A locking structure and unmanned aerial vehicle

Abstract

The embodiments of the present invention provide a locking structure and a drone, and relate to the technical field of drones. The locking structure is used to lock and connect a first component and a second component that are hinged to each other in a drone. The locking structure includes a hook assembly and a lock pin assembly, the hook assembly includes a lock buckle, and the lock pin assembly includes a bayonet. The hook assembly is used to be installed on the first component, and the lock pin assembly is used to be installed on the second component. A part of the bayonet is located between the first component and the second component, and is engaged or disengaged with the lock buckle. When the lock buckle is engaged with the bayonet pin, the first component can be fixed relative to the second component, and when the lock buckle is disengaged from the bayonet pin, the first component can move relative to the second component. When the locking structure is used to connect the winglet and the wing, the winglet on the drone can be locked or unlocked by engaging or disengaging the lock buckle and the bayonet pin, which greatly reduces the difficulty of locking the winglet, shortens the operation time of unfolding and folding the winglet relative to the wing, and improves the maneuverability of the whole machine assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a locking structure and a unmanned aerial vehicle. Background Art

[0002] Currently, the winglets of fixed-wing or composite-wing UAVs are hinged to the wings in a hinged manner, so that the winglets can rotate relative to the wings, thereby being in an unfolded state or a folded state.

[0003] When the winglet is in an unfolded state relative to the wing, it is conventionally locked and fixed by screws to keep the winglet in an unfolded locked state. However, when the screws are actually locked and assembled, the screws are prone to misalignment or tilted locking, resulting in difficulty in assembly and disassembly. Summary of the invention

[0004] The purpose of the present invention includes, for example, providing a locking structure and a UAV, wherein the locking structure can avoid the problem of difficulty in disassembling and assembling screws when the winglet is locked or unlocked with the wing.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present embodiment provides a locking structure for locking a first component and a second component that are hinged to each other in a drone, the locking structure comprising a hook assembly and a lock pin assembly, the hook assembly comprising a lock buckle, and the lock pin assembly comprising a bayonet pin;

[0007] The hook assembly is used to be installed on the first component, the lock buckle can be located on a side of the first component close to the second component, the lock pin assembly is used to be installed on the second component, a part of the bayonet can be located between the first component and the second component, and the lock buckle is configured to be able to engage with or disengage from the bayonet;

[0008] When the lock catch is engaged with the bayonet pin, the first component can be fixed relative to the second component, and when the lock catch is disengaged from the bayonet pin, the first component can move relative to the second component.

[0009] In an optional embodiment, the lock catch is configured to remain in an initial position engaged with the bayonet pin when no external force is applied, and to rotate around its center to leave the initial position when an external force is applied, and to return to the initial position after the external force is eliminated.

[0010] In an optional embodiment, the hook assembly further includes a torsion spring and an axle pin; the lock buckle includes a clamping portion and a reset portion, the clamping portion is clamped with the bayonet pin, the reset portion is provided with a mounting groove and a rotation center hole, the rotation center hole is provided close to the clamping portion and passes through the mounting groove, the torsion spring is installed in the mounting groove, and the axle pin is simultaneously provided through the rotation center hole and the torsion spring to connect the torsion spring with the lock buckle;

[0011] When there is no external force, the engaging portion can be maintained in the position engaged with the bayonet pin under the action of the torsion spring, and the lock buckle is located in the initial position; when subjected to external force, the engaging portion can rotate around the axle pin to leave the position engaged with the bayonet pin, the lock buckle leaves the initial position, and the torsion spring generates a restoring force. When the external force disappears, the lock buckle returns to the initial position driven by the restoring force of the torsion spring.

[0012] In an optional embodiment, the hook assembly also includes a fixing member that can be fixedly connected to the first component, the fixing member can enclose a movable space with the first component, the lock is installed on the fixing member and is configured to be able to swing in the movable space, and both ends of the axle pin are fixed on the fixing member; the reset portion abuts against the fixing member, one end of the torsion spring abuts against the bottom of the mounting groove, and the other end abuts against the fixing member.

[0013] In an optional embodiment, the fixing member includes a first abutting wall and a second abutting wall that are opposite to each other, the reset portion abuts against the first abutting wall, and the other end of the torsion spring abuts against the second abutting wall.

[0014] In an optional embodiment, the fixing member includes a first fixing body and a second fixing body that are interlocked, and the first abutment wall and the second abutment wall are located on the same side of the second fixing body; the first fixing body is used to be connected to the side of the first component away from the lock, and the second fixing body is used to be connected to the side of the first component close to the lock, and the second fixing body, the first fixing body and the first component can enclose the activity space; the axle pin passes through the second fixing body, the lock, the torsion spring in sequence and is connected to the first fixing body.

[0015] In an optional embodiment, the fixing member also includes a fixing screw, the first fixing body is provided with a first threaded hole and a second threaded hole, the second fixing body is provided with a first through hole corresponding to the first threaded hole, and a second through hole corresponding to the second threaded hole; the fixing screw passes through the first through hole and is threadedly connected to the first threaded hole, and the shaft pin passes through the second through hole, the locking buckle, the torsion spring in sequence and is threadedly connected to the second threaded hole.

[0016] In an optional embodiment, the hook assembly further includes a shifting post, and the shifting post is disposed at an end of the reset portion away from the clamping portion.

[0017] In an optional embodiment, the engaging portion is provided with an engaging notch engaged with the engaging pin, and the opening direction of the engaging notch is the same as the opening direction of the mounting groove.

[0018] In an optional embodiment, the clamping notch is an arc groove with the rotating center hole as the rotation center, and the groove depth of the arc groove is greater than the groove width of the arc groove.

[0019] In an optional embodiment, a shifting post is provided at one end of the resetting portion away from the clamping portion; and a distance between the shifting post and the rotation center hole is greater than a distance between the arc groove and the rotation center hole.

[0020] In an optional embodiment, the thickness of the clamping portion is smaller than the thickness of the resetting portion.

[0021] In an optional embodiment, the reset portion includes a first end and a second end opposite to each other, the first end is closer to the clamping portion relative to the second end, and a thickness dimension of the first end is greater than a thickness dimension of the second end.

[0022] In an optional embodiment, the mounting groove includes a proximal end close to the clamping portion, and a distal end away from the clamping portion, and the side wall thickness of the proximal end is greater than the side wall thickness of the distal end.

[0023] In an optional embodiment, a first retaining wall and a second retaining wall are protrudingly provided on one side of the first component close to the lock catch, and a swing back space is formed between the first retaining wall and the second retaining wall; the lock catch can be swingably arranged in the swing back space, the lock catch can abut against the first retaining wall, one end of the torsion spring abuts against the bottom of the mounting groove, and the other end can abut against the second retaining wall.

[0024] In an optional embodiment, the latch includes a connecting portion and a locking portion that are fixedly connected, the connecting portion is used to be fixed to the second component, the locking portion can be located between the first component and the second component, and the lock can be engaged with or disengaged from the locking portion.

