Rotor wing unmanned aerial vehicle arm folding structure

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a rotor unmanned aerial vehicle arm folding structure which comprises shells and grooves, the grooves are formed in the shells, dismounting mechanisms are arranged in the shells, the two shells are fixedly connected with a mounting frame through bolts, and the mounting frame is fixedly connected with the mounting frame through bolts. And a mounting hole is formed in the mounting frame, a square block is arranged in the groove in a clearance fit mode, and a folding mechanism is arranged below the square block. The pull ring drives the supporting rod to slide, the supporting rod drives the first circular ring to move, the first circular ring slides on the outer wall of the sliding rod and compresses the spring, the first circular ring drives the pin rod to move, and the pin rod is separated from a clamping groove formed in the second circular ring. The spring drives the first circular ring to slide reversely under the elastic effect, the first circular ring drives the pin rod to move, the pin rod is inserted into a corresponding clamping groove in the second circular ring, and the position of the second circular ring is positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a folding structure of an arm of a rotary wing unmanned aerial vehicle. Background Art

[0002] A rotary-wing unmanned aerial vehicle is a special type of drone with three or more rotor shafts. The rotary-wing unmanned aerial vehicle generates lift by rotating the rotor through the motor on each shaft.

[0003] For example, patent number CN220721419U discloses a folding structure for the arm of a rotary-wing unmanned aerial vehicle, comprising an arm, a docking joint, a shell, a locking piece and an elastic piece; the docking joint is installed at one end of the arm, a rotor is installed at the other end of the arm, the end of the docking joint is rotatably installed in the shell, and the shell is installed on the fuselage of the unmanned aerial vehicle. The above document still has shortcomings. When in use, when the arm is in the storage state, the upper end of the limit column is clamped in the locking groove, the locking piece is pressed, the elastic piece is compressed, and the limit column is folded. The positioning post slides in the limiting groove, and after the upper end of the limiting post is disengaged from the locking groove, the docking head is rotated, and the docking head drives the machine arm to unfold. After the machine arm is unfolded into place, the locking piece is loosened, and the elastic piece is reset to make the locking piece move upward. When the upper end of the limiting post is clamped in the locking groove again, the position of the machine arm is fixed. However, the folding mechanism in the above document only clamps and fixes one side of the machine arm when positioning the position of the machine arm, and the positioning effect when clamping the machine arm is poor. At the same time, when the machine arm is damaged or worn, it is not convenient to disassemble and replace the machine arm. Utility Model Content

[0004] The utility model aims to solve the problem of poor positioning effect when the machine arm is clamped, and proposes a machine arm folding structure for a rotary wing unmanned aerial vehicle.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A folding structure of the arm of a rotary-wing unmanned aerial vehicle is designed, comprising a shell and a groove, wherein the groove is arranged inside the shell, a disassembly mechanism is arranged inside the shell, two shells are fixedly connected to a mounting frame by bolts, a mounting hole is arranged inside the mounting frame, a block is fitted in the internal gap of the groove, and a folding mechanism is arranged below the block.

[0007] Preferably, the folding mechanism includes a sliding rod, the square block is fixedly connected to the end of the sliding rod, a first ring is slidably connected to the outer wall of the sliding rod, a spring is sleeved on the outer wall of the sliding rod, and both ends of the spring are respectively in contact with the first ring and the housing. The first ring is fixedly connected to one end of the support rod, the outer wall of the support rod is slidably connected to the housing, a pull ring is fixedly connected to the other end of the support rod, a pin rod is fixedly connected to the outer wall of the first ring, and the outer wall of the pin rod is engaged with a card slot arranged inside the second ring. The second ring is rotatably connected to the outer wall of the sliding rod.

[0008] Preferably, the disassembly mechanism includes a support plate, both of the housings are in clearance fit with the outer wall of the support plate, both the support plate and the housings are in clearance fit with the outer wall of the screw rod. One end of the screw rod is fixedly connected with a nut, and the outer wall of the other end of the screw rod is threadedly connected with a nut, and the outer wall of the nut is fixedly connected to the housing.

[0009] Preferably, a connecting rod is fixedly connected to the outer wall of the second ring, and a docking head is fixedly connected to the end of the connecting rod.

[0010] Preferably, the docking head is fixedly connected to the end of the machine arm.

