Small quadcopter detachable rotor guard

Abstract

The utility model relates to unmanned aerial vehicle structure design and safety protection technology discloses small -size four -axis aircraft detachable rotor protection frame, including positioning frame and four positioning rings, the inner wall sliding connection of positioning frame has the protection cover, two positioning rings's outside fixed connection in the outside of protection cover, and the outside fixed connection of other two positioning rings is in the outside of positioning frame, the inner wall sliding connection of positioning ring has semicircle block, the outside fixed connection of semicircle block has the moving handle, the inner wall rotation is connected with the rotation axis of positioning ring, the inner wall fixed connection of rotation axis has reset component. In the utility model, the position of moving handle changes and drives semicircle block to move along the inner wall of positioning ring, so that the contact surface of two semicircle blocks is perpendicular to the ground, so that the locking of protection cover and positioning frame can be released, and the convenient detachable rotor protection frame of taking down protection cover can significantly improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the structural design and safety protection technology of unmanned aerial vehicles, and in particular to a detachable rotor protection frame for small quadcopters. Background Technology

[0002] A small quadcopter is a vertical takeoff and landing drone consisting of four rotors. It is characterized by its flexibility, maneuverability, and ease of operation, and is widely used in aerial photography, inspection, education, and entertainment. The rotor protection frame of the small quadcopter adopts a detachable and lightweight design to protect the rotors from collision damage, reduce the risk of accidents, ensure flight safety, and extend the service life of the equipment.

[0003] Existing rotor protection frames for small quadcopters mostly adopt lightweight plastic or metal frame structures, which wrap the rotor in a ring or cage-like form. They use mesh or baffles to block foreign object collisions, reducing the risk of crashes. At the same time, they balance heat dissipation requirements with fuselage weight distribution. The detachable design facilitates quick replacement or maintenance, effectively extending equipment life and improving flight safety.

[0004] In existing technologies, some aircraft rotor protection frames are directly fixed with bolts and cannot be easily disassembled, which leads to reduced maintenance efficiency, difficulty in quickly inspecting or replacing damaged parts after a collision, increased risk of secondary damage, and frequent disassembly and assembly can cause thread wear or loosening, affecting structural stability and hindering rapid repair in emergency scenarios, indirectly increasing usage costs and safety hazards. Therefore, a detachable rotor protection frame for small quadcopters is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a detachable rotor protection frame for small quadcopters, which aims to improve the problems of low maintenance efficiency, difficulty in replacing parts after a collision, increased risk of secondary damage, and potential thread wear caused by rotor protection frames that are directly fixed with bolts in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A detachable rotor protection frame for a small quadcopter includes a positioning frame and four positioning rings. A protective cover is slidably connected to the inner wall of the positioning frame. Two of the positioning rings are fixedly connected to the outside of the protective cover, and the other two positioning rings are fixedly connected to the outside of the positioning frame. A semi-circular block is slidably connected to the inner wall of each positioning ring, and a moving handle is fixedly connected to the outside of the semi-circular block. A rotating shaft is rotatably connected to the inner wall of each positioning ring, and a reset assembly is fixedly connected to the inner wall of the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] The reset assembly includes a spring, one end of which is fixedly connected to the inner wall of the rotating shaft, and the other end of which is fixedly connected to a sliding rod.

[0010] As a further description of the above technical solution:

[0011] The other end of the sliding rod is rotatably connected to the inner wall of the moving handle, and the outer side of the positioning ring is in contact with the outer side of another positioning ring.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the positioning frame is slidably connected to two sliding plates, and the inner wall of the sliding plates is threadedly connected to two bolts.

[0014] As a further description of the above technical solution:

[0015] The four bolts are externally threaded onto the inner wall of the positioning frame, and the positioning frame is externally slidably connected to two bases.

[0016] As a further description of the above technical solution:

[0017] The bottom of the positioning frame is fixedly connected to four movable shafts, the inner walls of the movable shafts are movably connected to movable balls, and the inner walls of the movable balls are fixedly connected to springs.

[0018] As a further description of the above technical solution:

[0019] The base has two positioning grooves on its inner wall. The other end of the second spring is fixedly connected to the inner wall of the positioning groove. Sliding blocks are slidably connected to the outside of the two movable shafts.

[0020] As a further description of the above technical solution:

[0021] The inner wall of the sliding block is provided with a horizontal groove, the bottom of the positioning frame is fixedly connected with a fixing strip, the outside of the fixing strip is fixedly connected with a horizontal rod, and the outside of the horizontal rod is movably connected to the inner wall of the two horizontal grooves.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by turning the two movable handles, the position of the movable handles changes and drives the semicircular blocks to move along the inner wall of the positioning ring, so that the contact surface of the two semicircular blocks is perpendicular to the ground, thereby releasing the lock between the protective cover and the positioning frame. The rotor protective frame, which can be easily disassembled by removing the protective cover, can significantly improve maintenance efficiency.

