Anti-loosening connector and unmanned aerial vehicle thereof

Abstract

The utility model relates to an unmanned plane technical field, concretely relates to a kind of anti-loose connecting piece and its unmanned plane, and anti-loose connecting piece includes first fixed buckle, U-shaped buckle, pivot, first handle, mounting seat, second handle and second fixed buckle;First fixed buckle, mounting seat and second fixed buckle are sequentially arranged along first direction;The inner side of the closed end of U-shaped buckle is connected with first fixed buckle, and a pair of rod bodies of the open end of U-shaped buckle correspond with pivot perpendicular connection;Pivot is rotatably connected with first handle;Mounting seat is arranged in the inner side of U-shaped buckle;The first end of first handle is hinged with mounting seat, and tail end is elastically hinged with second handle;Second handle is connected with second fixed buckle. Anti-loose connecting piece each component connection is close, can ensure that unmanned plane does not occur loosening in the flight process arm and rack, and anti-loose connecting piece can realize quick disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to an anti-loosening connector and its UAV. Background Technology

[0002] With the popularization of civilian drone technology, drones have permeated all aspects of people's lives, such as disaster relief, street scene photography, surveillance and inspection, environmental monitoring, power line inspection, traffic monitoring, agricultural plant protection, and express delivery. When transporting drones, especially heavy-duty drones with payloads of 200-1000KG, they occupy most of the space in the transport vehicle. To reduce the space occupied by the drone, it is necessary to fold and store the drone's arms first.

[0003] Existing heavy-load drones typically use motors to drive a hinged structure to rotate, folding or unfolding the arms. While the motors can effectively lock the arms, this method is costly. Alternatively, a hinged structure and a latching structure can be installed at the junction of the drone's frame and arms. These structures are distributed on a pair of parallel surfaces, such as the top and bottom surfaces. This allows the arms to swing vertically around the hinged structure after the latches are unlocked, enabling the arms to be retracted relative to the frame.

[0004] Heavy-payload drones require higher strength in the connection between the arms and the frame, making existing latching structures laborious to operate manually; or requiring bolts for fixation at the latches, which is cumbersome. Therefore, there is an urgent need for a latching structure that can lock or unlock the arms and frame. This structure must ensure the connection strength between the arms and frame during drone flight to prevent loosening, while also being easy to assemble and disassemble for convenient manual operation. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an anti-loosening connector and its drone, which solves the technical problem that the existing drone's snap-fit ​​structure has poor adaptability to locking or unlocking the arms and frame of heavy-load drones.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the anti-loosening connector of this utility model includes a first fixing buckle, a U-shaped buckle, a rotating shaft, a first handle, a mounting base, a second handle, and a second fixing buckle.

[0009] The first fixing buckle, the mounting base, and the second fixing buckle are arranged sequentially along a first direction; the inner side of the closed end of the U-shaped buckle is engaged with the first fixing buckle, and a pair of rods at the open end of the U-shaped buckle are perpendicularly connected to the rotating shaft; the rotating shaft is rotatably connected to the first handle; the mounting base is disposed on the inner side of the U-shaped buckle; the first end of the first handle is hinged to the mounting base, and the tail end is elastically hinged to the second handle; the second handle is engaged with the second fixing buckle.

[0010] Optionally, the first fixing buckle includes a hook plate, a vertical plate, and a fixing plate connected in a T-shape;

[0011] The hook plate is disposed on the side of the vertical plate opposite to the first handle;

[0012] The corner at the connection between the hook plate and the vertical plate faces downwards, so that the closed end of the U-shaped buckle engages with the corner.

[0013] Optionally, the mounting base is provided with adjusting bolts and adjusting nuts;

[0014] The first handle has a pair of lugs at its head; the mounting base engages with the inner side of the pair of lugs.

[0015] The adjusting bolt passes through the mounting base and the pair of lugs and is then screwed into the adjusting nut.

