Quick-release propeller guard ring of unmanned aerial vehicle

By installing detachable protective cover modules and locking mechanisms on the top and bottom of the drone propellers, the problems of easy collision at the top of the propellers and the difficulty in quickly removing the integrated protective ring are solved, improving the efficiency of drone use and the convenience of maintenance.

CN224225332UActive Publication Date: 2026-05-12GUANGDONG LENFAST TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG LENFAST TECH DEV CO LTD
Filing Date
2025-06-25
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The lack of a quick-release protective ring on the top of the propeller of existing drones makes them prone to collisions with obstacles when flying in complex environments. Furthermore, the integrated protective ring is difficult to remove quickly, affecting the efficiency of use and the convenience of maintenance, and also takes up space.

Method used

A quick-release propeller protection ring for drones was designed. By installing detachable bottom and top cover modules at the bottom and top of the flight arm, and using insert plates and locking mechanisms, quick assembly and disassembly can be achieved, ensuring effective protection for the top and bottom of the propeller blades.

Benefits of technology

It enables quick assembly and disassembly of the propellers and stable connection, avoids collision damage, improves the efficiency and ease of maintenance of the drone, and reduces space occupation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a quick-release propeller guard ring of an unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicle accessories and comprises a flight arm, and the bottom and the top of the flight arm are connected with a bottom cover module and a top cover module which are positioned at the bottom and the top of a paddle module. The bottom cover module and the top cover module are matched with the locking mechanism in the flight arm through the first inserting plate and the second inserting plate respectively, the locking plate of the locking mechanism slides and then is inserted into the first inserting plate and the second inserting plate, and meanwhile the locking rod penetrates through the bolt hole of the connecting rod and is locked through the overturning lock catch. The protection cover and the flight arm are quickly disassembled and stably connected, the top and the bottom of the paddle module can be effectively protected, the paddle is prevented from being collided with an external object to be damaged when the unmanned aerial vehicle flies in a complex environment, and the flight stability and safety are guaranteed; and the problems that a traditional integrated protection ring is difficult to disassemble quickly, inconvenient to maintain and large in storage occupied area are solved, and the use efficiency and maintenance convenience of the unmanned aerial vehicle are improved.
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Description

Technical Field

[0001] This utility model relates to the field of drone accessories technology, specifically a quick-release propeller protection ring for drones. Background Technology

[0002] In the existing technological system, in order to ensure the safe operation of drone propellers, a common practice is to install a protective ring on the outer side of the bottom of the propeller. When the drone flies in complex environments, such as flying at low altitude through forests or close to buildings, the protective ring can effectively prevent the propeller from accidentally colliding with external objects, thereby reducing the risk of propeller damage, ensuring the flight stability and safety of the drone, and improving the reliability of drone operations to a certain extent.

[0003] However, the outer top of the propeller blades often lacks a corresponding quick-release protective ring. During drone flight, the outer top of the propeller blades also faces the risk of collision. For example, when flying in a narrow space, the top of the propeller blades is prone to contact with obstacles above. Moreover, even if there are protective measures for the outer top of the propeller blades, most of them adopt an integrated protective ring structure. Although this integrated structure can provide a certain degree of protection, it is difficult to achieve quick release as a whole. In actual use, if the protective ring is damaged and needs to be replaced, or if the protective device needs to be adjusted due to different operating scenarios, the integrated structure requires a lot of time and effort to disassemble, which seriously affects the efficiency of drone use and the convenience of maintenance. At the same time, during the storage and transportation of drones, the protective ring that cannot be quickly removed will also take up a lot of space and cause many inconveniences. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a quick-release propeller protection ring for drones to solve the technical problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-release propeller protection ring for unmanned aerial vehicles, comprising a flight arm and a propeller module installed at the top of its end, wherein a bottom cover module and a top cover module located at the bottom and top of the propeller module are connected to the bottom and top of the flight arm, respectively.

[0006] The bottom cover module consists of a bottom protective cover with a first insert plate fixed on one side, and the top cover module consists of a top protective cover with a second insert plate fixed on one side. The flight arm is provided with a locking mechanism, which includes a bottom insertion hole and a top insertion hole that cooperate with the first insert plate and the second insert plate. The locking mechanism also includes a locking plate that is slidably connected inside the flight arm. After sliding, the locking plate is inserted into the first insert plate and the second insert plate to provide a stable connection between the bottom protective cover and the top protective cover.

[0007] The first and second insert plates are respectively provided with a first through hole and a second through hole that cooperate with the locking plate, and the end of the locking plate is movably connected with a flip lock that is manually engaged with the flight arm.

[0008] The base cover module also includes two sets of connecting rods extending into the flight arm, and the flight arm has connecting holes that cooperate with the two sets of connecting rods. A locking rod that passes through the two sets of connecting rods is fixed on one side of the locking plate, and the two sets of connecting rods have pin holes that cooperate with the locking rod.

