An unmanned aerial vehicle arm automatic folding device

Abstract

The utility model belongs to the technical field of unmanned plane, concretely relates to an unmanned plane arm automatic folding device, including arm body, the arm body surface is connected with connecting shaft, the connecting shaft surface fixedly connected from driven gear, driven gear axle part surface is connected in bearing seat inner wall, the bearing seat surface is connected in unmanned plane shell inner wall, and the unmanned plane shell inner wall surface welds mounting plate. The utility model, through the driving rotation of the driving gear that the driven gear connected with the connecting shaft connected on the arm body is engaged, thereby carries out automatic folding to two groups of arm body of unmanned plane shell bottom, improves the efficiency and precision that the storage is used after, avoids the damage that manual operation causes to arm body, in addition, utilizes the dustproof rubber pad that is locked in the top of unmanned plane shell to shield the driving gear and driven gear in the unmanned plane shell, avoids its exposure in the environment and leads to the impurity accumulation to cause the wear and tear to the driving gear and driven gear surface.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to an automatic folding device for UAV arms. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aircraft controlled by radio remote control equipment and their own programmed control devices. The term "UAV" is actually a general term for unmanned aerial vehicles, which, from a technical perspective, can be categorized as: unmanned fixed-wing aircraft, unmanned vertical takeoff and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi-rotor aircraft, and unmanned paragliders, among others. Compared to manned aircraft, they have advantages such as smaller size, lower cost, ease of use, lower requirements for the operational environment, and stronger battlefield survivability.

[0003] Existing portable small drones require users to manually fold their arms after use to compress their size and facilitate temporary storage in the storage compartment. This prevents damage to the arms during transport when the drone is extended, which could easily lead to bumps and knocks. However, manual storage is cumbersome, and the precision of manual folding is inconsistent, which may result in deviations in the folding angle of the arms. This leads to uneven drone size after storage, making it impossible to stably fit into a standard storage compartment and thus causing damage during transport. Utility Model Content

[0004] The purpose of this invention is to provide an automatic folding device for drone arms, which aims to solve the problem that existing portable small drones require users to manually fold their arms after use, so that they can be stored in a storage compartment after being folded down, avoiding damage to the arms during transportation due to bumps when the drone is extended. However, manual folding is cumbersome, and the precision of manual folding is inconsistent, which may result in deviations in the folding angle of the arms, leading to uneven drone volume after folding, making it impossible to stably fit into a standard storage compartment, and thus causing damage during transportation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic folding device for a drone arm, comprising an arm body, a connecting shaft connected to the surface of the arm body, a driven gear fixedly connected to the surface of the connecting shaft, the shaft surface of the driven gear sleeved on the inner wall of a bearing seat, the surface of the bearing seat connected to the inner wall of the drone shell, a mounting plate welded to the surface of the inner wall of the drone shell, a servo motor mounted on the top surface of the mounting plate, the output end surface of the servo motor sleeved on the inner wall of the bearing mounted on the mounting plate, a driving gear connected to the output end surface of the servo motor, the driven gear meshing with the driven gear, the bottom surface of the driving gear sleeved on the inner wall of the drone shell, a limit switch mounted on the surface of the drone shell, a fixing block connected to the surface of the inner wall of the drone shell, a trapezoidal groove formed on the top surface of the fixing block, a trapezoidal block fitted into the trapezoidal groove, and a limit block adhered to the surface of the trapezoidal block.

[0006] As a preferred embodiment of the automatic folding device for the unmanned aerial vehicle (UAV) arm of this utility model, the two sets of driven gears are symmetrically distributed on both sides of the driving gear, and the two sets of arm body, connecting shaft, driven gear, bearing seat and driving gear are symmetrically distributed on the surface of the UAV shell.

[0007] As a preferred embodiment of the automatic folding device for the unmanned aerial vehicle (UAV) arm of this utility model, the two sets of limit switches are symmetrically installed on the surface of the UAV shell.

[0008] As a preferred embodiment of the automatic folding device for the unmanned aerial vehicle (UAV) arm of this utility model, the two fixing blocks are symmetrically distributed on the inner wall of the UAV shell.

[0009] As a preferred embodiment of the automatic folding device for the unmanned aerial vehicle (UAV) arm of this utility model, the limiting block is engaged with the surface of the limiting groove, the limiting groove is formed on the surface of the fixing block, and a dustproof pad is adhered to the top surface of the trapezoidal block, with the surface of the dustproof pad abutting against the inner wall of the top opening end of the UAV shell.

[0010] As a preferred embodiment of the automatic folding device for the unmanned aerial vehicle arm of this utility model, the limiting block is a semi-circular protrusion whose shape and size are adapted to the limiting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The driven gear, connected to the connecting shaft on the main body of the drone arm, is driven to rotate by the meshing drive gear, thereby automatically folding the two sets of main bodies of the drone arm at the bottom of the drone shell. This improves the efficiency and accuracy of storage after use and avoids damage to the main body of the drone arm caused by manual operation. In addition, the dustproof pads fixed to the top of the drone shell cover the drive gear and driven gear inside the drone shell, preventing them from being exposed to the environment and causing impurities to accumulate, which would cause wear on the surface of the drive gear and driven gear. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a side view sectional structural diagram of the present invention;

[0017] Figure 4 This is a top view of the unmanned aerial vehicle (UAV) shell of this utility model.

