Unmanned aerial vehicle arm rotating shaft for folding

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and provides an unmanned aerial vehicle arm rotating shaft for folding. The mounting piece is mounted on the main body and is used for being mounted with an arm; the driving mechanism is used for driving the machine arms to be unfolded or folded; the limiting mechanism is used for limiting the position of the vehicle arm relative to the unmanned aerial vehicle body through the mounting piece; after the driving mechanism drives the vehicle arm to be unfolded or folded through the installation part, the limiting mechanism limits free movement of the vehicle arm through the installation part. According to the unmanned aerial vehicle, the vehicle arms are unfolded or folded through the driving mechanisms, normal operation of the unmanned aerial vehicle can be guaranteed, transportation is facilitated, and the situation that the vehicle arms are stressed and deformed due to the unfolded state during moving is avoided; and meanwhile, the vehicle arms are limited through the limiting mechanisms, so that the vehicle arms do not move freely no matter the vehicle arms are unfolded or folded, and normal use of the unmanned aerial vehicle is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a foldable UAV arm rotating shaft. Background Art

[0002] With the rapid development of drone technology, drones are widely used in a variety of fields, including aerial photography, agricultural plant protection, logistics and distribution, geological exploration, and military reconnaissance. Their performance and user experience are constantly improving. Drones are equipped with several rotors, with quadcopters being the most common. Existing drones connect the wings to the main body via arms, which are often fixed to the body to ensure flight stability. However, this fixed connection between the arms and the body takes up a lot of space, making it difficult to transport them. Furthermore, it's difficult to ensure that the arms won't deform during movement, affecting subsequent use. Summary of the Invention

[0003] In view of the shortcomings of the prior art that affect transportation and arm deformation, the purpose of the present invention is to provide a foldable drone arm shaft that does not affect transportation and arm deformation.

[0004] In order to solve the above problems, the present invention provides the following technical solutions: The embodiment of the present application provides a foldable drone arm shaft, comprising: a main body for mounting with the drone body; A mounting member, mounted on the main body, for mounting with the machine arm; A driving mechanism, used for driving the arm to expand or close; A limiting mechanism, used to limit the position of the arm relative to the drone body via the mounting member; Wherein, when the driving mechanism drives the machine arm to expand or close via the mounting member, the limiting mechanism limits the free movement of the machine arm via the mounting member.

[0005] The beneficial effects of the present invention are as follows: the arms are expanded or closed by a driving mechanism, which can ensure the normal operation of the drone, facilitate transportation, and prevent the arms from being deformed due to force in the expanded state when moving; at the same time, the arms are limited by a limiting mechanism, so that the arms will not move freely whether they are expanded or closed, thereby preventing the normal use of the drone from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A perspective view of the present invention; Figure 2 An exploded view of one embodiment of the present invention; Figure 3 A perspective view of a mounting member according to one embodiment of the present invention; Figure 4This is an exploded view of another embodiment of the present invention.

[0007] Reference numerals: 10. Main body; 20. Mounting member; 30. Driving mechanism; 40. Limiting mechanism; 11. Fixing block; 12. Support member; 31. Power member; 32. Driving member; 33. Telescopic member; 34. Rotating drum; 35. Spiral groove; 36. Round rod; 41. First limiting member; 42. Pressing assembly; 421. Elastic member; 422. Second limiting member; 43. Limiting groove. DETAILED DESCRIPTION

[0008] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0009] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0010] For the convenience of describing the first, second, and third directions in the embodiments of this application, the first direction is the left-right direction in the drawings, the second direction is the front-back direction in the drawings, and the third direction is the up-down direction in the drawings. The x-axis arrow direction is referred to as the "right" direction, the y-axis arrow direction is referred to as the "up" direction, and the z-axis arrow direction is referred to as the "back" direction in the following text. However, in the actual application of this application, this is not limiting.

[0011] like Figure 1-Figure 3As shown, this embodiment provides a foldable drone arm hinge, comprising: a main body 10, a mounting member 20, a drive mechanism 30, and a limiting mechanism 40. The main body 10 is used for mounting to the drone body; the mounting member 20 is mounted to the main body 10 and is used to mount to the drone arm; the drive mechanism 30 is used to drive the arm to expand or close; and the limiting mechanism 40 is used to limit the position of the arm relative to the drone body via the mounting member 20. When the drive mechanism 30 drives the arm to expand or close via the mounting member 20, the limiting mechanism 40 limits the free movement of the arm via the mounting member 20. The drive mechanism 30 deploys the arm, enabling normal drone flight. The drive mechanism 30 closes the arm, facilitating transport and preventing deformation during movement. Furthermore, the limiting mechanism 40 constrains the arm, preventing free movement when the arm is deployed or closed, preventing interference with normal drone operation.

