Arm assembly and unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of unmanned aerial vehicles, and discloses a vehicle arm assembly and an unmanned aerial vehicle, the vehicle arm assembly comprises a vehicle arm, the vehicle arm is installed on a vehicle body of the unmanned aerial vehicle, and the vehicle arm is provided with a vehicle arm cavity; the antenna plate is arranged in the vehicle arm cavity, and the antenna plate is provided with a communication antenna; wherein when the vehicle arms are in the unfolded state, the effective area of the antenna plate is larger than the projection area of the antenna plate in the course axis direction, and / or the effective area of the antenna plate is larger than the projection area of the antenna plate in the transverse rolling axis direction. According to the antenna plate, an additional antenna installation support is not needed, the antenna plate is installed in the vehicle arm, the maximum installation size and / or area of the antenna plate can be achieved in the limited internal space of the vehicle arm, the number and weight of overall parts of the unmanned aerial vehicle are optimized, and the aerodynamic resistance of the unmanned aerial vehicle is reduced.

Description

Technical Field

[0001] The present application relates to the field of unmanned aerial vehicles (UAVs), and more specifically, to an arm assembly and a UAV having the same. Background Art

[0002] A drone is an unmanned aerial vehicle that is controlled by a radio remote control device and its own program control device.

[0003] At present, in order to obtain a sufficiently large installation area, the communication antenna of a UAV is generally installed inside a tripod, and the tripod is located at the end of the UAV arm, which affects the weight distribution design of the UAV. Utility Model Content

[0004] The present application provides an arm assembly and a drone, which can install a communication antenna in a limited space of the arm and ensure the maximum volume and / or area of ​​the communication antenna.

[0005] The present application provides an arm assembly and a drone using the following technical solutions:

[0006] In the first aspect, an arm assembly adopts the following technical solution:

[0007] A machine arm assembly, comprising:

[0008] An arm, the arm is used to be installed on the fuselage of the drone, and the arm has an arm chamber;

[0009] An antenna board is arranged in the arm cavity, and the antenna board is provided with a communication antenna, wherein, when the arm is in an unfolded state, the effective area of ​​the antenna board is larger than the projection area of ​​the antenna board along the heading axis direction, and / or the effective area of ​​the antenna board is larger than the projection area of ​​the antenna board along the roll axis direction.

[0010] Optionally, the antenna board is a PCB board, and when the arm is in an unfolded state, the antenna board forms a first angle with the heading axis of the drone, and the first angle is an acute angle.

[0011] Optionally, a cross-section of the arm chamber along the length direction of the arm is roughly rectangular.

[0012] Optionally, it also includes a motor line, which passes through the arm cavity and is spaced apart from the communication antenna. The motor line is used to supply power to the motor at the end of the arm and / or transmit data.

[0013] Optionally, the arm is provided with a first fixing module and a second fixing module, both of which are located in the arm cavity, the first fixing module contacts and presses the antenna board to fix the antenna board in the arm cavity, and the second fixing module contacts the motor wire to fix the motor wire in the arm cavity.

[0014] Optionally, the first fixing module includes two clamps, one end of which is respectively fixed to the inner wall of the arm cavity, one end of one of the clamps away from the arm cavity contacts and presses against one side of the antenna board, and the other end of the clamps away from the arm cavity contacts and presses against the other side of the antenna board.

[0015] Optionally, the second fixing module includes a first mounting plate and a second mounting plate, one side of the first mounting plate is fixedly connected to one side of the second mounting plate, the other side of the first mounting plate is fixedly connected to the inner wall of the arm chamber, the inner wall of the arm and the first mounting plate and the second mounting plate together form a accommodating chamber, and the motor line is located in the accommodating chamber.

[0016] Optionally, a limit plate is provided at one end of the arm chamber close to the motor body, the limit plate is fixedly connected to the arm, and the limit plate contacts and presses against the antenna plate.

[0017] Optionally, the antenna board is an FPC board; and the FPC board is at least partially bent.

