush wing surfaces in the present invention (partial internal view);

[0041] Figure 6Assembly drawing of the fixing bracket, elastic support mechanism, first locking mechanism and second locking mechanism described in the present invention (partial top view, the protruding wing not released);

[0042] Figure 7 is Figure 6 B-B cross-sectional view of;

[0043] Figure 8 is Figure 6 A-A cross-sectional view of;

[0044] Figure 9 Assembly drawing of the fixing bracket, elastic support mechanism, first locking mechanism and second locking mechanism described in the present invention (partial top view, the protruding wing released);

[0045] Figure 10 is Figure 7 C-C cross-sectional view of;

[0046] Figure 11 is Figure 7 D-D cross-sectional view of;

[0047] Figure 12 Schematic diagram of the structure of the deformable wing with elastic support self-locking function and flush wing surface in the present invention (cross-sectional view, the protruding wing not extended);

[0048] Figure 13 is Figure 12 Enlarged view at E in;

[0049] Figure 14 is Figure 12 Enlarged view at F in;

[0050] Figure 15 Schematic diagram of the structure of the deformable wing with elastic support self-locking function and flush wing surface in the present invention (cross-sectional view, the protruding wing fully extended);

[0051] Figure 16 is Figure 15 Enlarged view at G in;

[0052] Figure 17 Schematic diagram of the structure of the fixing bracket described in the present invention (partial view);

[0053] Figure 18 Schematic diagram of the structure of the fixing bracket described in the present invention (partial view);

[0054] Figure 19 Schematic diagram of the structure of the deformable wing with elastic support self-locking function and flush wing surface in the present invention (main wing and protruding wing removed)

[0055] Figure 20 Schematic diagram of the structure of the mounting seat described in the present invention.

[0056] Description of the reference numerals:

[0057] 1. Main wing; 2. Extended wing; 21. Upper wing plate; 22. Lower wing plate; 23. Leading edge skin; 24. Trailing edge skin; 3. Extension mechanism; 4. Fixing frame; 41. First slot; 411. First perforation; 42. Second slot; 43. Long plate; 44. Single pressure block; 421. Second perforation; 431. Weight reduction hole; 5. Elastic support mechanism; 51. Lower support plate; 52. Upper support plate; 53. Lower sleeve; 54. Upper sleeve; 55. Flange; 56. First compression spring; 57. First jack; 58. Second jack; 512. Stopping projection; 6. First locking mechanism; 61. Guide seat; 611. Guide hole; 62. Unlocking rod; 621. Pressure plate; 63. Second compression spring; 7. Second locking mechanism; 71. Limiting seat; 72. Limiting plate; 73. Locking pin; 74. Third compression spring; 711. Limiting groove; 8. Inner lining plate of the main wing; 9. Inner lining plate of the extended wing; 91. Inner lining section; 92. Outer edge section; 10. Inner support frame of the main wing; 15. Connecting rod; 16. Front support seat; 17. Mounting seat; 171. Lower module; 172. Upper module; 173. Positioning pin; 1711. Fixing groove; 1721. Fixing perforation; 18. Rear support seat. Detailed implementation manners

