A weather strip for a vehicle door

Abstract

The utility model provides a kind of fender strip for vehicle door, it is related to the technical field of automobile parts manufacturing, including circle area, the outer wall of circle area is fixedly installed with triangle area, the inner wall of triangle area is equipped with fire -retardant silica gel assembly, fire -retardant silica gel assembly includes silica gel raw material, the outer wall of silica gel raw material is equipped with flame retardant agent.The utility model, by setting the composite structure design of circle area and triangle area, cooperate accurate size parameter, can fill the space between vehicle door and door frame in all directions, without gap, form tight sealing layer in the moment when vehicle door is closed, effectively block rainwater, dust invasion, while significantly reduce external noise, create quiet, clean environment in car.In addition, fire -retardant silica gel assembly has 70±5shoreA moderate hardness and-40~+70 ℃ wide temperature working range, so that fender strip can maintain stable elasticity and sealing performance under different climatic conditions and altitude environment, substantially widen the applicable scenario of product.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a door seal strip. Background Technology

[0002] In the process of automobile manufacturing and use, door sealing strips, as a core component that isolates the interior and exterior environments of the vehicle, are directly related to the vehicle's sealing performance, comfort, and safety, and are key to ensuring the driving experience.

[0003] Traditional car door sealing strips often use a single structural design, which makes it difficult to fit the complex and varied gaps between the door and the door frame. This results in blind spots in the seal, allowing rainwater and dust to easily enter the car through these gaps while the vehicle is in motion. This not only contaminates the interior but may also damage the electronic equipment inside the vehicle. At the same time, due to the poor seal, a large amount of external noise can enter the car, seriously affecting the comfort of the passengers. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution: a door sealing strip, including a circular area, a triangular area fixedly installed on the outer wall of the circular area, and flame-retardant silicone components provided on the inner walls of both the circular area and the triangular area. The flame-retardant silicone components include silicone raw materials, a flame retardant is provided on the outer wall of the silicone raw materials, a crosslinking agent is provided on the outer wall of the flame retardant, and a reinforcing filler is provided on the outer wall of the crosslinking agent.

[0006] Preferably, the triangular area has a cross-sectional dimension of 4mm × 9.2mm and a length of 4750mm, and a color of BS5252F00A07. Here, the specific 4mm × 9.2mm cross-sectional dimension and 4750mm length of the triangular area allow it to precisely fit the spatial structure of the door gap, achieving a seamless connection; the BS5252F00A07 gray color not only coordinates with the interior or exterior colors of the door, enhancing aesthetics, but also, as a standard color, facilitates production and quality control, ensuring product consistency.

[0007] Preferably, the annular area has a hollow circular structure with a diameter of Ø5.0000mm, an outer contour diameter of Ø7.0000mm, and an annular height of 9.2000mm. This design of the hollow circular structure allows for good elastic deformation. During door closing, when the annular area is compressed, the hollow structure better absorbs pressure, generating greater deformation and thus more fully filling the door gaps. This significantly improves waterproofing, dustproofing, and sound insulation, while the optimized dimensions also help reduce material consumption and lower costs.

[0008] Preferably, the hardness of the flame-retardant silicone component is 70±5 Shore A, and the operating temperature of the circular and triangular areas conforms to PRIIA standard 305-912, suitable for environments with an average sea level above 609.6m and a temperature range of -40℃ to +70℃. Here, the 70±5 Shore A hardness of the flame-retardant silicone component ensures that the sealing strip has sufficient elasticity to accommodate door gap deformation while possessing sufficient support strength, preventing permanent deformation due to frequent compression. The operating temperature conforming to PRIIA standard 305-912, suitable for environments with temperatures ranging from -40℃ to +70℃ and an average sea level above 609.6m, broadens the application scenarios of the sealing strip, maintaining stable sealing performance and physical properties regardless of extreme cold, heat, or high altitude.

[0009] Preferably, the elastic deformation of the annular structure in the circular area fills the gaps in the car door, achieving waterproofing, dustproofing, and sound insulation functions. Here, the elastic deformation characteristics of the annular structure in the circular area allow it to quickly adapt to changes in the gap between the car door and the door frame when the door is closed, tightly fitting both sides of the gap. This effectively prevents rainwater, dust, and other external pollutants from entering the vehicle, while absorbing the impact force when the door closes, reducing noise transmission, creating a quiet and clean environment inside the vehicle, and improving passenger comfort.

