Vertical folding mechanism for rotor unmanned aerial vehicle paddle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a vertical folding mechanism for rotor unmanned aerial vehicle blades, which comprises a motor, a supporting mechanism is arranged at the output end of the motor, the blades are arranged on the left side and the right side above the supporting mechanism, and bolts movably penetrate through the interiors of the ends, close to the supporting mechanism, of the blades. A supporting plate is installed at the position, located above the paddle, of the outer portion of the bolt, a ratchet wheel is installed at the position, located above the supporting plate, of the outer portion of the bolt, and a positioning mechanism is arranged at the position, located on the front side of the bolt, of the upper surface of the paddle; the paddles are installed on the supporting seat through the bolts, the paddles can be folded to be in a vertical state by rotating the paddles upwards, the occupied space in the horizontal direction is reduced, the storage requirement of a narrow space is met, a pawl in the positioning mechanism is attached to a ratchet wheel, the ratchet wheel cannot rotate anticlockwise, and therefore the bolts cannot rotate anticlockwise, and operation is convenient. The phenomenon that the bolts are loosened is avoided, and the firmness of the paddle after installation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a vertical folding mechanism for the blades of a rotary-wing unmanned aerial vehicle. Background Technique

[0002] With the development of multi-rotor unmanned aerial vehicle technology, its applications in the military and industrial fields are becoming more and more extensive, and good practical use effects have been obtained in many aspects such as anti-terrorism investigation, intelligence collection, power line inspection, and disaster detection. However, small load and insufficient flight time greatly limit the further application of multi-rotor unmanned aerial vehicles. To overcome this problem, the use of rotary-wing unmanned aerial vehicle cabins and unmanned vehicles in remote areas has achieved good results, and the use of rotary-wing unmanned aerial vehicle cabins and unmanned vehicles can realize an unattended working mode;

[0003] Existing multi-rotor unmanned aerial vehicles mostly adopt quick-release blades or folding blades, and the folding blades are mostly in-plane folding blades. Multi-rotor unmanned aerial vehicles using this structure are difficult to meet the use requirements of field cabins or unmanned vehicles. Due to the limitations of their own conditions, the takeoff and landing platforms of field cabins or unmanned vehicles are relatively small, and the blades occupy a large space in the plane. Therefore, if the landing position of the unmanned aerial vehicle deviates slightly, it is very easy for the cabin door to collide with the blades during the closing process, resulting in blade damage.

[0004] Chinese Patent discloses a vertical folding mechanism for the blades of a rotary-wing unmanned aerial vehicle (authorization announcement number CN212473894U). The upper end of the rotating seat of this patented technology is installed with a blade, and the lower end of the rotating seat is installed on the blade seat through bolts, so that the rotating seat can drive the blade to rotate upward along the vertical direction with the bolt as the axis, thereby realizing the vertical folding function. The multi-rotor unmanned aerial vehicle using this mechanism can meet the takeoff, landing and use requirements of field cabin platforms and unmanned vehicle platforms with narrow spaces, and expands the use scope and field of rotary-wing unmanned aerial vehicles;

[0005] However, it has certain drawbacks: the blade is sleeved outside the upper end of the rotating seat, and then the blade is fixed by screwing a nut on the upper end of the rotating seat. When the unmanned aerial vehicle is in use, rotation will generate vibration, and the vibration is transmitted to the nut. Over time, the nut will rotate, resulting in the blade becoming loose, which will in turn affect the normal flight of the unmanned aerial vehicle and even cause damage to the unmanned aerial vehicle. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a vertical folding mechanism for the blades of a rotary-wing unmanned aerial vehicle to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A vertical folding mechanism for the blades of a rotary-wing unmanned aerial vehicle, including a motor, a support mechanism is provided at the output end of the motor, blades are installed on both the left and right sides above the support mechanism, a bolt penetrates through the inner end of the blade close to the support mechanism, a support plate is installed above the blade on the outer side of the bolt, a ratchet wheel is installed above the support plate on the outer side of the bolt, and a positioning mechanism is provided on the front side of the bolt on the upper surface of the blade.

[0009] As a further solution of the present utility model: The support mechanism includes a blade base, support holes are opened at both the left and right ends inside the blade base, a support seat is installed inside the support holes, support rods are rotatably connected to both the front and rear surfaces of the support seat, and a nut is embedded in the upper surface of the support seat.

