Unmanned aerial vehicle frame structure

Abstract

An upper connecting plate, a middle connecting plate and a lower connecting plate are fixed through connecting columns, an arm is clamped between the middle connecting plate and the lower connecting plate in a staggered mode through a first buckle and a second buckle, one end of the first buckle is embedded into a second positioning hole to be fixed to the middle connecting plate, and the other end of the first buckle is fixed to the lower connecting plate. One end of the second buckle is embedded into the first positioning hole to be fixed with the middle connecting plate, one end of the second buckle is embedded into the first positioning hole to be fixed with the middle connecting plate, one end of the second buckle is embedded into the third positioning hole to be fixed with the lower connecting plate, and the vehicle arm clamping position is of a step structure and is fixed through a fastener. And lightening holes are formed in the connecting plates, so that the balance and the weight of the unmanned aerial vehicle are better controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a UAV frame structure. Background Art

[0002] Drone frame structure is a complex and important area. With the rapid development of drone technology, particularly in the field of drone racing, frame design directly impacts the performance and stability of the aircraft. Traditional racing frames are often made of carbon fiber. However, some existing frames are prone to resonance issues during high-speed flight, resulting in reduced control performance and impacting racing results. Frame stability and anti-resonance capabilities are particularly critical during frequent sharp turns and high-intensity maneuvers. Therefore, developing a racing frame with an appropriate wheelbase, lightweight design, and excellent anti-resonance performance has become a key requirement in the racing drone industry.

[0003] In the prior art, patent number CN220076686U discloses a frame lock structure for a drone, which includes a frame, an arm, and a lock. The frame is provided with a mounting portion with an outward opening on the side wall and a clamping block at the opening. The arm is provided with an inserting portion. The lock is sleeved on the inserting portion and provided with a bayonet that cooperates with the clamping block. The arm is inserted and installed in the mounting portion, and the clamping block is installed in the bayonet. The frame, inserting portion, and lock are provided with aligned fastening holes and are locked by fasteners. Utility Model Content

[0004] The purpose of the utility model is to provide a UAV frame structure with a stable arm structure, good balance and light weight.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a drone frame structure, including an upper connecting plate, a middle connecting plate and a lower connecting plate fixed by connecting columns, and the arm is staggeredly connected between the middle connecting plate and the lower connecting plate by a first clip and a second clip.

[0006] Preferably, one end of the first clip is embedded in the second positioning hole and fixed to the middle connecting plate, and the other end is embedded in the fourth positioning hole and fixed to the lower connecting plate.

[0007] Preferably, one end of the second clip is embedded in the first positioning hole and fixed to the middle connecting plate, and the other end is embedded in the third positioning hole and fixed to the lower connecting plate.

[0008] Preferably, the arm clamping portion is in a stepped structure and is fixed by a fastener.

[0009] Preferably, a rotor fixing hole and a rotor mounting hole are provided at one end of the arm.

[0010] Preferably, the upper connecting plate is provided with several upper plate fixing holes around it, the first weight-reducing hole and the fourth weight-reducing hole are symmetrically distributed on both sides of the upper connecting plate, and the second weight-reducing hole and the third weight-reducing hole are arranged at the central axis position of the upper connecting plate.

[0011] Preferably, a plurality of middle plate fixing holes are provided around the middle connecting plate, and two symmetrical triangular weight-reducing holes are provided on the middle connecting plate.

[0012] Preferably, a plurality of lower plate fixing holes are provided around the lower connecting plate, and a circular weight-reducing hole is provided in the center of the lower connecting plate.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the arm of the present invention adopts a clip-on connection, the connection is a stepped structure, which is more stable, and weight-reducing holes are provided on the connecting plate, so as to better control the balance and weight of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 The schematic diagram of the upper connecting plate and the middle connecting plate is omitted for the present invention.

[0016] Figure 3 It is a top view of the utility model.

[0017] Figure 4 This is the cross-sectional view AA of the present invention.

[0018] Figure 5 This is a schematic diagram of the upper connecting plate of the present utility model.

[0019] Figure 6 This is a schematic diagram of the connecting plate in the present utility model.

[0020] Figure 7 This is a schematic diagram of the lower connecting plate of the present invention.

