Modularized unmanned aerial vehicle frame capable of being quickly disassembled and assembled

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a modular unmanned aerial vehicle frame capable of being quickly disassembled and assembled, the modular unmanned aerial vehicle frame comprises a main frame and a plurality of arm modules detachably connected with the main frame, a detachable mechanism is arranged between the arm modules and the main frame, and each arm module comprises a connecting pipe and a propeller arranged at one end of the connecting pipe. The detachable mechanism comprises a mounting sleeve and a positioning frame which are arranged on the connecting pipe, the mounting sleeve is arranged at the end, away from the propeller, of the connecting pipe in a sleeving mode, the positioning frame is clamped to the connecting pipe and positions the connecting pipe, the positioning frame is arranged on the side, close to the propeller, of the mounting sleeve, and a first insert nut is arranged on the mounting sleeve. A second insert nut is arranged on the positioning frame, and a first bolt is connected between the first insert nut and the main machine frame. According to the utility model, the arm module and the main frame are detachable, so that the assembly and disassembly are convenient and rapid; and the connection between the connecting pipes of the arm modules and the main frame is stable, shaking is not likely to happen, and the stability in the flight process is improved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to a modular UAV frame that can be quickly assembled and disassembled. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aircraft controlled by radio remote control equipment and their own program control devices. They are high-tech products integrating aerodynamics, materials mechanics, automatic control technology, and software technology. With the rapid advancement of science and technology, UAVs, as high-tech intelligent products, are no longer limited to early military equipment. Today, they are widely used in many fields such as emergency rescue, aerial film and television shooting, land surveying, power and pipeline inspection, pesticide spraying, and entertainment. They are also constantly becoming smaller, more accessible, and more user-friendly, and in recent years, UAVs have shown an explosive growth trend.

[0003] Most current drone frames are unibody structures, with the drone's shell mounted on the outside of the frame. The internal space houses various control boards, batteries, and other components. When certain parts require repair or replacement, the entire drone frame must be disassembled to remove and install the parts. In practical applications, drones inevitably encounter bumps and knocks. If the drone frame breaks or is damaged (especially the arms), the entire frame needs to be replaced, essentially reassembling the entire drone. This inconveniences repair and parts replacement, significantly increasing costs. Furthermore, some existing drones with detachable arms have poorly stable connections between the arms and the frame, leading to wobbling and compromised flight stability. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a modular drone frame that can be quickly assembled and disassembled, comprising a main frame and several arm modules detachably connected to the main frame. A detachable mechanism is provided between the arm modules and the main frame. Each arm module includes a connecting pipe and a propeller disposed at one end of the connecting pipe. The detachable mechanism includes a mounting sleeve and a positioning frame disposed on the connecting pipe. The mounting sleeve is fitted onto the end of the connecting pipe away from the propeller. The positioning frame is engaged with the connecting pipe and positions it. The positioning frame is positioned on the side of the mounting sleeve closer to the propeller. A first insert nut is provided on the mounting sleeve, and a second insert nut is provided on the positioning frame. A first bolt connects the first insert nut to the main frame, and a second bolt connects the second insert nut to the main frame. This modular drone frame allows for quick and easy assembly and disassembly of the arm modules from the main frame. Furthermore, the connection between the connecting pipe of the arm module and the main frame is stable and does not easily shake, improving stability during flight.

[0005] Optionally, both the mounting sleeve and the positioning frame are made of plastic. The first insert nut is set on the mounting sleeve by injection molding, and the second insert nut is set on the positioning frame by injection molding.

[0006] Optionally, the positioning frame is provided with a bayonet for engaging the connecting pipe.

[0007] Optionally, an anti-slip pad is provided on the inner wall of the bayonet, and the anti-slip pad is made of silicone.

[0008] Optionally, the anti-slip pad is provided with a plurality of anti-slip grooves along the axial direction of the connecting pipe.

[0009] Optionally, the main frame includes an upper support plate and a lower support plate, and the mounting sleeve abuts between the upper support plate and the lower support plate. The upper side of the mounting sleeve is provided with a first abutting surface for abutting with the lower side of the upper support plate, and the upper side of the mounting sleeve is provided with a second abutting surface for abutting with the upper side of the lower support plate. First support reinforcing blocks are provided on both sides of the first abutting surface, and second support reinforcing blocks are provided on both sides of the second abutting surface.

