A detachable ultrasonic obstacle avoidance sensor assembly for a drone

Abstract

This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to a detachable ultrasonic obstacle avoidance sensor assembly for UAVs. It includes a UAV body, which is connected to an ultrasonic obstacle avoider via a mounting assembly. The mounting assembly includes a first connecting rod on the UAV body and a second connecting rod on the ultrasonic obstacle avoider. The first connecting rod has a mounting groove, and the inner wall of the mounting groove has four mounting slots, four through holes, and a circular groove. The four mounting slots and the circular groove communicate with each other, and the circular groove communicates with the through holes. Elastic locking components are installed inside the four through holes. A first connecting plate is fixedly mounted on the outer side of the first connecting rod, and the first connecting plate has threaded grooves. This device can achieve fixation for both lateral and longitudinal forces, improving the fixing effect, and is also easy and simple to install.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to a detachable ultrasonic obstacle avoidance sensor assembly for UAVs. Background Technology

[0002] With the rapid development of technology, drones are being used more and more widely in civilian and commercial fields, such as aerial photography, logistics, agricultural plant protection, and security monitoring. In these application scenarios, drones need to fly in complex environments, making obstacle avoidance a key technology to ensure their safe flight. Currently, obstacle avoidance technologies for drones mainly include infrared sensors, ultrasonic sensors, laser sensors, and visual sensors.

[0003] Ultrasonic obstacle avoidance technology is widely used in drone obstacle avoidance due to its relatively low cost. Its principle is that sound waves reflect off obstacles; by knowing the speed of sound and measuring the time difference between transmission and reception, the distance can be calculated, and thus the actual distance to the obstacle can be determined. However, ultrasonic obstacle avoidance also has certain limitations, such as a relatively short measurement distance, requirements for the reflective surface, and the inability to function properly in special environments such as strong winds. To compensate for these shortcomings, it is often used in conjunction with other sensors such as IMUs, visual sensors, or infrared sensors.

[0004] In practical applications, ultrasonic obstacle avoidance sensors for drones sometimes need to be disassembled and replaced depending on different mission requirements or operating environments. However, existing ultrasonic obstacle avoidance sensor assemblies for drones often present numerous inconveniences during installation and disassembly. Some traditional connection methods are complex in structure, requiring multiple tools to complete the disassembly and installation operations. This is not only time-consuming and labor-intensive, but also extremely inconvenient to carry and use tools in complex environments such as the field. In addition, traditional connection methods may not guarantee the stability of the sensor during flight, easily leading to loosening or even detachment, seriously affecting the obstacle avoidance performance and flight safety of the drone. On the other hand, frequently replacing the entire obstacle avoidance sensor assembly is costly and not conducive to the efficient use of resources and reducing operating costs.

[0005] To address this, we propose a detachable ultrasonic obstacle avoidance sensor assembly for UAVs. This device can achieve fixation by lateral and longitudinal forces, improving the fixation effect, while also being easy and simple to install. Utility Model Content

[0006] The purpose of this invention is to provide a detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles (UAVs). This device can achieve fixation by lateral and longitudinal forces, improving the fixation effect, while being easy and simple to install.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles (UAVs) includes a UAV body, which is connected to an ultrasonic obstacle avoider via a mounting assembly.

[0009] The mounting assembly includes a first connecting rod mounted on the UAV body and a second connecting rod mounted on the ultrasonic obstacle avoider. The first connecting rod has a mounting groove, and the inner wall of the mounting groove has four mounting slots, four through holes, and a circular groove. The four mounting slots and the circular groove communicate with each other, and the circular groove communicates with the through holes. An elastic locking assembly is installed inside each of the four through holes. A first connecting plate is fixedly mounted on the outer side of the first connecting rod, and the first connecting plate has a threaded groove. An arc-shaped slider matching the mounting slots and the circular groove is fixedly mounted on the outer side of the second connecting rod, and the arc-shaped slider has a locking hole. A movable plate is movably mounted on the outer side of the second connecting rod. A second connecting plate and a third connecting plate are located at the bottom of the movable plate. The second connecting plate is threadedly connected to the threaded groove. The third connecting plate has a first undulating groove, and the elastic locking assembly rolls inside the first groove.

