Plastic-coated bolt for door lock installation

Abstract

The utility model discloses a plastic-coated bolt for installing a door lock, which belongs to the technical field of plastic-coated bolts and comprises a bolt main body, a plastic-coated part is coated on the outer side of the top of the bolt main body, the plastic-coated part comprises a side coating part and a top plugging part, the side coating part is sleeved outside a nut of the bolt main body, the top plugging part is covered on the nut, and an anti-scraping contact ring is arranged at the lower end of the side coating part. According to the technical scheme, the plastic-coated part is used for protecting the nut exposed during installation, the plastic-coated part is composed of a side wrapping part, a top plugging part and an anti-scraping contact ring, the side wrapping part and the top plugging part protect the side face and the top face of the nut respectively, the anti-scraping contact ring is arranged between the nut and the structure, and the anti-scraping contact ring is arranged between the nut and the structure. The screw cap can be prevented from being in direct contact with a structure during rotation, abrasion caused by friction between the screw cap and the structure is avoided, the anti-scraping contact ring is made of plastic and can deform to provide elastic force when pressed, and the overall anti-loosening capacity of the bolt body is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of plastic-coated bolt technology, specifically a plastic-coated bolt used for door lock installation. Background Technology

[0002] PVC-coated bolts are a special type of fastener consisting of a head and a threaded shank (a cylinder with external threads). They require a nut and are used to fasten two parts with through holes. Their structure typically includes a plastic coating, a threaded shank, and a head. The bolt surface is covered with a layer of plastic, which provides additional protection such as corrosion resistance, wear resistance, and insulation. Door locks operating in some corrosive environments often use PVC-coated bolts for installation. This ensures a long-lasting and secure connection between the lock and the door, allowing the door to function effectively for extended periods and preventing connection failure due to bolt corrosion.

[0003] The utility model disclosed in announcement number CN205244082U is a plastic-coated head fastening bolt. The advantages of this utility model are that the top is provided with an inverted conical head made of wear-resistant material, which, together with the square platform structure, increases the overall force-bearing area of ​​the bolt, effectively disperses the impact force of materials, protects it from a large amount of impact, and extends its service life. In addition, the enlarged wear-resistant structure at the top can effectively prevent the bolt from rotating during installation, which strengthens the installation strength while reducing the installation difficulty for workers.

[0004] However, when the above-mentioned bolts are used, since the inverted conical head is fixedly wrapped around the nut, the two do not have the characteristic of being separable and detachable. Therefore, when the inverted conical head wears or ages and fails, and the bolt threads wear, the damaged part cannot be replaced separately by disassembly and replacement. The entire bolt needs to be replaced, which will cause a certain degree of waste of resources. Therefore, in order to address the above problems, a plastic-coated bolt for door lock installation is proposed. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide a plastic-coated bolt for door lock installation. This plastic-coated bolt protects the exposed nut during installation with its plastic coating. The plastic coating consists of three parts: a side wrapping component, a top sealing component, and an anti-scratch contact ring. The side wrapping component and the top sealing component protect the side and top surfaces of the nut, respectively. The anti-scratch contact ring is positioned between the nut and the structure, preventing the nut from directly contacting the structure during rotation and avoiding wear due to friction. Furthermore, the anti-scratch contact ring is made of plastic, which deforms under pressure to provide elasticity, enhancing the overall anti-loosening ability of the bolt. This solves the technical problem in the prior art where the plastic-coated structure and the bolt typically lack detachable features, requiring the entire bolt to be replaced when part is damaged, resulting in resource waste.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A plastic-coated bolt for door lock installation includes a bolt body with a plastic-coated component wrapped around its top outer side. The plastic-coated component includes a side wrapping component fitted over the nut of the bolt body and a top sealing component covering the nut. The lower end of the side wrapping component is equipped with an anti-scratch contact ring. The anti-scratch contact ring includes a mounting base ring with several mounting shafts fixedly mounted on its upper end face. An annular groove is formed on the mounting base ring, and a movable ring is provided on the lower side of the mounting base ring. A retaining ring that engages with the annular groove is fixedly connected to the movable ring.

[0008] The above-described structure protects the exposed nuts during installation using a plastic-coated component. This component consists of three parts: a side wrapper, a top seal, and a scratch-resistant contact ring. The side wrapper and top seal protect the sides and top of the nut, respectively, while the scratch-resistant contact ring is positioned between the nut and the structure. This prevents the nut from directly contacting the structure during rotation, thus avoiding wear due to friction. Furthermore, the plastic material of the scratch-resistant contact ring allows it to deform under pressure, providing elasticity and enhancing the overall resistance to loosening of the bolt.