[0010] Optionally, one end of the mounting sleeve is provided with a mounting block, the first insert nut is provided on the mounting block, the mounting sleeve is provided with a insertion hole for inserting the connecting pipe, and the mounting block is provided with a blocking part for blocking and limiting the end of the connecting pipe on the side near the insertion hole.

[0011] Optionally, the mounting sleeve is provided with a third insert nut, the third insert nut being threadedly connected to a third bolt, and the mounting sleeve being provided with a mounting hole for installing the third bolt; during installation, one end of the third bolt is passed through the mounting hole and the connecting tube in sequence, and then screwed into the third insert nut, so that the end of the mounting sleeve is fixed to the connecting tube.

[0012] Optionally, a mounting bracket is provided at the end of the connecting pipe away from the main frame. The mounting bracket includes a first frame and a second frame that are spliced ​​together. A fourth insert nut is provided on the first frame, and a fourth bolt is threadedly connected to the fourth insert nut. The first frame and the second frame are fixed by the fourth bolt, and the connecting pipe is fixed between the first frame and the second frame.

[0013] Optionally, a motor for driving the propeller to rotate is provided on the upper side of the second frame.

[0014] Compared to existing technologies, the modular UAV frame of this invention features quick-assembly and disassembly, allowing for easy and rapid assembly and disassembly of the arm modules and main frame. Furthermore, the connection between the arm module's connecting pipe and the main frame is stable and prevents wobbling, improving stability during flight. Both the mounting sleeve and the main frame are made of lightweight plastic, reducing the overall weight of the aircraft and enhancing flight stability and agility. The positioning frame is equipped with latches for engaging the connecting pipes, allowing for detachable connection. When a connecting pipe is damaged, only the connecting pipe needs to be replaced; the entire frame does not require replacement. The frame features low maintenance costs; anti-slip pads made of silicone are installed on the inner wall of the bayonet, preventing the connecting tube from sliding relative to the inner wall of the bayonet and providing a certain degree of shock absorption, thus improving flight stability; the first and second support reinforcing blocks increase the area of ​​the first and second contact surfaces, respectively, making the contact more stable; during installation, one end of the connecting tube is directly inserted into the mounting sleeve, and the blocking part limits the end of the connecting tube, ensuring that the connecting tube is axially inserted into place, guaranteeing the accuracy of the installation position, reducing assembly difficulty, and increasing assembly speed. Attached Figure Description

[0015] Figure 1 This is a perspective view of the modular drone frame that can be quickly assembled and disassembled according to this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of section A;

[0017] Figure 3 This is a structural schematic diagram of the modular drone frame and arm module that can be quickly assembled and disassembled according to this utility model;

[0018] Figure 4 This is a structural schematic diagram of the modular drone frame positioning frame that can be quickly disassembled and assembled according to this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of section B;

[0020] Figure 6 This is a structural schematic diagram of the first insert nut portion of the modular drone frame that can be quickly disassembled and assembled according to this utility model;

[0021] Figure 7 This is a structural schematic diagram of the modular drone frame blocking part that can be quickly disassembled and assembled according to this utility model;

[0022] Figure 8 This is a structural schematic diagram of the second support reinforcement block of the modular UAV frame that can be quickly disassembled and assembled according to this utility model;

[0023] Figure 9 This is a structural schematic diagram of the fourth insert nut of the modular drone frame that can be quickly disassembled and assembled according to this utility model;

