Quick connecting and locking device for unmanned aerial vehicle

Abstract

The invention discloses an unmanned aerial vehicle quick connecting and locking device, and belongs to the technical field of unmanned aerial vehicle load quick connecting and locking. The device comprises a rotating rod and a connecting rod on the side of the unmanned aerial vehicle, and a fixing rod connected with a load. And the rotating rod drives the connecting rod to rotate, so that the locking structure on the connecting rod is matched with the corresponding part on the fixed rod to complete automatic locking. Mechanical self-locking is achieved through rotation, manual intervention is not needed, and connection is efficient and reliable; the design of a telescopic rotating rod and an elastic clamping groove is combined, so that the alignment precision and the vibration resistance are improved; and the standardized interface supports quick replacement of various types of loads. The problems that a traditional connection mode is low in efficiency and poor in stability are solved, and the method has good universality, safety and automation level and is suitable for an unmanned aerial vehicle multifunctional task rapid deployment scene.

Description

Technical Field

[0001] This invention belongs to the field of rapid connection and locking technology for drone payloads, and relates to a rapid connection and locking device for drones. Background Technology

[0002] With the rapid development of drone technology, its application areas are constantly expanding, and it is accelerating its evolution towards multi-functionality and intelligence. However, current drone technology generally faces a key technical bottleneck: the connection and installation process between drones and various payloads is inefficient, with this step largely relying on manual operation. This situation not only severely restricts the improvement of the automation level of drone systems but also greatly limits the application potential of drones in a wider range of scenarios. Specifically, the connection technology between drones and payloads has several shortcomings: the connection process is cumbersome and time-consuming, requiring manual completion of each operation step, resulting in low overall efficiency; the interface standards between different payloads lack uniformity, making it difficult to achieve rapid compatibility and connection; the connection accuracy is difficult to control precisely, easily leading to unstable connections; and the locking strength after connection is insufficient, posing a risk of payload detachment during flight. Summary of the Invention The purpose of this invention is to solve the technical problem of complex connection methods caused by the lack of unified interface standards between different carriers in the prior art, and to provide a fast connection and locking device for drones.

[0003] To achieve the above objectives, the present invention employs the following technical solution: This invention provides a quick-connect locking device for unmanned aerial vehicles (UAVs), comprising a UAV side device and a fixed rod; the UAV side device includes a rotating rod and a connecting rod connected to the UAV; one end of the rotating rod is connected to the UAV and the other end is connected to the connecting rod; one end of the fixed rod is connected to a carrier and the other end is connected to the connecting rod; corresponding locking devices are respectively provided on the connecting rod and the fixed rod; when the rotating rod drives the connecting rod to rotate, the locking devices of the connecting rod and the fixed rod cooperate to lock the connection.

[0004] Furthermore, the rotating rod is a telescopic structure.

[0005] Furthermore, the connecting rod and the rotating rod are detachably connected.

[0006] Furthermore, the connecting rod is provided with several slots, and the fixing rod is provided with several fixing slots; the slots and fixing slots are matched to form a locking device.

[0007] Furthermore, the slot is equipped with an elastic element for automatic closing and locking.

[0008] Furthermore, the fixing rod includes a horizontal fixing rod and several vertical support rods; one end of the vertical support rod is connected to the horizontal fixing rod, and the other end is connected to the carrier.

[0009] Furthermore, a fixing slot is provided on the horizontal fixing rod.

[0010] Furthermore, the carrier is provided with a carrier slot; the other end of the vertical support rod is connected to the carrier slot.

[0011] Furthermore, the other end of the vertical support rod is detachably connected to the carrier slot.

[0012] Furthermore, the carrier slot is located at the top of the carrier.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a quick-connect locking device for unmanned aerial vehicles (UAVs). By setting up a linkage structure between a rotating rod and a connecting rod on the UAV side, and cooperating with a locking device on a fixed rod, automatic alignment and mechanical engagement are achieved through rotational motion. Since the rotating rod drives the connecting rod to rotate and triggers the locking action, the cumbersome steps of traditional manual installation are avoided, significantly improving connection efficiency. Simultaneously, the design of the rotating rod ensures precise positioning of the connecting rod during rotation. Its stable connection to the UAV and precise control of the connecting rod's rotation allow the connecting rod to accurately align with the fixed rod. Furthermore, the corresponding locking devices on the connecting rod and the fixed rod work together to provide a strong and stable connection force. This combination of precise positioning and stable connection effectively avoids problems such as carrier shaking and detachment caused by inaccurate or unstable connections, ensuring reliable carrier fixation during UAV flight, thereby improving the safety and stability of UAV flight. The combination of the rotating rod and connecting rod in the UAV-side device allows the device to adapt to carriers of different shapes, sizes, and types. The connection method between the fixed rod and the carrier also has a certain degree of versatility; simple adjustments are needed according to the specific characteristics of the carrier to achieve the connection. This wide adaptability allows the device to be applied to a variety of different mission scenarios, whether it is carrying photography equipment for aerial photography, carrying scientific exploration instruments for environmental monitoring, or transporting supplies, it can easily handle these tasks, greatly expanding the application scope of drones. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Fig. 1 This is a schematic diagram of the UAV side structure of the UAV quick connection locking device of the present invention; Fig. 2This is a schematic diagram of the carrier side structure of the drone quick connection and locking device of the present invention.

