An omnidirectional charging system for drones

Abstract

This invention discloses an omnidirectional charging system for unmanned aerial vehicles (UAVs), relating to the field of UAV technology. The system includes a landing pad with a conical groove on its upper surface, the bottom of which communicates with the interior of the landing pad; a UAV with a conical bottom frame that matches the taper of the groove; and a ring-type connector mechanism for switching the electrical connection between the landing pad and the UAV. The ring-type connector mechanism includes a ring-shaped plug located at the bottom of the UAV frame and a connector mounted at the bottom of the conical groove. A locking component is provided on the UAV frame to engage or disengage the ring-shaped plug and connector, enabling omnidirectional charging of the UAV. Through the matching design of the conical groove and the conical structure at the bottom of the UAV, and the ring-shaped plug and connector of the ring-type connector mechanism, this invention allows the UAV to land at any angle and achieve a reliable charging connection, solving the problems of high precision and high failure rate associated with traditional directional charging systems.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically to an omnidirectional charging system for UAVs. Background Technology

[0002] With the rapid development of drone technology, drones are increasingly widely used in aerial photography, logistics delivery, agricultural plant protection, environmental monitoring, and emergency rescue. The endurance and charging efficiency of drones have become key factors restricting their further promotion and application. Currently, most drones on the market use lithium batteries as their primary energy source. However, limited by the technological bottlenecks in battery capacity and energy density, the single flight time of drones is usually short, and the frequent battery replacements or charging requirements significantly reduce the operational efficiency and mission continuity of drones. To solve this problem, automatic charging technology for drones has emerged, aiming to achieve rapid energy replenishment of drones through an intelligent charging system, reducing manual intervention and improving operational efficiency.

[0003] Current drone charging methods primarily rely on automated charging helipads. As an advanced solution, these helipads typically require the drone to land precisely at a specific location on the helipad, establishing a charging connection via mechanical or electrical connectors. These connectors are usually highly directional, meaning the drone must be positioned at a specific angle to ensure accurate docking. This places extremely high demands on the drone's flight control technology, positioning accuracy, and environmental adaptability. Furthermore, current drones cannot switch between tethered and free-flight modes. Summary of the Invention

[0004] The purpose of this invention is to provide an omnidirectional charging system for drones, which solves the problem that existing drone charging connectors are usually highly directional, meaning that drones must be connected at a specific angle.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, the present invention comprising:

[0006] A helipad, wherein the upper surface of the helipad has a conical groove, and the bottom of the conical groove is connected to the interior of the helipad;

[0007] The drone has a tapered bottom frame that is adapted to the taper of a tapered groove.

[0008] A ring-type connector mechanism is used to switch the electrical connection state between the helipad and the drone. The ring-type connector mechanism includes a ring-type plug located at the bottom of the drone frame and a connector installed at the bottom of a conical groove. The drone frame is provided with a locking component, which is used to mate or release the ring-type plug and the connector to achieve omnidirectional charging of the drone.

[0009] A parachute mechanism is located at the bottom of the connector. The parachute mechanism is installed and removed from the helipad via an installation mechanism. The parachute mechanism includes a parachute and a trigger assembly for opening the parachute. The trigger assembly includes a locking bracket and multiple elastic blocks fixed to the lower side of the UAV frame. The multiple elastic blocks form a ring structure. The locking bracket is locked to the corresponding elastic blocks. The locking bracket is connected to the parachute's switch cord via a trigger cord. When the connector detaches from the UAV frame, the trigger cord pulls out and opens the parachute, and then the arc-shaped block disengages from the elastic blocks.

[0010] Preferably, the locking assembly includes a motor mounted on the frame of the drone and an upper threaded hole opened at the bottom of the frame of the drone. A screw is internally threaded into the upper threaded hole. A polygonal through hole is opened at the middle position of the screw. A polygonal rod is installed at the output end of the motor and extends to the polygonal through hole. A lower threaded hole adapted to the screw is opened at the upper end of the connector.

