Leakage-proof anti-aging sealing strip

By inverted "U" shaped sealing strip design, airbag support, anti-slip groove and fluorocarbon coating, the problem of material leakage after long-term use of sealing strip is solved, the sealing performance and anti-aging performance of sealing strip are enhanced, and the service life is extended.

CN223864805UActive Publication Date: 2026-02-03ZHEJIANG XIANJU COUNTY BODA SHAPED RUBBER & PLASTIC CO LTD
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Patent Information

Application Number
CN202520525825.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-02-03
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

Existing sealing strips lack auxiliary support structures after prolonged use, leading to frequent material leakage and affecting service life and stability.

Method used

A leak-proof and anti-aging sealing strip was designed, featuring an inverted "U" shaped structure, airbag auxiliary support, side anti-slip grooves, fluorocarbon coating, pressure bar and docking block structure to improve sealing performance and prevent detachment.

Benefits of technology

The airbag-assisted support and anti-slip groove structure enhance the fit and friction between the sealing strip and the installation position. The fluorocarbon coating improves corrosion resistance and extends service life. The mating block expands the application range and solves the problem of material leakage from the sealing strip.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a leakproof anti-aging sealing strip, which belongs to the technical field of automobile sealing strips, and comprises a sealing strip main body, the front side of the sealing strip main body is inverted U-shaped, the left side and the right side of the sealing strip main body are respectively provided with a side anti-slip groove, and the surface of the sealing strip main body is fixedly connected with a pressurizing strip; the sealing strip body is made of engineering materials, an air bag adheres to the inner wall of the sealing strip body, a butt joint block is movably arranged in the sealing strip body, and a fluorocarbon coating is sprayed to the surface of the sealing strip body. According to the leakproof and anti-aging sealing strip, when the sealing strip body is installed, the sealing strip body is inserted into a needed position, in the process, the air bag is squeezed, the air bag is squeezed to deform, the side position of the air bag expands, and finally the air bag abuts against the inner walls of the two sides of the sealing strip body, so that the auxiliary supporting effect is achieved; the left side and the right side of the sealing strip body can be tightly attached to the installation position, and the sealing effect is optimized.
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Description

Technical Field

[0001] This utility model relates to the field of automotive sealing strip technology, specifically a leak-proof and anti-aging sealing strip. Background Technology

[0002] Automotive sealing strips serve to waterproof, dustproof, and prevent foreign objects from entering, protecting automotive components. They also reduce noise and provide shock absorption. TPV, stainless steel strips, and PVC are readily available and flexible raw materials for automotive sealing strip production. However, after prolonged use, the surface of the sealing strip shows significant wear and corrosion. To overcome these shortcomings, prior art 1 (Chinese patent application No. 201720093530.4, filed on 2017-01-24) describes an automotive sealing strip that, through the design of a second cavity, allows for a sudden increase in sealing force as the rear cover continues to descend during closure, effectively preventing the rear cover from continuing to descend and thus preventing bumper damage. Furthermore, it prevents excessive closing force, making it more convenient for use. For more comfortable user operation, existing technology 2 (Chinese patent application No. 202122985689.6, application date 2021-12-01) describes a sealing strip with anti-aging function. Through the combined use of a wear-resistant layer, a heat insulation layer, a corrosion-resistant layer, an elastic component, and a reinforcing member, the sealing strip's anti-aging effect is improved, giving it the advantage of a long service life. In actual use, the wear-resistant layer, heat insulation layer, and corrosion-resistant layer improve the sealing strip's wear resistance, heat insulation, and corrosion resistance. Secondly, the reinforcing member improves the stability of the sealing strip, preventing twisting or internal structural displacement during use. Furthermore, the elastic component improves the elasticity of the sealing strip, making it easier for users to operate, thereby improving the sealing strip's anti-aging degree and extending its service life.

[0003] After prolonged use, the sealing strip may experience a decrease in stability and leakage. The sealing strip in the aforementioned application does not have an auxiliary support structure for sealing during use, and leakage may occur after prolonged use, causing unnecessary trouble for the use of the sealing strip. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof and anti-aging sealing strip to solve the problem mentioned in the background art that, during use, the lack of an auxiliary support sealing structure leads to leakage after prolonged use, causing unnecessary trouble for the use of the sealing strip.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof and anti-aging sealing strip, comprising a sealing strip body, the front of which is an inverted "U" shape, and side anti-slip grooves are provided on both the left and right sides of the sealing strip body, and a pressure-increasing strip is fixedly connected to the surface of the sealing strip body;

[0006] The sealing strip body is made of engineering materials, and an air bladder is adhered to the inner wall of the sealing strip body. A connecting block is movably arranged inside the sealing strip body, and the surface of the sealing strip body is coated with a fluorocarbon coating.