[0016] Wherein: 1-UAV device; 2-Rotating rod; 3-Slot; 4-Connecting rod; 5-Fixing slot; 6-Carrier slot; 7-Fixing rod; 8-Carrier. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 the present invention according to the specific circumstances.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings: See Figs. 1-2 One embodiment of the present invention provides a quick-connect locking device for a drone, including a drone side device and a fixing rod 7; The drone-side device includes a rotating rod 2 and a connecting rod 4 connected to the drone; one end of the rotating rod 2 is connected to the drone, and the other end is connected to the connecting rod 4. One end of the fixed rod 7 is connected to the carrier, and the other end is connected to the connecting rod 4; the connecting rod 4 and the fixed rod 7 are respectively provided with corresponding locking devices; when the rotating rod 2 drives the connecting rod 4 to rotate, the locking devices of the connecting rod 4 and the fixed rod 7 cooperate to lock.

[0024] This embodiment provides a technical solution for achieving efficient, reliable, and automated connection between a drone and an external payload. By converting the connection action into rotational motion and combining it with a mechanical locking structure, rapid docking and self-locking functions without manual intervention are achieved, improving the safety and repeatability of the connection process.

[0025] The UAV side device is located at the bottom of the UAV body, serving as a connection and execution end for spatial docking with external fixed structures. This device mainly includes a rotating rod 2 and a connecting rod 4, which form a linked transmission structure. One end of the rotating rod 2 is fixedly connected to the UAV body and can achieve controllable horizontal rotation through a built-in drive mechanism; the other end forms a rigid or adjustable connection with the connecting rod 4, transmitting rotational power. The connecting rod 4, as an intermediate transition component, can be a straight rod structure, and its material can be high-strength aluminum alloy, carbon fiber composite material, or other lightweight high-strength metals to balance structural strength and overall weight control. The rotation of the rotating rod 2 is driven by a servo motor or stepper motor mounted on the UAV, working in conjunction with an attitude control system to achieve precise positioning, ensuring that the connecting rod 4 accurately aligns with the target interface position.

[0026] The fixing rod 7 is located on one side of the external carrier and serves as the connected end, used to support and fix the equipment to be mounted. One end of it connects to the carrier (such as a cleaning robot base, sensor platform, or handling fixture), and the other end extends into a connection area for docking with the connecting rod 4. The fixing rod (7) can be a rigid metal rod structure with sufficient bending and torsional resistance to maintain connection stability under flight vibration and load changes. The rod can be designed as a single or multiple rods depending on the actual installation space, and its axis is usually perpendicular to the carrier mounting surface to facilitate vertical docking with the UAV side device from above.

[0027] A matching locking device is provided between the connecting rod 4 and the fixed rod 7, which is the core mechanism for achieving automatic locking. The locking device includes mating components respectively set on the two parts, such as protrusions and grooves, teeth and slots, wedge surfaces and inclined pressure blocks, etc., as long as they can trigger the locking function by relative rotation. When the rotating rod 2 drives the connecting rod 4 to rotate around its own axis, the locking element on the connecting rod 4 rotates to the position where it engages with the corresponding locking element on the fixed rod 7, thereby forming a mechanical interlock. This process does not require additional axial thrust or external force assistance; locking can be completed solely by rotational action, simplifying the control logic and execution process.

[0028] As an alternative implementation, the locking device can be designed as a multi-point synchronous locking structure, that is, multiple slots 3 are evenly distributed around the circumference of the connecting rod 4, and the same number of fixing slots 5 are correspondingly provided at the end of the fixing rod 7. When the two are rotated and aligned, they close and lock simultaneously, improving connection rigidity and anti-loosening ability. In another alternative, the locking device can use an electromagnetic lock, a magnetic slider, or an active locking element driven by a shape memory alloy, which automatically unfolds or retracts after receiving a control signal to achieve intelligent responsive connection. In addition, the locking device can also be integrated into the connection interface and hidden in the housing, improving the overall appearance and protection level.

[0029] The synergistic effect among the aforementioned components is manifested in the following ways: the rotating rod 2 provides active driving force and spatial positioning capability; the connecting rod 4 acts as a torque transmission intermediary, transmitting rotational motion to the locking interface; the fixed rod 7, as a passive mating end, provides a stable docking reference; and the locking device utilizes geometric matching relationships to convert rotational displacement into radial or axial locking force, ultimately achieving a stable connection. Throughout the process, the UAV initially locates the docking area through visual recognition or inertial navigation systems, then the automatic rotating structure fine-tunes the angle to precisely align the locking components of the connecting rod 4 and the fixed rod 7, subsequently executing the rotational locking action.

[0030] The above technical solution enables a rapid and automated mechanical connection between the UAV and the external payload. By employing a rotary-driven trigger locking method, the high-precision linear alignment required by traditional plug-in connections is avoided, reducing the difficulty of docking. Simultaneously, the mechanical interlock structure possesses high vibration and shock resistance, effectively preventing accidental unlocking during flight. This device not only significantly improves connection efficiency and reduces manual intervention but also enhances the system's adaptability and operational safety under complex conditions, making it suitable for various application scenarios requiring frequent changes to mission modules.

