A waterproof connecting device for a drone battery

By designing a combination structure of sealing groove, swing arm and rubber sleeve at the connection between the drone battery and the fuselage, the sealing and stability problems of traditional drone battery connections are solved. This enables quick plugging and unplugging while ensuring the waterproofness of the electrical connection and the stability of the power supply.

CN224361412UActive Publication Date: 2026-06-16TAIYUAN ZHONGYAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAIYUAN ZHONGYAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Filing Date
2025-08-01
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Traditional drone batteries lack a sealed structure at the connection point with the fuselage, allowing rainwater, fog, or dust to enter and cause circuit failures. Furthermore, loose connections can affect the continuity of power supply.

Method used

A waterproof connection device was designed, which adopts a combination structure of sealing groove, swing rod and rubber sleeve to achieve a double waterproof barrier for battery plug and drone plug, and enhances the connection stability by fixing with bolts.

Benefits of technology

It enables quick connection and disconnection of the battery and the drone, ensuring waterproof sealing of electrical connections and stable power supply, adapting to the usage needs of complex outdoor environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an unmanned plane technical field, and disclose a waterproof connecting device for unmanned plane battery, including unmanned plane, the bottom of unmanned plane is installed with mounting bracket, the bottom middle part both sides of mounting bracket all are fixedly connected with mounting panel, and the top of mounting panel places battery, in the utility model, the sealing groove of battery plug is opened, and the sealing ring of unmanned plane plug is sleeved outside, and after preliminary alignment, battery plug is pushed close to unmanned plane plug, connecting rod synchronous movement, and the battery plug is rotated clockwise when the resistance block restricts connecting rod movement, and the plug rod is clamped into the slot guide groove through connecting rod, continue to push the plug to complete electrical plug, and the plug rod slides in the slot and drives the slot to swing, drives swing rod to overturn upward, synchronously drives sealing ring and outer rubber sleeve to displace upward, until sealing ring is embedded in sealing groove annular groove, and rubber sleeve covers plug connection interface to form double waterproof barrier, realizes electrical connection and waterproof seal synchronous completion.
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Description

TECHNICAL FIELD

[0001] The utility model relates to an unmanned plane technical field, concretely is a waterproof connecting device for unmanned plane battery. BACKGROUND

[0002] The unmanned plane is through radio remote control or self program control's not carrying people's aircraft, is widely used in aerial photography, inspection, plant protection, logistics etc.

[0003] But in the connection of traditional unmanned plane battery and fuselage depends on the simple butt joint of two joints, lacks the sealing structure specially: on the one hand, the joint gap is easy to cause rain, fog or dust to invade, causes the circuit short circuit, the problem such as contact failure, especially in the complex environment such as rainy day inspection, wetland plant protection in the open air, the problem is outstanding, on the other hand, the simple butt joint is easy to appear loose even to fall off when the unmanned plane high frequency vibration or attitude changes, influences the power supply continuity. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a waterproof connecting device for unmanned plane battery has the advantages such as good waterproof sealing performance, stable connection, convenient and efficient dismounting, solve the problem that the rain dust invasion caused by the lack of sealing structure in the background art traditional butt joint causes the circuit failure, and the connection loose falling off influences the power supply continuity.

[0005] To achieve the aforementioned objectives of good waterproof sealing performance, stable connection, and convenient and efficient assembly and disassembly, this utility model provides the following technical solution: A waterproof connection device for a drone battery, comprising a drone, a mounting bracket mounted on the bottom of the drone, mounting plates fixedly connected to both sides of the bottom center of the mounting bracket, a battery placed on the top of the mounting plate, threaded connecting seats fixedly connected to all four sides of the bottom of the battery, and the threaded connecting seats being threadedly connected to the mounting plate, a battery plug mounted on one side of the battery, a drone plug mounted on the bottom center of the drone, a sealing groove formed on the upper part of the outer wall of the drone plug, and openings in the middle of the outer wall of the drone plug. There are four swing grooves, and swing rods are rotatably connected to the inner cavities of the four swing grooves. Sealing rings are fixedly connected to the side of the four swing rods away from the swing grooves. Abutment blocks are fixedly connected to one side of the outer wall of each of the four swing rods. A slot is opened through the middle of each of the four abutment blocks. An annular sealing plate is fixedly connected to the outer wall of the battery plug. Four connecting rods are fixedly connected to the top of each of the annular sealing plates. A connecting block is fixedly connected to one side of the top of each of the four connecting rods. A plug is installed on the side of each of the four connecting blocks away from the connecting rods, and the plug engages with the slot. A rubber sleeve is installed on the outer wall of the annular sealing plate, and the rubber sleeve engages with the drone plug.

