Automatic folding and unfolding device for unmanned aerial vehicle

Abstract

The invention relates to an automatic folding and unfolding device for an unmanned aerial vehicle. The automatic folding and unfolding device comprises a case, a bottom plate, a translation driving mechanism, a supporting mechanism and an unlocking mechanism, the bottom plate is slidably arranged in the box body; the translation driving mechanism is arranged in the box body; the supporting mechanism is arranged on the bottom plate and comprises supporting blocks, a clamping frame and a clamping plate, the supporting blocks and the clamping frame are arranged at intervals, the clamping plate is elastically connected with the clamping frame, a clamping groove used for fixing a pair of arms of the unmanned aerial vehicle is formed between the clamping plate and the clamping frame, and the other pair of arms are naturally placed on the supporting blocks arranged at intervals; the unlocking mechanism is arranged on the bottom plate and comprises a pull rope and a driving assembly used for driving the pull rope to move, one end of the pull rope is connected to the driving assembly, the other end of the pull rope is connected to the clamping plate, and when the pull rope moves, the clamping plate can be driven to move so that the clamping groove can be expanded or shrunk to adapt to four-rotor unmanned aerial vehicles of various specifications with different arms. Through the integrated design, the device can achieve automatic folding and unfolding of the unmanned aerial vehicle, manual intervention is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and in particular to an automatic retractable device for unmanned aerial vehicles. Background Art

[0002] Nowadays, with the booming development of drones, more and more intelligent drones are being born. Drones are widely used in both civil and military fields. Civil applications are mainly in the police, urban management, agriculture, geology, meteorology, electricity, disaster relief, video shooting and other industries, while military applications are mainly in battlefield reconnaissance and surveillance, border patrols, nuclear radiation detection, aerial photography, aerial prospecting, disaster monitoring, traffic patrols, public security monitoring and other aspects. The extensive use of drones has made drones occupy an important position in our lives, but nowadays a large number of drones are generally placed in packaging boxes during use, and are mainly taken out and placed manually.

[0003] Among them, drones are also often placed in various robots. For post-disaster reconstruction robots, the terrain they work on is complex and the robots' movements are bumpy, so drones need to be fixed more firmly to prevent them from shaking and becoming ineffective. To release the drones, they need to be unfixed to avoid affecting their takeoff. Currently, most drones in robots are manually placed and fixed, which is inconvenient to use. Summary of the invention

[0004] In view of this, the present invention provides an automatic retractable drone device which has stable placement and can realize automatic recovery and release.

[0005] The purpose of the present invention is achieved through the following technical solutions: A device for automatically retracting and releasing a drone, comprising: a chassis, a bottom plate, a translation drive mechanism, a support mechanism and an unlocking mechanism; the chassis comprises a box body and a box door elastically hinged to the box body; the bottom plate is slidably arranged in the box body; the translation drive mechanism is arranged in the box body, and is used to drive the bottom plate to slide out or slide in from the box door; the support mechanism is arranged on the bottom plate, and is used to accommodate the drone, comprising support blocks and a clamping frame arranged at intervals, and a clamping plate movably arranged on the clamping frame, the clamping plate is elastically connected to the clamping frame, and a clamping groove for fixing the drone is formed between the clamping frame and the clamping frame; the unlocking mechanism is arranged on the bottom plate, and comprises a pull rope, and a driving component for driving the pull rope to move, one end of the pull rope is connected to the driving component, and the other end is connected to the clamping plate, and the pull rope can drive the movement of the clamping plate when moving, so as to expand or shrink the clamping groove to adapt to various specifications of four-rotor drones with different machine arms.

[0006] The above technical solution is mainly used to store quad-rotor drones. When the quad-rotor drone is not needed, it is parked inside the box. A pair of arms are clamped and fixed by a clamping frame and a clamping plate, and the other pair of arms are supported by a support block, so that the drone can remain stable in the box. The box door closes the opening of the box under the action of elastic force, so that the storage of the drone has a relatively closed environment and can avoid being affected by the external environment. When the drone needs to be released, the translation drive mechanism drives the bottom plate to slide horizontally from the box door to extend outside the box, giving the drone an open space, and then the drive component drives the pull rope to move to expand the clamping groove, that is, the clamping plate releases the clamping fixation of the drone, so that the drone can take off smoothly without constraints. When the drone needs to be recovered, the drone stops at the preset position on the bottom plate, the drive component releases the pull rope, so that the clamping plate re-clamps the drone arm under the action of elastic force, and then the translation drive mechanism drives the bottom plate to slide from the box door into the box to complete the recovery of the drone. Among them, the clamping groove can be adaptively adjusted according to different drone arms to adapt to quad-rotor drones of various specifications with different arms.