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 shown, a deformable wing provided in this embodiment with an elastic support self-locking function and a flush wing surface includes a main wing 1 and a protruding wing 2. The protruding wing 2 is inserted into the main wing 1. An extension mechanism 3 is fixed in the inner cavity of the main wing 1. A fixing frame 4 is provided in the inner cavity of the protruding wing 2. Elastic support mechanisms 5 for supporting the upper and lower end surfaces of the protruding wing 2 are installed at intervals along the length on the fixing frame 4. The elastic support mechanisms 5 are detachably connected to the protruding wing 2, and the fixing frame 4 is detachably connected to the extension mechanism 3. One end of the fixing frame 4 extends outside the protruding wing 2. A front support seat 16 is installed at one end of the fixing frame 4 extending outside the protruding wing 2. A main wing inner support frame 10 that can move horizontally inside the main wing 1 is fixedly sleeved outside the front support seat 16. First locking mechanisms 6 and second locking mechanisms 7 corresponding to each elastic support mechanism 5 are also installed on the fixing frame 4. One end of the first locking mechanism 6 is connected to a pulling rope for pulling the first locking mechanism 6 out of the elastic support mechanism 5, and one end of the pulling rope is fixedly connected to the main wing 1; wherein, when the protruding wing 2 is not extended, the first locking mechanism 6 is used to lock the elastic support mechanism 5 to ensure that the elastic support mechanism 5 is in a compressed state. After the protruding wing 2 is fully extended, the first locking mechanism 6 disengages from the elastic support mechanism 5, and the second locking mechanism 7 is used to lock the elastic support mechanism 5 to prevent the elastic support mechanism 5 from rebounding; a main wing inner lining plate 8 is provided on the circumferential inner edge of one end of the main wing 1 adjacent to the protruding wing 2. An extending wing inner lining plate 9 is provided on the inner wall of one end of the protruding wing 2 adjacent to the main wing 1. One end of the extending wing inner lining plate 9 extends outside the protruding wing 2 and abuts against the side end surface of the main wing inner support frame 10. The extending wing inner lining plate 9 includes a lining section 91 located inside the protruding wing 2 and an outer edge section 92 located outside the protruding wing 2. A step is provided at the connection between the outer edge section 92 and the lining section 91. After the protruding wing 2 extends, the lower end surface of the main wing inner lining plate 8 is closely attached to the upper end surface of the outer edge section 92, and the side end surface of the main wing inner support frame 10 is attached to the side end surface of the main wing inner lining plate 8. The thickness of the main wing inner lining plate 8 is equal to the height of the step, and the thickness of the main wing 1 is equal to the thickness of the protruding wing 2.

[0062] The deformable wing with elastic support self-locking function and flush wing surfaces provided by the present invention has an initial state where the extended wing 2 is inside the main wing 1. The first locking mechanism 6 locks the elastic support mechanism 5. The elastic support mechanism 5 is detachably connected to the extended wing 2. The locking of the elastic support mechanism 5 can ensure the relative rest of the upper and lower wing surfaces of the extended wing, reduce the friction between the extended wing and the main wing, and while ensuring the wing surfaces, ensure that the deformable wing is easier to push out. When deployment is required, the extension mechanism 3 is activated. The extension mechanism 3 pushes out the extended wing 2. During the extension process, since one end of the pull rope is fixedly connected to the main wing 1 and the other end is connected to the first locking mechanism, the pull rope pulls the first locking mechanism 6 out of the elastic support mechanism 5, and the elastic support mechanism 5 is released. After the extended wing 2 is fully pushed out, the first locking mechanism 6 is completely disengaged, and the elastic support mechanism 5 pops out and extends longitudinally to support the upper and lower end surfaces of the extended wing 2. Since the extended wing 2 is made of a flexible material, under the action of the elastic support mechanism 5, the upper and lower end surfaces of the extended wing 2 are flush with the upper and lower end surfaces of the main wing. The second locking mechanism 7 locks the elastic support mechanism 5. The elastic support mechanism 5 is locked longitudinally and does not rebound. Then, through the mutual limitation of the extended wing inner lining plate 9, the inner lining section 91, the outer edge section 92 and the main wing inner support frame 10, after the extended wing 2 is fully extended, there is no step at the connection between the extended wing 2 and the main wing, and the outer end surface of the extended wing 2 is flush with the outer end surface of the main wing 1, solving the technical problem that the starting outer shape of the wing surface is not smooth and continuous after deformation of the existing deformable wing with elastic support self-locking function and flush wing surfaces; the extended wing and the main wing are locked together to form a rigid body, and the two do not have the conditions for relative axial or radial movement.

[0063] The main wing inner lining plate 8 of the present invention can be connected to the main wing 1 by bonding or can be prepared by a mold and integrally formed, and one of the above methods can be selected according to needs.

[0064] The extended wing inner lining plate of the present invention is designed in a split manner, including an upper extended wing inner lining plate and a lower extended wing inner lining plate. The upper extended wing inner lining plate is connected to the upper wing plate of the extended wing, and the lower extended wing inner lining plate is connected to the lower wing plate of the extended wing.

[0065] The extension mechanism of the present invention is an electric push rod.

[0066] Such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown in the figure, the extended wing 2 of this embodiment includes an upper wing panel 21 and a lower wing panel 22, a leading edge skin 23 connecting the leading edges of the upper wing panel 21 and the lower wing panel 22, and a trailing edge skin 24 connecting the trailing edges of the upper wing panel 21 and the lower wing panel 22; the outer end of the leading edge fairing strip 11 is fixedly connected to the leading edge skin 23; the outer end of the trailing edge fairing strip 12 is fixedly connected to the trailing edge skin 24, and the leading edge fairing strip 11 and the trailing edge fairing strip 12 are movably connected to the upper wing panel 21 and the lower wing panel 22.