[0011] Preferably, the connector has a ring-shaped connector, and the ring-shaped plug is adapted to the ring-shaped connector. The ring-shaped connector is electrically connected to the power supply of the helipad via a wire. The wire is wound up inside the helipad by a winding mechanism. The UAV has the following configuration:

[0012] Charging mode: The mounting mechanism fixes the parachute mechanism, and the locking assembly connects the ring plug to the ring connector to enable charging of the drone;

[0013] Tethered mode: The installation mechanism releases the parachute mechanism, the locking assembly connects the ring plug to the ring connector, and the cable retraction mechanism releases the power cord to achieve continuous power supply to the drone;

[0014] Free Flight Mode: The locking assembly loosens the ring plug from the ring connector to allow the drone to fly while disconnected from charging.

[0015] Preferably, the parachute mechanism further includes a parachute compartment installed at the bottom of the connector, the side of the parachute compartment having a release hole, the parachute being placed inside the compartment, and the triggering component being used to pull the parachute out of the compartment and open it, so as to prevent the connector from falling and being damaged when switching from tethered mode to free flight mode in mid-air.

[0016] Preferably, the triggering component further includes a fixed semicircular block fixed to the outside of the parachute compartment and a movable semicircular block detachably connected to the fixed semicircular block, and the lower end of the snap-fit ​​bracket is fixedly connected to the movable semicircular block. The snap-fit ​​bracket includes a connecting rod fixedly connected to the movable semicircular block and an arc-shaped circular block fixed to the upper end of the connecting rod. The arc-shaped circular block is snap-fitted to an elastic snap-fit ​​block at a corresponding position.

[0017] Preferably, the connecting rod and the movable semicircular block share an installation inner hole, a crossbar is fixed in the installation inner hole, a spring is sleeved inside the crossbar, a push block is provided on the side of the spring near the parachute compartment, an arc-shaped push block is slidably sleeved at the end of the crossbar, the outer end of the trigger rope is wound around the crossbar between the push block and the arc-shaped push block, the middle part of the trigger rope passes through and is fixed to the arc-shaped push block, and the inner end of the trigger rope is connected and fixed to the parachute's switch rope.

[0018] Preferably, the fixed semicircular block and the movable semicircular block are detachably connected by a snap-fit ​​structure. The snap-fit ​​structure includes vertical slots opened at both ends of the fixed semicircular block and snap strips fixed at both ends of the movable semicircular block, and the snap strips are snapped into the slots.

[0019] Preferably, the installation mechanism includes two symmetrically arranged L-shaped rods, and the vertical cross-section of the L-shaped rods is circular. The outer surfaces of the fixed semicircular block and the movable semicircular block are provided with arc-shaped grooves that are adapted to the side of the L-shaped rods. The two arc-shaped grooves are driven to move laterally by a pusher to fix or release the parachute mechanism.

[0020] Preferably, a center positioning mechanism for center positioning of the UAV is provided in the conical groove. The center positioning mechanism includes an annular groove provided in the conical groove, an annular airbag provided in the annular groove, the annular airbag expanding and contracting in the transverse direction, the annular airbag being connected to an external vacuum pump, and multiple evenly distributed positioning blocks fixed on the inner wall of the annular airbag. The frame of the UAV has a notch.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Through the adaptation design of the conical groove and the conical structure at the bottom of the drone, as well as the ring plug and ring connector of the ring connector mechanism, the drone can land at any angle and achieve a reliable charging connection, solving the problems of high precision and high failure rate of traditional directional charging docking.

[0023] 2. This system has charging mode, tethered mode and free flight mode to meet the needs of drones in different scenarios (such as short-term charging, long-term hovering or free flight). The locking component and the line retraction mechanism enable seamless switching of modes, which enhances the diversity of application scenarios.

[0024] 3. When the parachute mechanism switches from tethered mode to free flight mode, the parachute automatically deploys via a trigger component to ensure the connector descends slowly, avoiding damage caused by falling from a height and extending the equipment's service life.

