A buffer structure for drone

Abstract

The present invention relates to the field of drone technology, and in particular to a buffer structure for a drone, comprising a drone body, wherein oil chambers are provided at the four corners below the drone body, oil nozzles are provided above the four oil chambers, and an oil pump is provided inside the drone body, the oil pump being connected to the four oil nozzles via oil pipes. The advantages of the present invention are that oil chambers are provided at the four corners below the drone body, piston rods are slidably connected inside the four oil chambers, first springs are provided below the four piston rods, and oil nozzles are provided above the four oil chambers. During use, the oil pump inside the drone body is connected to the four oil nozzles. During the falling process of the drone body, a distance measuring device below it measures the distance from the ground. According to the decrease in distance, the oil pump fills or draws oil into the oil chamber, causing the piston rod to move, thereby absorbing the impact force generated during the falling process and reducing the shaking of the drone body.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a buffer structure of an UAV. Background Art

[0002] Currently, the applications of drones in aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, creating romance, etc. have greatly expanded the uses of drones themselves. Developed countries are also actively expanding industry applications and developing drone technology.

[0003] Drones are often used to conduct reconnaissance in places that people cannot reach in person, providing great convenience for our lives. However, the problems with existing technologies are: most drones now use spring shock absorption or do not have a shock absorption mechanism. When using spring shock absorption, rebound will occur, causing the drone to bounce again, making it less effective in absorbing impact force. Without a shock absorption mechanism, the impact generated by the descent can easily cause damage to the body, affecting the normal operation of the drone. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a buffer structure for a drone, which effectively solves the shortcomings of the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present invention provides a buffer structure of a drone, including a drone body, oil chambers are opened at the four corners below the drone body, and oil nozzles are provided above the four oil chambers. An oil pump is provided inside the drone body, and the oil pump is connected to the four oil nozzles through an oil pipe. The interiors of the four oil chambers are slidably connected to piston rods, and the outsides of the four piston rods are each sleeved with a first spring. A mounting plate is provided below the four piston rods, and a support plate is provided below the four mounting plates. The overall shape of the four support plates is T-shaped, and the four support plates respectively pass through the four mounting plates, and a second spring is provided between the two. One end of the top surface of the four mounting plates is fixedly connected to a spring plate, and the four spring plates are respectively overlapped with the four support plates. A ranging device is provided below the drone body.

[0006] Preferably, any of the above solutions has a placement cavity formed in the middle of the bottom surface of the drone body, and the oil pump is located inside the placement cavity.

[0007] Preferably, any of the above solutions is that a cover is provided outside the placement cavity, the distance measuring device is located on the bottom surface of the cover, and wire holes are provided on both sides of the bottom surface of the cover.

[0008] Preferably, any of the above schemes is that through holes are provided on all four sides of the inner wall of the placement cavity, a sealing cap is provided on the outside of the through hole, and a hexagonal groove is provided on the outer surface of the sealing cap. By using this scheme, the through hole can be sealed by the sealing cap to prevent dust from entering the placement cavity.

[0009] Preferably, any of the above schemes is that the top walls of the four oil chambers are provided with mounting holes, and the four oil nozzles are respectively located inside the four mounting holes.

[0010] Preferably, any of the above schemes is that a guide rod is fixedly connected to one side of the top surface of the four support plates, and a guide groove is provided at the outer end of the top surface of the four mounting plates. The four guide rods respectively pass through the four guide grooves, and the two are slidably connected. By using this scheme, the movement of the support plate can be guided.

[0011] Preferably, according to any of the above solutions, the four second springs are respectively sleeved on the outside of the four guide rods.

[0012] Preferably, from any of the above solutions, the four spring plates are all L-shaped, are inclined upward, and the angle between the four spring plates and the mounting plate is less than ninety degrees.

[0013] Preferably, one side of the outer surface of each of the four guide rods is provided with a plurality of slots, and the four spring plates are respectively overlapped with the four groups of slots. By using this solution, the position of the support plate can be fixed by the spring plates.

[0014] Preferably, any of the above solutions is provided with a sealing ring above the outside of the four piston rods.

[0015] The present invention has the following advantages:

[0016] 1. The buffer structure of the drone has oil chambers at the four corners below the drone body. The inside of the four oil chambers is slidably connected to a piston rod. A first spring is sleeved under the four piston rods. Oil nozzles are provided above the four oil chambers. During use, the oil pump in the drone body is connected to the four oil nozzles. When the drone body falls, the ranging equipment below it measures the distance to the ground. According to the decrease in distance, the oil pump fills or draws oil into the oil chamber, causing the piston rod to move to absorb the impact force generated during the fall and reduce the shaking of the drone body.