[0011] For a rotor UAV arm folding structure proposed by the present utility model, the beneficial effects are as follows: Through the cooperation among the sliding rod, the spring, the first ring, the support rod, the pull ring, the pin rod and the second ring, pulling the pull ring, the pull ring drives the support rod to slide, the support rod drives the first ring to move, the first ring slides on the outer wall of the sliding rod and compresses the spring, the first ring drives the pin rod to move, the pin rod separates from the card slot arranged inside the second ring, rotating the machine arm to the position required for folding the machine arm, releasing the pull ring, the spring drives the first ring to slide reversely under the elastic action, the first ring drives the pin rod to move, the pin rod is inserted into the corresponding card slot inside the second ring, positioning the position of the second ring, and further positioning the position of the machine arm. When it is necessary to extend the machine arm, the operation direction is the same as above, rotating the machine arm to the extended position, and the pin rod cooperates with the second ring to fix the position of the machine arm. When positioning the position of the machine arm, both sides of the machine arm are clamped and fixed, and the positioning effect during clamping of the machine arm is better.

[0012] Through the cooperation among the support plate, the screw rod, the nut and the nut, the nut drives the screw rod to rotate. When the screw rod rotates, the nut separates, and the screw rod is pulled out from the support plate and the housing, separating the two housings from the support plate. Further, the groove is separated from the square block, removing the spring and the first ring from the outer wall of the sliding rod, and removing the second ring, the sliding rod, the connecting rod, the docking head and the machine arm, replacing the machine arm. When the machine arm is damaged or worn, it is convenient to disassemble and replace the machine arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1Schematic structural diagram of the present utility model;

[0014] Figure 2 Cross-sectional structural view of the present utility model;

[0015] Figure 3 Schematic structural diagram of the connection part of the connecting rod, docking head and machine arm in the present utility model;

[0016] Figure 4 Schematic structural diagram of the connection part of the first ring and the pin rod in the present utility model;

[0017] Figure 5 Schematic structural diagram of the connection part of the second ring, connecting rod and docking head in the present utility model;

[0018] Figure 6 Schematic structural diagram of the connection part of the housing, groove and mounting bracket in the present utility model.

[0019] In the figure: 1. Housing, 2. Groove, 3. Folding mechanism, 301. Slide bar, 302. Spring, 303. First ring, 304. Support rod, 305. Pull ring, 306. Pin rod, 307. Second ring, 4. Dismantling mechanism, 401. Support plate, 402. Screw rod, 403. Nut, 404. Nut, 5. Mounting bracket, 6. Mounting hole, 7. Square block, 8. Connecting rod, 9. Docking head, 10. Machine arm. Specific embodiments

[0020] The present utility model will be further described below with reference to the accompanying drawings:

[0021] Refer to the attached Figure 1-6 : In this embodiment, a folding structure of the machine arm of a rotor unmanned aerial vehicle includes a housing 1 and a groove 2. The groove 2 is arranged inside the housing 1. A dismantling mechanism 4 is arranged inside the housing 1. The dismantling mechanism 4 connects and fixes the two sides of the housing 1. Both housing 1 are fixedly connected to the mounting bracket 5 by bolts. The mounting bracket 5 further connects and fixes the two housing 1. Mounting holes 6 are arranged inside the mounting bracket 5. The mounting holes 6 facilitate the installation of the folding mechanism onto the rotor unmanned aerial vehicle. A square block 7 is in clearance fit with the inside of the groove 2. The square block 7 can be separated from the groove 2. A folding mechanism 3 is arranged below the square block 7. The blocking mechanism 3 positions the machine arm.

[0022] The folding mechanism 3 includes a sliding rod 301, a spring 302, a first ring 303, a support rod 304, a pull ring 305, a pin rod 306 and a second ring 307. The square block 7 is fixedly connected to the end of the sliding rod 301. The end of the sliding rod 301 is in contact with the housing 1. The outer wall of the sliding rod 301 is slidably connected with a first ring 303. The first ring 303 slides on the outer wall of the sliding rod 301. A spring 302 is sleeved on the outer wall of the sliding rod 301. The model of the spring 302 is selected according to actual use requirements as long as it meets the working needs. The two ends of the spring 302 are respectively in contact with the first ring 303 and the housing 1. The spring 302 can drive the first ring 303 to slide under the elastic action. The first ring 303 is fixedly connected to one end of the support rod 304. The support rod 304 drives the first ring 303 to slide;

