Small unmanned rotorcraft arm folding structure for transverse folding

Abstract

The utility model discloses a small rotor unmanned aerial vehicle arm folding structure for transverse folding, and relates to the technical field of unmanned aerial vehicles, the small rotor unmanned aerial vehicle arm folding structure comprises an arm body and an upper cover plate, the upper cover plate is arranged above the left side of the arm body, and a damping bearing hole site is formed in the lower surface of the upper cover plate; the arm body is clamped between the upper cover plate and the supporting table, an upper connecting assembly and a lower connecting assembly are arranged between the upper cover plate and the lower cover plate, threading holes are formed in the left side and the right side of the upper connecting assembly and the left side and the right side of the lower connecting assembly correspondingly, and a first positioning groove and a second positioning groove are formed in the lower surface of the lower connecting assembly. And a limiting block is mounted below the lower cover plate. The small unmanned rotorcraft arm folding structure for transverse folding is provided with the damping bearing hole site, a damping bearing reinforcing technology is introduced into the folding mechanism through the damping bearing hole site, unnecessary shaking of the arm body in the operation process is effectively restrained, and therefore the accuracy and durability of the whole equipment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, and particularly to an arm folding structure of a small rotor unmanned aerial vehicle for horizontal folding. Background Technique

[0002] At present, the folding arm design of unmanned aerial vehicles generally relies on foldable materials or elaborate structural layouts to achieve its compactness.

[0003] In the application of foldable materials, designers tend to choose materials with low stiffness or elasticity to construct the arm, thereby achieving the folding effect on the structure through the flexibility of the material itself. However, although this method is innovative, it also has significant limitations: the firmness of the fuselage is greatly reduced, becoming relatively fragile, difficult to withstand the overload impact in collisions, and prone to tearing or functional failure in extreme environments, thus limiting the wide range of its application scenarios.

[0004] On the other hand, the foldable structure design is divided into two main schools: multi-joint folding and continuous elastic structure. Unmanned aerial vehicles with continuous elastic structures show higher flexibility in operation, but their structural rigidity is insufficient, they are more suitable for small unmanned aerial vehicles, and their stability is poor when facing collisions.

[0005] In contrast, the multi-joint folding mechanism can reduce the folding volume of the unmanned aerial vehicle while maintaining a certain structural strength, so it has become the current mainstream foldable unmanned aerial vehicle design scheme. Nevertheless, the existing multi-joint folding mechanisms still face challenges such as relatively large weight, high installation complexity, and more occupied space, and need to be further optimized and innovated.

[0006] Therefore, we propose an arm folding structure of a small rotor unmanned aerial vehicle for horizontal folding to solve the problems raised above. Content of the Utility Model

[0007] The purpose of the utility model is to provide an arm folding structure of a small rotor unmanned aerial vehicle for horizontal folding to solve the problem that the folding mechanism of unmanned aerial vehicles in the current market needs further innovation proposed in the above background technique.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a folding structure of a small rotary-wing UAV arm for horizontal folding, comprising an arm body and an upper cover plate, an upper cover plate is arranged on the upper left side of the arm body, and a support platform and a lower cover plate are arranged in sequence below the upper cover plate, a damping bearing hole is installed on the lower surface of the upper cover plate, the arm body is clamped between the upper cover plate and the support platform, an upper connecting component and a lower connecting component are arranged between the upper cover plate and the lower cover plate, threading holes are provided on the left and right sides of the upper connecting component and the lower connecting component, a first positioning groove and a second positioning groove are provided on the lower surface of the lower connecting component, a limit block is installed below the lower cover plate, and the limit block passes through the limit block, and a telescopic spring is installed on the limit assembly.

[0009] Preferably, both the upper cover plate and the lower cover plate are provided with positioning holes, and a plurality of positioning holes are provided, and the upper cover plate and the lower cover plate are connected by limiting pins.

[0010] With the above structural design, the upper cover plate and the lower cover plate can be connected and fixed conveniently through the cooperation of the limit pin and the positioning hole.

[0011] Preferably, the number of the positioning holes is the same as the number of the limiting pins, and the limiting pins can pass through the support platform.

[0012] With the above structural design, the support platform can be clamped between the upper cover plate and the lower cover plate, and the support platform can prop up the entire folding mechanism.

