Collision buffering device for unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle collision buffering device, and belongs to the field of unmanned aerial vehicles. The buffering device comprises an unmanned aerial vehicle body and a plurality of protective shells annularly surrounding the outer side of the unmanned aerial vehicle body; the protective shell is provided with a buffering mechanism connected with the unmanned aerial vehicle body, and the buffering mechanism is fixedly connected to an elastic rubber pad on the inner side of the protective shell, an elastic honeycomb-shaped metal plate fixedly connected to the inner side of the elastic rubber pad and an elastic buffering piece fixedly arranged on the inner side of the elastic honeycomb-shaped metal plate and connected with the unmanned aerial vehicle body. And collision energy can be absorbed and dispersed in different stages through the multi-layer composite buffering mechanism, and the buffering effect is greatly improved. The elastic rubber pad, the elastic honeycomb-shaped metal plate and the elastic buffering piece work cooperatively, and electronic equipment, a battery and other components in the unmanned aerial vehicle are effectively protected against damage. Meanwhile, the honeycomb structure has a high strength-weight ratio, the weight cannot be increased too much while the buffering effect is guaranteed, and the flight performance of the unmanned aerial vehicle cannot be greatly affected.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, specifically a UAV collision buffer device. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, rely on radio remote control equipment and onboard program control devices to achieve unmanned flight. During flight, UAVs are susceptible to damage from impacts with external objects, which can severely reduce their lifespan, lead to mission failure, or even cause safety accidents.

[0003] To address the issue of drone collisions, Chinese utility model patent CN220076683U discloses a drone collision avoidance device. This device incorporates a collision avoidance ring, which can protect the propellers from damage during a collision to a certain extent. Simultaneously, using an infrared ranging sensor on the outer wall, it sends an alarm to the remote controller or other control terminal via the drone's internal communication device when a collision is imminent or near, alerting the operator to take timely evasive action and reducing the probability of a collision.

[0004] However, this anti-collision device can only prevent collisions and protect the propeller blades, but it cannot effectively buffer or offset the powerful impact force generated at the moment of collision. When a collision occurs, the impact force will still be directly transmitted to the inside of the drone, greatly increasing the risk of damage to internal parts, making it difficult to fundamentally guarantee the safety and integrity of the drone in a collision accident.

[0005] Therefore, this application provides a drone collision buffer device to solve the above problems. Utility Model Content

[0006] This application provides a drone collision buffer device, which aims to solve the problems of poor drone collision buffering effect in the prior art as mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a drone collision buffer device, comprising a drone body and a plurality of protective shells that surround the outside of the drone body;

[0008] To reduce the impact force of a collision protective shell on the drone body, the protective shell is equipped with a buffer mechanism connected to the drone body. This buffer mechanism includes an elastic rubber pad fixedly connected to the inner side of the protective shell, an elastic honeycomb metal plate fixedly connected to the inner side of the elastic rubber pad, and an elastic buffer element fixedly installed inside the elastic honeycomb metal plate and connected to the drone body. When the drone collides, the protective shell first contacts the external object. As the collision continues, the impact force is transmitted to the buffer mechanism. The elastic rubber pad begins to deform, absorbing some energy at the moment of impact due to its good flexibility and elasticity. Subsequently, the elastic honeycomb metal plate is compressed, and the thin walls of its honeycomb metal structure undergo plastic deformation. The hexagonal units are gradually flattened, and the unit walls bend and fold, converting the collision energy into the deformation energy of the metal, further absorbing a large amount of energy. Finally, the elastic buffer element stores and releases energy during compression, buffering the remaining impact force and minimizing the impact force ultimately transmitted to the drone body. After a collision, components such as elastic buffers, elastic rubber pads, and elastic honeycomb metal plates will gradually return to their original shape using their own elasticity, preparing for the next possible collision.

[0009] The elastic buffer includes a fixed sleeve, a limiting slide plate slidably disposed within the fixed sleeve, a buffer spring disposed within the fixed sleeve and connected to the limiting slide plate, and a guide rod inserted into the fixed sleeve and fixedly connected to the limiting slide plate. One end of the guide rod, away from the limiting slide plate, is fixedly connected to the elastic honeycomb metal plate. The elastic buffer absorbs some energy from the elastic honeycomb metal plate and further buffers the remaining impact force, minimizing the impact force ultimately transmitted to the drone body, thus more effectively protecting the internal components of the drone from damage. Its structure is simple, consisting of a fixed sleeve, a limiting slide plate, a buffer spring, and a guide rod, making it easy to manufacture and install.