[0007] The present invention integrates a translation drive mechanism, a support mechanism and an unlocking mechanism, so that the device can realize automatic retraction and deployment of the UAV, reduce manual intervention, and improve operating efficiency. It is particularly suitable for scenarios that require rapid response, such as emergency rescue, environmental monitoring or military reconnaissance.

[0008] Optionally, in a possible implementation, the driving assembly includes a first rotating driving member arranged on the base plate, a turntable arranged at the output end of the rotating driving member, and two guide units, two groups of the guide units are respectively arranged on the base plate and the clamping frame, one end of the pull rope is connected to the turntable, and the other end is connected to the clamping plate after passing through the two guide units.

[0009] In the above technical solution, the first rotating driving member drives the rotation of the turntable to move the pull rope connected to the turntable, and since the total length of the pull rope remains unchanged, the end of the pull rope connected to the clamping plate will move synchronously to drive the movement of the clamping plate, and the structure is simple and effective. Among them, the two guide units are respectively arranged on the bottom plate and the clamping frame, providing a stable guide path for the pull rope, avoiding the deviation or jamming of the pull rope during the movement, thereby enhancing the stability and reliability of the system.

[0010] Optionally, in a possible implementation, the guide unit includes a roller and a fixed seat, the fixed seat is provided on the base plate or the clamping frame, and both ends of the roller are rotatably mounted on the fixed seat through bearings.

[0011] In the above technical solution, the roller design in the guide unit rotates on the fixed seat through the bearing, which effectively reduces the friction between the pull rope and the guide structure during movement, thereby extending the service life of the pull rope and the guide unit. In addition, the rolling action of the roller makes the movement of the pull rope in the guide unit smoother and reduces the resistance caused by friction, thereby ensuring the stability and accuracy of the movement of the splint.

[0012] Optionally, in a possible implementation, a first ring hook is provided on the turntable, a second ring hook is provided on the clamping plate, and two ends of the pull rope are respectively fixed to the first ring hook and the second ring hook.

[0013] In the above technical solution, the first ring hook on the turntable and the second ring hook on the clamping plate are designed so that the two ends of the pull rope can be firmly fixed on the two hooks. This connection method is not only simple and reliable, but also can withstand a large pulling force, ensuring that the pull rope will not fall off or break during the clamping process, improving the safety and stability of the system, and also facilitating the installation and removal of the pull rope.

[0014] Optionally, in a possible implementation, two rollers are spaced apart on the clamping plate, the two rollers are rotatably mounted on opposite sides of the clamping plate via a connecting rod, and the two rollers are disposed on the clamping frame and can move relative to the clamping frame.

[0015] In the above technical solution, the design of the two rollers can effectively reduce the friction resistance between the splint and the clamping frame during movement. Compared with the sliding contact, the rolling contact between the rollers and the clamping frame can significantly reduce friction and wear, thereby extending the service life of the splint and the clamping frame. At the same time, it improves the smoothness and efficiency of the clamping action, and also helps to accurately control the movement trajectory of the splint.

[0016] Optionally, in a possible implementation, one side of the clamping plate facing the clamping groove is a concave surface, and the other side is provided with an elastic member, and two ends of the elastic member are respectively in contact with the clamping plate and the clamping frame.

[0017] In the above technical solution, the concave design can better fit the clamped part of the drone, thereby increasing the clamping force, so that the clamp can distribute the pressure more evenly during the clamping process, avoiding local damage to the clamped object. The elastic member provided on the other side of the clamp can apply a clamping force to the clamp, so that the clamp can stably clamp the drone arm.

[0018] Optionally, in a possible implementation, the translation drive mechanism includes a second rotation drive member disposed on the box body, a gear connected to an output end of the second rotation drive member, and a rack connected to the base plate, and the gear is meshingly connected to the rack.