[0031] Based on the above embodiments, the rotating rod 2 in this embodiment is a telescopic structure. By making the rotating rod 2 telescopic, this embodiment provides a connecting actuator capable of length adjustment in the axial direction. This design enhances the adaptability of the UAV side device during spatial positioning, and is particularly suitable for application scenarios with height deviations or incomplete alignment of docking positions. By introducing axial adjustment freedom, the spatial pose adjustment of the connecting rod 4 is no longer limited to horizontal rotation, thereby improving the overall fault tolerance and docking success rate of the connection operation.

[0032] The rotating rod 2, as a key transmission component connecting the drone and the connecting rod 4, primarily functions to transmit rotational motion from the drone's integrated automatic rotating structure and drive the connecting rod 4 to align with the fixed rod 7. When the rotating rod 2 is constructed as a telescopic structure, it possesses the ability to extend and retract along its axial direction, thus maintaining circumferential rigidity while achieving axial length variation. This telescopic function can be achieved through various mechanical structures, such as a sleeve-type sliding fit structure, including an outer tube and an inner rod, with the inner rod slidably inserted inside the outer tube and fixed in position after reaching the target position via a limiting mechanism or locking element; a threaded telescopic structure can also be used, utilizing a motor-driven lead screw or nut pair to achieve precise stroke control; linear actuation devices such as pneumatic, hydraulic, or electric push rods can also be selected as the telescopic power source to meet different load and response speed requirements.

[0033] As an optional embodiment, the telescopic section of the rotating rod 2 can be made of high-strength aluminum alloy or carbon fiber composite material, ensuring sufficient structural strength and bending stiffness while effectively reducing overall weight, thus meeting the lightweight requirements of UAVs. The triggering of the telescopic action can be integrated into the UAV's automatic control logic. For example, based on the actual distance information fed back by the visual recognition system or distance sensor, the telescopic amount can be dynamically adjusted to achieve adaptive docking. Furthermore, a position sensor (such as an encoder or Hall element) can be equipped during the telescopic process to monitor the telescopic stroke in real time and form a closed-loop feedback to ensure action accuracy.

[0034] The telescopic structure and rotation function are independent yet work in tandem: rotation is used for horizontal angular alignment, while telescopic adjustment is used for vertical height compensation. This combination gives the rotating rod 2 two degrees of freedom for adjustment, significantly improving connection reliability in complex environments or under non-ideal flight attitudes. For example, when the UAV's hovering altitude fluctuates due to wind disturbance, the telescopic structure can dynamically fine-tune its length to avoid interface damage from hard collisions. Similarly, even with manufacturing errors on the payload mounting platform or uneven ground, successful docking can still be achieved through telescopic compensation without relying on a high-precision flight control system to forcibly stabilize the altitude.

[0035] Through the above technical solution, this invention achieves effective compensation for spatial position deviations during the connection process. Because the rotating rod 2 has axial extension capability, the UAV can actively adjust its connection height when approaching the fixed rod 7, overcoming the problem of the high dependence on installation accuracy in traditional rigid connection structures. Therefore, this technical approach not only improves the robustness and automation of the connection process but also reduces the stringent requirements on the positioning accuracy of the flight control system, thereby improving the applicability and stability of the entire quick-connect locking device in practical applications.

[0036] Based on the above embodiments, in this embodiment, the connecting rod 4 and the rotating rod 2 are detachably connected. Through the above technical solution, the present invention achieves functional decoupling and modular reconfiguration capabilities between connecting components. Specifically, the connecting rod 4, as a key transitional component in the UAV side device, is detachably connected to the rotating rod 2, allowing them to be separated and reassembled without the need for special tools or through simple operations. This design enhances the adaptability of the device in different mission scenarios, allowing users to replace the connecting rod 4 with different structural parameters, slot layouts, or material properties according to actual needs, thereby adapting to diverse load interface forms.

[0037] The connecting rod 4 is one of the core components used for transmitting mechanical force and positioning alignment. One end of it connects to the rotating rod 2, and the other end engages with the fixed rod 7 through a locking device to complete the locking action. This component is typically made of high-strength, lightweight metal materials (such as aluminum alloy 6061-T6) or reinforced composite materials (such as carbon fiber reinforced epoxy resin) to balance structural strength and overall weight control. Its shape can be cylindrical, square, or polygonal cross-section rod, with the specific shape optimized according to the installation space and stress characteristics. The length and stiffness of the connecting rod 4 can be adjusted according to different application scenarios; for example, in tasks requiring greater connection stroke or higher bending resistance, an extended or reinforced structure can be selected.

[0038] The rotating rod 2, as an actuator directly connected to the UAV, is responsible for driving the connecting rod 4 to rotate horizontally and extend vertically. Its end is equipped with a standardized connection interface for docking with the connecting rod 4. This interface allows for quick assembly and disassembly through various detachable connection methods, including but not limited to threaded connections, snap-on quick-release mechanisms, magnetic coupling structures, key connections, or flange connections. These connection methods all possess excellent repeatability and positioning accuracy, ensuring reliable force transmission and spatial alignment after each assembly.

