Sealing and noise-reducing side wall sealing strip and whole vehicle sealing system

Abstract

The invention belongs to the technical field of automobile parts of automobile enclosure sealing strips, and particularly relates to a side enclosure sealing strip for sealing and noise reduction and a whole automobile sealing system comprising the side enclosure sealing strip. The side wall sealing strip is applied to the frameless vehicle door and comprises a side wall sealing strip body structure composed of a straight section rubber strip and a connecting corner, the straight section rubber strip is installed on a side wall decoration bright strip of the frameless vehicle door, and the upper portion of the connecting corner is installed on the side wall decoration bright strip; a sponge rubber plug core is plugged in the side wall sealing strip main body structure; according to the whole vehicle sealing system and the side wall sealing strip, the problem that a quarter window area in a frameless vehicle door vehicle type is not sealed tightly is solved, and the technical purposes of sealing and noise reduction are achieved by enhancing local supporting force and improving assembling precision.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile parts, and in particular relates to a side sealing strip for sealing and noise reduction and a whole vehicle sealing system. Background Art

[0002] With the rapid development of the automotive industry, consumers are demanding increasingly higher levels of vehicle comfort. Automotive comfort encompasses many aspects, with excellent sealing and noise reduction being a key factor. A quiet interior allows drivers and passengers to converse and enjoy the entertainment system without being disturbed by external noise. Especially in luxury and high-end vehicles, excellent sealing and noise reduction are a key selling point and a reflection of brand value. Effective sealing and noise reduction reduces noise-induced vibration, enhances overall vehicle comfort and stability, and strengthens driver and passenger recognition and trust in the vehicle's quality.

[0003] The car's sealing system includes multiple sealing strips, and the side panel sealing strips play a key role in the overall sealing of the car body. The side panel sealing strips are installed between the car door and the side panel. When the car door is closed, the sealing strips are squeezed and elastically deformed to fill the gap, preventing air, dust, and moisture from entering the car and blocking the spread of noise. In the frameless door sealing system, the side panel sealing strips need to match the triangular window sealing strips and the door glass to ensure sealing. However, the triangular window sealing strips are rubber products, and their hardness cannot reach the same level as that of the glass. Therefore, the extrusion force between the triangular window sealing strips and the side panel sealing strips will be significantly smaller than the extrusion force between the door glass and the side panel sealing conditions, resulting in water leakage, air leakage and other problems in the transition area between the triangular window sealing strips and the door glass.

[0004] Therefore, there is an urgent need to improve the existing side sealing strip structure and the vehicle sealing system to solve the technical defects of the existing technology. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a side sealing strip with sealing and noise reduction to address the problem of poor sealing in the triangular window area of ​​frameless door models in response to the technical defects of the existing technology, and to achieve the technical goals of sealing and noise reduction by enhancing local supporting force and improving assembly accuracy.

[0006] In order to achieve the above-mentioned invention objectives, this application implements the following technical solutions: A side sealing strip for sealing and noise reduction, used in frameless vehicle doors, comprising a main body of the side sealing strip consisting of a straight rubber strip and a connecting angle. The straight rubber strip is mounted on the side decorative bright strip of the frameless vehicle door, and the upper portion of the connecting angle is mounted on the side decorative bright strip. The inner plug of the side sealing strip main body structure is provided with a sponge rubber plug core.

[0007] The above technical solution produces the following technical effects: This application significantly increases the compression deformation and elastic recovery of the side panel sealing strip by inserting a sponge rubber plug into the main structure. This enhances the localized adhesion of the frameless door glass when closed, resolving the issues of insufficient support and poor sealing at the transition between the triangular window and the glass in traditional structures. Furthermore, the sealing strip structure of this invention is compatible with a variety of frameless door models and features a modular design, improving the overall vehicle quietness and user comfort.

[0008] As a further improvement of the sealing and noise-reducing side sealing strip of the present application, an injection-molded integral connection structure is formed between the corner and the straight strip.

