Quick-release locking device for unmanned aerial vehicle arm

Abstract

The utility model belongs to the field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle arm quick-release locking device which comprises an arm female head, a sliding block, a positioning piece, a connecting piece and an arm male head. A polygonal groove is formed in the upper end face of the arm female head, the sliding block is installed in the polygonal groove, the positioning piece is installed in a polygonal through hole in the sliding block, the arm male head is embedded into the arm female head, and the connecting piece is arranged on the outer side of the arm male head in a sleeving mode and is in threaded connection with the arm female head. The sliding block moves upwards, the friction force between the sliding block and the connecting piece is increased, the connecting piece is prevented from being loosened, the purpose of forward feedback type long-time anti-loosening locking is achieved, during unlocking, the connecting piece is rotated, the machine arm male head is pulled outwards with force, the sliding block moves upwards for unlocking, the machine arm male head is completely disengaged, and quick release is completed, the structure is compact, the cost is low, the reliability of the unmanned aerial vehicle is improved, and the service life of the unmanned aerial vehicle is prolonged. The technical problems of structural strength and reliability caused by quick disassembly of an existing unmanned aerial vehicle are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles, and in particular relates to a quick-release locking device for an arm of an unmanned aerial vehicle. Background Art

[0002] UAVs are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices. Due to their unmanned characteristics, they can prevent people from being harmed in dangerous environments, so they can replace traditional aircraft to patrol and investigate dangerous areas. With the advancement of UAV control technology and the continuous development of their structure towards lightweight and miniaturization, they have gradually shifted from military reconnaissance aircraft and target aircraft to the civilian field, and are widely used in aerial photography, agriculture, transportation, surveying and mapping and other industries. They are becoming more and more important and prominent in the context of modern social information.

[0003] Large multi-rotor drones generally have a large unfolding area, which makes them inconvenient to store and transport. The preferred structure for multi-rotors is the ability to be quickly disassembled and assembled. Quick disassembly will bring risks to structural strength and reliability. Drones often crash due to loose assembly of quick-disassembly structures, causing important parts to loosen in the air, causing different degrees of property losses and posing a threat to ground buildings and personnel. How to achieve both quick disassembly and high reliability of the structure after quick disassembly and assembly is a difficult problem in the drone field. Utility Model Content

[0004] The utility model aims to solve the technical problems of structural strength and reliability caused by the quick disassembly of the existing UAV, and to provide a UAV machine arm quick disassembly locking device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions to achieve them: a quick-release locking device for an unmanned aerial vehicle arm, comprising an arm female head, a slider, a positioning piece, a connecting piece and an arm male head; the arm male head is embedded in the arm female head, the slider is arranged on one side of the arm female head, the positioning piece is arranged in the slider, and the connecting piece is sleeved on the outside of the arm male head and fixedly connected to the arm female head.

[0006] Furthermore, a protrusion is provided on the outside of the male head of the arm, dividing the male head of the arm into a first cavity and a second cavity; the diameter of the first cavity is smaller than the diameter of the second cavity, and the first cavity is embedded in the female head of the arm; the connecting piece is sleeved on the outside of the second cavity, with the opening facing the first cavity.

[0007] Furthermore, a positioning groove is provided on the side wall of the first cavity, and the positioning groove is communicated with the first cavity.

[0008] Furthermore, the arm female head is provided with an external thread, and the upper end surface of the arm female head is a plane.

[0009] Furthermore, a polygonal groove is provided on the upper end surface of the arm female head, and the sliding block is adapted to the polygonal groove and installed in the polygonal groove.

[0010] Furthermore, a chamfer is provided at the lower end of the sliding block and is engaged with the positioning groove.

[0011] Furthermore, a polygonal through hole is arranged in the slider, and the positioning member is arranged in the polygonal through hole; the axis of the positioning member and the axis of the polygonal through hole are perpendicular to each other.

[0012] Furthermore, the connecting piece is provided with an internal thread, and the connecting piece is threadedly connected to the female head of the machine arm.