[0039] The specific implementation of detachable connections can be flexibly selected based on usage frequency, environmental conditions, and maintenance convenience requirements. For example, in high-frequency replacement scenarios, a snap-on quick-release structure with a self-locking function can be used. Operators only need to press the release button to detach the connection, and it automatically locks upon insertion, significantly improving work efficiency. In high-vibration or high-impact environments, threaded connections or key-pin combinations with anti-loosening washers are preferred to ensure long-term connection stability. In addition, guide bevels or positioning pin holes can be integrated into the connection interface to assist in blind insertion and alignment, reducing the difficulty of manual operation.

[0040] The detachable connection between connecting rod 4 and rotating rod 2 not only supports module replacement at the hardware level but also facilitates future system upgrades. When a part wears out or undergoes technological iteration, it is not necessary to replace the entire UAV-side device; only the corresponding module needs to be replaced to restore or improve performance. For example, if a new locking mechanism or sensor-integrated connecting rod is developed in the future, the existing connecting rod 4 can be directly replaced through the same interface, enabling a smooth evolution of the system.

[0041] Through the above technical solution, the present invention achieves high flexibility and maintainability due to the detachable connection components. Because the connecting rod 4 and the rotating rod 2 no longer use fixed welding or irreversible connection methods, the problems of difficult replacement and poor versatility in traditional structures are solved, enabling the same UAV to quickly adapt to multiple mission payloads. At the same time, it also facilitates on-site replacement of faulty components in the field or under emergency conditions, improving system availability and response speed, and achieving the technical effects of reducing maintenance costs and extending equipment lifespan.

[0042] Based on the above embodiments, in this embodiment, the connecting rod 4 is provided with a plurality of slots 3, and the fixing rod 7 is provided with a plurality of fixing slots 5; the slots 3 and the fixing slots 5 are adapted to each other to form a locking device.

[0043] Through the above technical solution, this invention achieves a reliable mechanical locking of the connection between the UAV and the carrier. This solution utilizes matching slot structures on the connecting rod and the fixed rod, which automatically engage when the two rotate relative to each other to a predetermined position, forming a physical limit and thus completing a rapid locking action. The entire process requires no manual intervention, is simple to operate, and responds quickly, making it suitable for automated docking needs in various mission scenarios.

[0044] The connecting rod 4 is a key component for transmitting rotational motion and bearing locking force. One end connects to the rotating rod 2, and the other end engages with the fixed rod 7 to achieve the locking function. The connecting rod 4 can be made of high-strength, lightweight metal materials, such as aluminum alloy or titanium alloy, to balance structural strength and overall weight control, meeting the lightweight design requirements of UAVs. Its shape can be cylindrical, polygonal, or other adaptable structures, with the specific shape optimized according to the installation space and force distribution. In this embodiment, the connecting rod 4 has multiple slots 3 arranged axially, which are evenly distributed circumferentially for multi-point engagement with corresponding structures on the fixed rod 7.

[0045] The slots 3 are located on the outer surface or end area of ​​the connecting rod 4. Their number can be set to two, three, or more depending on actual load-bearing requirements, and an even number can be selected to ensure symmetrical force distribution. Each slot 3 has a specific geometric profile, such as a trapezoidal, rectangular, or dovetail cross-section, which allows it to tightly engage with the fixed slot 5, preventing axial disengagement and circumferential sliding. The depth, width, and tilt angle of the slots 3 are determined through mechanical simulation analysis to ensure stable connection even when subjected to vibration, impact, and shear loads during flight. Furthermore, the surface of the slots 3 can be hardened or coated with a wear-resistant coating to improve durability.

[0046] The fixing rod 7 serves as a static support component connected to the carrier. One end is fixed to the carrier, and the other end has a fixing slot 5 that matches the slot 3. The fixing rod 7 is typically made of high-rigidity structural steel or engineering plastic, possessing good bending and torsional resistance. Its installation position must be precisely aligned with the drone's landing or docking trajectory to ensure that the slot can be smoothly inserted and accurately engaged during the connection process. The number and layout of the fixing slots 5 correspond one-to-one with the slots 3 on the connecting rod 4, and they are strictly matched in terms of spatial dimensions and tolerances, allowing for a certain amount of assembly error while avoiding situations where misalignment prevents locking.

[0047] The fitting relationship between the slot 3 and the fixed slot 5 constitutes the core locking mechanism of this embodiment. When the rotating rod 2 drives the connecting rod 4 to rotate around the axis to a preset angle, the slot 3 on the connecting rod 4 gradually aligns with and inserts into the fixed slot 5 on the fixed rod 7. After the two are interlocked, they form a circumferential limit, preventing further rotation, and at the same time, they generate a self-locking effect in the axial direction to prevent accidental separation. This multi-point snap-fit ​​structure not only improves the connection rigidity but also enhances the resistance to lateral forces, effectively coping with attitude disturbances and dynamic load changes that may occur during flight.

[0048] As an optional implementation, the mating interface between the slot 3 and the fixed slot 5 can be designed as a sloping guide structure, which allows the two components to automatically correct minor deviations during the initial contact stage, improving the success rate of docking. In another variation, the number of slots may not be exactly the same, but there must be at least one or more effective meshing areas to meet the basic locking requirements; or the slots can be set in a spiral distribution form, achieving progressive locking through continuous screwing, further improving the stability of the connection.

