Rust-proof screw

Abstract

The utility model relates to the technical field of screws, and discloses a rust-proof screw which comprises a screw rod and a screw head fixedly connected with one end of the screw rod, and a through hexagonal groove is formed in the top of the screw head. According to the anti-rust screw, through the built-in slow release assembly, the anti-rust screw can continuously slowly release anti-rust components from the slow release pipe, it is ensured that the screw always keeps excellent anti-rust performance in the long-term use process, the anti-rust screw is suitable for severe environments such as high-humidity and high-salt-mist occasions with high corrosivity, the service life of the screw is effectively prolonged, and the anti-rust screw is suitable for popularization and application. A multi-layer coating structure is adopted on the surface of the screw rod and comprises a nano silicon dioxide layer, an epoxy resin layer and a polyurethane layer, the coatings respectively have unique performance and jointly provide comprehensive protection for the screw, the nano silicon dioxide layer enhances the adhesive force of the coatings, the epoxy resin layer provides stable chemical and mechanical properties, and the service life of the screw is prolonged. And the polyurethane layer endows the screw with good wear resistance and ultraviolet aging resistance.

Description

Technical Field

[0001] This application relates to the field of screw technology, specifically to a rust-proof screw. Background Technology

[0002] With the development of industrial technology, fasteners are being used more and more widely, especially in harsh environments, which places higher demands on their corrosion resistance.

[0003] Existing rust-proof screws mainly improve their corrosion resistance by means of surface galvanizing, nickel plating, coating with rust-preventive oil, or using stainless steel. Among these methods, surface galvanizing is one of the most common. It forms a zinc protective layer to prevent the substrate from being oxidized. However, long-term exposure to acidic or alkaline environments can cause the zinc layer to peel off, thus losing its protective function. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a rust-proof screw that has advantages such as good rust prevention performance, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a rust-proof screw, comprising a screw rod and a screw head fixedly connected to one end of the screw rod, wherein a through hexagonal groove is provided on the top of the screw head, and a mounting hole is provided on the inner top wall of the hexagonal groove, the mounting hole extending to the bottom end of the screw head, and the mounting hole and the screw rod are on the same axis;

[0006] The mounting hole is equipped with a slow-release component, which includes a slow-release tube. The outer surface of the slow-release tube has a set of exudation micropores. A glass ball is snapped into the top of the slow-release tube. The slow-release tube is fixedly connected to the inner bottom wall of the mounting hole.

[0007] The outer surface of the screw is provided with a set of liquid guiding grooves, each of which extends through to the mounting hole, and a liquid guiding plate core is installed inside each of the liquid guiding grooves.

[0008] Through the above-described scheme, the built-in slow-release component allows the rust-proof screw of this application to continuously release rust-proof components from the slow-release tube, ensuring that the screw maintains excellent rust-proof performance during long-term use. It is suitable for harsh environments, such as high humidity, high salt spray, and other highly corrosive conditions, effectively extending the screw's service life. The screw surface adopts a multi-layer coating structure, including a nano-silica layer, an epoxy resin layer, and a polyurethane layer. Each of these coatings has unique properties, working together to provide comprehensive protection for the screw. The nano-silica layer enhances the adhesion of the coating, the epoxy resin layer provides stable chemical and mechanical properties, and the polyurethane layer gives the screw good wear resistance and UV aging resistance, thereby significantly improving the overall durability and service life of the screw.

[0009] Furthermore, a sealing membrane is fitted onto the outer surface of the sustained-release tube.

[0010] The above method, through the setting of a sealing membrane, can seal a group of exudative micropores.

[0011] Furthermore, a set of pull tabs is fixedly connected to the top of the sealing membrane.

[0012] The above solution, through the setting of the pull tab, allows the sealing film to be pulled out when using screws.

[0013] Furthermore, the slow-release tube is filled with a rust-preventing slow-release agent.

[0014] Through the above method, this agent can continuously and slowly release rust-preventive components, thereby ensuring the long-lasting and effective corrosion protection of the screws.

[0015] Furthermore, the liquid-guiding core is made of a hygroscopic material.

[0016] The above method can guide the rust inhibitor released from the slow-release tube to the screw surface through capillary action, ensuring that the rust inhibitor can be evenly covered on the screw and improving the rust prevention effect.

[0017] Furthermore, the outer surface of the screw head is provided with an anti-slip feature.

[0018] The above solution allows users to easily rotate the screw head manually.

[0019] Furthermore, the screw comprises, from the inside out, a rod body, a nano-silica layer, an epoxy resin layer, and a polyurethane layer.

