Arm of unmanned rotorcraft

Abstract

The utility model discloses a rotor unmanned aerial vehicle arm which comprises a vehicle body fixing seat, a first connecting arm is fixedly connected to the inner wall of the vehicle body fixing seat, a second connecting arm is arranged on the side, away from the vehicle body fixing seat, of the first connecting arm, and a motor fixing seat is fixedly connected to the end, away from the first connecting arm, of the second connecting arm. The end, away from the machine body fixing base, of the first connecting arm is fixedly connected with a first connecting base, the end, away from the motor fixing base, of the second connecting arm is fixedly connected with a second connecting base, and the second connecting base is rotationally connected with the first connecting base. The utility model relates to the technical field of rotor unmanned aerial vehicles, and solves the problems that in the prior art, rotor motors of the rotor unmanned aerial vehicles are fixed to a vehicle body through vehicle arms, so that the whole size of the rotor unmanned aerial vehicles is large, the unmanned aerial vehicles are inconvenient to transport and store, and rotors of the unmanned aerial vehicles are prone to being collided; and the safety of the unmanned aerial vehicle during transportation and storage is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary-wing unmanned aerial vehicles, and particularly to an arm of a rotary-wing unmanned aerial vehicle. Background Technique

[0002] A rotary-wing unmanned aerial vehicle is a special unmanned helicopter with three or more rotor shafts. It drives the rotors by the rotation of the motors on each shaft, thereby generating lift thrust. By changing the relative rotational speeds between different rotors, the magnitude of the single-axis propulsion force can be changed, so as to control the flight trajectory of the aircraft. In the prior art, the rotor motors of the rotary-wing unmanned aerial vehicle are fixed to the fuselage through the arms, which makes the overall volume of the rotary-wing unmanned aerial vehicle relatively large, causing inconvenience for the transportation and storage of the unmanned aerial vehicle, and it is easy to bump the rotors of the unmanned aerial vehicle, affecting the safety of the unmanned aerial vehicle during transportation and storage. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides an arm of a rotary-wing unmanned aerial vehicle, which solves the problems in the prior art that the rotor motors of the rotary-wing unmanned aerial vehicle are fixed to the fuselage through the arms, making the overall volume of the rotary-wing unmanned aerial vehicle relatively large, causing inconvenience for the transportation and storage of the unmanned aerial vehicle, and it is easy to bump the rotors of the unmanned aerial vehicle, affecting the safety of the unmanned aerial vehicle during transportation and storage.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: an arm of a rotary-wing unmanned aerial vehicle, including a fuselage fixing seat, the inner wall of the fuselage fixing seat is fixedly connected with a first connecting arm, a second connecting arm is arranged on the side of the first connecting arm away from the fuselage fixing seat, a motor fixing seat is fixedly connected to the end of the second connecting arm away from the first connecting arm, a first connecting seat is fixedly connected to the end of the first connecting arm away from the fuselage fixing seat, a second connecting seat is fixedly connected to the end of the second connecting arm away from the motor fixing seat, the second connecting seat is rotatably connected with the first connecting seat, the outer walls of the bottoms of the first connecting seat and the second connecting seat are respectively fixedly connected with connecting plates, semi-circular blocks are correspondingly arranged at the bottoms of the sides of the two connecting plates close to each other, semi-circular grooves are arranged on the sides of the semi-circular blocks close to each other, a first fixing block is fixedly connected to the inside of the first connecting seat, a screw rod is threadedly connected to the bottom of the first fixing block, the screw rod is in fit connection with the semi-circular groove, a limiting knob is arranged at one end of the bottom of the screw rod, a limiting groove is arranged at the top of the limiting knob, and the limiting groove is in fit connection with the semi-circular block.

[0005] Preferably, a pressing convex block is arranged on the outer wall of the first fixing block on the side close to the second connecting arm, a second fixing block is fixedly connected to the inside of the second connecting seat, a pressing groove is opened on the outer wall of the second fixing block on the side close to the first connecting arm, and the pressing convex block is in fit connection with the pressing groove.