[0012] Optionally, the main body 10 includes a fixing block 11 and a support member 12; the fixing block 11 is fixedly mounted to the drone body; and the limiting mechanism 40 is disposed within the support member 12. The limiting mechanism 40 disposed within the support member 12 can prevent contact or prevent debris from entering the limiting mechanism and affecting the limiting position.

[0013] Optionally, the drive mechanism 30 includes a power member 31 and a driver 32. The power member 31 is used to drive the mounting member 20 via the driver 32, and the movement of the mounting member 20 causes the arm to expand or close. The power member 31 is fixedly mounted to the main body 10, and the driver 32 is fixedly mounted to the mounting member 20. The power member 31 drives the driver 32 to rotate, thereby rotating the arm mounted on the mounting member 20. This direct drive mechanism for expanding or closing the arm reduces the rotational space and facilitates operation.

[0014] like Figure 1-Figure 3 As shown, in some embodiments, the power member 31 is a driving motor, and the driving member 32 is a rotating shaft; the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the machine arm to rotate through the mounting member 20, so that the machine arm is expanded or closed.

[0015] Preferably, the drive motor is a three-phase asynchronous motor, and the specific model can be selected according to actual needs, and is specifically selected here.

[0016] According to the power part 31 being the driving motor, the driving part 32 being the rotating shaft: Optionally, the limiting mechanism 40 includes a first limiting member 41 and a holding assembly 42; the first limiting member 41 is fixedly mounted to the mounting member 20; the holding assembly 42 is mounted to the main body 10 and constantly exerts a force to move toward the first limiting member 41; when the mounting member 20 stops rotating, the holding assembly 42 restricts the rotation of the first limiting member 41, and the first limiting member 41 restricts the rotation of the arm via the mounting member 20. The constant force exerted by the holding assembly 42 toward the first limiting member 41 prevents the mounting member 20 from rotating easily unless subjected to the rotational force of the shaft, thereby ensuring normal operation and use of the arm.

[0017] Optionally, the holding assembly 42 includes an elastic member 421 and a second limiting member 422. The elastic member 421 applies a force to the second limiting member 422, forcing it toward the first limiting member 41. The elastic member 421 compresses the second limiting member 422 against the first limiting member 41, ensuring a stable blocking force on the first limiting member 41 and maintaining the stability of the arm. Furthermore, the use of the elastic member 421 allows the first limiting member 41 to rotate with the mounting member 20, overcoming the elastic force and enabling more convenient operation.

[0018] Optionally, the first limit member 41 and the second limit member 422 are both end face cams, and the first limit member 41 is provided with two recessed positions, corresponding to the deployment and retraction of the arm respectively; the second limit member 422 is provided with two raised positions, and when the protrusion on the second limit member 422 falls into the recess on the first limit member 41, the arm is in the most stable state.

[0019] Optionally, the first stopper 41 is a face cam with two recessed positions corresponding to the deployment and retraction of the arm. The second stopper 422 comprises a support block with a ball or roller disposed thereon. The ball or roller rolls on the first stopper 41. When the ball or roller rolls to the recessed position, the arm is in its most stable state. Furthermore, the design of the ball or roller can extend the life of the first stopper 41 and the second stopper 422, thereby increasing their service life.

[0020] Optionally, the support member 12 is a hollow shell. The inner cross section of the support member 12 is polygonal, and the outer cross section of the second limiter 422 is polygonal. The second limiter 422 is located inside the support member 12 and can only move axially along the support member 12 under the action of the polygon.

[0021] Preferably, the cross-sections of the support member 12 and the second limiting member 422 are quadrilateral, pentagon, or hexagon, and no specific selection is made here.

[0022] like Figure 4As shown, in other embodiments, the drive mechanism 30 further includes a telescopic member 33 and a rotating drum 34. The extension or retraction of the telescopic member 33 drives the rotating drum 34 to rotate, and the rotating drum 34 drives the mounting member 20 to rotate. The mounting member 20 can be rotated simply by extending or retracting the telescopic member 33, thereby achieving rotation of the machine arm, which is simple and convenient to operate.

[0023] Optionally, the telescopic member is an electric telescopic rod.

[0024] Optionally, a spiral groove 35 is provided on the rotating drum 34, with the ends of the spiral groove 35 corresponding to the expansion and retraction of the machine arm respectively. The telescopic member 33 is provided with a round rod 36, which is mounted on the inner rod of the telescopic member 33. The round rod 36 is positioned in the spiral groove 35, and the telescopic member 33 moves axially in the spiral groove 35 via the round rod 36, driving the rotating drum 34 to rotate. The axial movement of the round rod 36 drives the rotating drum 34 to rotate via the spiral groove 35, making operation convenient.