[0025] In an optional embodiment, the lock buckle includes a clamping portion with a clamping notch, and the clamping portion is gap-matched with the clamping notch so that the clamping portion can be clamped with or disengaged from the clamping portion.

[0026] In an optional embodiment, the locking portion includes a first shaft segment, a second shaft segment and a third shaft segment connected in sequence, and the diameter of the second shaft segment is smaller than the diameters of the first shaft segment and the third shaft segment, so that a locking groove is formed between the first shaft segment and the third shaft segment, and the locking buckle can be locked in the locking groove.

[0027] In an optional embodiment, the locking pin assembly also includes a locking piece, which is used to be fixedly connected to the second component, and the locking piece can be located on a side of the second component away from the locking portion; the locking piece is provided with a threaded hole that cooperates with the connecting portion, and the connecting portion can pass through the second component and be threadedly connected to the threaded hole.

[0028] In a second aspect, an embodiment provides a drone, comprising the locking structure described above.

[0029] In an optional embodiment, the drone further comprises a winglet and a wing hinged to each other, the winglet being one of the first component and the second component, and the wing being the other one.

[0030] In an optional embodiment, the hook assembly is arranged on the winglet, and the locking pin assembly is arranged on the wing; when the locking buckle is engaged with the locking pin, the winglet is fixed relative to the wing and is in an unfolded state, and when the locking buckle is disengaged from the locking pin, the winglet moves relative to the wing to switch to a folded state.

[0031] In an optional embodiment, the wing includes a wing side panel, the winglet and the wing side panel are hinged by a hinge, the hinge includes a first page, a second page and a supporting torsion spring; the first page is fixedly connected to the winglet, the second page is fixedly connected to the wing side panel, one end of the supporting torsion spring abuts against the first page, and the other end abuts against the second page, so that the winglet and the wing have a tendency to fold.

[0032] The beneficial effects of the embodiments of the present invention include, for example:

[0033] The first and second components of the drone that are hinged to each other are locked and connected by a locking structure, and the hook assembly in the locking structure can be set on the first component of the drone, and the lock pin assembly can be set on the second component. The first component that is hinged to each other in the drone can be fixed or moved relative to the second component by engaging or disengaging the lock buckle in the hook assembly with the bayonet in the lock pin assembly.

[0034] When the first component and the second component of the drone are the winglet and the wing respectively, the relative fixation between the winglet and the wing of the drone is achieved by the engagement of the lock buckle and the bayonet pin, and the winglet is in an unfolded state when relatively fixed. By disengaging the lock buckle from the bayonet pin, the relative fixation between the winglet and the wing is transformed into relative motion, so that the winglet can be switched from an unfolded state to a folded state. On the basis of ensuring the fixing strength of the winglet, the difficulty of locking the winglet and the wing is greatly reduced.

[0035] The problem in the existing structure that the screws are difficult to install or are easily locked at an angle when the winglet is fixed relative to the wing is improved, thereby shortening the operation time of unfolding and folding the winglet relative to the wing, improving the maneuverability of the whole machine assembly, and having a reasonable design and ingenious structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic diagram of the structure of the winglet in the drone provided in the embodiment of the present application in a folded state;

[0038] Figure 2 A schematic diagram of the structure of the winglet in the drone provided in the embodiment of the present application in the unfolded state;

[0039] Figure 3 A partial schematic diagram of the locking structure provided in the embodiment of the present application in a locked state;

[0040] Figure 4 for Figure 2 Schematic diagram of the decomposition of

[0041] Figure 5 for Figure 2 Schematic diagram of the structure of the middle hinge;

[0042] Figure 6 for Figure 3 An exploded schematic diagram of the middle hook assembly;

[0043] Figure 7 for Figure 6 A schematic diagram of the structure of the middle lock buckle;

[0044] Figure 8 for Figure 6 Schematic diagram of other angles of the middle lock;

[0045] Fig. 9 for Figure 8 Sectional view along section AA;

[0046] Fig.10 for Figure 6 A schematic diagram of the structure in which the middle torsion spring and the lever are installed on the lock;

[0047] Fig.11 for Figure 3 The assembly diagram of the middle hook assembly from the first perspective;

[0048] Fig.12 for Figure 3 The assembly diagram of the middle hook assembly from the second viewing angle;

[0049] Fig.13 for Figure 6 A schematic structural diagram of the first fixed body 15;

[0050] Fig.14 An exploded schematic diagram of a wing side panel and a locking pin assembly in a drone provided in an embodiment of the present application;

[0051] Fig.15 A schematic diagram of the structure of the wing side panel and the lock pin assembly after assembly in the UAV provided in the embodiment of the present application;

[0052] Fig.16 for Fig.12 Schematic diagram of the structure of the middle latch.

[0053] Icons: 01-winglet; 02-wing side panel; 021-first through hole; 023-second through hole; 025-third through hole; 05-hinge; 051-first page; 052-second page; 053-fixing pin; 055-support torsion spring; 10-hook assembly; 11-locking buckle; 112-clamping part; 1125-clamping notch; 113-reset part; 114-installation groove; 115-rotation center hole; 117-installation hole; 12-torsion spring; 13-axle pin; 14-fixing member; 15-first fixed body; 151-protrusion; 152-first threaded hole; 155-second threaded hole; 16-second fixed body; 161-fixed body; 162-first abutting wall; 165-second abutting wall; 166-first through hole; 167-second through hole; 17-movement space; 18-shift column; 20-locking pin assembly; 21-bayonet; 22-connecting part; 23-engaging part; 231-first shaft section; 232-second shaft section; 233-third shaft section; 25-locking member; 251-first fixed threaded hole; 253-second fixed threaded hole; 255-third fixed threaded hole. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0057] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0058] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0059] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0060] Example

[0061] Please refer to Figures 1 to 16 As shown, an embodiment of the present application provides a drone, which includes a fuselage (omitted in the figure), a wing and a winglet 01. The wing includes an upper skin (omitted in the figure), a lower skin (omitted in the figure) and a wing side panel (carbon plate), the upper skin and the lower skin form a main wing with a hollow structure, and the wing side panel is fixedly arranged at the opening of one end of the main wing away from the fuselage. The winglet 01 is hingedly arranged with the wing and the winglet 01 is locked or unlocked by a locking structure.

[0062] The locking structure includes a hook assembly 10 and a lock pin assembly 20. The locking structure can lock and connect the first component and the second component that are hinged to each other in the drone. Specifically, the hook assembly 10 includes a lock buckle 11, and the lock pin assembly 20 includes a bayonet 21. During assembly, the hook assembly 10 is used to be installed on the first component, and the lock buckle 11 can be located on the side of the first component close to the second component. The lock pin assembly 20 is used to be installed on the second component, and a part of the bayonet 21 can be located between the first component and the second component. The lock buckle is configured to be able to engage or disengage with the bayonet. When the lock buckle 11 is engaged with the bayonet 21, the first component can be fixed relative to the second component. When the lock buckle 11 is disengaged from the bayonet 21, the first component can move relative to the second component.

