Unmanned aerial vehicle paddle arm with telescopic function

Abstract

This utility model relates to the field of drone accessory technology, and discloses a drone propeller arm with telescopic function, including a body. A hollow column is fixedly connected to the bottom of the body, and a hollow base is fixedly connected to the lower outer part of the hollow column. A servo motor is fixedly connected to the bottom of the hollow base. The output end of the servo motor passes through the hollow base and is fixedly connected to a driving bevel gear. Multiple lead screws are equidistantly rotatably connected around the outer perimeter of the hollow column. One end of each lead screw passes through the hollow column and is fixedly connected to a driven bevel gear. The driven bevel gears are all meshed with the driving bevel gear. A movable rod is threaded to the outer side of the lead screw. In this utility model, the servo motor can drive the driving bevel gear to rotate, and the driven bevel gears will rotate accordingly, thereby driving the lead screws to rotate. The length of the drone propeller arm can be adjusted according to actual use, thus avoiding collisions with surrounding obstacles and damage.

Description

Technical Field

[0001] This utility model relates to the field of drone accessories technology, and in particular to drone propeller arms with telescopic function. Background Technology

[0002] Drones, also known as unmanned aerial vehicles, are unmanned aircraft controlled by radio remote control equipment and their own program control devices. Due to their high efficiency and flexibility, they are widely used in aerial photography, surveying and mapping, agricultural plant protection, and emergency rescue. Drones are changing people's work and lifestyles with their unique advantages.

[0003] A drone mainly consists of a fuselage, rotor arms, and propeller blades. Its working principle is to send control commands to the drone via a remote controller. The remote controller usually includes joysticks, buttons, and a display screen. The joysticks are used to control the drone's flight direction and speed, while the buttons can perform specific functions. The remote controller communicates with the drone via wireless signals, transmitting the user's commands to the flight controller to complete various flight missions.

[0004] Currently available drones have fixed propeller lengths, which makes them prone to collisions with obstacles in confined spaces, leading to damage and reduced lifespan. This fails to meet user needs. Therefore, this invention designs a drone propeller with telescopic functionality to address the proposed technical problem. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a drone propeller arm with telescopic function, which aims to improve the problem that the length of the drone propeller arm in the prior art is not convenient to adjust according to the actual situation.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a telescopic drone propeller arm, comprising a body, a hollow column fixedly connected to the bottom of the body, a hollow base fixedly connected to the lower outer side of the hollow column, a servo motor fixedly connected to the bottom of the hollow base, the output end of the servo motor passing through the hollow base and fixedly connected to a driving bevel gear, multiple lead screws rotatably connected at equal intervals around the outer perimeter of the hollow column, one end of each lead screw passing through the hollow column and fixedly connected to a driven bevel gear, all of the driven bevel gears meshing with the driving bevel gear, a movable rod threadedly connected to the outer side of the lead screw, a hollow rod fixedly connected to one end of the movable rod, and a disassembly mechanism provided inside the hollow rod for convenient disassembly and replacement of damaged parts.

[0007] As a further description of the above technical solution: The disassembly mechanism includes support rods, multiple support rods are slidably connected to the interior of corresponding hollow rods, and holes are provided on both sides of the multiple support rods. A spring is fixedly connected to one side of the interior of each hole, and a limit rod is fixedly connected to one end of the spring. Limit holes are provided on both sides of the multiple hollow rods, and the multiple limit rods are respectively inserted into the corresponding limit holes. Support blocks are fixedly connected to both sides of the multiple hollow rods, and a sliding groove is provided on the top of each support block. A slider is slidably connected inside the sliding groove, and a top rod is fixedly connected to one side of the slider. A paddle is rotatably connected to the top of each of the multiple support rods.

[0008] As a further description of the above technical solution: Limiting blocks are fixedly connected to both sides of the multiple movable rods, and multiple sliding rods are fixedly connected at equal intervals around the outer perimeter of the hollow column. The multiple limiting blocks are slidably connected to the outer side of the corresponding sliding rods.