[0010] As a further solution of the present utility model: The positioning mechanism includes a pawl, a positioning rod penetrates through and is rotatably connected to the right end of the pawl, a positioning block is installed on the front surface of the pawl, a spring is movably attached to the outside of the positioning block on the front surface of the pawl, and a positioning plate is installed at the front end of the spring.

[0011] As a further solution of the present utility model: The output end of the motor is connected to the lower surface of the blade base, and one end of the support rod is installed on one side surface inside the support hole.

[0012] As a further solution of the present utility model: The blade is installed on the upper surface of the support seat, and the lower end of the bolt is threadedly connected to the inside of the nut.

[0013] As a further solution of the present utility model: The pawl is attached to the ratchet wheel, and the lower ends of both the positioning rod and the positioning plate are installed on the upper surface of the blade.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. In the present utility model, the blade is installed on the support seat through a bolt. By rotating the blade upward, it can be folded into a vertical state, reducing the occupied space in the horizontal direction and meeting the storage requirements of narrow spaces, such as the drone cabin platform and takeoff and landing platform in the wild.

[0016] 2. The present utility model is provided with a positioning mechanism. In the positioning mechanism, the pawl is attached to the ratchet wheel, making the ratchet wheel unable to rotate counterclockwise, so that the bolt cannot rotate counterclockwise, avoiding the loosening of the bolt and ensuring the firmness of the blade after installation; after pulling the pawl away from the ratchet wheel, the bolt can be rotated counterclockwise, facilitating the disassembly of the blade. Description of the Drawings

[0017] Figure 1Schematic diagram of a vertical folding mechanism for a rotor UAV blade;

[0018] Figure 2 Exploded view of a vertical folding mechanism for a rotor UAV blade;

[0019] Figure 3 Schematic diagram of a support mechanism in a vertical folding mechanism for a rotor UAV blade;

[0020] Figure 4 Schematic diagram of a bolt in a vertical folding mechanism for a rotor UAV blade;

[0021] Figure 5 Schematic diagram of a positioning mechanism in a vertical folding mechanism for a rotor UAV blade.

[0022] In the figure: 1, motor; 2, support mechanism; 3, paddle base; 4, support hole; 5, support seat; 6, support rod; 7, nut; 8, blade; 9, bolt; 10, support plate; 11, ratchet; 12, positioning mechanism; 13, pawl; 14, positioning rod; 15, positioning block; 16, spring; 17, positioning plate. Detailed implementation mode

[0023] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a vertical folding mechanism for a rotor UAV blade includes a motor 1, a support mechanism 2 is arranged at the output end of the motor 1, the support mechanism 2 includes a paddle base 3, the output end of the motor 1 is connected to the lower surface of the paddle base 3, support holes 4 are opened at both the left and right ends inside the paddle base 3, a support seat 5 is installed inside the support holes 4, support rods 6 are rotatably connected to both the front and rear surfaces of the support seat 5, one end of the support rod 6 is installed on one side surface inside the support hole 4, a nut 7 is embedded and connected to the upper surface of the support seat 5, blades 8 are installed on both the upper left and right sides above the support mechanism 2, the blades 8 are installed on the upper surface of the support seat 5, a bolt 9 movably penetrates through one end of the blade 8 close to the support mechanism 2, the lower end of the bolt 9 is threadedly connected inside the nut 7, and a support plate 10 is installed above the blade 8 on the outside of the bolt 9;

[0024] This vertical folding mechanism is used for a rotor UAV;

[0025] The support seat 5 is made of metal material, and the nut 7 is fixed to it by welding;

[0026] Both the bolt 9 and the support plate 10 are made of metal material, and the two are fixed together by welding;

[0027] After the bolt 9 is screwed clockwise into the nut 7, the blade 8 is pressed tightly through the support plate 10, thereby fixing the blade 8;

[0028] The blade 8 can rotate in the upward direction, thus folding into a vertical state, reducing the occupied space in the horizontal direction, and meeting the storage requirements in narrow spaces, such as the UAV cabin platform and takeoff and landing platform in the wild.

