Automobile sunroof sealing rubber strip dustproof and waterproof structure

Abstract

The utility model relates to the technical field of automobile parts, disclose a kind of automobile sunroof sealing rubber strip dustproof waterproof structure, including integrally-formed sealing rubber strip main body, by upper rubber strip, lower rubber strip and the support soft column connected in the distal end of both are jointly enclosed C-shaped groove structure, the inner side wall of upper rubber strip and lower rubber strip is respectively fixedly connected with the waterproof ridge of opposite arrangement, in the body inside of upper rubber strip and lower rubber strip and located the rear of the root of waterproof ridge, fixedly connected with support boss. When sunroof glass is closed, its edge extrudes support soft column, makes support soft column bend and drives upper rubber strip and lower rubber strip to each other close, to actively two waterproof ridges are extruded together, form seamless sealing. The utility model greatly improves the reliability and durability of sealing by initiative linkage sealing mechanism, simple structure, strong durability.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a dustproof and waterproof structure for automotive sunroof sealing strips. Background Technology

[0002] As an important feature for enhancing driving and riding comfort, the sealing performance of a car sunroof is crucial, directly affecting the vehicle's waterproofing, dustproofing, and sound insulation. Currently, car sunroofs generally use sealing strips made of rubber or elastomer materials to achieve a seal. The basic principle is that the compression force generated by the sunroof glass when it is closed causes the sealing strip to elastically deform and fill the gap between the glass and the roof sheet metal.

[0003] This passive compression-based sealing method has inherent limitations in practical applications. The effectiveness of the seal depends entirely on the uniformity and durability of the compression force. However, during long-term vehicle use, the sealing strip gradually loses its original elasticity and undergoes permanent compression deformation due to repeated opening and closing actions, material aging caused by sun and rain exposure, and high and low temperature changes.

[0004] Once the elasticity of the sealing strip diminishes, its rebound force becomes insufficient to completely fill the sealing gaps, especially at corners and edges where pressure is uneven, easily forming tiny gaps that are difficult to detect with the naked eye. These gaps, under conditions such as high-speed driving or high-pressure water washing, become channels for rainwater and dust to enter the vehicle, severely impacting the vehicle's comfort and reliability. Therefore, this invention proposes a dustproof and waterproof structure for automotive sunroof sealing strips to address the shortcomings of existing technologies. Summary of the Invention

[0005] To overcome the above deficiencies, this utility model provides a dustproof and waterproof structure for automotive sunroof sealing strips, aiming to improve the problem that some automotive sunroof sealing strips in the prior art suffer from reduced sealing reliability due to reliance on passive compression and material elasticity decay after long-term use.

[0006] This utility model provides a dustproof and waterproof structure for a car sunroof sealing strip, including an integrally formed sealing strip body; the sealing strip body is composed of an upper strip, a lower strip, and a supporting soft column.

[0007] The sealing strip also integrates waterproof protrusions and support protrusions.

[0008] Furthermore, the upper and lower adhesive strips, supporting flexible pillars, waterproof protrusions, and supporting protrusions are combined in the following way: the upper and lower adhesive strips, along with the supporting flexible pillars connecting their distal ends, together form a C-shaped groove structure; waterproof protrusions are fixedly connected to the inner walls of the upper and lower adhesive strips respectively; and supporting protrusions are fixedly connected inside the bodies of the upper and lower adhesive strips, and at the rear of the root of each waterproof protrusion. This structure allows the pressure exerted by the sunroof glass on the supporting flexible pillars to be converted into active compressive force between the waterproof protrusions, forming a more reliable seal.

[0009] Preferably, the cross-section of the supporting flexible column is an outwardly convex arc shape, which optimizes the contact and force transmission with the sunroof glass.

[0010] Preferably, the waterproof protrusion is a flexible lip structure with a tapered cross-section that extends integrally from the inner sidewall. The structural design facilitates the formation of a high-pressure sealing line during extrusion, thereby improving the sealing effect.

[0011] Preferably, the support protrusion is a reinforcing block embedded in the body material of the upper and lower adhesive strips, used to limit the deformation range of the waterproof protrusion when it is subjected to pressure and bending, and to prevent its structural damage.

[0012] Preferably, the material hardness of the supporting protrusion is greater than that of other parts of the sealing strip body, ensuring the effective realization of the support function.

