Automobile window rubber sealing structure integrated with sound insulation cotton

Abstract

This utility model relates to the field of automotive sealing strip technology and discloses an automotive window rubber sealing structure integrating sound insulation cotton. It includes a rubber sealing body with a first end face and a second end face. The first end face abuts against the window glass, and multiple first cavities are formed within the first end face. These cavities are equidistantly distributed along the width of the rubber sealing body. The second end face is fixedly connected to the window by an adhesive. It also includes a sound insulation cotton body with a second cavity formed within the second end face. The sound insulation cotton body is installed within the second cavity, and the first and second cavities extend along the long side of the rubber sealing body. The sound insulation cotton body installed within the second cavity effectively blocks noise from directly entering the passenger compartment through window gaps. Furthermore, the microporous structure compensates for the shortcomings of porous materials in the low-frequency range, and the sound insulation cotton body expands the high-frequency sound absorption capacity, thereby achieving effective suppression of broadband noise and improving sound insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of automotive sealing strip technology, specifically to a rubber sealing structure for automotive windows that integrates sound insulation cotton. Background Technology

[0002] With the continuous development of the automotive industry and the increasing demands of consumers for driving comfort, vehicle noise, vibration, and harshness (NVH) performance has become one of the important indicators for measuring overall vehicle quality. Among the many sources of noise, wind noise is one of the main components of in-vehicle noise at high speeds, and the window area, as a key interface between the vehicle exterior and the passenger compartment, is often the main channel for wind noise and air leakage. Therefore, the performance of the window sealing system directly affects the vehicle's sound insulation, waterproofing, dustproofing, and airtightness.

[0003] Traditional automotive window rubber seals are primarily made of ethylene propylene diene monomer (EPDM) rubber or thermoplastic elastomers (TPE / TPV), and are bonded to the glass and body panels via a lip structure to achieve a basic sealing function. While this type of structure can meet conventional waterproof and dustproof requirements, it is significantly inadequate in suppressing high-frequency wind noise. Especially at higher vehicle speeds or after the seals age, problems such as increased sealing gaps and sound wave penetration can easily occur, leading to increased interior noise levels and affecting passenger comfort.

[0004] To improve sound insulation, current technologies typically involve placing sound-absorbing cotton or sound-insulating felt separately on the inside of the door trim panels for auxiliary noise reduction. However, this approach is insufficient to effectively block noise from directly entering the passenger compartment through window gaps, impacting the user experience. Utility Model Content

[0005] This utility model provides a rubber sealing structure for automotive windows with integrated sound insulation cotton. By opening a second cavity inside the rubber sealing body to accommodate the sound insulation cotton body, the path of noise directly entering the passenger compartment from the window gap can be reduced while sealing the window glass, thus solving the problem mentioned in the background art that noise can easily enter the passenger compartment from the window gap.

[0006] This utility model provides the following technical solution: An integrated sound-insulating cotton rubber sealing structure for automotive windows includes a rubber sealing body with a first end face and a second end face. The first end face abuts against the window glass, and a plurality of first cavities are formed in the first end face. The plurality of first cavities are equidistantly distributed along the width direction of the rubber sealing body. The second end face is fixedly connected to the window by an adhesive. The structure also includes a sound-insulating cotton body, wherein a second cavity is formed in the second end face, and the sound-insulating cotton body is installed in the second cavity. The first cavity and the second cavity extend along the long side of the rubber sealing body.

[0007] As a preferred embodiment of the present invention, the first cavity is connected to the second cavity through a micropore, and the micropore extends to the second end face.

[0008] As a preferred technical solution of this utility model, a groove is provided on the outer wall of the first end face, and the groove is located at the junction of two adjacent first cavities.

[0009] As a preferred embodiment of this utility model, the top of the rubber sealing body is fixedly connected to a hook-on part, which extends outward from the car window.

