Unmanned aerial vehicle capable of automatically fusing

Abstract

The utility model relates to an unmanned aerial vehicle capable of fusing automatically. The unmanned aerial vehicle comprises a winding device and an emergency fusing device, the winding device comprises a take-up wheel, a rope wound on the take-up wheel, a trigger rod of a hollow structure and a detection switch for controlling the take-up wheel; when the winding device is used for winding, the trigger rod can trigger the detection switch, so that the winding wheel stops rotating; the emergency fusing device comprises a sliding assembly, a first elastic piece, a fuse wire and a fusing switch. The head end of the first elastic piece is fixed, and the tail end abuts against the sliding assembly so that the sliding assembly can be away from the fuse switch. The rope bypasses the sliding assembly and then penetrates through the trigger rod to be connected with a carrying object. When the carrying object is blocked, the rope pulls the sliding assembly to compress the first elastic piece, the sliding assembly slides towards the fuse switch and triggers the fuse switch, the rope makes contact with the fuse wire, and the fuse wire cuts the rope in an electric heating mode. The winding device can enable a carried object to operate in a narrow and complex area, and the emergency fusing device can automatically fuse a rope to protect the unmanned aerial vehicle.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a UAV capable of automatic fuse breaking. Background Technology

[0002] With the development of modern drone technology, drones are being used in various transportation, military, police, emergency rescue, and urban management operations, accompanied by a variety of drone mission payloads. Currently, most payloads are directly mounted on the drone, using methods such as mounting brackets, clamping, binding, or suspension. These methods are suitable for open, spacious flight environments, but have significant limitations in densely wooded, confined, and complex areas. For example, payloads can easily become entangled or snagged on foreign objects, making proper recovery impossible and potentially leading to drone crashes or explosions. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a drone that can automatically sever the cable, which can install the payload in a place far away from the drone itself by means of a cable, and can make the payload move in a small and complex area by means of a winch device, and can automatically sever the cable by means of an emergency severing device to protect the drone.

[0004] An automatically fusible unmanned aerial vehicle (UAV) includes a winch for controlling the lifting and lowering of its payload and an emergency fusible device. The winch includes a take-up reel, a cable wound around the reel, a hollow trigger rod, and a detection switch controlling the reel. When the winch retracts the cable, the trigger rod activates the detection switch, stopping the reel's rotation. The emergency fusible device includes a sliding assembly, a first elastic element, a fusible wire, and a fusible switch electrically connected to the fusible wire. The first elastic element has a fixed head and a tail that abuts against the sliding assembly, moving the sliding assembly away from the fusible switch. The cable passes around the sliding assembly, through the trigger rod, and connects to the payload. When the payload is obstructed, the cable pulls the sliding assembly, compressing the first elastic element. The sliding assembly slides towards the fusible switch, triggering it. The cable then contacts the fusible wire, which electrothermally cuts the cable.

[0005] This invention discloses an automatically fusible unmanned aerial vehicle (UAV) that controls the winding and unwinding of a cable connected to its payload via a take-up reel. When the cable is wound up, the payload rises and contacts a trigger rod, pushing the rod to move and triggering a detection switch. This stops the take-up reel from rotating, automatically stopping the cable winding. At this time, the tension at the cable end is low, and the first elastic element abuts against a sliding assembly, moving the sliding assembly away from the fusible switch. When the payload is caught on a foreign object, the tension at the cable end increases. The cable pulls the sliding assembly closer to the fusible switch, compressing the first elastic element and triggering the fusible switch to heat the fuse. Simultaneously, the cable, having bypassed the sliding assembly, contacts the fusible wire and is electrothermally cut.

[0006] Furthermore, the automatically fusible drone also includes a self-locking device, which comprises a slidable self-locking rod and a second elastic element. The first end of the second elastic element is fixed, and the second end is connected to the self-locking rod. In its natural state, the second elastic element pushes the self-locking rod to any position on the path of the trigger rod moving toward the detection switch. When the trigger rod triggers the detection switch, the trigger rod pushes the self-locking rod to compress the second elastic element, and the self-locking rod moves to any position on the path of the sliding component moving toward the fusible switch and abuts against the sliding component, preventing it from approaching the fusible switch. When the payload rises and contacts the trigger rod, pushing the trigger rod to trigger the detection switch, the trigger rod exerts some resistance on the payload. This can easily increase the tension at the end of the cable, causing the emergency fuse to be accidentally triggered and the cable to be cut. Alternatively, if the detection switch malfunctions in controlling the take-up reel, the continuous winding of the cable can also increase the tension on the sliding component, causing the cable to be cut. Therefore, the UAV with automatic fuse-breaking capability described in this invention also includes a self-locking device. When the cable is wound up to the point where the trigger rod triggers the detection switch to stop winding, the self-locking rod moves and abuts against the sliding component, preventing it from approaching the fuse wire and moving. This effectively avoids the accidental triggering of the cable to be cut when the sliding component moves upward during cable tightening.