[0010] Preferably, to facilitate fixing the fixing sleeve to the drone body: a square rod is fixedly connected to the upper end of the drone body, and a mounting base that is fixedly connected to the fixing sleeve is fitted onto the square rod. A knurled screw that abuts against the upper end of the mounting base is threaded onto the square rod. The square rod, mounting base, and knurled screw work together to easily fix the fixing sleeve to the drone body. The assembly and disassembly process is simple and quick, facilitating the installation, disassembly, and maintenance of the buffer device, thus improving ease of use and efficiency.

[0011] Preferably, to facilitate the fitting of the mounting base onto the square rod, the top of the square rod is tapered. This tapered top greatly improves the ease of fitting the mounting base onto the square rod. During installation, there is no need to spend a lot of time and effort precisely aligning the square rod with the square groove of the mounting base, which significantly shortens installation time and improves installation efficiency.

[0012] Preferably, the protective shell is made of lightweight, high-strength carbon fiber material. Lightweight, high-strength carbon fiber material has good wear resistance and impact resistance, which can reduce its weight and minimize its impact on the drone's flight performance while ensuring the protective shell has a certain level of protection.

[0013] Preferably, to reduce the drag on the drone's movement caused by the protective shell, the protective shell is designed with a streamlined shape. A streamlined protective shell not only reduces flight drag, lowers the drone's energy consumption during flight, and improves flight efficiency and endurance, but also guides the dispersion of impact forces upon collision, preventing them from concentrating at a single point and causing severe damage to the drone, further improving the drone's safety and stability.

[0014] Preferably, to further improve the protective effect of the protective shell, several raised rubber buffer blocks are provided on the outer side of the protective shell. These rubber buffer blocks can further absorb energy in the initial stage of a collision, increasing the buffering effect and improving the protective capability of the shell. They can contact the external object before the shell itself at the moment of impact, reducing the direct impact on the shell and thus better protecting the internal components of the drone.

[0015] This application utilizes a multi-layered composite buffer mechanism to absorb and disperse collision energy at different stages, significantly improving the buffering effect. Elastic rubber pads, elastic honeycomb metal plates, and elastic buffer components work together to effectively protect the internal electronic equipment, batteries, and other components of the drone from damage. Simultaneously, the honeycomb structure has a high strength-to-weight ratio, ensuring effective buffering without adding excessive weight and minimizing impact on the drone's flight performance.

[0016] This application utilizes an elastic buffer component that absorbs some energy from the elastic honeycomb metal plate and further cushions the remaining impact force, minimizing the impact force ultimately transmitted to the drone's body and thus more effectively protecting the drone's internal components from damage. Its structure is simple, consisting of a fixing sleeve, a limiting slide plate, a buffer spring, and a guide rod, making it easy to manufacture and install.

[0017] The streamlined protective shell of this application not only reduces flight drag, lowers energy consumption during drone flight, and improves flight efficiency and endurance, but also guides the impact force to disperse during a collision, preventing it from concentrating at a single point and causing serious damage to the drone, thus further improving the drone's safety and stability.

[0018] The rubber buffer block of this application can further absorb energy in the initial stage of a collision, increasing the cushioning effect and improving the protective capability of the shell. It can make contact with the external object before the shell at the moment of impact, reducing the direct impact on the shell and thus better protecting the internal components of the drone. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a collision buffer device for unmanned aerial vehicles (UAVs).

[0020] Figure 2 This is a schematic diagram of the structure of an elastic buffer component;

[0021] Figure 3 This is an exploded view of the square rod, mounting base, and knurled screws.

[0022] In the picture:

[0023] 1. Unmanned aerial vehicle body; 11. Square rod; 2. Protective shell; 21. Buffer block; 3. Buffer mechanism; 31. Elastic rubber pad; 32. Elastic honeycomb metal plate; 33. Elastic buffer component; 331. Fixing sleeve; 332. Limiting slide plate; 333. Buffer spring; 334. Guide rod; 335. Mounting base; 336. Knurled screw. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] This embodiment provides a drone collision buffer device, such as Figure 1-3 As shown, the buffer device includes a drone body 1 and multiple protective shells 2 that are arranged in a ring around the outside of the drone body 1.