[0016] Optionally, the first handle has an internal clearance groove; the second handle can move within the clearance groove.

[0017] Optionally, the second handle includes a torsion spring, a hinge shaft, a pair of arc-shaped plates, and an S-shaped hook, a connecting plate, and a pressure plate;

[0018] A pair of arc-shaped plates are arranged parallel to each other on the side of the connecting plate facing the rotating shaft; the hinge shaft is arranged perpendicularly on the pair of arc-shaped plates; the torsion spring is arranged between the pair of arc-shaped plates and sleeved on the hinge shaft; the first handle and the pair of arc-shaped plates are elastically hinged through the hinge shaft and the torsion spring;

[0019] The barb engages with the second fixing buckle.

[0020] Optionally, the outer wall of the arc-shaped plate abuts against the wall of the clearance groove.

[0021] Optionally, the arc-shaped surface of the arc plate abuts against the wall of the clearance groove.

[0022] Furthermore, this utility model also provides a drone, which includes the anti-loosening connector as described above; the drone also includes an arm and a frame;

[0023] The arm is hinged to one end of the frame via a hinge rod, and the other end is detachably connected via the anti-loosening connector;

[0024] The first fixing buckle is disposed on the machine arm; the mounting base and the second fixing buckle are both disposed on the machine frame.

[0025] Optionally, the drone includes a plurality of arms hinged to the frame;

[0026] The machine arm is located at the corner of the frame, with the anti-loosening connector disposed on the top surface of the machine arm and the hinge rod disposed on the bottom surface of the frame, so that the machine arm can swing vertically after the anti-loosening connector is unlocked;

[0027] The machine arm is located in the middle of the frame. The anti-loosening connector is provided on the left side of the machine arm, and the hinge rod is provided on the right side of the frame, so that the machine arm can swing in the horizontal direction after the anti-loosening connector is unlocked.

[0028] (III) Beneficial Effects

[0029] The beneficial effects of this utility model are:

[0030] The first fixing buckle, the mounting base, and the second fixing buckle form three limiting fulcrums. Compared with the traditional limiting structure of two fulcrums (i.e., hinge shaft and buckle), the limiting strength of the anti-loosening connector of this utility model is higher and its adaptability to heavy-load UAVs is stronger.

[0031] The flexible hinge structure allows the second handle to be securely engaged with the second fixing buckle, thereby limiting the rotation of the first handle around the adjusting bolt. This secures the first handle by fixing the second handle, ensuring the stability of the engagement between the first fixing buckle and the U-shaped buckle. On one hand, the anti-loosening connector components are tightly connected. The first fixing buckle, mounting base, and second fixing buckle act as three limiting fulcrums, fixing the bottom connecting components of the three components, ensuring the connection strength between the drone's arm and frame during flight, and preventing loosening. On the other hand, when unlocking is required, the operator manually holds the first and second handles, with the index and middle fingers positioned below the second handle. Pressing upwards with the index and middle fingers brings the second handle closer to the first handle, unlocking the second handle from the second fixing buckle. At this point, the first handle can be rotated counterclockwise around the adjusting bolt, disengaging the closed end of the U-shaped buckle from the first fixing buckle, thus unlocking the U-shaped buckle from the first fixing buckle and separating the components connected to the first and second fixing buckles. Compared to the traditional snap-fit ​​connection method, manually pressing the elastic hinged second handle is more labor-saving and eliminates the need to remove bolts from the snap-fit, thus improving the convenience of manual operation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the anti-loosening connector of this utility model in the locked state;

[0033] Figure 2 This is a perspective view of the anti-loosening connector of this utility model;

[0034] Figure 3 This is a schematic diagram of the anti-loosening connector of the present invention after removing the first handle;

[0035] Figure 4 This is a schematic diagram of the bottom structure of the first handle of this utility model;

[0036] Figure 5 This is a schematic diagram of the structure of the second handle of this utility model;