[0007] Furthermore, the fuse is disposed between the first elastic member and the sliding assembly.

[0008] Furthermore, the sliding assembly includes a pulley mounting base and a plurality of movable pulleys mounted on the pulley mounting base; the rope passes around the movable pulleys, then through the trigger rod and connects to the mounting object; when the first elastic element is compressed, the rope pulls the movable pulleys and the pulley mounting base closer to the fuse, and the pulley mounting base triggers the fuse switch. The sliding assembly adopts a force-saving structure with movable pulleys, achieving nearly twice the effect when the torque of the geared motor acts on the movable pulley group through the rope, thus reducing the torque requirements of the geared motor.

[0009] Furthermore, the drone capable of automatic fuse breaking also includes a housing; the take-up reel, the detection switch, and the emergency fuse breaking device are disposed inside the housing; the first elastic member and the second elastic member are both fixed to the inner wall of the housing; the sliding assembly can slide relative to the housing; a connection hole is provided at the bottom of the housing; the trigger rod passes through the connection hole and can move relative to the connection hole.

[0010] Furthermore, the trigger rod includes a rod portion and a limiting portion fixedly connected to the rod portion. The rod portion can move up and down along its length through the connecting hole, and the outer diameter of the limiting portion is larger than the diameter of the connecting hole. This prevents the trigger rod from falling out of the connecting hole.

[0011] Furthermore, the automatically fused drone also includes a guide wheel; the sliding assembly is located below the take-up reel; the detection switch is located above the trigger rod, and the distance between the detection switch and the connection hole is not greater than the total length of the trigger rod; the guide wheel is located above the detection switch and its position is higher than any movable position of the sliding assembly; the cable first passes downwards around the sliding assembly, then around the guide wheel, and then passes through the trigger rod and out of the connection hole to connect with the payload.

[0012] Furthermore, in its natural state, the second elastic element pushes the self-locking rod above the trigger rod; when the trigger rod moves upward, it pushes the self-locking rod to compress the second elastic element, and the self-locking rod abuts against the surface of the pulley mounting base, preventing it from approaching the fuse switch.

[0013] Furthermore, the hoisting device also includes a geared motor, the take-up reel is fixed on the shaft of the geared motor, and the detection switch is electrically connected to the geared motor.

[0014] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the automatically melting state of a drone's winding cable as described in the embodiment.

[0016] Figure 2 This is a schematic diagram of the release cable state of a drone that can automatically melt and break, as described in the embodiment.

[0017] Figure 3 for Figure 1 A schematic diagram of the internal structure of shell 1;

[0018] Figure 4 for Figure 2 A schematic diagram of the internal structure of shell 1;

[0019] Figure 5 This is a schematic diagram of the structure of the hoisting device 2 described in the embodiment;

[0020] Figure 6 for Figure 5 Exploded view of the hoisting device 2;

[0021] Figure 7 This is a schematic diagram of the emergency fuse device 3 described in the embodiment;

[0022] Figure 8 for Figure 5 Exploded view of the emergency fuse device 3. Detailed Implementation

[0023] The terminology used in the embodiments of this application is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of this application. It should be understood in this application that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0024] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0026] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

[0030] Please see Figures 1-6 An automatic fuselage unmanned aerial vehicle (UAV) includes a shell 1, a winch device 2, an emergency fuselage device 3, and a self-locking device 4; the winch device 2 and the emergency fuselage device 3 are disposed inside the shell 1; the winch device 2 is used to control the lifting and lowering of the payload 5.

[0031] The housing 1 can be installed on the bottom or side of the drone body 12; a connection hole is provided at the lower left bottom of the housing 1.