[0009] As a further description of the above technical solution: A radar life detector is fixedly connected to the bottom front side of the hollow base, and a camera is installed at the bottom of the hollow base. The radar life detector, camera, and servo motor are all electrically connected to an external remote control.

[0010] As a further description of the above technical solution: The hollow base has connecting rods fixedly connected to the bottom left and right sides, front and rear ends, and the bottom ends of multiple connecting rods are fixedly connected to the same connecting shaft. Rollers are rotatably connected to the outer middle of two connecting shafts.

[0011] As a further description of the above technical solution: A fixing rod is fixedly connected to the bottom of the hollow base, and a protective shell is fixedly connected to the bottom end of the fixing rod. The camera is installed inside the protective shell.

[0012] As a further description of the above technical solution: The internal dimensions of the plurality of limiting holes are respectively matched with the dimensions of the corresponding limiting rods.

[0013] As a further description of the above technical solution: The protective shell is threaded with bolts on both the left and right sides, and one end of each bolt passes through the protective shell and the camera in sequence.

[0014] This utility model has the following beneficial effects: In this invention, a servo motor drives the active bevel gear to rotate, and the driven bevel gear meshing with the active bevel gear will rotate accordingly, thereby driving the lead screw to rotate. At this time, the movable rod on the lead screw will move around the outside of the slide bar, and the length of the propeller arm of the drone can be adjusted according to the actual use situation. This can prevent the drone from colliding with surrounding obstacles and causing damage, thereby improving the service life of the drone and meeting the needs of users.

[0015] In this invention, pressing the limiting rods on both sides causes the spring to be compressed, which in turn causes the limiting rods to disengage from the limiting holes, thus releasing the limiting fixation of the corresponding support rod. Subsequently, the damaged blades can be disassembled and replaced. Disassembling and replacing the blades is relatively simple, thereby improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a perspective view of the telescopic drone propeller arm proposed in this utility model; Figure 2 This is a bottom view of the telescopic drone propeller arm proposed in this utility model. Figure 3 This is a three-dimensional partial structural cross-sectional view of the telescopic drone propeller arm proposed in this utility model. Figure 4 This is a top-view partial structural cross-sectional view of the telescopic drone propeller arm proposed in this utility model. Figure 5 This is a partial structural exploded view of the telescopic drone propeller arm proposed in this utility model.

[0017] Legend: 1. Body; 2. Disassembly mechanism; 201. Hole; 202. Spring; 203. Limiting rod; 204. Support rod; 205. Limiting hole; 206. Support block; 207. Slide groove; 208. Slider; 209. Top rod; 210. Paddle; 3. Hollow column; 4. Hollow base; 5. Servo motor; 6. Driving bevel gear; 7. Lead screw; 8. Driven bevel gear; 9. Movable rod; 10. Hollow rod; 11. Limiting block; 12. Slide rod; 13. Radar life detector; 14. Fixing rod; 15. Protective shell; 16. Camera; 17. Bolt; 18. Connecting rod; 19. Connecting shaft; 20. Roller. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides: a telescopic drone propeller arm, including a body 1, a hollow column 3 fixedly connected to the bottom of the body 1, a hollow base 4 fixedly connected to the lower outer side of the hollow column 3, a servo motor 5 fixedly connected to the bottom of the hollow base 4, the output end of the servo motor 5 passing through the hollow base 4 and fixedly connected to a driving bevel gear 6, multiple lead screws 7 rotatably connected at equal intervals around the outer periphery of the hollow column 3, one end of the lead screw 7 passing through the hollow column 3 and fixedly connected to a driven bevel gear 8, the multiple driven bevel gears 8 meshing with the driving bevel gear 6, a movable rod 9 threadedly connected to the outer side of the lead screw 7, a hollow rod 10 fixedly connected to one end of the movable rod 9, a disassembly mechanism 2 provided inside the hollow rod 10, the disassembly mechanism 2 being used to facilitate the disassembly and replacement of damaged parts, limit blocks 11 fixedly connected to both sides of the multiple movable rods 9, multiple sliding rods 12 fixedly connected at equal intervals around the outer periphery of the hollow column 3, the multiple limit blocks 11 being slidably connected to the outer side of the corresponding sliding rod 12 respectively; Specifically, the servo motor 5 drives the active bevel gear 6 to rotate, and the driven bevel gear 8 meshing with it will also rotate. This linkage effect is further transmitted to the lead screw 7, which will rotate accordingly. At this time, the movable rod 9 on the outside of the lead screw 7 will move around the outside of the slide bar 12. This design allows the propeller arm length of the drone body 1 to be flexibly adjusted according to actual usage. By adjusting the propeller arm length, the drone body 1 can be effectively prevented from colliding with surrounding obstacles during flight, thereby reducing the risk of damage to the drone body 1. This design not only improves the service life of the drone, but also better meets the actual needs of users and ensures the safe flight of the drone in various complex environments.