[0063] It is understandable that the first component and the second component can be but are not limited to mutually hinged components such as winglets 01 and wings in the drone. This embodiment is described by taking the locking connection between the winglet 01 and the wing as an example. It should be noted that the winglet 01 is one of the first component and the second component, and the wing is the other. The specific connection depends on actual needs and is not limited in this application. This embodiment is described in detail by taking the winglet 01 as the first component and the wing as the second component, that is, the hook assembly 10 in the locking structure is arranged on the winglet 01, and the locking pin assembly 20 is arranged on the wing.

[0064] Typically, the winglet 01 of a fixed-wing or composite-wing UAV is hinged to the wing via a hinge. Specifically, the winglet and the wing side panel are hinged via a hinge, so that the winglet can rotate relative to the wing. When the inner side wall of the winglet fits with the wing side panel, the winglet is in an expanded state, at which point the winglet is roughly perpendicular to the main wing. When the inner side wall of the winglet fits with the upper surface of the main wing (i.e., the surface of the upper skin), the winglet is in a folded state. Among them, the inner side wall of the winglet 01 is the side wall of the winglet 01 facing the wing side panel, and correspondingly, the outer side wall of the winglet 01 refers to the side wall of the winglet 01 facing away from the wing side panel.

[0065] When the winglet is in the expanded state, it needs to be locked with the wing side panel so that the winglet can be stably maintained in the expanded state. The existing method is to fix it with screws. Specifically, the winglet and the wing side panel are provided with corresponding fixing holes. When the drone is assembled, the winglet needs to be rotated until the inner wall fits with the wing side panel, and then at least two screws are locked from the outer side of the winglet to the wing side panel. The winglet is fixedly connected to the wing side panel by screws so that the winglet remains in the expanded state. When the drone is disassembled, the screws on the winglet need to be removed, and at the same time, the winglet is rotated until the inner wall fits with the upper surface of the main wing, so that the winglet is in a folded state. By adjusting the winglet to the folded state, the volume can be reduced, which is convenient for storage, packaging and transportation.

[0066] The current use of screws for fixing has the following problems:

[0067] First, since the winglets and wing side panels are relatively positioned by hinges, it is difficult to remove the screws when the winglets are fixed to the wing side panels for unfolding and assembly or when the screws are removed and unlocked from the wing side panels for folding and storage. Specifically, during the unfolding and assembly process, it is easy for the screws to not align or be locked in at an angle. During the folding and disassembly process, it is easy for the screws to break or become difficult to remove.

[0068] Second, screws are easy to fall off during actual use, especially in field operations, where it is extremely difficult to find the screws after they fall off.

[0069] Third, using screws to fix the winglets and wing side panels requires special tools and is inconvenient to operate. This results in the winglets taking too long to unfold or fold when the drone is in the field, especially in northern regions in winter, where tightening the screws to unfold the winglets and removing the screws to fold the winglets are extremely inconvenient.

[0070] The embodiment of the present application provides a locking structure, which can lock or unlock the winglet 01 and the wing by engaging or disengaging the hook assembly 10 and the lock pin assembly 20, making it easy to unfold and fold the winglet, and avoiding the problem of difficulty in disassembly and assembly by using screws; the locking structure is used to replace screws to lock the winglet and the wing, so that the winglet can be unfolded and folded without tools, which greatly improves the maneuverability of the whole machine assembly (the ability to unfold the aircraft in a short time, that is, shortens the time it takes for the drone to be unpacked and assembled and ready to fly), and shortens the operating time for operators to assemble and disassemble the drone in the field. No tools are required for assembly, thus shortening the assembly time, facilitating the rapid unfolding or folding of the winglet 01 in the field, and avoiding the problem of the drone being unable to fly due to the loss of assembly parts (screws).

[0071] The locking structure provided in the embodiment of the present application is described in detail below.

[0072] Please refer to Figures 1 to 4 As shown, the locking structure includes a hook assembly 10 and a lock pin assembly 20. The hook assembly 10 includes a lock buckle 11, and the lock pin assembly 20 includes a bayonet 21. The lock buckle 11 is configured to be able to remain in an initial position engaged with the bayonet 21 when no external force is applied, and to be able to rotate around its center to leave the initial position when an external force is applied, and to return to the initial position after the external force is eliminated. The lock buckle 11 leaves the initial position to make way for the bayonet 21 during the process of the bayonet 21 and the lock buckle 11 changing from a disengaged state to a engaged state, or to disengage from the bayonet 21 during the process of the bayonet 21 and the lock buckle 11 changing from a engaged state to a disengaged state.

[0073] The wing includes a main wing and a wing side panel 02 that are fixedly connected, and the winglet 01 is hinged to the wing side panel 02 through a hinge 05. The hook assembly 10 is arranged on the winglet 01, and the lock pin assembly 20 is arranged on the wing side panel 02. However, the present application is not limited to this, and it can be understood that in other embodiments, the hook assembly 10 can also be arranged on the wing side panel 02, and the lock pin assembly 20 can be arranged on the winglet 01, and the specific setting position and connection structure can be adjusted according to actual needs.

[0074] Please refer to Figure 5 As shown, the hinge 05 includes a first leaf 051, a second leaf 052, a fixing pin 053 and a supporting torsion spring 055. The fixing pin 053 is simultaneously penetrated through the first leaf 051, the second leaf 052 and the supporting torsion spring 055. The first leaf 051 is fixedly connected to the winglet 01, and the second leaf 052 is fixedly connected to the wing side panel 02. One end of the supporting torsion spring 055 abuts against the first leaf 051, and the other end abuts against the second leaf 052, so that the first leaf 051 and the second leaf 052 always have a tendency to be spread apart, that is, the winglet 01 and the wing have a tendency to be folded.

[0075] In the present application, the winglet 01 and the wing side panel 02 are hinged by a hinge 05, the hinge 05 has a relatively large fixed position, and the connection between the hook assembly 10 and the winglet 01 also forms a relatively large fixed position, thereby better ensuring the fixing strength of the winglet 01.

[0076] Here, the main functions of the support torsion spring 055 are: first, to reduce the shaking of the winglet 01 during the operation of the drone, and to ensure that the winglet 01 always has an outward opening force when assembled, to ensure that the hook assembly 10 and the lock pin assembly 20 are firmly fixed without obvious matching empty positions. Second, when the winglet 01 is not assembled, the support torsion spring 055 gives the winglet 01 a force to open the angle, to prevent the winglet 01 from frequently colliding with the wing surface (i.e., the upper surface of the main wing, i.e., the surface of the upper skin) without restrictions, causing the paint on the wing surface to be scratched or peeled.

[0077] Please refer to Figure 1 and Figure 3 As shown, the hook assembly 10 includes a lock buckle 11, and the lock pin assembly 20 includes a latch pin 21. A portion of the latch pin 21 is located between the winglet 01 and the wing side panel 02, and can be engaged with or disengaged from the lock buckle 11. When the lock buckle 11 is engaged with the latch pin 21, the winglet 01 is fixed relative to the wing side panel 02, and the winglet 01 is in an unfolded state. When the lock buckle 11 is disengaged from the latch pin 21, the winglet 01 moves relative to the wing side panel 02, so that the winglet 01 is switched to a folded state.