[0006] As a further improvement of this utility model, connecting plates are fixedly connected to the two mounting brackets on their relatively far sides.

[0007] As a further improvement of this utility model, a circular rod is fixedly connected to both sides of the top of the two connecting plates.

[0008] As a further improvement of this utility model, threaded rods are fixedly connected to the middle of both connecting plates.

[0009] As a further improvement of this utility model: the outer walls of the four circular rods are slidably connected to pressure plates, and the bottom of the pressure plates abuts against the battery.

[0010] As a further improvement of this utility model, threaded rods are threaded through both sides of the middle part of the pressure plate and are slidably connected.

[0011] As a further improvement of this utility model: bolts are connected to the upper part of the outer wall of both threaded rods, and the bolts abut against the pressure plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the sealing groove of the battery plug is opened, and the sealing ring on the outside of the drone plug is inserted and initially aligned. Then, the battery plug is pushed closer to the drone plug. At this time, the connecting rod moves synchronously. When the connecting rod touches the contact block, the battery plug is rotated clockwise. The connecting rod drives the plug rod to be inserted into the guide groove of the slot. During the process of continuing to push the battery plug to complete the electrical connection, the upward thrust causes the plug rod to slide in the slot and drive the slot to swing. This drives the swing rod to flip upward, and simultaneously drives the sealing ring and the outer rubber sleeve to move upward until the sealing ring is completely embedded in the annular groove of the sealing groove. At the same time, the rubber sleeve tightly covers the plug connection interface, forming a double waterproof barrier. Finally, the electrical connection and waterproof sealing are completed simultaneously, achieving rapid insertion. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the battery of this utility model;

[0016] Figure 3 This is a schematic diagram of the rubber sleeve of this utility model;

[0017] Figure 4 This is a schematic diagram of the drone plug of this utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a cross-sectional view of the rubber sleeve of this utility model;

[0020] Figure 7 For the present utility model Figure 2 Enlarged view of section B in the middle.

[0021] In the diagram: 1. Drone; 2. Mounting bracket; 3. Mounting plate; 4. Battery; 5. Threaded connector; 6. Battery plug; 7. Drone plug; 8. Sealing groove; 9. Swing groove; 10. Swing rod; 11. Sealing ring; 12. Abutment block; 13. Slot; 14. Annular sealing plate; 15. Connecting rod; 16. Connecting block; 17. Insert rod; 18. Rubber sleeve; 19. Connecting plate; 20. Round rod; 21. Threaded rod; 22. Pressure plate; 23. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-7 In this embodiment of the utility model, a waterproof connection device for a drone battery includes a drone 1. A mounting bracket 2 is installed on the bottom of the drone 1. Mounting plates 3 are fixedly connected to both sides of the bottom center of the mounting bracket 2. A battery 4 is placed on the top of the mounting plate 3. Threaded connecting seats 5 are fixedly connected to the four sides of the bottom of the battery 4, and the threaded connecting seats 5 are threadedly connected to the mounting plate 3. A battery plug 6 is installed on one side of the battery 4, and a drone plug 7 is installed at the bottom center of the drone 1. When the battery plug 6 is pushed closer to the drone plug 7, the connecting rod 15 moves synchronously. When the connecting rod 15 touches the contact block 12, the battery plug 6 is rotated clockwise. The connecting rod 15 drives the insertion rod 17 to be inserted into the guide groove of the slot 13. Then, the battery plug 6 is pushed closer to the drone plug 7 to complete the insertion process.

[0024] A sealing groove 8 is formed on the upper part of the outer wall of the drone plug 7, and four swing grooves 9 are formed in the middle of the outer wall of the drone plug 7. A swing rod 10 is rotatably connected to the inner cavity of the four swing grooves 9. A sealing ring 11 is fixedly connected to the side of the four swing rods 10 away from the swing grooves 9. The sealing ring 11 is preferably made of silicone rubber or fluororubber. These materials have excellent ductility and elastic recovery. When the swing rod 10 swings, it can deform and open with the driving force. It will not break due to excessive stretching, and it can also fit tightly against the inner wall of the sealing groove 8 after deformation. At the same time, silicone rubber and fluororubber have outstanding resistance to high and low temperatures and anti-aging properties. They can withstand temperature changes and ultraviolet corrosion in the outdoor environment for a long time, ensuring that a good sealing effect is maintained during repeated swinging and opening and closing, meeting the dual requirements of waterproofing and durability of the drone battery connection part.

