Unmanned aerial vehicle arm folding structure and unmanned aerial vehicle

Abstract

The invention provides an unmanned aerial vehicle arm folding structure and an unmanned aerial vehicle. The vehicle arms comprise a first combined arm, a second combined arm and a third combined arm; two first connecting plates are rotationally arranged at one end of the first combined arm, and the other ends of the first connecting plates are fixedly connected with one end of the second combined arm. After the unmanned aerial vehicle falls, the first driving assembly and the second driving assembly are started to work, the second combined arm and the third combined arm are driven to be folded, the second combined arm and the third combined arm in the four vehicle arms are all folded to form a shell for protecting the unmanned aerial vehicle, the shell wraps the unmanned aerial vehicle, and then the unmanned aerial vehicle is protected; and meanwhile, through the arranged rubber blocks, the four corners of the unmanned aerial vehicle can be protected in a reinforced mode after the second combined arms are folded, and the protection effect is further enhanced.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and in particular to a folding structure of an unmanned aerial vehicle arm and a unmanned aerial vehicle. Background Art

[0002] The folding structure of drone arms means that the arms on the drone body can be folded and unfolded through certain mechanical design and control means. This design can make the drone smaller when the arms are not in use, making it easier to carry and store, and can be unfolded when needed to provide a larger working range and functions.

[0003] The prior art can refer to the Chinese authorized invention patent with publication number CN117326113B. The prior art is specifically a drone arm folding structure and a drone, which includes a rotating shaft, an arm is slidably mounted on the rotating shaft, the arm slides along the circumferential direction of the rotating shaft, a sliding component is arranged between the arm and the rotating shaft, a clamping component is arranged on the rotating shaft, the clamping component can fix the arm and swing vertically with the arm, and the sliding component includes: a first limiting groove, the first limiting groove is arranged on the side wall of the rotating shaft, the first limiting groove is arranged along the circumferential direction of the rotating shaft; a second limiting groove, the second limiting groove is arranged along the axial direction of the rotating shaft, and the first limiting groove is connected to the second limiting groove; a sliding block, the sliding block is slidably mounted in the first limiting groove, the sliding block is fixedly connected to the arm, the sliding block can slide relative to the second limiting groove, and the width of the sliding block is the same as the width of the second limiting groove. The prior art mainly improves the effect of the flight stability of the drone when facing external force interference.

[0004] In actual implementation, the above-mentioned prior art improves the flight stability of the drone when facing external force interference through the movable arm. However, when the drone fails and falls out of control due to accidents such as malfunction, the drone cannot be protected by the arm. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a drone arm folding structure and a drone, which are used to solve the problem in the above-mentioned prior art that the drone cannot be protected by the arm when the drone fails or other accidents cause the drone to lose control and fall to the ground.

[0006] To achieve the above-mentioned purpose, the present invention provides a folding structure of an unmanned aerial vehicle arm and an unmanned aerial vehicle, comprising: an arm; the arm comprises a first combined arm, a second combined arm, and a third combined arm; one end of the first combined arm is rotatably provided with two first connecting plates, the other end of the first connecting plate is fixedly connected to one end of the second combined arm, and the other end of the second combined arm is rotatably provided with two second connecting plates, the other end of the second connecting plate is fixedly connected to one end of the third combined arm; a first driving component is provided at one end inside the first combined arm, used to drive one end of the first connecting plate to rotate, and a second driving component is provided inside the second combined arm, used to drive one end of the second connecting plate to rotate; a rubber block is provided at the bottom of the second combined arm, and the rubber block is arc-shaped as a whole.

[0007] Further, the first driving assembly includes an L-shaped plate slidably arranged inside the first combined arm, a first rotating shaft rotatably arranged at one end inside the first combined arm, and a first electric telescopic rod fixedly installed inside the first combined arm; a plurality of first teeth are arranged on one end of the L-shaped plate and on the outer wall of the first rotating shaft, and the L-shaped plate is meshed with the first rotating shaft; the two ends of the first rotating shaft are respectively fixedly connected to one end of the two first connecting plates; and the output end of the first electric telescopic rod is fixedly connected to the other end of the L-shaped plate.