[0013] Preferably, the material of the supporting protrusion is a flexible polymer material with high hardness, which takes into account both support rigidity and overall flexibility.

[0014] Preferably, the upper adhesive strip, the lower adhesive strip, the supporting soft column, and the waterproof protrusion are integrally formed by co-extrusion, which simplifies the manufacturing process and improves the structural strength.

[0015] Preferably, the supporting flexible column has a hollow cavity inside, which enhances its elastic deformation capability. This utility model has the following beneficial effects: 1. This utility model, by setting up a support soft column that is bent under pressure, links the upper and lower rubber strips to move closer to each other, thereby actively squeezing the waterproof protrusion, solves the problem in the prior art that the sealing strip relies on passive compression force and is prone to poor sealing due to material fatigue after long-term use, and achieves the technical effect of active sealing and highly reliable waterproof and dustproof effect.

[0016] 2. This utility model solves the problem of fatigue fracture caused by repeated pressure and bending of the waterproof strip by setting a support protrusion with higher hardness behind the root of the waterproof strip, thereby achieving the technical effect of enhancing structural stability and significantly extending the service life of the sealing strip.

[0017] 3. This utility model solves the problems of complex structure and difficult assembly of traditional multi-component combined sealing solutions by integrating various functional components into a single molded structure, thereby achieving the technical effects of simplified structure, reduced production costs, and improved product integrity. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a dustproof and waterproof structure for a car sunroof sealing strip proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a dustproof and waterproof sealing strip for an automotive sunroof, as proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Legend: 1. Upper adhesive strip; 2. Lower adhesive strip; 3. Supporting flexible column; 4. Waterproof raised strip; 5. Supporting protrusion. Detailed Implementation

[0020] 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. Example

[0021] Reference Figures 1 to 3 This utility model provides a dustproof and waterproof structure for automotive sunroof sealing strips, which aims to solve the problem that existing sunroof sealing strips rely on passive compression and are prone to deformation after long-term use, resulting in poor sealing and inability to completely prevent dust and rainwater intrusion.

[0022] like Figure 1 and Figure 2 As shown, the dustproof and waterproof structure of the automotive sunroof sealing strip includes an integrally molded sealing strip body, which consists of an upper sealing strip 1, a lower sealing strip 2, and a supporting soft column 3. The upper sealing strip 1 and the lower sealing strip 2 form the basic framework for sealing and installation, while the supporting soft column 3 serves as the driving component for achieving active sealing.

[0023] Reference Figure 2 and Figure 3The sealing strip body has a C-shaped groove structure formed by an upper sealing strip 1, a lower sealing strip 2, and a supporting flexible column 3 connecting the distal ends of the upper sealing strip 1 and the lower sealing strip 2. The upper sealing strip 1 and the lower sealing strip 2 form two opposing arms of the C-shaped groove structure, and the supporting flexible column 3 forms the base connecting the two arms. The outer wall of the supporting flexible column 3 is constructed as a pressure-bearing surface for abutting against the sunroof glass. On the inner walls of the upper sealing strip 1 and the lower sealing strip 2, i.e., on the side facing each other, anti-corrosion... Waterproof protrusion 4 extends along the length of the sealing strip body and protrudes towards the groove space. This layout allows the two waterproof protrusions 4 to press against each other and seal the gap when the skylight glass compresses the support column 3, causing the two arms to come close together. Inside the body of the upper strip 1 and the lower strip 2, a support protrusion 5 is fixedly connected at the rear of the root of each waterproof protrusion 4. The function of the support protrusion 5 is to provide structural support for the waterproof protrusion 4 when it is bent under pressure.

[0024] To create a smooth contact surface with the sunroof glass and optimize stress distribution, the cross-section of the supporting flexible column 3 is an outwardly convex arc. To improve the sealing fit, the waterproof protrusion 4 is a flexible lip structure with a tapered cross-section, extending integrally from the inner wall, with its tip pointing towards the central axis of the C-shaped groove structure, facilitating the generation of greater linear pressure during compression. To make the support effect more effective, the supporting protrusion 5 is a reinforcing block embedded in the body material of the upper rubber strip 1 and the lower rubber strip 2, its position precisely corresponding to the root of the waterproof protrusion 4, used to effectively limit the deformation range of the waterproof protrusion 4 when it is bent under pressure, preventing permanent deformation. Damage is prevented because the material hardness of the support protrusion 5 is greater than that of the upper rubber strip 1, the lower rubber strip 2, the support soft column 3, and the waterproof protrusion 4. This material difference ensures that it can provide effective support. The material of the support protrusion 5 is preferably a flexible polymer material with high hardness, which ensures both support strength and maintains the overall flexibility of the rubber strip. The upper rubber strip 1, the lower rubber strip 2, the support soft column 3, and the waterproof protrusion 4 are integrally formed by co-extrusion process, which simplifies the production process and ensures structural integrity. The support soft column 3 has a hollow cavity inside, which helps to enhance its elasticity and deformation response speed under pressure and bending.