[0010] Preferably, the annular and triangular areas, through a reasonable wall thickness design and bottom support structure, enhance fatigue and wear resistance, ensuring stable sealing performance over long-term use. Here, the reasonable wall thickness design and bottom support structure of the annular and triangular areas evenly distribute the pressure generated when the door closes, preventing deformation or damage to the rubber strip caused by localized stress concentration; it also enhances the fatigue and wear resistance of the rubber strip, extends its service life, reduces replacement frequency, ensures long-term stable sealing performance of the door, and lowers maintenance and vehicle operating costs.

[0011] Preferably, the cross-sections of the circular and triangular rubber strips are composite. Here, the composite cross-section, composed of the circular and triangular areas, has a more complex mechanical structure and sealing path compared to a single structure. This composite shape not only adapts to the complex geometry of the door gaps but also provides multiple sealing guarantees in different directions. When the door is subjected to vibration or slight displacement, the composite structure can maintain the sealing effect through the coordinated deformation of different areas, greatly improving the reliability and stability of the seal.

[0012] Preferably, the annular and triangular areas, utilizing the elasticity of the rubber in their annular structure, deform under pressure when the door is closed to fill the gap between the door and the door frame. The hollow circle inside the triangular area and the thickness of the rubber wall together provide elastic recovery force, ensuring that the annular and triangular areas remain tightly adhered to the door sealing surface. Here, the annular and triangular areas, utilizing the elasticity of the rubber in their annular structure, deform under pressure when the door is closed to fill the gap between the door and the door frame. The hollow circle inside the triangular area and the thickness of the rubber wall provide elastic recovery force, ensuring that the rubber strip remains tightly adhered to the door sealing surface. Even under conditions of frequent door opening and closing and vibrations during vehicle operation, the rubber strip maintains good sealing pressure, effectively preventing external environmental factors from interfering with the interior environment and ensuring the durability and stability of the door sealing performance.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, through the composite structural design of circular and triangular areas, combined with precise dimensional parameters, it can fill the space between the car door and the door frame seamlessly and comprehensively. It quickly forms a tight sealing layer the moment the door closes, effectively preventing rainwater and dust from entering, while significantly reducing external noise and creating a quiet and clean environment inside the vehicle. Furthermore, the flame-retardant silicone component possesses a moderate hardness of 70±5 Shore A and a wide operating temperature range of -40℃ to +70℃, allowing the adhesive strip to maintain stable elasticity and sealing performance under different climatic conditions and altitudes, greatly expanding the product's applicable scenarios.

[0015] 2. In this utility model, by setting a rubber strip and adopting a reasonable wall thickness design and bottom support structure, pressure can be evenly distributed during frequent opening and closing of the car door, avoiding deformation and damage caused by local stress concentration, effectively improving fatigue resistance and wear resistance, extending service life, reducing replacement frequency, and lowering vehicle operating costs. Simultaneously, the flame retardant in the flame-retardant silicone component gives the rubber strip excellent fire-resistant properties, effectively delaying the spread of fire in the event of an accidental fire, providing reliable protection for passenger safety; the standard color (BS5252F00A07) not only enhances aesthetics but also facilitates quality control during the production process, ensuring product consistency. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a door seam sealing strip is provided for this utility model;

[0017] Figure 2 A cross-sectional structural diagram of a door sealing strip is provided for this utility model;

[0018] Figure 3 This utility model proposes a door seam sealing strip. Figure 2 Schematic diagram at point A in the middle;

[0019] Figure 4 This utility model provides a dimensional diagram of a door seam sealing strip.

[0020] Legend:

[0021] 1. Circular area; 2. Triangular area; 3. Flame-retardant silicone components;

[0022] 31. Silicone raw materials; 32. Flame retardants; 33. Crosslinking agents; 34. Reinforcing fillers. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1

[0026] Please see Figures 1-4 This utility model provides a technical solution: a door sealing strip, including a circular area 1, a triangular area 2 fixedly installed on the outer wall of the circular area 1, and flame-retardant silicone components 3 provided on the inner walls of both the circular area 1 and the triangular area 2. The flame-retardant silicone components 3 include silicone raw material 31, flame retardant 32 provided on the outer wall of the silicone raw material 31, crosslinking agent 33 provided on the outer wall of the flame retardant 32, and reinforcing filler 34 provided on the outer wall of the crosslinking agent 33.

