Automatic unmanned aerial vehicle arm folding mechanism

Abstract

The utility model discloses an automatic unmanned aerial vehicle arm folding mechanism which comprises an upper fixing frame and a lower fixing frame, the four corners of the upper fixing frame are respectively provided with a first connecting part extending outwards, the four corners of the lower fixing frame are respectively provided with a second connecting part, the tops of the second connecting parts are fixedly connected with fixing shafts, and the fixing shafts are rotationally connected with machine arms. A hollow semi-cylindrical mounting part is arranged on the inner side of the fixed shaft, and a limiting mechanism for limiting the rotation of the arm is arranged in the mounting part; a plurality of threaded holes are formed in the top of the fixing shaft, and a plurality of connecting holes connected with the threaded holes in a matched mode are formed in the first connecting part. Through the arrangement of the upper fixing frame and the lower fixing frame, stable supporting and accurate positioning of the vehicle arm are achieved; meanwhile, the vehicle arms are installed on the fixing shafts, rotating folding of the vehicle arms can be achieved, the limiting mechanisms are arranged in the installation parts, and the limiting mechanisms can effectively control the rotating range of the vehicle arms and the installation stability of the vehicle arms in the unfolded state.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, and particularly relates to an automatic folding mechanism for the arms of an unmanned aerial vehicle. Background Art

[0002] Unmanned aerial vehicles have become increasingly important due to their applications in multiple fields such as aerial photography, monitoring, logistics, and agriculture. With the continuous progress of unmanned aerial vehicle technology, the demand for improving the portability and usage efficiency of unmanned aerial vehicles has also been increasing. The arms and wings of unmanned aerial vehicles usually need to be unfolded before flight and folded during landing or storage to reduce the occupied space and improve the convenience of carrying. However, most of the existing folding mechanisms for the arms of unmanned aerial vehicles use bolts for fixation, and users need to disassemble the arms with professional tools, which is complex in operation, inconvenient for disassembly and assembly, thus wasting a large amount of time and reducing the practicality of the unmanned aerial vehicle.

[0003] Based on the above situation, the utility model proposes an automatic folding mechanism for the arms of an unmanned aerial vehicle, which can effectively solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic folding mechanism for the arms of an unmanned aerial vehicle. The automatic folding mechanism for the arms of an unmanned aerial vehicle provided by the utility model realizes the stable support and precise positioning of the arms by setting an upper fixing frame and a lower fixing frame; at the same time, the arms are installed on a fixed shaft, and the arms can be rotated and folded, and by arranging a limiting mechanism inside the installation part, the limiting mechanism can effectively control the rotation range of the arms and the installation stability in the unfolded state.

[0005] The utility model is realized by the following technical solutions:

[0006] An automatic folding mechanism for the arms of an unmanned aerial vehicle, comprising an upper fixing frame and a lower fixing frame. The four corners of the upper fixing frame are respectively provided with first connecting parts extending outwards, the four corners of the lower fixing frame are respectively provided with second connecting parts, the top of the second connecting part is fixedly connected with a fixed shaft, the fixed shaft is rotatably connected with an arm, the inner side of the fixed shaft is provided with an installation part in the shape of a hollow semi-cylindrical, and a limiting mechanism for restricting the rotation of the arm is arranged inside the installation part; a plurality of threaded holes are opened at the top of the fixed shaft, and a plurality of connecting holes matching with the threaded holes are opened in the first connecting part.

[0007] According to the above technical solution, as a further preferred technical solution of the above technical solution, the limiting mechanism includes a limiting member and a spring. The spring is installed at the bottom of the limiting member and sleeved outside the fixed column. The top of the limiting member is fixedly connected with a pressing column, and the first connecting portion is provided with a through hole for the pressing column to pass through; the bottom of the limiting member is fixedly connected with a base, and a guiding hole is provided on one side of the base. The guiding hole is in fit connection with the guiding column, and the top of the outer end of the base is fixedly connected with a positioning column; an arc groove for the positioning column to insert is provided at one end of the machine arm, and a positioning hole is provided on the top surface of the arc groove.

[0008] According to the above technical solution, as a further preferred technical solution of the above technical solution, both the fixed column and the guiding column are fixedly connected with the lower fixing frame.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, a power pivot is fixedly connected to the top of the end of the machine arm away from the fixed shaft, and a wing is fixedly connected to the output end of the power pivot.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, support feet are respectively fixedly connected to the four corners of the bottom of the lower fixing frame.

[0011] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0012] An automatic folding mechanism for a drone arm provided by the present invention realizes the stable support and precise positioning of the drone arm by setting an upper fixing frame and a lower fixing frame; at the same time, the drone arm is installed on a fixed shaft, and the drone arm can be rotated and folded. And by arranging a limiting mechanism inside the installation portion, the limiting mechanism can effectively control the rotation range of the drone arm and the installation stability in the unfolded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention

[0014] Figure 2 is an installation schematic diagram of the limiting mechanism of the present invention;

[0015] Figure 3 is Figure 2 a partial enlarged view of part A of

[0016] Figure 4 is a schematic diagram of the structure of the upper fixing frame of the present invention;

[0017] Figure 5 is a schematic diagram of the structure of the drone arm of the present invention;

[0018] Figure 6Schematic diagram of the installation of the limiting member of the present utility model; Detailed implementation manners

[0019] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation manners of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent.