[0018] Optionally, the antenna plate is roughly parallel to the inner wall of the arm chamber (13); and / or the axis point of the bent portion of the antenna plate is close to the motor line.

[0019] Optionally, a receiving groove is provided on the inner wall of the arm chamber, and the receiving groove is provided in the contact area between the inner wall of the arm chamber and the antenna board, and the antenna board is at least partially located in the receiving groove.

[0020] In the second aspect, a drone adopts the following technical solution:

[0021] A drone comprises a fuselage and the above-mentioned arm assembly, wherein the arm assembly is connected to the fuselage.

[0022] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0023] The arm assembly proposed in the present application sets the antenna board in the arm cavity, and when the arm is in the unfolded state, the effective area of ​​the antenna board is larger than the projected area of ​​the antenna board along the heading axis, and / or the effective area of ​​the antenna board is larger than the projected area of ​​the antenna board along the roll axis, so that the communication antenna can achieve a larger installation area within the limited space of the arm cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an arm assembly disclosed in an embodiment of the present application;

[0025] Figure 2 A cross-sectional view of an arm assembly highlighting the arm disclosed in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Arm assembly; 10. Arm; 11. Arm body; 12. Mounting seat; 13. Arm chamber; 131. Receiving groove; 132. Limiting plate; 133. First inner wall; 134. Second inner wall; 135. Third inner wall; 136. Fourth inner wall; 15. First fixing module; 151. Clip; 16. Second fixing module; 161. First mounting plate; 162. Second mounting plate; 163. Receiving chamber; 20. Motor wire; 30. Antenna plate; 40. Communication antenna; 50. First angle. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The embodiment of the present application discloses an arm assembly, which is suitable for a drone; the arm assembly 1 is connected to the fuselage, and multiple arm assemblies 1 can be provided as needed, and multiple arm assemblies 1 surround the fuselage and are connected to the fuselage. The arm assembly 1 includes an arm 10. In some embodiments, the arm 10 and the fuselage of the drone are movably arranged so that the arm 10 can be folded on the surface of the fuselage to be in a folded posture, or away from the surface of the fuselage to be in an unfolded state. In some embodiments, the arm 10 of the drone is fixedly connected to the fuselage, and the arm 10 is always in an unfolded state.

[0030] See also Figure 1 and Figure 2The arm 10 includes an arm body 11, a mounting seat 12 and a back cover. The mounting seat 12 is located at one end of the arm body 11 away from the drone fuselage for mounting a motor. The back cover is located at one end of the arm body 11 close to the fuselage. The arm 10 has an arm chamber 13. In this embodiment, the arm body 11 is fixedly connected to the back cover, the mounting seat 12 and the arm body 11 are integrally formed, the arm body 11 is generally in the shape of a hollow quadrangular prism, the arm chamber 13 is located in the arm body 11, and the cross-section of the arm chamber 13 along the length direction of the arm 10 is generally rectangular. In other embodiments, the arm body 11 may also be a hollow cylinder or other shapes.

[0031] See also Figure 2 The arm assembly 1 also includes an antenna plate 30 and a communication antenna 40. The communication antenna 40 is arranged on the antenna plate 30, and the antenna plate 30 is arranged in the arm chamber 13. The antenna plate 30 can be used to install various antennas. The area on the antenna plate 30 where the antenna can be installed, or the area where the antenna has been installed is the effective area. When the arm 10 is in the unfolded state, the effective area of ​​the antenna plate 30 is larger than the projection area of ​​the antenna plate 30 along the heading axis direction, and / or the effective area of ​​the antenna plate 30 is larger than the projection area of ​​the antenna plate 30 along the roll axis direction, so that within the limited space of the arm chamber 13, the communication antenna 40 can achieve a larger installation area. The communication antenna 40 is installed in the arm chamber 13 through the antenna plate 30 as a carrier without the use of an additional mounting bracket, which optimizes the number and weight of the overall parts of the drone and reduces the aerodynamic resistance of the drone.