[0020] Through the above scheme, the nano-silica layer adheres tightly to the screw surface, enhancing the adhesion of the coating; the epoxy resin layer has excellent chemical stability and mechanical properties, providing a basic protective barrier; and the polyurethane layer has good wear resistance and UV aging resistance, extending the overall service life of the screw.

[0021] Furthermore, the screw is preferably made of low-carbon alloy steel.

[0022] The above-mentioned solution has high strength and toughness, and is easy to process and form, which can meet the needs of different application scenarios. In addition, low carbon alloy steel also has good corrosion resistance, and when used in conjunction with rust inhibitors, it can further improve the rust prevention performance of screws.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This rust-proof screw, through its built-in slow-release component, continuously releases rust-preventive components from the slow-release tube, ensuring that the screw maintains excellent rust-proof performance throughout long-term use. It is suitable for harsh environments, such as high humidity, high salt spray, and other highly corrosive conditions, effectively extending the screw's service life. The screw surface employs a multi-layer coating structure, including a nano-silica layer, an epoxy resin layer, and a polyurethane layer. Each of these coatings possesses unique properties, collectively providing comprehensive protection for the screw. The nano-silica layer enhances coating adhesion, the epoxy resin layer provides stable chemical and mechanical properties, and the polyurethane layer endows the screw with good wear resistance and UV aging resistance, thereby significantly improving the screw's overall durability and service life. Attached Figure Description

[0025] Figure 1 This is a front view of the overall structure of this application;

[0026] Figure 2 This is a diagram of the screw structure of this application;

[0027] Figure 3 This is a cross-sectional view of the overall structure of this application;

[0028] Figure 4 This is a structural diagram of the slow-release component of this application;

[0029] Figure 5 This is a diagram of the screw structure of this application.

[0030] In the picture:

[0031] 1. Screw; 101. Rod body; 102. Nano-silica layer; 103. Epoxy resin layer; 104. Polyurethane layer; 2. Screw head; 3. Hexagonal groove; 4. Mounting hole; 5. Slow-release component; 501. Slow-release tube; 502. Exudation micropores; 503. Glass ball; 6. Liquid guiding groove; 7. Liquid guiding core; 8. Sealing membrane; 801. Pulling plate. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 2 and Figure 3In this embodiment, a rust-proof screw includes a screw rod 1 and a screw head 2 fixedly connected to one end of the screw rod 1. The top of the screw head 2 has a through hexagonal groove 3, and the inner top wall of the hexagonal groove 3 has a mounting hole 4. The mounting hole 4 extends to the bottom end of the screw head 2. The mounting hole 4 is on the same axis as the screw rod 1. The outer surface of the screw head 2 is made of anti-slip material, which makes it easy for the user to manually rotate the screw head 2.

[0034] Please see Figure 1 , Figure 2 and Figure 5 The screw 1 is preferably made of low-carbon alloy steel, which has high strength and toughness, and is easy to process and form, meeting the needs of different application scenarios. In addition, low-carbon alloy steel also has good corrosion resistance. When used in conjunction with rust inhibitors, it can further improve the rust prevention performance of the screw. The screw 1 includes, from the inside to the outside, a rod body 101, a nano-silica layer 102, an epoxy resin layer 103, and a polyurethane layer 104. The nano-silica layer 102 is tightly attached to the surface of the screw 1, enhancing the adhesion of the coating. The epoxy resin layer 103 has excellent chemical stability and mechanical properties, providing a basic protective barrier. The polyurethane layer 104 has good wear resistance and UV aging resistance, extending the overall service life of the screw.

[0035] Please see Figure 1 , Figure 2 and Figure 3 The mounting hole 4 is equipped with a slow-release component 5, which includes a slow-release tube 501. The outer surface of the slow-release tube 501 is provided with a set of exudation micropores 502. A glass ball 503 is snapped into the top of the slow-release tube 501. The slow-release tube 501 is fixedly connected to the inner bottom wall of the mounting hole 4. By setting the glass ball 503, the top of the slow-release tube 501 can be sealed to prevent atmospheric pressure from discharging the rust inhibitor inside the slow-release tube 501.

[0036] Please see Figure 1 , Figure 2 and Figure 4The outer surface of the slow-release tube 501 is fitted with a sealing membrane 8, which seals a set of exudative micropores 502. A set of liquid guiding grooves 6 are formed on the outer surface of the screw 1, and each liquid guiding groove 6 extends through the mounting hole 4. A liquid guiding core 7 is installed inside each liquid guiding groove 6. A set of pull tabs 801 are fixedly connected to the top of the sealing membrane 8. The sealing membrane 8 can be pulled out when the screw is used. The slow-release tube 501 is filled with a rust-inhibiting slow-release agent, which can continuously release rust-inhibiting components to ensure the long-lasting and effective anti-corrosion effect of the screw. The liquid guiding core 7 is a hygroscopic material that can guide the rust-inhibiting agent released from the slow-release tube 501 to the surface of the screw 1 through capillary action, ensuring that the rust-inhibiting agent can be evenly covered on the screw and improving the rust-inhibiting effect.