[0020] Reference Figure 1 and Figure 5The disassembly mechanism 2 includes support rods 204, which are slidably connected to the interior of corresponding hollow rods 10. Holes 201 are provided on both sides of the support rods 204. A spring 202 is fixedly connected to one side of the interior of the hole 201. A limit rod 203 is fixedly connected to one end of the spring 202. Limit holes 205 are provided on both sides of the hollow rods 10. The limit rods 203 are inserted into the corresponding limit holes 205. Support blocks 206 are fixedly connected to both sides of the hollow rods 10. A groove 207 is provided on the top of the support block 206. A slider 208 is slidably connected inside the groove 207. A top rod 209 is fixedly connected to one side of the slider 208. A paddle 210 is rotatably connected to the top of the support rods 204. The internal size of the limit holes 205 is matched with the size of the corresponding limit rods 203. Specifically, when the blade 210 on the propeller arm is damaged and needs to be disassembled and replaced, the limiting rod 203 on the damaged propeller arm is pressed first. During this process, the spring 202 is driven by the squeezing force to disengage the limiting rod 203 from the limiting hole 205 and enter the hole 201. This action can release the limiting and fixing state of the corresponding support rod 204, so that the damaged blade 210 can be easily removed and replaced. The whole process of disassembling and replacing the blade 210 is relatively simple, thereby improving the practicality of the device.

[0021] Reference Figure 1 and Figure 2 A radar life detector 13 is fixedly connected to the bottom front side of the hollow base 4. A camera 16 is installed at the bottom of the hollow base 4. The radar life detector 13, camera 16 and servo motor 5 are all electrically connected to an external remote control. A fixing rod 14 is fixedly connected to the bottom of the hollow base 4. A protective shell 15 is fixedly connected to the bottom end of the fixing rod 14. The camera 16 is installed inside the protective shell 15. Bolts 17 are threaded on both the left and right sides of the protective shell 15. One end of the bolt 17 passes through the protective shell 15 and the camera 16 in sequence. Specifically, the cooperation between the camera 16 and the radar life detector 13 makes it easy to find people in need of rescue, while the protective shell 15 can protect the camera 16 from damage. An external remote control can control the operation of the radar life detector 13, the camera 16 and the servo motor 5, the model of which is MHMJ082G1U.

[0022] Reference Figure 1 and Figure 2 The bottom left and right sides of the hollow base 4 are fixedly connected with connecting rods 18. The bottom ends of multiple connecting rods 18 are fixedly connected with the same connecting shaft 19. Rollers 20 are rotatably connected to the outer middle of the two connecting shafts 19. Specifically, the rollers 20 allow the machine body 1 to move easily on the ground.