[0024] The component names corresponding to the various labels in the figure are as follows: 1 is the main frame, 11 is the upper support plate, 12 is the lower support plate, 2 is the arm module, 21 is the connecting pipe, 22 is the propeller, 3 is the mounting sleeve, 301 is the first insert nut, 302 is the third insert nut, 303 is the third bolt, 304 is the mounting hole, 31 is the first abutment surface, 311 is the first support reinforcement block, 32 is the second abutment surface, 321 is the second support reinforcement block, 33 is the mounting block, 331 is the blocking part, 34 is the insertion hole, 4 is the positioning frame, 41 is the bayonet, 42 is the anti-slip pad, 43 is the anti-slip groove, 401 is the second insert nut, 51 is the first bolt, 52 is the second bolt, 61 is the first frame, 62 is the second frame, 63 is the fourth insert nut, 64 is the fourth bolt, and 65 is the motor. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] See Figures 1-9 This utility model provides a modular unmanned aerial vehicle (UAV) frame that can be quickly assembled and disassembled, including a main frame 1 and several arm modules 2 detachably connected to the main frame 1. A detachable mechanism is provided between the arm modules 2 and the main frame 1. Each arm module 2 includes a connecting pipe 21 and a propeller 22 disposed at one end of the connecting pipe 21. The detachable mechanism includes a mounting sleeve 3 and a positioning frame 4 disposed on the connecting pipe 21. The mounting sleeve 3 is fitted onto the end of the connecting pipe 21 away from the propeller 22, and the positioning frame 4 is engaged with the connecting pipe 21 and positions it, ensuring that the connecting pipe 21 and the main frame 1 are not separated. It is prone to relative swaying; the positioning frame 4 is placed on the side of the mounting sleeve 3 near the propeller 22. The mounting sleeve 3 is provided with a first insert nut 301, and the positioning frame 4 is provided with a second insert nut 401. The first insert nut 301 is connected to the main frame 1 by a first bolt 51, and the second insert nut 401 is connected to the main frame 1 by a second bolt 52; the modular UAV frame of this utility model can be quickly disassembled and assembled. The arm module and the main frame are detachable, and the disassembly and assembly are convenient and quick. Moreover, the connection between the connecting pipe of the arm module and the main frame is stable and not prone to swaying, which improves the stability during flight.

[0029] Specifically, because the arm modules often use lightweight materials (such as carbon fiber, aluminum alloy, or engineering plastics), these materials are prone to wear or stripping when directly tapped with threads; insert nuts (usually steel or brass) are harder and can withstand repeated disassembly and assembly without damaging the threads; moreover, the high-frequency vibrations during drone flight can easily cause ordinary threads to loosen, and insert nuts, through process embedding, can significantly reduce the risk of thread loosening; in addition, the insert nuts are pre-embedded during the arm's production, and during installation, only the bolts need to be tightened by aligning them with the main frame holes, eliminating additional fixing steps (such as nuts or washers) and improving assembly efficiency; When the arm module is damaged, it can be replaced simply by removing the bolts, without the need for thread repair, thus reducing maintenance costs. Compared to the traditional bolt and nut solution, the insert nut is built into the arm, reducing external protruding parts, wind resistance, and weight, making it suitable for weight-sensitive UAV designs. There is no need to reserve space for nut operation on the main frame, making the connection more compact and facilitating the overall layout. In this embodiment, the insert nut can be a self-locking insert nut (i.e., an insert self-locking nut), which can prevent the bolt from loosening during vibration. The self-locking insert nut is existing technology and will not be described in detail here.

[0030] See Figure 1 , Figure 2 , Figure 4 and Figure 7Both the mounting sleeve 3 and the positioning frame 4 are made of plastic and feature a lightweight design to reduce the overall weight of the aircraft, ensuring stable and responsive flight. The first insert nut 301 is installed on the mounting sleeve 3 using an injection molding process, and the second insert nut 401 is installed on the positioning frame 4 using an injection molding process. The insert nuts and the plastic substrate are interlocked by molten material, resulting in a bonding force far exceeding that of later press-fit inserts. This provides higher tensile and torsional strength, higher fuselage structural strength, and higher flight stability.

[0031] See Figure 1 , Figure 2 , Figure 4 and Figure 5 The positioning frame 4 is equipped with a bayonet 41 for engaging the connecting tube 21. The connecting tube 21 can be engaged / disengaged from the bayonet 41 to achieve a detachable connection with the positioning frame 4. If the connecting tube 21 is damaged, only the connecting tube 21 needs to be replaced, without replacing the positioning frame 4, resulting in low maintenance costs. An anti-slip pad 42 is provided on the inner wall of the bayonet 41. The anti-slip pad 42 is made of silicone and is glued to the inner wall of the bayonet 41. The anti-slip pad 42 prevents the connecting tube 21 from sliding relative to the inner wall of the bayonet 41, ensuring stable positioning of the positioning frame 4 and providing a certain shock absorption effect for the connecting tube 21, thus improving flight stability. Multiple anti-slip grooves 43 are provided on the anti-slip pad 42 along the axial direction of the connecting tube 21 to prevent relative displacement between the connecting tube 21 and the positioning frame 4 in the axial direction, providing a good anti-slip effect.

