A type of coated automotive interior bolt

Abstract

This utility model discloses a coated automotive interior bolt, comprising a bolt body, a screw integrally mounted on the bottom of the bolt body, and a nut threaded onto the external thread of the lower end of the screw. The top and inner outer ring of the bolt body are respectively provided with a locking groove and a buffer groove. The surface of the bolt body is coated from the inside out with a zinc-nickel alloy plating, a nano-ceramic coating, and a modified epoxy resin coating. This utility model utilizes a three-layer composite coating structure of zinc-nickel alloy plating, nano-ceramic coating, and modified epoxy resin coating on the bolt body, and adds an anti-corrosion coating and a waterproof coating to the nut, thus blocking contact between corrosive media and the metal substrate in multiple ways. This improves the bolt's resistance to salt spray corrosion and effectively extends its service life. The installation of a rubber ring in the buffer groove absorbs vibration, preventing abnormal noises from collisions in the interior parts, and also seals the installation gap, preventing dust and moisture intrusion and maintaining the cleanliness of the interior.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically to a coated automotive interior bolt. Background Technology

[0002] Automotive interior bolts are critical connectors used to secure automotive interior components such as dashboards, door panels, and seat frames. Their performance directly affects the stability and lifespan of the interior assembly. Existing automotive interior bolts have poor corrosion resistance during use. Although the automotive interior environment is relatively enclosed, it is still affected by factors such as humid air, sweat, and cleaning agent residue. Ordinary bolts are prone to rusting, which not only affects the appearance but may also lead to thread failure and increase the risk of loosening of interior components. Utility Model Content

[0003] The purpose of this invention is to provide a coated automotive interior bolt that has the advantage of corrosion resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coated automotive interior bolt, comprising a bolt body, a screw integrally mounted on the bottom of the bolt body, a nut sleeved on the external thread of the lower end of the screw, a locking groove and a buffer groove respectively opened on the top and the inner ring of the bolt body, and the surface of the bolt body is coated with a zinc-nickel alloy plating, a nano-ceramic coating and a modified epoxy resin coating from the inside to the outside.

[0005] As a preferred embodiment, the nut is coated with an anti-corrosion coating, and the anti-corrosion coating is further coated with a waterproof coating.

[0006] As a preferred embodiment, connecting blocks are symmetrically installed inside the buffer groove, and rubber rings are fixedly installed on the outside of the connecting blocks.

[0007] As a preferred embodiment, the outer ring structure of the rubber ring extends to the outside of the buffer groove and is circularly wrapped around the outside of the bolt body.

[0008] As a preferred embodiment, the locking groove has a rectangular cross-section and the inner wall of the locking groove is provided with anti-slip texture.

[0009] As a preferred embodiment, the thickness of the zinc-nickel alloy coating is 5 μm, the thickness of the nano-ceramic coating is 3 μm, and the thickness of the modified epoxy resin coating is 2 μm.

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

[0011] 1. This utility model adopts a three-layer composite coating structure for the bolt body, consisting of a zinc-nickel alloy plating, a nano-ceramic coating, and a modified epoxy resin coating. The nut is further equipped with an anti-corrosion coating and a waterproof coating, which effectively blocks the contact between corrosive media and the metal substrate, thereby improving the bolt's resistance to salt spray corrosion and extending its service life. By installing a rubber ring in the buffer groove, vibration can be absorbed, preventing abnormal noises caused by collisions in the interior parts. It can also seal the installation gap, preventing dust and moisture from entering and maintaining the cleanliness of the interior.

[0012] 2. This utility model effectively isolates oxygen, carbon dioxide, and corrosive substances such as sweat residue and cleaning agent components that may exist in the car interior environment by coating the outside of the nut with an anti-corrosion coating, thus preventing the nut from rusting. Furthermore, a waterproof coating is applied on the outside of the anti-corrosion coating to form an additional waterproof barrier, preventing water from penetrating into the inside of the anti-corrosion coating and the threaded joint between the nut and the screw. This not only prevents water from damaging the anti-corrosion coating and ensures its long-lasting and stable anti-corrosion effect, but also prevents the threads from rusting and seizing due to water ingress, ensuring smooth disassembly and maintenance of the bolts in the future. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention after the rubber ring is removed;

[0015] Figure 3 This is a schematic diagram of the external coating structure of the bolt body of this utility model;

[0016] Figure 4 This is a schematic diagram of the external coating structure of the nut of this utility model.

[0017] In the diagram: 1. Bolt body; 2. Screw; 3. Nut; 4. Locking groove; 5. Buffer groove; 6. Connecting block; 7. Rubber ring; 8. Zinc-nickel alloy plating; 9. Nano-ceramic coating; 10. Modified epoxy resin coating; 11. Anti-corrosion coating; 12. Waterproof coating. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] Example 1:

[0021] Please see Figure 1 As shown, this utility model provides a coated automotive interior bolt, including a bolt body 1, a screw 2 integrally mounted on the bottom of the bolt body 1, a nut 3 sleeved on the external thread of the lower end of the screw 2, a locking groove 4 and a buffer groove 5 respectively opened on the top and the inner ring of the bolt body 1, and the surface of the bolt body 1 is coated with a zinc-nickel alloy plating layer 8, a nano-ceramic coating 9 and a modified epoxy resin coating 10 from the inside to the outside.