[0018] Figure 5 This is a schematic diagram of the front cross-sectional structure of this utility model.

[0019] In the diagram: 1. Arm body; 2. Connecting shaft; 3. Driven gear; 4. Bearing seat; 5. UAV shell; 6. Mounting plate; 7. Servo motor; 8. Drive gear; 9. Limit switch; 10. Fixing block; 11. Trapezoidal groove; 12. Trapezoidal block; 13. Limit block; 14. Limit groove; 15. Dustproof rubber pad. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5This utility model provides the following technical solution: an automatic folding device for a drone arm, comprising an arm body 1, a connecting shaft 2 connected to the surface of the arm body 1, a driven gear 3 fixedly connected to the surface of the connecting shaft 2, the shaft surface of the driven gear 3 sleeved on the inner wall of a bearing seat 4, the surface of the bearing seat 4 connected to the inner wall of a drone shell 5, a mounting plate 6 welded to the surface of the inner wall of the drone shell 5, a servo motor 7 mounted on the top surface of the mounting plate 6, the output end surface of the servo motor 7 sleeved on the inner wall of the bearing mounted on the surface of the mounting plate 6, a driving gear 8 connected to the output end surface of the servo motor 7, and the driven gear 3 meshing with the surface of the driving gear 8. The bottom surface of the drive gear 8 is sleeved in the bearing installed on the inner wall of the drone shell 5. The limit switch 9 is installed on the surface of the drone shell 5. The inner wall surface of the drone shell 5 is connected to the fixing block 10. The top surface of the fixing block 10 is opened with a trapezoidal groove 11. The trapezoidal block 12 is inserted into the surface of the trapezoidal groove 11. The limit block 13 is bonded to the surface of the trapezoidal block 12. In this design scheme, the arm body 1 is the main body of the drone arm, and a large number of related components are set in the main body of the drone arm. Since they are existing technologies and the core content of this technical solution is irrelevant to them, they will not be described in detail in this technical solution.

[0022] Preferably, two sets of driven gears 3 are symmetrically distributed on both sides of the driving gear 8, and two sets of arm bodies 1, connecting shafts 2, driven gears 3, bearing seats 4 and driving gears 8 are symmetrically distributed on the surface of the UAV shell 5.

[0023] In practical use, when the servo motor 7 starts to rotate, the active gear 8 connected to its surface is driven to rotate together in the bearing inside the inner wall of the drone housing 5. When the active gear 8 rotates, the driven gears 3 connected to its two sides are driven to rotate forward and reverse respectively, so that a set of arm bodies 1 connected to the driven gears 3 rotate and fold from the extended state from both sides of the drone housing 5 toward the rectangular groove at the bottom of the drone housing 5.

[0024] Preferably, two sets of limit switches 9 are symmetrically installed on the surface of the UAV shell 5.

[0025] In actual use, after one side of the arm body 1 abuts against the surface of the limit switch 9, the limit switch 9 transmits a signal to the UAV control system, and then the control system sends a control signal to the servo motor 7, thereby causing the servo motor 7 to stop running.

[0026] Preferably, two fixing blocks 10 are symmetrically distributed on the inner wall of the UAV shell 5.

[0027] In practical use, the limiting block 13 and trapezoidal block 12 connected to the bottom of the dustproof pad 15 are inserted into the fixing block 10. The trapezoidal block 12 and limiting block 13, made of silicone rubber, are inserted and locked in the trapezoidal groove 11 and the limiting groove 14, thereby fixing the dustproof pad 15 at the top of the drone shell 5.

[0028] Preferably, the limiting block 13 is engaged with the surface of the limiting groove 14, the limiting groove 14 is opened on the surface of the fixing block 10, the top surface of the trapezoidal block 12 is bonded with a dustproof pad 15, and the surface of the dustproof pad 15 abuts against the inner wall of the top opening end of the drone shell 5.

[0029] In practical use, the trapezoidal block 12 and the limiting block 13 made of silicone rubber are inserted and locked in the trapezoidal groove 11 and the limiting groove 14, thereby fixing the dustproof pad 15 at the top of the drone shell 5. The dustproof pad 15 of the material protects the driven gear 3 and the driving gear 8, preventing impurities from accumulating on their surfaces and causing wear.

[0030] Preferably, the limiting block 13 is a semi-circular protrusion, the shape and size of which are adapted to the limiting groove 14.

[0031] In practical use, the silicone rubber limiting block 13 is engaged with the limiting groove 14 to fix the position of the trapezoidal block 12 inserted in the trapezoidal groove 11, thereby fixing the dustproof pad 15 at the top of the drone shell 5.