[0009] In one possible implementation, the side wrapping component includes a first wrapping half-ring and a second wrapping half-ring, with a plurality of plug-in shafts fixedly disposed on the first wrapping half-ring and a plurality of plug-in slots opened on the second wrapping half-ring.

[0010] With the above-described structure, the splicing between the first and second wrapping half-rings can be achieved by inserting the plug shaft into the plug groove, which facilitates the connection and separation between the side wrapping component and the bolt body.

[0011] In one possible implementation, the bolt body nut portion has symmetrically arranged snap-fit ​​edges on its side, and the bolt body nut portion has an internal hexagonal hole.

[0012] The above-described structure provides the necessary structural basis for the snap-fit ​​opening between the bolt body and the side cover, while the internal hexagonal hole provides the necessary structural basis for the user to tighten the bolt body.

[0013] In one possible implementation, both the first and second wrapping semi-rings are provided with receiving grooves that can fit tightly with the nut, and a mating protrusion that can fit tightly with the snap-fit ​​opening is fixedly provided in the receiving groove.

[0014] With the above structural form, after the first and second wrapping semi-rings are spliced ​​together, the snap-fit ​​opening fits the outward protrusion, and the receiving groove fits the bolt body nut, thus realizing the fixed connection between the side wrapping part and the bolt body.

[0015] In one possible implementation, the top sealing component includes a top cover, a sealing plate is fixedly disposed on the lower end face of the top cover, and a hexagonal insert is fixedly connected to the upper end face of the sealing plate, wherein the size of the hexagonal insert matches the size of the internal hexagonal hole.

[0016] With the above-described structure, after the bolt body is tightened, the hexagonal insert is inserted into the internal hexagonal hole, so that the sealing plate and the top cover are placed on the bolt body nut, thus protecting the nut.

[0017] In one possible implementation, the upper surface of the top cover is provided with a mating groove, and a tie rod fixedly connected to the top cover is disposed in the center of the mating groove.

[0018] With the above-described structure, when it is necessary to remove the top sealing component, the entire top sealing component can be pulled out by simply pulling the lever with a tool, making it easy for workers to remove the top sealing component.

[0019] In one possible implementation, the lower end faces of the first and second wrapping semi-rings are each provided with a plurality of mounting holes, and the size of the mounting holes matches the size of the mounting shaft.

[0020] The aforementioned structural form provides the necessary structural basis for the detachable connection between the scratch-resistant contact ring and the side wrapping.

[0021] In one possible implementation, a plurality of friction rings are fixedly disposed on the plug shaft, and the friction rings are made of elastic rubber.

[0022] The above-described structure enhances the robustness of the connection between the plug shaft and the plug groove by incorporating a friction ring.

[0023] In summary, this utility model has the following beneficial technical effects:

[0024] The plastic-coated component protects the exposed nuts during installation. It consists of three parts: a side cover, a top seal, and a scratch-resistant contact ring. The side cover and top seal protect the sides and top of the nut, respectively, while the scratch-resistant contact ring is positioned between the nut and the structure. This prevents the nut from directly contacting the structure during rotation, thus avoiding wear due to friction. The plastic material of the scratch-resistant contact ring allows it to deform under pressure, providing elasticity and enhancing the overall resistance to loosening of the bolt. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structural configuration of this utility model;

[0028] Figure 3 This is a schematic diagram of the anti-scratch contact ring structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the side wrapping structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the top sealing component of this utility model.

[0031] In the diagram: 1. Bolt body; 11. Snap-fit ​​opening; 12. Hexagonal socket; 2. Side wrapping; 21. First wrapping half-ring; 211. Insert shaft; 212. Friction ring; 22. Second wrapping half-ring; 221. Insert groove; 23. Receiving groove; 24. Outer protrusion; 25. Mounting hole; 3. Anti-scratch contact ring; 31. Mounting base ring; 32. Mounting shaft; 33. Annular groove; 34. Movable ring; 35. Snap ring; 4. Top sealing component; 41. Top cover; 42. Sealing plate; 43. Hexagonal insert shaft; 44. Mating groove; 45. Tie rod. Detailed Implementation