[0078] In the specific setting: when the latch 21 is fixed, the lock buckle 11 is movably connected, and the lock buckle 11 is engaged or disengaged with the latch 21 during the movement. Alternatively, when the lock buckle 11 is fixed, the latch 21 is movably connected, and the latch 21 is engaged or disengaged with the lock buckle 11 during the movement. Regardless of which connection method is adopted, the lock buckle 11 in the hook assembly 10 cooperates with the latch 21 in the lock pin assembly 20 to achieve locking or unlocking of the winglet 01 and the wing.

[0079] In this embodiment, the lock pin assembly 20 is arranged on the wing side panel 02 in the wing. When the inner side wall of the winglet 01 is in contact with the wing side panel 02, the winglet 01 is in an unfolded state; when the inner side wall of the winglet 01 is in contact with the upper surface of the main wing, the winglet 01 is in a folded state. It is understandable that in other optional embodiments, the lock pin assembly 20 can also be arranged in other parts of the wing, and can be adjusted according to actual needs, not limited to the wing side panel 02. As long as the mutually hinged winglet 01 and the wing can be relatively fixed or relatively moved through the locking structure, so that the winglet 01 can be in an unfolded state, or switch from an unfolded state to a folded state.

[0080] The hook assembly 10 is arranged on the winglet 01, and the lock pin assembly 20 is arranged on the wing side panel 02. The latch pin 21 is fixedly connected to the wing side panel 02, and the lock buckle 11 is movably connected to the winglet 01. The specific structure of the locking structure in this embodiment is described in detail below.

[0081] Please continue to refer to Figures 6 to 13 As shown, the hook assembly 10 further includes a torsion spring 12 and a shaft pin 13 .

[0082] The lock buckle 11 includes a snap-on portion 112 and a reset portion 113. The snap-on portion 112 is snap-fitted with the bayonet pin 21. The reset portion 113 is provided with a mounting groove 114 and a rotation center hole 115. The rotation center hole 115 is provided close to the snap-on portion 112 and passes through the mounting groove 114. The torsion spring 12 is installed in the mounting groove 114. The axle pin 13 is simultaneously passed through the rotation center hole 115 and the torsion spring 12 to connect the torsion spring 12 to the lock buckle 11.

[0083] Optionally, the lock buckle 11 is a slender rod-shaped structure, and includes a clamping portion 112 and a reset portion 113 along the length direction. The clamping portion 112 is located at the end of the lock buckle 11 and is used to clamp and cooperate with the bayonet 21, and the reset portion 113 is provided with a mounting groove 114 and a rotation center hole 115.

[0084] The mounting groove 114 is opened along the length direction, and the rotation center hole 115 is opened along the thickness direction and passes through the mounting groove 114. During assembly, the torsion spring 12 is installed in the mounting groove 114, and the shaft pin 13 is simultaneously passed through the rotation center hole 115 and the torsion spring 12, so that the torsion spring 12 is connected to the mounting groove 114 of the lock buckle 11, and the lock buckle 11 is fixed to the side of the winglet 01 close to the wing side panel 02.

[0085] When there is no external force, the engaging portion 112 can be maintained at the position engaged with the bayonet pin 21 under the action of the torsion spring 12, and the lock buckle 11 is in the initial position; when subjected to an external force, the engaging portion 112 can rotate around the shaft pin 13 to leave the position engaged with the bayonet pin 21, the lock buckle 11 leaves the initial position, and the torsion spring 12 generates a restoring force. When the external force disappears, the lock buckle 11 returns to the initial position driven by the restoring force of the torsion spring 12. Specifically, when there is no external force, the lock buckle 11 is in the initial position under the action of the torsion spring 12, and the initial position is the position where the engaging portion 112 of the lock buckle 11 can be engaged with the bayonet pin 21. When a force is applied to the lock buckle 11, the lock buckle 11 rotates around the shaft pin 13 under the action of the external force, leaving the initial position, and at the same time, the torsion spring 12 generates a restoring force. When the external force disappears, the lock buckle 11 returns to the initial position driven by the restoring force of the torsion spring 12. That is, the lock buckle 11 is kept in the initial position or has a tendency to return to the initial position under the action of the torsion spring 12. When the lock buckle 11 and the bayonet 21 are in a locked state, the lock buckle 11 can be disengaged from the bayonet 21 by controlling the lock buckle 11 to leave the initial position; when the lock buckle 11 and the bayonet 21 are in a disengaged state, the bayonet 21 can be moved to the locked position by controlling the lock buckle 11 to leave the initial position. At this time, the lock buckle 11 returns to the initial position under the action of the restoring force, so that the lock buckle 11 and the bayonet 21 can be locked.

[0086] The torsion spring 12 is installed in the installation groove 114 of the lock buckle 11, not only to enable the lock buckle 11 to automatically rebound to the initial position, but more importantly to be able to continuously output torque so that the lock buckle 11 can remain in the initial position, so that the lock buckle 11 can continue to be forcefully engaged with the pin 21, ensuring the stability of the engagement and avoiding loosening.

[0087] Optionally, try to select a torsion spring 12 with a larger torsional force to avoid loosening. Relatively speaking, the force required for unlocking is also larger.

[0088] Furthermore, the hook assembly 10 also includes a fixing member 14 fixedly connected to the winglet 01. The fixing member 14 can enclose an activity space 17 with the winglet 01, the lock buckle 11 is installed on the fixing member 14, and is configured to be able to swing in the activity space 17, and both ends of the shaft pin 13 are fixed on the fixing member 14 (that is, the shaft pin 13 is simultaneously passed through the fixing member 14, the lock buckle 11 and the torsion spring 12). After assembly, the reset portion 113 abuts against the fixing member 14, one end of the torsion spring 12 abuts against the bottom of the installation groove 114, and the other end abuts against the fixing member 14.

[0089] Specifically, the fixing member 14 can be fixedly connected to the winglet 01 and enclose an activity space 17 with the inner wall of the winglet 01. The lock buckle 11 is mounted on the fixing member 14 and is configured to swing in the activity space 17, and the activity space 17 limits the swing range of the lock buckle 11.

[0090] Furthermore, the fixing member 14 includes a first abutting wall 162 and a second abutting wall 165. The reset portion 113 abuts against the first abutting wall 162, and the other end of the torsion spring 12 abuts against the second abutting wall 165. During installation, one end of the torsion spring 12 abuts against the bottom of the installation groove 114, and the other end abuts against the second abutting wall 165.

[0091] Furthermore, the fixing member 14 includes a first fixing body 15 and a second fixing body 16 that are interlocked. The first abutting wall 162 and the second abutting wall 165 are located on the same side of the second fixing body 16. The first fixing body 15 is used to be connected to the side of the winglet 01 away from the lock buckle 11, and the second fixing body 16 is used to be connected to the side of the winglet 01 close to the lock buckle 11, and the second fixing body 16, the first fixing body 15 and the winglet 01 can enclose the above-mentioned activity space 17. Specifically, the first fixing body 15 is connected to the outer side wall of the winglet 01, and the second fixing body 16 is connected to the inner side wall of the winglet 01. The axle pin 13 passes through the second fixing body 16, the lock buckle 11, the torsion spring 12 in sequence and is connected to the first fixing body 15.