[0067] The upper wing panel 21, the lower wing panel 22, the leading edge skin 23, the trailing edge skin 24, the leading edge fairing strip 11 and the trailing edge fairing strip 12 of the present invention are designed separately, which is convenient for assembly; after assembly, during the extension process of the extended wing, the upper wing panel 21 and the lower wing panel 22 move upward and downward longitudinally respectively, driving the leading edge skin 23 and the trailing edge skin 24 to move towards the center direction transversely.

[0068] The connection of the leading edges of the upper wing panel 21 and the lower wing template 22 of the present invention is arranged in a stepped manner, the leading edge skin 23 is arranged in a curved shape, and the inner sides of both ends of the leading edge skin 23 are provided with front connecting surfaces that match the connection of the upper wing panel 21 and the lower wing template 22 and are in a stepped shape, and the leading edge skin 23 is fixedly bonded to the upper wing panel 21 and the lower wing template 22.

[0069] The connection of the trailing edges of the upper wing panel 21 and the lower wing template 22 of the present invention is arranged in a stepped manner, the trailing edge skin 24 is arranged in a curved shape, and the inner sides of both ends of the trailing edge skin 24 are provided with rear connecting surfaces that match the connection of the upper wing panel 21 and the lower wing template 22 and are in a stepped shape, and the trailing edge skin 24 is fixedly bonded to the upper wing panel 21 and the lower wing template 22.

[0070] Such as Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11As shown in the figure, the elastic support mechanism 5 of this embodiment includes a lower support plate 51 and an upper support plate 52. A lower sleeve 53 extending upward is provided on the lower support plate 51, and an upper sleeve 54 extending into the lower sleeve 53 is provided on the upper support plate 52. A stop protrusion 512 is circumferentially provided on the inner wall of the lower sleeve 53, and the stop protrusion 512 is in close contact with the outer wall of the upper sleeve 54. A flanging 55 is circumferentially provided on the outer wall of one end of the upper sleeve 54 extending into the lower sleeve 53, and the outer end surface of the flanging 55 is in close contact with the inner wall of the lower sleeve 53. A first compression spring 56 is installed in the lower sleeve 53, and the top of the first compression spring 56 extends into the upper sleeve 54. A first jack 57 and a second jack 58 communicating with its interior are provided on the outer wall of the lower sleeve 53. The upper support plate 52 can support the upper wing surface of the protruding wing 2, and the lower support plate 51 can support the lower wing surface of the protruding wing 2. A stack of compression springs is provided between the upper support plate 51 and the lower support plate 52. Under the action of an external force, they can move relatively closer, and in the absence of an external force, they can move relatively farther away, so as to realize the longitudinal movement of the upper and lower end surfaces of the protruding wing. The structural design is simple and the stability is good.

[0071] As Figure 7 and Figure 11As shown, in this embodiment, a first slot 41 corresponding to the first insertion hole 57 is provided on the side wall of the fixing frame 4, and a first through hole 411 penetrating the first insertion hole 57 is provided at the bottom of the first slot 41; the first locking mechanism 6 includes a guide seat 61 screwed with the notch of the first slot 41, and a guide hole 611 communicating with the inside of the first slot 41 is provided on the guide seat 61, and an unlocking rod 62 is inserted in the guide hole 611, and one end of the unlocking rod 62 extends into the first slot 41 and penetrates into the first through hole 411, and the other end extends out of the guide seat 61 and is located in the first slot A pressure plate 621 is provided on the outer wall of the unlocking rod 62 in the inner part of the main wing 41. A connecting hole is provided on the outer part of the unlocking rod 62 outside the guide seat 61. A pull rope is passed through the connecting hole. The other end of the pull rope is fixedly connected to the main wing 1. A second compression spring 63 sleeved on the unlocking rod 62 is provided between the pressure plate 621 and the guide seat 61. When the extended wing 2 is not extended from the main wing 1, one end of the unlocking rod 62 penetrates from the first through hole 411 into the first plug hole 57 and is inserted into the lower sleeve 53. The lower end surface of the unlocking rod 62 located in the lower sleeve 53 abuts against the upper end surface of the flange 55. The extended wing 2 is extended from the main wing 1. After fully extended, one end of the unlocking rod 62 is pulled out from the first insertion hole 57 into the first through hole 411; through the above structural design, it can be ensured that the elastic support mechanism 5 is locked before the extended wing is extended, and the first compression spring is in a compressed state, reducing the friction between the upper wing plate 21 and the lower wing plate 22 and the main wing 1, protecting the wing surface while ensuring the extension of the extended wing 2. During assembly, the lower support plate 51 and the upper support plate 52 are compressed so that the first insertion hole 57 and the first through hole 411 are connected, and one end of the unlocking rod 62 is extended from the first through hole 411 into the first insertion hole 57 Inside, the movement of the flange 55 in the longitudinal direction is restricted, and in the transverse direction, the pressure plate 621, the second compression spring 63 and the guide seat 61 work together to limit the unlocking rod 62; after the extending wing is extended, the pull rope drags the unlocking rod 62 to move outward, and one end of the unlocking rod 62 escapes from the first plug hole 57. Under the action of the first compression spring 56, the lower support plate 51 and the upper support plate 52 move away from each other, the first plug hole 57 and the first through hole 411 are no longer connected, and one end of the unlocking rod 62 abuts against the outer wall of the lower sleeve 53, thereby realizing the release of the lower support plate 51 and the upper support plate 52.