[0009] As a further improvement of the sealing and noise-reducing side sealing strip of the present application, the sponge rubber plug core is arranged in the connection area between the corner and the straight rubber strip, and the sponge rubber plug core is arranged in the straight rubber strip section in the connection area.

[0010] As a further improvement of the sealing and noise-reducing side sealing strip of the present application, the core material of the sponge rubber plug is EPDM sponge rubber, the EPDM sponge rubber is extruded and fixed to the main structure of the side sealing strip with glue.

[0011] As a further improvement of the sealing and noise-reducing side panel sealing strip of the present application, a positioning boss is provided at the corner, and the positioning boss is snap-fitted and installed in the groove of the side panel decorative bright strip.

[0012] As a further improvement of the sealing and noise-reducing side panel sealing strip of the present application, the straight rubber strip is co-extruded by EPDM dense rubber and EPDM sponge rubber, and the straight rubber strip is clipped and installed on the side panel decorative bright strip.

[0013] As a further improvement of the sealing and noise-reducing side sealing strip of the present application, the joint corners are injection-molded with EPDM dense rubber.

[0014] The second purpose of the present invention is to integrate the improved side sealing strip into the frameless door vehicle sealing system to address the technical defects of the existing technology, and to build a complete sealing system suitable for frameless structure that meets the requirements of quietness, airtightness and watertightness.

[0015] In order to achieve the above-mentioned invention objectives, this application implements the following technical solutions: A whole vehicle sealing system comprises any of the above-mentioned side panel sealing strips, a side panel decorative bright strip installed on the vehicle body side panel, a door sheet metal and a door glass fixed to the door sheet metal; when the door glass is closed, the end of the straight rubber strip in the side panel sealing strip away from the side panel decorative bright strip contacts and seals with the door glass, and the corner of the side panel sealing strip is fixed to the side panel of the door sheet metal; a triangular window sealing strip is fixed to the triangular window area of ​​the door sheet metal.

[0016] The above technical solution produces the following technical effects: The side sealing strips achieve a seal with the door glass through straight sections, forming a transition seal with the triangular window area through the corner joints. The side decorative brightwork and door sheet metal provide structural support, creating a complete and continuous sealing path when the door is closed, improving the airtightness and watertightness of the entire vehicle. This system features a compact structure and clearly defined component synergies, adapting to the side sealing requirements of various frameless door models. It offers excellent versatility and replicability, facilitating platform-based manufacturing and automated assembly.

[0017] As a further improvement of the vehicle sealing system of the present application, the joint corners in the side panel sealing strip are fixed to the side panel of the door sheet metal by double-sided tape.

[0018] As a further improvement of the vehicle sealing system of the present application, the sponge rubber plug core is fixed in the transition area between the triangular window sealing strip and the door glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the explosion of the side sealing strip of the present invention.

[0020] Figure 2 It is an exploded and enlarged schematic diagram of the corner end of the side sealing strip of the present invention.

[0021] Figure 3 It is a schematic cross-sectional view of the side sealing strip of the present invention.

[0022] Figure 4 It is a partially enlarged schematic diagram of the assembly and matching environment of the vehicle sealing system of the present invention.

[0023] Figure 5 It is a schematic cross-sectional view of the matching of the side panel sealing strip and the triangular window sealing strip of the present invention.

[0024] Figure 6 It is a cross-sectional schematic diagram of the matching of the side sealing strip and the door glass of the present invention.

[0025] In the figure: 1 - straight rubber strip; 2 - corner joint; 3 - sponge rubber plug core; 4 - positioning boss; 5 - double-sided tape; 6 - side panel decorative strip; 7 - triangle window sealing strip; 8 - door glass; 9 - door sheet metal. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0028] As is known, in automotive body sealing systems, especially those in frameless door models, the door glass 8 lacks the support of a traditional metal window frame when closed. Its sealing performance relies entirely on the compressive force between the side panel sealing strip and the glass. Existing sealing strips are typically made of a single material (e.g., pure EPDM dense rubber or ordinary sponge rubber), with essentially uniform compression elasticity along their entire length. This fails to account for the unique characteristics and local structural variations of the door structure.