[0021] In the figure: 1. Arm; 11. Rotor fixing hole; 12. Rotor mounting hole; 2. Connecting column; 3. Upper connecting plate; 31. First weight-reducing hole; 32. Second weight-reducing hole; 33. Upper plate fixing hole; 34. Third weight-reducing hole; 35. Fourth weight-reducing hole; 4. Middle connecting plate; 41. First positioning hole; 42. Middle plate fixing hole; 43. Second positioning hole; 44. Triangular weight-reducing hole; 5. Lower connecting plate; 51. Lower plate fixing hole; 52. Third positioning hole; 53. Fourth positioning hole; 54. Circular weight-reducing hole; 6. Fixing piece; 7. First buckle; 8. Second buckle. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further described in detail below through specific embodiments and in combination with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1: Reference Figures 1 to 6 , a drone frame structure, including an upper connecting plate 3, a middle connecting plate 4 and a lower connecting plate 5 fixed by a connecting column 2, the upper connecting plate 3, the middle connecting plate 4 and the lower connecting plate 5 are all rectangular structures, and a circular arc surface design is made around them to reduce wind resistance, the arm 1 is staggered and clamped between the middle connecting plate 4 and the lower connecting plate 5 through a first clip 7 and a second clip 8. The first clip 7 is a clamping block, and the upper and lower ends of the clamping block are provided with protrusions, respectively, for clamping the middle connecting plate 4 and the lower connecting plate 5, the second clip 8 is a long strip structure, and the base of the second clip 8 is provided with two protrusions for clamping into the third positioning hole 53 provided on the lower connecting plate 5, and the upper end of the second clip 8 is also provided with a protrusion for clamping the middle connecting plate, and the clamping part of the arm 1 is a stepped structure.

[0024] One end of the first clip 7 is embedded in the second positioning hole 43 and fixed to the middle connecting plate 4, and the other end is embedded in the fourth positioning hole 53 and fixed to the lower connecting plate 5. One end of the second clip 8 is embedded in the first positioning hole 41 and fixed to the middle connecting plate 4, and the other end is embedded in the third positioning hole 52 and fixed to the lower connecting plate 5. The arm 1 is fixed at the joint by a fastener 6. One end of the arm 1 is provided with a rotor fixing hole 11 and a rotor mounting hole 12. The rotor fixing hole 11 is mainly used to fix the rotor to ensure that the rotor can remain stable during the flight of the drone and will not loosen due to vibration or wind. The rotor mounting hole 12 is used for the installation and positioning of the rotor, fixing the rotor to the arm 1. The design of the drone frame structure consists of several key parts: the upper connecting plate 3, the middle connecting plate 4, the lower connecting plate 5 and the connecting column 2. These components are tightly fixed together by the connecting column 2 to form the main frame of the drone.

[0025] It should be noted that the arms 1 are an integral component of the frame. They are interlocked with the middle connecting plate 4 and the lower connecting plate 5 via first and second clips 7 and 8. The drone frame is equipped with four arms 1, two of which are clipped onto one end of the frame, and the other two onto the other end. This interlocking design securely fastens the arms 1 to the frame. The clips on the arms 1 are designed as a stepped structure, which enhances stability and helps reduce air resistance.

[0026] It should be noted that one end of the first clip 7 engages with the second positioning hole 43 of the middle connecting plate 4, and the other end engages with the fourth positioning hole 53 of the lower connecting plate 5. The first clip 7 is securely fixed between the two connecting plates, providing additional support for the arm 1. Similarly, one end of the second clip 8 engages with the first positioning hole 41 of the middle connecting plate 4, and the other end engages with the third positioning hole 52 of the lower connecting plate 5. This design allows the second clip 8 to provide stable fixation for the arm 1 while increasing the overall structural rigidity.

[0027] It should also be noted that in order to further enhance the stability of the arm 1, the clamping part of the arm 1 is also fixed by a fastener 6. This fastener 6 can be a bolt, screw or other type of fastening element, and its function is to maintain its position without displacement when the arm 1 is subjected to external force. At one end of the arm 1, a rotor fixing hole 11 and a rotor mounting hole 12 are specially designed. The design of these two holes is very critical because they are the basis for the installation of the rotor. The rotor fixing hole 11 is used to fix the rotor to ensure that it will not loosen during flight, while the rotor mounting hole 12 provides precise positioning for the installation of the rotor, ensuring that the rotor can be installed correctly and work efficiently.

[0028] Working Principle of this embodiment: Structural Composition and Fixing Method: The drone frame structure consists of an upper connecting plate 3, a middle connecting plate 4, a lower connecting plate 5, and connecting columns 2. These components are tightly fixed together by connecting columns 2 to form the main frame of the drone. The three connecting plates are all rectangular in shape, with rounded surfaces on all sides to reduce air resistance and improve flight efficiency.

[0029] Arm Attachment: Arm 1 is alternately attached to the middle connecting plate 4 and lower connecting plate 5 via first and second latches 7 and 8. This design allows arm 1 to be securely fixed to the frame while maintaining structural flexibility. The stepped design of the arm 1's attachment point enhances stability and potentially reduces air resistance.

