WO2021043334A1

WO2021043334A1 - Unmanned aerial vehicle

Info

Publication number: WO2021043334A1
Application number: PCT/CN2020/123354
Authority: WO
Inventors: 梁智颖
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2019-09-03
Filing date: 2020-10-23
Publication date: 2021-03-11
Also published as: CN210653641U

Abstract

Provided is an unmanned aerial vehicle, comprising a framework (1), a housing component connected to the framework (1), rotation assemblies (3) provided on the framework (1), and arms (2) installed on the framework (1) by means of the rotation assemblies (3), the arms (2) are rotatably installed on the framework (1) by means of the rotation assemblies (3) with respect to the framework (1). According to the unmanned aerial vehicle, the provision of the arms (2) on the framework (1) increases the strength of the connection, reduces the vibration of the unmanned aerial vehicle, and reduces the interference to an IMU. The arms (2) are rotatable with respect to the framework (1) during the flight of the unmanned aerial vehicle, and when being disturbed by external wind, the arms can automatically rotate to resist the external disturbance so as to improve the flight stability.

Description

A kind of unmanned aerial vehicle

Technical field

The utility model relates to the technical field of aircraft, in particular to an unmanned aerial vehicle.

Background technique

With the development of science and technology, more and more unmanned aerial vehicles, especially unmanned aerial vehicles, enter people's lives and play more and more roles. The skeleton of the unmanned aerial vehicle in the prior art is a prefabricated skeleton mainly used to strengthen the strength of the body, and its resonance frequency is relatively high. Since the arm of the drone is usually connected to the shell, the motor driving the propeller will vibrate during operation. The vibration can easily cause the shell and skeleton to vibrate, causing the drone to produce greater vibrations, resulting in unstable flight of the drone. And, when the vibration is large, it will cause interference to the IMU (Inertial Measurement Unit).

Therefore, there is an urgent need for an unmanned aerial vehicle to solve the above technical problems.

Utility model content

The purpose of the utility model is to provide an unmanned aerial vehicle, which can reduce the vibration of the unmanned aerial vehicle, reduce the interference to the IMU (Inertial Measurement Unit), and improve the flight stability.

To achieve this purpose, the utility model adopts the following technical solutions:

An unmanned aerial vehicle, comprising: a skeleton, a shell component connected to the skeleton, a rotating component provided on the skeleton, and a machine arm installed on the skeleton through the rotating component, the machine arm passing through the The rotating assembly can be rotatably installed on the skeleton relative to the skeleton.

Optionally, the rotating assembly includes a rotating part and a base, the rotating part is arranged on the base, the base is fixedly arranged on the skeleton, and the arm is connected to the rotating part.

Optionally, one end of the arm is provided with a first positioning hole, and the arm is sleeved on the rotating part through the first positioning hole.

Optionally, the rotating part includes a rotating shell and a rotating core, the rotating shell is sleeved on the rotating core, the rotating core is fixedly connected to the base, and the rotating shell can rotate around the core of the rotating core. The axis rotates, and the first positioning hole of the arm is sleeved on the rotating housing.

Optionally, the cross section of the rotating housing is square, and the first positioning hole is a square hole.

Optionally, the skeleton includes a skeleton body and a machine arm mounting seat, the machine arm mounting seat is fixedly connected to the skeleton body, and the base is fixedly arranged on the machine arm mounting seat.

Optionally, the arm mounting base includes a first part, a second part, and a third part connected in sequence, the first part and the third part are arranged in parallel and spaced apart, and the first part and the second part Both the second part and the third part are fixedly connected with the skeleton body, and the base is fixedly arranged on the first part.

Optionally, the first part is provided with a second positioning hole, the rotating part passes through the second positioning hole and is located between the first part and the third part, and the base is connected to the The side of the first part facing away from the third part is fixedly connected.

Optionally, the housing assembly includes a first half shell and a second half shell, the first half shell and the second half shell are buckled to form an accommodating cavity, and the skeleton is located in the accommodating cavity, And it is fixedly connected with the first half shell.

Optionally, the skeleton is integrally formed, and the material of the skeleton is a magnesium alloy.

