Rustproof screw structure
By installing anti-rust kits on the heads of hexagonal bolts, and utilizing structures such as protective covers, limiting skirts, and magnetic plates, the problem of rust on the heads of hexagonal bolts is solved, achieving both rust prevention and easy disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU SHENGHU AUTOMOTIVE FASTENER TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-10
AI Technical Summary
The head of a hex bolt is prone to corrosion and rust after prolonged exposure, which can lead to difficulty in disassembly or even stripping of the threads.
A rust-proof kit has been designed, including a protective cover, a limiting skirt, and reinforcements. The protective cover is fitted onto the bolt head, the limiting skirt wraps around the surface of the bolt head, and anti-slip protrusions increase friction. Combined with magnetic sheets and a wear-resistant coating, it prevents the protective cover from falling off and rusting.
It effectively reduces the probability of corrosion and rust on hexagonal bolt heads, facilitates subsequent disassembly, and allows for reuse, thus reducing production costs.
Smart Images
Figure CN224479153U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw technology, and in particular to a rust-proof screw structure. Background Technology
[0002] Hex bolts are a common type of mechanical fastener, named for their hexagonal heads. They are widely used in many fields due to their stable structure and ease of installation and disassembly.
[0003] In related technologies, after hex bolts are assembled onto components, the bolt heads are exposed to the air, which will corrode and rust over time, making it difficult to turn them during disassembly, or even causing the bolt threads to strip. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a rust-proof screw structure that can protect the bolt head of the hexagonal bolt, reduce the probability of corrosion and rust, and thus facilitate subsequent disassembly.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] The first aspect of this application provides a rust-proof screw structure, comprising: a screw rod; a bolt head disposed on the screw rod; and a rust-proof kit, the rust-proof kit including a protective cover, a limiting skirt, and a reinforcing member, wherein the protective cover has a receiving cavity, the bolt head is embedded in the receiving cavity, the limiting skirt is disposed at the opening of the receiving cavity, the limiting skirt is fitted against the periphery of the bolt head near the screw rod, and the reinforcing member includes a plurality of anti-slip protrusions, each of the anti-slip protrusions being spaced apart on the cavity wall of the receiving cavity.
[0007] The cross-sectional structure of the receiving cavity is hexagonal.
[0008] The bolt head has a hexagonal cross-sectional structure.
[0009] The screw has an adhesive application area.
[0010] It also includes a nut, which is disposed on the screw.
[0011] The nut is provided with a wear-resistant coating.
[0012] The rust-proof kit also includes a base block disposed on the surface of the limiting skirt near the screw.
[0013] The protective cover is also provided with several clamping areas, and the anti-rust kit also includes several first magnet pieces, which are adhered to the clamping areas.
[0014] The number of the first magnet pieces is the same as the number of the clamping areas.
[0015] The limiting skirt is provided with a drainage hole, the diameter of which is 1mm to 2mm.
[0016] Compared with the prior art, the present invention has at least the following advantages:
[0017] The protective cover of this application can be directly fitted onto the bolt head. The limiting skirt will wrap around the surface of the bolt head near the threaded rod, thus ensuring a tight fit between the protective cover and the bolt head. The anti-slip protrusions, combined with the limiting skirt, increase the friction between the cover and the bolt head surface in applications with high-intensity vibration, preventing the protective cover from falling off. In this way, the bolt head of the hexagonal bolt can be protected, reducing the probability of corrosion and rust, thereby facilitating subsequent disassembly. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.
[0019] Figure 1 This is a schematic diagram of the rust-proof screw structure in one embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the anti-rust component in one embodiment of the present invention. Detailed Implementation
[0021] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.
[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0024] Currently, after hex bolts are installed on parts, the bolt heads are exposed to the air, which will corrode and rust over time, making it difficult to turn them during disassembly, and even causing stripping of the threads.
[0025] To address the aforementioned issues, this application provides a rust-proof screw structure that protects the head of a hexagonal bolt, reducing the probability of corrosion and rust, thereby facilitating subsequent disassembly.
[0026] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.
[0027] See Figure 1 and Figure 2 A rust-proof screw structure includes: a screw 100, a bolt head 200, and a rust-proof kit 300. The bolt head 200 is disposed on the screw 100. The rust-proof kit 300 includes a protective cover 310, a limiting skirt 320, and a reinforcing member 330. The protective cover 310 has a receiving cavity 311, and the bolt head 200 is embedded in the receiving cavity 311. The limiting skirt 320 is disposed at the opening of the receiving cavity 311 and fits against the periphery of the bolt head 200 near the screw 100. The reinforcing member 330 includes a plurality of anti-slip protrusions 331, each of which is spaced apart on the cavity wall of the receiving cavity 311.
[0028] It should be noted that the bolt head 200 is a hexagonal bolt head. The protective cover 310 can be directly fitted onto the bolt head 200, allowing the bolt head 200 to be fully embedded in the receiving cavity 311. Then, the limiting skirt 320 will wrap around the surface of the bolt head 200 near the screw 100, thus ensuring that the protective cover 310 fits tightly against the bolt head 200. The anti-slip protrusion 331, in conjunction with the limiting skirt 320, increases the friction between the screw and the surface of the bolt head 200 in applications with high-intensity vibration, preventing the protective cover 310 from falling off the bolt head 200. Through this method, the bolt head 200 of the hexagonal bolt can be protected, reducing the probability of corrosion and rust, thereby facilitating subsequent disassembly.