[0008] Furthermore, a sliding groove is provided at the inner bottom of the first combined arm, and the bottom of the L-shaped plate is slidably connected to the sliding groove via a sliding block.

[0009] Further, the second driving assembly includes a moving plate slidably arranged inside the second combined arm, a second rotating shaft rotatably arranged inside the second combined arm, and a second electric telescopic rod fixedly arranged inside the second combined arm, wherein the output end of the second electric telescopic rod is fixedly connected to the outer wall of the moving plate; a plurality of second teeth are arranged on one end of the moving plate and the outer wall of the second rotating shaft, the moving plate is meshed with the second rotating shaft, and the two ends of the second rotating shaft are respectively fixedly connected to one end of two second connecting plates.

[0010] Furthermore, a plurality of first springs are provided at the inner top of the second combined arm, the bottoms of the plurality of first springs are commonly connected to a support plate, a plurality of first buffer blocks are provided at the top of the support plate, two third springs are provided inside the first buffer blocks, the tops of the two third springs are commonly connected to a first movable block, a plurality of first grooves are opened at the top of the second combined arm, and the first buffer blocks and the first movable blocks are both located in the first grooves.

[0011] Furthermore, two second wedge blocks are provided at the bottom of the support plate, and two first wedge blocks are provided at the other end of the movable plate.

[0012] Furthermore, a pull rope is provided at the other end of the second combined arm, and a linkage bar is slidingly provided inside the third combined arm, the free end of the pull rope is fixedly connected to one end of the linkage bar, and a plurality of push plates are provided on the linkage bar; the top and bottom of the third combined arm are respectively hinged with a second buffer block and a third buffer block, two fourth springs are provided inside the second buffer block and the third buffer block, and the tops of the two fourth springs are commonly connected to a second movable block, and folding plates are provided on the second buffer block and the third buffer block, and the folding plates are located between the two push plates; the second buffer block and the third buffer block are mirror-imaged, and a channel is opened on the folding plate; a second spring is provided at the other end inside the third combined arm, and one end of the second spring is connected to the other end of the linkage bar.

[0013] Furthermore, a second groove and a third groove are respectively formed at the top and the bottom of the third combined arm, and the second buffer block and the third buffer block are rotatably disposed in the second groove and the third groove respectively.

[0014] A drone comprises a drone body and arms, wherein four arms are respectively arranged at two ends of the drone body, one end of the arm away from the drone body is provided with a fan blade, and two tripods are relatively arranged at the bottom of the drone body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. After the UAV falls, the first drive assembly and the second drive assembly are started to work, driving the second combined arm and the third combined arm to fold. The second combined arm and the third combined arm of the four arms are all folded to form a shell to protect the UAV, which covers the outside of the UAV, thereby protecting the UAV, which can greatly reduce the damage caused by the crash. At the same time, the rubber blocks can be used to strengthen the protection of the four corners of the UAV after the second combined arm is folded, further enhancing the protection effect;

[0017] Second, when the second electric telescopic rod pushes the moving plate to move, the first wedge block on the moving plate moves and contacts the second wedge block, and the moving plate drives the first wedge block to move continuously, and the movement of the first wedge block drives the second wedge block to move upward, thereby driving the supporting plate to move upward, and the supporting plate drives the three first buffer blocks and the three first movable blocks to move upward out of the first groove, and the moved first movable blocks contact the outer wall of the UAV, and in the event of a crash, the third spring inside the first buffer block can provide a strong buffering effect, thereby greatly enhancing the protection effect of the UAV;

[0018] 3. When the third combined arm is rotated and folded, the linkage bar is moved by pulling the pull rope. When the linkage bar moves, the upper and lower folding plates are pushed by the push plate arranged on the linkage bar. Since the second buffer block and the third buffer block are rotatably arranged, when the folding plate is subjected to thrust, the second buffer block and the third buffer block will be driven to rotate. When the linkage bar moves to the end, the second buffer block and the third buffer block will be driven to rotate, so that the second movable block becomes an upward and downward state, so that a part of the second movable block contacts the upper and lower outer walls of the drone, and the other part contacts the ground when the drone lands. The fourth spring allows the second movable block to buffer and unload force, thereby enhancing the protection effect on the drone.

