Anti-collision device of unmanned aerial vehicle

Abstract

The utility model discloses an anti-collision device of an unmanned aerial vehicle, and relates to the field of unmanned aerial vehicles, the anti-collision device comprises an unmanned aerial vehicle main body, four unmanned aerial vehicle arms which are symmetrical in pairs are mounted on the unmanned aerial vehicle main body, driving motors are mounted on the unmanned aerial vehicle arms, fan blades are fixed to the output ends of the driving motors, and a plurality of protective net covers are circumferentially distributed on the peripheries of the fan blades; supporting rods are fixed to the protective net cover, adjusting assemblies are arranged between the multiple supporting rods and the unmanned aerial vehicle arm, and fixing assemblies are arranged between the adjusting assemblies and the unmanned aerial vehicle arm. The sizes of the adjacent protective net covers are adjusted through the adjusting assemblies, the protective net covers are made to adapt to the sizes of the fan blades, then the protective net covers are fixed to the unmanned aerial vehicle arms through the fixing assemblies, and therefore the possibility that the fan blades on the unmanned aerial vehicle body make contact with obstacles and are damaged can be reduced, and meanwhile the distance between the net covers can be adjusted; and fan blades with different sizes can be conveniently used.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicles (UAVs), and in particular to a collision avoidance device for UAVs. Background Technology

[0002] A drone's structure generally consists of a frame, arms, landing gear, drive motors, propellers, and a control system. Batteries that provide power to the drive motors are installed and fixed in the frame. When the drone takes off, the batteries power the drive motors, which in turn drive the propellers, propelling the entire drone into the air.

[0003] The propellers of small drones are usually open and located directly at the outermost end of the arm. In order to protect the propellers and reduce the damage caused by collisions when the drone hits obstacles on the ground, a protective cover is usually installed on the arm to prevent collisions.

[0004] In actual use, the protective cover on the drone is usually added later. The protective cover can only protect the propeller of the corresponding size. When replacing the propeller with a different size or moving the protective cover to another drone, the size of the protective cover may not match the propeller. Utility Model Content

[0005] The purpose of this application is to address the problem mentioned in the background art that the protective covers on drones are generally added later, and the protective covers can only protect propellers of a corresponding size. When replacing propellers of different sizes or moving the protective covers to other drones, the size of the protective covers may not match the propellers. This application provides a collision avoidance device for drones.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A drone and a collision avoidance device include a drone body with four symmetrically arranged drone arms mounted on the drone body. Each drone arm is equipped with a drive motor, and the output end of the drive motor is fixed with a fan blade.

[0008] By adopting the above technical solution, when the drone is in use, the battery built into the drone body provides power to the drive motor installed on the drone arm, which drives the fan blades to rotate. The fan blades generate a thrust downwards on the drone body, and the drone body is lifted by the push of the fan blades.

[0009] A collision avoidance device for a drone includes several protective net covers circumferentially distributed around the fan blades, with support rods fixed on the protective net covers, an adjustment component between the support rods and the drone arm, and a fixing component between the adjustment component and the drone arm.

[0010] By adopting the above technical solution, the size of adjacent protective net covers can be adjusted using adjustment components to adapt the protective net covers to the size of the fan blades. Then, the protective net covers can be fixed to the drone arm using fixing components. This reduces the possibility of damage caused by the fan blades on the drone body coming into contact with obstacles. At the same time, the spacing between the protective net covers can be adjusted to facilitate the use of fan blades of different sizes.

[0011] Furthermore, the adjustment assembly includes a support block mounted on the drone arm, a plurality of adjustment rods 1 fixed on the support block, and adjustment rods 2 slidably connected to the adjustment rods 1.

[0012] By adopting the above technical solution, when the second adjusting rod slides on the first adjusting rod, it drives the protective net cover on the support rod, thereby adjusting the distance of the protective net cover, which is convenient for using fan blades of different sizes and for use on different drones.

[0013] Furthermore, a rotating block is rotatably connected to the support block, and several arc-shaped slide rails are fixed on the rotating block. Sliding blocks are slidably connected to the arc-shaped slide rails, and the sliding blocks are fixedly connected to the adjusting rod.

[0014] By adopting the above technical solution, the rotating block drives the arc-shaped slide rail, allowing the sliding block to move along the adjusting rod 1 under the constraint of the arc-shaped slide rail and the adjusting rod 2, thereby facilitating the movement of several adjusting rods 2 on the adjusting rod 1.