[0010] Furthermore, the elastic locking assembly includes a movable rod movably disposed inside the through hole, a ball bearing is rotatably disposed on the top of the movable rod, and a spring is sleeved on the movable rod, the spring being located between the ball bearing and the first connecting rod.

[0011] Furthermore, the movable rod matches the through hole.

[0012] Furthermore, the ball bearing and the first groove are provided with smooth surfaces.

[0013] Furthermore, the second connecting disc has threads on its outer side, and the threads match the threaded groove.

[0014] Furthermore, the width of the arc-shaped slider matches the mounting groove, and the height of the arc-shaped slider matches the circular groove.

[0015] Furthermore, a sealing layer is provided on the second connecting rod.

[0016] The technical effects achieved by this utility model are as follows:

[0017] The second connecting rod enters the mounting groove on the first connecting rod. At this time, the arc-shaped slider slides inside the mounting groove. When it slides into the circular groove, the second connecting rod rotates. At this time, the arc-shaped slider and the mounting groove are misaligned to form a longitudinal lock. Then, the movable plate rotates on the second connecting rod. The movable plate drives the second connecting plate into the threaded groove for locking. During rotation, the elastic locking component slides up and down inside the first groove, causing the elastic locking component to move down into the locking hole on the arc-shaped slider for lateral locking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a structural diagram of the installation components of this utility model when connected;

[0020] Figure 3 This is a schematic diagram of the structure of the first connecting rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the second connecting rod of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. UAV body; 2. Ultrasonic obstacle avoider; 3. First connecting rod; 4. Second connecting rod; 5. Mounting slot; 6. Mounting slide; 7. Through hole; 8. Circular groove; 9. First connecting plate; 10. Threaded groove; 11. Arc-shaped slider; 12. Locking hole; 13. Movable plate; 14. Second connecting plate; 15. Third connecting plate; 16. First slide; 17. Movable rod; 18. Ball bearing; 19. Spring. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figures 1-4 As shown, a detachable ultrasonic obstacle avoidance sensor assembly for drones includes a drone body 1, which is connected to an ultrasonic obstacle avoider 2 via an installation assembly.

[0026] The mounting components include a first connecting rod 3 mounted on the UAV body 1 and a second connecting rod 4 mounted on the ultrasonic obstacle avoider 2. The first connecting rod 3 has a mounting groove 5, and the inner wall of the mounting groove 5 has four mounting slides 6, four through holes 7, and a circular groove 8. The four mounting slides 6 and the circular groove 8 are connected, and the circular groove 8 is connected to the through holes 7. The four through holes 7 are equipped with elastic locking components. A first connecting plate 9 is fixedly mounted on the outside of the first connecting rod 3. The first connecting plate 9 has a threaded groove 10. An arc-shaped slider 11 that matches the mounting slides 6 and the circular groove 8 is fixedly mounted on the outside of the second connecting rod 4. The arc-shaped slider 11 has a locking hole 12. A movable plate 13 is movably mounted on the outside of the second connecting rod 4. A second connecting plate 14 and a third connecting plate 15 are mounted at the bottom of the movable plate 13. The second connecting plate 14 is threadedly connected to the threaded groove 10. The third connecting plate 15 has a first slide 16 that moves up and down. The elastic locking components roll inside the first slide 16.

[0027] The ultrasonic obstacle avoidance device 2 includes a sensor. The piezoelectric ceramic transducer inside the sensor generates high-frequency sound waves (usually 40kHz, inaudible to the human ear). The sound waves propagate forward in a conical beam and are reflected after encountering an obstacle. The same transducer (or a dedicated receiver) captures the reflected sound wave signal. The distance is calculated by measuring the time difference between the transmitted and received echoes. This is existing technology and will not be elaborated on here.

[0028] Meanwhile, the elastic locking assembly includes a movable rod 17 movably disposed inside the through hole 7, a ball bearing 18 rollingly disposed on the top of the movable rod 17, and a spring 19 sleeved on the movable rod 17. The spring 19 is located between the ball bearing 18 and the first connecting rod 3. When the ball bearing 18 rolls inside the first slide groove 16, it moves downward, thereby causing the movable rod 17 to move up and down inside the first through hole 7 to lock and unlock.