[0049] The connecting rod 4 serves as the motion actuator, completing spatial positioning under rotational drive; the slot 3 serves as the active locking element, moving synchronously with the connecting rod; the fixed rod 7 and its fixed slot 5 serve as a static reference, providing a stable locking reference surface. When the two rotate relative to each other into position, the slot structure immediately completes the engagement, realizing a rapid switch from "free state" to "locked state".

[0050] Through the above technical solution, this invention achieves efficient and reliable mechanical locking between the UAV and an external payload or fixed platform. Due to the design of multiple sets of locking slots cooperating with the fixed locking slots, the connection structure possesses high connection strength and shear resistance, maintaining a stable connection in complex flight environments and significantly reducing the risk of detachment during flight. Simultaneously, this locking method has a simple structure and rapid response, achieving self-locking without an additional power source, which helps simplify the system architecture, reduce energy consumption, and improve overall reliability. This solution is particularly suitable for applications requiring frequent payload changes or unattended operations, such as UAV inspection, logistics delivery, and emergency rescue, and has promising prospects for widespread application.

[0051] Based on the above embodiments, this embodiment incorporates an elastic element within the slot 3 for automatic closing and locking. This embodiment achieves adaptive locking without external control during the connection process by incorporating an elastic element within the slot 3. This design enhances the automation and reliability of the connection between the UAV and the fixed rod, making it particularly suitable for rapid docking missions in unmanned or remotely controlled scenarios. Due to continuous vibration and dynamic loads during flight, traditional mechanical locking structures are prone to loosening. However, the introduction of the elastic element provides pre-tightening force immediately after insertion, enhancing connection stability and effectively preventing accidental disengagement.

[0052] The slot 3 is a mechanical groove structure formed on the end or side wall of the connecting rod 4. Its shape and size are adapted to the fixing slot 5 on the fixing rod 7 to achieve interlocking positioning between the two. The slot 3 can be U-shaped, V-shaped, or polygonal in cross-section to meet the fitting requirements under different stress conditions. In terms of material, high-strength metal materials such as aluminum alloy or stainless steel can be used, or reinforced engineering plastics can be selected to reduce the overall weight while ensuring strength. The number of slots 3 can be set to a single or multiple arrays according to the load-bearing requirements to improve connection rigidity and shear resistance.

[0053] An elastic element is a component that can undergo elastic deformation under external force and return to its original shape after the external force is removed, thereby generating a restoring force. It is installed inside the slot 3 to drive the slot 3 back to the closed position. This elastic element can be specifically embodied in the form of a compression spring, torsion spring, spring sheet, rubber elastomer, or shape memory alloy element. For example, when a spring sheet structure is used, one end is fixed to the inner wall of the slot 3, and the other end extends and abuts against the movable locking block. Under normal conditions, the elastic force generated by the bending deformation of the spring sheet pushes the locking block to the closed position. When the rotating rod 2 drives the connecting rod 4 to press down and insert into the fixed rod 7, the edge of the fixed slot 5 pushes the locking block to overcome the elastic force and open. After complete alignment, the elastic element releases energy and quickly clamps the fixed slot 5, achieving self-locking.

[0054] In an optional embodiment, the elastic element is a pre-compressed helical spring, installed in the receiving cavity at the bottom of the slot 3, with its axis perpendicular to the slot opening plane. A slidable locking tongue mechanism is connected to the top of the spring. Under normal conditions, the spring pushes the locking tongue out of the slot opening, forming a constricted structure. When the connecting rod 4 aligns with the fixed rod 7, the guide slope of the fixed slot 5 compresses the locking tongue to retract. After insertion, the spring resets, and the locking tongue embeds into the corresponding recessed area of ​​the fixed slot 5, forming a bidirectional limiting effect and significantly improving the anti-pull-out performance.

[0055] In another embodiment, the elastic element is a bimetallic strip spring, which has high fatigue life and temperature adaptability, making it suitable for environments with alternating high and low temperatures. The spring is fixed to the inside of the slot 3 by riveting or welding, and its free end has a roller structure to reduce frictional resistance during insertion, while ensuring a rapid response and application of a stable clamping force when closed.

[0056] The slot 3, as the actuator of the locking action, determines the installation method and movement path of the elastic element through its structural form. The elastic element, in turn, gives the slot 3 the ability to actively close, transforming it from a passively cooperating structure into an intelligent interface unit with self-adjustment capabilities. Together, they constitute a purely mechanical automatic locking module that requires no additional drive source, simplifying the system structure and improving fault redundancy.

[0057] Through the above technical solution, because an elastic element is set inside the slot 3, the connecting rod 4 and the fixing rod 7 can automatically lock and close by relying on the restoring force of the elastic element after completing the relative rotation and insertion action, without relying on external power devices such as motors and solenoid valves for control; it solves the problem of low efficiency and poor reliability caused by the need for manual intervention or complex control systems in the connection process in the prior art; thus, it achieves the technical effects of improving the degree of automation of connection, enhancing anti-loosening performance, and reducing the operation threshold, and is particularly suitable for UAV systems that need to frequently change loads or operate in harsh environments.

[0058] Based on the above embodiments, the fixing rod 7 in this embodiment includes a horizontal fixing rod and several vertical support rods; one end of the vertical support rod is connected to the horizontal fixing rod, and the other end is connected to the carrier.

