Propeller assembly for unmanned aerial vehicle and unmanned aerial vehicle

Abstract

The propeller assembly comprises a propeller body, a connecting assembly and a fixing assembly, the propeller body comprises blades and a connecting block, the blades are connected with the connecting block, the connecting block is provided with a first butt-joint structure, the connecting assembly is provided with a second butt-joint structure and a mounting base, and the mounting base is provided with a first butt-joint structure and a second butt-joint structure; the second butt joint structure is connected with the mounting base, the second butt joint structure and the first butt joint structure are in butt joint in the direction of the rotating axis of the propeller blade, and the fixing assembly locks the connecting block on the mounting base along the rotating axis of the propeller body. The connecting assembly and the fixing assembly are arranged, the fixing assembly locks the propeller body so that the propeller body can rotate along with the fixing assembly, the connecting assembly and the fixing assembly fix the propeller body, the propeller body can be disassembled by separating the connecting assembly and the fixing assembly, and operation is easy and rapid in the assembling and disassembling process. And the fault rate is low and the reliability is high.

Description

Technical Field

[0001] This invention relates to the field of drone propeller technology, and more particularly to a propeller assembly for drones and a drone. Background Technology

[0002] With the development of industrial drones, drones are being integrated into national economic production and daily life on a large scale. Compound-wing drones, with their ability to take off and land without dedicated runways and speeds and ranges comparable to fixed-wing drones, are widely used in surveying, security, and border patrol. Almost all compound-wing drones adopt a modular design; after system storage, they can be housed in a protective case for rapid transportation and deployment.

[0003] In existing technologies, existing propeller locking mechanisms often employ complex structures such as torsion shafts, return springs, and ratchet wheels. These mechanisms suffer from drawbacks such as structural complexity, complex mechanisms, high requirements for structural processing, and overall weight. Common propellers are typically secured with multiple screws, making installation and disassembly time-consuming and labor-intensive. Summary of the Invention

[0004] This invention provides a propeller assembly and a drone for use in unmanned aerial vehicles (UAVs), which solves the technical problem that common propellers are usually fixed with multiple screws, making installation or disassembly time-consuming and labor-intensive.

[0005] The present invention provides a propeller assembly for a drone, comprising:

[0006] The propeller body includes blades and a connecting block, the blades are connected to the connecting block, and the connecting block is provided with a first docking structure; A connecting assembly having a second docking structure and a mounting base, the second docking structure being connected to the mounting base, the second docking structure being docked with the first docking structure along the direction of the blade rotation axis to restrict relative rotation between the propeller body and the mounting base about the propeller body rotation axis; A fixing component secures the connecting block to the mounting base along the rotation axis of the propeller body.

[0007] In one embodiment of the present invention, the second docking structure includes at least two limiting members, each of the limiting members being connected to the mounting base, and each of the limiting members extending in a direction toward the propeller body; The first docking structure includes at least two locking holes, and the end of the limiting member away from the mounting base is located in the corresponding locking hole.

[0008] In one embodiment of the present invention, the mounting base is provided with at least two positioning holes, the number of positioning holes is greater than or equal to the number of limiting members, and at least two of the limiting members are disposed in the corresponding positioning holes.

[0009] In one embodiment of the present invention, the mounting base is provided with a mounting platform protruding toward the propeller body, and the positioning hole is provided on the mounting platform.

[0010] In one embodiment of the present invention, the fixing component includes a clamping plate and a fixing member. The clamping plate has a through hole in the middle. The propeller body is located between the clamping plate and the mounting base. The connecting block has a connecting hole that passes through the connecting block along the rotation axis of the propeller body. The fixing member passes through the through hole and the connecting hole and is connected to the mounting base.

[0011] In one embodiment of the present invention, an elastic gasket is further provided between the fixing member and the clamping plate.

[0012] In one embodiment of the present invention, the mounting base is provided with a protruding fixing platform facing the propeller body, and the fixing platform is provided with a recessed fixing hole on the surface away from the mounting base, and the fixing member is detachably disposed in the fixing hole.

[0013] In one embodiment of the present invention, a weight-reducing structure is provided on the fixing platform, and the weight-reducing structure is located between two adjacent positioning holes.

[0014] In one embodiment of the present invention, the mounting base is provided with a set of screw holes for fixing the mounting base.

[0015] The present invention also provides a drone, including the above-described propeller assembly for a drone, and further including a drive unit connected to the mounting base.