[0013] Furthermore, the length of the first cavity is smaller than the length of the arm female connector.

[0014] Furthermore, the positioning member is a limiting cylindrical pin, and the connecting member is a hand-screw nut.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] 1. The utility model discloses a quick-release locking device for an unmanned aerial vehicle arm. The lower end of the slider is provided with a chamfer, which is engaged with a positioning groove. When the male head of the arm is displaced, the slider moves upward to increase the friction between the connecting piece and the slider, thereby preventing the connecting piece from loosening.

[0017] 2. The utility model provides a quick-release locking device for the arm of a UAV, which has a compact structure and low cost, does not require mechanical springs or complex transmission mechanisms, reduces failure points and maintenance costs, improves the reliability of the UAV, and can continuously maintain a locked state in a high-intensity, long-term vibration environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an exploded view of the quick-release locking device for the UAV arm of the utility model;

[0020] Figure 2 The utility model is a schematic diagram of the structure of the quick-release locking device for the UAV arm.

[0021] Reference numerals:

[0022] 1-female head of machine arm; 11-polygonal groove; 2-slider; 21-polygonal through hole; 3-positioning piece; 4-connecting piece; 5-male head of machine arm; 51-first cavity; 511-positioning groove; 52-second cavity. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] The utility model is further described in detail below with reference to the accompanying drawings:

[0026] The utility model provides a quick-release locking device for an unmanned aerial vehicle arm, comprising an arm female head 1, a slider 2, a positioning member 3, a connecting member 4 and an arm male head 5. The arm female head 1 is installed on one side of a bracket, and the arm female head 1 is a hollow structure with a thread on the outer surface. Figure 1 As shown, the side wall of the upper end of the arm female head 1 is partially cut off, and the thickness of the cut is less than the thickness of the side wall, so that the upper end surface of the arm female head 1 is a plane. A polygonal groove 11 is provided on the upper end surface, and a certain distance is set between the right end of the polygonal groove 11 and the end surface of the arm female head 1 to prevent the slider 2 from falling off. In this embodiment, the polygonal groove 11 is elliptical and communicates with the inner cavity, and a wall is provided on the upper end of the polygonal groove 11 to fix and support the slider 2.

[0027] The slider 2 is arranged in the polygonal groove 11, and the lower end of the slider 2 is provided with a chamfer, which is an arc or wedge-shaped chamfer in this embodiment, so that the arm male head 5 can be smoothly inserted and removed. A polygonal through hole 21 is arranged inside the slider 2, specifically an oblong through hole, and the positioning member 3 is installed in the polygonal through hole 21, so that the positioning member 3 is limited to slide up and down without falling off.

[0028] The positioning member 3 is a limiting cylindrical pin, and the diameter of the positioning member 3 matches the size of the polygonal through hole 21 .

[0029] The arm male connector 5 is arranged on one side of the arm female connector 1, and the arm male connector 5 can be embedded in the arm female connector 1, such as Figure 2 As shown, a protrusion is provided on the arm male head 5, and the end face of the arm female head 1 is connected to the left end face of the protrusion, in this embodiment. At the same time, the protrusion divides the arm male head 5 into a first cavity 51 and a second cavity 52, the first cavity 51 is located on the left, and the second cavity 52 is located on the right, and the diameter of the first cavity 51 is smaller than the diameter of the second cavity 52, and a positioning groove 511 is provided on the side wall of the first cavity 51, and the positioning groove 511 is provided with a chamfer that matches the chamfer of the slider 2, which serves the purpose of positioning and locking. Finally, the length of the first cavity 51 is smaller than the length of the arm female head 1, ensuring that the first cavity of the arm male head 5 can be embedded in the arm female head 1, and the slider 2 can be mutually engaged with the positioning groove 511.

[0030] The connector 4 is arranged outside the arm male head 5, and the connector 4 can slide left and right on the outer surface of the second cavity 52, slide to the raised position on the left side, and be fixedly connected with the arm female head 1, where the fixed connection is a threaded connection. An internal thread is arranged on the connector 4, and the connector 4 is a hand-screw nut, with an opening facing one side of the arm female head 1, and a polygonal through hole adapted to the second cavity 52 is arranged on the end face of the connector 4.