[0029] In frameless doors, the triangular window area at the front end of the side panel seal is a special structural area. The triangular window seal 7 is usually made of soft rubber and is less rigid than the door glass 8. Therefore, when the door is closed, the pressure exerted by the door glass 8 on the side panel seal is significantly greater than that exerted by the triangular window seal 7. This results in a significant difference in compression force on the side panel seal at the transition between the glass and the triangular window, leading to the following technical defects: 1) Unbalanced sealing pressure: The pressing force in the glass contact area is large, while the pressing force in the triangular window contact area is insufficient.

[0030] 2) Hidden dangers of water and air leakage: The transition between the triangular window and the glass lacks sufficient support and sealing pressure, forming a weak sealing link.

[0031] 3) The wind noise problem is prominent: air disturbance is easily generated in the transition area, resulting in a significant increase in driving wind noise, which is especially serious under high-speed driving conditions.

[0032] To address the aforementioned issues, the present applicant discovered that some frameless door models often experience significant wind noise and water leakage during driving, particularly at high speeds and in the rain, impacting the driving experience and comfort. This discovery led to the discovery of the fundamental flaw of the existing side panel sealing strips, particularly their severely insufficient compression support capacity in the transition zone. This inventive step motivated the present application.

[0033] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Although the present application discloses the preferred embodiments below, it is not intended to limit the claims. Any person skilled in the art may make several possible changes and modifications without departing from the concept of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0035] Example 1 like Figure 1-4 As shown, the present application improves the existing side panel sealing strip structure to address the technical deficiencies of the existing technical solutions. Specifically, the side panel sealing strip of the present application is applied to frameless vehicle doors and includes a side panel sealing strip main structure consisting of a straight rubber strip 1 and a corner 2. The straight rubber strip 1 is mounted on the side panel decorative bright strip 6 of the frameless vehicle door, and the upper portion of the corner 2 is mounted on the side panel decorative bright strip 6. The internal plug of the side panel sealing strip main structure is provided with a sponge rubber plug core 3.

[0036] This application introduces a structural differentiation design and a local performance enhancement mechanism inside the side sealing strip to compensate and optimize the sealing pressure force in the transition area between the triangular window and the door glass 8 in the frameless door structure, thereby improving the continuity and stability of the entire sealing path.

[0037] Specifically, the present application divides the side sealing strip into two parts: a straight rubber strip 1 and a corner 2. The straight rubber strip 1 is responsible for the main sealing function and forms a press fit with the door glass 8; the corner 2 is located at the front end and is used for structural transition and transition connection with the triangular window sealing strip 7. This segmented design ensures the matching of the structure in different functional areas. An EPDM sponge rubber plug core 3 is inserted inside the cavity of the straight rubber strip 1 (as the preferred part of the main structure of the side sealing strip) to enable this area to obtain stronger elastic support capacity at the junction of the glass and the triangular window. The sponge rubber plug core 3 has a higher compression deformation and rebound resilience, forming a tighter pre-pressed contact surface after the door is closed, thereby compensating for the problem of insufficient support of the triangular window sealing strip 7.

[0038] Furthermore, the upper portion of the corner 2 features a positioning structure that mates with a slot on the side panel decorative molding 6 to ensure accurate three-dimensional positioning of the side panel seal during assembly, preventing assembly deviation and uneven sealing pressure. Furthermore, the lower portion of the corner 2 is secured to the door sheet metal 9 with double-sided tape 5, further enhancing structural stability.