[0023] The outer wall of the support rod 304 is slidably connected with the housing 1. The other end of the support rod 304 is fixedly connected with a pull ring 305. The pull ring 305 drives the support rod 304 to slide. A pin rod 306 is fixedly connected to the outer wall of the first ring 303. The first ring 303 drives the pin rod 306 to move. The outer wall of the pin rod 306 is engaged with a card slot arranged inside the second ring 307. The cooperation between the pin rod 306 and the card slot arranged inside the second ring 307 positions the second ring 307. The second ring 307 is rotatably connected to the outer wall of the sliding rod 301. The second ring 307 slides on the outer wall of the sliding rod 301. A connecting rod 8 is fixedly connected to the outer wall of the second ring 307. The second ring 307 drives the connecting rod 8 to move. The end of the connecting rod 8 is fixedly connected with a docking head 9. The connecting head 9 moves together with the connecting rod 8. The docking head 9 is fixedly connected to the end of the machine arm 10. The docking head 9 moves together with the machine arm 10;

[0024] Pull the pull ring 305. The pull ring 305 drives the support rod 304 to slide. The support rod 304 drives the first ring 303 to move. The first ring 303 slides on the outer wall of the sliding rod 301 and compresses the spring 302. The first ring 303 drives the pin rod 306 to move. The pin rod 306 is separated from the card slot arranged inside the second ring 307. Rotate the machine arm 10 to the position required for folding the machine arm 10. Release the pull ring 305. The spring 302 drives the first ring 303 to slide in the reverse direction under the elastic action. The first ring 303 drives the pin rod 306 to move. The pin rod 306 is inserted into the corresponding card slot inside the second ring 307 to position the second ring 307, and further position the machine arm 10. When the machine arm 10 needs to be extended, the operation direction is the same as above. Rotate the machine arm 10 to the extended position. The cooperation between the pin rod 306 and the second ring 307 fixes the position of the machine arm 10. When positioning the machine arm 10, both sides of the machine arm 10 are clamped and fixed, and the positioning effect during clamping of the machine arm 10 is better.

[0025] The disassembly mechanism 4 includes a support plate 401, a screw 402, a nut 403 and a nut 404. Both housing bodies 1 are in clearance fit with the outer wall of the support plate 401. The support plate 401 can be inserted into the interiors of the two housing bodies 1. Both the support plate 401 and the housing bodies 1 are in clearance fit with the outer wall of the screw 402. The screw 402 can pass through the through holes provided inside the support plate 401 and the housing bodies 1. A nut 403 is fixedly connected to one end of the screw 402. The nut 403 cannot pass through the housing bodies 1 and the support plate 401. The outer wall of the other end of the screw 402 is threadedly connected with a nut 404. The screw 402, the nut 404 and the nut 403 cooperate to fix the support plate 401 inside the housing bodies 1. The outer wall of the nut 404 is fixedly connected to the housing bodies 1;

[0026] The nut 403 drives the screw 402 to rotate. When the screw 402 rotates, the nut 404 separates, and the screw 402 is withdrawn from the support plate 401 and the housing bodies 1, separating the two housing bodies 1 from the support plate 401. Further, the groove 2 is separated from the square block 7, and the spring 302 and the first ring 303 are removed from the outer wall of the sliding rod 301. The second ring 307, the sliding rod 301, the connecting rod 8, the docking head 8 and the machine arm 10 are removed, and the machine arm 10 is replaced. When the machine arm 10 is damaged or worn, it is convenient to disassemble and replace the machine arm 10.

[0027] Working principle:

[0028] When the machine arm folding structure of the rotary-wing unmanned aerial vehicle is in use, a fixing bolt is used to pass through the mounting hole 6 to fixedly install the mounting frame 5 on the rotary-wing unmanned aerial vehicle;

[0029] Machine arm folding and stretching stage:

[0030] Pull the pull ring 305. The pull ring 305 drives the support rod 304 to slide. The support rod 304 drives the first ring 303 to move. The first ring 303 slides on the outer wall of the sliding rod 301 and compresses the spring 302. The first ring 303 drives the pin rod 306 to move. The pin rod 306 separates from the card slot provided inside the second ring 307. Rotate the machine arm 10 to the position required for folding the machine arm 10. Release the pull ring 305. The spring 302 drives the first ring 303 to slide in the reverse direction under the elastic action. The first ring 303 drives the pin rod 306 to move. The pin rod 306 is inserted into the corresponding card slot inside the second ring 307 to position the position of the second ring 307, and further position the position of the machine arm 10. When the machine arm 10 needs to be stretched, the operation method is the same as above. Rotate the machine arm 10 to the stretched position. The pin rod 306 cooperates with the second ring 307 to fix the position of the machine arm 10. When positioning the position of the machine arm 10, the two sides of the machine arm 10 are clamped and fixed. When clamping the machine arm 10, the positioning effect is better. A threaded hole is provided at the end of the machine arm 10. The threaded hole at the end of the machine arm 10 is used for the installation of the rotor;

[0031] Mechanical disassembly stage:

[0032] When the arm 10 needs to be disassembled and replaced, separate the mounting bracket 5 from the rotary-wing unmanned aircraft, separate the mounting bracket 5 from the two shells 1, rotate the nut 403, the nut 403 drives the screw 402 to rotate, and the nut 404 separates when the screw 402 rotates. Pull out the screw 402 from the support plate 401 and the shell 1, separate the two shells 1 from the support plate 401, and then the groove 2 is separated from the square block 7. Remove the spring 302 and the first ring 303 from the outer wall of the sliding rod 301, remove the second ring 307, the sliding rod 301, the connecting rod 8, the docking head 8 and the arm 10, and replace the arm 10. When the arm 10 is damaged or worn, it is convenient to disassemble and replace the arm 10. After the replacement is completed, set the spring 302 and the first ring 303 on the outer wall of the sliding rod 301, insert the square block 7 into the inside of the groove 2, insert the screw 402 into the through holes in the shell 1 and the support plate 401 and screw it into the inside of the nut 404. The nut 404, the screw 402 and the nut 403 fix the support plate 401 and the shell 1, and then connect the two shells 1 on both sides to complete the installation of the arm 10.

[0033] Although the present utility model has been illustrated and described by reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and detail may be made within the scope of the claims.

Claims

1. A folding structure for the arm of a rotor unmanned aerial vehicle, comprising a housing (1) and a groove (2), the groove (2) being provided inside the housing (1), characterized in that: Inside the housing (1), a disassembly mechanism (4) is provided. Both of the housings (1) are fixedly connected to the mounting bracket (5) by bolts. Inside the mounting bracket (5), a mounting hole (6) is provided. Inside the groove (2), a square block (7) is in clearance fit. Below the square block (7), a folding mechanism (3) is provided.

2. The folding structure of the arm of a rotor unmanned aerial vehicle according to claim 1, wherein: The folding mechanism (3) includes a slide bar (301). The square block (7) is fixedly connected to the end of the slide bar (301). A first ring (303) is slidably connected to the outer wall of the slide bar (301). A spring (302) is sleeved on the outer wall of the slide bar (301). The two ends of the spring (302) are respectively in contact with the first ring (303) and the housing (1). The first ring (303) is fixedly connected to one end of a support rod (304). The outer wall of the support rod (304) is slidably connected to the housing (1). The other end of the support rod (304) is fixedly connected to a pull ring (305). A pin rod (306) is fixedly connected to the outer wall of the first ring (303). The outer wall of the pin rod (306) is engaged with a card slot provided inside a second ring (307). The second ring (307) is rotatably connected to the outer wall of the slide bar (301).

3. A folding structure for the arm of a rotary-wing unmanned aerial vehicle according to claim 1, characterized in that: The disassembly mechanism (4) includes a support plate (401). Both of the housings (1) are in clearance fit with the outer wall of the support plate (401). The support plate (401) and the housing (1) are both in clearance fit with the outer wall of a screw rod (402). One end of the screw rod (402) is fixedly connected to a nut (403). The outer wall of the other end of the screw rod (402) is threadedly connected to a nut (404). The outer wall of the nut (404) is fixedly connected to the housing (1).

4. The folding structure of the arm of a rotor unmanned aerial vehicle according to claim 2, wherein: A connecting rod (8) is fixedly connected to the outer wall of the second ring (307). A docking head (9) is fixedly connected to the end of the connecting rod (8).

5. A folding structure of the arm of a rotor unmanned aerial vehicle according to claim 4, characterized in that: The docking head (9) is fixedly connected to the end of the machine arm (10).

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