[0025] Each of the four swing arms 10 has a contact block 12 fixedly connected to one side of its outer wall. Each of the four contact blocks 12 has a slot 13 extending through its center. An annular sealing plate 14 is fixedly connected to the outer wall of the battery plug 6. Four connecting rods 15 are fixedly connected to the top of each annular sealing plate 14. A connecting block 16 is fixedly connected to one side of the top of each of the four connecting rods 15. A plug rod 17 is fixedly connected to the side of each connecting block 16 away from the connecting rod 15, and the plug rod 17 engages with the slot 13. The connecting rods 15 move synchronously. When the connecting rod 15 contacts the contact block 12, the battery plug 6 rotates clockwise. The connecting rod 15 drives the plug rod 17 into the guide groove of the slot 13. Then, the battery plug 6 continues to move closer to the drone plug 7 to complete the connection. During the electrical connection process, the upward thrust causes the plug rod 17 to slide within the slot 13, simultaneously causing the slot 13 to swing. This, in turn, drives the swing arm 10 to rotate upwards, simultaneously moving the sealing ring 11 and the outer rubber sleeve. 18 moves upward until the sealing ring 11 is completely embedded in the annular groove of the sealing groove 8. At the same time, the rubber sleeve 18 tightly covers the plug connection interface, forming a double waterproof barrier of the sealing ring 11 and the rubber sleeve 18. The outer wall of the annular sealing plate 14 is equipped with the rubber sleeve 18, and the rubber sleeve 18 cooperates with the drone plug 7. The rubber sleeve 18 is preferably made of nitrile rubber or EPDM rubber. These materials have excellent ductility and elasticity. During installation, they can be easily stretched to wrap the connection part of the drone plug 7 and the sealing ring 11, tightly fitting the surfaces of both to form a seamless cover. At the same time, nitrile rubber and EPDM rubber have excellent wear resistance and anti-aging properties, and have good barrier properties against water vapor and dust. Even when the plug is repeatedly inserted and removed, causing frequent deformation of the rubber sleeve 18, it can still maintain stable sealing performance, further strengthening the double waterproof structure of the sealing ring 11 and the rubber sleeve 18, and adapting to the usage requirements of drones in complex outdoor environments.

[0026] Two mounting brackets 2 are fixedly connected to connecting plates 19 on opposite sides. Circular rods 20 are fixedly connected to the top sides of both connecting plates 19. Threaded rods 21 are fixedly connected to the middle of both connecting plates 19. Pressure plates 22 are slidably connected through the outer walls of the four circular rods 20, with the bottom of the pressure plates 22 abutting against the battery 4. Threaded rods 21 are slidably connected through the middle sides of the pressure plates 22. Bolts 23 are connected to the upper part of the outer walls of the two threaded rods 21, and the bolts 23 abut against the pressure plates 22. After the battery 4 is fixed to the mounting plate 3 via the threaded connecting seat 5, the pressure plates 20 are... 2. Pass the threaded rod 21 through it and place it on top of the battery 4. Since the bottom of the pressure plate 22 is made of flexible material, screw the bolt 23 into the outer wall of the threaded rod 21 and turn it downward. The bolt 23 will drive the pressure plate 22 to press down synchronously and fit tightly against the surface of the battery 4, further enhancing the installation stability of the battery 4. At the same time, the flexible bottom of the pressure plate 22 will naturally wrap around and press down the wire connecting the battery plug 6 and the battery 4. The wire is fixed by flexible clamping, which effectively prevents the wire from shaking due to the vibration of the drone flight, thereby preventing the connection from loosening due to the swing of the battery plug 6 with the wire, and ensuring the stability of power supply.