[0029] The movable rod 17 is matched with the through hole 7. This arrangement allows the movable rod 17 to move inside the first through hole 7 without getting stuck.

[0030] The ball bearing 18 and the first groove 16 are provided with smooth surfaces, which can reduce friction and enable them to roll.

[0031] Meanwhile, the second connecting plate 14 has threads on its outer side, which match the threaded groove 10, allowing the second connecting plate 14 to be installed and locked.

[0032] The width of the arc-shaped slider 11 matches the mounting groove 6, and the height of the arc-shaped slider 11 matches the circular groove 8. This arrangement allows the arc-shaped slider 11 to move inside the mounting groove 6 and to lock into the circular groove 8.

[0033] The second connecting rod 4 is equipped with a sealing layer to prevent moisture from entering and corroding internal components.

[0034] The working principle of this utility model is as follows: First, when installing the ultrasonic obstacle avoidance device 2, the second connecting rod 4 is inserted into the mounting groove 5 on the first connecting rod 3. At this time, the arc-shaped slider 11 slides inside the mounting groove 6. When it slides to the circular groove 8, the second connecting rod 4 is rotated. At this time, the arc-shaped slider 11 and the mounting groove 6 are misaligned to form a longitudinal lock. Then, the movable disk 13 is rotated on the second connecting rod 4. The movable disk 13 drives the second connecting disk 14 to enter the threaded groove 10 for locking. When rotating, the elastic locking component slides up and down inside the first groove 16, causing the elastic locking component to move down into the locking hole 12 on the arc-shaped slider 11 for lateral locking.

[0035] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles (UAVs), comprising a UAV body (1), wherein the UAV body (1) is connected to an ultrasonic obstacle avoider (2) via an installation assembly; Its features are: The mounting assembly includes a first connecting rod (3) mounted on the UAV body (1) and a second connecting rod (4) mounted on the ultrasonic obstacle avoider (2). The first connecting rod (3) has a mounting groove (5). The inner wall of the mounting groove (5) has four mounting slides (6), four through holes (7), and a circular groove (8). The four mounting slides (6) and the circular groove (8) are connected. The circular groove (8) is connected to the through holes (7). Elastic locking components are installed inside the four through holes (7). A first connecting plate (9) is fixedly mounted on the outer side of the first connecting rod (3). The upper part has a threaded groove (10), and the outer side of the second connecting rod (4) is fixedly provided with an arc-shaped slider (11) that matches the mounting slide (6) and the circular groove (8). The arc-shaped slider (11) has a locking hole (12), and the outer side of the second connecting rod (4) is movably provided with a movable disk (13). The bottom of the movable disk (13) is provided with a second connecting disk (14) and a third connecting disk (15). The second connecting disk (14) is threadedly connected to the threaded groove (10), and the third connecting disk (15) has a first slide groove (16) that undulates up and down. The elastic locking component rolls inside the first slide groove (16).

2. The detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 1, characterized in that: The elastic locking assembly includes a movable rod (17) movably disposed inside the through hole (7), a ball bearing (18) is rotatably disposed on the top of the movable rod (17), and a spring (19) is sleeved on the movable rod (17), the spring (19) being located between the ball bearing (18) and the first connecting rod (3).

3. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 2, characterized in that: The movable rod (17) is matched with the through hole (7).

4. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 2, characterized in that: The ball (18) and the first groove (16) are provided with smooth surfaces.

5. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 1, characterized in that: The second connecting disc (14) has a thread on its outer side, and the thread matches the threaded groove (10).

6. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 1, characterized in that: The width of the arc-shaped slider (11) matches the mounting groove (6), and the height of the arc-shaped slider (11) matches the circular groove (8).

7. A detachable ultrasonic obstacle avoidance sensor assembly for unmanned aerial vehicles according to claim 1, characterized in that: A sealing layer is provided on the second connecting rod (4).

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