[0019] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a first three-dimensional structure of the machine arm in the present invention;

[0021] Figure 2 It is a schematic diagram of a second three-dimensional structure of the machine arm in the present invention;

[0022] Figure 3 is a cross-sectional view of the machine arm in the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the first combined arm in the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the second combined arm in the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of the third combined arm in the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure of the first buffer block in the present invention;

[0027] Figure 8 is a schematic structural diagram of the second buffer block in the present invention;

[0028] Fig. 9 It is a schematic diagram of the internal structure of the second buffer block in the present invention;

[0029] Fig.10 It is a structural schematic diagram of the linkage bar in the present invention;

[0030] Fig.11 It is a structural schematic diagram of the drone body in the present invention.

[0031] In the figure: 1, machine arm; 101, first combined arm; 102, second combined arm; 103, third combined arm; 2, rubber block; 3, first groove; 4, second groove; 5, third groove; 6, first electric telescopic rod; 7, first buffer block; 8, second buffer block; 9, third buffer block; 10, first tooth; 11, first rotating shaft; 12, slide groove; 13, first connecting plate; 14, second connecting plate; 15, L-shaped plate; 16, second tooth teeth; 17, second electric telescopic rod; 18, first wedge block; 19, second wedge block; 20, support plate; 21, second rotating shaft; 22, first spring; 23, pull rope; 24, moving plate; 25, linkage strip; 26, folding plate; 27, push plate; 28, second spring; 29, first movable block; 30, third spring; 31, second movable block; 32, channel; 33, fourth spring; 34, drone body; 35, tripod; 36, fan blades. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0033] Reference Figure 1-11 As shown, a folding structure of an unmanned aerial vehicle arm and the unmanned aerial vehicle include: an arm 1; the arm 1 includes a first combined arm 101, a second combined arm 102, and a third combined arm 103; one end of the first combined arm 101 is rotatably provided with two first connecting plates 13, the other end of the first connecting plate 13 is fixedly connected to one end of the second combined arm 102, and the other end of the second combined arm 102 is rotatably provided with two second connecting plates 14, and the other end of the second connecting plate 14 is fixedly connected to one end of the third combined arm 103; a first driving component is provided at one end inside the first combined arm 101 for driving one end of the first connecting plate 13 to rotate, and a second driving component is provided inside the second combined arm 102 for driving one end of the second connecting plate 14 to rotate; a rubber block 2 is provided at the bottom of the second combined arm 102, and the rubber block 2 is arc-shaped as a whole.

[0034] The present invention provides a technical solution. When in use, one end of the first combined arm 101 is installed on the drone, and the fan blade is installed on the other end of the third combined arm 103 for use. After the drone falls, the sensor set inside the first combined arm 101 senses that the drone is falling and then starts the first drive component and the second drive component to work, or manually controls the first drive component and the second drive component through the remote end. The controller and signal transceiver set inside the first combined arm 101 can realize remote control, control the first drive component to drive the first connecting plate 13 to rotate, and then drive the second combined arm 1 02 rotates 90 degrees around the first connecting plate 13, so that the second combined arm 102 remains parallel to the outer walls of the two sides of the drone, and then drives the third combined arm 103 to rotate 90 degrees through the second driving component, so that the third combined arm 103 is parallel to the top of the drone. The second combined arm 102 and the third combined arm 103 of the four arms 1 are all folded to form a shell to protect the drone, which is wrapped around the outside of the drone, thereby protecting the drone, which can greatly reduce the damage caused by the crash. At the same time, the rubber block 2 can be set to strengthen the protection of the four corners of the drone after the second combined arm 102 is folded, thereby further strengthening the protection effect.