[0024] 2. In this utility model, the positional change of the movable shaft can cause the movable ball to shake, thereby offsetting part of the shaking force, and can also cause the second spring to deform, offsetting part of the shaking force, making the positioning frame drive the aircraft structure more stable. The addition of a buffer structure at the bottom of the aircraft rotor protection frame can effectively alleviate the impact of uneven ground during landing, reduce the risk of rotor and fuselage vibration damage, and improve landing stability and equipment reliability. Attached Figure Description

[0025] Figure 1 This is a perspective view of the detachable rotor protection frame for the small quadcopter proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the protective cover for the detachable rotor protection frame of the small quadcopter proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the base of the detachable rotor protection frame for the small quadcopter proposed in this utility model;

[0028] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Positioning frame; 2. Protective cover; 3. Sliding plate; 4. Bolt; 5. Positioning ring; 6. Semicircular block; 7. Moving handle; 8. Rotating shaft; 9. Spring 1; 10. Sliding rod; 11. Base; 12. Movable shaft; 13. Movable ball; 14. Spring 2; 15. Positioning groove; 16. Sliding block; 17. Horizontal groove; 18. Horizontal rod; 19. Fixing strip. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a detachable rotor protection frame for a small quadcopter, comprising a positioning frame 1 and four positioning rings 5. A protective cover 2 is slidably connected to the inner wall of the positioning frame 1, and the aircraft is mounted on the inner wall of the protective cover 2 to provide fixed protection for the top of the aircraft. Two positioning rings 5 ​​are externally fixedly connected to the outside of the protective cover 2, fixing the position of the protective cover 2. Two other positioning rings 5 ​​are externally fixedly connected to the outside of the positioning frame 1, fixing the positions of the positioning frame 1 and the protective cover 2. Semicircular blocks 6 are slidably connected to the inner wall of each positioning ring 5, achieving a locking and fixing effect through the connection between the two semicircular blocks 6 and the two positioning rings 5. A moving handle 7 is externally fixedly connected to each semicircular block 6; turning the moving handle 7 causes the semicircular blocks 6 to slide. A rotating shaft 8 is rotatably connected to the inner wall of each positioning ring 5, fixing one end of the rotating shaft 8 to allow for positional movement under the traction of other structures, thereby cooperating to complete a reset. A reset assembly is fixedly connected to the inner wall of the rotating shaft 8 to assist in the next locking action.

[0034] The reset assembly includes a spring 9, one end of which is fixedly connected to the inner wall of a rotating shaft 8, fixing the position of one end of the spring 9. The other end of the spring 9 is fixedly connected to a sliding rod 10, whose positional movement causes deformation. The other end of the sliding rod 10 is rotatably connected to the inner wall of a moving handle 7, allowing the positional movement of the moving handle 7 to move the sliding rod 10. The outer surface of one positioning ring 5 contacts the outer surface of another positioning ring 5, forming an engaging structure. Two sliding plates 3 are slidably connected to the inner wall of the positioning frame 1, allowing for the protection and release of the internal structure of the positioning frame 1 by changing the position of the sliding plates 3. Two bolts 4 are threadedly connected to the inner wall of the sliding plates 3, with their external threads connected to the inner wall of the positioning frame 1, fixing the position of the sliding plates 3 to the positioning frame 1.

[0035] Reference Figure 1 , Figure 3 and Figure 5The positioning frame 1 has two sliding bases 11 externally connected. The shaking of the two bases 11 causes the positioning frame 1 to shake, thus buffering and protecting the internal structure of the positioning frame 1. Four movable shafts 12 are fixedly connected to the bottom of the positioning frame 1. Changes in the position of the positioning frame 1 cause the four movable shafts 12 to shake. Movable balls 13 are movably connected to the inner walls of the movable shafts 12. The shaking of the movable shafts 12 causes the movable balls 13 to shake, thus counteracting some of the shaking force. A second spring 14 is fixedly connected to the inner wall of the movable ball 13. The shaking of the movable ball 13 causes the second spring 14 to deform, thus counteracting the shaking force. Two positioning grooves 15 are formed on the inner wall of the bases 11. The other end of the second spring 14 is fixedly connected to the inner wall of the positioning groove 15 to position the movable ball 13 and fix the other end of the second spring 14. Sliding blocks 16 are slidably connected to the outside of the two movable shafts 12. A fixing strip 19 is fixedly connected to the bottom of the positioning frame 1. The position of the positioning frame 1 is fixed, which in turn fixes the position of the fixing strip 19. A horizontal rod 18 is fixedly connected to the outside of the fixing strip 19. The position of the fixing strip 19 in turn fixes the position of the horizontal rod 18. A horizontal groove 17 is formed on the inner wall of the sliding block 16. The external part of the horizontal rod 18 is movably connected to the inner wall of the two horizontal grooves 17. The horizontal grooves 17 enable the horizontal rod 18 to stably drive the position of the two sliding blocks 16.

