A drone propeller protection frame
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINAN NAVIGATOR AVIATION TECH CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-06-30
Smart Images
Figure CN224427876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drone protection technology, and in particular to a drone propeller protection frame. Background Technology
[0002] A drone propeller protective frame is a protective structure surrounding the drone propeller. It is typically made of lightweight yet robust materials such as high-strength plastics or carbon fiber composites, and is cage-like or ring-shaped, encasing the propeller. Its main function is to effectively prevent the propeller from directly colliding with external objects such as trees, walls, and pedestrians during drone flight. This prevents damage and deformation of the propeller due to impact, ensuring normal drone flight. Simultaneously, it reduces the risk of accidental injury to surrounding people or objects caused by the propeller's high-speed rotation, improving the safety of drone operation. It is particularly suitable for operating in complex environments such as indoors, jungles, and near crowds.
[0003] The structure of a drone propeller protective frame typically includes fixing components such as clips, screw holes, or quick-release structures that connect to the drone fuselage; a main protective net that surrounds the propeller, which is mostly mesh-like or hollowed-out ring-shaped and made of lightweight, high-strength materials, to ensure protective space while reducing flight drag; and a supporting frame that connects the fixing components and the protective net in a radial or ring-shaped distribution, which supports and strengthens the overall structural strength. Some frames also have additional reinforcing ribs in areas prone to collisions to further enhance impact resistance.
[0004] In existing technologies, the installation methods for some drone propeller protective frames are mostly integrated with the frame or installed one by one on the frame using screws. When the frame or protective frame needs to be replaced or repaired, the protective frame must be disassembled one by one, making it difficult to achieve quick disassembly and assembly. Moreover, this type of installation and disassembly process often requires the use of professional tools, making the operation complex. Some protective frames that adopt the overall disassembly method, although not an integrated structure, are fixed with bolts. Bolts, as metal parts, increase the weight of the drone, making disassembly not only troublesome but also prone to losing parts. In addition, some protective frames have many fixing points during installation, which consumes a lot of time and greatly affects the convenience of rapid take-off and transportation of drones. Therefore, a drone propeller protective frame is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a drone propeller protection frame, which aims to improve the problems of cumbersome disassembly and assembly, the need for professional tools, numerous and time-consuming fixed points, easy loss of parts, and increased weight in the installation of some drone propeller protection frames in the prior art, which affect the ease of use.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A protective frame for a drone propeller includes an outer shell, an installation mechanism slidably connected inside the outer shell, a connecting rod fixedly connected to the outside of the outer shell, an arc-shaped groove fixedly connected to the other end of the connecting rod, a buffer mechanism fixedly connected inside the arc-shaped groove, and an arc-shaped block slidably connected to the inner wall of the arc-shaped groove.
[0008] The installation mechanism includes a pull rod, a rack fixedly connected to the left side of the pull rod, a fixing buckle fixedly connected to the front side of the pull rod, a square groove slidably connected to the top of the fixing buckle, a fixing block fixedly connected to the left side of the square groove, a gear rotatably connected to the rear side of the fixing block, the gear and the rack being meshed, a connecting shaft fixedly connected inside the gear, a fixing shell rotatably connected to the outside of the connecting shaft, and a fixing component installed on the inner wall of the fixing shell;
[0009] As a further description of the above technical solution:
[0010] The fixing assembly includes a rotating disk, the rear side of which is rotatably connected to the inner wall of the fixing shell. Two rotating shafts are slidably connected inside the rotating disk. Two sliding plates are fixedly connected to the front side of each of the two rotating shafts. A connecting plate is fixedly connected to the other end of each of the two sliding plates. A ring is fixedly connected to the inner wall of the connecting plate.
[0011] As a further description of the above technical solution:
[0012] The buffer mechanism includes a fixed plate 1, a sliding assembly is fixedly connected to the front side of the fixed plate 1, a damper is sleeved on the outside of the sliding assembly, and a fixed plate 3 is fixedly connected to the other end of the damper.
[0013] As a further description of the above technical solution:
[0014] The sliding assembly includes a sliding shaft, a sliding shell is slidably connected to the outside of the sliding shaft, and a fixing plate is fixedly connected to the rear side of the sliding shell.