[0019] In the above technical solution, the second rotating driving member drives the gear to rotate, and the gear is meshed with the rack on the base plate. Therefore, when the gear rotates, it can drive the rack to move, thereby driving the base plate to move. The meshing transmission ratio of the gear and the rack is fixed. Therefore, by precisely controlling the rotation speed and direction of the second rotating driving member, precise control of the translation distance and direction of the base plate can be achieved.

[0020] Optionally, in a possible implementation, a first guide rail is provided in the box body, a second guide rail matching the first guide rail is provided on the bottom plate, and the first guide rail is slidably clamped on the second guide rail.

[0021] In the above technical solution, the provision of the first guide rail and the second guide rail can ensure the stability and accuracy of the base plate during movement, provide a stable movement path for the base plate, and reduce errors caused by offset or shaking.

[0022] Optionally, in a possible implementation, a guide rail slide ring is provided between the first guide rail and the second guide rail, and a plurality of balls are rotatably clamped on the guide rail slide ring. The plurality of balls are arranged at intervals along the moving direction of the base plate, and the balls abut against the second guide rail.

[0023] In the above technical solution, the design of the guide rail slide ring and the ball can reduce the direct friction between the first guide rail and the second guide rail, and turn it into rolling friction between the ball and the guide rail. The resistance of rolling friction is much smaller than that of sliding friction, which can not only improve the smoothness of the sliding of the first guide rail, but also greatly reduce friction and wear, extend the service life of the guide rail and the ball, and reduce energy loss.

[0024] Optionally, in a possible implementation, there are two support mechanisms, the two support mechanisms are centrally symmetrically arranged relative to the unlocking mechanism, two pull ropes are arranged on the unlocking mechanism, and the two pull ropes are respectively connected to the two clamping plates.

[0025] In the above technical solution, the two supporting mechanisms are used together to support and clamp the drone arm, which can effectively improve the stability of the drone and avoid the imbalance or damage of the drone caused by excessive force on one side. At the same time, the design of two stretching rods enables one unlocking mechanism to simultaneously unlock the two supporting mechanisms, which makes the structure more compact and can effectively reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application 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 paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment.

[0028] Figure 2 This is a schematic diagram of a portion of the structure behind a hidden chassis in an embodiment.

[0029] Figure 3 It is a schematic structural diagram of a support mechanism and an unlocking mechanism in one embodiment.

[0030] Figure 4 A partial structural schematic diagram of a support mechanism and a drive assembly according to an embodiment.

[0031] Figure 5 for Figure 4 Exploded view of the structure shown.

[0032] Figure 6 for Figure 2 Enlarged view of part A in the middle.

[0033] Figure 7 An exploded view of the first guide rail and the second guide rail of an embodiment.

[0034] Figure 8 1 is a cross-sectional view of a first guide rail and a second guide rail according to an embodiment of the present invention.

[0035] Fig. 9 This is a schematic diagram of an installation method of an embodiment, an example of installation in a post-disaster reconstruction robot.

[0036] Figure markings: 1-chassis; 11-box body; 111-first guide rail; 12-box door; 121-torsion spring; 2-bottom plate; 21-second guide rail; 3-translation drive mechanism; 31-second rotation drive member; 32-gear; 33-rack; 4-support block; 5-clamping frame; 51-buffer pad; 6-clamping plate; 61-clamping groove; 62-second ring hook; 63-roller; 64-connecting rod; 7-unlocking mechanism; 71-pull rope; 72-drive assembly; 721-first rotation drive member; 722-turntable; 7221-first ring hook; 723-guide unit; 7231-roller; 7232-fixed seat; 7233-bearing; 8-elastic member; 9-guide rail slide ring; 91-ball. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] Please refer to Figure 1-Figure 3 The present embodiment provides an automatic retractable device for a drone, comprising: a chassis 1, a bottom plate 2, a translation drive mechanism 3, a support mechanism and an unlocking mechanism 7; the chassis 1 comprises a box body 11 and a box door 12 elastically hinged to the box body 11, wherein the box body 11 has a chamber inside and an opening communicating with the chamber is provided on the box body 11, the box door 12 is installed at the opening and hinged to the box body 11, and in addition, the box body 11 and the box door 12 are connected by a torsion spring 121; the bottom plate 2 is slidably arranged in the box body 11; the translation drive mechanism 3 is arranged in the box body 11, and is used to drive the bottom plate 2 to slide out of the box door 12 Or slide in; the supporting mechanism is arranged on the base plate 2, which is used to accommodate the UAV, including support blocks 4 and clamping frames 5 arranged at intervals, and a clamping plate 6 movably arranged on the clamping frame 5, the clamping plate 6 is elastically connected to the clamping frame 5, and a clamping groove 61 for fixing the UAV is formed between the clamping frame 5; the unlocking mechanism 7 is arranged on the base plate 2, including a pull rope 71, and a driving component 72 for driving the pull rope 71 to move, one end of the pull rope 71 is connected to the driving component 72, and the other end is connected to the clamping plate 6, and the pull rope 71 can drive the movement of the clamping plate 6 when moving, so as to expand or shrink the clamping groove 61.