[0025] 4. The central positioning mechanism utilizes a ring-shaped airbag and positioning block, and controls the expansion and rebound of the airbag through a vacuum pump to precisely adjust the position of the drone in the conical groove, ensuring efficient docking of the ring plug and the ring connector, and improving charging stability. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the UAV of the present invention when it is parked on the helipad;

[0027] Figure 2 This is a three-dimensional structural diagram of the free flight mode of the UAV of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the UAV of the present invention;

[0029] Figure 4 This is a half-section three-dimensional structural diagram of the UAV of the present invention;

[0030] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle;

[0031] Figure 6 This is a schematic diagram of the connection between the ring-type connector mechanism and the parachute mechanism of the present invention;

[0032] Figure 7 for Figure 6 A schematic diagram of a half-section three-dimensional structure;

[0033] Figure 8 This is a three-dimensional structural diagram of the ring-type joint mechanism and the installation mechanism in this invention;

[0034] Figure 9 This is a three-dimensional structural diagram of the tethered mode of the UAV according to the present invention.

[0035] The numbers in the diagram represent:

[0036] 1-Landing pad; 11-Conical groove; 2-UAV; 3-Center positioning mechanism; 31-Annular groove; 32-Annular airbag; 33-Positioning block; 34-Notch; 4-Ring connector mechanism; 41-Ring plug; 42-Ring connector; 43-Connector; 44-Lower threaded hole; 45-Wire; 46-Motor; 47-Polygonal rod; 48-Screw; 49-Upper threaded hole; 5-Parachute mechanism; 51-Parachute compartment; 52-Parachute; 53-Trigger assembly; 531-Fixed semicircular block; 532-Modible semicircular block; 533-Connecting rod; 534-Arc-shaped circular block; 535-Elastic locking block; 536-Horizontal bar; 537-Arc-shaped push block; 538-Trigger rope; 539-Spring; 5310-Push block; 61-L-shaped rod; 62-Arc-shaped groove; 63-Pushing component; 7-Reel-in mechanism. Detailed Implementation

[0037] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0038] Example 1: This example provides a technical solution: an omnidirectional charging system for unmanned aerial vehicles (UAVs), such as... Figures 1 to 4 As shown, it includes a helipad 1, a drone 2, a ring-type joint mechanism 4, and a central positioning mechanism 3.

[0039] The helipad 1 is an intelligent platform integrating take-off, landing, charging, storage, and data interaction, primarily used to support the automated operation of the drone 2. Its core functions include providing a flat and stable take-off and landing surface to ensure safe take-off and landing of the drone; it can also be equipped with protective covers or cabins to protect the drone from environmental interference such as wind, rain, and dust; it supports data transmission between the drone 2 and the helipad 1, such as flight logs or mission commands, and enables remote monitoring and management via a network. Other structures and functions are consistent with similar products on the market. However, the difference between this embodiment and commercially available helipad 1 is that the upper surface of the helipad 1 has a conical groove 11, and the bottom of the conical groove 11 is connected to the interior of the helipad 1.

[0040] The bottom of the frame of the drone 2 is tapered and is adapted to the taper of the tapered groove 11.

[0041] The ring connector mechanism 4 is used to switch the electrical connection state between the helipad 1 and the drone 2, and to achieve omnidirectional charging of the helipad 1 and the drone 2 without the need for precise adjustment of the drone's placement angle. The ring connector mechanism 4 includes a ring plug 41 located at the bottom of the drone 2's frame and a connector 43 installed at the bottom of the conical groove 11. The ring plug 41 is electrically connected to the drone 2's battery. The connector 43 has a ring connector 42, which is electrically connected to the power supply of the helipad 1 via a wire 45. The ring plug 41 and the ring connector 42 are compatible, and both the ring plug 41 and the ring connector 42 can be selected from commercially available models. The drone 2's frame is equipped with a locking component, which is used to mate or release the ring plug 41 and the ring connector 42. Since the ring plug 41 and the ring connector 42 can be plugged in from any angle for charging, omnidirectional charging of the drone 2 is achieved.