[0037] Figure 6 This is a partial cross-sectional view of the anti-loosening connector of this utility model;

[0038] Figure 7 This is a schematic diagram showing the connection of the top of the machine arm, frame, and anti-loosening connector of this utility model;

[0039] Figure 8 This is a schematic diagram showing the connection of the bottom of the machine arm, frame, and anti-loosening connector of this utility model;

[0040] Figure 9 This is a schematic diagram of the structure of the UAV of this utility model in its deployed state;

[0041] Figure 10 This is a schematic diagram of the structure of the drone of this utility model in the folded state.

[0042] [Explanation of Labels in the Attached Image]

[0043] 1: First fixing buckle;

[0044] 2: U-shaped buckle;

[0045] 3: Shaft;

[0046] 4: First handle; 41: Ear plate; 42: Clearance groove;

[0047] 5: Mounting bracket;

[0048] 6: Second handle; 61: Curved plate; 62: Barb; 63: Connecting plate; 64: Pressure plate;

[0049] 7: Second fixing buckle;

[0050] 8: Adjusting bolt; 81: Adjusting nut;

[0051] 9: Arm; 91: Hinge rod;

[0052] 10: Frame; 101: Landing gear. Detailed Implementation

[0053] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0055] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] See Figures 1 to 3 This utility model provides an anti-loosening connector, which includes a first fixing buckle 1, a U-shaped buckle 2, a rotating shaft 3, a first handle 4, a mounting base 5, a second handle 6, and a second fixing buckle 7. The first fixing buckle 1, the mounting base 5, and the second fixing buckle 7 are arranged sequentially along a first direction. The inner side of the closed end of the U-shaped buckle 2 is engaged with the first fixing buckle 1, and a pair of rods at the open end of the U-shaped buckle 2 are perpendicularly connected to the rotating shaft 3. The rotating shaft 3 is rotatably connected to the first handle 4. The mounting base 5 is disposed on the inner side of the U-shaped buckle 2. The first end of the first handle 4 is hinged to the mounting base 5, and the tail end is elastically hinged to the second handle 6, which is also the hand-held end. The second handle 6 is engaged with the second fixing buckle 7.

[0058] The first fixing buckle 1, the mounting base, and the second fixing buckle 7 are arranged sequentially along a first direction, which is... Figure 1 The left and right directions are shown. In this embodiment, the first fixing buckle 1, the mounting base 5, and the second fixing buckle 7 are fixed on the same horizontal plane, forming three limiting fulcrums. Compared with the traditional limiting structure of two fulcrums (i.e., hinge shaft and buckle), the limiting strength of the anti-loosening connector of this utility model is higher and its adaptability to heavy-load UAVs is stronger.

[0059] Figure 1The diagram shows the anti-loosening connector in the locked state. In this state, the U-shaped buckle 2 engages with the first fixing buckle 1, the second handle 6 engages with the second fixing buckle 7, and the tail end of the first handle 4 is elastically hinged to the second handle 6. Specifically, the elastic hinge structure allows the second handle 6 to be securely engaged with the second fixing buckle 7, thereby limiting the rotation of the first handle 4 around the adjusting bolt 8. This fixes the first handle 4 by securing the second handle 6, thus ensuring the stability of the engagement between the first fixing buckle 1 and the U-shaped buckle 2. On the one hand, the components of the anti-loosening connector are tightly connected. The first fixing buckle 1, the mounting base 5, and the second fixing buckle 7 act as three limiting fulcrums to fix the bottom connecting components of the three components, ensuring the connection strength between the arm and the frame of the UAV during flight and preventing the arm and frame from loosening. On the other hand, when unlocking is required, the operator holds the first handle 4 and the second handle 6, with their index and middle fingers positioned below the second handle 6. Pressing upwards with the index and middle fingers brings the second handle 6 closer to the first handle 4, unlocking the second handle 6 from the second fixing buckle 7. At this point, the first handle 4 can be rotated counterclockwise around the adjusting bolt 8, disengaging the closed end of the U-shaped buckle 2 from the first fixing buckle 1, thus unlocking the U-shaped buckle 2 from the first fixing buckle 1 and separating the components connected to the first fixing buckle 1 from those connected to the second fixing buckle 7. Compared to traditional buckle structures, manually pressing the elastically hinged second handle 6 requires less effort and eliminates the need to remove bolts from the buckle, improving the convenience of manual operation.