[0015] Furthermore, a limit bolt is threaded onto the support block, and the limit bolt passes through the rotating block.

[0016] By adopting the above technical solution, the limiting bolt is used to keep the rotating block stable. When it is necessary to rotate the rotating block, the limiting bolt is rotated to release the limitation of the limiting bolt on the rotating block, so that after the adjustment is completed, the rotating block can be kept in a non-rotating state.

[0017] Furthermore, an auxiliary support leg is fixed to the end of the limiting bolt away from the support block.

[0018] By adopting the above technical solution, auxiliary support legs are fixed on the limiting bolts. When the main body of the drone lands on the ground, the auxiliary support legs provide further support, thereby further improving the stability of the drone's landing.

[0019] Furthermore, the fixing component includes a fixing rod fixed to the support block, a fixing block fixed to the fixing rod, two symmetrical clamping blocks slidably connected to the fixing block, the drone arm located between the two clamping blocks, and a bidirectional threaded rod rotatably connected to the fixing block, the bidirectional threaded rod passing through the two clamping blocks and threadedly connected to the two clamping blocks.

[0020] By adopting the above technical solution, rotating the bidirectional threaded rod allows the two clamping blocks to move on the fixed block and clamp onto the drone arm, thus making it easy to install the protective net on the drone arm and to remove it when it is not needed.

[0021] Furthermore, a clamping inclined block is fixed to one end of each of the two clamping blocks away from the fixed block. The clamping inclined block has an inclined surface that corresponds to the UAV arm.

[0022] By adopting the above technical solution, the clamping inclined blocks on the two clamping blocks are fastened to the drone arm. Under the action of the inclined surface of the clamping inclined blocks, the fixing blocks and fixing rods are made to fit tightly against the bottom of the drone arm, thereby enabling the fixing blocks and fixing rods to fit tightly against the drone arm and maintain the stability of the fixation.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. In this application, by tightening the limiting bolt, the rotating block can rotate normally on the support block. When the rotating block rotates, it drives the arc-shaped slide rail. When the arc-shaped slide rail moves, it drives the sliding block. The sliding block moves under the restriction of the arc-shaped slide rail and the second adjusting rod. Then the sliding block drives the second adjusting rod, which slides on the first adjusting rod. The second adjusting rod drives the support rod, which drives the protective net cover. This allows several protective net covers to move simultaneously, so that the protection range of the protective net cover corresponds to the fan blade. This achieves the purpose of conveniently adjusting the distance between several protective net covers, and conveniently protecting fan blades of different models and sizes.

[0025] 2. In this application, by placing the support block below the drone arm and directly below the drive motor, and positioning the drone arm between two clamping blocks, and then having the fixing block and fixing rod adhere to the bottom of the drone arm, the bidirectional threaded rod is rotated to cause the two clamping blocks to clamp the drone arm. The clamping wedges on the two clamping blocks then engage with the drone arm. Under the action of the inclined surfaces of the clamping wedges, the fixing block and fixing rod are tightly attached to the bottom of the drone arm, thus completing the fixation between the support block and the drone arm. This achieves the purpose of conveniently installing the protective net cover on the drone arm and conveniently removing the protective net cover when it is not needed. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional structural schematic diagram of the unmanned aerial vehicle and collision avoidance device in this application;

[0027] Figure 2 This is a cross-sectional three-dimensional structural diagram of the drone and collision avoidance device in this application;

[0028] Figure 3 This application Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This application Figure 2 Enlarged diagram of point B in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Drone body; 2. Drone arm; 3. Drive motor; 4. Fan blade; 5. Protective net cover; 6. Support rod; 7. Adjustment assembly; 71. Support block; 72. Adjustment rod one; 73. Adjustment rod two; 74. Sliding block; 75. Arc-shaped slide rail; 76. Rotating block; 77. Limit bolt; 78. Auxiliary support leg; 8. Fixing assembly; 81. Fixing rod; 82. Fixing block; 83. Clamping block; 84. Two-way threaded rod; 85. Clamping inclined block. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.

[0033] This application discloses an unmanned aerial vehicle (UAV) and a collision avoidance device.

[0034] Reference Figure 1 , Figure 2 and Figure 3 A drone and a collision avoidance device, comprising a drone body 1, four drone arms 2 symmetrically arranged in pairs mounted on the drone body 1, a drive motor 3 mounted on the drone arm 2, and a fan blade 4 fixed to the output end of the drive motor 3.