[0017] 2. The buffer structure of the drone is equipped with a mounting plate under the four piston rods, and a support plate is provided under the mounting plate. A guide rod is fixedly connected to one side of the top surface of the support plate. The guide rod passes through the mounting plate, and a second spring is sleeved on the outside of the guide rod. When the drone body falls, the support plate contacts the ground, compressing the second spring to absorb vibration and impact force for a second time. In order to prevent the second spring from rebounding, the spring plate on the mounting plate overlaps the slot on the guide rod to fix the position of the guide rod, which can prevent the second spring from rebounding and meet the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective;

[0019] Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention;

[0020] Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram from the first perspective;

[0021] Figure 4 For the present invention Figure 1 A schematic cross-sectional structural diagram from a second viewing angle;

[0022] Figure 5 Schematic diagram of the structure of the drone body in the present invention;

[0023] Figure 6 Schematic diagram of the internal structure of the drone body in the present invention;

[0024] Figure 7 Schematic diagram of the structure of the support plate in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the mounting plate in the present invention.

[0026] In the figure: 1-UAV body, 2-support plate, 3-mounting plate, 4-second spring, 5-sealing cap, 6-oil nozzle, 7-sealing cover, 8-distance measuring device, 9-wire hole, 10-first spring, 11-piston rod, 12-sealing ring, 13-oil pump, 14-placement chamber, 15-through hole, 16-oil chamber, 17-mounting hole, 18-guide rod, 19-slot, 20-spring plate, 21-guide groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0028] like Figures 1 to 8As shown, a buffer structure of a drone includes a drone body 1, oil chambers 16 are opened at the four corners below the drone body 1, and oil nozzles 6 are provided above the four oil chambers 16. An oil pump 13 is provided inside the drone body 1, and the oil pump 13 is connected to the four oil nozzles 6 through an oil pipe. The interiors of the four oil chambers 16 are slidably connected to piston rods 11, and the outsides of the four piston rods 11 are sleeved with first springs 10. Mounting plates 3 are provided below the four piston rods 11, and support plates 2 are provided below the four mounting plates 3. The overall shape of the four support plates 2 is T-shaped, and the four support plates 2 respectively pass through the four mounting plates 3, and a second spring 4 is provided between the two. One end of the top surface of the four mounting plates 3 is fixedly connected to a spring plate 20, and the four spring plates 20 are respectively overlapped with the four support plates 2. A ranging device 8 is provided below the drone body 1.

[0029] A placement cavity 14 is formed in the middle of the bottom surface of the drone body 1 , and the oil pump 13 is located inside the placement cavity 14 . As an optional technical solution of the present invention, it is convenient to install the oil pump 13 .

[0030] A cover 7 is provided on the outside of the placement cavity 14, and the ranging device 8 is located on the bottom surface of the cover 7. Wire holes 9 are provided on both sides of the bottom surface of the cover 7. As an optional technical solution of the present invention, the setting of the wire holes 9 facilitates the wiring of the device.

[0031] Through holes 15 are provided around the inner wall of the placement cavity 14 , and a sealing cap 5 is provided on the outside of the through hole 15 , and a hexagonal groove is provided on the outer surface of the sealing cap 5 .

[0032] The top walls of the four oil chambers 16 are provided with mounting holes 17 , and the four oil nozzles 6 are respectively located inside the four mounting holes 17 . As an optional technical solution of the present invention, when installing the oil nozzles 6 , it is necessary to ensure good sealing between them and the mounting holes 17 .

[0033] A guide rod 18 is fixedly connected to one side of the top surface of the four support plates 2, and a guide groove 21 is provided at the outer end of the top surface of the four mounting plates 3. The four guide rods 18 pass through the four guide grooves 21 respectively, and the two are slidably connected. As an optional technical solution of the present invention, the size of the guide rod 18 is adapted to the size of the guide groove 21 to avoid shaking of the support plate 2.

[0034] The four second springs 4 are respectively sleeved on the outside of the four guide rods 18 .

[0035] The four spring plates 20 are all L-shaped, and the four spring plates 20 are all tilted upward, and the angle between them and the mounting plate 3 is less than ninety degrees. One side of the outer surface of the four guide rods 18 is provided with multiple slots 19, and the four spring plates 20 are respectively overlapped with the four groups of slots 19. As an optional technical solution of the present invention, the outer end of the spring plate 20 can be arc-shaped to achieve smooth up and down movement of the guide rod 18, and the spring plate 20 can limit the guide rod 18.

