Aluminum alloy frame die casting of a lightweight unmanned aerial vehicle body

Abstract

This utility model discloses a lightweight die-cast aluminum alloy frame for a drone fuselage, comprising a die-cast body, a filter screen fixedly installed on the top of the die-cast body, mounting holes around the top of the die-cast body, and snap-fit ​​holes on the top of the die-cast body. The die-cast body includes an epoxy zinc-rich primer layer, an epoxy iron oxide red primer layer at the bottom of the epoxy zinc-rich primer layer, and a polyurethane resin layer at the bottom of the epoxy iron oxide red primer layer. This utility model, through the above technical solution, solves the problems of existing die-cast parts for drones lacking external dust filtration capabilities, which may lead to external dust affecting internal electronic components. Furthermore, existing die-cast parts have poor rust prevention; rust damages the surface protective layer of the die-cast part, leading to a decrease in its mechanical properties and corrosion resistance. For example, rust reduces the strength and hardness of the die-cast part, making it more susceptible to further damage.

Description

Technical Field

[0001] This utility model relates to the field of die casting technology for unmanned aerial vehicles (UAVs), specifically a lightweight aluminum alloy frame die casting for UAV fuselage. Background Technology

[0002] Drone die castings refer to die castings used in drone manufacturing. These die castings are metal parts made through a pressure casting process. Specifically, die castings are produced by pouring molten copper, zinc, aluminum, or aluminum alloys into the feed inlet of a pressure casting machine (die casting machine) equipped with a casting mold. The molten metal is then injected into the mold under high pressure, allowing it to cool and solidify. However, existing die castings for drones lack external dust filtration capabilities, which may allow external dust to affect internal electronic components. Furthermore, existing die castings have poor rust prevention; rust damages the surface protective layer, leading to a decrease in mechanical properties and corrosion resistance. For example, rust reduces the strength and hardness of the die casting, making it more susceptible to further damage. Utility Model Content

[0003] The purpose of this invention is to provide a lightweight die-cast aluminum alloy frame for drone fuselage, which has the advantages of dust filtration and rust prevention.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lightweight aluminum alloy frame die-casting part for a drone fuselage, comprising a die-casting body, a filter screen fixedly installed on the top of the die-casting body, mounting holes on all four sides of the top of the die-casting body, a snap-fit ​​hole on the top of the die-casting body, an epoxy zinc-rich primer layer, an epoxy iron oxide red primer layer coated on the bottom of the epoxy zinc-rich primer layer, and a polyurethane resin layer coated on the bottom of the epoxy iron oxide red primer layer.

[0005] As a preferred embodiment, the epoxy iron oxide primer layer includes a melamine coating layer, and the bottom of the melamine coating layer is coated with a polytetrafluoroethylene coating layer.

[0006] As a preferred embodiment, the bottom of the polytetrafluoroethylene coating layer is coated with a phenolic resin coating layer, the thickness of which is 0.03 mm.

[0007] As a preferred embodiment, the polyurethane resin layer includes a polypropylene coating layer, and the top of the polypropylene coating layer is coated with an alkyd coating layer.

[0008] As a preferred embodiment, the top of the alkyd coating layer is coated with an epoxy coal tar coating layer, the thickness of which is 0.02 mm.

[0009] As a preferred embodiment, the polypropylene coating layer and the alkyd coating layer are connected by a chlorosulfonated polyethylene coating layer, and the thickness of the polypropylene coating layer is 0.01 mm.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model solves the problem that existing die-cast parts for drones do not have the function of filtering external dust, which may cause external dust to affect internal electronic components. At the same time, existing die-cast parts have poor rust prevention. Rust will damage the surface protective layer of the die-cast parts, resulting in a decrease in their mechanical properties and corrosion resistance. For example, rust will reduce the strength and hardness of the die-cast parts, making them more susceptible to further damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the die-cast body structure of this utility model;

[0014] Figure 3 This is a cross-sectional view of the epoxy iron oxide primer layer structure of this utility model;

[0015] Figure 4 This is a cross-sectional view of the polyurethane resin layer structure of this utility model.

[0016] In the diagram: 1. Die-cast body; 2. Snap-fit ​​hole; 3. Filter screen; 4. Mounting hole; 101. Epoxy zinc-rich primer layer; 102. Epoxy iron oxide red primer layer; 103. Polyurethane resin layer; 1021. Melamine coating layer; 1022. Polytetrafluoroethylene coating layer; 1023. Phenolic resin coating layer; 1031. Polypropylene coating layer; 1032. Alkyd coating layer; 1033. Epoxy coal tar coating layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example 1:

[0019] Please see Figure 1 and Figure 2 As shown, this utility model provides a lightweight aluminum alloy frame die-casting part for a drone fuselage, including a die-casting body 1, a filter screen 3 fixedly installed on the top of the die-casting body 1, mounting holes 4 are opened around the top of the die-casting body 1, a snap-fit ​​hole 2 is opened on the top of the die-casting body 1, the die-casting body 1 includes an epoxy zinc-rich primer layer 101, an epoxy iron oxide red primer layer 102 is coated on the bottom of the epoxy zinc-rich primer layer 101, and a polyurethane resin layer 103 is coated on the bottom of the epoxy iron oxide red primer layer 102.