[0032] See Figure 1 , Figure 2 , Figure 6 and Figure 8 The main frame 1 includes an upper support plate 11 and a lower support plate 12. The mounting sleeve 3 abuts against the upper support plate 11 and the lower support plate 12. The upper side of the mounting sleeve 3 is provided with a first abutting surface 31 for abutting against the lower side of the upper support plate 11, and the upper side of the mounting sleeve 3 is provided with a second abutting surface 32 for abutting against the upper side of the lower support plate 12. The first abutting surface 31 is provided with a first support reinforcing block 311 on both sides, and the second abutting surface 32 is provided with a second support reinforcing block 321 on both sides. The first support reinforcing block 311 and the second support reinforcing block 321 can respectively increase the area of ​​the first abutting surface 31 and the second abutting surface 32, making the abutment more stable.

[0033] See Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8One end of the mounting sleeve 3 is provided with a mounting block 33, and a first insert nut 301 is provided on the mounting block 33. The mounting sleeve 3 is provided with an insertion hole 34 for inserting the connecting pipe 21. The mounting block 33 is provided with a blocking part 331 on the side near the insertion hole 34 for blocking and limiting the end of the connecting pipe 21. During installation, one end of the connecting pipe 21 is directly inserted into the mounting sleeve 3, and the blocking part 331 blocks and limits the end of the connecting pipe 21, that is, the connecting pipe 21 is axially inserted into the position, ensuring the accuracy of the installation position, reducing the assembly difficulty, and improving the assembly speed. A third insert nut 302 is provided on the mounting sleeve 3. The third insert nut 302 is threadedly connected to the third bolt 303, and the mounting sleeve 3 is provided with a mounting hole 304 for mounting the third bolt 303. During installation, one end of the third bolt 303 is passed through the mounting hole 304 and the connecting pipe 21 in sequence, and then screwed into the third insert nut 302 to fix the end of the mounting sleeve 3 to the connecting pipe 21. This makes the mounting sleeve 3 and the connecting pipe 21 detachably connected, which is convenient for disassembly and assembly. When the connecting pipe 21 is damaged, it is only necessary to remove the mounting sleeve 3 and connect it to the new connecting pipe. The maintenance is convenient and the maintenance cost is low. The connecting pipe 21 is provided with a through hole for the third bolt 303 to pass through.

[0034] See Figure 1 , Figure 3 and Figure 9 A mounting bracket is provided at the end of the connecting pipe 21 away from the main frame 1. The mounting bracket includes a first frame 61 and a second frame 62 that are spliced ​​together. A fourth insert nut 63 is provided on the first frame 61, and a fourth bolt 64 is threadedly connected to the fourth insert nut 63. The first frame 61 and the second frame 62 are fixed together by the fourth bolt 64. The connecting pipe 21 is fixed between the first frame 61 and the second frame 62. If the connecting pipe 21 is damaged, the first frame 61 and the second frame 62 can be disassembled and connected to a new connecting pipe 21, which reduces maintenance costs. A motor 65 for driving the propeller 22 to rotate is provided on the upper side of the second frame 62. The propeller 22 is connected to the motor shaft of the motor 65. The motor 65 is detachably connected to the second frame 62 by bolts. If the motor 65 is damaged, it can be disassembled for repair or replacement and reinstalled on the second frame 62. The modular design makes maintenance convenient.

[0035] This utility model features a modular drone frame with quick assembly and disassembly. The arm modules are detachable from the main frame, allowing for convenient and rapid assembly and disassembly. The connection between the arm module's connecting pipe and the main frame is stable and prevents shaking, improving stability during flight. Both the mounting sleeve and the main frame are made of lightweight plastic to reduce the overall weight of the drone, resulting in stable and agile flight. The positioning frame has latches for engaging the connecting pipes, allowing for detachable connection. If a connecting pipe is damaged, only the pipe needs to be replaced; the positioning frame does not need to be replaced. Low repair cost; anti-slip pads made of silicone are provided on the inner wall of the bayonet, which prevents the connecting pipe from sliding relative to the inner wall of the bayonet and has a certain shock absorption effect, improving flight stability; the first and second support reinforcing blocks can increase the area of ​​the first and second contact surfaces, making the contact more stable; during installation, one end of the connecting pipe is directly inserted into the installation sleeve, and the blocking part blocks and limits the end of the connecting pipe, that is, the connecting pipe is axially inserted into the position, ensuring the accuracy of the installation position, reducing assembly difficulty, and improving assembly speed.