[0032] See also Figure 1 and Figure 2 The arm assembly 1 also includes a motor line 20, the motor line 20 passes through the arm 10, and is spaced apart from the communication antenna 40, and the motor line 20 is used to power the motor at the end of the arm 10 and / or transmit data. The motor line 20 is located in the arm chamber 13 and is electrically connected to the motor body 21 at one end and electrically connected to the control module in the fuselage of the drone at the other end. Specifically, a first through hole is provided at the connection between the mounting seat 12 and the arm body 11, the first through hole is communicated with the arm chamber 13, and the motor line 20 passes through the first through hole to enter the arm chamber 13; the rear cover is provided with a second through hole, the second through hole is communicated with the arm chamber 13, and the motor line 20 entering the arm chamber 13 passes through the second through hole to be electrically connected to the control module in the fuselage.

[0033] In some embodiments, the antenna board 30 is a PCB board. When the arm 10 is in the unfolded state, the antenna board 30 and the heading axis of the drone are at a first angle 50, and the first angle 50 is an acute angle. The length direction of the antenna board 30 is the same as the length direction of the arm 10. The antenna board 30 and the heading axis of the drone are at a first angle 50. The vertical or horizontal placement relative to the antenna board 30 can ensure that the antenna board 30 and the communication antenna 40 with the maximum volume and / or area can be accommodated in the limited space of the arm chamber 13. The motor line 20 is located at the corner of the rectangle, and the antenna board 30 is approximately located at the diagonal of the rectangle, so that the communication antenna 40 is as far away from the motor line 20 as possible, reducing the interference of the receiving and transmitting signals generated by the motor line 20 during the operation of the antenna board 30.

[0034] In some embodiments, the antenna board 30 is an FPC board, and the antenna board 30 is at least partially bent, and the antenna board 30 is substantially parallel to the inner wall of the arm chamber 13; and / or, the axis point of the bent portion of the antenna board 30 is close to the motor line 20. The flexible FPC board can be bent. Compared with the rigid PCB board, the flexible FPC board can be deformed according to the installation requirements in the limited space of the arm chamber 13, thereby increasing the effective area of ​​the antenna board 30 as much as possible, and at the same time, the antenna board 30 and the communication antenna 40 are spaced apart from the motor line 20 and away from the motor line 20.

[0035] Please continue reading Figure 2In order to enhance the installation stability of the antenna board 3, the arm 10 is provided with a first fixing module 15 for fixing the antenna board 30. The first fixing module 15 is located in the arm chamber 13. The first fixing module 15 contacts and presses the antenna board 30 to fix the antenna board 30 in the arm chamber 13. Specifically, the arm chamber 13 has a first inner wall 133, a second inner wall 134, a third inner wall 135 and a fourth inner wall 136. The first inner wall 133 is parallel to the second inner wall 134, and the third inner wall 135 is parallel to the fourth inner wall 136. The first fixing module 15 includes two clips 151, one end of the two clips 151 is fixed to the first inner wall 133 and the second inner wall 134 respectively, and the two clips 151 are arranged symmetrically with respect to the central axis of the arm 10 perpendicular to the horizontal plane, one end of one clip 151 away from the arm chamber 13 contacts and presses one side of the antenna board 30, and the other end of the other clip 151 away from the arm chamber 13 contacts and presses the other side of the antenna board 30. The two clips 151 are respectively located on both sides of the antenna board 30 to press the antenna board 30 so as to limit the movement of the antenna board 3 toward the short side of the arm 1. Further, the clip 151 is a rectangular parallelepiped, the straight line where the length direction of the clip 151 is located is parallel to the straight line where the length direction of the arm body 11 is located, the length of the clip 151 is the same as the length of the arm body 11, and the two clips 151 are integrally formed with the arm body 11. In this embodiment, the communication antenna 40 and the antenna plate 30 are roughly located at the diagonal of the rectangle, one side of the antenna plate 3 is in contact with and pressed against the first inner wall 133 and one of the clips 151, and the other side is in contact with and pressed against the third inner wall 135 and another clip 151. When one side of the antenna plate 30 is located at the intersection of the first inner wall 133 and the fourth inner wall 136, and the other side is located at the intersection of the second inner wall 134 and the third inner wall 135, that is, the communication antenna 40 and the antenna plate 30 are located at the diagonal of the rectangle. At this time, the volume and area of ​​the communication antenna 40 and the antenna plate 30 in the arm chamber 13 are maximized. The installation position of the antenna plate 30 can be adjusted according to the actual volume requirements of the antenna plate 30.