[0032] Please see Figures 3-6 The hoisting device 2 includes a geared motor 21, a take-up reel 22 fixed on the shaft of the geared motor 21, a flange connector 23 for fixing the take-up reel 22, a rope 24 wound on the take-up reel 22, a trigger rod 25 passing through the connection hole and movable relative to the connection hole, and a detection switch 26 for controlling the take-up reel 22. The detection switch 26 is electrically connected to the geared motor 21.

[0033] Specifically, the geared motor 21 is fixedly installed on the inner wall of the upper right side of the housing 1, the flange connector 23 is fixed on the rotating shaft of the geared motor 21, and the take-up reel 22 is fixedly installed on the flange connector 23 by four screws; when the geared motor 21 starts, it drives the flange connector 23 to rotate, thereby driving the take-up reel 22 to rotate, realizing the winding and unwinding of the rope 24. Specifically, the winding and unwinding length of the rope 24 is controlled by controlling the number of rotations of the geared motor 21.

[0034] The trigger rod 25 is a hollow structure, preferably a hollow tubular structure, including a rod portion 252 and a limiting portion 254 fixedly connected to the top end of the rod portion 252. The rod portion 252 can move up and down along its length through the connecting hole. The outer diameter of the limiting portion 254 is larger than the diameter of the connecting hole, so that the trigger rod 25 cannot fall off the connecting hole. The detection switch 26 is disposed above the trigger rod 25 and fixed to the inner wall of the housing 1, and the distance between the detection switch 26 and the connecting hole is not greater than the total length of the trigger rod 25. When the winch 2 is reeling in the wire, the trigger rod 25 can trigger the detection switch 26 to control the take-up reel 22 to stop rotating.

[0035] Please see Figures 7-8 The emergency fuse device 3 includes a sliding assembly 31 that can slide relative to the housing 1, a first elastic element 32, a fuse mounting plate 33, a fuse 34 mounted on the fuse mounting plate 33, and a fuse switch 35 electrically connected to the fuse 34. The fuse 34 is disposed between the first elastic element 32 and the sliding assembly 31, and the fuse switch 35 is disposed at any position on the path of the sliding assembly 31 toward the fuse 34. The cable 24 passes around the sliding assembly 31 and passes through the trigger rod 25 to connect with the carrier 5. When the carrier is obstructed, the tension at the end of the cable 24 increases, and the cable 24 pulls the sliding assembly 31 to compress the first elastic element 32. The sliding assembly 31 slides toward the fuse switch 35 and triggers the fuse switch 35 to heat the fuse 34. The cable 24, which passes around the sliding assembly 31, moves toward the fuse 34, and the fuse 34 electrothermally cuts the cable 24.

[0036] Specifically, the first elastic element 32 is disposed below the take-up reel 22, the sliding assembly 31 is disposed below the first elastic element 32, and the fuse mounting plate 33 is preferably an insulating PCB board, disposed between the first elastic element 32 and the sliding assembly 31, and fixed to the inner wall of the housing 1. The sliding assembly 31 can slide relative to the fuse mounting plate 33. The first elastic element 32 is preferably a spring. The first end of the first elastic element 32 is fixed to the inner wall of the housing 1, and the end abuts against the sliding assembly 31, causing the sliding assembly 31 to move away from the fuse 34. The sliding assembly 31 includes a pulley mounting base 312 and several movable pulleys 314 mounted on the pulley mounting base 312. In this embodiment, the number of movable pulleys 314 is two; the pulley mounting base 312 includes a top 3122 and an n-shaped mounting portion 3124 disposed below and connected to the top 3122; the mounting portion 3124 includes fixing portions disposed at the left and right ends, and the movable pulleys 314 are respectively fixed on the fixing portions at the left and right ends of the mounting portion 3124; the top 3122 is provided with a receiving groove for accommodating the first elastic member 32. The fuse switch 35 is disposed above the first elastic member 32 and fixed to the inner wall of the housing 1. When the sliding assembly 31 moves close to the fuse wire 34, the top 3122 can trigger the fuse switch 35. The cable 24 passes around the movable pulley 314 and then passes through the trigger rod 25 to connect with the mounting object 5. As a further improvement to the above solution, the cable segments between the fuse wire 34 and the two movable pulleys 314 are perpendicular to each other, and the sliding assembly 31 moves along the extension direction of the fuse wire 34. When the first elastic member 32 is compressed, the cable 24 pulls the pulley mounting base 312 and the movable pulleys 314 closer to the fuse wire 34, causing the pulley mounting base 312 to trigger the fuse switch 35.

