Paddle fixing structure of multi-rotor unmanned aerial vehicle

Abstract

The utility model discloses a paddle fixing structure of a multi-rotor unmanned aerial vehicle, which belongs to the technical field of unmanned aerial vehicles and comprises a driving mechanism, a supporting column is arranged above the driving mechanism, the top end of the supporting column is fixedly connected with a fixing disc, and the upper surface of the fixing disc is fixedly connected with a connecting block. A threaded groove is formed in the upper surface of the connecting block, a mounting sleeve is arranged above the connecting block, the bottom end of the mounting sleeve extends into the threaded groove, the outer surface of the mounting sleeve is in threaded connection with the inner wall of the threaded groove, two arc-shaped holes are formed in the bottom face of the fixing disc, and a connecting disc is fixedly connected to the outer surface of the mounting sleeve. And thread fixing grooves which are annularly arranged are formed in the bottom surface of the connecting disc. The paddle fixing structure of the multi-rotor unmanned aerial vehicle is provided with a multi-fixing structure when the paddle plate is installed, the problem that the paddle plate shakes and falls off in the flying process is solved, and the stability of the paddle plate of the multi-rotor unmanned aerial vehicle in the flying process is improved.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicles, in particular to a blade fixing structure of a multi-rotor unmanned aerial vehicle. Background Art

[0002] A drone is a powered aircraft that does not carry an operator, uses aerodynamics to generate lift, can fly autonomously or remotely, can be used once or recovered, and carries lethal or non-lethal payloads. Generally speaking, it is divided into three categories: fixed-wing drones, unmanned helicopters and multi-rotor drones. A multi-rotor drone is a special unmanned helicopter with three or more rotor axes.

[0003] At present, a Chinese patent with the announcement number CN206050073U discloses a blade fixing structure of a multi-rotor UAV, which is composed of a blade assembly, a blade clamp assembly, a copper ring and a motor to form a fixed structure body. The motor is provided with a motor shaft branch, and the surface of the shaft branch is provided with a thread. The blade assembly is composed of a blade and a mounting handle. However, the fastening of the blade by the locking nut in the above patent is poor, and it is difficult to perform multiple fixations when the blade is installed, which easily causes the blade to shake and fall off during flight, affecting the stability of the blade during flight. Therefore, a person skilled in the art provides a blade fixing structure of a multi-rotor UAV to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a blade fixing structure for a multi-rotor UAV to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blade fixing structure for a multi-rotor drone comprises a driving mechanism, a supporting column is provided above the driving mechanism, a fixing plate is fixedly connected to the top of the supporting column, a connecting block is fixedly connected to the upper surface of the fixing plate, a threaded groove is provided on the upper surface of the connecting block, a mounting sleeve is provided above the connecting block, the bottom end of the mounting sleeve extends to the inside of the threaded groove, the outer surface of the mounting sleeve is threadedly connected to the inner wall of the threaded groove, two arc holes are provided on the bottom surface of the fixing plate, the outer surface of the mounting sleeve is fixedly connected to the connecting plate, the bottom surface of the connecting plate is provided with an annularly arranged threaded fixing groove, two fixing screws are provided inside the two arc holes, and two blade plates are fixedly connected to the outer surface of the mounting sleeve.

[0007] As a further solution of the utility model: the bottom surfaces of the two blade plates are fixedly connected with reinforcement blocks, and the side surfaces of the two reinforcement blocks close to each other are fixedly connected to the outer surface of the mounting sleeve.

[0008] As a further solution of the utility model: a mounting support plate is fixedly connected to the left side of the driving mechanism, and two mounting openings are provided on the bottom surface of the mounting support plate.

[0009] As a further solution of the utility model: the driving mechanism comprises a driving cover, a driving motor is fixedly mounted on the inner bottom wall of the driving cover, and a driving shaft is fixedly mounted on the output end of the driving motor.

[0010] As a further solution of the utility model: a bearing ring is fixedly embedded on the upper surface of the drive cover, the top end of the drive shaft passes through the bearing ring and extends to the top of the bearing ring, the top end of the drive shaft is fixedly connected to the bottom end of the support column, and the outer surface of the drive cover is provided with a plurality of heat dissipation micropores.

[0011] As a further solution of the utility model: the bottom surface of the installation support plate is fixedly connected with a reinforcement support plate, and the right side surface of the reinforcement support plate is fixedly connected to the outer surface of the driving mechanism.