[0015] As a further description of the above technical solution:
[0016] The interior of the outer shell is fixedly connected to the exterior of the fixed shell, and the interior of the outer shell has a groove.
[0017] As a further description of the above technical solution:
[0018] The interior of the fixing block is rotatably connected to the exterior of the connecting shaft, and the front side of the fixing block is fixedly connected to the rear side of the fixing shell.
[0019] As a further description of the above technical solution:
[0020] The interior of the fixed housing is slidably connected to the upper and lower sides of the sliding plate, and the front side of the connecting shaft is fixedly connected to the interior of the rotating disk.
[0021] As a further description of the above technical solution:
[0022] The arc-shaped groove has a recess inside, and the rear side of the fixing plate three is fixedly connected to the inside of the arc-shaped block.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the fixing component includes a rotating disk, the rear side of which is rotatably connected to the inner wall of the fixing shell. Two rotating shafts are slidably connected inside the rotating disk, and two sliding plates are fixedly connected to the front side of each of the two rotating shafts. A ring is fixedly connected to the inner wall of the connecting plate, which enables the quick assembly and disassembly of the protective frame, reduces operation time and tool dependence, and improves ease of use.
[0025] 2. In this utility model, the sliding component includes a sliding shaft, a sliding shell is slidably connected to the outside of the sliding shaft, and a fixing plate is fixedly connected to the rear side of the sliding shell; through the sliding cooperation between the sliding shaft and the sliding shell, combined with the buffering effect of the damper, the impact force and vibration during the sliding process can be effectively reduced, avoiding damage to the components due to rapid movement or collision, while improving the stability and safety of the overall structure during operation. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a drone propeller protection frame proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the outer shell of a drone propeller protective frame proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the connecting rod of a drone propeller protection frame proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the arc-shaped block of a drone propeller protection frame proposed in this utility model;
[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle.
[0031] Legend:
[0032] 1. Outer shell; 2. Mounting mechanism; 21. Tie rod; 22. Gear; 23. Fixing block; 24. Connecting shaft; 25. Fixing shell; 26. Fixing assembly; 261. Rotating disk; 262. Rotating shaft; 263. Sliding plate; 264. Connecting plate; 265. Ring; 27. Square groove; 28. Fixing buckle; 29. Rack; 3. Connecting rod; 4. Arc groove; 5. Buffer mechanism; 51. Fixing plate one; 52. Damper; 53. Sliding assembly; 531. Sliding shaft; 532. Sliding shell; 533. Fixing plate two; 54. Fixing plate three; 6. Arc block. Detailed Implementation
[0033] 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.
[0034] Reference Figures 1 to 3 An embodiment of this utility model is provided: a protective frame for a drone propeller, including a shell 1, which provides an installation environment for subsequent parts. An installation mechanism 2 is slidably connected inside the shell 1, and a connecting rod 3 is fixedly connected to the outside of the shell 1. An arc groove 4 is fixedly connected to the other end of the connecting rod 3. A buffer mechanism 5 is fixedly connected inside the arc groove 4, and an arc block 6 is slidably connected to the inner wall of the arc groove 4.
[0035] The mounting mechanism 2 includes a pull rod 21, which is the operating component of the mounting mechanism 2. A rack 29 is fixedly connected to the left side of the pull rod 21. The rack 29 transmits power and motion. A fixing buckle 28 is fixedly connected to the front side of the pull rod 21. The fixing buckle 28 guides and restricts the movement direction of the pull rod 21, ensuring the stability of the movement of the pull rod 21. A square groove 27 is slidably connected to the top of the fixing buckle 28. The square groove 27 provides a sliding track for the fixing buckle 28. A fixing block 23 is fixedly connected to the left side of the square groove 27. The fixing block 23 mainly serves as a support and connection. A gear 22 is rotatably connected to the rear side of the fixing block 23. The gear 22 is meshed with the rack 29. The gear 22 transmits the rotational motion to the rotating disk 261 through the connecting shaft 24. The connecting shaft 24 is fixedly connected inside the gear 22.
