Unmanned aerial vehicle injection molded propeller

Abstract

The unmanned aerial vehicle injection molding propeller disclosed by the application comprises a blade and a rigid body, the rigid body comprises a plurality of protruding structures, a shaft hole, a shaft hole end face and a combination groove; the rigid body is placed in the injection mold of the blade during injection molding, the blade is directly injection molded to wrap the rigid body, and the blade and the rigid body are fixedly connected through the combination groove. The propeller has the beneficial effects that the connection stability is improved, the blade and the rigid body are connected through the combination groove, the rigid body is made of carbon fiber composite material, the connection reliability is improved, the propeller structure is complete, the flight stability is ensured, the positioning is accurate and reliable, the protruding structure and the shaft hole of the rigid body realize accurate positioning in the injection mold, the rigid body is prevented from deviating, and the propeller structure consistency is ensured, the performance is optimized, the rigid body made of carbon fiber composite material is embedded in the blade close to the root position, the blade can be effectively strengthened, the overall strength of the propeller is improved, the overall weight of the propeller can be controlled, and the performance of the unmanned aerial vehicle is optimized.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and specifically provides an injection-molded UAV propeller. Background Technology

[0002] As a key component for drone flight, the structural stability, strength, and manufacturing process of drone propellers have a significant impact on drone performance. Traditional drone propellers have certain shortcomings in production and structural design. For example, the connection reliability between the blades and rigid components is not good, and the positioning accuracy of the rigid body is difficult to guarantee during injection molding. This affects the overall performance and service life of the propeller, and cannot well meet the high strength, high stability, and efficient production requirements of drone propellers.

[0003] Therefore, how to design a new injection-molded propeller structure for drones is a technical problem to be solved. Utility Model Content

[0004] Therefore, it is necessary to provide a drone injection-molded propeller that is low in cost, lightweight, high in strength, and stable in performance to address the existing problems.

[0005] This application provides an injection-molded propeller for a drone, including a blade and a rigid body. The rigid body includes multiple protruding structures, a shaft hole, a through-hole end face, and a mating groove. During injection molding, the rigid body is first placed in the injection mold of the blade, and the blade is directly injection molded and wrapped around the rigid body. The blade and the rigid body are fixedly connected by the mating groove.

[0006] Preferably, the rigid body is positioned within the injection mold through the protruding structure and the shaft hole.

[0007] Preferably, the rigid body is a carbon fiber composite material.

[0008] Preferably, the rigid body is embedded inside the blade near the root.

[0009] Preferably, the protrusion structure includes a first protrusion structure and a second protrusion structure, wherein the first protrusion structure is disposed at the first root of the rigid body, and the second protrusion structure is disposed at the second root of the rigid body.

[0010] Preferably, the shaft hole is located at the first root portion.

[0011] Preferably, the first protrusion structure is evenly distributed around the side of the shaft hole at the first root.

[0012] Preferably, the second protrusion structure is evenly distributed on the upper and lower sides of the second root of the rigid body.

[0013] Compared with the prior art, the technical solution disclosed in this utility model has the following beneficial effects:

[0014] (1) Improved connection stability: The blades and the rigid body are fixedly connected by a joint groove, and the rigid body is made of carbon fiber composite material. This connection method and material selection greatly improves the stability and reliability of the connection between the blades and the rigid body, so that the propeller can maintain structural integrity under high-speed rotation and other working conditions, and is not prone to loosening and other problems, thereby ensuring the stability of the UAV flight.

[0015] (2) Precise and reliable positioning: With the help of the protruding structure and shaft hole of the rigid body itself, precise positioning is achieved in the injection mold, which effectively avoids the rigid body from shifting during the injection process, ensuring that the structure of each produced propeller is consistent and improving the production quality and yield of the product.

[0016] (3) Performance optimization: The rigid body made of carbon fiber composite material is lightweight and high-strength. It is embedded in the blade near the root, which can effectively strengthen the blade root, improve the overall strength and fatigue resistance of the propeller, and control the overall weight of the propeller. This helps the UAV achieve longer endurance and more flexible flight, thus optimizing the flight performance of the UAV. Attached Figure Description

[0017] The exemplary embodiments of this utility model can be more fully understood by referring to the following accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 The present application provides an outline drawing and perspective view of an injection-molded drone propeller according to an exemplary embodiment.

[0019] Figure 2 These are side and front views of a rigid body provided according to an exemplary embodiment of this application;

[0020] Figure 3 This is a partially enlarged view of an injection-molded drone propeller provided according to an exemplary embodiment of this application. Detailed Implementation

[0021] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Reference Figure 1 This application provides an injection-molded propeller for a drone. The propeller includes blades 1 and a rigid body 2. In a preferred embodiment, the blades 1 may be multiple, but only one is shown in this application as an example.

[0026] Specifically, the rigid body 1 includes multiple protruding structures (including a first protruding structure 21 and a second protruding structure 24), a shaft hole 22, a shaft hole end face 23, and a mating groove 25.