[0010] As a preferred embodiment of this utility model, the sound insulation cotton body is made of polypropylene fiber cotton, and the thickness of the sound insulation cotton body ranges from 0.5 to 3 mm.

[0011] As a preferred embodiment of this utility model, the second cavity has a waist-shaped hole structure in cross section, with a short axis dimension ranging from 1 to 3 mm and a long axis dimension ranging from 2 to 5 mm.

[0012] Compared with the prior art, this utility model provides a rubber sealing structure for automotive windows that integrates sound insulation cotton, which has the following beneficial effects: 1. In the automotive window rubber sealing structure with integrated sound insulation cotton, by opening a second cavity in the rubber sealing body and installing the sound insulation cotton body in the second cavity, the path of noise directly entering the passenger compartment from the window gap can be effectively blocked. Moreover, the microporous structure makes up for the shortcomings of porous materials in the low frequency range, and the sound insulation cotton body expands the high frequency sound absorption capacity, thereby achieving effective suppression of broadband (especially mid and low frequency) noise and improving the sound insulation effect.

[0013] The parts of this device not mentioned herein are the same as or can be implemented using existing technologies. The sound insulation cotton body of this utility model is installed in the second cavity, which can effectively block the path of noise directly entering the passenger compartment from the gap of the car window. Moreover, the microporous structure makes up for the shortcomings of porous materials in the low frequency range. The sound insulation cotton body expands the high frequency sound absorption capacity, thereby achieving effective suppression of broadband (especially mid and low frequency) noise and improving the sound insulation effect. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0015] Figure 1 This is a first-person perspective perspective view of the present invention. Figure 2This is a second-view perspective perspective view of the present invention; Figure 3 This is an exploded three-dimensional schematic diagram of the present invention; Figure 4 This is a cross-sectional view of the present invention.

[0016] In the diagram: 1. Rubber sealing body; 101. First cavity; 102. Second cavity; 103. Groove; 104. Micropore; 105. Hanging part; 2. Sound insulation cotton body; 3. Adhesive. Detailed Implementation

[0017] 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.

[0018] Example: Reference Figures 1-4An integrated sound-insulating cotton rubber sealing structure for automotive windows includes a rubber sealing body 1. Preferably, the rubber sealing body 1 is installed inside the window, located within the passenger compartment. The rubber sealing body 1 is made of EPDM rubber or thermoplastic elastomer / thermoplastic vulcanized rubber, preferably EPDM rubber. EPDM rubber exhibits excellent ozone resistance, UV resistance, and weather resistance, with a wide operating temperature range (-50℃ to +120℃, short-term up to 150℃), good elasticity and compression set properties, good electrical insulation, and low water absorption. Furthermore, the thickness of the rubber sealing body 1 ranges from 3-10mm; 8mm is used as an example here. The rubber sealing body 1 has a first end face and a second end face, which are parallel to each other. In use, the first end face abuts against the car window glass, meaning it is in contact with the car window glass. Multiple first cavities 101 are formed within the first end face, equidistantly distributed along the width direction of the rubber sealing body 1. There are two to six first cavities 101, preferably four. By forming multiple first cavities 101 within the rubber sealing body 1, the flexibility of the rubber sealing body 1 is improved, while simultaneously increasing the fit with the car window glass and enhancing the sealing effect. Furthermore, the second end face is fixedly connected to the car window using an adhesive 3. In other words, it is not observed that glue is applied to the second end face or that adhesive is pre-attached to the second end face before installation inside the car window. Applying glue and using adhesive are existing technologies and will not be discussed further here. It also includes a sound-insulating cotton body 2, which is made of polypropylene fiber cotton. Polypropylene fiber cotton is lightweight, hydrophobic, and resistant to chemical corrosion; it also has a high melting point (about 160℃) and good thermal stability. In addition, it can also achieve low VOC, non-toxic and odorless properties. The thickness of the sound-insulating cotton body 2 ranges from 0.5-3mm, preferably 2.5mm. A second cavity 102 is formed in the second end face, and the sound-insulating cotton body 2 is installed in the second cavity 102. The first cavity 101 and the second cavity 102 extend along the long side of the rubber sealing body 1.