[0012] As a further solution of the utility model: the bottom surface of the connecting disk is in contact with the upper surface of the fixing disk, and the outer surface of the fixing screw is matched with the inner wall of the threaded fixing groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The blade fixing structure of the multi-rotor UAV can enable the mounting sleeve to rotate inside the fixing plate through the connecting block and the threaded groove on the top of the fixing plate, which will provide preliminary installation support for the blade plate. The fixing screws can be flexibly passed through the fixing plate through the arc hole on the fixing plate, and the fixing plate and the connecting plate can be firmly connected and fixed together with the threaded fixing groove on the bottom of the connecting plate, thereby providing a multiple fixing structure for the blade plate during installation, thereby avoiding the problem of the blade plate shaking and falling off during flight, and improving the stability of the blade plate during flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a front view of a blade fixing structure of a multi-rotor UAV;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of a bottom view of a blade fixing structure of a multi-rotor UAV;

[0017] Figure 3 A cross-sectional view of a side view of a blade fixing structure of a multi-rotor UAV;

[0018] Figure 4 The present invention is a cross-sectional view of a side view of a driving mechanism in a blade fixing structure of a multi-rotor UAV.

[0019] In the figure: 1. driving mechanism; 101. driving cover; 102. driving motor; 103. driving shaft; 104. bearing ring; 105. heat dissipation micropores; 2. supporting column; 3. fixing plate; 4. connecting block; 5. threaded groove; 6. mounting sleeve; 7. paddle plate; 8. arc hole; 9. fixing screw; 10. threaded fixing groove; 11. connecting plate; 12. reinforcement support plate; 13. mounting support plate; 14. mounting port; 15. reinforcement block. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] See also Figures 1 to 4In an embodiment of the utility model, a blade fixing structure of a multi-rotor drone comprises a driving mechanism 1, a supporting column 2 is provided above the driving mechanism 1, a fixing plate 3 is fixedly connected to the top of the supporting column 2, a connecting block 4 is fixedly connected to the upper surface of the fixing plate 3, a threaded groove 5 is provided on the upper surface of the connecting block 4, a mounting sleeve 6 is provided above the connecting block 4, the bottom end of the mounting sleeve 6 extends to the inside of the threaded groove 5, the outer surface of the mounting sleeve 6 is threadedly connected to the inner wall of the threaded groove 5, two arc holes 8 are provided on the bottom surface of the fixing plate 3, a connecting plate 11 is fixedly connected to the outer surface of the mounting sleeve 6, a threaded fixing groove 10 arranged in an annular manner is provided on the bottom surface of the connecting plate 11, two fixing screws 9 are provided inside the two arc holes 8, two blade plates 7 are fixedly connected to the outer surface of the mounting sleeve 6, by setting the fixing plate 3 and the connecting plate 11, and cooperating with the connecting block 4 and the threaded groove 5, the blade plates 7 can be preliminarily installed and supported, and by cooperating with the fixing screws 9 and the threaded fixing groove 10, the connection and fixation between the fixing plate 3 and the connecting plate 11 can be deepened.

[0023] The bottom surfaces of the two paddle plates 7 are fixedly connected with reinforcement blocks 15, and the side surfaces of the two reinforcement blocks 15 close to each other are fixedly connected to the outer surface of the mounting sleeve 6. The left side surface of the driving mechanism 1 is fixedly connected with a mounting support plate 13, and the bottom surface of the mounting support plate 13 is provided with two mounting openings 14. Through the provision of the reinforcement blocks 15, the connection between the paddle plates 7 and the mounting sleeve 6 can be deepened, and through the mounting support plate 13 and the mounting opening 14, the connection and fixation of the drone can be more flexible.

[0024] The driving mechanism 1 includes a driving cover 101, on the inner bottom wall of which a driving motor 102 is fixedly mounted, and on the output end of the driving motor 102 a driving shaft 103 is fixedly mounted, and on the upper surface of the driving cover 101 a bearing ring 104 is fixedly inlaid, and the top end of the driving shaft 103 passes through the bearing ring 104 and extends to the top of the bearing ring 104, and the top end of the driving shaft 103 is fixedly connected to the bottom end of the supporting column 2, and a plurality of heat dissipation micropores 105 are provided on the outer surface of the driving cover 101, and the power provided by the driving motor 102 inside the driving cover 101 and the cooperation with the driving shaft 103 can drive the fixed disk 3 and the paddle plate 7 to rotate, and can provide power for their rotation, and the setting of the heat dissipation micropores 105 will assist the driving motor 102 in dissipating heat.