[0016] The beneficial effects of this invention are as follows: This invention proposes a propeller assembly for unmanned aerial vehicles (UAVs), which includes a connecting component and a fixing component. The fixing component locks the propeller body, allowing it to rotate with the fixing component. The connecting component and the fixing component secure the propeller body. The propeller body can be disassembled by separating the connecting component and the fixing component. The assembly and disassembly processes are simple and quick. Furthermore, it has a low failure rate and high reliability. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] In the attached diagram: Figure 1 This is an exploded view of the overall structure of a propeller assembly according to an embodiment of the present invention; Figure 2 This is an explosive schematic diagram of removing the propeller body according to one embodiment of the present invention.

[0019] The attached figures are labeled as follows: 1. Propeller body; 11. Blade; 12. Connecting block; 121. First docking structure; 122. Connecting hole; 2. Connecting assembly; 21. Second docking structure; 23. Mounting base; 25. Positioning hole; 26. Mounting platform; 27. Fixing platform; 28. Fixing hole; 3. Fixing assembly; 31. Pressure plate; 32. Fixing component; 33. Elastic gasket; 4. Driving component. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0023] Please see Figure 1 and Figure 2An embodiment of this application provides a propeller assembly for an unmanned aerial vehicle (UAV), including a propeller body 1, a connecting assembly 2, and a fixing assembly 3. The propeller body 1 is provided with blades 11 and a connecting block 12, which are connected. The connecting block 12 is provided with a first docking structure 121. The connecting assembly 2 has a second docking structure 21 and a mounting base 23, which dock with the first docking structure 121. The propeller body 1 is locked to the mounting base 23 along the rotation direction of the propeller body 1 by the second docking structure 21 and the first docking structure 121. The positioning allows the propeller body 1 to rotate synchronously with the mounting base 23. The fixing component 3 connects to the connecting component 2, locking the connecting block 12 onto the mounting base 23 along the rotation axis of the propeller body 1. The fixing component 3, connected to the connecting component 2, limits the vertical movement of the propeller body 1. The propeller body 1 is fixed by the connecting component 2 and the fixing component 3, enabling rapid loading. When the propeller body 1 needs to be disassembled or repaired, simply separating the connecting component 2 and the fixing component 3 allows for easy disassembly. The assembly and disassembly processes are simple and quick, with a low failure rate and high reliability.

[0024] Specifically, in one optional embodiment of this application, the second docking structure 21 includes at least two limiting members. The mounting base 23 is a disc-shaped structure. Each limiting member is connected to the mounting base 23, and each limiting member is arranged around the center of the mounting base 23 to form the second docking structure 21. Each limiting member protrudes in the direction toward the propeller body 1. The limiting member is a cylindrical structure. The propeller body 1 is provided with at least two locking holes to form the first docking structure 121. The end of the limiting member away from the mounting base 23 is located in the corresponding locking hole. Each limiting member extends into the corresponding locking hole, causing the propeller body 1 to rotate with the mounting base 23.

[0025] In this embodiment, four limiting members are provided, and the four limiting members are arranged around the center of the mounting base 23 at a 90-degree interval between each other, so that the propeller body 1 is subjected to more balanced force.

[0026] In another embodiment, the second docking structure 21 includes at least two locking holes, and the first docking structure 13 includes at least two limiting members. Each limiting member is connected to the connecting block 12. Each limiting member is a cylindrical structure and is located in the corresponding locking hole. Each limiting member extends into the corresponding locking hole, driving the propeller body 1 to rotate with the mounting base 23.

[0027] Specifically, in one optional embodiment of this application, the mounting base 23 is provided with at least two positioning holes 25, all of which are circular holes and threaded holes. The limiting member is a circular threaded rod. The number of positioning holes 25 is greater than or equal to the number of limiting members. At least two limiting members are set in the corresponding positioning holes 25. The limiting members are detachable for easy maintenance or replacement.

[0028] In this embodiment, four positioning holes 25 are provided, and the four positioning holes 25 are arranged around the center of the mounting base 23 at a 90-degree interval between each other, so that the propeller body 1 is subjected to more balanced force.

[0029] Specifically, in one optional embodiment of this application, the mounting base 23 is provided with a protruding mounting platform 26 facing the propeller body 1, and the positioning hole 25 is provided on the surface of the mounting platform 26 away from the drive member 4, increasing the depth of the positioning hole 25, thereby making the connection between the limiting member and the mounting base 23 more stable.