[0040] It should be noted that the clamping frame 5 of this embodiment is an overall "U"-shaped structure, that is, it has a bottom plate 2 and two parallel side plates, and the clamping plate 6 is slidably clamped between the two side plates. The clamping plate 6 and one of the side plates serve as the area for clamping the drone, that is, the area where the clamping groove 61 is located. The clamping plate 6 is also elastically connected to the other side plate, which can provide elastic clamping force for clamping the drone. In addition, the parts of the clamping frame 5 and the clamping plate 6 that contact the drone are both provided with a buffer pad 51 to prevent the drone from being scratched and collided.

[0041] When the automatic drone retracting and releasing device of this embodiment is applied to a post-disaster reconstruction robot, the drone retracting and releasing device is connected to the post-disaster reconstruction robot through the box 11, such as Fig. 9As shown. Specifically, when the drone of this embodiment is not needed, it is parked inside the box 11, supported by the support block 4, and clamped and fixed by the clamping frame 5 and the clamping plate 6, so that the drone can remain stable in the box 11, and the box door 12 closes the opening of the box 11 under the action of elastic force, so that the storage of the drone has a relatively closed environment and can avoid being affected by the external environment. When the drone is to be released, the translation drive mechanism 3 drives the bottom plate 2 to slide out from the box door 12 to extend outside the box 11, giving the drone an open space, and then the drive component 72 drives the pull rope 71 to move so that the clamping groove 61 is expanded, that is, the clamping plate 6 releases the clamping fixation of the drone, so that the drone can take off smoothly. When the drone is recovered, the drone stops at the preset position on the bottom plate 2, the drive component 72 releases the pull rope 71, so that the clamping plate 6 re-clamps the drone under the action of elastic force, and then the translation drive mechanism 3 drives the bottom plate 2 to slide from the box door 12 into the box 11 to complete the recovery of the drone.

[0042] This embodiment integrates the translation drive mechanism 3, the support mechanism and the unlocking mechanism 7, so that the device can realize the automatic retraction and deployment of the drone, reduce manual intervention, and improve operation efficiency. It is particularly suitable for scenarios that require rapid response, such as emergency rescue, environmental monitoring or military reconnaissance.

[0043] Please refer to Figure 3 In this embodiment, the driving assembly 72 includes a first rotating driving member 721 arranged on the bottom plate 2, a turntable 722 arranged at the output end of the rotating driving member, and two guide units 723. The two sets of guide units 723 are respectively arranged on the bottom plate 2 and the clamping frame 5. One end of the pull rope 71 is connected to the turntable 722, and the other end is connected to the clamping plate 6 after passing through the two guide units 723. The first rotating driving member 721 is a motor, which can be fixed at the bottom or top of the bottom plate 2 and located in the middle of the bottom plate 2. Correspondingly, the turntable 722 can be arranged at the top or bottom of the bottom plate 2, that is, the motor and the turntable 722 are installed on opposite sides of the bottom plate 2, so that the installation space can be saved. One end of the pull rope 71 is connected to one side of the turntable 722, and the pull rope 71 is guided by the two guide units 723, so that it can be pulled more smoothly.