[0030] Buckle Structure and Function: The first and second buckles 7 and 8, respectively, engage in different positioning holes on the middle and lower connecting plates, providing additional support and stable fixation for the arm 1. The design of the first and second buckles 7 and 8 ensures a secure fixation of the arm 1 between the two connecting plates, increasing the rigidity of the overall structure.

[0031] Strengthening effect of fasteners: In order to further enhance the stability of the arm 1, the clamping joints of the arm 1 are also fixed by fasteners 6, which can be bolts, screws or other types of fastening elements to ensure that the position of the arm 1 does not shift when subjected to external force.

[0032] Rotor Securing and Installation: One end of arm 1 is designed with rotor securing hole 11 and rotor mounting hole 12. These two holes are essential for rotor installation. Rotor securing hole 11 secures the rotor, preventing it from loosening due to vibration or wind during flight. Rotor mounting hole 12 is used for installing and positioning the rotor, ensuring it is correctly positioned on the arm, thereby ensuring the drone's balance and controllability.

[0033] In summary, the design of this drone frame structure focuses on providing stable support, enhancing structural rigidity, reducing air resistance, and ensuring the drone's flight balance and maneuverability through the rotor mounting holes. This design gives the drone greater stability and efficiency during flight.

[0034] Example 2: Reference Figures 1 to 7 The main structure of this embodiment is similar to that of embodiment 1, but a number of weight-reducing holes are provided on the upper connecting plate 3, the middle connecting plate 4, and the lower connecting plate 5 for weight reduction and controlling the overall balance of the UAV frame structure. A UAV frame structure is mainly composed of core components such as the upper connecting plate 3, the middle connecting plate 4, the lower connecting plate 5 and the connecting column 2. These parts are tightly combined through the connecting column 2 to form the main structure of the UAV. The arm 1 is staggeredly connected with the middle connecting plate 4 and the lower connecting plate 5 through the first clip 7 and the second clip 8 to ensure the stable installation of the arm 1. The connecting part of the arm 1 adopts a stepped design, with one end of the first clip fitting into the second positioning hole 43 on the middle connecting plate 4, and the other end fitting into the fourth positioning hole 53 on the lower connecting plate 5. This structure ensures that the first clip 7 can firmly connect the two plates, providing additional fixed support for the arm 1.

[0035] It should be noted that one end of the second clip 8 is engaged with the first positioning hole 41 on the middle connecting plate 4, and the other end is engaged with the third positioning hole 52 on the lower connecting plate 5. This structure allows the second clip 8 to provide stable fixation for the arm 1, while enhancing the rigidity of the entire structure. In order to further improve the stability of the arm 1, the connection part of the arm 1 is reinforced by a fastener 6. The fastener 6 can be a bolt, screw or other fastening element, and its purpose is to maintain the stability of its position and prevent displacement when the arm 1 is subjected to external force. A rotor fixing hole 11 and a rotor mounting hole 12 are set at one end of the arm 1. These two holes are crucial for the installation of the rotor. The rotor fixing hole 11 is used to fasten the rotor to ensure that it will not fall off due to vibration or wind during flight. The rotor mounting hole 12 provides accurate positioning for the installation of the rotor, ensuring that the rotor can be installed correctly and efficiently.

[0036] It should be noted that in this drone frame structure, the upper connecting plate 3, middle connecting plate 4, and lower connecting plate 5 are designed with specific fixing holes and weight-reducing holes to achieve structural stability and lightweight. The upper connecting plate 3 is surrounded by several upper plate fixing holes 33, which are used to install other components, such as motors and sensors, to ensure they are firmly fixed to the frame. In addition, the upper connecting plate 3 has a first weight-reducing hole 31 and a fourth weight-reducing hole 35 symmetrically distributed on both sides. The first weight-reducing hole 31 is a parallelogram structure. Two first weight-reducing holes 31 are provided at one end of the upper connecting plate 3. The first weight-reducing holes 31 are symmetrically arranged relative to the axis. This symmetrical design helps to maintain the balance of the frame while reducing weight. The fourth weight-reducing hole 35 is a larger trapezoidal shape, with the longer side of the trapezoid close to the outside of the upper connecting plate 3 and the shorter side of the trapezoid close to the central axis of the upper connecting plate 3. The upper connecting plate 3 also has a second weight-reducing hole 32 and a third weight-reducing hole 34 at the central axis. The second weight-reducing hole 32 is a diamond shape and is arranged in the center of the upper connecting hole 3. The fourth weight-reducing hole 34 is a triangle and is arranged at the front end of the upper connecting plate 3. The position of these weight-reducing holes helps to reduce the rotational inertia of the frame, making the control of the drone more sensitive and precise.