[0020] This technical solution addresses the problem that existing die-cast parts for drones lack external dust filtration capabilities, which may allow external dust to affect internal electronic components. Furthermore, existing die-cast parts have poor rust prevention; rust damages the surface protective layer, leading to decreased mechanical and corrosion resistance. For example, rust reduces the strength and hardness of the die-cast parts, making them more susceptible to further damage. Example 2:

[0021] Based on Embodiment 1, this utility model is as follows: Figure 3 and Figure 4 As shown, the epoxy iron oxide primer layer 102 includes a melamine coating layer 1021, a polytetrafluoroethylene coating layer 1022 coated at the bottom of the melamine coating layer 1021, a phenolic resin coating layer 1023 coated at the bottom of the polytetrafluoroethylene coating layer 1022, and the thickness of the phenolic resin coating layer 1023 is 0.03 mm. The polyurethane resin layer 103 includes a polypropylene coating layer 1031, an alkyd coating layer 1032 coated on top of the polypropylene coating layer 1031, and an epoxy coal tar coating layer 1033 coated on top of the alkyd coating layer 1032, with a thickness of 0.02 mm. The polypropylene coating layer 1031 and the alkyd coating layer 1032 are connected by a chlorosulfonated polyethylene coating layer, with a thickness of 0.01 mm.

[0022] The above technical solution, through the setting of melamine coating layer 1021, has the effects of waterproofing, moisture-proofing and corrosion resistance, and has the advantages of high hardness, wear resistance and heat resistance. Through the setting of polytetrafluoroethylene coating layer 1022, it has the advantages of high temperature resistance, low temperature resistance, corrosion resistance and waterproofing, as well as strong adhesion, friction resistance and high hardness. Through the setting of polypropylene coating layer 1031, it has the characteristics of hardness, wear resistance, water resistance, moisture resistance, chemical corrosion resistance, insulation and fast drying.

[0023] The working principle of this utility model is as follows: First, the filter screen 3 is fixedly installed on the top of the die-cast body 1, which can effectively block external dust and debris from entering the drone, preventing dust accumulation from affecting the normal operation of the internal electronic components and equipment of the drone, preventing problems such as poor heat dissipation and short circuits caused by dust, and ensuring a clean internal environment for the drone. The mounting holes 4 opened around the top of the die-cast body 1 facilitate connection and fixation with other drone components. Through bolts, nuts and other connectors, the drone's motors, propellers, sensors and other components can be firmly connected to the frame, ensuring that the relative positions of each component remain stable during the drone's flight, providing support for the overall structural stability of the drone. The design of the snap-fit ​​hole 2 facilitates quick snap-fit ​​assembly with specific components, improving the drone's assembly efficiency and enhancing the reliability of the connection to a certain extent, enabling the components of the drone to work together during flight. The outermost epoxy zinc-rich primer layer 10 1. Due to the electrochemical protective effect of zinc, when minor damage occurs on the aluminum alloy surface, the zinc layer will preferentially undergo an oxidation reaction, thereby protecting the aluminum alloy substrate from corrosion, improving the frame's corrosion resistance, and extending the service life of the drone in various complex environments. The intermediate epoxy iron oxide primer layer 102 further enhances the anti-corrosion effect. Its dense coating structure can effectively block external corrosive media, such as rainwater, humid air, and salt spray, from contacting the aluminum alloy substrate. At the same time, it bonds well with the upper and lower coatings, enhancing the overall adhesion and stability of the coating. The bottom polyurethane resin layer 103 has good wear resistance and flexibility. On the one hand, it can resist friction and wear caused by airflow, dust, etc. during flight, protecting the internal coating and aluminum alloy substrate. On the other hand, when the drone is subjected to minor collisions or vibrations, the flexibility of the polyurethane resin layer 103 can act as a buffer, reducing stress concentration damage to the frame and enhancing the frame's mechanical properties and durability.

[0024] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0025] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A lightweight aluminum alloy frame die-casting part for a drone fuselage, comprising a die-casting body (1), characterized in that: A filter screen (3) is fixedly installed on the top of the die-cast body (1). Mounting holes (4) are opened around the top of the die-cast body (1). A snap-fit ​​hole (2) is opened on the top of the die-cast body (1). The die-cast body (1) includes an epoxy zinc-rich primer layer (101). An epoxy iron oxide red primer layer (102) is coated on the bottom of the epoxy zinc-rich primer layer (101). A polyurethane resin layer (103) is coated on the bottom of the epoxy iron oxide red primer layer (102).

2. The lightweight aluminum alloy frame die-casting part for a drone fuselage according to claim 1, characterized in that: The epoxy iron oxide primer layer (102) includes a melamine coating layer (1021), and the bottom of the melamine coating layer (1021) is coated with a polytetrafluoroethylene coating layer (1022).

3. The lightweight UAV fuselage aluminum alloy frame die-casting part according to claim 2, characterized in that: The bottom of the polytetrafluoroethylene coating layer (1022) is coated with a phenolic resin coating layer (1023), the thickness of which is 0.03 mm.

4. The lightweight unmanned aerial vehicle (UAV) fuselage aluminum alloy frame die-casting part according to claim 1, characterized in that: The polyurethane resin layer (103) includes a polypropylene coating layer (1031), and the top of the polypropylene coating layer (1031) is coated with an alkyd coating layer (1032).

5. The lightweight unmanned aerial vehicle (UAV) fuselage aluminum alloy frame die-casting part according to claim 4, characterized in that: The top of the alkyd coating layer (1032) is coated with an epoxy coal tar coating layer (1033), the epoxy coal tar coating layer (1033) having a thickness of 0.02 mm.

6. The lightweight UAV fuselage aluminum alloy frame die-casting part according to claim 4, characterized in that: The polypropylene coating layer (1031) and the alkyd coating layer (1032) are connected by a chlorosulfonated polyethylene coating layer, and the thickness of the polypropylene coating layer (1031) is 0.01 mm.

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