[0022] This technical solution employs a three-layer composite coating structure for the bolt body 1, consisting of a zinc-nickel alloy plating layer 8, a nano-ceramic coating 9, and a modified epoxy resin coating 10. The nut 3 is further equipped with an anti-corrosion coating 11 and a waterproof coating 12, which effectively blocks the contact between corrosive media and the metal substrate, thereby improving the bolt's resistance to salt spray corrosion and extending its service life. By installing a rubber ring 7 in the buffer groove 5, vibration can be absorbed, preventing abnormal noises caused by collisions in the interior parts. It also seals the installation gap, preventing dust and moisture from entering and maintaining the cleanliness of the interior.

[0023] Example 2:

[0024] Based on Embodiment 1, this utility model is as follows: Figure 4 As shown, the nut 3 is coated with an anti-corrosion coating 11 on the outside, and the anti-corrosion coating 11 is coated with a waterproof coating 12 on the outside.

[0025] Adopting such Figure 1 The technical solution shown describes a method where the outer surface of the nut 3 is coated with an anti-corrosion coating 11, which effectively isolates oxygen and carbon dioxide in the air, as well as corrosive substances such as sweat residue and cleaning agent components that may exist in the automotive interior environment, thus preventing the nut 3 from rusting. Furthermore, a waterproof coating 12 is applied to the outside of the anti-corrosion coating 11, which forms an additional waterproof barrier, preventing moisture from penetrating into the interior of the anti-corrosion coating 11 and the threaded connection between the nut 3 and the screw 2. This not only prevents moisture from damaging the anti-corrosion coating 11 and ensuring its long-lasting and stable anti-corrosion effect, but also prevents the threads from rusting and jamming due to water ingress, ensuring smoothness during subsequent bolt disassembly and maintenance.

[0026] Secondly, in the technical solution, connecting blocks 6 are symmetrically installed inside the buffer groove 5, and rubber rings 7 are fixedly installed on the outside of the connecting blocks 6; the outer ring structure of the rubber ring 7 extends to the outside of the buffer groove 5 and is circularly wrapped around the outside of the bolt body 1.

[0027] Its adoption is as follows Figure 1 The technical solution shown allows the connecting block 6 to provide stable installation support for the rubber ring 7, ensuring that the rubber ring 7 maintains a regular annular structure during bolt assembly and use, preventing the rubber ring 7 from shifting or falling off due to uneven force. The rubber ring 7 effectively absorbs vibrations caused by road bumps during vehicle operation, reducing hard collisions between bolts and interior components, thereby reducing the probability of abnormal noises from interior components, improving driving comfort, and preventing external dust, small debris, and small amounts of liquid from entering the installation gap, preventing dust accumulation and moisture inside the interior components, and ensuring the cleanliness and service life of the interior components.

[0028] Example 3:

[0029] This utility model is as follows Figures 1-4 As shown, the locking groove 4 has a cross-section with a regular elongated strip structure, and the inner wall of the locking groove 4 is provided with anti-slip texture; the zinc-nickel alloy plating layer 8 has a thickness of 5μm, the nano-ceramic coating 9 has a thickness of 3μm, and the modified epoxy resin coating 10 has a thickness of 2μm.

[0030] By adopting the above technical solution, the inner wall of the locking groove 4 is provided with anti-slip texture, eliminating the need for additional special tools, thus lowering the operational threshold for installation and subsequent maintenance. The anti-slip texture on the inner wall can significantly increase the contact friction between the tool and the inner wall of the locking groove 4, effectively preventing the tool from slipping during the tightening process. This not only improves operational efficiency but also prevents wear on the locking groove 4 due to slippage, ensuring the reusability of the bolt.

[0031] The working principle of this utility model is as follows: the bolt body 1 adopts a three-layer composite coating structure of zinc-nickel alloy plating 8, nano-ceramic coating 9 and modified epoxy resin coating 10, and the nut 3 is equipped with anti-corrosion coating 11 and waterproof coating 12. This effectively blocks the contact between corrosive media and metal substrate, improves the bolt's salt spray corrosion resistance, and extends its service life. By installing a rubber ring 7 in the buffer groove 5, vibration can be absorbed to prevent interior parts from making abnormal noises due to collisions, and the installation gap can be sealed to prevent dust and moisture from entering and maintain the cleanliness of the interior.

[0032] 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 coated automotive interior bolt comprising a bolt body (1), characterized in that: The bottom of the bolt body (1) is integrally mounted with a screw (2), and the lower end of the screw (2) is threaded with a nut (3). The top of the bolt body (1) and the inner side of the outer ring are respectively provided with a locking groove (4) and a buffer groove (5). The surface of the bolt body (1) is coated with a zinc-nickel alloy plating layer (8), a nano-ceramic coating (9) and a modified epoxy resin coating (10) from the inside to the outside.

2. The coated automotive interior bolt according to claim 1, characterized in that: The nut (3) is coated with an anti-corrosion coating (11) on the outside, and the anti-corrosion coating (11) is coated with a waterproof coating (12) on the outside.

3. The coated automotive interior bolt of claim 1, wherein: The buffer groove (5) is symmetrically equipped with connecting blocks (6), and the connecting blocks (6) are fixedly equipped with rubber rings (7).

4. A coated automotive interior bolt according to claim 3, characterized in that: The outer ring structure of the rubber ring (7) extends to the outside of the buffer groove (5) and is circularly wrapped around the outside of the bolt body (1).

5. The coated automotive interior bolt of claim 1, wherein: The locking groove (4) has a rectangular cross-section and the inner wall of the locking groove (4) is provided with anti-slip texture.

6. The coated automotive interior bolt of claim 1, wherein: The zinc-nickel alloy coating (8) has a thickness of 5 μm, the nano-ceramic coating (9) has a thickness of 3 μm, and the modified epoxy resin coating (10) has a thickness of 2 μm.

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