[0025] Optionally, the round rod 36 is rotatably connected to the telescopic member 33, and the round rod 36 can rotate around the axis. The rotation of the round rod 36 can reduce the friction between the round rod 36 and the spiral groove 35, and also slow down the wear of the round rod 36 and the spiral groove 35.

[0026] Optionally, the limiting mechanism 40 includes a limiting groove 43 provided on the rotating drum 34. The limiting groove 43 is arranged axially relative to the rotating drum 34 and is respectively provided at both ends of the spiral groove 35 and communicates with both ends of the spiral groove 35. When the round rod 36 moves into the limiting groove 43, the limiting groove 43 acts to prevent the rotating drum 34 from rotating, and the rotating drum 34 stops the mounting member 20 from rotating. The limiting groove 43 is arranged axially along the rotating drum 34, so that the movement direction of the round rod 36 is perpendicular to the rotation direction of the rotating drum 34. In other words, the round rod 36 prevents the rotating drum 34 from rotating under the action of the limiting groove 43, so that the rotation of the arm is restricted after it rotates, ensuring the operational stability of the arm.

[0027] Optionally, there are multiple spiral grooves 35 and multiple round rods 36 , and the numbers of the spiral grooves 35 and the numbers of the round rods 36 are the same.

[0028] Preferably, there are two or three spiral grooves 35 and round rods 36.

[0029] In summary, the present invention provides a foldable drone arm shaft, which is used to expand or close the arm through a driving mechanism, thereby ensuring the normal operation of the drone, facilitating transportation, and preventing the arm from being deformed due to force in the expanded state when moving; at the same time, the arm is limited by a limiting mechanism, so that the arm will not move freely whether it is expanded or closed, thereby preventing it from affecting the normal use of the drone.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable drone arm shaft, characterized in that: include: Main body, used for installation with the drone body; A mounting member, mounted on the main body, for mounting with the machine arm; A driving mechanism, used for driving the arm to expand or close; A limiting mechanism, used to limit the position of the arm relative to the drone body via the mounting member; Wherein, when the driving mechanism drives the machine arm to expand or close via the mounting member, the limiting mechanism limits the free movement of the machine arm via the mounting member.

2. The foldable drone arm shaft according to claim 1, characterized in that: The driving mechanism includes a power member and a driving member; The power member is used to drive the mounting member to move via the driving member, and the movement of the mounting member causes the machine arm to expand or close.

3. The foldable drone arm shaft according to claim 2, characterized in that: The power member is a driving motor, and the driving member is a rotating shaft; The driving motor drives the rotating shaft to rotate, and the rotating shaft drives the machine arm to rotate through the mounting member, so that the machine arm is expanded or closed.

4. The foldable drone arm shaft according to claim 3, characterized in that: The limiting mechanism includes a first limiting member and a pressing component; The first limiting member is fixedly mounted on the mounting member; The pressing assembly is mounted on the main body, and the pressing assembly always has a force to move toward the first limiting member; When the mounting member stops rotating, the pressing assembly limits the rotation of the first limiting member, and the first limiting member limits the rotation of the machine arm via the mounting member.

5. The foldable drone arm shaft according to claim 4, characterized in that: The pressing assembly includes an elastic member and a second limiting member; The elastic member applies a force to the second limiting member to move toward the first limiting member.

6. The foldable drone arm shaft according to claim 2, characterized in that: The driving mechanism further comprises a telescopic member and a rotating drum; The extension or retraction of the telescopic member drives the rotating drum to rotate, and the rotating drum drives the mounting member to rotate.

7. The foldable drone arm shaft according to claim 6, characterized in that: The rotating drum is provided with a spiral groove, and the telescopic member is provided with a round rod. The round rod is placed in the spiral groove, and the telescopic member moves axially in the spiral groove via the round rod to drive the rotating drum to rotate.

8. The foldable drone arm shaft according to claim 7, characterized in that: The limiting mechanism includes a limiting groove provided on the rotating drum, the limiting groove is arranged axially relative to the rotating drum, and the limiting grooves are respectively provided at both ends of the spiral groove and communicated with both ends of the spiral groove; When the round rod moves into the limiting groove, under the action of the limiting groove, the round rod blocks the rotation of the rotating drum, and the rotating drum stops the rotation of the mounting member.

9. The foldable drone arm shaft according to claim 1, characterized in that: The main body includes a fixing block and a supporting member; The fixing block is fixedly mounted on the UAV body; the limiting mechanism is arranged in the supporting member.

10. The foldable drone arm shaft according to claim 9, characterized in that: The support member is a hollow shell.

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