[0035] Preferably: the first driving assembly includes an L-shaped plate 15 slidably arranged inside the first combined arm 101, a first rotating shaft 11 rotatably arranged at one end inside the first combined arm 101, and a first electric telescopic rod 6 fixedly installed inside the first combined arm 101; a plurality of first teeth 10 are arranged on one end of the L-shaped plate 15 and on the outer wall of the first rotating shaft 11, and the L-shaped plate 15 is meshed with the first rotating shaft 11; the two ends of the first rotating shaft 11 are respectively fixedly connected to one end of the two first connecting plates 13; the output end of the first electric telescopic rod 6 is fixedly connected to the other end of the L-shaped plate 15, and a slide groove 12 is provided at the inner bottom of the first combined arm 101, and the bottom of the L-shaped plate 15 is slidably connected to the slide groove 12 through a slider.

[0036] Specifically, when the second combined arm 102 needs to be folded, the first electric telescopic rod 6 is started to work, and the L-shaped plate 15 is pushed to move by the first electric telescopic rod 6. The L-shaped plate 15 moves, and the first rotating shaft 11 is driven to rotate under the action of the first tooth 10. The first rotating shaft 11 drives the first connecting plate 13 to rotate, and then drives the second combined arm 102 to rotate, so as to achieve the effect of folding the second combined arm 102. The movement of the L-shaped plate 15 is facilitated by providing a sliding groove 12 inside the first combined arm 101, and the second combined arm 102 is driven to reset when the L-shaped plate 15 is reset.

[0037] Preferably: the second driving assembly includes a moving plate 24 slidably arranged inside the second combined arm 102, a second rotating shaft 21 rotatably arranged inside the second combined arm 102, and a second electric telescopic rod 17 fixedly arranged inside the second combined arm 102, wherein the output end of the second electric telescopic rod 17 is fixedly connected to the outer wall of the moving plate 24; a plurality of second teeth 16 are arranged on one end of the moving plate 24 and the outer wall of the second rotating shaft 21, the moving plate 24 is meshed with the second rotating shaft 21, and the two ends of the second rotating shaft 21 are respectively fixedly connected to one end of the two second connecting plates 14;

[0038] A plurality of first springs 22 are arranged at the inner top of the second combined arm 102, and the bottoms of the plurality of first springs 22 are commonly connected to a support plate 20, a plurality of first buffer blocks 7 are arranged at the top of the support plate 20, two third springs 30 are arranged inside the first buffer block 7, and the tops of the two third springs 30 are commonly connected to a first movable block 29, a plurality of first grooves 3 are opened at the top of the second combined arm 102, the first buffer blocks 7 and the first movable blocks 29 are both located in the first grooves 3, two second wedge blocks 19 are arranged at the bottom of the support plate 20, and two first wedge blocks 18 are arranged at the other end of the movable plate 24.

[0039] Specifically, when the third combined arm 103 is folded, the second electric telescopic rod 17 is started to push the moving plate 24 to move, and the second rotating shaft 21 is driven to rotate, and the third combined arm 103 is driven to rotate through the second rotating shaft 21, so as to achieve the effect of folding the third combined arm 103. When the second electric telescopic rod 17 pushes the moving plate 24 to move, the first wedge block 18 on the moving plate 24 moves and contacts the second wedge block 19, and the moving plate 24 drives the first wedge block 18 to move continuously, and the movement of the first wedge block 18 drives the second wedge block 19 to move upward, thereby driving the support plate 20 to move upward, and the support plate 20 drives the three first buffer blocks 7 and the three first movable blocks 29 to move upward out of the first groove 3, and the first movable blocks 29 that move out contact the outer wall of the drone, and the third spring 30 inside the first buffer block 7 can provide a strong buffering effect in the event of a crash, thereby greatly enhancing the protection effect on the drone. After the movable plate 24 is reset, the first spring 22 drives the support plate 20 and the first movable block 29 to automatically reset.