[0026] To reduce the impact force generated by the protective shell 2 on the drone body 1 upon collision, a buffer mechanism 3 connected to the drone body 1 is installed on the protective shell 2. The buffer mechanism 3 is fixedly connected to an elastic rubber pad 31 on the inner side of the protective shell 2, an elastic honeycomb metal plate 32 fixedly connected to the inner side of the elastic rubber pad 31, and an elastic buffer component 33 fixedly installed on the inner side of the elastic honeycomb metal plate 32 and connected to the drone body 1. This multi-layered composite buffer mechanism 3 can absorb and disperse collision energy at different stages, greatly improving the buffering effect. The elastic rubber pad 31, the elastic honeycomb metal plate 32, and the elastic buffer component 33 work together to effectively protect the internal electronic equipment, batteries, and other components of the drone from damage. Simultaneously, the honeycomb structure has a high strength-to-weight ratio, ensuring the buffering effect without adding excessive weight and minimizing the impact on the drone's flight performance. When the drone collides, the protective shell 2 first contacts the external object. As the collision continues, the impact force is transmitted to the buffer mechanism 3. The elastic rubber pad 31 begins to deform; due to its good flexibility and elasticity, it can absorb some energy at the moment of impact. Subsequently, the elastic honeycomb metal plate 32 is compressed, causing plastic deformation of its thin-walled honeycomb structure. The hexagonal units are gradually flattened, and the unit walls bend and fold, converting the collision energy into the deformation energy of the metal and further absorbing a large amount of energy. Finally, the elastic buffer 33 stores and releases energy during the compression process, buffering the remaining impact force and minimizing the impact force ultimately transmitted to the drone body. After the collision, the elastic buffer 33, elastic rubber pad 31, and elastic honeycomb metal plate 32 gradually return to their original shape using their elasticity, preparing for the next possible collision.

[0027] The elastic buffer 33 includes a fixed sleeve 331, a limiting slide plate 332 slidably disposed within the fixed sleeve 331, a buffer spring 333 disposed within the fixed sleeve 331 and connected to the limiting slide plate 332, and a guide rod 334 inserted into the fixed sleeve 331 and fixedly connected to the limiting slide plate 332. One end of the guide rod 334, away from the limiting slide plate 332, is fixedly connected to the elastic honeycomb metal plate 32. The elastic buffer 33 absorbs some energy from the elastic honeycomb metal plate 32, further buffering the remaining impact force and minimizing the impact force ultimately transmitted to the drone body, thus more effectively protecting the internal components of the drone from damage. Its structure is simple, consisting of a fixed sleeve 331, a limiting slide plate 332, a buffer spring 333, and a guide rod 334, making it easy to manufacture and install. When the drone collides, the elastic honeycomb metal plate 32 is compressed and deformed, which drives the limiting slide plate 332 to slide within the fixed sleeve 331 and compress the buffer spring 333 via the guide rod 334. The buffer spring 333 stores energy during compression. When the impact force decreases, the buffer spring 333 releases energy to buffer the remaining impact force, thereby greatly reducing the impact force transmitted to the unmanned vehicle body 1.

[0028] To facilitate the fixing of the fixing sleeve 331 to the drone body 1: a square rod 11 is fixedly connected to the upper end of the drone body 1. A mounting base 335, which is fixedly connected to the fixing sleeve 331, is fitted onto the square rod 11. A knurled screw 336, which abuts against the upper end of the mounting base 335, is threaded onto the square rod 11. The square rod 11, mounting base 335, and knurled screw 336 work together to easily fix the fixing sleeve 331 to the drone body 1. The assembly and disassembly process is simple and quick, facilitating the installation, disassembly, and maintenance of the buffer device, thus improving ease of use and efficiency. During installation, the square groove on the mounting base 335 is directly fitted onto the square rod 11. Due to the fit between the square rod 11 and the square groove, the mounting base 335 is prevented from rotating on the square rod 11. Then, the knurled screw 336 is threaded onto the square rod 11, with its lower end abutting against the upper end of the mounting base 335, thereby fixing the mounting base 335 to the square rod 11. During disassembly, simply unscrew the knurled screw 336 to remove the mounting base 335 from the square rod 11.