[0035] When the drone is in use, the battery built into the drone body 1 provides power to the drive motor 3 installed on the drone arm 2, which drives the fan blade 4 to rotate. The fan blade 4 generates a thrust downwards on the drone body 1, and the drone body 1 is lifted by the push of the fan blade 4.

[0036] Reference Figure 1 , Figure 2 and Figure 3 It includes several protective net covers 5 distributed circumferentially around the fan blade 4, support rods 6 fixed on the protective net covers 5, adjustment components 7 between the support rods 6 and the drone arm 2, and fixing components 8 between the adjustment components 7 and the drone arm 2.

[0037] Before the drone body 1 takes off, the size of the adjacent protective net covers 5 is first adjusted using the adjustment component 7 to adapt the protective net covers 5 to the size of the fan blades 4. Then, the protective net covers 5 are fixed to the drone arm 2 using the fixing component 8, so that the protective net covers 5 correspond to the fan blades 4. When the drone takes off, the drone arm 2 drives the fixing component 8, the fixing component 8 drives the adjustment component 7, the adjustment component 7 drives several support rods 6, and the support rods 6 drive the protective net covers 5, so that the protective net covers 5 move together with the drone body 1. When the side of the drone body 1 approaches an obstacle, the protective net covers 5 directly contact the obstacle, preventing the fan blades 4 on the drone body 1 from continuing to approach the obstacle. By using the protective net covers 5 to protect the fan blades 4 on the drone body 1, the distance between several protective net covers 5 can be adjusted using the adjustment component 7, thereby reducing the possibility of damage caused by the fan blades 4 on the drone body 1 contacting the obstacle. At the same time, the distance between the net covers can be adjusted to facilitate the use of fan blades 4 of different sizes.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The adjustment component 7 includes a support block 71 mounted on the drone arm 2. Several adjustment rods 72 are fixed on the support block 71, and adjustment rods 73 are slidably connected to the adjustment rods 72.

[0039] In addition, a rotating block 76 is rotatably connected to the support block 71, and several arc-shaped slide rails 75 are fixed on the rotating block 76. Sliding blocks 74 are slidably connected to the arc-shaped slide rails 75, and the sliding blocks 74 are fixedly connected to the adjusting rod 73.

[0040] Furthermore, a limit bolt 77 is threaded onto the support block 71, and the limit bolt 77 passes through the rotating block 76.

[0041] Furthermore, an auxiliary support leg 78 is fixed to the end of the limiting bolt 77 that is away from the support block 71.

[0042] First, tighten the limit bolt 77 to allow the rotating block 76 to rotate normally on the support block 71. Then, when the rotating block 76 rotates, it drives the arc-shaped slide rail 75. As the arc-shaped slide rail 75 moves, it drives the sliding block 74. The sliding block 74 moves under the restriction of the arc-shaped slide rail 75 and the second adjusting rod 73. Then, the sliding block 74 drives the second adjusting rod 73, allowing the second adjusting rod 73 to slide on the first adjusting rod 72. Then, the second adjusting rod 73 drives the support rod 6, and the support rod 6 drives the protective net cover 5, allowing several protective net covers 5 to move simultaneously, so that the protection range of the protective net cover 5 corresponds to the fan blade 4. By allowing the rotating block 76 to rotate, the arc-shaped slide rail 75 drives the sliding block 74, which in turn drives the second adjusting rod 73. The second adjusting rod 73 then moves the protective net cover 5 on the support rod 6 closer to or further away from the support block 71, thus making it easy to adjust the distance between several protective net covers 5, so that the protective net cover 5 can protect fan blades 4 of different models and sizes.

[0043] Reference Figure 1 , Figure 2 and Figure 4 The fixing component 8 includes a fixing rod 81 fixed on the support block 71, a fixing block 82 fixed on the fixing rod 81, two symmetrical clamping blocks 83 slidably connected on the fixing block 82, the drone arm 2 located between the two clamping blocks 83, and a bidirectional threaded rod 84 rotatably connected on the fixing block 82, the bidirectional threaded rod 84 passing through the two clamping blocks 83 and threadedly connected to the two clamping blocks 83.

[0044] In addition, a clamping inclined block 85 is fixed to one end of the two clamping blocks 83 away from the fixed block 82. The clamping inclined block 85 has an inclined surface and corresponds to the drone arm 2.