[0029] It should also be noted that the rust-preventive kit 300 can be made of elastic materials, such as silicone rubber or EPDM rubber. Furthermore, the rust-preventive kit 300 of this application is reusable, with a high reusability rate. Moreover, this application achieves effective rust prevention without altering the original structure of the bolt head 200, thereby reducing production steps and lowering production costs.
[0030] See Figure 1 In one embodiment, the cross-sectional structure of the receiving cavity 311 is hexagonal.
[0031] See Figure 1 In one embodiment, the cross-sectional structure of the bolt head 200 is hexagonal.
[0032] It should be noted that the cross-sectional structure of both the receiving cavity 311 and the bolt head 200 is hexagonal. This ensures a tight fit between the protective cover 310 and the bolt head 200, reducing gaps between them. Furthermore, the limiting skirt 320 of the contoured protective cover 210 is evenly compressed along the bolt head 200's contour, forming a continuous sealing ring and improving rust prevention. Additionally, under vibration conditions, the contoured protective cover 310, due to its high shape fit and even friction distribution with the bolt head 200, reduces the risk of loosening or displacement caused by vibration. Moreover, the shape of the contoured protective cover 310 forms a "mortise and tenon structure" with the bolt head 200, allowing for quick positioning via visual alignment during installation, reducing the time required for angle adjustments.
[0033] See Figure 1 In one embodiment, the screw 100 has an adhesive application area 110.
[0034] See Figure 1 In one embodiment, a rust-proof screw structure further includes a nut 400, which is disposed on the screw 100.
[0035] It should be noted that a glue-applying area 110 is provided between the thread grooves on the screw 100. The glue-applying area 110 is used to apply glue, so that the connection with the nut 400 is more secure.
[0036] See Figure 1 In one embodiment, the nut 400 is provided with a wear-resistant coating.
[0037] It should be noted that the wear-resistant coating can be made of a frosted material to increase friction with the parts to be connected, preventing loosening in high-intensity vibration environments.
[0038] See Figure 2In one embodiment, the rust-proof kit 300 further includes a base block 340 disposed on the surface of the limiting skirt 320 near the screw 100.
[0039] It should be noted that the bottom block 340 is set on the outer surface of the limiting skirt 320 to facilitate manual removal of the protective cover 310.
[0040] See Figure 2 In one embodiment, the protective cover 310 is further provided with a plurality of clamping areas 312, and the rust-proof kit 300 also includes a plurality of first magnetic pieces 350, which are adhered to the clamping areas 312. Specifically, the number of first magnetic pieces 350 is the same as the number of clamping areas 312.
[0041] It should be noted that when it is necessary to remove the bolt from the connected parts, because the clamping area 312 has a first magnetic piece 350 attached to it, the wrench can be magnetically attracted to the first magnetic piece 350, making it easy to remove manually. In addition, by setting the first magnetic piece 350, it can also be attracted to the bolt head 200, so that the protective cover 310 fits more tightly with the bolt head 200.
[0042] See Figure 2 In another embodiment, the rust-proof kit 300 further includes a second magnet 360 disposed on the top wall of the receiving cavity 311.
[0043] It should be noted that after the protective cover 310 is fitted onto the bolt head 200, the second magnetic piece 360 can magnetically attract the top of the bolt head 200, thereby making the protective cover 310 fit more tightly onto the bolt head 200 and improving the rust prevention effect.
[0044] See Figure 2 In one embodiment, a drainage hole 321 is provided on the limiting skirt 320, and the diameter of the drainage hole 321 is in the range of 1mm to 2mm.
[0045] It should be noted that when there is a temperature difference in the application environment of the screw structure, water droplets will inevitably appear in the receiving cavity 311. By opening a drainage hole 321 with a diameter of 1-2mm at the bottom of the limiting skirt 320, water accumulation inside can be avoided.
[0046] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.
[0047] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A rust-proof screw structure, characterized in that, include: Screw; A bolt head, wherein the bolt head is disposed on the threaded rod; A rust-proof kit includes a protective cover, a limiting skirt, and a reinforcing member. The protective cover has a receiving cavity, and the bolt head is embedded in the receiving cavity. The limiting skirt is located at the opening of the receiving cavity and fits against the periphery of the bolt head near the screw. The reinforcing member includes several anti-slip protrusions, each of which is spaced apart on the cavity wall of the receiving cavity.
2. The rust-proof screw structure according to claim 1, characterized in that, The cross-sectional structure of the receiving cavity is hexagonal.
3. The rust-proof screw structure according to claim 2, characterized in that, The bolt head has a hexagonal cross-sectional structure.
4. The rust-proof screw structure according to claim 1, characterized in that, The screw has an adhesive application area.
5. The rust-proof screw structure according to claim 1, characterized in that, It also includes a nut, which is disposed on the screw.
6. The rust-proof screw structure according to claim 5, characterized in that, The nut is provided with a wear-resistant coating.
7. The rust-proof screw structure according to claim 1, characterized in that, The rust-proof kit also includes a base block disposed on the surface of the limiting skirt near the screw.
8. The rust-proof screw structure according to claim 1, characterized in that, The protective cover is also provided with several clamping areas, and the anti-rust kit also includes several first magnet pieces, which are adhered to the clamping areas.
9. The rust-proof screw structure according to claim 8, characterized in that, The number of the first magnet pieces is the same as the number of the clamping areas.
10. The rust-proof screw structure according to claim 1, characterized in that, The limiting skirt is provided with a drainage hole, the diameter of which is 1mm to 2mm.