[0025] The implementation principle of this application embodiment is as follows: During the process of closing the sunroof glass and pushing it upward into the sealing position, the edge of the glass first contacts and presses the outer wall pressure surface of the supporting flexible column 3. Due to the flexible structural design of the supporting flexible column 3, it will bend and deform inward. The bending action generates tension through the connection relationship, causing the upper rubber strip 1 and the lower rubber strip 2, which are the arm parts, to move closer to each other; As the distance between the upper sealing strip 1 and the lower sealing strip 2 decreases, the two waterproof protrusions 4, fixed to their inner walls, are forcefully squeezed together. Under this pressure, the flexible lip structure of the two waterproof protrusions 4 fully fills all potential gaps between the glass and the sealing strip body, forming a robust sealing barrier. During this process, the waterproof protrusions 4 bend inwards. At this time, the support protrusion 5 located behind its root provides solid support for the waterproof protrusions 4 due to its high hardness, preventing fatigue fracture caused by excessive bending and ensuring the long-term reliability of the sealing action. Through this pressure-triggered active linkage sealing mechanism, this invention solves the problem of inadequate sealing caused by insufficient passive compression in the prior art.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof and waterproof structure for a car sunroof sealing strip, comprising an integrally formed sealing strip body, wherein the sealing strip body has a C-shaped groove structure formed by an upper strip (1), a lower strip (2) and a supporting soft column (3) connected to the far end of the upper strip (1) and the lower strip (2); The upper adhesive strip (1) and the lower adhesive strip (2) form two opposing arms of the C-shaped groove structure, the supporting soft column (3) forms the base connecting the two arms, and the outer wall of the supporting soft column (3) is configured to abut against the pressure surface of the skylight glass. Its features are, On the inner sidewalls of the upper rubber strip (1) and the lower rubber strip (2), respectively, on the side facing each other, waterproof protrusions (4) are fixedly connected. The waterproof protrusions (4) extend along the length of the sealing strip body and protrude toward the groove space, so that when the skylight glass squeezes the support soft column (3) and causes the arms to come closer together, the two waterproof protrusions (4) can squeeze and cooperate with each other. Inside the body of the upper rubber strip (1) and the lower rubber strip (2), at the rear position of the root of each waterproof protrusion (4), a support protrusion (5) is fixedly connected.

2. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1, characterized in that, The cross-section of the supporting soft column (3) is an outwardly convex arc shape to form a smooth contact surface with the skylight glass.

3. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1, characterized in that, The waterproof protrusion (4) is a flexible lip structure with a tapered cross section that extends integrally from the inner sidewall, with its tip pointing toward the central axis of the C-shaped groove structure.

4. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1, characterized in that, The support protrusion (5) is a reinforcing block embedded in the body material of the upper rubber strip (1) and the lower rubber strip (2), and its position corresponds to the root of the waterproof protrusion (4). It is used to limit the deformation range of the waterproof protrusion (4) when it is bent under pressure.

5. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1 or 4, characterized in that, The material hardness of the support protrusion (5) is greater than that of the upper rubber strip (1), the lower rubber strip (2), the support soft column (3), and the waterproof protrusion (4).

6. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 5, characterized in that, The support protrusion (5) is made of a flexible polymer material with high hardness.

7. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1, characterized in that, The upper adhesive strip (1), the lower adhesive strip (2), the supporting soft column (3), and the waterproof protrusion (4) are integrally formed by co-extrusion process.

8. The dustproof and waterproof structure of the automotive sunroof sealing strip according to claim 1, characterized in that, The supporting soft column (3) has a hollow cavity inside to enhance its elasticity and response speed under pressure and bending.

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