Modular multi-rotor unmanned aerial vehicle
By introducing structures such as foam plates, springs, and support rods into modular multi-rotor drones, the impact force problem during drone landing is solved, protecting the drone modules, preventing rotor damage, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-03
AI Technical Summary
Existing modular multi-rotor drones are susceptible to significant impact forces during landing, leading to module damage, especially to the fuselage and rotors. They are also prone to tipping over, causing damage to the rotors upon contact with the ground.
The design incorporates a structure using sponge boards, springs, support rods, and brackets. Soft materials are used to reduce impact force, enhance the rigidity of the support structure, prevent the rotor from contacting the ground, and the design includes a detachable support structure to protect the drone module.
It effectively reduces the impact force during drone landing, prevents rotor damage, extends drone usage time, and improves the safety and reliability of drone landing.
Smart Images

Figure CN224075790U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of unmanned aerial vehicles (UAVs), and in particular to a modular multi-rotor UAV. Background Technology
[0002] In recent years, with the continuous development of drone technology and its increasingly wide range of applications, modular multi-rotor drones have been widely used in various fields such as civilian, military, and scientific research. Modular design makes the assembly and maintenance of drones more convenient, especially when it is necessary to quickly replace parts or upgrade technology. Modular design can greatly improve efficiency. Modular multi-rotor drones are usually composed of multiple rotors, airframe, control system, battery, and support structure.
[0003] Despite the significant advantages of modular multi-rotor drones in terms of flight stability and flexibility, some problems still exist in the existing technology, especially during the landing process. When traditional drones land, the impact between the landing ground and the drone generates a large impact force, which may damage various modules of the drone, especially the fuselage and rotors. In addition, in some cases, the drone is prone to tipping over after landing, causing the rotors to come into contact with the ground and causing further damage. Utility Model Content
[0004] This application provides a modular multi-rotor drone that reduces the force experienced by the drone during landing, protects the various modules of the drone, prevents multiple rotors from contacting the ground and being damaged when the drone tilts during landing, and extends the drone's service life.
[0005] To achieve the above objectives, this application adopts the following technical solution: a modular multi-rotor unmanned aerial vehicle (UAV), the UAV comprising:
[0006] Organism;
[0007] Two connecting plates are respectively set on both sides of the body by screws, and two support rods are fixed on one side of each connecting plate. By turning the screws on the two connecting plates, they can be removed from the drone, and the support structure of the drone can be further disassembled.
[0008] Multiple first sleeve rods are fixedly installed on one side of multiple support rods, and a push plate is fixedly installed at one end of each of the multiple first sleeve rods. The force on the two sponge plates is transmitted to the two support rods, which further causes the multiple push plates to slide to the inner wall of the multiple second sleeve rods.
[0009] Multiple second sleeve rods are respectively fixedly sleeved on the outer surface of multiple push plates, and the multiple second sleeve rods are in pairs, with a support rod fixedly installed at one end of each pair of second sleeve rods.
[0010] As a further improvement of this application: a sponge board is fixedly provided on the outer surface of both of the support rods, and the multiple support rods are grouped in pairs. A crossbar is fixedly provided on the outer surface of both groups of support rods. When the drone lands, the two sponge boards will first come into contact with the landing ground. The two sponge boards are soft, and the impact force received by the drone will be transmitted to the two sponge boards. The soft and resilient properties of the two sponge boards will reduce the impact force at this moment. The two groups of support rods are connected together by two crossbars to improve the rigidity of the support structure.
[0011] As a further improvement of this application: a spring is fixedly provided on one side of each of the multiple push plates, and the multiple springs are respectively movably embedded in the inner wall of the multiple second sleeve rods. When the multiple springs are squeezed, they will generate a reverse force, and the multiple springs can slide on the inner wall of the multiple second sleeve rods.
[0012] As a further improvement of this application: hollow cylinders are fixedly provided on the outer surfaces of multiple second sleeve rods, and circular plates are movably embedded in the inner walls of multiple hollow cylinders, and the multiple circular plates can slide on the inner walls of multiple hollow cylinders respectively.