[0032] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0033] like Figure 1 - Figure 2 As shown in the figure, this embodiment provides a plastic-coated bolt for door lock installation, including a bolt body 1, the top of which is covered with a plastic coating. The plastic coating includes a side wrapping 2 sleeved on the nut of the bolt body 1, and a top sealing member 4 covering the nut. The lower end of the side wrapping 2 is equipped with an anti-scratch contact ring 3. Through the above structure, the plastic coating protects the nut exposed during installation. The plastic coating consists of three parts: the side wrapping 2, the top sealing member 4, and the anti-scratch contact ring 3. The side wrapping 2 and the top sealing member 4 protect the side and top surfaces of the nut, respectively. The anti-scratch contact ring 3 is located between the nut and the structure, which can prevent the nut from directly contacting the structure during rotation and avoid wear due to friction. The anti-scratch contact ring 3 is made of plastic and can deform under pressure to provide elasticity, enhancing the overall anti-loosening ability of the bolt body 1.

[0034] like Figure 3As shown, the anti-scratch contact ring 3 includes a mounting base ring 31, with several mounting shafts 32 fixedly provided on its upper end face. An annular groove 33 is provided on the mounting base ring 31, and a movable ring 34 is provided on the lower side of the mounting base ring 31. A retaining ring 35 that is fixedly connected to the movable ring 34 and inserted into the annular groove 33 is fixedly connected to it. The above structure allows the mounting base ring 31 and the movable ring 34 to rotate relative to each other. When the installation is almost completed, the mounting base ring 31 rotates with the nut, while the movable ring 34 is in contact with the structural surface and does not rotate or rotates with lag due to friction. This can reduce the friction between the anti-scratch contact ring 3 and the structural surface to a certain extent and reduce the wear of both during installation.

[0035] like Figure 4 As shown, the side wrapping component 2 includes a first wrapping half-ring 21 and a second wrapping half-ring 22. The first wrapping half-ring 21 is fixedly provided with a plurality of plug-in shafts 211, and the second wrapping half-ring 22 is provided with a plurality of plug-in slots 221. With the above structure, the splicing between the first wrapping half-ring 21 and the second wrapping half-ring 22 can be realized by inserting the plug-in shafts 211 into the plug-in slots 221, which facilitates the connection and separation between the side wrapping component 2 as a whole and the bolt body 1.

[0036] like Figure 2 As shown, the bolt body 1 has symmetrically arranged snap-fit ​​openings 11 on the side of the nut portion, and the bolt body 1 has an internal hexagonal hole 12. Through the above structural form, the snap-fit ​​openings 11 provide the necessary structural basis for the snap-fit ​​between the bolt body 1 and the side wrapping 2, while the internal hexagonal hole 12 provides the necessary structural basis for the user to tighten the bolt body 1.

[0037] The first and second wrapping semi-rings 21 and 22 are both provided with receiving grooves 23 that can fit tightly with the nut. The receiving grooves 23 are fixedly provided with mating protrusions 24 that can fit tightly with the snap-fit ​​opening 11. With the above structure, after the first and second wrapping semi-rings 21 and 22 are spliced, the snap-fit ​​opening 11 fits with the mating protrusions 24, and the receiving grooves 23 fit with the nut of the bolt body 1, so as to realize the fixed connection between the side wrapping part 2 and the bolt body 1.

[0038] like Figure 5 As shown, the top sealing component 4 includes a top cover 41, a sealing piece 42 is fixedly disposed on the lower end face of the top cover 41, and a hexagonal insert shaft 43 is fixedly connected to the upper end face of the sealing piece 42. The size of the hexagonal insert shaft 43 matches the size of the internal hexagonal hole 12. With the above structure, after the bolt body 1 is tightened, the hexagonal insert shaft 43 is inserted into the internal hexagonal hole 12, so that the sealing piece 42 and the top cover 41 cover the nut of the bolt body 1, thus protecting the nut.

[0039] The top cover 41 has a mating groove 44 on its upper surface. A pull rod 45, which is fixedly connected to the top cover 41, is centrally located in the mating groove 44. With the above structure, when it is necessary to remove the top sealing part 4, the top sealing part 4 can be pulled out as a whole by simply pulling the pull rod 45 with a tool, which makes it easy for workers to remove the top sealing part 4.

[0040] like Figure 4 As shown, the lower end faces of the first wrapping half-ring 21 and the second wrapping half-ring 22 are provided with a number of mounting holes 25, and the size of the mounting holes 25 matches the size of the mounting shaft 32. Through the above structure, the mounting holes 25 provide the necessary structural basis for the detachable connection between the anti-scratch contact ring 3 and the side wrapping part 2.

[0041] In addition, a number of friction rings 212 are fixedly provided on the plug shaft 211. The friction rings 212 are made of elastic rubber. Through the above structure, the connection between the plug shaft 211 and the plug groove 221 can be strengthened by setting the friction rings 212.