[0042] The locking assembly includes a motor 46 mounted on the frame of the drone 2 and an upper threaded hole 49 opened at the bottom of the frame of the drone 2. A screw 48 is internally threaded into the upper threaded hole 49. A polygonal through hole is opened in the middle of the screw 48. A polygonal rod 47 is installed at the output end of the motor 46 and extends to the polygonal through hole. A lower threaded hole 44 adapted to the screw 48 is opened at the upper end of the connector 43.

[0043] In use, align the center of the drone 2 with the center of the conical groove 11, then lower the drone 2 downwards so that the ring plug 41 aligns with the ring connector 42. Then, run the motor 46, which will drive the polygonal rod 47 to rotate. The polygonal rod 47 will drive the screw 48 to rotate synchronously. With the screw 48 engaging with the upper threaded hole 49, the screw 48 will rotate and move vertically. When the screw 48 rotates forward and moves downwards, it will connect with the lower threaded hole 44, thus fixing the connector 43 to the frame of the drone 2 and preventing it from falling off. When the screw 48 rotates in the opposite direction and moves upwards, it will disengage from the lower threaded hole 44. Under the weight of the connector 43 or the takeoff of the drone 2, the ring plug 41 will disconnect from the ring connector 42.

[0044] To improve the alignment accuracy of the ring plug 41 and the ring connector 42, a center positioning mechanism 3 is provided in the conical groove 11 to center the drone 2. The center positioning mechanism 3 includes an annular groove 31 provided in the conical groove 11, an annular airbag 32 is provided in the annular groove 31, the annular airbag 32 expands and contracts in the horizontal direction, the annular airbag 32 is connected to an external vacuum pump, and multiple evenly distributed positioning blocks 33 are fixed on the inner ring wall of the annular airbag 32. The frame of the drone 2 has a notch 34, and the side wall of the notch 34 is vertically set.

[0045] When the gas inside the annular airbag 32 is extracted by the vacuum pump, the air pressure inside the annular airbag 32 will decrease, and the inner ring of the annular airbag 32 will expand outward, causing the multiple positioning blocks 33 to spread out evenly. When the annular airbag 32 is emptied by the external vacuum pump, the inner ring of the annular airbag 32 will rebound inward, and the multiple positioning blocks 33 will come closer together, forming a ring with a near-circular structure. Therefore, when the drone 2 descends into the conical groove 11, the notch 34 and the positioning blocks 33 are on the same horizontal plane (at this time, the drone 2 has not landed at the charging position). Due to the rebound of its own elasticity, the annular airbag 32, under the push of the ring with the near-circular structure formed by the multiple positioning blocks 33, will position the drone 2 at the center of the conical groove 11, ensuring the smooth docking of the ring plug 41 and the ring connector 42.

[0046] Example 2 is a further optimization based on Example 1. The parts that are the same as the aforementioned technical solutions will not be repeated here. Figure 1 and Figure 9 As shown, in order to enable the drone 2 to have diverse flight capabilities, this embodiment further employs the following specific configuration:

[0047] A parachute mechanism 5 is provided at the bottom of the connector 43. The function of the parachute mechanism 5 is to allow the connector 43 to fall slowly when it detaches in mid-air, so as to ensure that the connector 43 will not be damaged by the fall. The parachute mechanism 5 is installed and removed from the inside of the landing pad 1 through the installation mechanism, so as to fix the ring connector mechanism 4. The wire 45 is wound up and set inside the landing pad 1 through the wire winding mechanism 7. The wire 45 is electrically connected to the power supply inside the landing pad 1. The wire 45 has a certain length to ensure that the drone 2 can fly to a higher altitude. The wire winding mechanism 7 can be a rotating shaft and a motor that drives the rotating shaft. The wire winding mechanism 7 can also be a suitable winder on the market to evenly wind up the wire 45.