[0060] Furthermore, the first fixing buckle 1 includes a hook plate, a vertical plate, and a fixing plate connected in a T-shape; the hook plate is located on the side of the vertical plate opposite to the first handle 4; the corner at the connection between the hook plate and the vertical plate faces downwards, so that the closed end of the U-shaped buckle 2 engages with the corner. Specifically, the hook plate is tilted downwards at a preset angle, making it difficult for the closed end of the U-shaped buckle 2 to come off horizontally from the corner of the first fixing buckle 1, effectively ensuring the engagement strength between the first fixing buckle 1 and the U-shaped buckle 2. When unlocking, the first handle 4 rotates counterclockwise around the adjusting bolt 8, causing the closed end of the U-shaped buckle 2 to tilt downwards. At this time, the U-shaped buckle 2 can be manually turned to rotate clockwise around the pivot 3, completing the disengagement of the first fixing buckle 1 from the U-shaped buckle 2. This is convenient for disassembly and assembly and easy for manual operation.

[0061] like Figure 4As shown, the mounting base 5 is provided with an adjusting bolt 8 and an adjusting nut 81; the first end of the first handle 4 is constructed as a pair of ear plates 41; the mounting base 5 is engaged with the inner side of the pair of ear plates 41; the adjusting bolt 8 passes through the mounting base 5 and the pair of ear plates 41 and is screwed to the adjusting nut 81. In this embodiment, the mounting base 5 is also an ear plate structure, and the mounting base 5 is engaged with the inner side of the pair of ear plates 41. At the same time, the nut of the adjusting bolt 8 and the adjusting nut 81 are located on the outer side of the pair of ear plates 41. Tightening the adjusting nut 81 can adjust the tightness of the adjusting bolt 8, which can correspondingly adjust the frictional resistance of the first handle 4 rotating on the mounting base 5. According to the actual limit strength requirements, the tightness of the adjusting bolt 8 and the adjusting nut 81 is reasonably set so that the first handle 4 is not easy to rotate around the mounting base 5 in the locked state, while the first handle 4 can be manually rotated around the mounting base 5 to complete the unlocking. For heavy-duty drones with greater weight, the adjusting bolt 8 and adjusting nut 81 should be connected more tightly so that the adjusting bolt 8 and adjusting nut 81 can share part of the force on the second fixing buckle 7 and improve the overall limiting strength.

[0062] In addition, the first handle 4 has an internal clearance groove 42; the second handle 6 can move within the clearance groove 42. The clearance groove 42 effectively shortens the distance between the first handle 4 and the second handle 6, allowing a person to hold and operate with one hand, thus improving the convenience of manual operation.