[0019] The first cavity 101 is connected to the second cavity 102 via micropores 104, which extend to the second end face. The presence of micropores 104 allows sound waves to partially enter the cavity instead of being completely reflected. This "controllable leakage" avoids the strong sound wave reflection caused by sudden changes in acoustic impedance in traditional fully enclosed rigid cavities. After entering, the sound waves are consumed by the internal sound-absorbing material, thereby reducing transmitted sound energy and secondary radiated noise. In use, by opening the second cavity 102 within the rubber sealing body and installing the sound insulation cotton body 2 inside the second cavity 102, the path of noise directly entering the passenger compartment from the window gaps can be effectively blocked. Moreover, the micropore structure 104 compensates for the shortcomings of porous materials in the low-frequency range, and the sound insulation cotton body 2 expands the high-frequency sound absorption capacity, thereby achieving effective suppression of broadband (especially mid-low frequency) noise and improving the sound insulation effect.

[0020] A groove 103 is formed on the outer wall of the first end face, and the groove 103 is located at the junction of two adjacent first cavities 101. In use, by forming the groove 103 on the first end face, the recess of the groove 103 can not only improve the fit with the glass during the glass lifting process, but also clean the inner wall of the glass, thereby improving the use effect.

[0021] A hook part 105 is fixedly connected to the top of the rubber sealing body 1. The hook part 105 extends outward from the car window, which can improve the fixing strength between the rubber sealing body 1 and the inside of the car window, reduce the phenomenon of displacement of the rubber sealing body 1 during the raising and lowering of the car window glass, and improve the use effect.

[0022] In addition, the second cavity 102 has a waist-shaped hole structure in cross section, with a short axis dimension ranging from 1 to 3 mm and a long axis dimension ranging from 2 to 5 mm. The short axis dimension is preferably 2 mm and the long axis dimension is 4 mm to improve the sealing effect.

[0023] Components not described in detail in this article are existing technologies.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rubber sealing structure for automotive windows with integrated sound insulation cotton, comprising a rubber sealing body (1), characterized in that, The rubber sealing body (1) has a first end face and a second end face. The first end face abuts against the car window glass. Multiple first cavities (101) are opened in the first end face. The multiple first cavities (101) are equidistantly distributed along the width direction of the rubber sealing body (1). The second end face is fixedly connected to the car window by an adhesive (3). It also includes a sound insulation cotton body (2). The second end face has a second cavity (102) and the sound insulation cotton body (2) is installed in the second cavity (102). The first cavity (101) and the second cavity (102) extend along the long side of the rubber sealing body (1).

2. The automotive window rubber sealing structure with integrated sound insulation cotton according to claim 1, characterized in that, The first cavity (101) is connected to the second cavity (102) through a micropore (104), and the micropore (104) extends to the second end face.

3. The automotive window rubber sealing structure with integrated sound insulation cotton according to claim 1, characterized in that, A groove (103) is provided on the outer wall of the first end face, and the groove (103) is located at the junction of two adjacent first cavities (101).

4. The automotive window rubber sealing structure with integrated sound insulation cotton according to claim 1, characterized in that, The top of the rubber sealing body (1) is fixedly connected to a hook part (105), which extends outward from the car window.

5. The automotive window rubber sealing structure with integrated sound insulation cotton according to claim 1, characterized in that, The sound insulation cotton body (2) is made of polypropylene fiber cotton, and the thickness of the sound insulation cotton body (2) ranges from 0.5 to 3 mm.

6. The automotive window rubber sealing structure with integrated sound insulation cotton according to claim 1, characterized in that, The second cavity (102) has a waist-shaped hole structure in cross section, with a short axis dimension range of 1-3mm and a long axis dimension range of 2-5mm.

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