[0037] In this embodiment, a rust-proof screw, through the built-in slow-release component 5, can continuously release rust-proof components from the slow-release tube 501, ensuring that the screw maintains excellent rust-proof performance during long-term use. It is suitable for harsh environments, such as high humidity, high salt spray, and other highly corrosive occasions, effectively extending the service life of the screw. The surface of the screw 1 adopts a multi-layer coating structure, including a nano-silica layer 102, an epoxy resin layer 103, and a polyurethane layer 104. Each of these coatings has unique properties, which together provide comprehensive protection for the screw. The nano-silica layer 102 enhances the adhesion of the coating, the epoxy resin layer 103 provides stable chemical and mechanical properties, and the polyurethane layer 104 gives the screw good wear resistance and UV aging resistance, thereby significantly improving the overall durability and service life of the screw.

[0038] The working principle of the above embodiment is as follows: After the screw is manufactured, the slow-release tube 501 is filled with a rust-inhibiting slow-release agent. The top of the slow-release tube 501 is sealed by a glass ball 503. At the same time, a sealing membrane 8 is sleeved on the outer surface of the slow-release tube 501 to perform secondary sealing of the exudation micropores 502. A pull tab 801 is connected to the top of the sealing membrane 8 to facilitate subsequent operation. Before using the screw, the user needs to pull out the sealing membrane 8 through the pull tab 801 to release the seal on the exudation micropores 502. This step allows the rust-inhibiting slow-release agent to begin slow-release during subsequent installation and use. When installing the screw 1, a wrench is inserted into the hexagonal groove 3 to squeeze the glass ball 503 and break it, allowing air to enter the top of the slow-release tube 501. Driven by air pressure, the rust-inhibiting agent in the slow-release tube 501 begins to slowly release through the exudation micropores 502, forming a rust-proof protective layer. At the same time, due to the setting of the liquid guiding groove 6 and the liquid guiding core 7, the rust inhibitor can be effectively guided to the surface of the screw 1, ensuring uniform coverage of the rust-proof layer. The surface of the screw 1 also adopts a multi-layer coating structure, including a nano silica layer 102, an epoxy resin layer 103, and a polyurethane layer 104. Each of these coatings has unique properties, which together provide comprehensive protection for the screw. The nano silica layer 102 enhances the adhesion of the coating, the epoxy resin layer 103 provides stable chemical and mechanical properties, and the polyurethane layer 104 gives the screw good wear resistance and UV aging resistance.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rust-proof screw, comprising a screw rod (1) and a screw head (2) fixedly connected to one end of the screw rod (1), characterized in that: The top of the screw head (2) is provided with a through hexagonal groove (3), and the inner top wall of the hexagonal groove (3) is provided with a mounting hole (4). The mounting hole (4) extends to the bottom end of the screw head (2), and the mounting hole (4) and the screw (1) are on the same axis. The mounting hole (4) is provided with a slow-release component (5), which includes a slow-release tube (501). A set of exudation micropores (502) are opened on the outer surface of the slow-release tube (501). A glass ball (503) is snapped into the top of the slow-release tube (501). The slow-release tube (501) is fixedly connected to the inner bottom wall of the mounting hole (4). A set of liquid guiding grooves (6) are provided on the outer surface of the screw (1), each of the liquid guiding grooves (6) extends through to the mounting hole (4), and a liquid guiding chip (7) is installed inside each of the liquid guiding grooves (6).

2. The rust-proof screw according to claim 1, characterized in that: The outer surface of the slow-release tube (501) is fitted with a sealing membrane (8).

3. The rust-proof screw according to claim 2, characterized in that: A set of pull tabs (801) are fixedly connected to the top of the sealing membrane (8).

4. The rust-proof screw according to claim 1, characterized in that: The slow-release tube (501) is filled with a rust-preventing slow-release agent.

5. A rust-proof screw according to claim 1, characterized in that: The liquid-conducting core (7) is made of hygroscopic material.

6. The rust-proof screw according to claim 1, characterized in that: The outer surface of the screw head (2) is provided with anti-slip features.

7. The rust-proof screw according to claim 1, characterized in that: The screw (1) comprises, from the inside out, a rod body (101), a nano-silica layer (102), an epoxy resin layer (103), and a polyurethane layer (104).

8. A rust-proof screw according to claim 1, characterized in that: The screw (1) is made of low-carbon alloy steel.

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