[0013] Preferably, damping is arranged in the damping bearing hole.

[0014] The above structural design enhances the stability of the folding structure and effectively suppresses unnecessary shaking of the arm body during operation, thereby ensuring the accuracy and durability of the overall equipment.

[0015] Preferably, both the upper connecting component and the lower connecting component are provided with pin holes, and the center line of the pin hole on the upper connecting component coincides with the center line of the pin hole on the lower connecting component.

[0016] The above structural design facilitates the connection between the upper connecting component and the lower connecting component.

[0017] Preferably, the threading holes on the upper connecting component and the threading holes on the lower connecting component correspond to each other.

[0018] The above structural design is adopted. In order to improve the convenience of assembly, wire threading holes are cleverly set inside the folding mechanism. This design allows key wires such as control wires and power wires to pass through easily, which not only simplifies the assembly process, but also optimizes the internal layout and improves the neatness and maintainability of the overall structure.

[0019] Preferably, locking holes are provided on the outside of the upper connecting component and the lower connecting component, and locking bolt assemblies are installed on the locking holes. The limit assembly is slidably connected to the limit block, and the limit assembly can be engaged with the first positioning groove and the second positioning groove when moving. The first positioning groove and the second positioning groove are designed with a conical structure.

[0020] By adopting the above-mentioned structural design, the installation of the upper connecting assembly and the lower connecting assembly is completed through the cooperation of the locking bolt assembly and the locking hole. In the design of the first positioning groove and the second positioning groove, a small conical surface structure is adopted, and the natural fitting characteristics of the conical surface are utilized to effectively reduce the gap between the components, thereby suppressing the occurrence of the virtual position phenomenon, ensuring the tightness and stability of the arm body during the folding and unfolding process. When the arm body needs to be folded, the limit assembly is pulled upward, the arm body is rotated to the second positioning groove, and the second positioning groove is pressed downward under the action of the rebound force of the telescopic spring; when the arm body needs to be unfolded, similarly, the limit assembly is pulled upward, the arm body is rotated to the first positioning groove, and the first positioning groove is pressed downward to complete the unfolding.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the folding structure of the arm of the small rotary-wing UAV for horizontal folding:

[0022] 1. A damping bearing hole is provided, and the damping bearing reinforcement technology is introduced into the folding mechanism through the damping bearing hole, which effectively suppresses the unnecessary shaking of the arm body during operation, thereby ensuring the accuracy and durability of the overall equipment;

[0023] 2. A first positioning groove and a second positioning groove are provided. In order to realize the smooth folding and stable unfolding of the machine arm body, two precisely positioned first positioning grooves and second positioning grooves are designed. Through the precise limiting function of the limiting component, not only the operation process is simplified, but also the accuracy and reliability of the changing state of the machine arm body are greatly improved;

[0024] 3. A first positioning groove and a second positioning groove are provided. A small conical surface structure is adopted in the design of the first positioning groove and the second positioning groove. This unique design cleverly utilizes the natural fitting characteristics of the conical surface, effectively reduces the gap between components, thereby suppressing the occurrence of the virtual position phenomenon and ensuring the tightness and stability of the arm body during folding and unfolding;

[0025] 4. Wire threading holes are set. In order to improve the convenience of assembly, wire threading holes are cleverly set inside the folding mechanism. This design allows key wires such as control wires and power wires to pass through easily, which not only simplifies the assembly process, but also optimizes the internal layout and improves the neatness and maintainability of the overall structure;

[0026] 5. There is a support platform. Through an innovative design concept of the support platform, an efficient and flexible lifting and folding mechanism is designed. This design not only optimizes the space utilization efficiency but also significantly improves the overall stability and operability of the mechanism. With the help of a precise support structure, this folding mechanism can easily achieve a smooth transition between lifting and folding, bringing an unprecedented convenient experience to users. Brief Description of the Drawings

[0027] Figure 1 Schematic diagram of the overall structure of the folding component of the present utility model;

[0028] Figure 2 Exploded view of the folding component of the present utility model;

[0029] Figure 3 Schematic diagram of the structure of the lower surface of the upper cover plate of the present utility model;

[0030] Figure 4 Schematic diagram of the positional structure of the limit component, the first limit groove and the second limit groove of the present utility model;

[0031] Figure 5 Schematic diagram of the unfolded structure of the machine arm of the present utility model;

[0032] Figure 6 Schematic diagram of the folded structure of the machine arm of the present utility model.