The beneficial effects of the utility model:

In the drone provided by the utility model, the arm is arranged on the frame, which improves the strength of the connection, reduces the vibration of the drone, and reduces the interference to the IMU (Inertial Measurement Unit); at the same time, the arm can be relative to the frame Rotation, when the drone is flying, when the arm is disturbed by the external wind, it can automatically rotate to resist the external disturbance and improve the flight stability.

Description of the drawings

Figure 1 is an overall view of an unmanned aerial vehicle of the present utility model;

Figure 2 is an exploded view of an unmanned aerial vehicle of the present utility model;

Figure 3 is a partial enlarged view of A in Figure 2;

Figure 4 is a schematic diagram of a rotating assembly in an unmanned aerial vehicle of the present invention.

In the picture:

1-skeleton; 11-frame body; 12-arm mounting seat; 121-first part; 122-second part; 123-third part; 124-second positioning hole; 2-machine arm; 3-rotating assembly ; 31-base; 32-rotating shell; 33-rotating core; 4-first half-shell; 5-second half-shell.

detailed description

The technical scheme of the present utility model will be further explained below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present utility model, but not to limit the present utility model. In addition, it should be noted that, for ease of description, only the parts related to the present invention are shown in the drawings, but not all of them.

In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or an optional connection. Detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.

In order to improve the flight stability of the UAV and reduce the interference of vibration on the IMU, as shown in Figures 1 to 4, the present invention provides an UAV, which includes a skeleton 1, a shell component connected to the skeleton 1, and The rotating assembly 3 of the frame 1 and the arm 2 installed on the frame 1 through the rotating assembly 3, and the arm 2 is rotatably installed on the frame 1 through the rotating assembly 3 relative to the frame 1.

In this embodiment, the framework 1 of the drone is an integrated structure, and the framework 1 uses magnesium alloy to increase the strength of the framework 1 and provide sufficient support for the drone; the framework 1 adopts an integrated structure to reduce the structure of the framework 1. At the same time, the rotating arm is set on the frame 1 to reduce the interference of vibration to the IMU and ensure the stability of flight.

Further, the rotating assembly 3 includes a rotating part and a base 31, the rotating part is arranged on the base 31, the base 31 is fixedly arranged on the frame 1, and the arm 2 is arranged in connection with the rotating part. Specifically, one end of the machine arm 2 is provided with a first fixed hole, and the machine arm 2 is sleeved on the rotating part through the first positioning hole. Specifically, in this embodiment, the rotating part includes a rotating shell 32 and a rotating core 33. The rotating shell 32 is sleeved on the rotating core 33. The rotating shell 32 can rotate around the axis of the rotating core 33. The rotating core 33 is fixed to the base 31. Connected, the first positioning hole of the arm 2 is sleeved on the rotating housing 32.

Through the above arrangement, when the drone encounters a turbulence caused by wind during flight, the arm 2 can automatically rotate through a certain angle to counteract the disturbance and improve the flight stability of the drone. The rotating part can adjust the angle of rotation to ensure that the rotating arm will not collide with the drone body. In other embodiments, the rotating part can also be made of a bearing. The outer ring of the bearing is fixedly connected to the first positioning hole on the rotating arm, and the inner ring is fixedly connected to the frame 1, which is not too limited here.

In order to facilitate the fixing of the arm 2 and prevent the relative rotation of the arm 2 and the rotating housing 32, further, the cross section of the rotating housing 32 is square, the first positioning hole is a square hole, and the cross section of the rotating housing 32 is designed as It is a square shape, so that after the first positioning hole is sleeved on the rotating housing 32, the arm 2 will not move relative to the rotating housing 32. Of course, in other embodiments, the cross section of the rotating housing 32 can also be a pentagonal, hexagonal or other special shape, and the shape of the first positioning hole is the same as that of the rotating housing 32; The cross section is designed to be circular, the shape of the first positioning hole is circular, and the arm 2 is fixedly connected to the rotating housing 32 by using a jack wire.

Further, the skeleton 1 includes a skeleton body 11 and an arm mounting base 12, the arm mounting base 12 is fixedly connected to the skeleton body 11, and the base 31 is fixedly arranged on the arm mounting base 12. By providing the arm mounting base 12, on the one hand, it is convenient for the rotating assembly 3 to be stably fixed on the skeleton 1, and on the other hand, the vibration impact of the arm 2 on the skeleton body 11 is reduced, thereby further improving the flight stability. Reduce the interference to the IMU.