[0009] By setting a bottom cover module and a top cover module at the bottom and top of the flight arm, respectively, the bottom cover module and the top cover module cooperate with the locking mechanism inside the flight arm through the first insert plate and the second insert plate. After the locking plate of the locking mechanism slides, it inserts into the first insert plate and the second insert plate. At the same time, the locking rod passes through the pin hole of the connecting rod and is locked by flipping the latch. This achieves quick disassembly and assembly and stable connection between the protective cover and the flight arm. This structural design can not only effectively protect the top and bottom of the propeller module, avoiding damage to the propeller from collision with external objects when the drone flies in complex environments, and ensuring flight stability and safety, but also solve the problems of traditional integrated protective rings that are difficult to disassemble quickly, inconvenient to maintain, and take up a lot of space for storage, thus improving the efficiency of drone use and the convenience of maintenance.

[0010] The flight arm has a sliding groove inside that is slidably connected to the locking plate, which is used for the sliding action of the locking mechanism.

[0011] In summary, this utility model has the following beneficial effects: By setting a bottom cover module and a top cover module at the bottom and top of the flight arm, respectively, the bottom cover module and the top cover module cooperate with the locking mechanism inside the flight arm through a first insert plate and a second insert plate. After the locking plate of the locking mechanism slides, it is inserted into the first insert plate and the second insert plate. At the same time, the locking rod passes through the pin hole of the connecting rod and is locked by flipping the latch. This achieves quick disassembly and assembly and stable connection between the protective cover and the flight arm. This structural design can not only effectively protect the top and bottom of the propeller module, avoiding damage to the propeller from collisions with external objects when the drone flies in complex environments, thus ensuring flight stability and safety, but also solves the problems of traditional integrated protective rings being difficult to disassemble quickly, inconvenient to maintain, and taking up a large storage space, thereby improving the efficiency of drone use and the convenience of maintenance. Attached Figure Description

[0012] Figure 1 This is an exploded view of the entire utility model;

[0013] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0014] Figure 3 This utility model Figure 1 Enlarged view of point B;

[0015] Figure 4 This utility model Figure 1 Enlarged view of point C;

[0016] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0017] In the diagram: 1. Flight arm; 2. Propeller module; 3. Bottom cover module; 301. Bottom protective cover; 302. First insert plate; 303. First through hole; 304. Connecting rod; 305. Pin hole; 4. Top cover module; 401. Top protective cover; 402. Second insert plate; 403. Second through hole; 5. Locking mechanism; 501. Locking plate; 502. Locking rod; 503. Bottom insert hole; 504. Top insert hole; 505. Connecting hole; 506. Flip lock. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure. Example 1

[0020] like Figures 1-5 As shown, the protective ring device provided in this embodiment mainly consists of a flight arm 1, a propeller module 2, a bottom cover module 3, a top cover module 4, and a locking mechanism 5. The combination of the insert plate and the locking plate enables quick disassembly and assembly of protection for the top and bottom of the propeller, as detailed below:

[0021] The flight arm 1 is the main body of the drone arm. The propeller module 2 is installed at the top end. The internal slide groove, bottom insertion hole 503, top insertion hole 504 and connection hole 505 are opened for installing the locking mechanism 5 and connecting the bottom cover module 3 and the top cover module 4.

[0022] Propeller module 2: includes a propeller and drive motor, installed at the end of flight arm 1, and covered and protected by bottom cover module 3 and top cover module 4;

[0023] The bottom cover module 3 includes:

[0024] The bottom protective cover 301 is an arc-shaped plastic cover with a hollow design, covering the bottom of the propeller module 2. The first insert plate 302 is fixed on one side, and two sets of connecting rods 304 extend from the top.

[0025] The first insertion plate 302 has a first through hole 303 inside, which is inserted into the bottom insertion hole 503 of the flight arm 1.

[0026] Connecting rod 304: Two cylindrical rods extending from the top protective cover 401, with pin holes 305 inside, which are inserted into the connecting holes 505 of the flight arm 1;

[0027] Top cover module 4 includes:

[0028] The top protective cover 401 is an arc-shaped plastic cover with a hollow design, covering the top of the propeller module 2, with the second insert plate 402 fixed on one side.

[0029] The second insertion plate 402 has a second through hole 403 inside, which is inserted into the top insertion hole 504 of the flight arm 1;

[0030] Locking mechanism 5 includes:

[0031] The locking plate 501 slides in the internal groove of the flight arm 1, with a flip lock 506 fixed at the end and a locking rod 502 fixed on one side;

[0032] The locking rod 502 has a cylindrical structure and passes through the pin hole 305 of the connecting rod 304 to fix the bottom cover module 3;

[0033] The flip-lock 506 is a plastic lock that engages with the outer side of the flight arm 1 to lock the position of the locking plate 501.

[0034] Protective cover installation

[0035] Installation of bottom cover module 3: Insert the first insert plate 302 of the bottom protective cover 301 into the bottom insertion hole 503 of the flight arm 1, and at the same time insert the two sets of connecting rods 304 into the connecting hole 505 to ensure that the bottom protective cover 301 fits the bottom of the propeller module 2.