[0027] The cross-sectional dimensions of Triangle Zone 2 are 4mm × 9.2mm, with a length of 4750mm, and a color of BS5252F00A07. The specific 4mm × 9.2mm cross-sectional dimensions and 4750mm length of Triangle Zone 2 allow it to precisely fit the spatial structure of the door gap, achieving a seamless connection. The gray color BS5252F00A07 not only coordinates with the interior or exterior colors of the door, enhancing aesthetics, but also, as a standard color, facilitates production and quality control, ensuring product consistency.

[0028] The interior of the annular area 1 is a hollow circular structure with a diameter of Ø5.0000mm, an outer contour diameter of Ø7.0000mm, and an annular height of 9.2000mm. The size design of the hollow circular structure in the annular area 1 allows for excellent elastic deformation. During door closing, when the annular area 1 is compressed, the hollow structure can better absorb pressure, generating greater deformation and thus more fully filling the door gaps. This significantly improves waterproofing, dustproofing, and sound insulation, while the optimized dimensions also help reduce material consumption and lower costs.

[0029] The flame-retardant silicone component 3 has a hardness of 70±5 Shore A. The operating temperature of the circular area 1 and the triangular area 2 conforms to PRIIA standard 305-912, making it suitable for environments with an average sea level above 609.6m and a temperature range of -40℃ to +70℃. Here, the 70±5 Shore A hardness of the flame-retardant silicone component 3 ensures that the sealing strip possesses sufficient elasticity to accommodate door gap deformation while maintaining adequate support strength, preventing permanent deformation due to frequent compression. The operating temperature conforms to PRIIA standard 305-912, making it suitable for environments ranging from -40℃ to +70℃ and with an average sea level above 609.6m, thus broadening the application scenarios of the sealing strip. It maintains stable sealing performance and physical properties regardless of extreme cold, heat, or high altitude.

[0030] The elastic deformation of the annular structure in Zone 1 fills the gaps in the car door, achieving waterproofing, dustproofing, and sound insulation. Here, the elastic deformation characteristics of the annular structure in Zone 1 allow it to quickly adapt to changes in the gap between the door and the door frame when the door closes, tightly fitting both sides of the gap. This effectively prevents rainwater, dust, and other external pollutants from entering the vehicle, while also absorbing the impact force when the door closes, reducing noise transmission, creating a quiet and clean environment inside the vehicle, and improving passenger comfort.

[0031] The annular area 1 and triangular area 2, through their optimized wall thickness design and bottom support structure, enhance fatigue and wear resistance, ensuring long-term sealing and stability. Here, the optimized wall thickness design and bottom support structure of annular area 1 and triangular area 2 evenly distribute the pressure generated when the door closes, preventing deformation or damage to the rubber strip caused by localized stress concentration; this enhances the rubber strip's fatigue and wear resistance, extends its service life, reduces replacement frequency, ensures long-term stable sealing performance of the door, and lowers maintenance and vehicle operating costs.

[0032] The cross-sections of the rubber strips in the circular area 1 and triangular area 2 are composite. Compared to a single structure, this composite cross-section has a more complex mechanical structure and sealing path. This composite shape not only adapts to the complex geometry of the door gaps but also provides multiple sealing guarantees in different directions. When the door is subjected to vibration or slight displacement, the composite structure maintains the sealing effect through the coordinated deformation of different areas, greatly improving the reliability and stability of the seal.

[0033] The annular area 1 and triangular area 2, utilizing the elasticity of the rubber in their ring structure, deform under pressure when the door is closed to fill the gap between the door and the door frame. The hollow circle inside triangular area 2 and the thickness of the rubber wall provide elastic recovery force, ensuring that the annular area 1 and triangular area 2 remain firmly attached to the door sealing surface. Even under conditions of frequent door opening and closing and vibrations during vehicle operation, the rubber strip maintains good sealing pressure, effectively preventing external environmental factors from interfering with the interior environment and ensuring the durability and stability of the door sealing performance.