[0036] Working principle: When disassembly is required, remove the bolt 4 of the protective locking structure. Then, slide the sliding plate 3 away from the inner wall of the positioning frame 1. Simultaneously, pry open the two moving handles 7. This positional change of the moving handles 7 causes the semicircular block 6 to move along the inner wall of the positioning ring 5, making the contact surface of the two semicircular blocks 6 perpendicular to the ground. This releases the lock between the protective cover 2 and the positioning frame 1, allowing for easy disassembly of the rotor protective frame. This significantly improves maintenance efficiency, allows for quick disassembly and inspection or replacement of parts after a collision, reduces the risk of secondary damage, facilitates rapid repair in emergency situations, and reduces downtime. During installation, simply remove the protective cover 2... When the two semicircular blocks 6 are engaged with the positioning frame 1, the contact surfaces of the two semicircular blocks 6 press against each other, causing the position of the moving handle 7 to change accordingly. This causes the sliding rod 10 to move, which in turn causes the spring 9 to deform. After the external force is removed, the return of the spring 9 can pull the sliding rod 10 to change position, which in turn can pull the semicircular blocks 6 to change position, making the contact surfaces of the two semicircular blocks 6 nearly parallel to the ground. This causes the two semicircular blocks 6 to be misaligned with the two positioning rings 5, thus establishing the engagement and preventing easy disengagement from the device. Then, the sliding plate 3 covers the engagement structure, and two bolts 4 are used to fix the position of the sliding plate 3 and the protective cover 2, thereby protecting the engagement structure.

[0037] During ground contact, the two bases 11 will shake first, causing the positioning frame 1 to shake and thus causing the four movable shafts 12 to shake. The positional change of the movable shafts 12 can cause the movable ball 13 to shake, thereby offsetting part of the shaking force. It can also cause the second spring 14 to deform, offsetting part of the shaking force, making the positioning frame 1 and the aircraft structure more stable. Furthermore, the fixing bar 19 can stabilize the overall position of the horizontal bar 18, thereby keeping the position of the two sliding blocks 16 stable through the two horizontal grooves 17. The sliding blocks 16 can keep the position of the two movable shafts 12 stable, thus restoring the entire structure to stability after shaking. The addition of a buffer structure at the bottom of the aircraft rotor protection frame can effectively mitigate the impact of uneven ground during landing, reduce the risk of rotor and fuselage vibration damage, improve landing stability and equipment reliability, reduce maintenance frequency and extend component life, and enhance adaptability in complex environments.

[0038] 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 detachable rotor protection frame for a small quadcopter, comprising a positioning frame (1) and four positioning rings (5), characterized in that: The inner wall of the positioning frame (1) is slidably connected to a protective cover (2), the two positioning rings (5) are fixedly connected to the outside of the protective cover (2), and the other two positioning rings (5) are fixedly connected to the outside of the positioning frame (1). The inner wall of the positioning ring (5) is slidably connected to a semi-circular block (6), the outside of the semi-circular block (6) is fixedly connected to a moving handle (7), the inner wall of the positioning ring (5) is rotatably connected to a rotating shaft (8), and the inner wall of the rotating shaft (8) is fixedly connected to a reset assembly.

2. The detachable rotor protection frame for a small quadcopter according to claim 1, characterized in that: The reset assembly includes a spring (9), one end of which is fixedly connected to the inner wall of the rotating shaft (8), and the other end of which is fixedly connected to a sliding rod (10).

3. The detachable rotor protection frame for a small quadcopter according to claim 2, characterized in that: The other end of the sliding rod (10) is rotatably connected to the inner wall of the moving handle (7), and the outside of the positioning ring (5) is in contact with the outside of another positioning ring (5).

4. The detachable rotor protection frame for a small quadcopter according to claim 1, characterized in that: The inner wall of the positioning frame (1) is slidably connected to two sliding plates (3), and the inner wall of the sliding plates (3) is threadedly connected to two bolts (4).

5. The detachable rotor protection frame for a small quadcopter according to claim 4, characterized in that: The external threads of the four bolts (4) are connected to the inner wall of the positioning frame (1), and the external sliding connection of the positioning frame (1) consists of two bases (11).

6. The detachable rotor protection frame for a small quadcopter according to claim 5, characterized in that: The bottom of the positioning frame (1) is fixedly connected to four movable shafts (12), the inner wall of the movable shafts (12) is movably connected to a movable ball (13), and the inner wall of the movable ball (13) is fixedly connected to a spring (14).

7. The detachable rotor protection frame for a small quadcopter according to claim 6, characterized in that: The inner wall of the base (11) has two positioning grooves (15), and the other end of the second spring (14) is fixedly connected to the inner wall of the positioning groove (15). The two movable shafts (12) are slidably connected to the outside of the sliding block (16).

8. The detachable rotor protection frame for a small quadcopter according to claim 7, characterized in that: The inner wall of the sliding block (16) is provided with a horizontal groove (17), the bottom of the positioning frame (1) is fixedly connected with a fixing strip (19), the outside of the fixing strip (19) is fixedly connected with a horizontal rod (18), and the outside of the horizontal rod (18) is movably connected to the inner wall of the two horizontal grooves (17).

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