[0013] As a further improvement of this application: hollow cylinders are fixedly provided on the outer surfaces of multiple second sleeve rods, and circular plates are movably embedded in the inner walls of multiple hollow cylinders, and the multiple circular plates can slide on the inner walls of multiple hollow cylinders respectively.
[0014] As a further improvement of this application: the multiple transmission rods are grouped in pairs, and a bracket is fixedly provided at one end of each pair of transmission rods. Multiple base rods are fixedly provided on one side of each of the two brackets. The two base rods with increased distance support the chassis of the UAV, preventing multiple rotors from contacting the ground and causing damage when the UAV tilts over. One end of the multiple base rods is pointed to facilitate contact with the ground.
[0015] As a further improvement of this application: baffles are fixedly embedded in the inner walls of the multiple hollow cylinders, and the multiple baffles respectively limit the multiple circular plates to prevent the multiple circular plates from sliding out of the interior of the multiple hollow cylinders.
[0016] As a further improvement of this application: multiple rotors are installed on one side of the body, and the drone can fly by means of the multiple rotors when using the drone.
[0017] Compared with the prior art, the advantages and positive effects of this application are as follows:
[0018] 1. In this application, when the drone lands, two sponge plates will first contact the landing ground. The two sponge plates are flexible, and the impact force on the drone will be transmitted to the two sponge plates. The soft and resilient properties of the two sponge plates will reduce the impact force at this moment. At this time, the force on the two sponge plates is transmitted to the two support rods, which further causes the multiple push plates to slide to the inner walls of the multiple second set of rods. The multiple push plates and the inner walls of the multiple second set of rods compress multiple springs. When the multiple springs are compressed, they will generate a counterforce, which will reduce the force on the drone during landing and further protect the drone. By turning the screws on the two connecting plates, they can be removed from the drone, and the support structure of the drone can be disassembled. The two sets of support rods are connected together by two crossbars to improve the rigidity of the support structure. Thus, when using the drone, the force on the drone during landing is reduced, and the various modules of the drone are protected.
[0019] 2. In this application, when using the drone, multiple rotors enable the drone to fly. When the drone lands, multiple push plates press down inside multiple second-set rods. These push plates further push the gas inside the second-set rods into multiple hollow cylinders. Multiple circular plates can slide along the inner walls of these hollow cylinders. Driven by the gas, these circular plates slide further along the inner walls of the hollow cylinders. Multiple transmission rods push two supports to move towards the sides of the drone, increasing the distance between the two supports and the sides of the drone. When the drone lands and tilts, multiple base rods at the bottom of the two supports will first contact the ground. One end of each base rod is pointed to facilitate contact with the ground. By increasing the distance between the base rods, the drone is supported, preventing multiple rotors from contacting the ground and causing damage when the drone tilts. Therefore, when the drone lands and tilts, multiple rotors can be prevented from contacting the ground and being damaged, extending the drone's lifespan. Attached Figure Description
[0020] Figure 1 This is a frontal three-dimensional structural diagram of a modular multi-rotor unmanned aerial vehicle proposed in this application.
[0021] Figure 2 This is a side-view stereoscopic structural diagram of a modular multi-rotor unmanned aerial vehicle proposed in this application.
[0022] Figure 3 This is a cross-sectional three-dimensional structural diagram of the second set of rods in a modular multi-rotor UAV proposed in this application.
[0023] Figure 4 This is a cross-sectional three-dimensional structural diagram of the hollow tube in a modular multi-rotor UAV proposed in this application.
[0024] Figure 5 For this application Figure 3 Enlarged view of point A in the middle.
[0025] Legend: 1. Body; 2. Connecting plate; 201. Support rod; 202. Crossbar; 203. First set of rods; 204. Push plate; 205. Second set of rods; 206. Sponge board; 207. Support rod; 208. Spring; 3. Hollow cylinder; 301. Circular plate; 302. Transmission rod; 303. Bracket; 304. Baffle; 305. Base rod; 306. Rotor. Detailed Implementation
[0026] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways than those described herein, and therefore this application is not limited to the specific embodiments disclosed in the following specification.