[0029] To facilitate the fitting of the mounting base 335 onto the square rod 11, the top of the square rod 11 is tapered. This tapered top greatly improves the ease of fitting the mounting base 335 onto the square rod 11. During installation, there is no need to spend a lot of time and effort precisely aligning the square rod 11 with the square groove of the mounting base 335, which significantly shortens installation time and improves installation efficiency. When fitting the mounting base 335 onto the square rod 11, because the top of the square rod 11 is tapered, its top dimension is smaller than the size of the square groove of the mounting base 335. When the square groove of the mounting base 335 contacts the top of the square rod 11, even if there is a certain initial positional deviation, the tapered top acts as a guide, allowing the mounting base 335 to gradually slide into the appropriate position on the square rod 11 along the tapered surface, ultimately achieving accurate fitting of the mounting base 335 onto the square rod 11.

[0030] Protective shell 2 is made of lightweight, high-strength carbon fiber. This material possesses excellent wear resistance and impact resistance, ensuring a certain level of protection while reducing its weight and minimizing its impact on the drone's flight performance. The molecular structure of carbon fiber exhibits high strength and high modulus, enabling it to withstand significant external forces without easily breaking. Upon impact, the intermolecular interactions of the carbon fiber disperse and absorb the impact force, preventing concentrated damage to the protective shell 2 and thus protecting the drone's internal components.

[0031] To reduce drag on the drone's movement, the protective shell 2 is designed with a streamlined shape. This streamlined design not only reduces drag, lowers energy consumption during flight, and improves flight efficiency and endurance, but also guides the impact force during a collision, preventing it from concentrating at a single point and causing severe damage, thus further enhancing the drone's safety and stability. During flight, the streamlined shell 2 allows air to flow more smoothly over its surface, reducing turbulence and drag. In the event of a collision, the streamlined shape disperses the impact force along the surface, preventing it from concentrating in a localized area and reducing the risk of serious damage to the drone.

[0032] To further enhance the protective effect of the protective shell 2, several raised rubber buffer blocks 21 are provided on the outer side of the protective shell 2. These rubber buffer blocks 21 can further absorb energy in the initial stage of a collision, increasing the buffering effect and improving the protective capability of the protective shell 2. They can contact the external object before the protective shell 2 at the moment of impact, reducing the direct impact on the protective shell 2 and thus better protecting the internal components of the drone. When the drone collides, the rubber buffer blocks 21 are the first to contact the external object. Due to the good elasticity of rubber, it deforms at the moment of impact, converting the collision energy into the elastic potential energy of the rubber, thereby absorbing part of the impact force. During the deformation process, the friction and adhesion between rubber molecules also consume some energy, further enhancing the buffering effect.

[0033] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0034] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A drone collision buffer device, comprising a drone body (1) and a plurality of protective shells (2) surrounding the outside of the drone body (1). Its features are: The protective shell (2) is provided with a buffer mechanism (3) connected to the unmanned aerial vehicle body (1). The buffer mechanism (3) is fixedly connected to an elastic rubber pad (31) on the inner side of the protective shell (2), an elastic honeycomb metal plate (32) fixedly connected to the inner side of the elastic rubber pad (31), and an elastic buffer member (33) fixedly disposed on the inner side of the elastic honeycomb metal plate (32) and connected to the unmanned aerial vehicle body (1). The elastic buffer (33) includes a fixed sleeve (331), a limiting slide plate (332) slidably disposed in the fixed sleeve (331), a buffer spring (333) disposed in the fixed sleeve (331) and connected to the limiting slide plate (332), and a guide rod (334) inserted into the fixed sleeve (331) and fixedly connected to the limiting slide plate (332). The end of the guide rod (334) away from the limiting slide plate (332) is fixedly connected to the elastic honeycomb metal plate (32).

2. The UAV collision buffer device according to claim 1, characterized in that: The upper end of the unmanned aerial vehicle body (1) is fixedly connected to a square rod (11), and a mounting base (335) fixedly connected to the fixed sleeve (331) is fitted on the square rod (11). A knurled screw (336) that abuts against the upper end of the mounting base (335) is threaded into the square rod (11).

3. The UAV collision buffer device according to claim 2, characterized in that: The top of the square rod (11) is tapered.

4. The UAV collision buffer device according to claim 1, characterized in that: The protective shell (2) is made of lightweight and high-strength carbon fiber material.

5. The UAV collision buffer device according to claim 1, characterized in that: The protective shell (2) is designed with a streamlined shape.

6. The UAV collision buffer device according to claim 1, characterized in that: The outer side of the protective shell (2) is provided with several protruding rubber buffer blocks (21).

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