[0092] Please refer to Fig.12 and Fig.13 As shown, the fixing member 14 also includes a fixing screw. The first fixing body 15 is provided with a first threaded hole 152 and a second threaded hole 155, and the second fixing body 16 is provided with a first through hole 166 corresponding to the first threaded hole 152, and a second through hole 167 corresponding to the second threaded hole 155. The fixing screw passes through the first through hole 166 and is threadedly connected to the first threaded hole 152, and the shaft pin 13 passes through the second through hole 167, the lock buckle 11, the torsion spring 12 in sequence and is threadedly connected to the second threaded hole 155.

[0093] Specifically, the first fixed body 15 is a plate-like structure, and a protrusion 151 is provided on one side of the first fixed body 15 close to the second fixed body 16. The protrusion 151 is roughly an I-shaped structure, and a first threaded hole 152 and a second threaded hole 155 that pass through the first fixed body 15 are provided on the protrusion 151. The first threaded hole 152 is used to connect with the second fixed body 16, and the second threaded hole 155 is used to connect with the shaft pin 13. Corresponding to the first fixed body 15, the second fixed body 16 is provided with a first through hole 166 and a second through hole 167. The first through hole 166 corresponds to the first threaded hole 152, and the second through hole 167 corresponds to the second threaded hole 155.

[0094] The second fixed body 16 also includes a fixed body 161, and the first abutting wall 162 and the second abutting wall 165 are located on the same side of the fixed body 161. Specifically, the first abutting wall 162 and the second abutting wall 165 are located on the side of the fixed body 161 close to the lock buckle 11. The first abutting wall 162 and the second abutting wall 165 are arranged opposite to each other and are respectively located at the edge of the fixed body 161, so as to reserve enough activity space 17 for the swing of the lock buckle 11. Among them, the first abutting wall 162 and the second abutting wall 165 are both provided with a first through hole 166, and the first through hole 166 is opened through the fixed body 161, and the extension direction of the first through hole 166 is the thickness direction of the second fixed body 16.

[0095] According to the principle of reducing weight as much as possible while meeting strength requirements, the wall thickness of the first abutting wall 162 and the second abutting wall 165 where the first through hole 166 is formed is greater than the wall thickness of other positions to ensure the strength of the fixing screw after passing through the first through hole 166 and connecting with the first threaded hole 152.

[0096] In this embodiment, two first through holes 166 are formed on the first abutting wall 162 and the second abutting wall 165, and the two first through holes 166 on the first abutting wall 162 are respectively located at two ends of the length direction of the first abutting wall 162, and the two first through holes 166 on the second abutting wall 165 are respectively located at two ends of the length direction of the second abutting wall 165. The second through hole 167 is formed at the center of the fixed body 161.

[0097] Optionally, the hook assembly 10 further includes a lever 18. The lever 18 is disposed at an end of the reset portion 113 away from the clamping portion 112.

[0098] Specifically, a mounting hole 117 is provided at one end of the lock buckle 11 away from the clamping portion 112, the mounting hole 117 is a threaded hole, the lever 18 includes a threaded section, and the lever 18 is threadedly connected to the mounting hole 117. It is understandable that in other optional embodiments, the connection between the lever 18 and the reset portion 113 can also be integrally formed or adopt other connection methods, which is not limited in this embodiment.

[0099] In order to ensure that the lever 18 can be firmly connected to the lock buckle 11, when the lever 18 is threadedly connected to the lock buckle 11, the mounting hole 117 provided on the lock buckle 11 is spaced apart from the mounting groove 114. The lever 18 is connected to the lock buckle 11 through the mounting hole 117, and the lever 18 is located outside the mounting groove 114 (i.e., the side of the mounting groove 114 away from the clamping portion 112), thereby ensuring that the lever 18 has a sufficient thread locking length.

[0100] Please refer to Figures 7 to 11 As shown, further, the engaging portion 112 is provided with an engaging notch 1125 engaged with the engaging pin 21 , that is, the engaging notch 1125 is used for engaging with the engaging pin 21 , and the opening direction of the engaging notch 1125 is the same as the opening direction of the mounting groove 114 .

[0101] Firstly, when the lock buckle 11 and the bayonet pin 21 are engaged, it is necessary to ensure that the engaging portion 112 can be normally engaged with the engaging groove of the bayonet pin 21. In addition, in order to ensure the firmness of the engagement, it is necessary to ensure that when the drone is running and under certain vibrations or sliding conditions, the engaging portion 112 of the lock buckle 11 can be securely engaged with the engaging groove of the bayonet pin 21, and the lock buckle 11 is not easy to fall off from the end of the bayonet pin 21.

[0102] Since the lock buckle 11 rotates around the axle pin 13, in this embodiment, the locking notch 1125 is designed to be an arc groove with the rotating center hole 115 as the rotation center. Under optional circumstances, the groove depth of the arc groove can be appropriately extended, that is, the groove depth of the arc groove is greater than the groove width, thereby improving the reliability of the locking connection and preventing the lock buckle 11 and the locking pin 21 from disengaging when the drone vibrates or shakes, thereby causing the winglet 01 to separate from the wing side panel 02, and then causing the winglet 01 to be released from the locked state and be in an active state.

[0103] Furthermore, since the rotation center hole 115 is formed through the installation groove 114 and the shaft pin 13 is passed through the rotation center hole 115, under the action of external force, the lock buckle 11 rotates around the shaft pin 13, that is, around the central axis of the rotation center hole 115. The lever 18 and the clamping portion 112 are respectively located at both ends of the rotation center hole 115, and the lever 18 can be used to conveniently apply the force.

[0104] In order to better move the lever 18, according to the lever principle, the distance between the lever 18 and the rotation center hole 115 is greater than the distance between the arc groove of the clamping portion 112 and the rotation center hole 115, so as to increase the torque. Therefore, the lever 18 can be better moved to control the lock buckle 11 to leave the initial position, so as to achieve the separation and clamping of the lock buckle 11 and the bayonet 21, thereby achieving the purpose of converting the winglet 01 from the unfolded state to the folded state, or from the folded state to the unfolded state.

[0105] Optionally, the thickness of the clamping portion 112 is smaller than the thickness of the resetting portion 113 .

[0106] In this embodiment, the reset portion 113 includes a first end and a second end opposite to each other, the first end is closer to the clamping portion 112 relative to the second end, and the thickness of the first end is greater than the thickness of the second end. Correspondingly, the mounting groove 114 includes a proximal end and a distal end opposite to each other, the proximal end is closer to the clamping portion 112, and the distal end is farther away from the clamping portion 112. The thickness of the side wall of the proximal end is greater than the thickness of the side wall of the distal end.