[0028] Example 1, such as Figures 1 to 5 As shown, this application provides a modular multi-rotor unmanned aerial vehicle (UAV) comprising:
[0029] Body 1;
[0030] Two connecting plates 2 are respectively set on both sides of the body 1 by screws, and two support rods 201 are fixed on one side of each connecting plate 2. By rotating the screws on the two connecting plates 2, they can be removed from the drone, and the support structure of the drone can be further disassembled.
[0031] Multiple first sleeve rods 203 are fixedly installed on one side of multiple support rods 201, and a push plate 204 is fixedly installed at one end of each of the multiple first sleeve rods 203. The force on the two sponge plates 206 is transmitted to the two support rods 207, which further causes the multiple push plates 204 to slide to the inner wall of the multiple second sleeve rods 205.
[0032] Multiple second sleeve rods 205 are fixedly sleeved on the outer surface of multiple push plates 204, and the multiple second sleeve rods 205 are in pairs, with a support rod 207 fixedly installed at one end of each pair of second sleeve rods 205.
[0033] like Figures 1 to 5As shown, sponge plates 206 are fixedly installed on the outer surfaces of both support rods 207. Multiple support rods 201 are grouped in pairs, and crossbars 202 are fixedly installed on the outer surfaces of both groups of support rods 201. When the drone lands, the two sponge plates 206 will first come into contact with the landing ground. The two sponge plates 206 are flexible, and the impact force received by the drone will be transmitted to the two sponge plates 206. The soft and resilient properties of the two sponge plates 206 will reduce the impact force at this moment. The two groups of support rods 201 are connected together by two crossbars 202 to improve the rigidity of the support structure.
[0034] like Figures 1 to 5 As shown, a spring 208 is fixedly installed on one side of each of the multiple push plates 204. The multiple springs 208 are movably embedded in the inner wall of the multiple second sleeve rods 205. When the multiple springs 208 are squeezed, they will generate a reverse force and can slide on the inner wall of the multiple second sleeve rods 205.
[0035] like Figures 1 to 5 As shown, hollow cylinders 3 are fixedly provided on the outer surfaces of multiple second sleeve rods 205, and circular plates 301 are movably embedded in the inner walls of multiple hollow cylinders 3. The multiple circular plates 301 can slide on the inner walls of multiple hollow cylinders 3 respectively.
[0036] like Figures 1 to 5 As shown, a transmission rod 302 is fixedly installed on one side of each of the multiple circular plates 301. The multiple circular plates 301 are pushed by the gas to slide further on the inner wall of the multiple hollow cylinders 3, and the two supports 303 are pushed to move to both sides of the UAV by the multiple transmission rods 302.
[0037] like Figures 1 to 5 As shown, multiple transmission rods 302 are grouped in pairs. One end of each pair of transmission rods 302 is fixedly equipped with a bracket 303. Multiple base rods 305 are fixedly equipped on one side of each bracket 303. The two base rods 305 with increased distance support the drone chassis to prevent multiple rotors 306 from contacting the ground and causing damage when the drone tilts over. One end of the multiple base rods 305 is pointed to facilitate contact with the ground.
[0038] like Figures 1 to 5 As shown, baffles 304 are fixedly embedded in the inner walls of multiple hollow cylinders 3. The multiple baffles 304 respectively limit the multiple circular plates 301 to prevent the multiple circular plates 301 from sliding out of the interior of the multiple hollow cylinders 3.
[0039] like Figures 1 to 5 As shown, multiple rotors 306 are installed on one side of the body 1. When using the drone, the drone can fly by means of multiple rotors 306.