[0036] A sealing ring 12 is provided above the outside of each of the four piston rods 11 .

[0037] The features, assembly methods, usage processes and functions realized by each component in the present invention are as follows: oil chambers 16 are opened at the four corners below the drone body 1, and the interiors of the four oil chambers 16 are slidably connected to piston rods 11. A first spring 10 is sleeved below the four piston rods 11, and an oil nozzle 6 is provided above the four oil chambers 16. During use, the oil pump 13 in the drone body 1 is connected to the four oil nozzles 6. During the falling process of the drone body 1, the ranging device 8 below it measures the distance from the ground. According to the decrease in distance, the oil pump 13 injects or extracts oil into the oil chamber 16, causing the piston rod 11 to move to absorb the falling In order to reduce the impact force generated during the process and reduce the shaking of the drone body 1, a mounting plate 3 is installed under the four piston rods 11, and a support plate 2 is provided under the mounting plate 3. A guide rod 18 is fixedly connected to one side of the top surface of the support plate 2. The guide rod 18 passes through the mounting plate 2, and a second spring 4 is sleeved on the outside of the guide rod 18. When the drone body 1 falls, the support plate 2 contacts the ground, compressing the second spring 4 to absorb vibration and impact force for a second time. In order to prevent the second spring 4 from rebounding, the spring plate 20 on the mounting plate 3 overlaps the card slot 19 on the guide rod 18 to fix the position of the guide rod 18, which can prevent the second spring 4 from rebounding and meet the needs of use.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A buffer structure for an unmanned aerial vehicle, characterized by: The invention comprises an unmanned aerial vehicle (UAV) body (1), wherein oil chambers (16) are provided at four corners below the UAV body (1), oil nozzles (6) are provided above the four oil chambers (16), an oil pump (13) is provided inside the UAV body (1), the oil pump (13) is connected to the four oil nozzles (6) through an oil pipe, piston rods (11) are slidably connected inside the four oil chambers (16), the outsides of the four piston rods (11) are sleeved with first springs (10), and the bottoms of the four piston rods (11) are provided with oil pumps (13). Each of the four mounting plates (3) is provided with a mounting plate (3), and a support plate (2) is provided below each of the four mounting plates (3). The overall shape of the four support plates (2) is T-shaped. The four support plates (2) respectively penetrate the four mounting plates (3), and a second spring (4) is provided between the two. One end of the top surface of the four mounting plates (3) is fixedly connected with a spring plate (20), and the four spring plates (20) are respectively overlapped with the four support plates (2). A distance measuring device (8) is provided below the drone body (1).

2. The buffer structure of a drone according to claim 1, characterized in that: A placement cavity (14) is formed inwardly in the middle of the bottom surface of the drone body (1), and the oil pump (13) is located inside the placement cavity (14).

3. The buffer structure of a drone according to claim 2, characterized in that: A cover (7) is provided outside the placement cavity (14), the distance measuring device (8) is located on the bottom surface of the cover (7), and wire holes (9) are provided on both sides of the bottom surface of the cover (7).

4. The buffer structure of a drone according to claim 3, characterized in that: Through holes (15) are provided on all four sides of the inner wall of the placement cavity (14), a sealing cap (5) is provided on the outside of the through hole (15), and a hexagonal groove is provided on the outer surface of the sealing cap (5).

5. The buffer structure of a drone according to claim 4, characterized in that: The top walls of the four oil chambers (16) are provided with mounting holes (17), and the four oil nozzles (6) are respectively located inside the four mounting holes (17).

6. The buffer structure of a drone according to claim 5, characterized in that: One side of the top surface of each of the four support plates (2) is fixedly connected with a guide rod (18), and the outer ends of the top surfaces of the four mounting plates (3) are provided with a guide groove (21), and the four guide rods (18) respectively pass through the four guide grooves (21), and the two are slidably connected.

7. The buffer structure of a drone according to claim 6, characterized in that: The four second springs (4) are respectively sleeved on the outside of the four guide rods (18).

8. The buffer structure of a drone according to claim 7, characterized in that: The four spring plates (20) are all L-shaped, and the four spring plates (20) are all inclined upward, and the angle between them and the mounting plate (3) is less than ninety degrees.

9. The buffer structure of a drone according to claim 8, characterized in that: One side of the outer surface of each of the four guide rods (18) is provided with a plurality of slots (19), and the four spring plates (20) are respectively overlapped with the four groups of slots (19).

10. The buffer structure of a drone according to claim 9, characterized in that: A sealing ring (12) is provided above the outside of each of the four piston rods (11).

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