[0063] See Figure 5 and Figure 6 The second handle 6 includes a torsion spring (not shown), a hinge shaft (not shown), a pair of arc-shaped plates 61, and an S-shaped hook 62, a connecting plate 63, and a pressure plate 64. The pair of arc-shaped plates 61 are arranged parallel to each other on the side of the connecting plate 63 facing the rotating shaft 3. The hinge shaft is arranged perpendicularly on the pair of arc-shaped plates 61. The torsion spring is arranged between the pair of arc-shaped plates 61 and sleeved on the hinge shaft. The first handle 4 and the pair of arc-shaped plates 61 are elastically hinged through the hinge shaft and the torsion spring. The hook 62 is engaged with the second fixing buckle 7. Specifically, the pressure plate 64 and the hand-held end of the first handle 4 are both arranged along the first direction and tilted upward at a preset angle for easy manual gripping. A torsion spring is positioned between a pair of arc-shaped plates 61, with its two ends corresponding to the connecting plate 63 and the clearance groove 42. This allows the first handle 4 to apply an elastic force to the second handle 6, causing the second handle 6 to rotate clockwise around the hinge axis. This enhances the stability of the engagement between the second handle 6 and the second fixing buckle 7, achieving an elastic hinge between them. In this embodiment, the second fixing buckle 7 is arched, with both ends fixed by screws and a raised center. The barb 62 can engage with the center of the second fixing buckle 7. Because the center of the second fixing buckle 7 is hollow, when the second handle 6 is rotated counterclockwise to unlock, the barb 6 easily separates from the second fixing buckle 7, requiring only overcoming the elastic force of the torsion spring. This reduces the difficulty of manual operation and makes the operation more labor-saving.

[0064] Optionally, the outer wall of the arc-shaped plate 61 abuts against the wall of the clearance groove 42. The surface-to-surface contact enhances the frictional resistance and limiting strength of the two, ensuring that the second handle 6 will not easily rotate counterclockwise or move axially along the hinge axis when locked.

[0065] Optionally, the curved surface of the curved plate 61 abuts against the wall of the clearance groove 42. The curved surface abuts against the sliding structure, which reduces the frictional resistance when the second handle 6 is unlocked counterclockwise, makes it easier to move manually, and improves the convenience of manual operation.

[0066] In addition, this utility model also provides a drone, which includes the anti-loosening connector as described above; see also Figure 7 and Figure 8 The drone also includes an arm 9 and a frame 10. One end of the arm 9 and the frame 10 are hinged together by a hinge rod 91, and the other end is detachably connected by an anti-loosening connector. A first fixing buckle 1 is provided on the arm 9. A mounting base 5 and a second fixing buckle 7 are both provided on the frame 10. Specifically, the joint between the arm 9 and the frame 10 is a joint of two opposing tubes. In the locked state, the joint between the arm 9 and the frame 10 is sealed, providing waterproof and dustproof protection. In the unlocked state, the arm 9 can rotate downwards around the hinge rod 91, allowing the arm 9 to fold relative to the frame 10, reducing the space occupied by the drone and facilitating transportation. In this embodiment, the first fixing buckle 1 is welded to the outer wall of the arm 9, the mounting base 5 is welded to the frame 10, and the second fixing buckle 7 is detachably connected to the frame 10 by bolts. By replacing different models of the second fixing buckle 7, the locking force between the second fixing buckle 7 and the second handle 6 can be adjusted to adapt to different heavy-load requirements of the drone.

[0067] like Figure 9 and Figure 10As shown, the drone includes multiple arms 9 hinged to the frame 10. Arms 9 located at corners of the frame 10 have anti-loosening connectors on their top surfaces and hinge rods 91 on their bottom surfaces, allowing the arms 9 to swing vertically after the anti-loosening connectors are unlocked. Arms 9 located in the middle of the frame 10 have anti-loosening connectors on their left side surfaces and hinge rods 91 on their right side surfaces, allowing the arms 9 to swing horizontally after the anti-loosening connectors are unlocked. In this embodiment, the drone is a hexagonal drone, with six arms 9 arranged circumferentially around the frame 10. In the deployed state, the six arms 9 are at the same horizontal height. In the folded state, the four corner arms 9 of the frame 10 fold downwards, while the two arms 9 in the middle of the frame 10 fold horizontally, effectively reducing the space occupied by the drone. Furthermore, when folding horizontally, the two arms 9 in the middle of the frame 10 will not affect the pair of landing gears 101 below the frame 10, facilitating the external setup to cooperate with the landing gears 101 for drone handling and improving the reliability of transporting multi-wing drones when folded.