[0006] Preferably, fastening adjustment grooves are formed at the tops of the sides of the first connecting seat and the second connecting seat that are away from each other. Fastening protrusions are provided on both sides of the fastening adjustment grooves of the first connecting seat and the second connecting seat, and fastening bolts are provided on both sides of the fastening protrusions.

[0007] Preferably, a lever is provided on one side of the outer wall of the limit knob. Anti-slip grooves are equidistantly formed on the outer wall of the limit knob, and an internal hexagonal adjustment hole is provided at the bottom of the limit knob.

[0008] Preferably, a folding buckle is provided at the top of the outer wall of the first connecting arm, and the folding buckle is cooperatively connected with the second connecting arm.

[0009] The utility model provides an arm of a rotary-wing unmanned aerial vehicle, which has the following beneficial effects: for the arm of the rotary-wing unmanned aerial vehicle, through the cooperation among the fuselage fixing seat, the first connecting arm, the second connecting arm, the motor fixing seat, the first connecting seat, the second connecting seat, the connecting plate, the semi-circular block, the semi-circular groove, the first fixing block, the screw rod, the limit knob and the limit groove, a folding arm structure is adopted. After the arm of the rotary-wing unmanned aerial vehicle is unfolded, the first connecting seat and the second connecting seat are attached to each other. By rotating and tightening the limit knob, the limit knob can fix the semi-circular block, so as to fix the first connecting seat and the second connecting seat, and further make the unfolded arm obtain stable support and locking. When the rotary-wing unmanned aerial vehicle is transported or stored, by releasing the limit of the limit knob on the semi-circular block, the second connecting arm can drive the rotary-wing drive motor to rotate upward, so as to fold the arm, which can reduce the overall volume of the unmanned aerial vehicle, improve the convenience of transporting and storing the unmanned aerial vehicle, and reduce the probability of the rotors of the unmanned aerial vehicle colliding, which helps to improve the convenience and safety of transporting and storing the unmanned aerial vehicle.

[0010] Through the cooperation among the first connecting seat, the second connecting seat, the first fixing block, the abutting convex block, the second fixing block and the abutting groove, after the arm of the rotary-wing unmanned aerial vehicle is unfolded, the first connecting seat and the second connecting seat are attached to each other, and the abutting convex block of the first fixing block is clamped into the interior of the abutting groove of the second fixing block to form a limit, which can improve the connection stability between the first connecting seat and the second connecting seat, and further ensure the stability and safety after the arm of the rotary-wing unmanned aerial vehicle is unfolded, which helps to improve the durability and reliability of the arm connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the utility model;

[0012] Figure 2 is a schematic external view of the utility model;

[0013] Figure 3 is Figure 2 a schematic external view of the first connecting arm, the first connecting seat and the limit knob in

[0014] Figure 4 For Figure 2 the external view schematic diagram of the second connecting arm, the second connecting seat and the second fixing block in

[0015] Figure 5 For Figure 2 the external view schematic diagram of the screw rod, the limit knob and the lever in

[0016] Figure 6 For Figure 1 the partial enlarged view of area A in

[0017] In the figure: 1, the fuselage fixing seat; 2, the first connecting arm; 3, the second connecting arm; 4, the motor fixing seat; 5, the first connecting seat; 6, the second connecting seat; 7, the connecting plate; 8, the semi-circular block; 9, the semi-circular groove; 10, the first fixing block; 11, the screw rod; 12, the limit knob; 13, the limit groove; 14, the abutting convex block; 15, the second fixing block; 16, the abutting groove; 17, the fastening adjustment groove; 18, the fastening protrusion; 19, the fastening bolt; 20, the lever; 21, the anti-slip groove; 22, the hexagon socket adjusting hole; 23, the folding buckle. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] In the prior art, the rotor motor of the rotor unmanned aerial vehicle is fixed to the fuselage through the arm, making the overall volume of the rotor unmanned aerial vehicle relatively large, causing inconvenience to the transportation and storage of the unmanned aerial vehicle, and easily causing bumps to the rotors of the unmanned aerial vehicle, affecting the safety of the unmanned aerial vehicle during transportation and storage.