[0107] Since the reset portion 113 is provided with a mounting groove 114, the mounting groove 114 is used to mount the torsion spring 12, and based on the principle of reducing weight as much as possible while meeting the strength requirements, the thickness of the clamping portion 112 is smaller than the thickness of the reset portion 113. At the same time, since the rotating portion of the torsion spring 12 is located at the proximal end of the mounting groove 114, in order to meet the installation requirements of the torsion spring 12, the thickness of the proximal end of the reset portion 113 is greater than the thickness of the distal end.

[0108] In one embodiment, the assembly method of the hook assembly 10 is as follows:

[0109] First, the first fixing body 15 is fixedly mounted on the outer side wall of the winglet 01. Optionally, the first fixing body 15 can be bonded to the outer side wall of the winglet 01 by epoxy glue, but the present application is not limited thereto, and the first fixing body 15 can also be bonded or fixed to the outer side wall of the winglet 01 by other means.

[0110] Second, install the torsion spring 12 into the installation groove 114 of the lock buckle 11 , and align the central circular hole of the torsion spring 12 with the rotation center hole 115 of the lock buckle 11 .

[0111] Third, the lock buckle 11 with the torsion spring 12 installed is installed between the first abutting wall 162 and the second abutting wall 165 of the second fixing body 16 , and the rotation center hole 115 is aligned with the second through hole 167 .

[0112] Fourth, the shaft pin 13 is sequentially passed through the second through hole 167 of the second fixing body 16 , the rotation center hole 115 of the lock buckle 11 , and the center circular hole of the torsion spring 12 to form an assembly component.

[0113] Fifth, fix the assembly component to the first fixed body 15. Specifically, the assembly component is initially fixed by threading the shaft pin 13 with the second threaded hole 155 of the first fixed body 15, and the fixing screws are passed through the first through holes 166 on the second fixed body 16 and threadedly connected with the first threaded holes 152 of the first fixed body 15, so that the assembly component is firmly installed on the first fixed body 15. At this time, the first through holes 166 of the second fixed body 16 correspond to the first threaded holes 152 of the first fixed body 15. At the same time, the shaft pin 13 is locked and fixed with the second threaded hole 155 of the first fixed body 15.

[0114] Sixth, install the lever 18 on the lock buckle 11. Optionally, the lever 18 is installed on the lock buckle 11 by threaded connection, but the present application is not limited to this, and the lever 18 can also be connected to the lock buckle 11 in other ways. When the lever 18 and the lock buckle 11 are integrally formed, this step can be omitted.

[0115] It is worth noting that: after the first fixed body 15 is fixedly installed on the outer wall of the winglet 01, and the installation assembly consisting of the axle pin 13, the lock buckle 11, the torsion spring 12, and the second fixed body 16 is fixed to the first fixed body 15, an activity space 17 is formed between the first fixed body 15, the second fixed body 16 and the winglet 01, and the lock buckle 11 and the torsion spring 12 are installed in the activity space 17 through the axle pin 13. At this time, it is necessary to ensure that the lock buckle 11 can be smoothly moved and can rebound to the initial position normally. Here, the ability of the lock buckle 11 to be smoothly moved is not only related to the torque of the torsion spring 12, but also related to the activity space 17 formed between the first fixed body 15, the second fixed body 16 and the winglet 01, so as to prevent the first fixed body 15 and the second fixed body 16 from clamping the lock buckle 11.

[0116] It is understandable that, in addition to achieving the swinging motion through the fixing member 14, in other optional embodiments, a stop wall (not shown in the figure) may be protruded on the inner wall of the winglet 01 to limit the swinging range of the lock buckle 11.

[0117] Specifically, a first retaining wall and a second retaining wall are provided opposite to each other on one side of the winglet 01 close to the wing side panel 02, and a swinging space is formed between the first retaining wall and the second retaining wall.

[0118] The lock buckle 11 and the torsion spring 12 are fixed to the winglet 01 through the axle pin 13. The lock buckle 11 can abut against the first retaining wall. One end of the torsion spring 12 abuts against the bottom of the installation groove 114, and the other end abuts against the second retaining wall, so that the lock buckle 11 can be swingably set in the swing back space, and the purpose of engaging (i.e. locking) or disengaging (i.e. unlocking) with the bayonet 21 is achieved.

[0119] In the above embodiment, the lock 11 in the hook assembly 10 optionally adopts a torsion spring 12 rebound structure and a reverse opening method to ensure that the winglet 01 and the wing side panel 02 are firmly locked when the lock 11 is not actively opened. It can be understood that the reverse opening here means that after the hook assembly 10 is assembled, the opening of the card gap 1125 faces the direction of the UAV's flight, that is, the direction in which the lock 11 opens is the direction in which the UAV flies, so as to avoid the UAV pushing the lever 18 to open the lock 11 due to wind resistance, resulting in the unlocking of the winglet 01 and the wing side panel 02.

[0120] Please continue to refer to Fig.14 and Fig.15 As shown, the bayonet 21 includes a fixedly connected connecting portion 22 and a clamping portion 23. The connecting portion 22 is used to be fixed on the wing, the clamping portion 23 can be located between the winglet 01 and the wing, and the lock buckle 11 can be clamped or disengaged from the clamping portion 23.

[0121] In this embodiment, the connecting portion 22 is fixedly connected to the wing side panel 02 of the wing, and the snap-fitting portion 23 protrudes from the wing side panel 02 and is located between the winglet 01 and the wing side panel 02, so that the snap-fitting portion 112 of the lock buckle 11 can be snap-fitted or disengaged with the snap-fitting portion 23, thereby enabling the lock buckle 11 to be snap-fitted or disengaged with the snap-fitting portion 23.

[0122] Optionally, the connecting portion 22 is provided with an external thread, and the connecting portion 22 is fixedly connected to the wing side panel 02 by means of the external thread.

[0123] Optionally, the engaging portion 23 is clearance-matched with the engaging notch 1125 provided in the engaging portion 112. Through the clearance-matching between the engaging portion 23 and the engaging notch 1125 and the processing accuracy, the engaging portion 112 can be smoothly engaged with or disengaged from the engaging portion 23, thereby enabling the lock buckle 11 to be smoothly engaged with or disengaged from the latch 21.

[0124] Please continue to refer to Fig.16 As shown, specifically, the engaging portion 23 includes a first shaft segment 231, a second shaft segment 232 and a third shaft segment 233 which are connected in sequence. The diameter of the second shaft segment 232 is smaller than the diameter of the first shaft segment 231 and the third shaft segment 233, so that a clamping groove is formed between the first shaft segment 231 and the third shaft segment 233, and the lock buckle 11 can be clamped in the clamping groove (that is, the clamping portion 112 of the lock buckle 11 can be clamped in the clamping groove).

[0125] Furthermore, the locking pin assembly 20 further includes a locking member 25, which is used to be fixedly connected to the wing, and the locking member 25 can be located on the side of the wing away from the engaging portion 23. The locking member 25 is provided with a threaded hole that cooperates with the connecting portion 22, and the connecting portion 22 can pass through the wing and be threadedly connected to the threaded hole.