[0039] Specifically, the integral sealing strip utilizes a co-extrusion process of EPDM dense rubber and EPDM sponge rubber to form a rigid-flexible composite structure. While ensuring overall sealing strength, localized areas (such as those containing the core plug) achieve enhanced compressibility and shape adaptability. Furthermore, the straight rubber strip 1 and the corner joint 2 are joined together through injection molding to form the main structure of the side panel sealing strip. This main structure is secured to the side panel decorative bezel 6 via a snap-fit ​​mechanism. The positioning boss 4 engages within the snap-fit ​​groove of the side panel decorative bezel 6. The corner joint 2 is bonded to the sheet metal side panel of the door sheet metal 9 using double-sided tape 5 to prevent the side panel sealing strip from moving back and forth, potentially affecting sealing performance.

[0040] In summary, through structural optimization, material enhancement, positioning design and zoning control measures, the side sealing strip of this application effectively improves the sealing support force and sealing performance of the triangular window area under the frameless door structure without changing the overall door structure, and solves the problems of air leakage, water leakage and wind noise that are common in the existing technology.

[0041] Example 2 The difference from Example 1 is that: Figure 1-6 As shown, as a further improvement to the technical solution of this application, the corner 2 is provided with a positioning boss 4, which is clipped into the groove of the side panel decorative bright strip 6. After the boss and the bright strip are precisely positioned, the sealing strip can be accurately and stably positioned, eliminating the problem of insufficient sealing compression caused by assembly errors, and ensuring that the entire sealing path maintains a stable and consistent compression state during long-term use.

[0042] Furthermore, the straight rubber strip 1 is co-extruded from EPDM dense rubber and EPDM sponge rubber, and is clipped onto the side panel decorative bright strip 6. The straight rubber strip 1 is produced using co-extrusion of EPDM dense rubber and EPDM sponge rubber, while the corners 2 are injection-molded simultaneously. Localized areas are combined with the sponge rubber plug core 3 to form a composite structure that balances rigidity and flexibility. Furthermore, the corners 2 are injection-molded from EPDM dense rubber. Through the combination of multiple materials, this application further enhances localized compression while maintaining good overall sealing elasticity and resilience, achieving an optimal balance between structure and function.

[0043] Other details are the same as those in Implementation 1 and will not be described in detail in this embodiment.

[0044] Example 3 The difference from Example 1 is that in the frameless door design, the door glass 8 is directly in contact with the side panel sealing system, which places higher requirements on the compression force, installation accuracy and coordinated structure of the sealing system. The traditional structure has insufficient sealing performance in the transition area, which is prone to problems such as wind noise and rainwater penetration. In order to improve the technical defects of the above-mentioned vehicle sealing system, Figure 1-6 As shown, the present application proposes a vehicle sealing system, comprising any of the aforementioned side sealing strips, a side decorative bezel 6 mounted on the vehicle body side, a door sheet metal 9, and a door glass 8 fixed to the door sheet metal 9. When the door glass 8 is closed, the straight section 1 of the side sealing strip, away from the side decorative bezel 6, contacts and seals with the door glass 8, while the corner 2 of the side sealing strip is fixed to the side of the door sheet metal 9. A triangular window sealing strip 7 is fixed to the triangular window area of ​​the door sheet metal 9.

[0045] The triangular window sealing strip 7 and door glass 8 are fixed to the door sheet metal 9, forming an interference fit with the side panel sealing strip when the door is closed, forming a continuous and stable sealing barrier. This complete vehicle sealing system fully utilizes the structural optimization and material reinforcement of the side panel sealing strip. The tight fit of the straight strip 1 and the door glass 8, as well as the synergistic effect of the corner 2 and the triangular window sealing strip 7, effectively enhances the sealing performance when the door is closed. Simultaneously, the side panel decorative bright strip 6 and the door sheet metal 9 provide a solid structural support for the entire sealing system, ensuring the continuity and stability of the sealing path. Furthermore, this complete vehicle sealing system is highly versatile and reproducible, adaptable to a variety of frameless door models, providing automakers with an efficient and reliable sealing solution. In practice, the precise assembly process and positioning design of each component of the complete vehicle sealing system ensures full sealing performance, effectively solving the problems of air leakage, water leakage, and wind noise that exist in traditional frameless door sealing systems, thereby improving the vehicle's quietness and user comfort.