[0036] The inner wall of the arm chamber 13 is provided with a receiving groove 131 and a limiting plate 132. The receiving groove 131 is provided in the contact area of ​​the inner wall of the arm chamber 13 with the antenna plate 30. The antenna plate 30 is at least partially located in the receiving groove 131. The limiting plate 132 is located at the end of the arm chamber 13 close to the motor. The limiting plate 132 contacts and presses against the antenna plate 30 to block the movement of the antenna plate 30 toward the motor, and further increases the effective area of ​​the antenna plate 30. The length direction of the limiting plate 132 is the same as the length direction of the arm 10. The pressing point between the limiting plate 132 and the antenna plate 30 is the midpoint of the short side of the antenna plate 30. The receiving groove 131 is located on the third inner wall 135.

[0037] The rear cover is provided with a connection end, which is located in the arm chamber 13 and fixedly connected to the arm body 11. The end of the connection end that is close to the arm body 11 contacts and presses against the short side of the antenna plate 30. The rear cover and the limit plate 132 work together to limit the movement of the antenna plate 30 in the length direction of the arm 10. In this embodiment, the connection end is fixed to the arm body 11 with glue, and in other embodiments, the connection end can be fixed to the arm body 11 with bolts. The two clamps 151, the limit plate 132 and the rear cover are respectively in contact with and pressed against the peripheral wall of the antenna plate 30, thereby enhancing the installation stability of the antenna plate 30 and reducing the failure of the antenna plate 30 to loosen during the operation of the drone.

[0038] Please continue reading Figure 2 In order to fix the motor wire 20 and reduce the interference caused by the motor wire 20 during the operation of the antenna plate 30, the arm 10 is provided with a second fixing module 16, which is located in the arm chamber 13. The second fixing module 16 contacts the motor wire 20 to fix the motor wire 20 in the arm chamber 13. The second fixing module 16 includes a first mounting plate 161 and a second mounting plate 162. One side of the first mounting plate 161 is fixedly connected to one side of the second mounting plate 162, and the other side of the first mounting plate 161 is fixedly connected to the inner wall of the arm chamber 13. The inner wall of the arm 1 and the first mounting plate 161 and the second mounting plate 162 are enclosed to form a receiving chamber 163, and the motor wire 20 is located in the receiving chamber 163. In this embodiment, the second mounting plate 162 is fixedly connected to the inner wall of the arm chamber 13 on one side away from the first mounting plate 161. The first mounting plate 161, the second mounting plate 162 and the arm 10 are integrally formed. The first mounting plate 161 and the second mounting plate 162 separate the motor wire 20 from the antenna board 30 to prevent the antenna board 30 from contacting the motor wire 20.

[0039] Adjust the installation position of the antenna as needed. When one side of the antenna board 30 is located at the intersection of the first inner wall 133 and the fourth inner wall 136, and the other side is located at the intersection of the second inner wall 134 and the third inner wall 135, the volume and area of ​​the antenna board 30 in the arm chamber 13 are the largest, and the accommodating chamber 163 is located at the intersection of the first inner wall 133 and the third inner wall 135 or at the intersection of the second inner wall 134 and the fourth inner wall 136. At this time, the distance between the motor line 20 and the antenna board 30 is the farthest; when one side of the antenna board 30 contacts and presses with the first inner wall 133 and one of the clips 151, and the other side contacts and presses with the third inner wall 135 and another clip 151, the accommodating chamber 163 is located at the intersection of the second inner wall 134 and the fourth inner wall 136. At this time, the distance between the motor line 20 and the antenna board 30 is the farthest. The farther the accommodating chamber 163 is from the antenna board 30, the less interference the motor wire 20 in the accommodating chamber 163 has on the antenna board 30. According to actual application requirements, the specific position of the accommodating chamber 163 is determined according to the distance between the motor wire 20 and the antenna board 30 while ensuring the volume and area requirements of the antenna board 30.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the above description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Therefore: all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An arm assembly, applied to a drone, characterized in that: include: An arm (10), the arm (10) being used for being mounted on a fuselage of a drone, the arm (10) having an arm chamber (13); An antenna plate (30) is arranged in the arm chamber (13), and the antenna plate (30) is provided with a communication antenna (40); Wherein, when the aircraft arm (10) is in an unfolded state, the effective area of ​​the antenna plate (30) is larger than the projection area of ​​the antenna plate (30) along the heading axis direction, and / or the effective area of ​​the antenna plate (30) is larger than the projection area of ​​the antenna plate (30) along the roll axis direction.