[0036] Top cover module 4 installation: Insert the second insert plate 402 of the top protective cover 401 into the top insert hole 504 of the flight arm 1 so that the top protective cover 401 covers the top of the propeller module 2 and forms an enclosing structure with the bottom protective cover 301.

[0037] Locking mechanism operation

[0038] Sliding locking plate 501: Manually push the locking plate 501 to slide in the slide groove of the flight arm 1, so that the locking plate 501 is simultaneously inserted into the first through hole 303 of the first insert plate 302 and the second through hole 403 of the second insert plate 402, fixing the bottom cover module 3 and the top cover module 4.

[0039] Positioning of locking rod 502: When locking plate 501 slides, locking rod 502 is simultaneously inserted into pin hole 305 of connecting rod 304, further enhancing the stability of bottom cover module 3;

[0040] Locking and fixing: The flip lock 506 at the end of the flip locking plate 501 engages with the outside of the flight arm 1 to prevent the locking plate 501 from sliding accidentally and to complete the quick locking of the protective cover.

[0041] Protective cover removal

[0042] Flip open the flip lock 506, slide the locking plate 501 in the opposite direction to disengage it from the first through hole 303 and the second through hole 403, and at the same time, the locking rod 502 disengages from the pin hole 305, so that the bottom cover module 3 and the top cover module 4 can be pulled out respectively to achieve quick disassembly.

[0043] Verification of protective effect

[0044] After the protective cover is installed, the top and bottom of the propeller module 2 are covered by the protective cover, which is 5-10mm away from the edge of the propeller. When the drone collides with an obstacle, the protective cover will contact the obstacle first to avoid direct damage to the propeller.

[0045] The working principle of this utility model is as follows: When in use, the bottom cover module 3 and the top cover module 4 cooperate with each other to cover the bottom and top of the blade module 2, wherein the bottom protective cover 301 and the top protective cover 401 are respectively provided with a first insert plate 302 and a second insert plate 402 on one side.

[0046] The first insert plate 302 and the second insert plate 402 can be inserted into the bottom insert hole 503 and the top insert hole 504 on the flight arm 1. Then, by manually sliding the locking mechanism 5 relative to the flight arm 1, the locking plate 501 of the locking mechanism 5 can be inserted into the first through hole 303 and the second through hole 403 inside the first insert plate 302 and the second insert plate 402, thereby making the bottom cover module 3 and the top cover module 4 stably connected to the flight arm 1, while ensuring the quick-release and quick-installation effect of the bottom cover module 3 and the top cover module 4 relative to the propeller module 2.

[0047] Furthermore, the bottom protective cover 301 has two sets of connecting rods 304 fixed at its top, extending into the interior of the flight arm 1. Each connecting rod 304 has a pin hole 305 inside. When the locking mechanism 5 slides, its locking rod 502 can pass through the two sets of pin holes 305 to position the connecting rod 304, thereby greatly improving the stability of the bottom protective cover 301. It also ensures the stability and firmness between the top protective cover 401 and the flight arm 1, resulting in good performance.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A quick-release propeller protection ring for unmanned aerial vehicles (UAVs), comprising a flight arm (1) and a propeller module (2) mounted on the top of its end, characterized in that: The flight arm (1) is connected to a bottom cover module (3) and a top cover module (4) located at the bottom and top of the propeller module (2). The bottom cover module (3) consists of a bottom protective cover (301) with a first insert plate (302) fixed on one side, and the top cover module (4) consists of a top protective cover (401) with a second insert plate (402) fixed on one side. The flight arm (1) is provided with a locking mechanism (5), and the locking mechanism (5) includes a bottom insertion hole (503) and a top insertion hole (504) that cooperate with the first insert plate (302) and the second insert plate (402). The locking mechanism (5) also includes a locking plate (501) that is slidably connected inside the flight arm (1). After sliding, the locking plate (501) is inserted into the first insert plate (302) and the second insert plate (402) to play a stable connection role between the bottom protective cover (301) and the top protective cover (401).

2. The quick-release propeller protection ring for UAVs according to claim 1, characterized in that: The first insert plate (302) and the second insert plate (402) are respectively provided with a first through hole (303) and a second through hole (403) that cooperate with the locking plate (501), and the end of the locking plate (501) is movably connected with a flip lock (506) that is manually engaged with the flight arm (1).

3. The quick-release propeller protection ring for UAVs according to claim 1, characterized in that: The bottom cover module (3) also includes two sets of connecting rods (304) extending into the interior of the flight arm (1), and the interior of the flight arm (1) is provided with connecting holes (505) that cooperate with the two sets of connecting rods (304).

4. The quick-release propeller protection ring for UAVs according to claim 3, characterized in that: The locking plate (501) has a locking rod (502) that passes through the two sets of connecting rods (304) on one side, and the two sets of connecting rods (304) have pin holes (305) that cooperate with the locking rod (502) inside.

5. The quick-release propeller protection ring for UAVs according to claim 1, characterized in that: The flight arm (1) has a sliding groove inside that is slidably connected to the locking plate (501) for the sliding action of the locking mechanism (5).