Outer protection structure of unmanned aerial vehicle
By designing an external protective structure for drones, using a polygonal mesh structure and ball bearing sliding connections, the problem of poor drone protection was solved, resulting in improved impact resistance and reduced maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING INST OF XIAN HIGHWAY RES INST
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-21
AI Technical Summary
Existing drones, due to the use of lightweight materials, have poor protective effects, insufficient impact resistance, are easily damaged, have high maintenance costs, and their structures are not optimized for collision and drop scenarios.
Design an external protective structure for a drone, including a protective cover, a support component, and a protective net component. A polygonal grid structure is formed by using a ring support plate, a mounting plate, a buffer block, and a protective connecting rod. A ball bearing sliding connection is used to disperse the impact force and reduce friction and jamming.
By dispersing impact force through a polygonal mesh structure and combining it with ball bearing sliding force relief, instantaneous impact damage is reduced. This method is suitable for multi-angle collision scenarios, reduces friction and jamming, and is suitable for continuous collisions in complex terrain, thereby improving the protective performance of drones.
Smart Images

Figure CN224146194U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to an external protective structure for UAVs. Background Technology
[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and their own program control devices, or operated autonomously by an onboard computer, either completely or intermittently.
[0003] A drone is an unmanned aerial vehicle (UAV). It uses aerodynamics to overcome its own weight, can fly autonomously or remotely, and can be recovered and used multiple times. It has a wide range of applications in both civilian and military fields.
[0004] To increase their weight, most current drones are made of lightweight materials, resulting in poor protection. Although they reduce weight, they lack impact resistance and are easily damaged in collisions. Furthermore, their airframe structure is designed primarily for aerodynamic efficiency and is not optimized for collisions or falls, leading to high maintenance costs. Utility Model Content
[0005] The purpose of this utility model is to provide an external protective structure for unmanned aerial vehicles (UAVs) that solves the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an external protective structure for a drone, comprising a protective cover and a drone body disposed inside the protective cover, wherein the protective cover comprises a support component and protective net components disposed above and below the support component.
[0007] The support assembly includes an annular support plate, with a mounting plate fixed to the inner side of the annular support plate and an edging fixed to the outer side of the annular support plate. The mounting plate connects to the main body of the drone, and the edging can be made of rubber or other cushioning materials to provide some cushioning.
[0008] The protective net assembly includes several buffer blocks and several protective connecting rods. Adjacent buffer blocks are connected by protective connecting rods, and the interconnected buffer blocks and protective connecting rods form a polygon. By setting up the buffer blocks and protective connecting rods to form the protective net assembly, it effectively protects the main body of the drone.
[0009] As a preferred embodiment of this utility model, the mounting plate is provided with a mounting groove, which is fixed to the propeller base of the drone body to achieve connection with the drone body. The mounting is detachable for easy disassembly and assembly later.
[0010] In a preferred embodiment of this invention, the buffer block includes a connecting block and ball bearings, with the ball bearings slidably connected to the outer side of the connecting block. The addition of ball bearings reduces friction.
[0011] Preferably, the connecting block is triangular, with a protective connecting rod connected to each corner. The triangular connecting block facilitates the connection of the protective connecting rod at its corners.
[0012] Preferably, the polygon is a hexagon, a regular pentagon, or a trapezoid. The regular pentagon and trapezoid are close to the support assembly, and the ends of the protective connecting rods on the regular pentagon and trapezoid are connected to the annular support plate. The protective connecting rods and the annular support plate are detachably fixed for easy assembly and disassembly.
[0013] As a preferred embodiment of this invention, the annular support plate and the mounting plate are integrally formed to improve the overall stability of the support.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention uses a polygonal grid structure to disperse impact force through geometric deformation, combined with the sliding force relief of the ball bearings, to reduce the damage to the body from instantaneous impact. It is especially suitable for multi-angle collision scenarios, and the ball bearing design reduces friction and jamming, making it suitable for continuous collisions in complex terrain. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;
[0018] Figure 3 This is a schematic diagram of the main structure of the drone to be dismantled according to this utility model;
[0019] Figure 4 This is a schematic diagram of the support component structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the protective netting component structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the buffer block structure of this utility model.
[0022] In the diagram: 1. Support component; 101. Annular support plate; 102. Mounting plate; 1021. Mounting groove; 103. Edge banding; 2. Protective net assembly; 201. Buffer block; 2011. Connecting block; 2012. Ball bearing; 202. Protective connecting rod. Detailed Implementation
[0023] 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.
[0024] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] Please see Figure 1-2 This utility model provides a technical solution: an external protective structure for a drone, including a protective cover and a drone body 3 disposed inside the protective cover. The protective cover includes a support component 1 and protective net components 2 disposed above and below the support component 1.