[0020] In view of this, the present utility model provides an arm of a rotary-wing unmanned aerial vehicle. Through the cooperation among a fuselage fixing seat, a first connecting arm, a second connecting arm, a motor fixing seat, a first connecting seat, a second connecting seat, a connecting plate, a semi-circular block, a semi-circular groove, a first fixing block, a screw rod, a limit knob and a limit groove, a folding arm structure is adopted. After the arm of the rotary-wing unmanned aerial vehicle is unfolded, the first connecting seat and the second connecting seat are attached to each other. By rotating and tightening the limit knob, the limit knob fixes the semi-circular block, thereby fixing the first connecting seat and the second connecting seat, and further enabling the unfolded arm to obtain stable support and locking. When the rotary-wing unmanned aerial vehicle is transported or stored, by releasing the limit of the semi-circular block by the limit knob, the second connecting arm drives the rotary-wing drive motor to rotate upward, thereby folding the arm, reducing the overall volume of the unmanned aerial vehicle, improving the convenience of transporting and storing the unmanned aerial vehicle, and reducing the probability of the rotors of the unmanned aerial vehicle colliding, and improving the safety of the unmanned aerial vehicle during transportation and storage.

[0021] Those skilled in the art should connect all the electrical components in this case to their adapted power supplies through wires, and should select appropriate controllers and encoders according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0022] From Figure 1-6 As can be seen, an arm of a rotary-wing unmanned aerial vehicle includes a fuselage fixing seat 1, which is used to fix the arm to the fuselage of the rotary-wing unmanned aerial vehicle. The inner wall of the fuselage fixing seat 1 is fixedly connected with a first connecting arm 2. One side of the first connecting arm 2 away from the fuselage fixing seat 1 is provided with a second connecting arm 3. One end of the second connecting arm 3 away from the first connecting arm 2 is fixedly connected with a motor fixing seat 4, which is used to fix the rotary-wing drive motor at the end of the arm. One end of the first connecting arm 2 away from the fuselage fixing seat 1 is fixedly connected with a first connecting seat 5. One end of the second connecting arm 3 away from the motor fixing seat 4 is fixedly connected with a second connecting seat 6. The second connecting seat 6 is rotatably connected with the first connecting seat 5. The outer walls of the bottoms of the first connecting seat 5 and the second connecting seat 6 are respectively fixedly connected with connecting plates 7. The bottoms of the sides of the two connecting plates 7 close to each other are correspondingly provided with semi-circular blocks 8. The sides of the semi-circular blocks 8 close to each other are provided with semi-circular grooves 9. The inside of the first connecting seat 5 is fixedly connected with a first fixing block 10. The bottom of the first fixing block 10 is threadedly connected with a screw rod 11. The screw rod 11 is in cooperation with the semi-circular groove 9. One end of the bottom of the screw rod 11 is provided with a limit knob 12. The top of the limit knob 12 is provided with a limit groove 13. The limit groove 13 is in cooperation with the semi-circular block 8.