[0025] The bottom surface of the mounting support plate 13 is fixedly connected with a reinforcing support plate 12, the right side surface of the reinforcing support plate 12 is fixedly connected to the outer surface of the driving mechanism 1, the bottom surface of the connecting plate 11 is in contact with the upper surface of the fixing plate 3, and the outer surface of the fixing screw 9 is adapted to the inner wall of the threaded fixing groove 10. The reinforcing support plate 12 can better support the mounting support plate 13, thereby enhancing the firmness of the mounting support plate 13 during support.

[0026] The working principle of the utility model is: when installing and fixing the paddle plate 7, first take the installation sleeve 6, and rotate the installation sleeve 6 downward on the surface of the connecting block 4, which will cause the bottom of the installation sleeve 6 to slowly rotate to the inside of the threaded groove 5, and then the installation sleeve 6 can be quickly installed on the top of the connecting block 4, then take the fixing screw 9, and pass the fixing screw 9 through the arc hole 8, and then rotate it to the inside of a suitable threaded fixing groove 10, and then deepen the connection between the fixing plate 3 and the bottom connecting plate 11 of the installation sleeve 6, so that the installation sleeve 6 and the paddle plate 7 will be firmly installed and fixed.

[0027] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and utility model concept of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blade fixing structure for a multi-rotor drone, comprising a driving mechanism (1), characterized in that: A support column (2) is provided above the driving mechanism (1), the top of the support column (2) is fixedly connected to a fixing plate (3), the upper surface of the fixing plate (3) is fixedly connected to a connecting block (4), the upper surface of the connecting block (4) is provided with a threaded groove (5), a mounting sleeve (6) is provided above the connecting block (4), the bottom end of the mounting sleeve (6) extends to the inside of the threaded groove (5), the outer surface of the mounting sleeve (6) is threadedly connected to the inner wall of the threaded groove (5), the bottom surface of the fixing plate (3) is provided with two arc holes (8), the outer surface of the mounting sleeve (6) is fixedly connected to a connecting plate (11), the bottom surface of the connecting plate (11) is provided with annularly arranged threaded fixing grooves (10), the inside of the two arc holes (8) are each provided with two fixing screws (9), and the outer surface of the mounting sleeve (6) is fixedly connected to two paddle plates (7).

2. The blade fixing structure of a multi-rotor UAV according to claim 1, characterized in that: The bottom surfaces of the two paddle plates (7) are fixedly connected to a reinforcement block (15), and the side surfaces of the two reinforcement blocks (15) that are close to each other are fixedly connected to the outer surface of the mounting sleeve (6).

3. The blade fixing structure of a multi-rotor UAV according to claim 1, characterized in that: A mounting support plate (13) is fixedly connected to the left side of the driving mechanism (1), and two mounting openings (14) are provided on the bottom surface of the mounting support plate (13).

4. The blade fixing structure of a multi-rotor UAV according to claim 1, characterized in that: The driving mechanism (1) comprises a driving cover (101), a driving motor (102) is fixedly mounted on the inner bottom wall of the driving cover (101), and a driving shaft (103) is fixedly mounted on the output end of the driving motor (102).

5. The blade fixing structure of a multi-rotor UAV according to claim 4, characterized in that: A bearing ring (104) is fixedly embedded on the upper surface of the driving cover (101); the top end of the driving shaft (103) passes through the bearing ring (104) and extends to the top of the bearing ring (104); the top end of the driving shaft (103) is fixedly connected to the bottom end of the support column (2); and a plurality of heat dissipation micropores (105) are provided on the outer surface of the driving cover (101).

6. The blade fixing structure of a multi-rotor UAV according to claim 3, characterized in that: The bottom surface of the mounting support plate (13) is fixedly connected to a reinforcement support plate (12), and the right side surface of the reinforcement support plate (12) is fixedly connected to the outer surface of the driving mechanism (1).

7. The blade fixing structure of a multi-rotor UAV according to claim 1, characterized in that: The bottom surface of the connecting plate (11) contacts the upper surface of the fixing plate (3), and the outer surface of the fixing screw (9) matches the inner wall of the threaded fixing groove (10).

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