[0030] Specifically, in an optional embodiment of this application, the fixing component 3 includes a clamping plate 31 and a fixing member 32. The clamping plate 31 has a through hole in the middle, and the connecting block 12 has a connecting hole 122. The connecting hole 122 penetrates the connecting block 12 and is located at the center of the connecting block 12. The through hole and the connecting hole 122 are coaxially arranged. The fixing member 32 is a fixing bolt. The screw part of the fixing bolt passes through the through hole and the connecting hole 122 and connects to the connecting component 2. The large end of the fixing bolt presses the clamping plate 31 onto the propeller body 1. The propeller body 1 is located between the clamping plate 31 and the mounting base 23. Only the fixing member 32 is needed to fix the propeller body 1, making installation and disassembly more convenient.

[0031] Specifically, in an optional embodiment of this application, the mounting base 23 is provided with a protruding fixing platform 27 facing the propeller body 1, and the fixing platform 27 is provided with a recessed fixing hole 28 on the surface away from the mounting base 23, and the fixing member 32 is detachably disposed in the fixing hole 28.

[0032] Specifically, in an optional embodiment of this application, a weight-reducing structure is provided on the fixed platform 27. The weight-reducing structure is located between two adjacent positioning holes 25. The fixed platform 27 includes a first boss and four second bosses. The first boss is located at the center of the mounting base 23 and is arranged as an annular platform around the fixed platform 27. The four second bosses are respectively arranged in the four directions of the first boss. The four second bosses are spaced 90 degrees apart, and four weight-reducing structures are formed between the four second bosses to reduce the overall weight.

[0033] Specifically, in an optional embodiment of this application, the mounting base 23 is provided with a set of screw holes for connecting with the drive component 4, which facilitates fixing the mounting base 23. The set of screw holes includes four screw holes, which are provided on four weight-reducing structures.

[0034] Specifically, in one optional embodiment of this application, an elastic gasket 33 is also provided between the fastener 32 and the clamping plate 31. When the fastener 32 tends to loosen due to vibration, impact or temperature change, the elastic rebound force of the elastic gasket 33 will offset the loosening gap and maintain the locking force.

[0035] This application also provides a drone, including the aforementioned propeller assembly for drones, and a drive unit 4 connected to the mounting base 23.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A propeller assembly for an unmanned aerial vehicle (UAV), characterized in that, include: The propeller body includes blades and a connecting block, the blades are connected to the connecting block, and the connecting block is provided with a first docking structure; A connecting assembly having a second docking structure and a mounting base, the second docking structure being connected to the mounting base, the second docking structure being docked with the first docking structure along the direction of the blade rotation axis to restrict relative rotation between the propeller body and the mounting base about the propeller body rotation axis; A fixing component secures the connecting block to the mounting base along the rotation axis of the propeller body.

2. A propeller assembly for an unmanned aerial vehicle according to claim 1, characterized in that: The second docking structure includes at least two limiting members, each of which is connected to the mounting base and extends in a direction toward the propeller body; The first docking structure includes at least two locking holes, and the end of the limiting member away from the mounting base is located in the corresponding locking hole.

3. A propeller assembly for an unmanned aerial vehicle according to claim 2, characterized in that: The mounting base is provided with at least two positioning holes, the number of positioning holes is greater than or equal to the number of limiting members, and at least two of the limiting members are disposed in the corresponding positioning holes.

4. A propeller assembly for an unmanned aerial vehicle according to claim 3, characterized in that: The mounting base is provided with a mounting platform that protrudes toward the propeller body, and the positioning hole is provided on the mounting platform.

5. A propeller assembly for an unmanned aerial vehicle according to claim 3, characterized in that: The fixing component includes a clamping plate and a fixing member. The clamping plate has a through hole in the middle. The propeller body is located between the clamping plate and the mounting base. The connecting block has a connecting hole that passes through the connecting block along the rotation axis of the propeller body. The fixing member passes through the through hole and the connecting hole and is connected to the mounting base.

6. A propeller assembly for an unmanned aerial vehicle according to claim 5, characterized in that: An elastic gasket is also provided between the fixing member and the clamping plate.

7. A propeller assembly for an unmanned aerial vehicle according to claim 3, characterized in that: The mounting base is provided with a protruding fixing platform facing the propeller body. The fixing platform has a recessed fixing hole on the side away from the mounting base, and the fixing member is detachably installed in the fixing hole.

8. A propeller assembly for an unmanned aerial vehicle according to claim 7, characterized in that: A weight-reducing structure is provided on the fixed platform, and the weight-reducing structure is located between two adjacent positioning holes.

9. A propeller assembly for an unmanned aerial vehicle according to claim 3, characterized in that: The mounting base is provided with a set of screw holes for fixing the mounting base.

10. A drone, characterized in that, The device includes a propeller assembly for a drone as described in claims 1-9, and further includes a drive unit connected to the mounting base.

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