[0023] Working principle: When using the machine body 1, the machine body 1 can be started and stopped by an external remote control. When it needs to be used in a narrow space, the servo motor 5 can drive the active bevel gear 6 to rotate. The driven bevel gear 8 that meshes with the active bevel gear 6 will rotate accordingly, thereby driving the lead screw 7 to rotate. At this time, the movable rod 9 on the lead screw 7 will move around outside the slide rod 12. The length of the propeller arm of the machine body 1 can be adjusted according to the actual use situation, thereby avoiding the machine body 1 from colliding with surrounding obstacles and causing damage. Furthermore, when the blade 210 on the propeller arm is damaged and needs to be disassembled and replaced, the slider 203 on the damaged propeller arm is moved. The slider 203 will then drive the push rod to move inside the slide groove 207 until it presses the limit rod 203. At the same time, the spring 202 will be compressed and will drive the limit rod 203 to disengage from the limit hole 205 and enter the hole 201, which can release the limit fixation of the corresponding support rod 204. Then the damaged blade 210 can be removed and replaced. Disassembling and replacing the blade 210 is relatively simple.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic unmanned aerial vehicle (UAV) propeller arm, comprising a body (1), characterized in that: A hollow column (3) is fixedly connected to the bottom of the body (1). A hollow base (4) is fixedly connected to the lower outer side of the hollow column (3). A servo motor (5) is fixedly connected to the bottom of the hollow base (4). The output end of the servo motor (5) passes through the hollow base (4) and is fixedly connected to the active bevel gear (6). Multiple lead screws (7) are equidistantly rotatably connected to the outer periphery of the hollow column (3). One end of the lead screw (7) passes through the hollow column (3) and is fixedly connected to the driven bevel gear (8). The multiple driven bevel gears (8) are meshed with the active bevel gear (6). A movable rod (9) is threadedly connected to the outer side of the lead screw (7). A hollow rod (10) is fixedly connected to one end of the movable rod (9). A disassembly mechanism (2) is provided inside the hollow rod (10). The disassembly mechanism (2) is used to facilitate the disassembly and replacement of damaged parts.

2. The telescopic drone propeller arm according to claim 1, characterized in that: The disassembly mechanism (2) includes support rods (204), and multiple support rods (204) are slidably connected inside the corresponding hollow rods (10). Holes (201) are opened on both sides of the multiple support rods (204). A spring (202) is fixedly connected to one side of the hole (201). A limit rod (203) is fixedly connected to one end of the spring (202). Limit holes (205) are opened on both sides of the multiple hollow rods (10). The multiple limit rods (203) are respectively inserted into the corresponding limit holes (205). Support blocks (206) are fixedly connected to both sides of the multiple hollow rods (10). A groove (207) is opened on the top of the support block (206). A slider (208) is slidably connected inside the groove (207). A top rod (209) is fixedly connected to one side of the slider (208). A blade (210) is rotatably connected to the top of the multiple support rods (204).

3. The telescopic drone propeller arm according to claim 1, characterized in that: Limiting blocks (11) are fixedly connected to both sides of the multiple movable rods (9), and multiple sliding rods (12) are fixedly connected at equal intervals around the outer periphery of the hollow column (3). The multiple limiting blocks (11) are slidably connected to the outer side of the corresponding sliding rods (12).

4. The telescopic drone propeller arm according to claim 1, characterized in that: A radar life detector (13) is fixedly connected to the bottom front side of the hollow base (4), and a camera (16) is provided at the bottom of the hollow base (4). The radar life detector (13), the camera (16) and the servo motor (5) are all electrically connected to an external remote control.

5. The telescopic drone propeller arm according to claim 1, characterized in that: The hollow base (4) has connecting rods (18) fixedly connected to the bottom left and right sides and front and rear ends. The bottom ends of multiple connecting rods (18) are fixedly connected to the same connecting shaft (19). Rollers (20) are rotatably connected to the outer middle of two connecting shafts (19).

6. The telescopic drone propeller arm according to claim 4, characterized in that: The bottom of the hollow base (4) is fixedly connected to a fixing rod (14), and the bottom end of the fixing rod (14) is fixedly connected to a protective shell (15). The camera (16) is set inside the protective shell (15).

7. The telescopic drone propeller arm according to claim 2, characterized in that: The internal dimensions of the plurality of limiting holes (205) are respectively matched with the dimensions of the corresponding limiting rods (203).

8. The telescopic drone propeller arm according to claim 6, characterized in that: The protective shell (15) is threaded with bolts (17) on both the left and right sides, and one end of the bolts (17) passes through the protective shell (15) and the camera (16) in sequence.

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