[0059] This embodiment provides a technical solution for enhancing the stability of the fixed end structure. By configuring the fixed rod 7 as a composite support structure consisting of a horizontal fixed rod and multiple vertical support rods, the rigidity and deformation resistance of the entire connection device under load are effectively improved. The horizontal fixed rod serves as the main docking platform, bearing the locking force from the UAV-side connecting rod 4 and the force of external loads. Several vertical support rods are arranged vertically, with one end connected to the lower part of the horizontal fixed rod and the other end extending to the surface of the carrier for a fixed connection, thus forming a multi-point support system that transmits the force step-by-step to the main structure of the carrier.

[0060] The horizontal fixing rod is the core load-bearing component of fixing rod 7, typically made of high-strength metal materials (such as aluminum alloy or stainless steel), possessing excellent bending and torsional resistance. Its cross-sectional shape can be circular, rectangular, or I-shaped, selected based on installation space and load requirements. For example, in weight-sensitive applications, lightweight, high-strength aerospace-grade aluminum alloy can be used, with an internal hollow design further reducing weight without compromising overall strength. The length of the horizontal fixing rod can be flexibly adjusted according to the actual docking width to accommodate drones or payload modules of different sizes, ensuring that connecting rod 4 can be smoothly inserted and engages with the locking device.

[0061] Several vertical support rods provide vertical mechanical support to the horizontal fixed rod, preventing it from bending, yielding, or even breaking under eccentric loads or dynamic impacts. The number of vertical support rods can be two or more, depending on the expected load and structural stability requirements. They can be symmetrically distributed on both sides or below the center of the horizontal fixed rod to achieve uniform load distribution. The axis of each vertical support rod is usually perpendicular to the plane of the horizontal fixed rod, but under specific installation conditions, they can also be inclined to form a triangular support structure, further enhancing resistance to lateral forces. The vertical support rods can be made of solid cylindrical rods, square tubes, or other structural steel components. The connection method between them and the horizontal fixed rod includes welding, bolting, or integral molding, depending on the manufacturing process and ease of maintenance. For example, in situations requiring frequent disassembly or replacement, quick-release threaded connectors can be used for detachable assembly, facilitating transportation and maintenance.

[0062] The other end of the vertical support rod is connected to the carrier. This connection point must have sufficient contact area and connection strength to ensure effective force transmission. The carrier can be a ground equipment bracket, a mobile vehicle platform, a building structure, or a dedicated load base, etc. The connection method can be achieved through pre-embedded bolts, snap-fit ​​structures, or embedded slots, ensuring that the vertical support rod is firmly anchored to the carrier. In some embodiments, rubber pads or shock-absorbing elements can also be added to the end of the vertical support rod to mitigate the vibration and impact generated during flight takeoff and landing, thereby improving system durability.

[0063] The components are mechanically connected to form a stable frame structure. The horizontal fixed rod serves as the upper load-bearing platform and directly participates in the locking engagement with the connecting rod 4. The vertical support rod serves as the lower support component, converting the concentrated load from above into a distributed force that is transmitted to the carrier, avoiding localized stress concentration. The two work together to give the entire fixed rod 7 higher structural redundancy and load-bearing safety, making it particularly suitable for UAV systems that carry heavy mission equipment (such as high-definition cameras, LiDAR, or robotic arms).

[0064] Through the above technical solution, the overall structural rigidity of the fixed rod 7 is significantly enhanced by adopting a multi-point support structure consisting of a horizontal fixed rod and several vertical support rods. This enables it to stably bear the connection load from the UAV side under complex flight conditions. The structure has a reasonable layout and a clear force path, effectively reducing the risk of plastic deformation or fatigue fracture of a single rod due to excessive force. Furthermore, this configuration supports modular expansion, allowing for the addition or reduction of the number of support rods or adjustment of the spatial arrangement according to different application scenarios, thus improving the adaptability and engineering practicality of the device. Therefore, this embodiment solves the technical problems of easy deformation and poor stability of fixed connection components in the prior art, providing a strong guarantee for the safe and reliable operation of the UAV rapid connection system.

[0065] Based on the above embodiments, this embodiment provides a fixing slot 5 on the horizontal fixing rod. The horizontal fixing rod is a component of the fixing rod 7, extending horizontally as the main load-bearing structure, and is used to connect and lock with the connecting rod 4. This horizontal fixing rod is typically made of high-strength metal materials, such as aluminum alloy or stainless steel, to ensure sufficient rigidity and fatigue resistance, capable of withstanding the dynamic loads generated by vibration, acceleration, and external airflow disturbances during the drone's flight. Its cross-sectional shape can be circular, rectangular, or polygonal, specifically designed and optimized according to structural strength requirements and assembly space, and its surface can be treated with anti-corrosion measures to improve durability.

[0066] The fixed slot 5 is located on the horizontal fixed rod and serves as a key mating component of the locking device. It engages with the slot 3 on the connecting rod 4 to achieve rapid mechanical locking. The geometry of the fixed slot 5 is adapted to the slot 3; for example, it can be designed as a U-shaped, dovetail-shaped, or trapezoidal groove to ensure smooth engagement and prevent axial dislodgement after rotational alignment. The fixed slot 5 can be directly machined onto the horizontal fixed rod body, or it can be added by welding, screwing, or interference fit, facilitating replacement or maintenance according to different application scenarios.