[0023] In the specific implementation process, it is particularly worth noting that the fuselage fixing seat 1 is used to fix the arm and the fuselage of the rotor UAV. The motor fixing seat 4 is used to fix the rotor drive motor at the end of the arm. Through the cooperation among the first connecting arm 2, the second connecting arm 3, the first connecting seat 5 and the second connecting seat 6, the arm structure of the rotor UAV is formed. By fixing it to the fuselage and the rotor drive motor, the installation and fixation of the rotor drive motor and the fuselage are realized. And through the first connecting seat 5 and the second connecting seat 6, the second connecting arm 3 can drive the rotor drive motor to rotate upward, thereby folding the arm and reducing the overall volume of the UAV. Through the cooperation among the first connecting seat 5, the second connecting seat 6, the connecting plate 7, the semi-circular block 8, the semi-circular groove 9, the first fixing block 10, the screw 11, the limit knob 12 and the limit groove 13, after the arm of the rotor UAV is unfolded, the first connecting seat 5 and the second connecting seat 6 are attached to each other, so that the two semi-circular blocks 8 are tightly attached to each other to form a cylindrical protrusion, and the two semi-circular grooves 9 surround the screw 11. Rotate the limit knob 12 to screw the screw 11 into the inside of the first fixing block 10 and tighten it, so that the two semi-circular blocks 8 are clamped into the inside of the limit groove 13 to form a limit, realizing the fixation of the first connecting seat 5 and the second connecting seat 6, and further enabling the unfolded arm to obtain stable support and locking. Through the cooperation among the fuselage fixing seat 1, the first connecting arm 2, the second connecting arm 3, the motor fixing seat 4, the first connecting seat 5, the second connecting seat 6, the connecting plate 7, the semi-circular block 8, the semi-circular groove 9, the first fixing block 10, the screw 11, the limit knob 12 and the limit groove 13, adopting a folding arm structure, after the arm of the rotor UAV is unfolded, the first connecting seat 5 and the second connecting seat 6 are attached to each other. By rotating and tightening the limit knob 12, the limit knob 12 realizes the fixation of the first connecting seat 5 and the second connecting seat 6 by limiting and fixing the semi-circular block 8, and further enables the unfolded arm to obtain stable support and locking. When the rotor UAV is transported or stored, by releasing the limit of the limit knob 12 on the semi-circular block 8, the second connecting arm 3 drives the rotor drive motor to rotate upward, thereby folding the arm and reducing the overall volume of the UAV, improving the convenience of UAV transportation and storage, and reducing the probability of the UAV rotor being knocked, improving the safety of the UAV during transportation and storage;

[0024] Further, a tightening convex block 14 is arranged on the outer wall of the first fixing block 10 close to the second connecting arm 3. A second fixing block 15 is fixedly connected inside the second connecting seat 6. A tightening groove 16 is opened on the outer wall of the second fixing block 15 close to the first connecting arm 2. The tightening convex block 14 is in fit connection with the tightening groove 16;

[0025] In the specific implementation process, it is particularly worth noting that through the cooperation among the first connecting seat 5, the second connecting seat 6, the first fixing block 10, the pressing convex block 14, the second fixing block 15 and the pressing groove 16, after the arm of the rotary-wing UAV is unfolded, the first connecting seat 5 and the second connecting seat 6 are attached to each other, and the pressing convex block 14 of the first fixing block 10 is snapped into the inside of the pressing groove 16 of the second fixing block 15 to form a limit, improving the connection stability between the first connecting seat 5 and the second connecting seat 6, ensuring the firmness and safety of the arm of the rotary-wing UAV after unfolding, and further enhancing the durability and reliability of the connection structure;

[0026] Furthermore, on the top of the sides where the first connecting seat 5 and the second connecting seat 6 are away from each other, fastening adjustment grooves 17 are provided. On both sides of the first connecting seat 5 and the second connecting seat 6 located in the fastening adjustment grooves 17, fastening protrusions 18 are provided, and fastening bolts 19 are provided on both sides of the fastening protrusions 18;

[0027] In the specific implementation process, it is particularly worth noting that through the cooperation among the first connecting arm 2, the second connecting arm 3, the first connecting seat 5, the second connecting seat 6, the fastening adjustment grooves 17, the fastening protrusions 18 and the fastening bolts 19, after the first connecting arm 2 and the second connecting arm 3 are respectively inserted into the first connecting seat 5 and the second connecting seat 6, by tightening the fastening bolts 19, the fastening protrusions 18 move towards the direction of approaching each other, and then the first connecting seat 5 and the second connecting seat 6 respectively fix the first connecting arm 2 and the second connecting arm 3;