[0044] The first rotating driving member 721 drives the rotation of the rotating disk 722 to move the pull rope 71 connected to the rotating disk 722. Since the total length of the pull rope 71 remains unchanged, the end of the pull rope 71 connected to the clamping plate 6 will move synchronously to drive the movement of the clamping plate 6. The structure is simple and effective. Among them, the two guide units 723 are respectively arranged on the base plate 2 and the clamping frame 5, providing a stable guide path for the pull rope 71, avoiding the deviation or jamming of the pull rope 71 during the movement, thereby enhancing the stability and reliability of the system. Specifically, when the clamping frame 5 and the clamping plate 6 need to release the restriction on the drone, the first rotating driving member 721 will pull the pull rope 71, so that the pull rope 71 drives the clamping plate 6 to move to expand the clamping groove 61, and then the restriction can be contacted. When the drone needs to be fixed, the first rotating driving member 721 rotates in the opposite direction, the pull rope 71 is loosened, and the clamping plate 6 can re-clamp the drone under the action of elastic force.

[0045] Please refer to Figure 3-Figure 5 In this embodiment, the guide unit 723 includes a roller 7231 and a fixed seat 7232. The fixed seat 7232 is arranged on the bottom plate 2 or the clamping frame 5. Both ends of the roller 7231 are rotatably mounted on the fixed seat 7232 through bearings 7233. Among them, a funnel-shaped guide block is arranged on the roller 7231, which can more effectively limit the position of the pull rope 71. The bearing 7233 is a rolling bearing.

[0046] The roller 7231 in the guide unit 723 is designed to rotate on the fixed seat 7232 through the bearing 7233, which effectively reduces the friction between the pull rope 71 and the guide structure during the movement, thereby extending the service life of the pull rope 71 and the guide unit 723. In addition, the rolling action of the roller 7231 makes the movement of the pull rope 71 in the guide unit 723 smoother and reduces the resistance and vibration caused by friction, thereby ensuring the stability and accuracy of the movement of the clamping plate 6.

[0047] Please refer to Figure 3 and Figure 5 In this embodiment, a first ring hook 7221 is provided on the rotating disk 722, a second ring hook 62 is provided on the clamping plate 6, and both ends of the drawstring 71 are respectively fixed to the first ring hook 7221 and the second ring hook 62. In addition, in order to firmly fix the drawstring 71, a clamping buckle is provided at both ends of the drawstring 71, which is used to clamp the drawstring 71 after the drawstring 71 passes through the ring hook, so as to form a ring and be locked with the ring hook.

[0048] The first hook 7221 on the rotating disk 722 and the second hook 62 on the clamping plate 6 are designed so that the two ends of the pull rope 71 can be firmly fixed on the two hooks. This connection method is not only simple and reliable, but also can withstand a large pulling force, ensuring that the pull rope 71 will not fall off or break during the clamping process, thereby improving the safety and stability of the system and facilitating the installation and removal of the pull rope 71.

[0049] Please refer to Figure 5 In this embodiment, two rollers 63 are arranged on the clamping plate 6 at intervals. The two rollers 63 are rotatably mounted on opposite sides of the clamping plate 6 through a connecting rod 64. The two rollers 63 are arranged on the clamping frame 5 and can move relative to the clamping frame 5. The two rollers 63 are arranged at the bottom of the clamping plate 6 and are fixedly mounted by a connecting rod 64. The assembly of the connecting rod 64 and the clamping plate 6 is a clearance fit, while the rollers 63 and the connecting rod 64 are an interference fit, or the two rollers 63 and the connecting rod 64 are directly bonded or welded, that is, the two rollers 63 and the connecting rod 64 remain relatively stationary.

[0050] The design of the two rollers 63 can effectively reduce the friction resistance between the splint 6 and the clamping frame 5 during movement. Compared with the sliding contact, the rolling contact between the rollers 63 and the clamping frame 5 can significantly reduce friction and wear, thereby extending the service life of the splint 6 and the clamping frame 5, while improving the smoothness and efficiency of the clamping action, and also helping to accurately control the movement trajectory of the splint 6.

[0051] Please refer to Figure 4 and Figure 5 In this embodiment, the side of the clamping plate 6 facing the clamping groove 61 is concave, and the other side is provided with an elastic member 8, and the two ends of the elastic member 8 are respectively in contact with the clamping plate 6 and the clamping frame 5. The elastic member 8 is a metal compression spring, and its function is to provide a clamping force for the clamping plate 6 when the clamping plate 6 clamps the drone.