[0037] Furthermore, the hoisting device 2 also includes a plurality of guide wheels 27 for adjusting the direction of the cable 24. In this embodiment, the number of guide wheels is one, the guide wheel 27 is located above the detection switch 26, and the position of the guide wheel 27 is higher than any movable position of the sliding assembly 31. The guide wheel 27 is fixed to the inner wall of the housing 1. The cable 24 on the take-up reel 22 first passes downward around the movable pulley 314, then around the guide wheel 27, and then the end of the cable 24 passes downward through the trigger rod 25 and connects to the mounting object 5.

[0038] Please see Figures 3-4The self-locking device 4 includes a slidable self-locking rod 42 and a second elastic element 44. The self-locking rod 42 can slide relative to the housing 1. The first end of the second elastic element 44 is disposed above the sliding assembly 31 and fixed to the inner wall of the housing 1, and the second end is connected to the self-locking rod 42. In its natural state, the second elastic element 44 pushes the self-locking rod 42 to any position on the path of the trigger rod 25 moving towards the detection switch 26. When the trigger rod 25 moves upward to trigger the detection switch 26, the limiting part 254 of the trigger rod 25 pushes the self-locking rod 42 to compress the second elastic element 44. The self-locking rod 42 moves to any position on the path of the sliding assembly 31 moving towards the fuse switch 35 and abuts against the sliding assembly 31, preventing it from approaching the fuse switch 35. In this embodiment, the second elastic element 44 is a spring, and in its natural state, the second elastic element 44 pushes the self-locking rod 42 above the trigger rod 25. When the trigger rod 25 moves upward, the limiting part 254 of the trigger rod 25 pushes the self-locking rod 42 to compress the second elastic member 44, and the self-locking rod 42 moves above the pulley mounting base 312 and abuts against the upper surface of the pulley mounting base 312 through a limiting member, preventing it from approaching the fuse switch 35. At the same time, it also prevents the rope 24 that goes around the moving pulley 314 from contacting the fuse wire 34.

[0039] Please see Figures 3-4When the drone's reel cable 24, which is capable of automatic fusion, is entangled or caught by a foreign object, preventing the drone from being properly retrieved, the tension at the end of the cable 24 connected to the payload 5 increases. When the resultant force of the cable 24 acting on the sliding component 31 is greater than the elastic force of the first elastic element 32, the cable 24 pulls the sliding component 31 upward, compressing the first elastic element 32. The top 3122 of the pulley mounting base 312 triggers the fusion switch 35, and the fuse 34 heats up. When the cable 24, which passes around the moving pulley 314, comes into contact with the fuse 34, it is heated and cut. The first elastic element 32 pushes the pulley mounting base 312 away from the fusion switch 35, and the fusion switch 35 automatically resets, thereby achieving normal retrieval of the drone and protecting it. When the payload 5 can be retrieved normally, the first elastic element 32 abuts against the surface of the pulley mounting base 312 to keep it away from the fuse 34. The payload 5 rises with the cable 24. When the payload 5 contacts the bottom of the trigger rod 25, it drives the trigger rod 25 to rise until the trigger rod 25 triggers the detection switch 26 located above the trigger rod 25. The detection switch 26 controls the take-up reel 22 to stop rotating, thereby realizing the function of automatically stopping the take-up of the drone cable 24. At the same time, during the rise of the trigger rod 25, it contacts and pushes the self-locking rod 42 to compress the second elastic element 44. The self-locking rod 42 moves to the top of the pulley mounting base 312 and abuts against the upper surface of the pulley mounting base 312, preventing it from approaching the fuse switch 35 and moving. It also prevents the cable 24 that bypasses the moving pulley 314 from contacting the fuse 34 and causing the cable 24 to be accidentally cut. When the cable 24 is released, the trigger rod 25 will slide downward under the action of gravity, and the detection switch 26 will automatically reset; at the same time, the self-locking rod 42 will be pushed above the trigger rod 25 by the second elastic element 44 to reset, automatically releasing the restriction on the pulley mounting seat 312.

