Automobile sliding door top sealing strip and automobile sliding door

Abstract

The application discloses a kind of automobile sliding door top sealing strips and automobile sliding door, belong to automobile parts technical field, including base body, bubble tube, first lip, second lip and third lip, the base body is long strip structure, the bubble tube is protrudingly arranged on base body, the first lip is arranged at one end of base body, and the first lip is located at the same side of bubble tube of base body, the second lip is arranged at one end of base body, and the second lip is connected with the first lip, and the second lip is located at the back side of the bubble tube, the third lip is arranged at the inner side of second lip, and the third lip, second lip enclose the drainage groove with opening towards automobile sheet metal direction. The application further optimizes the structure of sealing strip, optimizes the design of drainage structure, reduces the risk of water leakage, while improving the appearance and durability.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a top sealing strip for an automotive sliding door and an automotive sliding door. Background Technology

[0002] With the development of the automotive industry, users have placed higher demands on the comfort, safety, and aesthetics of vehicles. In models such as MPVs (Multi-Purpose Vehicles), sliding doors provide convenience for passengers getting in and out, but also pose challenges to the sealing performance of the doors. Existing sliding door sealing systems typically install sealing strips on the side sheet metal door frame, achieving waterproofing, dustproofing, and sound insulation functions through the elastic contact between the sealing strips and the inner door panel.

[0003] Relevant prior art, such as Chinese patent application "An upper sealing strip for a sliding door of an automobile and its installation structure", application publication number: CN109532439A, discloses that the upper sealing strip for a sliding door of an automobile includes a long strip-shaped base for connecting with the door frame, a tube protruding upward from the base for elastic contact with the inner panel of the door, a first lip connected to the base for elastic contact with the door frame, a second lip connected to the base for elastic contact with the inner panel of the door, and a third lip connected to the base for covering the inner edge of the door frame. The first lip is further outward of the door gap than the tube, and the first lip and the tube form a drainage groove with the opening facing outward of the door gap. The second lip is further inward of the door gap than the tube, and the third lip is further inward of the door gap than the tube.

[0004] However, as users' demands for overall vehicle NVH performance, sealing reliability, and aesthetic refinement continue to increase, the aforementioned traditional structure has some shortcomings: Firstly, the sealing strip lacks a corresponding water-guiding structure, resulting in insufficient drainage after rainwater seeps into the door gaps, leading to water accumulation and leakage; secondly, the appearance quality is poor, as the fasteners used in conjunction with the installation are exposed to the user's view, affecting the perceived quality. Therefore, there is an urgent need for a sliding door top sealing solution that can achieve sealing while creating a drainage path and effectively concealing the internal installation structure. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a top sealing strip for a car sliding door and a car sliding door, which further optimizes the structure of the sealing strip, optimizes the drainage structure design, reduces the risk of water leakage, and improves aesthetics and durability.

[0006] The technical solution adopted in this application is as follows: a top sealing strip for a car sliding door, comprising a base, a bubble tube, a first lip, a second lip, and a third lip. The base has an elongated strip structure, and the bubble tube protrudes from the base. The first lip is located at one end of the base, and the first lip and the bubble tube are located on the same side of the base. The second lip is located at one end of the base, and the second lip is connected to the first lip. The second lip is located on the back side of the bubble tube. The third lip is located on the inner side of the second lip. The third lip and the second lip form a drainage groove with an opening facing the car sheet metal.

[0007] Compared with existing technologies, the advantages of this application are as follows: First, by setting a first lip, a second lip, and a bubble tube, a multi-layer sealing structure is formed. This design provides more reliable sealing performance, effectively preventing the intrusion of water, dust, and noise, thereby improving the comfort and safety of the vehicle interior. The multi-layer sealing structure also helps to improve the overall NVH (noise, vibration, and harshness) performance of the vehicle, reducing the transmission of external noise into the vehicle interior through more effective sealing and sound insulation, thus enhancing ride comfort.

[0008] Secondly, the second lip is located on the back side of the bubble tube, which can effectively cover the mounting structure (such as fasteners) of the automotive sheet metal. This design not only improves the aesthetics of the product and avoids the mounting parts being directly exposed to the user's view, but may also reduce the potential impact of the mounting structure on the sealing performance.

[0009] Finally, the drainage channel formed by the third and second lips opens towards the automotive sheet metal. This design helps rainwater and other moisture drain along a predetermined path, reducing moisture buildup in door gaps and thus lowering the risk of leaks and seepage. Because the sealing strip is designed with drainage and moisture prevention in mind, it helps reduce the problem of accelerated aging of the sealing strip material due to prolonged contact with moisture, thereby improving the durability and lifespan of the sealing strip.