[0048] During operation, drone 2 has the following modes:

[0049] Charging mode: The installation mechanism fixes the parachute mechanism 5 inside the landing pad 1. The locking component connects the ring plug 41 to the ring connector 42, allowing the drone 2 to be installed on the landing pad 1 for charging. This also allows for the storage of the drone 2. Figure 1 As shown;

[0050] Tethered Mode: The installation mechanism releases the parachute mechanism 5, and the locking assembly mates the ring plug 41 with the ring connector 42. Therefore, the parachute mechanism 5 will be fixedly connected to the drone 2. The cable reel mechanism 7 releases the power cable 45. After the power cable 45 is unfurled, the drone 2 can continue to be powered even when it is in mid-air. Figure 9 As shown;

[0051] Free Flight Mode: The locking assembly releases the ring plug 41 from the ring connector 42, allowing the drone 2 to fly while disconnected from charging, as shown below. Figure 2 As shown.

[0052] Furthermore, the parachute mechanism 5 includes a parachute compartment 51 installed at the bottom of the connector 43. The side of the parachute compartment 51 has a release hole. A parachute 52 is placed inside the compartment 51. The structure of the parachute 52 is the same as that of parachutes on the market, only smaller in size, or an existing parachute of a suitable size is selected. A trigger component 53 is provided on the outside of the parachute compartment 51. The upper end of the trigger component 53 is detachably connected to the frame of the drone 2. It can only be disconnected when a certain distance force is generated between the trigger component 53 and the drone 2. The trigger component 53 is used to pull the parachute 52 out of the compartment 51 and open it, so as to prevent the connector 43 from falling and being damaged when switching from tethered mode to free flight mode in mid-air.

[0053] The triggering component 53 includes a fixed semicircular block 531 fixed to the outside of the parachute compartment 51 and a movable semicircular block 532 detachably connected to the fixed semicircular block 531. When the fixed semicircular block 531 and the movable semicircular block 532 are connected, their outer surfaces form a circular structure. One side of the movable semicircular block 532 is fixed with an arc-shaped circular block 534 via a connecting rod 533. The connecting rod 533 and the arc-shaped circular block 534 combine to form a snap-fit ​​bracket. Multiple elastic snap-fit ​​blocks 535 are fixed to the lower side of the frame of the UAV 2, and the multiple elastic snap-fit ​​blocks 535 form a ring structure. The arc-shaped circular block 534 snaps into and is fixed with the corresponding elastic snap-fit ​​block 535. Therefore, no matter which direction the arc-shaped circular block 534 faces, it can be inserted into the corresponding elastic snap-fit ​​block 535 for snap-fit. Furthermore, since the arc-shaped block 534 itself has a certain curvature, when it is locked onto the corresponding elastic block 535, the arc-shaped block 534 cannot rotate or shift at any angle. The connecting rod 533 and the switch rope of the parachute 52 are connected through the trigger rope 538. When the connector 43 detaches from the frame of the drone 2, the connecting rod 533 will exert a certain pulling force on the trigger rope 538 due to the locking connection between the arc-shaped block 534 and the elastic block 535. This pulling force can pull the parachute 52 out of the parachute compartment 51 and open it until the connector 43 is a certain distance away from the drone 2. Then the arc-shaped block 534 will disengage from the elastic block 535, allowing the parachute 52 to open smoothly. The connector 43 can then descend slowly to avoid damage from a fall.

[0054] Furthermore, the structure of the elastic block 535 includes a C-shaped arc block with its opening facing downwards, and both ends of the C-shaped arc block have outwardly expanding inclined portions. When the arc-shaped block 534 moves upwards, the arc-shaped block 534 will expand the inclined portions outwards, allowing the arc-shaped block 534 to smoothly enter the C-shaped arc block, thus softly fixing the arc-shaped block 534. When the arc-shaped block 534 is pulled downwards, the arc-shaped block 534 will squeeze the two sides of the C-shaped arc block outwards, causing the C-shaped arc block to expand outwards, and the arc-shaped block 534 will smoothly detach from the elastic block 535.