[0072] The first slot 41 of the present invention is arranged at an angle to the side end surface of the fixing frame 4, so as to facilitate the pulling of the pull rope.

[0073] like Figure 8 , Figure 10 , Figure 17 , Figure 18As shown in the figure, on the opposite side walls of the fixing bracket 4 of this embodiment, there are second slots 42 corresponding to the second jacks 58. At the bottom of the second slot 42, there is a second through hole 421 communicating with the second jack 58. The second locking mechanism 7 includes a limit seat 71 screwed to the notch of the second slot 42. One end of the limit seat 71 located in the second slot 42 is provided with a limit groove 711. In the second slot 42, there is a limit plate 72 that can slide in the second slot 42. One end of the limit plate 72 is provided with a locking pin 73. One end of the locking pin 73 penetrates into the second through hole 421. In the limit groove 711, there is a third compression spring 74. One end of the third compression spring 74 abuts against the limit plate 72. When the extending wing 2 does not extend from the main wing 1, one end of the locking pin 73 abuts against the outer wall of the lower sleeve 53. After the extending wing 2 completely extends from the main wing 1, one end of the locking pin 73 extends from the second jack 58 into the lower sleeve 53, and the upper end surface of the locking pin 73 overlaps with the flanging 55. Through the above structural design, after the extending wing 2 completely extends, the elastic support mechanism 5 can be locked and fixed, that is, the lower support plate 51 and the upper support plate 52 will not rebound and will not return to their original state, ensuring the stability of the deformed wing surface. That is, after the extending wing 2 completely extends, the second jack 58 communicates with the second through hole 421. Under the action of the third compression spring 74, the limit plate 72 moves towards the second jack 58. The locking pin 73 sequentially penetrates from the second through hole 421 and the second jack 58 into the lower sleeve 53, and the upper end surface of the locking pin 73 overlaps with the flanging 55, restricting the longitudinal movement of the upper sleeve 54. The cooperation of the limit plate 72, the third compression spring 74 and the limit seat 71 restricts the lateral movement of the locking pin 73, thereby realizing the locking and fixing of the elastic support mechanism 5.

[0074] As Figure 4 , Figure 5 shown in the figure, the fixing bracket 4 of this embodiment includes a long plate 43. On one side of the long plate 43, a plurality of installation grooves matching the outer wall of the lower sleeve 53 are arranged at intervals along the length. It also includes single pressing blocks 44 corresponding to each installation groove one by one. One side of the single pressing block 44 is provided with a docking groove matching the outer wall of the lower sleeve 53. The single pressing block 44 is detachably connected to the long plate 43. Opposite second slots 42 are provided on the single pressing block 44 and the long plate 43. The first slot 41 is arranged on the side wall of the long plate 43. Through the design of the above structure, the installation and fixation of the elastic support mechanism 5 are convenient.

[0075] In some specific embodiments, three elastic support mechanisms 5 are installed on the long plate 43 at intervals, and the intervals can also be set according to the length of the extending wing 2.

[0076] As Figure 4 , Figure 5 shown in the figure, this embodiment includes two fixing brackets 4 arranged at intervals. The two fixing brackets 4 are connected by a connecting rod 15. The extending mechanism 3 is detachably connected to the connecting rod 15. Through the above structural design, the symmetric setting can ensure the balanced supporting force for the wing surface of the extending wing and ensure the flatness of the wing surface of the extending wing.