[0067] In one optional embodiment, there are multiple fixing slots 5, which are spaced apart along the length of the horizontal fixing rod, allowing the connecting rod 4 to be locked at different positions, thereby adapting to different working postures or center of gravity adjustment requirements. In addition, the inner wall of the fixing slot 5 may be provided with a wear-resistant coating or an elastic liner to reduce frictional damage during insertion and removal and improve locking stability.

[0068] Through the above technical solution, the fixed slot 5 is integrated into the horizontal fixed rod, so that the locking function structure and the main load-bearing component are integrated into one, which simplifies the overall structural layout while ensuring the reliability of the connection. Since the locking point is directly located on the main beam structure—the horizontal fixed rod—on the force path, the load transfer efficiency and the mechanical rationality of the connection node are effectively improved. At the same time, this design is conducive to standardized production and modular assembly, enhancing the maintainability and engineering practicality of the system.

[0069] Based on the above embodiments, this embodiment provides a carrier slot 6 on the carrier; the other end of the vertical support rod is connected to the carrier slot 6.

[0070] Through the above technical solution, this invention achieves an optimized design of the connection structure between the vertical support rod and the carrier, improving the overall assembly efficiency and structural stability of the device. Specifically, the technical means involved in this embodiment mainly revolve around the setting of the carrier slot 6 and its connection relationship with the vertical support rod, aiming to solve problems such as complex installation, low positioning accuracy, and inconvenient disassembly and assembly in existing UAV payload connection systems. Especially in application scenarios requiring frequent changes to mission payloads or rapid on-site deployment, traditional bolt fixing or welding connection methods are difficult to meet the requirements of high efficiency and reconfigurability. This embodiment effectively improves these shortcomings by introducing a dedicated mechanical snap-fit ​​structure.

[0071] In this embodiment, the carrier is provided with a carrier slot 6, which is a recessed limiting structure machined on the carrier body. Its cross-section can be rectangular, dovetail-shaped, or T-shaped, and can be selected as a rectangular slot structure with a guide bevel to facilitate the insertion and alignment of the vertical support rod. The inner wall surface of the carrier slot 6 is smooth to reduce frictional resistance during insertion and removal. At the same time, an elastic pressure plate or locking mechanism can be provided at the slot opening to realize the automatic locking function after insertion.

[0072] The vertical support rod is a crucial component of the fixing rod 7. One end connects to the horizontal fixing rod, while the other end extends into the carrier slot 6 for fixation. The vertical support rod is typically made of high-strength, lightweight materials, such as 6061-T6 aluminum alloy or carbon fiber reinforced composite materials, with a diameter ranging from 15mm to 30mm and a length adjustable according to the actual installation height requirements, generally from 200mm to 500mm. Its end shape is adapted to the carrier slot 6, for example, designed as a flat head, a cylindrical head with a boss, or a plug with a guide cone angle, ensuring smooth insertion and achieving axial limiting and radial constraint. The vertical support rod and the carrier slot 6 are connected using a tool-less plug-in method, eliminating the need for additional screws, pins, or clamps, significantly improving on-site work efficiency.

[0073] The carrier slot 6 serves as the receiving end, providing a spatial positioning reference and mechanical constraints, while the vertical support rod acts as the insertion end, performing the connection action. Together, they form a quick-detachable mechanical interface. When the operator aligns the vertical support rod vertically and presses it into the carrier slot 6, the limiting surface inside the slot restricts the support rod's freedom of movement in the X and Y directions, while the bottom shoulder or additional locking element prevents it from coming out in the Z direction, thus forming a stable three-dimensional fixed state. This connection method not only simplifies the assembly process but also facilitates later maintenance and component replacement—for example, if a vertical support rod deforms or wears, it can be directly pulled out of the slot and replaced with a new one without disassembling the entire fixed rod structure or reprocessing the carrier.

[0074] As an optional embodiment, multiple carrier slots 6 can be provided, evenly distributed at different positions on the top surface of the carrier, forming an array-type support structure with multiple vertical support rods, suitable for stable installation of large-sized or high-center-of-gravity loads. Alternatively, the carrier slots 6 can be designed as a sliding adjustable structure, by creating elongated through slots on the carrier and using fastening bolts to fine-tune the lateral position of the support rods, further improving the adaptability and versatility of the device. In another variation, magnetic elements or Hall sensors can be integrated at the ends of the vertical support rods. When fully inserted into the carrier slot 6, a signal feedback is triggered to electrically confirm the connection status, providing a basis for subsequent automated control.

[0075] Through the above technical solution, this invention achieves a rapid and reliable connection between the vertical support rod and the carrier. Because of the dedicated carrier slot 6, the vertical support rod can be installed through a simple plug-in action, solving the problems of cumbersome assembly and long time consumption in traditional connection methods. Furthermore, the slot structure itself has good guiding and limiting capabilities, reducing alignment errors caused by human operation and enhancing the structural rigidity and vibration resistance of the connection node. This achieves the technical effect of improving the overall stability of the device and supporting modular rapid deployment. This design is particularly suitable for UAV applications that require frequent load changes or field mobile deployment, aligning with the trend of modern unmanned systems towards intelligence and reconfigurability.