[0040] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A drone capable of automatic fuse breaking, characterized in that: The device includes a winch for controlling the lifting and lowering of the load and an emergency fuse. The winch includes a take-up reel, a rope wound on the take-up reel, a hollow trigger rod, and a detection switch for controlling the take-up reel. When the winch retracts the rope, the trigger rod can trigger the detection switch, causing the take-up reel to stop rotating. The emergency fuse includes a sliding assembly, a first elastic element, a fuse wire, and a fuse switch electrically connected to the fuse wire. The first elastic element has a fixed head end and abuts against the sliding assembly, causing the sliding assembly to move away from the fuse switch. The rope passes around the sliding assembly, through the trigger rod, and connects to the load. When the load is obstructed, the rope pulls the sliding assembly to compress the first elastic element, the sliding assembly slides toward the fuse switch and triggers the fuse switch, the rope contacts the fuse wire, and the fuse wire electrothermally cuts the rope.

2. The UAV capable of automatic fuse-breaking according to claim 1, characterized in that: It also includes a self-locking device, which includes a slidable self-locking rod and a second elastic element; the first end of the second elastic element is fixed and the second end is connected to the self-locking rod. In its natural state, the second elastic element pushes the self-locking rod to any position on the path of the trigger rod moving toward the detection switch. When the trigger rod triggers the detection switch, the trigger rod pushes the self-locking rod to compress the second elastic element. The self-locking rod moves to any position on the sliding assembly's path toward the fuse switch and abuts against the sliding assembly, preventing it from approaching the fuse switch.

3. The UAV capable of automatic fuse-breaking according to claim 2, characterized in that: The fuse is disposed between the first elastic element and the sliding component.

4. The UAV capable of automatic fuse-breaking according to claim 3, characterized in that: The sliding assembly includes a pulley mounting base and a plurality of movable pulleys mounted on the pulley mounting base; the rope passes around the movable pulleys and then through the trigger rod to connect with the mounting object; when the first elastic element is compressed, the rope pulls the movable pulleys and the pulley mounting base closer to the fuse, and the pulley mounting base triggers the fuse switch.

5. The UAV capable of automatic fuse-breaking according to claim 4, characterized in that: The sliding component is disposed below the first elastic element, and the fuse switch is disposed above the first elastic element; the pulley mounting base includes a top and a mounting part disposed below the top and connected to the top, the movable pulley is fixed on the mounting part, and the top is provided with a receiving groove for accommodating the first elastic element; When the sliding component moves close to the fuse wire, the top can trigger the fuse switch.

6. The UAV capable of automatic fuse-breaking according to claim 5, characterized in that: It also includes a housing; the take-up reel, the detection switch and the emergency fuse are disposed inside the housing; the first and second elastic elements are both fixed to the inner wall of the housing; the sliding assembly can slide relative to the housing; a connecting hole is provided at the bottom of the housing; the trigger rod passes through the connecting hole and can move relative to the connecting hole.

7. The UAV capable of automatic fuse-breaking according to claim 6, characterized in that: The trigger rod includes a rod portion and a limiting portion fixedly connected to the rod portion. The rod portion can move up and down along its length range through the connecting hole, and the outer diameter of the limiting portion is larger than the diameter of the connecting hole.

8. The UAV capable of automatic fuse-breaking according to claim 7, characterized in that: The automatically fused drone also includes a guide wheel; the sliding assembly is located below the take-up reel; the detection switch is located above the trigger rod, and the distance between the detection switch and the connection hole is not greater than the total length of the trigger rod; The guide wheel is located above the detection switch and its position is higher than any movable position of the sliding component; the cable first goes down around the sliding component, then around the guide wheel, and then passes through the trigger rod and out of the connection hole to connect with the mount.

9. The UAV capable of automatic fuse-breaking according to claim 8, characterized in that: In its natural state, the second elastic element pushes the self-locking rod above the trigger rod; when the trigger rod moves upward, it pushes the self-locking rod to compress the second elastic element, and the self-locking rod abuts against the surface of the pulley mounting base, preventing it from approaching the fusible switch.

10. The UAV capable of automatic fuse-off according to any one of claims 1 to 9, characterized in that: The winch device also includes a geared motor, the take-up reel is fixed on the shaft of the geared motor, and the detection switch is electrically connected to the geared motor.

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