[0027] The working principle of this utility model is as follows: When installing the battery 4, firstly, the battery 4 is fixed to the mounting plate 3 through the threaded connecting seats 5 around its perimeter, ensuring that the base is installed firmly. Next, the plug is connected. The sealing groove 8 of the battery plug 6 is opened, and the sealing ring 11 on the outside of the drone plug 7 is inserted and initially aligned. Then, the battery plug 6 is pushed closer to the drone plug 7. At this time, the connecting rod 15 moves synchronously. When the connecting rod 15 touches the contact block 12, the battery plug 6 is rotated clockwise. The connecting rod 15 drives the insertion rod 17 to be inserted into the guide groove of the slot 13, and then continues. As the battery plug 6 is pushed closer to the drone plug 7 to complete the electrical connection, the upward thrust continues to slide the plug rod 17 in the slot 13, causing the slot 13 to swing. This, in turn, drives the swing rod 10 to flip upward, simultaneously moving the sealing ring 11 and the outer rubber sleeve 18 upward until the sealing ring 11 is completely embedded in the annular groove of the sealing groove 8. At the same time, the rubber sleeve 18 tightly covers the plug connection interface, forming a double waterproof barrier of the sealing ring 11 and the rubber sleeve 18. This achieves the simultaneous completion of electrical connection and waterproof sealing, enabling rapid connection.

[0028] When disassembling the battery plug 6 and the drone plug 7, first pull the battery plug 6 vertically downwards, causing the connecting rod 15, connecting block 16, and plug rod 17 to move downwards simultaneously. The plug rod 17, through its cooperation with the slot 13, causes the swing rod 10 to flip downwards and reset. At the same time, the sealing ring 11 and the outer rubber sleeve 18 move downwards to release the seal covering the plug connection interface. When the plug rod 17 cannot move further in the slot 13 after the battery plug 6 has moved downwards, rotate the battery plug 6 counterclockwise to cause the plug rod 17 to disengage from the locking position of the slot 13. After the plug rod 17 is unlocked from the slot 13, continue to pull the battery plug 6 downwards. The rubber sleeve 18 then completely disengages from the drone plug 7, ultimately achieving rapid separation of the two plugs. This simultaneously completes the release of the sealing structure and the separation of the electrical connection, ensuring an efficient disassembly process and reusable waterproof components.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waterproof connection device for a drone battery, comprising a drone (1), characterized in that: The drone (1) is equipped with a mounting bracket (2) at its bottom. Mounting plates (3) are fixedly connected to both sides of the bottom center of the mounting bracket (2). A battery (4) is placed on the top of the mounting plate (3). Threaded connectors (5) are fixedly connected to the four sides of the bottom of the battery (4), and the threaded connectors (5) are threadedly connected to the mounting plate (3). A battery plug (6) is installed on one side of the battery (4). A drone plug (7) is installed at the bottom center of the drone (1). A sealing groove (8) is opened on the upper part of the outer wall of the drone plug (7). Four swing grooves (9) are opened in the middle of the outer wall of the drone plug (7). Swing rods (10) are rotatably connected to the inner cavities of the four swing grooves (9). The four swing rods (10) are located away from the swing grooves. A sealing ring (11) is fixedly connected to one side of the 9), and a contact block (12) is fixedly connected to one side of the outer wall of each of the four swing rods (10). A slot (13) is opened through the middle of each of the four contact blocks (12). An annular sealing plate (14) is fixedly connected to the outer wall of the battery plug (6). Four connecting rods (15) are fixedly connected to the top of the annular sealing plate (14). A connecting block (16) is fixedly connected to one side of the top of each of the four connecting rods (15). A plug (17) is installed on the side of each of the four connecting blocks (16) away from the connecting rod (15), and the plug (17) cooperates with the slot (13). A rubber sleeve (18) is installed on the outer wall of the annular sealing plate (14), and the rubber sleeve (18) cooperates with the drone plug (7).

2. The waterproof connection device for a drone battery according to claim 1, characterized in that: Each of the two mounting brackets (2) has a connecting plate (19) fixedly connected to the side that is relatively far apart from the other side.

3. A waterproof connection device for a drone battery according to claim 2, characterized in that: Both of the two connecting plates (19) are fixedly connected to the top sides with round rods (20).

4. A waterproof connection device for a drone battery according to claim 2, characterized in that: A threaded rod (21) is fixedly connected to the middle of each of the two connecting plates (19).

5. A waterproof connection device for a drone battery according to claim 3, characterized in that: The outer walls of the four circular rods (20) are slidably connected to pressure plates (22), and the bottom of the pressure plates (22) abuts against the battery (4).

6. A waterproof connection device for a drone battery according to claim 5, characterized in that: The pressure plate (22) has threaded rods (21) running through its middle two sides and is slidably connected.

7. A waterproof connection device for a drone battery according to claim 6, characterized in that: Bolts (23) are connected to the upper part of the outer wall of both threaded rods (21), and the bolts (23) abut against the pressure plate (22).