[0040] Working principle: When the drone lands, the two sponge plates 206 first contact the ground. The two sponge plates 206 are flexible, and the impact force on the drone is transmitted to them. The soft, resilient properties of the two sponge plates 206 mitigate this instantaneous impact. Multiple baffles 304 can slide inside the multiple second-set rods 205. At this time, the force on the two sponge plates 206 is transmitted to the two support rods 207, further causing the multiple push plates 204 to slide to the inner walls of the multiple second-set rods 205. The push plates 204 and the inner walls of the multiple second-set rods 205 compress the multiple springs 208. When the springs 208 are compressed, they generate a counterforce, further mitigating the instantaneous force on the drone during landing and protecting it. The two connecting plates 2 can be removed from the drone by rotating the screws on them, allowing for the disassembly of the drone's support structure. The two sets of support rods 201 are connected by two crossbars 202, increasing the rigidity of the support structure. Therefore, when using the drone, the force on the drone during landing is mitigated, protecting the drone from various impacts. The module provides protection. When using the drone, multiple rotors 306 enable the drone to fly. When the drone lands, multiple push plates 204 press down inside multiple second rods 205. The push plates 204 further push the gas inside the second rods 205 into the hollow cylinders 3. Multiple circular plates 301 can slide on the inner walls of the hollow cylinders 3. At this time, the circular plates 301 are pushed by the gas to slide further on the inner walls of the hollow cylinders 3. Multiple transmission rods 302 push the two supports 303 to move to both sides of the drone, increasing the distance between the two supports 303 and the sides of the drone. When the drone lands and tilts, the multiple bottom rods 305 at the bottom of the two supports 303 will first contact the ground. One end of the multiple bottom rods 305 is pointed to facilitate contact with the ground. By increasing the distance between the two bottom rods 305, the drone is supported, preventing the multiple rotors 306 from contacting the ground and being damaged when the drone tilts. Therefore, when the drone lands and tilts, the multiple rotors 306 can be prevented from contacting the ground and being damaged, thus extending the drone's service life.
[0041] The above are merely preferred embodiments and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.
Claims
1. A modular multi-rotor unmanned aerial vehicle, characterized in that, The drone includes: Body (1); Two connecting plates (2) are respectively set on both sides of the body (1) by screws, and two support rods (201) are fixedly set on one side of each of the two connecting plates (2); Multiple first sleeve rods (203) are fixedly installed on one side of multiple support rods (201), and a push plate (204) is fixedly installed at one end of each of the multiple first sleeve rods (203); Multiple second sleeve rods (205) are respectively fixedly sleeved on the outer surface of multiple push plates (204), and the multiple second sleeve rods (205) are in pairs, and a support rod (207) is fixedly provided at one end of each pair of second sleeve rods (205).
2. The modular multi-rotor UAV according to claim 1, characterized in that: Sponge plates (206) are fixedly installed on the outer surfaces of the two support rods (207), and the multiple support rods (201) are arranged in pairs. Crossbars (202) are fixedly installed on the outer surfaces of the two groups of support rods (201).
3. A modular multi-rotor UAV according to claim 1, characterized in that: A spring (208) is fixedly provided on one side of each of the multiple push plates (204), and the multiple springs (208) are respectively movably embedded in the inner wall of the multiple second sleeve rods (205).
4. A modular multi-rotor UAV according to claim 1, characterized in that: Hollow cylinders (3) are fixedly provided on the outer surfaces of multiple second sleeve rods (205), and circular plates (301) are movably embedded in the inner walls of multiple hollow cylinders (3).
5. A modular multi-rotor UAV according to claim 4, characterized in that: A transmission rod (302) is fixedly provided on one side of each of the multiple circular plates (301).
6. A modular multi-rotor unmanned aerial vehicle according to claim 5, characterized in that: The multiple transmission rods (302) are arranged in pairs, and a bracket (303) is fixedly provided at one end of each pair of transmission rods (302). Multiple base rods (305) are fixedly provided on one side of each of the two brackets (303).
7. A modular multi-rotor UAV according to claim 4, characterized in that: Each of the hollow cylinders (3) has a baffle (304) fixedly embedded in its inner wall.
8. A modular multi-rotor unmanned aerial vehicle according to claim 1, characterized in that: Multiple rotors (306) are mounted on one side of the fuselage (1).