[0126] Specifically, the locking member 25 is fixedly connected to the side of the wing side panel 02 away from the engaging portion 23, and the connecting portion 22 can pass through the wing side panel 02 and be threadedly connected to the threaded hole, thereby achieving the fixation of the bayonet 21. Furthermore, a through hole (i.e., a light hole) is provided on the wing side panel 02 for the connecting portion 22 to pass through, and the connecting portion 22 passes through the through hole and is connected to the threaded hole on the locking member 25, thereby achieving the fixation of the bayonet 21 and solving the problem that the material of the wing side panel 02 is usually a carbon plate, and it is not easy to process threaded holes on the carbon plate, and the processing cost is high.

[0127] In an optional embodiment, the locking member 25 is roughly in an inverted L shape, and a first fixing threaded hole 251 matching the hinge 05 is provided at both ends of the locking member 25; a convex portion is provided at the middle position of the locking member 25 to make the middle position of the locking member 25 wider, and a second fixing threaded hole 253 that can be fixedly connected to the wing side panel 02 and a third fixing threaded hole 255 that is fixedly connected to the bayonet 21 are provided at the middle position. The number of the second fixing threaded holes 253 is at least two, and the second fixing threaded holes 253 are located in the circumference (i.e., around) of the third fixing threaded hole 255. In this embodiment, the number of the second fixing threaded holes 253 is three.

[0128] Matchingly, the wing side panel 02 is provided with a first through hole 021, a second through hole 023 and a third through hole 025. The first through hole 021 corresponds to the first fixing threaded hole 251, the second through hole 023 corresponds to the second fixing threaded hole 253, and the third through hole 025 corresponds to the third fixing threaded hole 255.

[0129] During assembly, the first screw passes through the second through hole 023 and is threadedly connected to the second fixed threaded hole 253, thereby installing the locking member 25 on the wing side panel 02. The connecting portion 22 of the bayonet 21 passes through the third through hole 025 and is threadedly connected to the third fixed threaded hole 255, thereby fixing the bayonet 21 on the wing side panel 02. The second screw passes through the hinge 05 and the first through hole 021 in sequence and is threadedly connected to the first fixed threaded hole 251, thereby fixing the hinge 05 on the wing side panel 02. In this embodiment, the specific structure of the locking member 25 can be appropriately adjusted according to actual needs, and the locking member 25 needs to avoid the wing ribs fixedly connected to the wing side panel 02. It can be understood that in other optional embodiments, the specific structure of the locking member 25 can be determined according to the structural features of the back of the wing side panel 02, and is not limited to the specific structure in this embodiment.

[0130] Specifically, the position of the latch 21 is determined according to the structural features of the side of the wing side panel 02 close to the locking member 25, and then the positions of other components are determined according to the position of the latch 21. The lever 18 on the lock buckle 11 has a motion trajectory under the action of external force. When determining the setting position of the latch 21, it should be ensured that the motion trajectory of the lever 18 does not interfere with the lower edge of the wing side panel 02, which is conducive to convenient operation. In this embodiment, the latch 21 is located at the lower edge of the wing side panel 02.

[0131] When the winglet 01 is transformed from the folded state to the unfolded state, if the lock buckle 11 is in the initial position, during the rotation of the winglet 01, the end of the latch 21 on the wing side panel 02 will abut against the lock buckle 11 on the winglet 01, and the latch 21 and the lock buckle 11 will interfere with each other, resulting in the winglet 01 being unable to smoothly fit with the wing side panel 02. At this time, it is necessary to apply an external force to the lock buckle 11 through the lever 18 to make the lock buckle 11 rotate in the opening direction, so as to control the lock buckle 11 to leave the initial position and avoid interference with the latch 21, so as to make the inner side wall of the winglet 01 fit with the wing side panel 02 and avoid interference between the latch 21 and the lock buckle 11. Then, the external force acting on the lever 18 is canceled, and the lock buckle 11 returns to the initial position under the action of the torsion spring 12, so that the lock buckle 11 can be automatically locked in the locking groove position of the latch 21.

[0132] It can be understood that the locking structure provided in the embodiment of the present application can not only be applied to the locking connection between the winglet 01 and the wing, but the related structures of the hook assembly 10 and the locking pin assembly 20 can also be applied to the locking connection between the UAV wing, winglet 01 and other related structures and the main structure, or the locking connection of opening and closing components such as hatches, etc. The specific application is not limited and depends on actual needs. The locking structure provided in the embodiment of the present application is reasonably designed and ingeniously structured. The locking pin assembly 20 and the hook assembly 10 are respectively arranged on the winglet 01 and the wing side panel 02, and are engaged or disengaged through the lock buckle 11 and the latch 21, and with the assistance of the hinge 05 hinged between the winglet 01 and the wing, the difficulty of locking the winglet 01 and the wing is greatly reduced on the basis of ensuring the fixing strength. The operation time of the winglet 01 relative to the wing is shortened, and the maneuverability of the whole machine assembly is improved. The tool-free unfolding and folding of the winglet 01 is thereby achieved, which is beneficial for the rapid unfolding and folding of the winglet 01 in the field. The locking pin assembly 20 and the hook assembly 10 are not easy to fall off from the winglet 01 and the wing side panel 02, thereby avoiding the situation in which the UAV cannot be assembled or cannot operate normally due to the falling of components. The safety of the UAV flight is improved while ensuring the rapid unfolding and folding of the winglet 01 in the field.

[0133] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A locking structure for locking a first component and a second component that are hinged to each other in a drone, characterized in that: It comprises a hook assembly (10) and a lock pin assembly (20), wherein the hook assembly (10) comprises a lock buckle (11), and the lock pin assembly (20) comprises a latch pin (21); The hook assembly (10) is used to be installed on the first component, the lock buckle (11) can be located on a side of the first component close to the second component, the lock pin assembly (20) is used to be installed on the second component, a part of the bayonet (21) can be located between the first component and the second component, and the lock buckle (11) is configured to be able to engage with or disengage from the bayonet (21); When the lock buckle (11) is engaged with the bayonet pin (21), the first component can be fixed relative to the second component; when the lock buckle (11) is disengaged from the bayonet pin (21), the first component can move relative to the second component; The lock buckle (11) is configured to be able to remain in an initial position engaged with the bayonet pin (21) when no external force is applied, and to be able to rotate around its center to leave the initial position when an external force is applied, and to return to the initial position after the external force is eliminated; The hook assembly (10) further comprises a torsion spring (12) and an axle pin (13); The lock buckle (11) comprises a clamping portion (112) and a reset portion (113), wherein the clamping portion (112) is clamped with the bayonet pin (21), and the reset portion (113) is provided with a mounting groove (114) and a rotation center hole (115), wherein the rotation center hole (115) is provided close to the clamping portion (112) and passes through the mounting groove (114), and the torsion spring (12) is installed in the mounting groove (114), and the shaft pin (13) is simultaneously provided in the rotation center hole (115) and the torsion spring (12), so as to connect the torsion spring (12) with the lock buckle (11); When no external force is applied, the engaging portion (112) can be maintained at a position engaged with the bayonet pin (21) under the action of the torsion spring (12), and the lock buckle (11) is located at the initial position; when an external force is applied, the engaging portion (112) can rotate around the shaft pin (13) to leave the position engaged with the bayonet pin (21), the lock buckle (11) leaves the initial position, and the torsion spring (12) generates a restoring force; when the external force disappears, the lock buckle (11) is driven by the restoring force of the torsion spring (12) to return to the initial position.