[0055] Furthermore, the connecting rod 533 and the movable semicircular block 532 share an installation inner hole, in which a crossbar 536 is fixed. The inner end of the crossbar 536 extends into an installation through hole. When the movable semicircular block 532 is engaged with the fixed semicircular block 531, the inner end of the crossbar 536 can extend into the cavity of the parachute compartment 51. A spring 539 is sleeved inside the crossbar 536. A push block 5310 is provided on the side of the spring 539 near the parachute compartment 51. An arc-shaped push block 537 is slidably sleeved at the end of the crossbar 536. An arc-shaped push block 537 is formed on the inner wall of the movable semicircular block 532. The curved push block 537 is located within the curved groove, and the curvature of the curved push block 537 matches the curvature of the parachute compartment 51. The outer end of the trigger rope 538 is wrapped around the crossbar 536 between the push block 5310 and the curved push block 537. The middle part of the trigger rope 538 is fixed through the curved push block 537. The inner end of the trigger rope 538 is connected and fixed to the switch rope of the parachute 52. It should be noted that when the trigger rope 538 is wrapped, a little length needs to be reserved. In addition, the trigger rope 538 should not be wrapped too tightly on the crossbar 536 to ensure its smooth release.

[0056] Furthermore, the fixed semicircular block 531 and the movable semicircular block 532 are detached and connected by a snap-fit ​​structure. The snap-fit ​​structure includes vertical slots opened at both ends of the fixed semicircular block 531 and snap strips fixed at both ends of the movable semicircular block 532. The snap strips are snapped into the slots, and the bottom of the slots is closed.

[0057] When the motor 46 is running, causing the screw 48 to move upward, the screw 48 separates from the lower threaded hole 44. The connector 43 will fall downward due to its own weight. At this time, the fixed semicircular block 531 and the movable semicircular block 532 will make relative vertical displacement, and the locking strip will disengage from the slot. Under the force of the spring 539, the connector 43 will be pushed to one side, allowing it to quickly move away from the drone 2. At the same time, the arc-shaped push block 537 and the trigger rope 538 are pushed away from the crossbar 536, and the trigger rope 538 will quickly spread out until it is tightened. The parachute 52 will then open, buffering the fall of the connector 43. Subsequently, under the traction of the drone 2, the arc-shaped block 534 separates from the elastic locking block 535. Therefore, it saves storage space for the trigger rope 538 while allowing it to spread out quickly.

[0058] The mounting mechanism includes two symmetrically arranged L-shaped rods 61, and the vertical cross-section of the L-shaped rods 61 is circular. The outer surfaces of the fixed semicircular block 531 and the movable semicircular block 532 are provided with arc-shaped grooves 62 that are adapted to the side of the L-shaped rods 61. The two arc-shaped grooves 62 are driven to move laterally by the pusher 63 to fix or release the parachute mechanism 5. The pusher 63 can be a conventional bidirectional screw synchronous push structure or two straight rod motors, which respectively push the two L-shaped rods 61 to move.

[0059] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. An omnidirectional charging system for unmanned aerial vehicles (UAVs), characterized in that, include: A helipad, wherein the upper surface of the helipad has a conical groove, and the bottom of the conical groove is connected to the interior of the helipad; The drone has a tapered bottom frame that is adapted to the taper of a tapered groove. A ring-type connector mechanism is used to switch the electrical connection state between the helipad and the drone. The ring-type connector mechanism includes a ring-type plug located at the bottom of the drone frame and a connector installed at the bottom of a conical groove. The drone frame is provided with a locking component, which is used to mate or release the ring-type plug and the connector to achieve omnidirectional charging of the drone. A parachute mechanism is located at the bottom of the connector. The parachute mechanism is installed and removed from the helipad via an installation mechanism. The parachute mechanism includes a parachute and a trigger assembly for opening the parachute. The trigger assembly includes a locking bracket and multiple elastic blocks fixed to the lower side of the UAV frame. The multiple elastic blocks form a ring structure. The locking bracket is locked to the corresponding elastic blocks. The locking bracket is connected to the parachute's switch cord via a trigger cord. When the connector detaches from the UAV frame, the trigger cord pulls out and opens the parachute, and then the arc-shaped block disengages from the elastic blocks.