[0037] It should also be noted that the design of the middle connecting plate 4 also takes into account the needs of fixation and weight reduction. It is provided with a number of middle plate fixing holes 42 around it. These fixing holes are used to connect the machine arm or other structural components to ensure the rigidity and stability of the entire frame. The middle connecting plate 4 is also provided with two symmetrical triangular weight reduction holes 44. The lower connecting plate 5 is provided with a number of lower plate fixing holes 51 around it. These fixing holes are used to connect the machine arm or other bottom components to ensure the structural stability of the entire frame. A circular weight reduction hole 54 is provided in the center of the lower connecting plate 5. The position of this weight reduction hole helps to reduce the weight of the frame without affecting its structural strength, thereby improving the flight performance of the drone.

[0038] The specific working principle of this embodiment: Design of weight-reducing holes: Weight-reducing holes are designed on the upper connecting plate 3, the middle connecting plate 4 and the lower connecting plate 5. These holes reduce the amount of material used, thereby reducing the weight of the frame.

[0039] Symmetrical Distribution: The symmetrical distribution of the weight-reducing holes (first weight-reducing hole 31 and fourth weight-reducing hole 35) on the upper connecting plate 3 helps maintain the balance of the frame. This symmetrical design reduces weight while maintaining the center of gravity of the frame, preventing flight instability caused by a shifted center of gravity.

[0040] The first weight-reducing hole 31 is a parallelogram, the fourth weight-reducing hole 35 is a trapezoid, the second weight-reducing hole 32 is a rhombus, and the third weight-reducing hole 34 is a triangle. These weight-reducing holes are designed with specific shapes to reduce material while taking into account structural strength and airflow dynamics.

[0041] Location of weight-reducing holes: The locations of weight-reducing holes are selected in places that do not affect the structural strength of the main load-bearing areas of the rack, so that the rack can maintain sufficient strength and rigidity while reducing weight.

[0042] Reduced moment of inertia: The placement of the weight-reducing holes helps reduce the frame's moment of inertia, which is crucial for improving a drone's maneuverability. Lower moment of inertia means the drone requires less force to change direction, improving maneuverability.

[0043] Structural strength: The circular weight-reducing hole 54 in the center of the lower connecting plate 5 is designed at a position that does not sacrifice structural strength, so that the weight can be reduced without affecting the load-bearing capacity of the frame.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A UAV frame structure, characterized in that: The machine arm (1) comprises an upper connecting plate (3), a middle connecting plate (4), a lower connecting plate (5), and a plurality of machine arms (1) fixed via connecting columns (2); the machine arms (1) are alternately clamped between the middle connecting plate (4) and the lower connecting plate (5) via a first clamp (7) and a second clamp (8).

2. The UAV frame structure according to claim 1, characterized in that: One end of the first buckle (7) is embedded in the second positioning hole (43) and fixed to the middle connecting plate (4), and the other end is embedded in the fourth positioning hole (53) and fixed to the lower connecting plate (5).

3. The UAV frame structure according to claim 1 or 2, characterized in that: One end of the second buckle (8) is embedded in the first positioning hole (41) and fixed to the middle connecting plate (4), and the other end is embedded in the third positioning hole (52) and fixed to the lower connecting plate (5).

4. The UAV frame structure according to claim 1 or 2, characterized in that: The clamping portion of the machine arm (1) is in a stepped structure, and the clamping portion of the machine arm (1) is fixed by a fastener (6).

5. The UAV frame structure according to claim 4, characterized in that: One end of the machine arm (1) is provided with a rotor fixing hole (11) and a rotor mounting hole (12).

6. The UAV frame structure according to claim 1 or 5, characterized in that: The upper connecting plate (3) is provided with a plurality of upper plate fixing holes (33) around its periphery, the first weight-reducing hole (31) and the fourth weight-reducing hole (35) are symmetrically distributed on both sides of the upper connecting plate (3), and the second weight-reducing hole (32) and the third weight-reducing hole (34) are arranged at the central axis position of the upper connecting plate (3).

7. The UAV frame structure according to claim 1, characterized in that: A plurality of middle plate fixing holes (42) are provided around the middle connecting plate (4), and two symmetrical triangular weight-reducing holes (44) are provided on the middle connecting plate (4).

8. The UAV frame structure according to claim 1, characterized in that: A plurality of lower plate fixing holes (51) are provided around the lower connecting plate (5), and a circular weight-reducing hole (54) is provided at the center of the lower connecting plate (5).

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