[0046] Furthermore, a sponge rubber plug core 3 is inserted into the body of the side panel seal and glued to the transition area between the triangular window seal 7 and the door glass 8. This addresses issues such as insufficient support from the triangular window seal 7, which can lead to leaks and wind noise. The introduction of the sponge rubber plug core 3 not only enhances the elastic support in this area but also, through its excellent resilience, effectively absorbs the impact force when the door is closed, further improving the stability and durability of the seal. Furthermore, the combination of the sponge rubber plug core 3 and the EPDM dense glue creates a composite structure that combines both rigidity and flexibility, ensuring the strength of the seal while imparting excellent sealing elasticity and shape adaptability, allowing it to better adapt to the complexity and local differences of the door structure.

[0047] Other details that are the same as those in Example 1 are not described in detail in this example.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A side sealing strip for sealing and noise reduction, used in frameless vehicle doors, characterized in that: include: A side sealing strip main structure composed of a straight rubber strip (1) and a connecting angle (2), wherein the straight rubber strip (1) is mounted on the side decorative bright strip (6) of the frameless vehicle door, and the upper portion of the connecting angle (2) is mounted on the side decorative bright strip (6); A sponge rubber plug core (3) is provided inside the side sealing strip main body structure.

2. The side sealing strip for sealing and noise reduction according to claim 1, characterized in that: The connecting angle (2) and the straight rubber strip (1) are connected by an injection-molded integral structure.

3. The side panel sealing strip for sealing and noise reduction according to claim 2, characterized in that: The sponge rubber plug core (3) is inserted in the connection area between the corner (2) and the straight rubber strip (1), and the sponge rubber plug core (3) is arranged in the straight rubber strip (1) section in the connection area.

4. The side sealing strip for sealing and noise reduction according to claim 1, characterized in that: The material of the sponge rubber plug core (3) is EPDM sponge rubber, and the EPDM sponge rubber is extruded and fixed to the main structure of the side sealing strip by glue.

5. The side sealing strip for sealing and noise reduction according to claim 1, characterized in that: The corner (2) is provided with a positioning boss (4), and the positioning boss (4) is clamped and installed in the groove of the side decorative bright strip (6).

6. The side panel sealing strip for sealing and noise reduction according to claim 1, characterized in that: The straight rubber strip (1) is co-extruded from EPDM dense rubber and EPDM sponge rubber, and the straight rubber strip (1) is snap-fitted and mounted on the side decorative bright strip (6).

7. The side sealing strip for sealing and noise reduction according to claim 1, characterized in that: The joint (2) is injection-molded by EPDM dense rubber.

8. A vehicle sealing system, characterized in that: The invention comprises a side sealing strip as claimed in any one of claims 1 to 7, a side decorative bright strip (6) installed on the side of the vehicle body, a door sheet metal (9) and a door glass (8) fixed to the door sheet metal (9), wherein when the door glass (8) is closed, the end of the straight rubber strip (1) in the side sealing strip away from the side decorative bright strip (6) contacts and seals with the door glass (8), and the corner (2) in the side sealing strip is fixed to the side of the door sheet metal (9); and a triangular window sealing strip (7) is fixed to the triangular window area of ​​the door sheet metal (9).

9. The vehicle sealing system according to claim 8, characterized in that: The corners (2) in the side sealing strip are fixed to the side of the door sheet metal (9) via double-sided adhesive tape (5).

10. The vehicle sealing system according to claim 9, characterized in that: The sponge rubber plug core (3) is fixed in the transition area between the triangular window sealing strip (7) and the vehicle door glass (8).

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