[0007] Preferably, the engineering material is a polymer material, and the polymer material is thermoplastic vulcanized rubber.

[0008] Preferably, the polymer material is polypropylene.

[0009] Preferably, the engineering material is a metal material, and the metal material is stainless steel strip.

[0010] Preferably, the metal material is aluminum trim.

[0011] Preferably, the engineering material is a fiber material, specifically a fleece tape.

[0012] Preferably, the anti-slip grooves on the side are evenly distributed on the side of the sealing strip body, and an end sealing strip is fixedly connected to the upper surface of the sealing strip body.

[0013] Preferably, the surface of the sealing strip body is provided with a mating groove, and the mating grooves are distributed on both sides of the sealing strip body. The mating grooves correspond one-to-one with the mating blocks, and the mating blocks are disposed inside the mating grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the leak-proof and anti-aging sealing strip adopts a novel structural design, the specific details of which are as follows:

[0015] (1) When installing the sealing strip body, the sealing strip body is inserted into the required position. During this process, the airbag is squeezed and deformed. The side of the airbag expands and finally the airbag presses against the inner walls of both sides of the sealing strip body, which plays an auxiliary support role. This allows the left and right sides of the sealing strip body to fit tightly with the installation position, thus optimizing the sealing effect.

[0016] Furthermore, after the sealing strip body is properly aligned, the side anti-slip grooves increase the friction between the sealing strip body and the installation location. At the same time, the side anti-slip grooves are evenly distributed on the surface of the sealing strip body, optimizing the anti-slip and anti-falling effect.

[0017] Furthermore, depending on actual usage requirements, the sealing strip body can also be installed with a recessed position, so that the end sealing strip contacts the installation position. In this case, the end sealing strip also plays a role in increasing friction and optimizing the anti-falling effect.

[0018] (2) The leak-proof and anti-aging sealing strip has a fluorocarbon coating on the surface of the sealing strip body, which optimizes the anti-corrosion effect of the sealing strip body. The fluorocarbon coating can not only resist chemical corrosion, but also resist atmospheric corrosion, and can also resist ultraviolet corrosion, preventing the sealing strip body from being damaged and aged, and extending the service life of the sealing strip body.

[0019] Furthermore, when the main body of the sealing strip is made of polymer material, it has excellent elasticity, can be compressed and deformed, and can be installed in multiple positions. When the main body of the sealing strip is made of metal material, it has high strength and high durability, as well as excellent fire resistance. When the main body of the sealing strip is made of fleece, it has excellent sound insulation.

[0020] (3) When the length of the sealing strip body is insufficient, the leak-proof and anti-aging sealing strip can be connected with the adjacent sealing strip body. The specific operation is to insert the connecting block into the connecting groove and then insert the connecting block into the adjacent sealing strip body. This can quickly connect the adjacent sealing strip bodies, expand the application range of the sealing strip body, and reduce its limitations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure between the sealing strip body and the end sealing strip of this utility model;

[0022] Figure 2 This is a schematic diagram of the distribution of the anti-slip grooves on the side of this utility model.

[0023] Figure 3 This is a schematic diagram of the connection structure between the sealing strip body and the mating block of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the connection structure between adjacent sealing strips of this utility model;

[0026] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the connection structure at point B.

[0027] In the diagram: 1. Sealing strip body; 2. Side anti-slip groove; 3. Pressure bar; 4. Connecting groove; 5. Connecting block; 6. Airbag; 7. End sealing strip. Detailed Implementation

[0028] 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.

[0029] This utility model provides the following technical solution: a leak-proof and anti-aging sealing strip:

[0030] Example 1: The airbag 6 provides auxiliary support, optimizing the sealing performance and anti-detachment effect of the sealing strip body 1. Figures 1-4 As shown, it includes a sealing strip body 1. The front view of the sealing strip body 1 is an inverted "U" shape, and the left and right sides of the sealing strip body 1 are provided with side anti-slip grooves 2. A pressure-increasing strip 3 is fixedly connected to the surface of the sealing strip body 1. The sealing strip body 1 is made of engineering material, and an airbag 6 is adhered to the inner wall of the sealing strip body 1. The side anti-slip grooves 2 are evenly distributed on the side of the sealing strip body 1, and an end sealing strip 7 is fixedly connected to the upper surface of the sealing strip body 1.