[0020] An automatic folding mechanism for a drone arm includes an upper fixing frame 1 and a lower fixing frame 2. The four corners of the upper fixing frame 1 are respectively provided with first connecting portions 11 extending outwards. The four corners of the lower fixing frame 2 are respectively provided with second connecting portions 21. A fixing shaft 22 is fixedly connected to the top of the second connecting portion 21. The fixing shaft 22 is rotatably connected to the arm 3. An installation portion 23 in the shape of a hollow semi-cylindrical is arranged inside the fixing shaft 22. A limiting mechanism for restricting the rotation of the arm 3 is arranged inside the installation portion 23; a plurality of threaded holes 24 are opened at the top of the fixing shaft 22, and a plurality of connection holes 12 for cooperating with the threaded holes 24 are opened in the first connecting portion 11.

[0021] The present utility model realizes the stable support and precise positioning of the arm 3 by setting the upper fixing frame 1 and the lower fixing frame 2; at the same time, the arm 3 is installed on the fixing shaft 22, and the arm 3 can be rotated. And by arranging a limiting mechanism inside the installation portion 23, the limiting mechanism can effectively control the rotation range of the arm 3 and the installation stability in the unfolded state.

[0022] Further, in another embodiment, the limiting mechanism includes a limiting member 4 and a spring 5. The spring 5 is installed at the bottom of the limiting member 4 and sleeved outside the fixing column 25. A pressing column 41 is fixedly connected to the top of the limiting member 4. The first connecting portion 11 is provided with a through hole 13 for the pressing column 41 to pass through; a base 42 is fixedly connected to the bottom of the limiting member 4. A guiding hole 43 is opened on one side of the base 42, and the guiding hole 43 is in cooperating connection with a guiding column 26. A positioning column 44 is fixedly connected to the outer end top of the base 42; an arc groove 31 for inserting the positioning column 44 is opened at one end of the arm 3, and a positioning hole 32 is opened on the top surface of the arc groove 31.

[0023] By setting a limiting mechanism, through the mutual cooperation of the limiting member 4 and the spring 5, the elastic force of the spring 5 is used to limit the rotation of the arm 3, ensuring the stability of the arm 3 in the folded and unfolded states; at the same time, through the cooperation of the pressing column 41 and the through hole 13, the operator can easily release the limiting mechanism to perform the folding or unfolding operation of the arm 3; and the cooperation of the positioning column 44, the arc groove 31 and the positioning hole 32 effectively controls the rotation range of the arm 3 and the stability in the unfolded state.

[0024] Further, in another embodiment, both the fixing column 25 and the guiding column 26 are fixedly connected to the lower fixing frame 2. The fixed connection of the fixing column 26 and the guiding column 26 to the lower fixing frame 2 provides the installation basis for the limiting mechanism.

[0025] Further, in another embodiment, a power pivot 6 is fixedly connected to the top of the end of the arm 3 far from the fixed shaft 22, and a wing 7 is fixedly connected to the output end of the power pivot 6.

[0026] Further, in another embodiment, support feet 8 are respectively fixedly connected to the four corners of the bottom of the lower fixing frame 2.

[0027] Based on the description and drawings of the present invention, those skilled in the art can easily manufacture or use an automatic folding mechanism for the drone arm of the present invention and can achieve the positive effects recorded in the present invention.

[0028] Unless otherwise clearly specified and limited, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for illustrative purposes and cannot be understood as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the drawings and according to specific circumstances.

[0029] Unless otherwise clearly specified and limited, in the present invention, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An automatic drone arm folding mechanism, characterized in that: The invention comprises an upper fixing frame (1) and a lower fixing frame (2), wherein the four corners of the upper fixing frame (1) are respectively provided with first connecting parts (11) extending outward, and the four corners of the lower fixing frame (2) are respectively provided with second connecting parts (21), and the top of the second connecting part (21) is fixedly connected with a fixing shaft (22), and the fixing shaft (22) is rotatably connected with an organic arm (3), and a hollow semi-cylindrical mounting part (23) is arranged on the inner side of the fixing shaft (22), and a limiting mechanism for limiting the rotation of the organic arm (3) is arranged inside the mounting part (23); a plurality of threaded holes (24) are opened on the top of the fixing shaft (22), and a plurality of connecting holes (12) are opened on the first connecting part (11) for matching and connecting with the threaded holes (24).

2. The automatic drone arm folding mechanism according to claim 1, characterized in that: The limiting mechanism comprises a limiting member (4) and a spring (5), wherein the spring (5) is mounted at the bottom of the limiting member (4) and sleeved on the outside of the fixing column (25), the top of the limiting member (4) is fixedly connected with a pressing column (41), and the first connecting portion (11) is provided with a through hole (13) for the pressing column (41) to pass through; the bottom of the limiting member (4) is fixedly connected with a base (42), one side of the base (42) is provided with a guide hole (43), the guide hole (43) is matched and connected with the guide column (26), and the top of the outer end of the base (42) is fixedly connected with a positioning column (44); one end of the machine arm (3) is provided with a circular arc groove (31) for the positioning column (44) to be inserted, and the top surface of the circular arc groove (31) is provided with a positioning hole (32).

3. The automatic drone arm folding mechanism according to claim 2, characterized in that: The fixing column (25) and the guide column (26) are both fixedly connected to the lower fixing frame (2).

4. The automatic drone arm folding mechanism according to claim 1, characterized in that: The top of one end of the machine arm (3) away from the fixed shaft (22) is fixedly connected to a power pivot (6), and the output end of the power pivot (6) is fixedly connected to a wing (7).

5. The automatic drone arm folding mechanism according to claim 1, characterized in that: The four bottom corners of the lower fixing frame (2) are respectively fixedly connected with supporting feet (8).

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