[0052] The concave design of the clamping plate 6 can better fit the clamped part of the drone, thereby increasing the clamping force, so that the clamping plate 6 can distribute the pressure more evenly during the clamping process, avoiding local damage to the clamped object. The elastic member 8 provided on the other side of the clamping plate 6 can apply a clamping force to the clamping plate 6, so that the clamping plate 6 can stably clamp the drone.

[0053] It should be noted that a groove is provided on the side of the turntable 722, and when the turntable 722 rotates, the pull rope 71 can be wound around the groove to control the position of the pull rope 71. In one embodiment, when the first rotating drive member 721 rotates clockwise, the turntable 722 rotates accordingly and winds the pull rope 71 around the groove, so that the pull rope 71 can pull the clamping plate 6 to compress the elastic member 8 and expand the clamping groove 61. When the first rotating drive member 721 rotates counterclockwise, the pull rope 71 is released along the groove, and the pull rope 71 releases the tension on the clamping plate 6, so that the clamping plate 6 can be reset and clamp the drone under the action of the elastic member 8.

[0054] Please refer to Figure 2In this embodiment, the translation drive mechanism 3 includes a second rotation drive member 31 disposed on the housing 11, a gear 32 connected to the output end of the second rotation drive member 31, and a rack 33 connected to the bottom plate 2, and the gear 32 is meshed with the rack 33. The translation drive mechanism 3 can be two groups arranged at intervals, so as to improve the driving stability of the bottom plate 2. In addition, the second rotation drive member 31 can be fixed to the outside of the housing 11, and the output end of the second rotation drive member 31 can be extended into the housing 11 through the arrangement of the through hole to be fixedly connected with the gear 32.

[0055] The second rotating driving member 31 drives the gear 32 to rotate, and the gear 32 is meshed with the rack 33 on the base plate 2. Therefore, when the gear 32 rotates, it can drive the rack 33 to move, thereby driving the base plate 2 to move. The meshing transmission ratio of the gear 32 and the rack 33 is fixed. Therefore, by accurately controlling the rotation speed and direction of the second rotating driving member 31, accurate control of the translation distance and direction of the base plate 2 can be achieved.

[0056] Please refer to Figure 2 , Figure 6 and Figure 7 In this embodiment, a first guide rail 111 is provided in the box body 11, and a second guide rail 21 matching the first guide rail 111 is provided on the bottom plate 2, and the first guide rail 111 is slidably clamped on the second guide rail 21. The first guide rail 111 and the second guide rail 21 are two sets arranged at intervals, and the first guide rail 111 and the second guide rail 21 are respectively fixed to the box body 11 and the bottom plate 2 by multiple bolts. The arrangement of the first guide rail 111 and the second guide rail 21 can ensure the stability and accuracy of the bottom plate 2 during movement, provide a stable movement path for the bottom plate 2, and reduce the error caused by offset or shaking.

[0057] In this embodiment, a guide rail slide ring 9 is provided between the first guide rail 111 and the second guide rail 21, and a plurality of balls 91 are rotatably clamped on the guide rail slide ring 9. The plurality of balls 91 are arranged at intervals along the moving direction of the bottom plate 2, and the balls 91 abut against the second guide rail 21. Specifically, the contact surface between the second guide rail 21 and the balls 91 is an arc surface, and this arrangement can effectively prevent the bottom plate 2 from extending out of the box body 11 and the box door 12 from retracting and causing the tilting. Two continuous steps are provided at both ends of the first guide rail 111. The step located on the outside is used to abut against the guide rail slide ring 9 to prevent the guide rail slide ring 9 from sliding forward and backward, and the step located on the inside is used to control the distance between the guide rail slide ring 9 and the inner wall of the first guide rail 111, thereby controlling the distance of the balls 91 and preventing the balls 91 from contacting the inner side of the first guide rail 111.

[0058] The design of the guide rail slide ring 9 and the ball 91 can reduce the direct friction between the first guide rail 111 and the second guide rail 21, and convert it into rolling friction between the ball 91 and the guide rail. The resistance of rolling friction is much smaller than that of sliding friction, which can not only improve the smoothness of the sliding of the first guide rail 111, but also greatly reduce friction and wear, extend the service life of the guide rail and the ball 91, and reduce energy loss.