[0031] When installing the sealing strip body 1, it is inserted into the desired position. During this process, the airbag 6 is compressed and deformed, expanding its sides. Ultimately, the airbag 6 presses against the inner walls of both sides of the sealing strip body 1, providing auxiliary support and ensuring that the left and right sides of the sealing strip body 1 fit tightly against the installation position, thus optimizing the sealing effect. After the sealing strip body 1 is properly aligned, the side anti-slip grooves 2 increase the friction between the sealing strip body 1 and the installation position. Furthermore, the side anti-slip grooves 2 are evenly distributed on the surface of the sealing strip body 1, optimizing the anti-slip and anti-fall-off effect. Depending on actual usage requirements, the sealing strip body 1 can also be installed with the recessed position, allowing the end sealing strip 7 to contact the installation position. In this case, the end sealing strip 7 also increases friction, further optimizing the anti-fall-off effect.

[0032] Example 2: The fluorocarbon coating on the surface of the sealing strip body 1 optimizes the anti-aging effect of the sealing strip body 1. The surface of the sealing strip body 1 is sprayed with a fluorocarbon coating. The engineering material is a polymer material, and the polymer material is thermoplastic vulcanized rubber. The polymer material is polypropylene. The engineering material is a metal material, and the metal material is a stainless steel strip. The metal material is an aluminum bright strip. The engineering material is a fiber material, specifically a fleece strip.

[0033] The fluorocarbon coating on the surface of the sealing strip body 1 optimizes its corrosion resistance. The fluorocarbon coating is not only resistant to chemical corrosion but also to atmospheric corrosion and ultraviolet corrosion, preventing damage and aging of the sealing strip body 1 and extending its service life. When the sealing strip body 1 is made of polymer material, it has good elasticity, can be compressed and deformed, and can be installed in multiple positions. When the sealing strip body 1 is made of metal, it has high strength and durability, as well as excellent fire resistance. When the sealing strip body 1 is made of fleece, it has excellent sound insulation.

[0034] Example 3: By using the mating block 5 and mating groove 4, adjacent sealing strip bodies 1 can be quickly mated, expanding the scope of application, such as... Figure 5 As shown, a mating block 5 is movably arranged inside the sealing strip body 1, and a mating groove 4 is opened on the surface of the sealing strip body 1. The mating grooves 4 are distributed on both sides of the sealing strip body 1, and the mating grooves 4 correspond one-to-one with the mating blocks 5. The mating blocks 5 are arranged inside the mating grooves 4.

[0035] When the length of the sealing strip body 1 is insufficient, it can be connected with an adjacent sealing strip body 1. Specifically, the connecting block 5 is inserted into the connecting groove 4, and then the connecting block 5 is inserted into the connecting groove 4 on the surface of the adjacent sealing strip body 1. This allows for quick connection of adjacent sealing strip bodies 1, expanding the application range of the sealing strip body 1 and reducing its limitations.

[0036] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof and anti-aging sealing strip, comprising a sealing strip body (1), wherein the front of the sealing strip body (1) is an inverted "U" shape, and side anti-slip grooves (2) are provided on both the left and right sides of the sealing strip body (1), and a pressure-increasing strip (3) is fixedly connected to the surface of the sealing strip body (1); Its features are: The sealing strip body (1) is made of engineering material, and an airbag (6) is bonded to the inner wall of the sealing strip body (1). A docking block (5) is movably arranged inside the sealing strip body (1), and a fluorocarbon coating is sprayed on the surface of the sealing strip body (1).

2. The leak-proof and anti-aging sealing strip according to claim 1, characterized in that: The engineering material is a polymer material, and the polymer material is thermoplastic vulcanized rubber.

3. The leak-proof and anti-aging sealing strip according to claim 2, characterized in that: The polymer material is polypropylene.

4. The leak-proof and anti-aging sealing strip according to claim 1, characterized in that: The engineering material is a metallic material, specifically stainless steel strip.

5. The leak-proof and anti-aging sealing strip according to claim 4, characterized in that: The metal material is aluminum trim.

6. The leak-proof and anti-aging sealing strip according to claim 1, characterized in that: The engineering material is a fiber material, specifically a fleece tape.

7. The leak-proof and anti-aging sealing strip according to claim 1, characterized in that: The side anti-slip grooves (2) are evenly distributed on the side of the sealing strip body (1), and the upper surface of the sealing strip body (1) is fixedly connected with an end sealing strip (7).

8. The leak-proof and anti-aging sealing strip according to claim 1, characterized in that: The sealing strip body (1) has a mating groove (4) on its surface, and the mating groove (4) is distributed on both sides of the sealing strip body (1). The mating groove (4) corresponds to the mating block (5) one by one, and the mating block (5) is disposed inside the mating groove (4).

Citation Information

Patent Citations

  • Automobile sealing strip

    CN206416827U

  • Sealing strip with anti-aging function

    CN216279368U