[0076] Based on the above embodiments, in this embodiment, the other end of the vertical support rod is detachably connected to the carrier slot 6. The detachable connection between the vertical support rod and the carrier slot allows for stable assembly and easy separation without relying on welding, riveting, or permanent fixing. This structural design not only preserves connection strength and stability but also significantly improves the flexibility of component replacement, maintenance, and task adaptation.

[0077] The vertical support rod is a key force-transmitting component used to connect the horizontal fixed rod and the carrier. One end of the vertical support rod is connected to the horizontal fixed rod, and the other end extends into or inserts into the carrier's slot 6 to form a mechanical fit. This support rod is typically made of high-strength metal materials (such as aluminum alloy, stainless steel, or titanium alloy), possessing sufficient compressive and bending resistance to withstand the dynamic loads generated during UAV docking and the vibrations and impacts during flight. Its cross-sectional shape can be circular, square, or polygonal, selected based on load-bearing requirements and installation space; its length can be customized according to the actual application scenario to adapt to installation platforms or operating environments of different heights.

[0078] The carrier slot 6 is a positioning and limiting structure located on the carrier, used to accommodate and fix the end of the vertical support rod. The slot has an internal cavity that matches the shape of the support rod, and connection can be achieved through interference fit, elastic clamping, or mechanical locking. To achieve the "detachable" function, the slot structure can employ various connection mechanisms such as quick-release buckles, pin locking, threaded engagement, spring clamping, or magnetic coupling. For example, in one optional embodiment, the carrier slot 6 is equipped with an elastic clamp and a manual release button. When the vertical support rod is inserted, the clamp automatically opens and springs back to engage the rod, completing the locking; pressing the release button releases the constraint, enabling quick disassembly. In another variation, a threaded connection with a locking nut can be used, ensuring connection reliability and facilitating disassembly and assembly during regular maintenance.

[0079] The aforementioned connection method allows users to install and remove the vertical support rods without special tools or with only simple tools. This brings multiple advantages to the system: Firstly, support rods of different lengths, stiffnesses, or materials can be replaced according to different task requirements. For example, a thicker support rod can be selected to enhance stability in high wind load environments, while carbon fiber composite rods can be used to reduce overall weight in lightweight scenarios. Secondly, when a support rod wears, deforms, or is damaged due to long-term use, that component can be replaced individually without scrapping the entire fixed rod assembly or carrier structure, effectively reducing maintenance costs and extending the system's service life.

[0080] Furthermore, this detachable connection structure aligns perfectly with the modular design concept of the overall device. By defining the dimensions, tolerances, and connection methods of the support rod and slot through standardized interfaces, cross-platform versatility and mass production compatibility can be achieved, further promoting the industrial application of drone connection systems.

[0081] Through the above technical solution, this invention achieves a functional upgrade in the connection relationship between the vertical support rod and the carrier. Because it adopts a detachable connection method, it solves the problems of difficult maintenance, poor task adaptability, and non-replaceable components caused by traditional fixed connections, thereby achieving the technical effects of improving equipment maintainability, enhancing task reconfiguration capabilities, and reducing total lifecycle costs. This embodiment fully demonstrates the innovative value of this invention in structural decoupling and system sustainability.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A quick-connect locking device for unmanned aerial vehicles (UAVs), characterized in that, Includes drone side devices and mounting rods (7); The UAV side device includes a rotating rod (2) and a connecting rod (4) connected to the UAV; one end of the rotating rod (2) is connected to the UAV, and the other end is connected to the connecting rod (4); One end of the fixed rod (7) is connected to the carrier, and the other end is connected to the connecting rod (4); the connecting rod (4) and the fixed rod (7) are respectively provided with corresponding locking devices; when the rotating rod (2) drives the connecting rod (4) to rotate, the locking devices of the connecting rod (4) and the fixed rod (7) cooperate to lock.

2. The UAV quick-connect locking device according to claim 1, characterized in that, The rotating rod (2) is a telescopic structure.

3. The UAV quick-connect locking device according to claim 1, characterized in that, The connecting rod (4) is detachably connected to the rotating rod (2).

4. The UAV quick-connect locking device according to claim 1, characterized in that, The connecting rod (4) is provided with several slots (3), and the fixing rod (7) is provided with several fixing slots (5); the slots (3) and the fixing slots (5) are adapted to each other to form the locking device.

5. A quick-connect locking device for unmanned aerial vehicles according to claim 4, characterized in that, The slot (3) is equipped with an elastic element for automatic closing and locking.

6. The UAV quick-connect locking device according to claim 4, characterized in that, The fixing rod (7) includes a horizontal fixing rod and several vertical support rods; one end of the vertical support rod is connected to the horizontal fixing rod, and the other end is connected to the carrier.

7. A quick-connect locking device for unmanned aerial vehicles according to claim 6, characterized in that, The horizontal fixing rod is provided with a fixing slot (5).

8. A quick-connect locking device for unmanned aerial vehicles according to claim 6, characterized in that, The carrier is provided with a carrier slot (6); the other end of the vertical support rod is connected to the carrier slot (6).

9. A quick-connect locking device for unmanned aerial vehicles according to claim 8, characterized in that, The other end of the vertical support rod is detachably connected to the carrier slot (6).

10. A quick-connect locking device for unmanned aerial vehicles according to claim 8, characterized in that, The carrier slot (6) is located at the top of the carrier.

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