[0034] Working Principle: Based on the size and shape of the door gap, the triangular area 2, with a cross-sectional size of 4mm × 9.2mm and a length of 4750mm, is matched with the door frame slot. The narrow part of the triangular area 2 has a size of 1.8240mm and a bottom width of 3.9985mm, which can be precisely embedded into the door frame slot, ensuring that the adhesive strip will not wobble from side to side after installation, achieving initial fixation. The circular area 1 is aligned with the gap position when the door and door frame are closed. The hollow circular structure of the circular area 1, with an inner diameter of Ø5.0000mm and an outer contour diameter of Ø7.0000mm, provides a certain amount of room for movement during installation, which can accommodate slight dimensional deviations in the door gap and reserve space for subsequent elastic deformation. When the door is closed, the circular area 1 and the triangular area 2 are subjected to the squeezing force of the door and door frame. The annular structure of the ring-shaped area 1 undergoes elastic deformation under compression, and the hollow circular structure inside helps absorb pressure, allowing the ring-shaped area 1 to fill the gap between the door and the door frame to a greater extent. The triangular area 2, using its own structure, further fills the gap areas that the ring-shaped area 1 cannot cover, forming a multi-directional seal. The flame-retardant silicone component 3, composed of silicone raw material 31, flame retardant 32, crosslinking agent 33, and reinforcing filler 34, is made by the ring-shaped area 1 and the triangular area 2. After being compressed, it adheres tightly to the door sealing surface due to its hardness of 70±5 Shore A, effectively preventing rainwater, dust, and other pollutants from entering the vehicle. At the same time, it absorbs the impact force of closing the door and reduces noise transmission. The ring-shaped area 1 and the triangular area 2, through reasonable wall thickness design and bottom support structure, evenly distribute the pressure generated during door closing and driving. The wider support structure at the bottom increases the contact area with the door frame, preventing localized stress concentration that could lead to deformation or damage to the rubber strip and reducing localized rubber wear. Simultaneously, the flame-retardant properties of the flame-retardant silicone component 3 effectively delay or prevent the spread of fire in the event of an accidental ignition source, enhancing safety. During vehicle operation, the door is subjected to vibrations, bumps, and other external forces, causing slight changes in the gap between the door and the door frame. The composite cross-section composed of the circular area 1 and the triangular area 2, with its complex mechanical structure and sealing path, maintains a continuous seal through the coordinated deformation of different areas. The hollow circle inside the triangular area 2 and the thick rubber wall continuously provide elastic recovery force, ensuring that the rubber strip always adheres tightly to the door sealing surface, preventing external environmental factors from interfering with the interior environment.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A weatherstrip for a vehicle door, comprising a ring-shaped section (1), characterized in that: A triangular area (2) is fixedly installed on the outer wall of the circular area (1). Both the inner walls of the circular area (1) and the triangular area (2) are provided with flame-retardant silicone components (3). The flame-retardant silicone components (3) include silicone raw material (31). The outer wall of the silicone raw material (31) is provided with flame retardant (32). The outer wall of the flame retardant (32) is provided with crosslinking agent (33). The outer wall of the crosslinking agent (33) is provided with reinforcing filler (34).

2. A weatherstrip for a vehicle door according to claim 1, characterized in that: The cross-sectional dimensions of the triangular area (2) are 4mm×9.2mm, the length is 4750mm, and the color is BS5252F00A07.

3. The weatherstrip of claim 1 wherein: The inner part of the ring-shaped zone (1) is a hollow circle structure with a diameter of 5.0000 mm, the outer contour diameter is 7.0000 mm, and the annular height is 9.2000 mm.

4. The weatherstrip of claim 1 wherein: The hardness of the flame-retardant silicone component (3) is 70±5 Shore A. The working temperature of the circular area (1) and the triangular area (2) conforms to PRIIA specification 305-912 and is suitable for altitudes above the average sea level of 609.6m with a temperature range of -40℃ to +70℃.

5. The weatherstrip of claim 1 wherein: The elastic deformation of the annular structure of the ring-shaped area (1) fills the gaps in the car door, achieving waterproof, dustproof, and soundproof functions.

6. A door seam sealing strip according to claim 1, characterized in that: The circular area (1) and the triangular area (2) are designed with reasonable wall thickness and bottom support structure to improve fatigue resistance and wear resistance, and ensure the stability of sealing performance during long-term use.

7. A weatherstrip according to claim 6, wherein: The cross-sections of the rubber strip body in the circular area (1) and the triangular area (2) are composite.

8. A weatherstrip for a vehicle door according to claim 6, wherein: The circular area (1) and the triangular area (2) are squeezed and deformed when the door is closed by means of the rubber elasticity of the ring structure to fill the gap between the door and the door frame. The hollow circle inside the triangular area (2) and the rubber wall thickness together provide elastic recovery force, so that the circular area (1) and the triangular area (2) continue to be in close contact with the door sealing surface.

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