[0036] A fixed housing 25 is rotatably connected to the outside of the connecting shaft 24. The fixed housing 25 provides installation space for the fixing assembly 26. The fixing assembly 26 is installed on the inner wall of the fixed housing 25. The fixing assembly 26 includes a rotating disk 261. The rear side of the rotating disk 261 is rotatably connected to the inner wall of the fixed housing 25. The rotation of the rotating disk 261 causes the internal rotating shaft 262 to change position, thereby pushing the sliding plate 263 to move. Two rotating shafts 262 are slidably connected inside the rotating disk 261. The rotating shafts 262 convert the rotational motion of the rotating disk 261 into the linear motion of the sliding plate 263. Two sliding plates 263 are fixedly connected to the front side of each of the two rotating shafts 262. The sliding plates 263 move linearly under the guidance of the inner wall of the fixed housing 25. The other ends of the two sliding plates 263 are fixedly connected to... The connecting plate 264 transmits the movement of the sliding plate 263 to the ring 265. The inner wall of the connecting plate 264 is fixedly connected to the ring 265, which clamps or loosens itself by contraction or expansion. The inner part of the outer shell 1 is fixedly connected to the outer part of the fixed shell 25. The inner part of the outer shell 1 has a groove, which provides an installation environment for subsequent parts. The inner part of the fixing block 23 is rotatably connected to the outer part of the connecting shaft 24. The fixing block 23 mainly plays a supporting and connecting role. The front side of the fixing block 23 is fixedly connected to the rear side of the fixed shell 25. The inner part of the fixed shell 25 is slidably connected to the upper and lower sides of the sliding plate 263. The front side of the connecting shaft 24 is fixedly connected to the inner part of the rotating disk 261. The connecting shaft 24 directly transmits the rotational movement of the gear 22 to the rotating disk 261.
[0037] Reference Figure 4 and Figure 5The buffer mechanism 5 includes a fixed plate 51, which provides a stable mounting support point for the sliding assembly 53 and the damper 52, ensuring that the overall position of the buffer mechanism 5 is fixed within the arc-shaped groove 4, so that the buffering effect can be stably transmitted. The sliding assembly 53 is fixedly connected to the front side of the fixed plate 51. The sliding assembly 53, through its own telescopic movement in conjunction with the damper 52, can convert the impact force on the arc-shaped block 6 into sliding displacement, providing movement space for the buffering process. The damper 52 is sleeved on the outside of the sliding assembly 53. The other end of the damper 52 is fixedly connected to a fixed plate 54. The fixed plate 54 transmits the impact force on the arc-shaped block 6 to the damper 52, while ensuring that the damper 52 and the sliding assembly are in good working order. The connection stability between component 53 and arc-shaped block 6 ensures that the impact force can be effectively applied to the buffer mechanism 5. The sliding component 53 includes a sliding shaft 531, which can extend and retract within the sliding shell 532. The sliding shell 532 is slidably connected to the outside of the sliding shaft 531, providing a sliding track for the sliding shaft 531 and defining the direction of movement of the sliding shaft 531. A second fixing plate 533 is fixedly connected to the rear side of the sliding shell 532, providing support for the sliding shell 532 during sliding. A groove is provided inside the arc-shaped groove 4. The rear side of the third fixing plate 54 is fixedly connected to the inside of the arc-shaped block 6, and the third fixing plate 54 transmits the impact force received by the arc-shaped block 6 to the damper 52.
[0038] Working principle: When the drone needs to be quickly installed with a protective frame, manually pull the lever 21. The lever 21 slides down, causing the rack 29 to slide. The rack 29 drives the gear 22 to rotate. When the gear 22 rotates, it drives the connecting shaft 24 to rotate. When the connecting shaft 24 rotates, it drives the rotating disk 261 to rotate. When the rotating disk 261 rotates, the two grooves inside the rotating disk 261 rotate simultaneously, driving the two rotating shafts 262 to rotate. The rotation of the two rotating shafts 262 drives the sliding plate 263 to slide left and right in the groove of the fixed shell 25. The sliding plate 263 also drives the connecting plate 264 and the ring 265 to slide left and right. When the ring 265 slides left and right, it forms an open and closed state for quick installation. This greatly simplifies the installation steps and can be completed without complicated tools or professional skills, significantly improving installation efficiency. At the same time, the components work together through precise transmission relationships to ensure the stability and reliability of the installation process and quickly complete the frame fixing.