[0027] Please see Figure 3-4 The support assembly 1 includes an annular support plate 101, with a mounting plate 102 fixed to the inner side of the annular support plate 101 and an edging 103 fixed to the outer side of the annular support plate 101. The mounting plate 102 connects to the main body of the drone, and the edging 103 can be made of banana or other cushioning materials to provide cushioning.
[0028] Please see Figure 3 and 5 The protective net assembly 2 includes several buffer blocks 201 and several protective connecting rods 202. Adjacent buffer blocks 201 are connected by protective connecting rods 202, and the interconnected buffer blocks 201 and protective connecting rods 202 form a polygon. By setting the buffer blocks 201 and protective connecting rods 202 to form the protective net assembly 2, it serves to protect the main body of the drone.
[0029] Furthermore, the mounting plate 102 is provided with a mounting groove 1021, which is fixed to the propeller base of the drone body 3 to achieve connection with the drone body 3. It is detachable and fixed to facilitate disassembly and assembly later.
[0030] For further details, please refer to Figure 6 The buffer block 201 includes a connecting block 2011 and ball bearings 2012, with the ball bearings 2012 slidably connected to the outside of the connecting block 2011. The ball bearings 2012 reduce friction.
[0031] Furthermore, the connecting block 2011 is triangular, with a protective connecting rod 202 connected to each corner. The triangular connecting block 2011 facilitates the connection of the protective connecting rod 202 at its corners.
[0032] For further details, please refer to Figure 1 , 2 3 and 5, wherein the polygons are hexagons, regular pentagons, and trapezoids, with the regular pentagons and trapezoids close to the support assembly 1, and the ends of the protective connecting rods 202 on the regular pentagons and trapezoids connected to the annular support plate 101. The protective connecting rods 202 and the annular support plate 101 are detachably fixed for easy assembly and disassembly.
[0033] Furthermore, the annular support plate 101 and the mounting plate 102 are integrally formed to improve the overall stability of the support.
[0034] In summary, this structure uses an annular support plate 101 and a mounting plate 102 integrally formed to provide a rigid support foundation. It is detachably connected to the propeller base of the UAV body 3 via a mounting groove 1021, ensuring the stability of the main body. The edging 103 wraps around the outside of the support plate, absorbing initial impact energy through material deformation upon collision. The ball bearings 2012 reduce sliding friction during collision, allowing the UAV body 3 to slide and dissipate force after impact, preventing rigid jamming. Impact force is dispersed through rod deformation, with the pentagonal and trapezoidal areas close to the support plate, further transmitting force to the annular support plate 101 and preventing localized stress concentration.
[0035] This structure can be applied to tunnel and bridge inspection and early warning of geological disasters on slopes.
[0036] Tunnel and bridge inspection: The protective cover prevents the drone body from colliding with the tunnel walls, cables, etc. When passing through narrow gaps, it uses external pulleys to maintain stability and prevents tipping due to power imbalance. It enables millimeter-level detection of cracks, water seepage, and other potential hazards.
[0037] Slope geological disaster early warning: In rainy and foggy weather, the protective cover can reduce the risk of the drone body falling off the cliff due to wind, monitor changes in soil moisture content, and provide timely feedback on landslide early warning.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An external protective structure for unmanned aerial vehicles (UAVs), characterized in that: It includes a protective cover and a drone body (3) disposed inside the protective cover. The protective cover includes a support component (1) and a protective net component (2) disposed above and below the support component (1). The support assembly (1) includes an annular support plate (101), an mounting plate (102) is fixed to the inner side of the annular support plate (101), and an edge banding (103) is fixed to the outer side of the annular support plate (101). The protective net assembly (2) includes several buffer blocks (201) and several protective connecting rods (202). Each adjacent buffer block (201) is connected to a protective connecting rod (202), and the interconnected buffer blocks (201) and protective connecting rods (202) form a polygon.
2. The unmanned aerial vehicle outer protection structure according to claim 1, characterized in that: The mounting plate (102) has a mounting groove (1021) which is fixed to the propeller base of the UAV body (3).
3. The unmanned aerial vehicle outer protection structure according to claim 1, characterized in that: The buffer block (201) includes a connecting block (2011) and a ball (2012), with the ball (2012) slidably connected to the outside of the connecting block (2011).
4. The outer protection structure of the unmanned aerial vehicle according to claim 3, wherein: The connecting block (2011) is triangular and each corner is connected to a protective connecting rod (202).
5. The unmanned aerial vehicle outer protection structure according to claim 1, characterized in that: The polygons are hexagons, regular pentagons and trapezoids, with the regular pentagons and trapezoids close to the support component (1), and the ends of the protective connecting rods (202) on the regular pentagons and trapezoids are connected to the annular support plate (101).
6. The unmanned aerial vehicle outer protection structure according to claim 1, characterized in that: The annular support plate (101) and the mounting plate (102) are integrally formed.