[0059] Please refer to Figure 2 In this embodiment, there are two supporting mechanisms, which are centrally symmetrically arranged relative to the unlocking mechanism 7 . Two pull ropes 71 are arranged on the unlocking mechanism 7 , and the two pull ropes 71 are respectively connected to the two clamping plates 6 .

[0060] The two support mechanisms are used together to support and clamp the drone, which can effectively improve the stability of the drone and avoid the drone being unbalanced or damaged due to excessive force on one side. At the same time, the design of two stretching rods allows one unlocking mechanism 7 to simultaneously unlock the two support mechanisms, making the structure more compact and effectively reducing costs. Specifically, taking a four-arm drone as an example, the two support blocks 4 and the two clamping frames 5 are matched with the four arms of the drone respectively, so that each arm of the drone can be effectively supported.

[0061] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are 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 should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic retractable device for a drone, characterized in that: include: The case comprises a case body and a case door elastically hinged to the case body; A bottom plate is slidably disposed in the box; A translation driving mechanism, disposed in the box body, for driving the bottom plate to slide out of or into the box door; A supporting mechanism, arranged on the bottom plate, for placing the UAV, comprising a support block and a clamping frame arranged at intervals, and a clamping plate movably arranged on the clamping frame, wherein the clamping plate is elastically connected to the clamping frame and a clamping groove for fixing the UAV is formed between the clamping plate and the clamping frame; The unlocking mechanism is arranged on the base plate, and includes a pull rope and a driving component for driving the pull rope to move. One end of the pull rope is connected to the driving component, and the other end is connected to the clamping plate. When the pull rope moves, it can drive the movement of the clamping plate to expand or shrink the clamping groove.

2. The automatic retractable device for unmanned aerial vehicle according to claim 1, characterized in that: The driving assembly includes a first rotating driving member arranged on the base plate, a turntable arranged on the output end of the rotating driving member, and two guide units. The two groups of guide units are respectively arranged on the base plate and the clamping frame. One end of the pull rope is connected to the turntable, and the other end is connected to the clamping plate after passing through the two guide units.

3. The automatic retractable device for unmanned aerial vehicle according to claim 2, characterized in that: The guide unit comprises a roller and a fixed seat, wherein the fixed seat is arranged on the bottom plate or the clamping frame, and both ends of the roller are rotatably mounted on the fixed seat through bearings.

4. The automatic retractable device for unmanned aerial vehicle according to claim 1, characterized in that: The rotating disk is provided with a first ring hook, the clamping plate is provided with a second ring hook, and two ends of the pull rope are respectively fixed to the first ring hook and the second ring hook.

5. The automatic retractable device for unmanned aerial vehicle according to claim 1, characterized in that: Two rollers are arranged at intervals on the clamping plate, and the two rollers are rotatably mounted on opposite sides of the clamping plate through a connecting rod. The two rollers are arranged on the clamping frame and can move relative to the clamping frame.

6. The drone retracting and launching device according to claim 1, characterized in that: One side of the clamping plate facing the clamping groove is a concave surface, and the other side is provided with an elastic member, and two ends of the elastic member are respectively in contact with the clamping plate and the clamping frame.

7. The automatic retractable device for unmanned aerial vehicle according to claim 1, characterized in that: The translation driving mechanism includes a second rotation driving member arranged on the box body, a gear connected to the output end of the second rotation driving member, and a rack connected to the bottom plate, and the gear is meshedly connected with the rack.

8. The automatic retractable device for unmanned aerial vehicle according to claim 1, characterized in that: A first guide rail is disposed in the box body, a second guide rail matching the first guide rail is disposed on the bottom plate, and the first guide rail is slidably clamped on the second guide rail.

9. The automatic retractable device for unmanned aerial vehicle according to claim 8, characterized in that: A guide rail slide ring is provided between the first guide rail and the second guide rail, and a plurality of balls are rotatably clamped on the guide rail slide ring. The plurality of balls are arranged at intervals along the moving direction of the bottom plate, and the balls abut against the second guide rail.

10. The automatic retractable device for a drone according to any one of claims 1 to 9, characterized in that: There are two support mechanisms, and the two support mechanisms are centrally symmetrically arranged relative to the unlocking mechanism. Two pull ropes are arranged on the unlocking mechanism, and the two pull ropes are respectively connected to the two clamping plates.

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