[0027] In this embodiment, the rigid body 2 is embedded in the root of the blade 1, and the shaft hole 22 at the root of the rigid body replaces the shaft hole of the blade 1. At the same time, a connecting groove 25 structure is designed at the end of the rigid body.

[0028] In the specific manufacturing process, during injection molding, the rigid body 2 is first placed inside the injection mold of the blade 1. The blade is then directly injection molded and wrapped around the rigid body 2. The blade 1 and the rigid body 2 are fixedly connected by a connecting groove 25. Specifically, the rigid body is made of carbon fiber composite material, and its surface has 8-12 protruding structures. The outer surface geometry of the protruding structures is equivalent to the corresponding geometry of the blade 1. Before injection molding, the rigid body 2 is placed in the injection mold of the blade 1. The protruding structures on the surface of the rigid body 2 and the central shaft hole are used to position the rigid body 2 in the mold and fix it inside the mold. After injection molding is completed, the rigid body 2 is embedded inside the blade 1.

[0029] This application embeds a rigid body inside, especially at the root, of a conventional injection-molded propeller blade, resulting in higher strength and better performance of the injection-molded propeller blade.

[0030] like Figure 2 As shown, four first protrusions 21 and one shaft hole 22 are evenly distributed on the side of the first root of the rigid body 2, and eight second protrusions are evenly distributed on the upper and lower sides of the second root. Through the above structure, the rigid body 2 can be completely positioned in the injection mold of the blade 1.

[0031] like Figure 3 As shown, after the rigid body 2 is formed, it is embedded inside the blade 1. The first protrusion structure 21, the second protrusion structure 24, the shaft hole 22 and the shaft hole end face 23 will replace the corresponding positions of the blade 1. Therefore, the blade 1 is embedded in the connecting groove 25, making the overall connection more reliable. Among them, the through hole end face 23 refers to the two end faces of the shaft hole 22 at the first root of the rigid body 2.

[0032] Specifically, the rigid body 2 of this application has a higher overall strength than the blade 1. Embedding the rigid body 2 inside the blade 1 can enhance the rigidity and strength of the injection-molded blade. At the same time, replacing the shaft hole of the blade 1 with the shaft hole 22 of the rigid body 2 can enhance the strength of the shaft hole of the injection-molded blade 1, and increase the service life and performance of the blade 1. Finally, the connecting groove 25 structure at the second root of the rigid body 2 can better connect the rigid body 2 with the blade 1, and the force of the blade 1 can be better transmitted to the rigid body 2 during operation.

[0033] Compared with the prior art, the technical solution disclosed in this utility model has the following beneficial effects:

[0034] (1) Improved connection stability: The blades and the rigid body are fixedly connected by a joint groove, and the rigid body is made of carbon fiber composite material. This connection method and material selection greatly improves the stability and reliability of the connection between the blades and the rigid body, so that the propeller can maintain structural integrity under high-speed rotation and other working conditions, and is not prone to loosening and other problems, thereby ensuring the stability of the UAV flight.

[0035] (2) Precise and reliable positioning: With the help of the protruding structure and shaft hole of the rigid body itself, precise positioning is achieved in the injection mold, which effectively avoids the rigid body from shifting during the injection process, ensuring that the structure of each produced propeller is consistent and improving the production quality and yield of the product.

[0036] (3) Performance optimization: The rigid body made of carbon fiber composite material is lightweight and high-strength. It is embedded in the blade near the root, which can effectively strengthen the blade root, improve the overall strength and fatigue resistance of the propeller, and control the overall weight of the propeller. This helps the UAV achieve longer endurance and more flexible flight, thus optimizing the flight performance of the UAV.

[0037] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0038] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means at least two.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drone injection-molded propeller, comprising blades and a rigid body, characterized in that, The rigid body includes multiple protruding structures, a shaft hole, a shaft hole end face, and a connecting groove; during injection molding, the rigid body is first placed in the injection mold of the blade, and the blade is directly injection molded and wrapped around the rigid body. The blade and the rigid body are fixedly connected by the connecting groove.

2. The injection-molded propeller for a drone according to claim 1, characterized in that, The rigid body is positioned within the injection mold through the protruding structure and the shaft hole.

3. The injection-molded propeller for a drone according to claim 1, characterized in that, The rigid body is a carbon fiber composite material.

4. The injection-molded propeller for a drone according to claim 1, characterized in that, The rigid body is embedded inside the blade near the root.

5. The injection-molded propeller for a drone according to claim 1, characterized in that, The protruding structure includes a first protruding structure and a second protruding structure, wherein the first protruding structure is disposed at the first root of the rigid body; and the second protruding structure is disposed at the second root of the rigid body.

6. The injection-molded propeller for a drone according to claim 5, characterized in that, The shaft hole is located at the first root.

7. A drone injection-molded propeller according to claim 6, characterized in that, The first protrusion structure is evenly distributed around the side of the shaft hole at the first root.

8. A drone injection-molded propeller according to claim 5, characterized in that, The second protrusion structure is evenly distributed on the upper and lower sides of the second root of the rigid body.

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