[0036] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0040] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A modular unmanned aerial vehicle (UAV) frame that can be quickly assembled and disassembled, characterized in that, The system includes a main frame (1) and several arm modules (2) detachably connected to the main frame (1). A detachable mechanism is provided between the arm modules (2) and the main frame (1). Each arm module (2) includes a connecting pipe (21) and a propeller (22) disposed at one end of the connecting pipe (21). The detachable mechanism includes a mounting sleeve (3) and a positioning frame (4) disposed on the connecting pipe (21). The mounting sleeve (3) is fitted onto the end of the connecting pipe (21) away from the propeller (22). The positioning frame (3)... 4) The positioning frame (4) is snapped onto the connecting pipe (21) and positioned on the connecting pipe (21). The positioning frame (4) is placed on the side of the mounting sleeve (3) close to the propeller (22). The mounting sleeve (3) is provided with a first insert nut (301), and the positioning frame (4) is provided with a second insert nut (401). The first insert nut (301) is connected to the main frame (1) by a first bolt (51), and the second insert nut (401) is connected to the main frame (1) by a second bolt (52).

2. The modular unmanned aerial vehicle frame with quick assembly and disassembly according to claim 1, characterized in that, Both the mounting sleeve (3) and the positioning frame (4) are made of plastic. The first insert nut (301) is set on the mounting sleeve (3) by injection molding insert process, and the second insert nut (401) is set on the positioning frame (4) by injection molding insert process.

3. The modular unmanned aerial vehicle frame that can be quickly assembled and disassembled according to claim 1, characterized in that, The positioning frame (4) is provided with a bayonet (41) for engaging the connecting pipe (21).

4. The modular unmanned aerial vehicle frame that can be quickly assembled and disassembled according to claim 3, characterized in that, An anti-slip pad (42) is provided on the inner wall of the bayonet (41), and the anti-slip pad (42) is made of silicone.

5. The modular unmanned aerial vehicle frame with quick assembly and disassembly according to claim 4, characterized in that, The anti-slip pad (42) has multiple anti-slip grooves (43) arranged along the axial direction of the connecting pipe (21).

6. The modular unmanned aerial vehicle frame with quick assembly and disassembly according to claim 1, characterized in that, The main frame (1) includes an upper support plate (11) and a lower support plate (12). The mounting sleeve (3) abuts between the upper support plate (11) and the lower support plate (12). The upper side of the mounting sleeve (3) is provided with a first abutting surface (31) for abutting with the lower side of the upper support plate (11). The upper side of the mounting sleeve (3) is provided with a second abutting surface (32) for abutting with the upper side of the lower support plate (12). The first abutting surface (31) is provided with a first support reinforcing block (311) on both sides. The second abutting surface (32) is provided with a second support reinforcing block (321) on both sides.

7. The modular unmanned aerial vehicle frame that can be quickly assembled and disassembled according to claim 1, characterized in that, One end of the mounting sleeve (3) is provided with a mounting block (33), the first insert nut (301) is provided on the mounting block (33), the mounting sleeve (3) is provided with a insertion hole (34) for inserting the connecting pipe (21), and the mounting block (33) is provided with a blocking part (331) for blocking and limiting the end of the connecting pipe (21) on the side near the insertion hole (34).

8. The modular unmanned aerial vehicle frame that can be quickly assembled and disassembled according to claim 1, characterized in that, The mounting sleeve (3) is provided with a third insert nut (302), and the third insert nut (302) is threadedly connected to a third bolt (303). The mounting sleeve (3) is provided with a mounting hole (304) for installing the third bolt (303). During installation, one end of the third bolt (303) is passed through the mounting hole (304) and the connecting tube (21) in sequence, and then screwed into the third insert nut (302) so that the end of the mounting sleeve (3) is fixed to the connecting tube (21).

9. The modular unmanned aerial vehicle frame with quick assembly and disassembly according to claim 1, characterized in that, The connecting pipe (21) is provided with a mounting bracket at one end away from the main frame (1). The mounting bracket includes a first frame (61) and a second frame (62) that are spliced ​​together. A fourth insert nut (63) is provided on the first frame (61). A fourth bolt (64) is threadedly connected to the fourth insert nut (63). The first frame (61) and the second frame (62) are fixed by the fourth bolt (64). The connecting pipe (21) is fixed between the first frame (61) and the second frame (62).

10. The modular unmanned aerial vehicle frame with quick assembly and disassembly according to claim 9, characterized in that, The upper side of the second frame (62) is provided with a motor (65) for driving the propeller (22) to rotate.

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