[0033] In the figure: 1. Machine arm body; 2. Upper cover plate; 3. Support platform; 4. Lower cover plate; 5. Positioning hole; 6. Limit pin; 7. Damping bearing hole position; 8. Upper connection component; 9. Lower connection component; 10. Pin position hole; 11. Wire threading hole; 12. Locking hole; 13. Locking bolt assembly; 14. First positioning groove; 15. Second positioning groove; 16. Limit component; 17. Telescopic spring; 18. Limit block. Detailed Description of the Preferred Embodiment

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] Please refer to Figures 1-6, the present utility model provides a technical solution: a folding structure for the arm of a small rotor unmanned aerial vehicle for horizontal folding, including an arm body 1, an upper cover plate 2, a support platform 3, a lower cover plate 4, positioning holes 5, limit pins 6, damping bearing holes 7, an upper connection assembly 8, a lower connection assembly 9, pin holes 10, wire passing holes 11, locking holes 12, locking bolt assemblies 13, a first positioning groove 14, a second positioning groove 15, a limit assembly 16, a telescopic spring 17 and a limit block 18. An upper cover plate 2 is arranged above the left side of the arm body 1, and a support platform 3 and a lower cover plate 4 are sequentially arranged below the upper cover plate 2. Positioning holes 5 are opened on both the upper cover plate 2 and the lower cover plate 4, and a plurality of positioning holes 5 are provided. The upper cover plate 2 and the lower cover plate 4 are connected by limit pins 6. Through the cooperation of the limit pins 6 and the positioning holes 5, it is convenient to connect and fix the upper cover plate 2 and the lower cover plate 4. The number of positioning holes 5 is the same as the number of limit pins 6, and the limit pins 6 can penetrate through the support platform 3. The support platform 3 can be clamped between the upper cover plate 2 and the lower cover plate 4. The support platform 3 can support the entire folding mechanism. A damping bearing hole 7 is installed on the lower surface of the upper cover plate 2, and damping is provided inside the damping bearing hole 7, enhancing the stability of the folding structure and effectively suppressing unnecessary shaking of the arm body 1 during operation, thereby ensuring the accuracy and durability of the overall device. The arm body 1 is clamped between the upper cover plate 2 and the support platform 3. An upper connection assembly 8 and a lower connection assembly 9 are arranged between the upper cover plate 2 and the lower cover plate 4. Pin holes 10 are opened on both the upper connection assembly 8 and the lower connection assembly 9. The center line of the pin hole 10 on the upper connection assembly 8 coincides with the center line of the pin hole 10 on the lower connection assembly 9, facilitating the connection of the upper connection assembly 8 and the lower connection assembly 9. The wire passing holes 11 on the upper connection assembly 8 and the lower connection assembly 9 correspond to each other. In order to improve the convenience of assembly, wire passing holes 11 are ingeniously arranged inside the folding mechanism. This design enables key wires such as control wires and power supply wires to easily pass through, not only simplifying the assembly process but also optimizing the internal layout, improving the cleanliness and maintainability of the overall structure. Wire passing holes 11 are opened on both the left and right sides of the upper connection assembly 8 and the lower connection assembly 9. A first positioning groove 14 and a second positioning groove 15 are opened on the lower surface of the lower connection assembly 9. A limit block 18 is installed below the lower cover plate 4, and a limit assembly 16 passes through the limit block 18. A telescopic spring 17 is installed on the limit assembly 16.