[0028] Furthermore, on one side of the outer wall of the limit knob 12, a lever 20 is provided. Anti-slip grooves 21 are equidistantly provided on the outer wall of the limit knob 12, and an internal hexagonal adjustment hole 22 is provided at the bottom of the limit knob 12;

[0029] In the specific implementation process, it is particularly worth noting that through the cooperation among the limit knob 12, the lever 20, the anti-slip grooves 21 and the internal hexagonal adjustment hole 22, by the lever 20 or by inserting a hexagonal wrench into the internal hexagonal adjustment hole 22, the limit knob 12 can be rotated in various ways, improving the rotation convenience of the limit knob 12;

[0030] Furthermore, on the top of the outer wall of the first connecting arm 2, a folding buckle 23 is provided. The folding buckle 23 is used to make the second connecting arm 3 snap into the top of the folding buckle 23 when the arm is folded, improving the stability after the arm is folded, and the folding buckle 23 is connected in cooperation with the second connecting arm 3;

[0031] In the specific implementation process, it is particularly worth noting that the folding buckle 23 is used to make the second connecting arm 3 snap into the top of the folding buckle 23 when the arm is folded, improving the stability after the arm is folded.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An arm of a rotary-wing unmanned aerial vehicle, comprising a fuselage fixing seat (1), characterized in that: The inner wall of the fuselage fixing seat (1) is fixedly connected with a first connecting arm (2). A second connecting arm (3) is arranged on the side of the first connecting arm (2) away from the fuselage fixing seat (1). One end of the second connecting arm (3) away from the first connecting arm (2) is fixedly connected with a motor fixing seat (4). One end of the first connecting arm (2) away from the fuselage fixing seat (1) is fixedly connected with a first connecting seat (5). One end of the second connecting arm (3) away from the motor fixing seat (4) is fixedly connected with a second connecting seat (6). The second connecting seat (6) is rotationally connected with the first connecting seat (5). The outer walls of the bottoms of the first connecting seat (5) and the second connecting seat (6) are respectively fixedly connected with connecting plates (7). Semi-circular blocks (8) are correspondingly arranged at the bottoms of the sides of the two connecting plates (7) close to each other. A semi-circular groove (9) is arranged on the side of the semi-circular blocks (8) close to each other. A first fixing block (10) is fixedly connected inside the first connecting seat (5). A screw rod (11) is threadedly connected to the bottom of the first fixing block (10). The screw rod (11) is in fit connection with the semi-circular groove (9). One end of the bottom of the screw rod (11) is provided with a limit knob (12). A limit groove (13) is arranged on the top of the limit knob (12). The limit groove (13) is in fit connection with the semi-circular block (8).

2. The arm of a rotor UAV according to claim 1, characterized in that: A pressing convex block (14) is arranged on the outer wall of the first fixing block (10) on the side close to the second connecting arm (3). A second fixing block (15) is fixedly connected inside the second connecting seat (6). A pressing groove (16) is formed on the outer wall of the second fixing block (15) on the side close to the first connecting arm (2). The pressing convex block (14) is in fit connection with the pressing groove (16).

3. The arm of a rotor UAV according to claim 1, characterized in that: Tightening adjustment grooves (1) are formed at the tops of the sides of the first connecting seat (5) and the second connecting seat (6) away from each other. Tightening protrusions (18) are arranged on both sides of the first connecting seat (5) and the second connecting seat (6) located on both sides of the tightening adjustment groove (17). Tightening bolts (19) are arranged on both sides of the tightening protrusions (18).

4. The arm of a rotary-wing unmanned aerial vehicle according to claim 1, characterized in that: A lever (20) is arranged on one side of the outer wall of the limit knob (12). Anti-slip grooves (21) are equidistantly formed on the outer wall of the limit knob (12). An internal hexagonal adjustment hole (22) is arranged at the bottom of the limit knob (12).

5. The arm of a rotor UAV according to claim 1, characterized in that: A folding buckle (23) is arranged on the top of the outer wall of the first connecting arm (2). The folding buckle (23) is in fit connection with the second connecting arm (3).

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