2. The locking structure according to claim 1, characterized in that: The hook assembly (10) further comprises a fixing member (14) capable of being fixedly connected to the first component, the fixing member (14) and the first component can enclose a movable space (17), the lock buckle (11) is mounted on the fixing member (14) and is configured to be able to swing within the movable space (17), and both ends of the shaft pin (13) are fixed to the fixing member (14); The reset portion (113) is pressed against the fixing member (14); one end of the torsion spring (12) is pressed against the bottom of the installation groove (114), and the other end is pressed against the fixing member (14).

3. The locking structure according to claim 2, characterized in that: The fixing member (14) comprises a first abutting wall (162) and a second abutting wall (165) which are opposite to each other, the reset portion (113) abuts against the first abutting wall (162), and the other end of the torsion spring (12) abuts against the second abutting wall (165).

4. The locking structure according to claim 3, characterized in that: The fixing member (14) comprises a first fixing body (15) and a second fixing body (16) which are interlocked, and the first abutting wall (162) and the second abutting wall (165) are located on the same side of the second fixing body (16); The first fixing body (15) is used to be connected to a side of the first component facing away from the lock buckle (11), and the second fixing body (16) is used to be connected to a side of the first component close to the lock buckle (11), and the second fixing body (16), the first fixing body (15) and the first component can enclose the activity space (17); The shaft pin (13) passes through the second fixing body (16), the lock buckle (11), the torsion spring (12) in sequence and is connected to the first fixing body (15).

5. The locking structure according to claim 4, characterized in that: The fixing member (14) further comprises a fixing screw; The first fixing body (15) is provided with a first threaded hole (152) and a second threaded hole (155); the second fixing body (16) is provided with a first through hole (166) corresponding to the first threaded hole (152), and a second through hole (167) corresponding to the second threaded hole (155); The fixing screw passes through the first through hole (166) and is threadedly connected to the first threaded hole (152), and the shaft pin (13) passes through the second through hole (167), the lock buckle (11), the torsion spring (12) in sequence and is threadedly connected to the second threaded hole (155).

6. The locking structure according to claim 1, characterized in that: The hook assembly (10) further comprises a shifting post (18), wherein the shifting post (18) is arranged at an end of the reset portion (113) away from the clamping portion (112).

7. The locking structure according to claim 1, characterized in that: The locking portion (112) is provided with a locking notch (1125) that is locked with the locking pin (21), and the opening direction of the locking notch (1125) is the same as the opening direction of the installation groove (114).

8. The locking structure according to claim 7, characterized in that: The clamping notch (1125) is a circular arc groove with the rotating center hole (115) as the rotation center, and the groove depth of the circular arc groove is greater than the groove width of the circular arc groove.

9. The locking structure according to claim 8, characterized in that: A shifting post (18) is provided at one end of the resetting portion (113) away from the clamping portion (112); The distance between the shifting post (18) and the rotation center hole (115) is greater than the distance between the circular arc groove and the rotation center hole (115).

10. The locking structure according to claim 1, characterized in that: The thickness of the clamping portion (112) is smaller than the thickness of the resetting portion (113).

11. The locking structure according to claim 1, characterized in that: The reset portion (113) comprises a first end and a second end opposite to each other, the first end being closer to the clamping portion (112) relative to the second end, and the thickness of the first end being greater than the thickness of the second end.

12. The locking structure according to claim 1, characterized in that: The mounting groove (114) comprises a proximal end close to the clamping portion (112) and a distal end far away from the clamping portion (112), and the side wall thickness of the proximal end is greater than the side wall thickness of the distal end.

13. The locking structure according to claim 1, characterized in that: A first retaining wall and a second retaining wall are convexly provided on one side of the first component close to the lock buckle (11), and a swinging space is formed between the first retaining wall and the second retaining wall; The lock buckle (11) can be swingably arranged in the swing-back space, the lock buckle (11) can abut against the first retaining wall, one end of the torsion spring (12) abuts against the bottom of the installation groove (114), and the other end can abut against the second retaining wall.

14. The locking structure according to claim 1, characterized in that: The bayonet (21) comprises a connecting portion (22) and a locking portion (23) which are fixedly connected, the connecting portion (22) being used to be fixed to the second component, the locking portion (23) being able to be located between the first component and the second component, and the lock buckle (11) being able to be engaged with or disengaged from the locking portion (23).

15. The locking structure according to claim 14, characterized in that: The lock buckle (11) comprises a clamping portion (112) having a clamping notch (1125), and the clamping portion (23) is clearance-matched with the clamping notch (1125), so that the clamping portion (112) can be clamped or disengaged from the clamping portion (23).

16. The locking structure according to claim 14, characterized in that: The engaging portion (23) comprises a first shaft segment (231), a second shaft segment (232) and a third shaft segment (233) which are connected in sequence, and the diameter of the second shaft segment (232) is smaller than the diameters of the first shaft segment (231) and the third shaft segment (233), so that a engaging groove is formed between the first shaft segment (231) and the third shaft segment (233), and the lock buckle (11) can be engaged in the engaging groove.

17. The locking structure according to claim 14, characterized in that: The locking pin assembly (20) further comprises a locking member (25), wherein the locking member (25) is used for being fixedly connected to the second component, and the locking member (25) can be located on a side of the second component away from the engaging portion (23); The locking member (25) is provided with a threaded hole that matches the connecting portion (22), and the connecting portion (22) can pass through the second component and be threadedly connected to the threaded hole.

18. A drone, characterized in that: It includes the locking structure described in any one of claims 1-17.

19. The drone according to claim 18, characterized in that: It also includes a winglet (01) and a wing that are hinged to each other, the winglet (01) being one of the first component and the second component, and the wing being the other one.

20. The drone according to claim 19, characterized in that: The hook assembly (10) is arranged on the winglet (01), and the lock pin assembly (20) is arranged on the wing; When the lock buckle (11) is engaged with the bayonet pin (21), the winglet (01) is fixed relative to the wing and is in an unfolded state; when the lock buckle (11) is disengaged from the bayonet pin (21), the winglet (01) moves relative to the wing to switch to a folded state.

21. The drone according to claim 19, characterized in that: The wing comprises a wing side panel (02), the winglet (01) and the wing side panel (02) are hinged via a hinge (05), and the hinge (05) comprises a first leaf (051), a second leaf (052) and a supporting torsion spring (055); The first page (051) is fixedly connected to the winglet (01), the second page (052) is fixedly connected to the wing side panel (02), one end of the supporting torsion spring (055) is abutted against the first page (051), and the other end is abutted against the second page (052), so that the winglet (01) and the wing have a tendency to fold.

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