[0077] As shown Figure 4 in the figure, one end of the fixing bracket 4 adjacent to the main wing 1 is provided with a front support seat 16 for supporting one end of the main wing 1. The two front support seats 16 are fixedly connected to the fixing bracket 4 through double pressing blocks. The double pressing blocks include pressing plates, and two docking grooves are arranged at intervals on one side of the pressing plates, which is convenient for installation and disassembly.

[0078] As shown Figure 20 in the figure, one end of the extending mechanism 3 of this embodiment is fixed in the main wing 1 through a mounting seat 17; the mounting seat 17 includes a lower module 171 and an upper module 172. A fixing groove 1711 is provided at the top end of the lower module 171. The opposite sides of the fixing groove 1711 communicate with the side wall of the lower module 171. A fixing hole is provided at the bottom of the fixing groove 1711. A fixing through hole 1721 corresponding to the fixing hole is provided on the upper module 172. The positioning pin 173 penetrates through the fixing through hole 1721 and is screwed with the fixing hole; through the design of the above structure, it is convenient for the connection between the extending mechanism 3 and the mounting seat 17, and the connection between the mounting seat 17 and the main wing 1.

[0079] As shown Figure 19 in the figure, rear support seats 18 for supporting the rear end of the main wing 1 are provided on both sides of the mounting seat 17 of this embodiment; screw holes are provided on the upper end surface and the lower end of the rear support seats 18. Through bolts, the rear support seats 18 are fixedly connected to the main wing to realize the support of the rear end of the main wing and ensure the flatness of the main wing surface.

[0080] The main wing 1 of the present invention is prepared from composite materials. The upper wing plate, lower wing plate, front wing edge profile strip 11 and rear wing edge profile strip 12 of the extending wing 2 are prepared from composite materials.

[0081] A plurality of weight reduction holes 431 are arranged at intervals along the length of the long plate 43 of the present invention, without excessively increasing the weight of the deformable wing with elastic support self-locking function and a flat wing surface.

[0082] A pull rope through hole 151 through which a pull rope passes is provided on the connecting rod 15 of the present invention. The pull rope can pass through the pull rope through hole 151 and be fixedly connected to the rear support seat 18 in the main wing 1.

[0083] The mounting plate of the present invention includes an upper plate and a lower plate. Connecting rod connection holes for connecting with the connecting rod 15 of the connecting rod and extending mechanism connection holes for connecting with the extending mechanism 3 are provided on the upper plate and the lower plate, which is convenient for the connection between the extending mechanism 3 and the connecting rod 15.

[0084] The assembly process of the deformable wing with elastic support self-locking function and a flat wing surface in this embodiment is as follows:

[0085] 1) Place the fixing bracket 4, elastic support mechanism 5, first locking mechanism 6, second locking mechanism 7, extending mechanism 3, mounting seat 17, pull rope and front support seat 16 as Figure 19For assembly, one end of the extending mechanism 3 is fixedly connected to the connecting rod 15 through a mounting plate, the first locking mechanism 6 locks the elastic support mechanism 5, and the pull rope passes through the pull rope perforation 151 of the connecting rod 15;

[0086] 2) Assemble the extending wing 2. The upper wing plate of the extending wing 2 and the upper extending wing inner lining plate are assembled into an upper wing plate assembly, and the lower wing plate of the extending wing and the lower extending wing inner lining plate are assembled into a lower wing plate assembly. Then, assemble the upper wing plate assembly, the lower wing plate assembly, the front wing edge skin, and the rear wing edge skin; Assemble the fixed frame 4 assembled in step 1 with the extending wing 2. The elastic support mechanism 5 is detachably connected to the extending wing through bolts;

[0087] 3) Install the main wing 1 inner lining plate inside the main wing. Assemble the extending wing assembled in step 2 with the main wing. Put the outer sleeve of the main wing inner support frame 10 on the front support seat 16 and fix it with bolts; Connect the extending mechanism 3 to the main wing 1 through the mounting seat 17 and bolts;

[0088] 4) Fix the rear support seat 18 inside the main wing 1 through bolts. Fix the two pull ropes on the corresponding rear support seats 18 respectively. The two rear support seats 18 are arranged on both sides of the mounting seat 17.