[0031] Working principle:

[0032] First, insert the first cavity 51 of the male head 5 into the female head 1, and manually rotate the connector 4. During the rotation, the connector 4 pushes the slider 2 to slide down into the positioning groove 511, and the male head 5 is locked. During the long flight of the drone, there is a risk that the connector 4 will loosen during the flight vibration. Figure 2As shown, the arm male connector 5 will slide to the right and retreat. At this time, the chamfer below the slider 2 will make the slider 2 slide upward. The sliding will make the top of the slider 2 press against the inner wall of the connector 4. The friction between the two will increase, preventing the connector 4 from continuing to loosen. If the connector 4 does not loosen, the slider 2 will continue to lock the arm male connector 5, thus achieving the purpose of positive feedback type continuous anti-loosening locking for a long time. When unlocking, completely loosen the connector 4, and pull the arm male connector 5 outward with force. At this time, the slider 2 moves up to unlock, and the arm male connector 5 is completely disengaged, achieving the purpose of unlocking and quick release.

[0033] The utility model discloses a quick-release locking device for an unmanned aerial vehicle arm, which has a simple structure, is flexible and reliable, has no spring-assisted components, can continuously maintain a locked state in a high-intensity and long-term vibration environment, and improves the reliability of the unmanned aerial vehicle.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A quick-release locking device for an unmanned aerial vehicle arm, characterized in that: It comprises a machine arm female head (1), a slider (2), a positioning piece (3), a connecting piece (4) and a machine arm male head (5); The arm male head (5) is embedded in the arm female head (1), the slider (2) is arranged on one side of the arm female head (1), the positioning member (3) is arranged inside the slider (2), and the connecting member (4) is sleeved on the outside of the arm male head (5) and fixedly connected to the arm female head (1).

2. The UAV arm quick-release locking device according to claim 1, characterized in that: A protrusion is provided on the outer side of the arm male head (5), dividing the arm male head (5) into a first cavity (51) and a second cavity (52); The diameter of the first cavity (51) is smaller than the diameter of the second cavity (52), and the first cavity (51) is embedded in the arm female head (1); the connecting piece (4) is sleeved on the outside of the second cavity (52) and has an opening facing the first cavity (51).

3. The quick-release locking device for drone arms according to claim 2, characterized in that: A positioning groove (511) is provided on the side wall of the first cavity (51), and the positioning groove (511) and the first cavity (51) are in communication with each other.

4. The quick-release locking device for drone arms according to claim 1, characterized in that: The arm female head (1) is provided with an external thread, and the upper end surface of the arm female head (1) is a plane.

5. The UAV arm quick-release locking device according to claim 1 or 4, characterized in that: The upper end surface of the arm female head (1) is provided with a polygonal groove (11), and the sliding block (2) is adapted to the polygonal groove (11) and is installed in the polygonal groove (11).

6. The quick-release locking device for drone arms according to claim 5, characterized in that: The lower end of the sliding block (2) is provided with a chamfer, which is engaged with the positioning groove (511).

7. The quick-release locking device for drone arms according to claim 6, characterized in that: A polygonal through hole (21) is provided in the sliding block (2), and the positioning member (3) is provided in the polygonal through hole (21); The axis of the positioning member (3) and the axis of the polygonal through hole (21) are perpendicular to each other.

8. The UAV arm quick-release locking device according to claim 2, characterized in that: The connecting piece (4) is provided with an internal thread, and the connecting piece (4) is threadedly connected to the machine arm female head (1).

9. The UAV arm quick-release locking device according to claim 2, characterized in that: The length of the first cavity (51) is less than the length of the arm female head (1).

10. The UAV arm quick-release locking device according to claim 6, characterized in that: The positioning member (3) is a limiting cylindrical pin, and the connecting member (4) is a hand-screwed nut.

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