[0045] First, position the support block 71 below the drone arm 2, directly below the drive motor 3, and position the drone arm 2 between the two clamping blocks 83. Then, place the fixing block 82 and the fixing rod 81 against the bottom of the drone arm 2. Next, rotate the bidirectional threaded rod 84, causing the two clamping blocks 83 to clamp the drone arm 2. Then, the clamping inclined blocks 85 on the two clamping blocks 83 are fastened onto the drone arm 2. Under the action of the inclined surface of the clamping inclined blocks 85, the fixing block 82 and the fixing rod 81 are pressed tightly against the bottom of the drone arm 2, completing the fixation between the support block 71 and the drone arm 2. By using the two clamping blocks 83 to drive the clamping inclined blocks 85 to clamp and fasten onto the drone arm 2, it is convenient to install the protective net cover 5 on the drone arm 2. When the protective net cover 5 is not needed, it is convenient to remove it.

[0046] Working principle: First, tighten the limit bolt 77 to allow the rotating block 76 to rotate normally on the support block 71. Then, as the rotating block 76 rotates, it drives the arc-shaped slide rail 75. As the arc-shaped slide rail 75 moves, it drives the sliding block 74. The sliding block 74 moves under the constraint of the arc-shaped slide rail 75 and the second adjusting rod 73. Then, the sliding block 74 drives the second adjusting rod 73, allowing the second adjusting rod 73 to slide on the first adjusting rod 72. Then, the second adjusting rod 73 drives the support rod 6, and the support rod 6 drives the protective net cover 5, causing several protective net covers 5 to move simultaneously, so that the protection range of the protective net cover 5 corresponds to the fan blade 4. Then, the support block 71 is positioned below the drone arm 2, directly below the drive motor 3, and the drone arm 2 is positioned between the two clamping blocks 83. Then, fix the fixing block 82 and fixing rod 81 against the lower part of the drone arm 2, and then rotate the bidirectional threaded rod 84 so that the bidirectional threaded rod 84 drives the two clamping blocks 83 to clamp the drone arm 2. Then, the clamping inclined blocks 85 on the two clamping blocks 83 are fastened to the drone arm 2. Under the action of the inclined surface of the clamping inclined block 85, the fixing block 82 and fixing rod 81 are pressed tightly against the bottom of the drone arm 2, completing the fixation between the support block 71 and the drone arm 2, and allowing the protective net cover 5 to protect the side of the fan blade 4. When the drone is in use, the battery built into the drone body 1 provides power to the drive motor 3 installed on the drone arm 2, so that the drive motor 3 drives the fan blade 4 to rotate. The fan blade 4 generates a thrust downward of the drone body 1, and under the push of the fan blade 4, the drone body 1 is raised.

Claims

1. A collision avoidance device for a drone, comprising a plurality of protective net covers (5) circumferentially distributed around the fan blades (4), characterized in that: The protective net cover (5) is fixed with a support rod (6), and an adjustment component (7) is provided between several of the support rods (6) and the drone arm (2), and a fixing component (8) is provided between the adjustment component (7) and the drone arm (2).

2. The anti-collision device for a drone according to claim 1, characterized in that: The adjustment component (7) includes a support block (71) set on the drone arm (2), and a plurality of adjustment rods (72) are fixed on the support block (71), and adjustment rods (73) are slidably connected to the adjustment rods (72).

3. The anti-collision device for a drone according to claim 2, characterized in that: A rotating block (76) is rotatably connected to the support block (71). Several arc-shaped slide rails (75) are fixed on the rotating block (76). A sliding block (74) is slidably connected to the arc-shaped slide rails (75). The sliding block (74) is fixedly connected to the adjusting rod (73).

4. The anti-collision device for a drone according to claim 3, characterized in that: The support block (71) is threaded with a limiting bolt (77), which passes through the rotating block (76).

5. The anti-collision device for a drone according to claim 4, characterized in that: An auxiliary support leg (78) is fixed to the end of the limiting bolt (77) away from the support block (71).

6. The anti-collision device for a drone according to claim 2, characterized in that: The fixing component (8) includes a fixing rod (81) fixed on a support block (71), a fixing block (82) fixed on the fixing rod (81), two symmetrical clamping blocks (83) slidably connected on the fixing block (82), the drone arm (2) is located between the two clamping blocks (83), a bidirectional threaded rod (84) is rotatably connected on the fixing block (82), the bidirectional threaded rod (84) passes through the two clamping blocks (83) and is threadedly connected to the two clamping blocks (83).

7. The anti-collision device for a drone according to claim 6, characterized in that: Two clamping blocks (83) are fixed with clamping inclined blocks (85) at one end away from the fixed block (82). The clamping inclined blocks (85) have inclined surfaces and correspond to the UAV arm (2).

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