[0068] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. An anti-loosening connector, characterized in that, The anti-loosening connector includes a first fixing buckle (1), a U-shaped buckle (2), a rotating shaft (3), a first handle (4), a mounting base (5), a second handle (6), and a second fixing buckle (7); The first fixing buckle (1), the mounting base (5), and the second fixing buckle (7) are arranged sequentially along the first direction; the inner side of the closed end of the U-shaped buckle (2) is engaged with the first fixing buckle (1), and a pair of rods at the open end of the U-shaped buckle (2) are vertically connected to the rotating shaft (3); the rotating shaft (3) is rotatably connected to the first handle (4); the mounting base (5) is located on the inner side of the U-shaped buckle (2); the first end of the first handle (4) is hinged to the mounting base (5), and the tail end is elastically hinged to the second handle (6); the second handle (6) is engaged with the second fixing buckle (7).

2. The anti-loosening connector according to claim 1, characterized in that, The first fixing buckle (1) includes a hook plate, a vertical plate and a fixing plate connected in a T-shape; The hook plate is disposed on the side of the vertical plate opposite to the first handle (4); The corner at the connection between the hook plate and the vertical plate faces downwards, so that the closed end of the U-shaped buckle (2) engages with the corner.

3. The anti-loosening connector according to claim 1, characterized in that, The mounting base (5) is provided with adjusting bolts (8) and adjusting nuts (81); The first handle (4) has a pair of ear plates (41) at its head end; the mounting base (5) engages with the inner side of the pair of ear plates (41); The adjusting bolt (8) passes through the mounting base (5) and a pair of ear plates (41) and is screwed into the adjusting nut (81).

4. The anti-loosening connector according to any one of claims 1-3, characterized in that, The first handle (4) has an internal clearance groove (42); the second handle (6) can move within the clearance groove (42).

5. The anti-loosening connector according to claim 4, characterized in that, The second handle (6) includes a torsion spring, a hinge shaft, a pair of arc plates (61), and an S-shaped hook (62), a connecting plate (63), and a pressure plate (64); A pair of arc-shaped plates (61) are arranged parallel to each other on the side of the connecting plate (63) facing the rotating shaft (3); the hinge shaft is arranged vertically on the pair of arc-shaped plates (61); the torsion spring is arranged between the pair of arc-shaped plates (61) and sleeved on the hinge shaft; the first handle (4) is elastically hinged to the pair of arc-shaped plates (61) through the hinge shaft and the torsion spring; The barb (62) engages with the second fixing buckle (7).

6. The anti-loosening connector according to claim 5, characterized in that, The outer wall of the arc-shaped plate (61) abuts against the wall of the clearance groove (42).

7. The anti-loosening connector according to claim 5, characterized in that, The arc-shaped surface of the arc plate (61) abuts against the wall of the clearance groove (42).

8. A drone, characterized in that, The drone includes the anti-loosening connector as described in any one of claims 1-7; the drone also includes an arm (9) and a frame (10); The arm (9) is hinged to one end face of the frame (10) via a hinge rod (91), and the other end face is detachably connected via the anti-loosening connector; The first fixing buckle (1) is disposed on the arm (9); the mounting base (5) and the second fixing buckle (7) are both disposed on the frame (10).

9. The UAV according to claim 8, characterized in that, The drone includes multiple arms (9) hinged to the frame (10); The machine arm (9) located at the corner of the frame (10) has an anti-loosening connector on its top surface and a hinge rod (91) on its bottom surface, so that the machine arm (9) can swing vertically after the anti-loosening connector is unlocked. The arm (9) is located in the middle of the frame (10). The anti-loosening connector is provided on the left side of the arm (9), and the hinge rod (91) is provided on the right side of the frame (10) so that the arm (9) can swing in the horizontal direction after the anti-loosening connector is unlocked.

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