[0042] The working principle and usage process of this utility model:

[0043] The plastic-coated part protects the exposed nuts during installation. The plastic-coated part consists of three parts: a side wrapping part 2, a top sealing part 4, and an anti-scratch contact ring 3. The side wrapping part 2 and the top sealing part 4 protect the side and top surfaces of the nut, respectively. The anti-scratch contact ring 3 is placed between the nut and the structure, which can prevent the nut from directly contacting the structure during rotation and avoid wear due to friction. The anti-scratch contact ring 3 is made of plastic and can deform under pressure to provide elasticity, thereby enhancing the overall anti-loosening ability of the bolt body 1.

[0044] Specifically, the side wrapping component 2 is composed of a first wrapping half-ring 21 and a second wrapping half-ring 22. Through the above structure, the first wrapping half-ring 21 and the second wrapping half-ring 22 can be spliced ​​by inserting the insertion shaft 211 into the insertion slot 221, which facilitates the connection and separation between the side wrapping component 2 as a whole and the bolt body 1.

[0045] Meanwhile, after the bolt body 1 is tightened, the hexagonal insert 43 is inserted into the internal hexagonal hole 12, so that the sealing piece 42 and the top cover 41 cover the nut of the bolt body 1, which protects the nut.

[0046] Furthermore, since the mounting base ring 31 and the movable ring 34 can rotate relative to each other, when the installation is almost complete, the mounting base ring 31 rotates with the nut, while the movable ring 34, which is in contact with the structural surface, does not rotate or rotates with lag due to friction. This can reduce the friction between the anti-scratch contact ring 3 and the structural surface to a certain extent, and reduce the wear of both during installation.

[0047] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A plastic-coated bolt for installing door locks, characterized in that, include: The bolt body (1) has a plastic-coated part wrapped around its top outer side; The plastic-coated part includes a side wrapping part (2) sleeved on the outside of the nut of the bolt body (1) and a top sealing part (4) covering the nut, and a scratch-resistant contact ring (3) is installed at the lower end of the side wrapping part (2); The anti-scratch contact ring (3) includes a mounting base ring (31), with several mounting shafts (32) fixedly provided on its upper end face. An annular groove (33) is provided on the mounting base ring (31), and a movable ring (34) is provided on the lower side of the mounting base ring (31). A retaining ring (35) that is inserted into the annular groove (33) is fixedly connected to the movable ring (34).

2. The plastic-coated bolt for door lock installation according to claim 1, characterized in that: The side wrapping component (2) includes a first wrapping half ring (21) and a second wrapping half ring (22). The first wrapping half ring (21) is fixedly provided with a plurality of plug-in shafts (211), and the second wrapping half ring (22) is provided with a plurality of plug-in slots (221).

3. A plastic-coated bolt for door lock installation according to claim 2, characterized in that: The bolt body (1) has symmetrically arranged snap-fit ​​openings (11) on the side of the nut portion, and the bolt body (1) has an internal hexagonal hole (12) in the nut portion.

4. A plastic-coated bolt for door lock installation according to claim 3, characterized in that: The first wrapping half ring (21) and the second wrapping half ring (22) are both provided with a receiving groove (23) that can fit tightly with the nut, and a mating protrusion (24) that can fit tightly with the snap-fit ​​opening edge (11) is fixedly provided in the receiving groove (23).

5. A plastic-coated bolt for door lock installation according to claim 3, characterized in that: The top sealing component (4) includes a top cover (41), a sealing piece (42) is fixedly provided on the lower end face of the top cover (41), and a hexagonal insert (43) is fixedly connected to the upper end face of the sealing piece (42), and the size of the hexagonal insert (43) matches the size of the internal hexagonal hole (12).

6. A plastic-coated bolt for door lock installation according to claim 5, characterized in that: The top cover (41) has a mating groove (44) on its upper surface, and a pull rod (45) fixedly connected to the top cover (41) is provided in the center of the mating groove (44).

7. A plastic-coated bolt for door lock installation according to claim 2, characterized in that: The lower end faces of the first wrapping half ring (21) and the second wrapping half ring (22) are provided with a plurality of mounting holes (25), and the size of the mounting holes (25) matches the size of the mounting shaft (32).

8. A plastic-coated bolt for door lock installation according to claim 2, characterized in that: A plurality of friction rings (212) are fixedly provided on the plug shaft (211), and the friction rings (212) are made of elastic rubber.

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