[0089] The process of the deformable wing extending:

[0090] 1) Start the extending mechanism 3, and the extending mechanism 3 pushes the fixed frame 4 to extend towards the outer end of the main wing 1.

[0091] 2) When the fixed frame 4 moves outwards, it drives the elastic support mechanism 5 to move outwards, and then drives the extending wing 2 to extend outwards. Immediately before it is fully extended, the pull rope pulls the first locking mechanism 6 to release the elastic support mechanism 5. Under the action of the first spring, the upper wing plate and the lower wing plate of the extending wing 2 move upwards and downwards respectively. When the extending wing is fully extended, the second locking mechanism 7 will lock the extending wing to ensure the positioning of the upper wing plate and the lower wing plate of the extending wing. Under the combined action of the main wing inner lining plate 8, the extending wing inner lining plate 9, and the main wing inner support frame 10, the movement of the extending wing 2 in the length direction is restricted. Considering that the airfoil is a non-circular cross-section, its axial rotation is restricted.

[0092] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A deformable wing with elastic support and self-locking function and flush wing surface, characterized in that: It includes a main wing (1) and an extended wing (2). The extended wing (2) is inserted into the main wing (1). An extension mechanism (3) is fixed in the inner cavity of the main wing (1). A fixing frame (4) is arranged in the inner cavity of the extended wing (2). Elastic support mechanisms (5) for supporting the upper and lower end faces of the extended wing (2) are installed at intervals along the length on the fixing frame (4). The elastic support mechanisms (5) are detachably connected to the extended wing (2). The fixing frame (4) is detachably connected to the extension mechanism (3). One end of the fixing frame (4) extends outside the extended wing (2). A front support seat (16) is installed at one end of the fixing frame (4) extending outside the extended wing (2). A main wing inner support frame (10) that can move horizontally inside the main wing (1) is fixedly sleeved outside the front support seat (16). First locking mechanisms (6) and second locking mechanisms (7) corresponding to each elastic support mechanism (5) are also installed on the fixing frame (4). One end of the first locking mechanism (6) is connected to a pull rope for pulling the first locking mechanism (6) out of the elastic support mechanism (5). One end of the pull rope is fixedly connected to the main wing (1). Among them, when the extended wing (2) is not extended, the first locking mechanism (6) is used to lock the elastic support mechanism (5) to ensure that the elastic support mechanism (5) is in a compressed state. After the extended wing (2) is fully extended, the first locking mechanism (6) disengages from the elastic support mechanism (5), and the second locking mechanism (7) is used to lock the elastic support mechanism (5) to prevent the elastic support mechanism (5) from rebounding. The inner edge of one end of the main wing (1) adjacent to the extended wing (2) is circumferentially provided with a main wing inner lining plate (8). The inner wall of one end of the extended wing (2) adjacent to the main wing (1) is provided with an extended wing inner lining plate (9). One end of the extended wing inner lining plate (9) extends outside the extended wing (2) and abuts against the side end face of the main wing inner support frame (10). The extended wing inner lining plate (9) includes a lining section (91) located inside the extended wing (2) and an outer edge section (92) located outside the extended wing (2). A step is provided at the connection between the outer edge section (92) and the lining section (91). After the extended wing (2) extends, the lower end face of the main wing inner lining plate (8) is closely attached to the upper end face of the outer edge section (92), and the side end face of the main wing inner support frame (10) is attached to the side end face of the main wing inner lining plate (8). The thickness of the main wing inner lining plate (8) is equal to the height of the step, and the thickness of the main wing (1) is equal to the thickness of the extended wing (2). The elastic support mechanism (5) includes a lower support plate (51) and an upper support plate (52). The lower support plate (51) is provided with a lower sleeve (53) extending upward. The upper support plate (52) is provided with an upper sleeve (54) extending into the lower sleeve (53). A stop protrusion (512) is circumferentially provided on the inner wall of the lower sleeve (53). The stop protrusion (512) is closely attached to the outer wall of the upper sleeve (54). A flange (55) is circumferentially provided on the outer wall of one end of the upper sleeve (54) extending into the lower sleeve (53). The outer end face of the flange (55) is closely attached to the inner wall of the lower sleeve (53). A first compression spring (56) is installed inside the lower sleeve (53), and the top of the first compression spring (56) extends into the upper sleeve (54); on the outer wall of the lower sleeve (53), there are a first jack (57) and a second jack (58) that communicate with its interior; On the side wall of the fixing frame (4), there is a first slot (41) corresponding to the first jack (57), and at the bottom of the first slot (41), there is a first through hole (411) that penetrates through the first jack (57); The first locking mechanism (6) includes a guide seat (61) screwed to the notch of the first slot (41). On the guide seat (61), there is a guide hole (611) that communicates with the interior of the first slot (41). An unlocking rod (62) is inserted into the guide hole (611). One end of the unlocking rod (62) extends into the first slot (41) and penetrates into the first through hole (411), and the other end extends outside the guide seat (61). On the outer wall of the unlocking rod (62) located in the first slot (41), there is a pressing plate (621) circumferentially. Outside the guide seat (61), there is a connection hole on the unlocking rod (62), and a pulling rope is inserted into the connection hole. The other end of the pulling rope is fixedly connected to the main wing (1); Between the pressing plate (621) and the guide seat (61), there is a second compression spring (63) sleeved on the unlocking rod (62); When the extending wing (2) has not extended from the main wing (1), one end of the unlocking rod (62) penetrates from the first through hole (411) into the first jack (57) and is inserted into the lower sleeve (53). The lower end surface of the unlocking rod (62) located in the lower sleeve (53) abuts against the upper end surface of the flanging (55); After the extending wing (2) has completely extended from the main wing (1), one end of the unlocking rod (62) is pulled out from the first jack (57) into the first through hole (411); On the opposite side walls of the fixing frame (4), there are second slots (42) corresponding to the second jacks (58). At the bottom of the second slots (42), there are second through holes (421) that penetrate through the second jacks (58); The second locking mechanism (7) includes a limiting seat (71) screwed to the notch of the second slot (42). At one end of the limiting seat (71) located in the second slot (42), there is a limiting groove (711). In the second slot (42), there is a limiting plate (72) that can slide in the second slot (42). At one end of the limiting plate (72), there is a locking pin (73). One end of the locking pin (73) penetrates into the second through hole (421). In the limiting groove (711), there is a third compression spring (74), and one end of the third compression spring (74) abuts against the limiting plate (72); When the extending wing (2) has not extended from the main wing (1), one end of the locking pin (73) abuts against the outer wall of the lower sleeve (53); After the extending wing (2) has completely extended from the main wing (1), one end of the locking pin (73) extends from the second jack (58) into the lower sleeve (53), and the upper end surface of the locking pin (73) overlaps with the flanging (55); 2. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The extending wing (2) includes an upper wing plate (21) and a lower wing plate (22), a leading edge skin (23) that connects the leading edges of the upper wing plate (21) and the lower wing plate (22), and a trailing edge skin (24) that connects the trailing edges of the upper wing plate (21) and the lower wing plate (22).

3. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The fixing frame (4) includes a long board (43), and a plurality of mounting grooves matching the outer wall of the lower sleeve (53) are arranged at intervals along the length on one side of the long board (43); It further includes single pressing blocks (44) corresponding to each mounting groove one by one. A docking groove matching the outer wall of the lower sleeve (53) is provided on one side of the single pressing block (44), and the single pressing block (44) is detachably connected to the long board (43); Second slots (42) are oppositely provided on the single pressing block (44) and the long board (43); The first slot (41) is provided on the side wall of the long board (43).

4. The deformable wing with elastic support self-locking function and flush wing surface according to claim 1, characterized in that: It includes two fixing frames (4) arranged at intervals. The two fixing frames (4) are connected by a connecting rod (15), and the extending mechanism (3) is detachably connected to the connecting rod (15).

5. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The main wing inner support frame (10) is fixedly connected to the front support seat (16) by screws.

6. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: One end of the extending mechanism (3) is fixed inside the main wing (1) through a mounting seat (17); The mounting seat (17) includes a lower module (171) and an upper module (172). A fixing groove (1711) is provided at the top of the lower module (171). The opposite sides of the fixing groove (1711) communicate with the side wall of the lower module (171). A fixing hole is provided at the bottom of the fixing groove (1711). A fixing through hole (1721) corresponding to the fixing hole is provided on the upper module (172), and a positioning pin (173) penetrates from the fixing through hole (1721) into the fixing hole.

7. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 6, characterized in that: Rear support seats (18) for supporting the rear end of the main wing (1) are provided on both sides of the mounting seat (17); A plurality of weight reduction holes (431) are arranged at intervals along the length of the long board (43).

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