2. The machine arm assembly according to claim 1, characterized in that: The antenna board (30) is a PCB board, and when the machine arm (10) is in an unfolded state, the antenna board (30) forms a first angle (50) with the heading axis of the drone, and the first angle (50) is an acute angle.

3. The machine arm assembly according to claim 2, characterized in that: The cross section of the arm chamber (13) along the length direction of the arm (10) is rectangular.

4. The machine arm assembly according to claim 1, characterized in that: It also includes a motor line (20), which passes through the arm chamber (13) and is spaced apart from the communication antenna (40). The motor line (20) is used to supply power to the motor at the end of the arm (10) and / or transmit data.

5. The machine arm assembly according to claim 4, characterized in that: The arm (10) is provided with a first fixing module (15) and a second fixing module (16), the first fixing module (15) and the second fixing module (16) are both located in the arm chamber (13), the first fixing module (15) contacts and presses the antenna board (30) to fix the antenna board (30) in the arm chamber (13), and the second fixing module (16) contacts the motor wire (20) to fix the motor wire (20) in the arm (10) chamber.

6. The machine arm assembly according to claim 5, characterized in that: The first fixing module (15) comprises two clamping ribs (151), one end of the two clamping ribs (151) being respectively fixed to the inner wall of the arm chamber (13), one end of one clamping rib (151) away from the arm chamber (13) contacts and presses against one side of the antenna plate (30), and the other end of the other clamping rib (151) away from the arm chamber (13) contacts and presses against the other side of the antenna plate (30).

7. The machine arm assembly according to claim 5, characterized in that: The second fixing module (16) comprises a first mounting plate (161) and a second mounting plate (162), one side of the first mounting plate (161) is fixedly connected to one side of the second mounting plate (162), the other side of the first mounting plate (161) is fixedly connected to the inner wall of the arm chamber (13), the inner wall of the arm (10) and the first mounting plate (161) and the second mounting plate (162) are enclosed to form a accommodating chamber (163), and the motor line (20) is located in the accommodating chamber (163).

8. The machine arm assembly according to claim 4, characterized in that: A limit plate (132) is provided at one end of the machine arm chamber (13) close to the motor, the limit plate (132) is fixedly connected to the machine arm (10), and the limit plate (132) contacts and presses against the antenna plate (30).

9. The machine arm assembly according to claim 4, characterized in that: The antenna board (30) is an FPC board; and the antenna board (30) is at least partially bent.

10. The machine arm assembly according to claim 9, characterized in that: The antenna plate (30) is parallel to the inner wall of the arm chamber (13); and / or the axis center point of the bent portion of the antenna plate (30) is close to the motor wire (20).

11. The machine arm assembly according to any one of claims 1 to 10, characterized in that: The inner wall of the arm chamber (13) is provided with a receiving groove (131), and the receiving groove (131) is arranged on the inner wall of the arm chamber (13) at a contact area of ​​the antenna plate (30), and the antenna plate (30) is at least partially located in the receiving groove (131).

12. A drone, characterized in that: It comprises a fuselage and an arm assembly (1) as claimed in any one of claims 1 to 10, wherein the arm assembly (1) is connected to the fuselage.

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