[0040] Preferably: a pull rope 23 is provided at the other end of the second combined arm 102, a linkage bar 25 is slidably provided inside the third combined arm 103, a free end of the pull rope 23 is fixedly connected to one end of the linkage bar 25, and a plurality of push plates 27 are provided on the linkage bar 25;

[0041] The top and bottom of the third combined arm 103 are respectively hinged with a second buffer block 8 and a third buffer block 9, two fourth springs 33 are arranged inside the second buffer block 8 and the third buffer block 9, the tops of the two fourth springs 33 are commonly connected with a second movable block 31, and the second buffer block 8 and the third buffer block 9 are both provided with a folding plate 26, which is located between the two push plates 27;

[0042] The second buffer block 8 and the third buffer block 9 are arranged in a mirror image, and a channel 32 is opened on the folding plate 26; a second spring 28 is arranged at the other end inside the third combined arm 103, and one end of the second spring 28 is connected to the other end of the linkage bar 25;

[0043] The top and the bottom of the third combined arm 103 are respectively provided with a second groove 4 and a third groove 5 , and the second buffer block 8 and the third buffer block 9 are rotatably disposed in the second groove 4 and the third groove 5 , respectively.

[0044] Specifically, when the third combined arm 103 is rotated and folded, the pull rope 23 will be wound around it. The length of the pull rope is fixed, and the distance between the third combined arm 103 and one end of the pull rope 23 becomes farther, thereby generating a pulling force. The pull rope 23 pulls the linkage bar 25 to move. When the linkage bar 25 moves, the upper and lower folding plates 26 will be pushed by the push plate 27 set on the linkage bar 25. Since the second buffer block 8 and the third buffer block 9 are rotatably set, when the folding plate 26 is subjected to a thrust, the second buffer block 8 and the third buffer block 9 will be driven to rotate. When the linkage bar 25 moves to the end, the second buffer block 8 and the third buffer block 9 will be driven to rotate 90 degrees, so that the second movable block 31 becomes an upward and downward state, so that a part of the second movable block 31 contacts the upper and lower outer walls of the drone, and the other part contacts the ground when the drone lands. The second movable block 31 can be buffered and unloaded through the fourth spring 33, thereby enhancing the protection effect on the drone. After the third combined arm 103 is reset, the second spring 28 drives the linkage bar 25 to reset, and the linkage bar 25 drives the second buffer block 8 and the third buffer block 9 to reset.

[0045] refer to Fig.11 As shown, a drone includes a drone body 34 and an arm 1, wherein four arms 1 are respectively arranged at both ends of the drone body 34, a fan blade 36 is arranged at one end of the arm 1 away from the drone body 34, and two tripods 35 are relatively arranged at the bottom of the drone body 34.

[0046] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A drone arm folding structure, characterized in that: include: Arm (1); The machine arm (1) comprises a first combined arm (101), a second combined arm (102), and a third combined arm (103); One end of the first combined arm (101) is rotatably provided with two first connecting plates (13), the other end of the first connecting plate (13) is fixedly connected to one end of the second combined arm (102), the other end of the second combined arm (102) is rotatably provided with two second connecting plates (14), the other end of the second connecting plate (14) is fixedly connected to one end of the third combined arm (103); A first driving assembly is provided at one end inside the first combined arm (101) for driving one end of the first connecting plate (13) to rotate, and a second driving assembly is provided inside the second combined arm (102) for driving one end of the second connecting plate (14) to rotate; A rubber block (2) is provided at the bottom of the second combined arm (102), and the rubber block (2) is arc-shaped as a whole.