2. The omnidirectional charging system for unmanned aerial vehicles as described in claim 1, characterized in that, The locking assembly includes a motor mounted on the frame of the drone and an upper threaded hole opened at the bottom of the frame of the drone. A screw is internally threaded into the upper threaded hole. A polygonal through hole is opened at the middle position of the screw. A polygonal rod is installed at the output end of the motor and extends to the polygonal through hole. A lower threaded hole adapted to the screw is opened at the upper end of the connector.

3. The omnidirectional charging system for unmanned aerial vehicles as described in claim 1, characterized in that, The connector has a ring-shaped connector, and the ring-shaped plug is adapted to the ring-shaped connector. The ring-shaped connector is electrically connected to the power supply of the helipad via a wire. The wire is wound up and placed inside the helipad by a winding mechanism. The UAV has the following mode: Charging mode: The mounting mechanism fixes the parachute mechanism, and the locking assembly connects the ring plug to the ring connector to enable charging of the drone; Tethered mode: The installation mechanism releases the parachute mechanism, the locking assembly connects the ring plug to the ring connector, and the cable retraction mechanism releases the power cord to achieve continuous power supply to the drone; Free Flight Mode: The locking assembly loosens the ring plug from the ring connector to allow the drone to fly while disconnected from charging.

4. The omnidirectional charging system for unmanned aerial vehicles as described in claim 1, characterized in that, The parachute mechanism also includes a parachute compartment installed at the bottom of the connector. The side of the parachute compartment has a release hole. The parachute is placed inside the compartment. The triggering component is used to pull the parachute out of the compartment and open it, so as to prevent the connector from falling and being damaged when switching from tethered mode to free flight mode in mid-air.

5. The omnidirectional charging system for unmanned aerial vehicles as described in claim 4, characterized in that, The triggering component also includes a fixed semicircular block fixed to the outside of the parachute compartment and a movable semicircular block detachably connected to the fixed semicircular block. The lower end of the snap-fit ​​bracket is fixedly connected to the movable semicircular block. The snap-fit ​​bracket includes a connecting rod fixedly connected to the movable semicircular block and an arc-shaped circular block fixed to the upper end of the connecting rod. The arc-shaped circular block is snap-fitted to an elastic snap-fit ​​block at a corresponding position.

6. The omnidirectional charging system for unmanned aerial vehicles as described in claim 5, characterized in that, The connecting rod and the movable semicircular block share an installation inner hole. A crossbar is fixed in the installation inner hole. A spring is sleeved inside the crossbar. A push block is provided on the side of the spring near the parachute compartment. An arc-shaped push block is slidably sleeved on the end of the crossbar. The outer end of the trigger rope is wound around the crossbar between the push block and the arc-shaped push block. The middle part of the trigger rope passes through and is fixed to the arc-shaped push block. The inner end of the trigger rope is connected and fixed to the parachute's switch rope.

7. The omnidirectional charging system for unmanned aerial vehicles as described in claim 5, characterized in that, The fixed semicircular block and the movable semicircular block are detached and connected by a snap-fit ​​structure. The snap-fit ​​structure includes vertical slots opened at both ends of the fixed semicircular block and snap bars fixed at both ends of the movable semicircular block, and the snap bars are snapped into the slots.

8. The omnidirectional charging system for unmanned aerial vehicles as described in claim 5, characterized in that, The installation mechanism includes two symmetrically arranged L-shaped rods, and the vertical cross-section of the L-shaped rods is circular. The outer surfaces of the fixed semicircular block and the movable semicircular block are provided with arc-shaped grooves that fit the side of the L-shaped rods. The two arc-shaped grooves are driven to move laterally by a pusher to fix or release the parachute mechanism.

9. The omnidirectional charging system for unmanned aerial vehicles as described in claim 1, characterized in that, The conical groove is equipped with a center positioning mechanism for center positioning of the drone. The center positioning mechanism includes an annular groove in the conical groove, an annular airbag in the annular groove, the annular airbag expanding and contracting in the transverse direction, the annular airbag being connected to an external vacuum pump, and multiple evenly distributed positioning blocks fixed on the inner wall of the annular airbag. The drone's frame has a notch.

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