Specifically, in this embodiment, the arm mounting base 12 includes a first part 121, a second part 122, and a third part 123 that are connected in sequence. The first part 121 and the third part 123 are arranged in parallel and spaced apart, and the first part 121 , The second part 122 and the third part 123 are both fixedly connected to the skeleton body 11, and the base 31 is fixedly arranged on the first part 121. Further, the first part 121 is located below the third part 123, the first part 121 is provided with a second positioning hole 124, the rotating part passes through the second positioning hole 124 and is located between the first part 121 and the third part 123, the base 31 is fixedly connected to the side of the first part 121 away from the third part 123. In order to ensure the stable operation of the rotating part, optionally, a third positioning hole is opened on the third part 123, and one end of the rotating core 33 is located in the third positioning hole, so that the rotating part can work normally when receiving radial force.

The drone also includes a shell assembly. Specifically, in this embodiment, the shell assembly includes a first half shell 4 and a second half shell 5, and the first half shell 4 and the second half shell 5 are buckled together to form an accommodating cavity , The skeleton 1 is located in the accommodating cavity and is fixedly connected with the first half shell 4. After the first half shell 4 and the second half shell 5 are fastened together, they are fixed by screws to ensure the stability of the connection between the first half shell 4 and the second half shell 5. By providing the shell assembly, the skeleton 1 can be effectively protected, and at the same time, it can play a certain decorative role for the drone.

Obviously, the above-mentioned embodiments of the present utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, other changes or modifications in different forms can be made on the basis of the above description. It is not necessary and impossible to list all implementation methods here. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

An unmanned aerial vehicle, characterized by comprising: a skeleton (1), a shell component connected to the skeleton (1), a rotating component (3) provided on the skeleton (1), and a rotating component (3) that passes through the rotating component (1). 3) A machine arm (2) installed on the frame (1), the machine arm (2) is rotatably installed on the frame (1) through the rotating assembly (3) relative to the frame (1) 1).
The drone according to claim 1, wherein the rotating assembly (3) comprises a rotating part and a base (31), the rotating part is arranged on the base (31), and the base (31) ) Is fixedly arranged on the frame (1), and the arm (2) is connected with the rotating part.
The unmanned aerial vehicle according to claim 2, characterized in that a first positioning hole is opened at one end of the arm (2), and the arm (2) is sleeved on the On the rotating part.
The drone according to claim 3, characterized in that the rotating part comprises a rotating shell (32) and a rotating core (33), and the rotating shell (32) is sleeved on the rotating core (33) , The rotating core (33) is fixedly connected to the base (31), the rotating housing (32) can rotate around the axis of the rotating core (33), and the first arm of the arm (2) The positioning hole is sleeved on the rotating shell (32).
The drone according to claim 3, wherein the cross section of the rotating housing (32) is square, and the first positioning hole is a square hole.
The drone according to claim 2, wherein the skeleton (1) comprises a skeleton body (11) and an arm mount (12), the arm mount (12) and the skeleton body (11) Fixed connection, the base (31) is fixedly arranged on the arm mounting base (12).
The drone according to claim 6, characterized in that the arm mount (12) comprises a first part (121), a second part (122) and a third part (123) connected in sequence, so The first part (121) and the third part (123) are arranged in parallel and spaced apart, and the first part (121), the second part (122) and the third part (123) are all connected to the The frame body (11) is fixedly connected, and the base (31) is fixedly arranged on the first part (121).
The drone according to claim 7, characterized in that a second positioning hole (124) is opened on the first part (121), and the rotating part passes through the second positioning hole (124) and is located Between the first part (121) and the third part (123), the base (31) is fixedly connected to a side of the first part (121) facing away from the third part (123).
The drone according to claim 1, characterized in that the housing assembly includes a first half-shell (4) and a second half-shell (5), the first half-shell (4) and the second half-shell (4) and the second half-shell The half-shell (5) is buckled to form an accommodating cavity, and the skeleton (1) is located in the accommodating cavity and is fixedly connected with the first half-shell (4).
The unmanned aerial vehicle according to any one of claims 1-9, wherein the skeleton (1) is integrally formed, and the material of the skeleton (1) is a magnesium alloy.