[0039] When the protective frame collides with an object, the object compresses the arc-shaped block 6. When the arc-shaped block 6 is compressed by the object, the fixing plate 3 54 presses against the fixing plate 2 533 and slides forward outside the sliding shaft 531. At the same time, the fixing plate 3 54 and the fixing plate 1 51 compress the damper 52. During compression, the arc-shaped block 6 slides in the groove of the arc-shaped groove 4, forming a shock-absorbing buffer effect on the protective frame. This effectively weakens the impact of the impact on the main body of the drone, reduces the damage to the protective frame itself, provides reliable protection for the core components of the drone, and improves the impact resistance and service life of the protective frame in complex environments.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A protective frame for a drone propeller, comprising a shell (1), characterized in that: The inner side of the outer shell (1) is slidably connected to the mounting mechanism (2), the outer side of the outer shell (1) is fixedly connected to the connecting rod (3), the other end of the connecting rod (3) is fixedly connected to the arc groove (4), the inner side of the arc groove (4) is fixedly connected to the buffer mechanism (5), and the inner wall of the arc groove (4) is slidably connected to the arc block (6). The installation mechanism (2) includes a pull rod (21), a rack (29) is fixedly connected to the left side of the pull rod (21), a fixing buckle (28) is fixedly connected to the front side of the pull rod (21), a square groove (27) is slidably connected to the top of the fixing buckle (28), a fixing block (23) is fixedly connected to the left side of the square groove (27), a gear (22) is rotatably connected to the rear side of the fixing block (23), the gear (22) and the rack (29) are meshed, a connecting shaft (24) is fixedly connected inside the gear (22), a fixing shell (25) is rotatably connected to the outside of the connecting shaft (24), and a fixing component (26) is installed on the inner wall of the fixing shell (25).
2. The UAV propeller protective frame according to claim 1, characterized in that: The fixing component (26) includes a rotating disk (261), the rear side of which is rotatably connected to the inner wall of the fixing shell (25). Two rotating shafts (262) are slidably connected inside the rotating disk (261). Two sliding plates (263) are fixedly connected to the front side of the two rotating shafts (262). A connecting plate (264) is fixedly connected to the other end of the two sliding plates (263). A ring (265) is fixedly connected to the inner wall of the connecting plate (264).
3. The UAV propeller protective frame according to claim 1, characterized in that: The buffer mechanism (5) includes a fixed plate (51), a sliding component (53) is fixedly connected to the front side of the fixed plate (51), a damper (52) is sleeved on the outside of the sliding component (53), and a fixed plate (54) is fixedly connected to the other end of the damper (52).
4. The UAV propeller protection frame according to claim 3, characterized in that: The sliding assembly (53) includes a sliding shaft (531), a sliding shell (532) is slidably connected to the outside of the sliding shaft (531), and a fixing plate (533) is fixedly connected to the rear side of the sliding shell (532).
5. The UAV propeller protective frame according to claim 1, characterized in that: The interior of the outer shell (1) is fixedly connected to the exterior of the fixed shell (25), and the interior of the outer shell (1) is provided with a groove.
6. The UAV propeller protective frame according to claim 1, characterized in that: The interior of the fixing block (23) is rotatably connected to the exterior of the connecting shaft (24), and the front side of the fixing block (23) is fixedly connected to the rear side of the fixing shell (25).
7. A drone propeller protection frame according to claim 2, characterized in that: The interior of the fixed shell (25) is slidably connected to the upper and lower sides of the sliding plate (263), and the front side of the connecting shaft (24) is fixedly connected to the interior of the rotating disk (261).
8. A drone propeller protection frame according to claim 3, characterized in that: The arc-shaped groove (4) has a groove inside, and the rear side of the fixing plate three (54) is fixedly connected to the inside of the arc-shaped block (6).