[0029] In Figure 1 、 Figures 3 to 5 : Above the support plate 10, a ratchet 11 is installed outside the bolt 9. On the front side of the bolt 9 on the upper surface of the blade 8, a positioning mechanism 12 is provided. The positioning mechanism 12 includes a pawl 13. The pawl 13 fits against the ratchet 11. A positioning rod 14 is rotatably connected through the right end of the pawl 13. And a positioning block 15 is installed on the front surface of the pawl 13. A spring 16 is movably fitted outside the positioning block 15 on the front surface of the pawl 13. The front end of the spring 16 is installed with a positioning plate 17. The lower ends of the positioning rod 14 and the positioning plate 17 are both installed on the upper surface of the blade 8;

[0030] The ratchet 11 is made of metal and is fixed to the outside of the bolt 9 by welding;

[0031] When the blade 8 is made of metal, the positioning plate 17 is also made of metal, and the two are fixed together by welding; when the blade 8 is made of plastic, the positioning plate 17 is also made of plastic, and the two are fixed together by melting or glue, etc.;

[0032] The directions of the pawl 13 and the ratchet 11 are such that when the pawl 13 fits against the ratchet 11, the bolt 9 can rotate clockwise and cannot rotate counterclockwise, thus avoiding the loosening of the bolt 9 and further avoiding the loosening of the blade 8;

[0033] After pulling the pawl 13 away from the ratchet 11, the bolt 9 can be rotated counterclockwise.

[0034] The working principle of the present utility model is: during assembly, place the blade 8 on the upper surface of the support seat 5, then pass the bolt 9 through the blade 8 and screw it into the nut 7. After screwing to a certain extent, pull the pawl 13 away from the bolt 9, and then continue to rotate the bolt 9 with one hand. When the pawl 13 is facing the ratchet 11, release the pawl 13 and continue to rotate the bolt 9. Hold the blade 8 and the paddle seat 3 tightly with the other hand to avoid misalignment between the two until the bolt 9 is tightened so that the support plate 10 presses the blade 8, thereby fixing the blade 8. Install the other blade 8 in the above manner.

[0035] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A vertical folding mechanism for a rotorcraft drone blade, comprising a motor (1), a support mechanism (2) being provided at the output end of the motor (1), blades (8) being installed on both the left and right sides above the support mechanism (2), a bolt (9) being movably penetrated inside one end of the blade (8) close to the support mechanism (2), a support plate (10) being installed outside the bolt (9) and located above the blade (8), characterized in that: A ratchet (11) is installed on the outside of the bolt (9) above the support plate (10), and a positioning mechanism (12) is provided on the upper surface of the blade (8) in front of the bolt (9).

2. The vertical folding mechanism for rotorcraft UAV blades according to claim 1, characterized in that: The support mechanism (2) comprises a paddle seat (3), the left and right ends of the paddle seat (3) are provided with support holes (4), a support seat (5) is installed inside the support hole (4), the front and rear side surfaces of the support seat (5) are rotatably connected to support rods (6), and a nut (7) is embedded and connected to the upper surface of the support seat (5).

3. The vertical folding mechanism for rotorcraft UAV blades according to claim 1, characterized in that: The positioning mechanism (12) comprises a pawl (13), the right end of the pawl (13) is rotatably connected to a positioning rod (14), and a positioning block (15) is installed on the front surface of the pawl (13), and a spring (16) is movably fitted on the front surface of the pawl (13) outside the positioning block (15), and a positioning plate (17) is installed at the front end of the spring (16).

4. The vertical folding mechanism for rotorcraft UAV blades according to claim 2, characterized in that: The output end of the motor (1) is connected to the lower surface of the paddle seat (3), and one end of the support rod (6) is installed on the inner side surface of the support hole (4).

5. The vertical folding mechanism for rotorcraft UAV blades according to claim 2, characterized in that: The blade (8) is mounted on the upper surface of the support seat (5), and the lower end of the bolt (9) is threadedly connected to the inside of the nut (7).

6. The vertical folding mechanism for rotorcraft UAV blades according to claim 3, characterized in that: The pawl (13) is fitted on the ratchet wheel (11), and the lower ends of the positioning rod (14) and the positioning plate (17) are both mounted on the upper surface of the blade (8).

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