[0036] Locking holes 12 are provided on the outsides of both the upper connecting component 8 and the lower connecting component 9. Locking bolt assemblies 13 are installed on the locking holes 12. The limiting component 16 is slidably connected to the limiting block 18, and the limiting component 16 can be engaged with the first positioning groove 14 and the second positioning groove 15 when moving. The first positioning groove 14 and the second positioning groove 15 are designed with a conical surface structure. Through the cooperation of the locking bolt assembly 13 and the locking hole 12, the installation of the upper connecting component 8 and the lower connecting component 9 is completed. In the design of the first positioning groove 14 and the second positioning groove 15, a small conical surface structure is adopted, and the natural fitting characteristic of the conical surface is utilized to effectively reduce the gap between components, thereby suppressing the occurrence of the virtual position phenomenon and ensuring the tightness and stability of the arm body 1 during the folding and unfolding processes. When the arm body 1 needs to be folded, the limiting component 16 is pulled upward, the arm body 1 is rotated to the second positioning groove 15, and then it is pressed downward and aligned with the second positioning groove 15 under the action of the resilience of the telescopic spring 17. When the arm body 1 needs to be unfolded, similarly, the limiting component 16 is pulled upward, the arm body 1 is rotated to the first positioning groove 14, and then it is pressed downward and aligned with the first positioning groove 14 to complete the unfolding.

[0037] Working principle: When using the folding structure of the arm of the small rotary-wing unmanned aerial vehicle for horizontal folding, first, when the arm body 1 needs to be folded, the limiting component 16 is pulled upward, the arm body 1 is rotated to the second positioning groove 15, and then it is pressed downward and aligned with the second positioning groove 15 under the action of the resilience of the telescopic spring 17. When the arm body 1 needs to be unfolded, similarly, the limiting component 16 is pulled upward, the arm body 1 is rotated to the first positioning groove 14, and then it is pressed downward and aligned with the first positioning groove 14 to complete the unfolding. The damping bearing strengthening technology is introduced into the folding mechanism through the damping bearing hole position 7, effectively suppressing the unnecessary shaking of the arm body 1 during operation, thereby ensuring the accuracy and durability of the overall device. Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A folding structure for the arm of a small rotary-wing unmanned aerial vehicle for horizontal folding, comprising an arm body (1) and an upper cover plate (2), characterized in that: Above the left side of the arm body (1), there is an upper cover plate (2). Below the upper cover plate (2), there are a support platform (3) and a lower cover plate (4) arranged in sequence. On the lower surface of the upper cover plate (2), there is a damping bearing hole position (7). The arm body (1) is clamped between the upper cover plate (2) and the support platform (3). Between the upper cover plate (2) and the lower cover plate (4), there are an upper connection component (8) and a lower connection component (9). On the left and right sides of the upper connection component (8) and the lower connection component (9), there are threading holes (11). On the lower surface of the lower connection component (9), there are a first positioning groove (14) and a second positioning groove (15). Below the lower cover plate (4), there is a limit block (18) installed, and a limit component (16) passes through the limit block (18). On the limit component (16), there is a telescopic spring (17) installed.

2. The folding structure of the arm of the small rotor UAV for horizontal folding according to claim 1, wherein: On both the upper cover plate (2) and the lower cover plate (4), there are positioning holes (5), and there are multiple positioning holes (5). The upper cover plate (2) and the lower cover plate (4) are connected by limit pins (6).

3. The folding structure of the arm of the small rotary-wing UAV for horizontal folding according to claim 2, wherein: The number of the positioning holes (5) is the same as the number of the limit pins (6), and the limit pins (6) can pass through the support platform (3).

4. The folding structure of the arm of a small rotor UAV for horizontal folding according to claim 1, wherein: There is damping in the damping bearing hole position (7).

5. The folding structure of the arm of the small rotor UAV for horizontal folding according to claim 1, characterized in that: On both the upper connection component (8) and the lower connection component (9), there are pin position holes (10). The center line of the pin position hole (10) on the upper connection component (8) coincides with the center line of the pin position hole (10) on the lower connection component (9).

6. The folding structure of the arm of the small rotor UAV for horizontal folding according to claim 1, wherein: The threading holes (11) on the upper connection component (8) and the lower connection component (9) correspond to each other.

7. The folding structure of the arm of the small rotor UAV for horizontal folding according to claim 1, wherein: On the outside of both the upper connection component (8) and the lower connection component (9), there are locking holes (12). On the locking holes (12), there are locking bolt assemblies (13) installed. The limit component (16) is slidably connected with the limit block (18), and when the limit component (16) moves, it can be clamped with the first positioning groove (14) and the second positioning groove (15). The first positioning groove (14) and the second positioning groove (15) are designed with a conical surface structure.

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