2. The drone arm folding structure according to claim 1, characterized in that: The first driving assembly comprises an L-shaped plate (15) slidably arranged inside the first combined arm (101), a first rotating shaft (11) rotatably arranged at one end inside the first combined arm (101), and a first electric telescopic rod (6) fixedly installed inside the first combined arm (101); A plurality of first teeth (10) are provided on one end of the L-shaped plate (15) and on the outer wall of the first rotating shaft (11), and the L-shaped plate (15) is meshed with the first rotating shaft (11); Both ends of the first rotating shaft (11) are fixedly connected to one end of the two first connecting plates (13) respectively; The output end of the first electric telescopic rod (6) is fixedly connected to the other end of the L-shaped plate (15).

3. The drone arm folding structure according to claim 2, characterized in that: The inner bottom of the first combined arm (101) is provided with a sliding groove (12), and the bottom of the L-shaped plate (15) is slidably connected to the sliding groove (12) via a sliding block.

4. The drone arm folding structure according to claim 1, characterized in that: The second driving assembly comprises a moving plate (24) slidably arranged inside the second combined arm (102), a second rotating shaft (21) rotatably arranged inside the second combined arm (102), and a second electric telescopic rod (17) fixedly arranged inside the second combined arm (102), wherein an output end of the second electric telescopic rod (17) is fixedly connected to an outer wall of the moving plate (24); A plurality of second teeth (16) are provided on one end of the movable plate (24) and on the outer wall of the second rotating shaft (21); the movable plate (24) is meshed with the second rotating shaft (21); and the two ends of the second rotating shaft (21) are respectively fixedly connected to one end of the two second connecting plates (14).

5. The drone arm folding structure according to claim 4, characterized in that: A plurality of first springs (22) are arranged at the inner top of the second combined arm (102), the bottoms of the plurality of first springs (22) are commonly connected to a support plate (20), a plurality of first buffer blocks (7) are arranged at the top of the support plate (20), two third springs (30) are arranged inside the first buffer block (7), the tops of the two third springs (30) are commonly connected to a first movable block (29), a plurality of first grooves (3) are opened at the top of the second combined arm (102), the first buffer blocks (7) and the first movable blocks (29) are both located in the first grooves (3).

6. The drone arm folding structure according to claim 5, characterized in that: Two second wedge blocks (19) are arranged at the bottom of the support plate (20), and two first wedge blocks (18) are arranged at the other end of the movable plate (24).

7. The drone arm folding structure according to claim 1, characterized in that: The other end of the second combined arm (102) is provided with a pull rope (23), and a linkage bar (25) is slidably provided inside the third combined arm (103), the free end of the pull rope (23) is fixedly connected to one end of the linkage bar (25), and a plurality of push plates (27) are provided on the linkage bar (25); The top and bottom of the third combined arm (103) are respectively hinged with a second buffer block (8) and a third buffer block (9); two fourth springs (33) are arranged inside the second buffer block (8) and the third buffer block (9); the tops of the two fourth springs (33) are commonly connected to a second movable block (31); the second buffer block (8) and the third buffer block (9) are both provided with a folding plate (26); the folding plate (26) is located between the two push plates (27); The second buffer block (8) and the third buffer block (9) are arranged in a mirror image, and a channel (32) is provided on the folding plate (26); A second spring (28) is disposed at the other end inside the third combined arm (103), and one end of the second spring (28) is connected to the other end of the linkage bar (25).

8. The drone arm folding structure according to claim 7, characterized in that: The top and bottom of the third combined arm (103) are respectively provided with a second groove (4) and a third groove (5), and the second buffer block (8) and the third buffer block (9) are rotatably arranged in the second groove (4) and the third groove (5), respectively.

9. An unmanned aerial vehicle, comprising an unmanned aerial vehicle body (34), characterized in that: It also includes the machine arm (1) as described in claim 1, wherein four of the machine arms (1) are respectively arranged at two ends of the drone body (34), a fan blade (36) is arranged at one end of the machine arm (1) away from the drone body (34), and two tripods (35) are arranged opposite to each other at the bottom of the drone body (34).

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