[0032] Working principle: Before or after use, when the drone needs to be folded up, the flight control motherboard sends a signal to the servo motor 7, triggering the electronic speed controller to supply power to the servo motor 7. The servo motor 7, installed inside the drone shell 5, rotates in both forward and reverse directions. When the servo motor 7 starts rotating, the drive gear 8 connected to its surface is driven to rotate within the bearings on the inner wall of the drone shell 5. As the drive gear 8 rotates, the driven gears 3 meshing on both sides are simultaneously driven to rotate in both forward and reverse directions, causing a set of arm bodies 1 connected to the driven gears 3 to simultaneously move from an extended state from both sides of the drone shell 5 towards the drone. The robot housing 5 rotates and folds at the rectangular groove at its bottom until one side of the robot arm 1 abuts against the surface of the limit switch 9. At this point, the limit switch 9 transmits a signal to the drone's control system, which then sends a control signal to the servo motor 7, causing the servo motor 7 to stop running. In addition, an electromagnetic lock is installed on the surface of the drone housing 5 near the robot arm 1. After the servo motor 7 stops running, the position of the robot arm 1 is locked to prevent it from shifting. After the robot arm 1 is fully extended, the latch of the electromagnetic lock extends and inserts into the positioning hole of the connecting plate on the surface of the robot arm 1, directly restricting the rotational freedom of the robot arm 1. When folding, the electromagnetic lock is first de-energized and unlocked, the latch retracts, and then the servo motor 7 is started to drive the drive gear 8.

[0033] Similarly, the symmetrically distributed arm body 1 on the other side drives the connected drive gear 8 to rotate through the reverse rotation of the servo motor 7 on that side. This causes the symmetrically distributed arm body 1 on the other side to be driven by the driven gear 3 to rotate from both sides towards the middle, thereby completing the automatic folding of the arm body 1 so that the drone and the folded arm body 1 can be stored in the storage compartment.

[0034] In addition, the trapezoidal groove 11 and the limiting groove 14 opened on the fixing block 10 connected to the top of the drone shell 5 facilitate the insertion of the limiting block 13 and the trapezoidal block 12 connected to the bottom of the dustproof pad 15 into the fixing block 10. The trapezoidal block 12 and the limiting block 13, made of silicone rubber, are inserted and locked in the trapezoidal groove 11 and the limiting groove 14, thereby fixing the position of the dustproof pad 15 at the top of the drone shell 5. The dustproof pad 15, made of silicone rubber, protects the driven gear 3 and the driving gear 8, preventing impurities from accumulating on their surfaces and causing wear.

[0035] The dustproof pad 15 is made of thermally conductive fluorosilicone rubber, which is resistant to oil, UV rays and chemical corrosion. The surface can be treated with a matte non-stick finish to reduce dust adhesion and does not affect the heat dissipation of the servo motor 7.

[0036] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic folding device for a drone arm, comprising an arm body (1), characterized in that: The arm body (1) is connected to a connecting shaft (2), and a driven gear (3) is fixedly connected to the surface of the connecting shaft (2). The shaft surface of the driven gear (3) is sleeved on the inner wall of the bearing seat (4). The surface of the bearing seat (4) is connected to the inner wall of the drone shell (5). A mounting plate (6) is welded to the inner wall surface of the drone shell (5). A servo motor (7) is mounted on the top surface of the mounting plate (6). The output end surface of the servo motor (7) is sleeved on the inner wall of the bearing mounted on the surface of the mounting plate (6). The servo motor (7) outputs... The end surface is connected to the drive gear (8), the drive gear (8) is meshed with the driven gear (3), the bottom surface of the drive gear (8) is sleeved in the bearing installed on the inner wall of the drone housing (5), the surface of the drone housing (5) is equipped with a limit switch (9), the surface of the inner wall of the drone housing (5) is connected to a fixing block (10), the top surface of the fixing block (10) is provided with a trapezoidal groove (11), the surface of the trapezoidal groove (11) is fitted with a trapezoidal block (12), and the surface of the trapezoidal block (12) is bonded with a limit block (13).

2. The automatic folding device for the arm of a drone according to claim 1, characterized in that: The two sets of driven gears (3) are symmetrically distributed on both sides of the driving gear (8), and the two sets of arm body (1), connecting shaft (2), driven gear (3), bearing seat (4) and driving gear (8) are symmetrically distributed on the surface of the UAV shell (5).

3. The automatic folding device for the arm of a drone according to claim 1, characterized in that: The two sets of limit switches (9) are symmetrically installed on the surface of the UAV housing (5).

4. The automatic folding device for the arm of a drone according to claim 2, characterized in that: The two fixing blocks (10) are symmetrically distributed on the inner wall of the UAV shell (5).

5. The automatic folding device for the arm of a drone according to claim 1, characterized in that: The limiting block (13) is engaged with the surface of the limiting groove (14), the limiting groove (14) is opened on the surface of the fixing block (10), the top surface of the trapezoidal block (12) is bonded with a dustproof pad (15), and the surface of the dustproof pad (15) abuts against the inner wall of the top opening end of the drone shell (5).

6. The automatic folding device for the arm of a drone according to claim 5, characterized in that: The limiting block (13) is a semi-circular protrusion whose shape and size are adapted to the limiting groove (14).

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