[0010] In some embodiments of this application, a plurality of fasteners are installed on the substrate, and the substrate is connected to the automotive sheet metal through the fasteners, and the second lip is bent toward the fastener side.

[0011] The curved shape of the second lip can better conceal the fasteners, effectively preventing the installation structure from being directly exposed to the outside view, thus improving the aesthetics and perceived quality.

[0012] In some embodiments of this application, the projection of the second lip onto the substrate partially overlaps with the projection of the fastener onto the substrate. This is a preferred structural solution of this application.

[0013] The second lip completely covers the fastener in the vertical direction, providing a more thorough concealment effect and further improving the appearance quality.

[0014] In some embodiments of this application, the second lip edge is located on the extension line of the first lip edge, and the third lip edge is located at the corner where the second lip edge bends.

[0015] The second lip forms a continuous extension structure with the first lip, and the third lip naturally forms a drainage groove at the corner, making the water flow path smoother and optimizing the drainage performance of this application.

[0016] In some embodiments of this application, the inner surface of the second lip is provided with a protrusion, which is located close to the substrate.

[0017] The raised structure acts as a shock absorber and buffer. When this application is used with automotive sheet metal, it can abut against the end face of the automotive sheet metal to ensure the accurate installation position of the sealing strip and enhance the sealing stability.

[0018] In some embodiments of this application, an adhesive strip is provided on the inner side of the third lip. The adhesive strip is arranged along the length of the top sealing strip of the car sliding door. The adhesive strip is a circular strip structure and is arranged opposite to the protrusion.

[0019] After installation on the automotive sheet metal, the end face of the sheet metal rests against the protrusion, and the adhesive strip contacts the inner surface of the sheet metal. The base, protrusion, and third lip are arranged opposite each other to form a clamping structure, firmly clamping the end face of the automotive sheet metal within the constructed space, improving the connection stability between the sealing strip and the sheet metal. The round adhesive strip can better adapt to the sheet metal surface, providing uniform sealing pressure and enhancing the sealing effect.

[0020] In some embodiments of this application, the other end of the substrate is provided with a fourth lip and a fifth lip, the fourth lip and the fifth lip being located on both sides of the substrate respectively, and the fourth lip and the fifth lip being connected at a predetermined included angle.

[0021] Two angled lip structures are formed at the other end of the substrate, which can cooperate with the sheet metal structure in the other direction to achieve multi-directional sealing and improve the overall sealing performance.

[0022] In some embodiments of this application, the surface of the substrate is provided with adhesive tape, which is located on the back side of the bubble tube and is positioned near the fourth lip.

[0023] The tape is preferably 3M adhesive. The tape connects the automotive sheet metal to the substrate. The tape also helps to secure the sealing strip, preventing it from shifting or falling off, thus enhancing installation reliability and sealing performance.

[0024] In some embodiments of this application, the substrate is provided with a plurality of mounting through holes, one end of which is connected to the inner cavity of the bubble tube, and the other end of which penetrates the substrate. Each of the plurality of mounting through holes is equipped with a snap fastener for engaging with a snap hole on an automotive sheet metal.

[0025] The through-hole is connected to the inner cavity of the foam tube to prevent the through-hole from forming an independent leakage channel. After the fastener is installed, it is still covered by the foam tube, which improves the waterproof performance.

[0026] A sliding door for automobiles includes an automotive sheet metal frame, a door panel, and a top sealing strip for the sliding door. The substrate is mounted on the automotive sheet metal frame, and a first lip and a bubble tube are in elastic contact with the door panel. This application achieves the synergistic effect of multiple sealing interfaces by mounting the substrate to the automotive sheet metal frame and ensuring that the first lip and the bubble tube are in elastic contact with the door panel. This systematically improves the overall sealing reliability, cushioning performance, and assembly adaptability of the sliding door system.

[0027] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0028] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0029] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a structural diagram of the present application in its assembled state.

[0030] The specific reference numerals in the attached drawings are explained as follows: 1. Base; 2. Bubble tube; 3. First lip; 4. Second lip; 5. Third lip; 6. Fastener; 7. Automotive sheet metal; 8. Protrusion; 9. Adhesive strip; 10. Fourth lip; 11. Fifth lip; 12. Adhesive tape; 13. Mounting through hole; 14. Car door. Detailed Implementation

[0031] The present application will now be described in detail with reference to the accompanying drawings.

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] A top sealing strip for a car sliding door, as described in Embodiment 1 Figure 1As shown, the system includes a substrate 1, a bubble tube 2, a first lip 3, a second lip 4, and a third lip 5. The substrate 1 has an elongated shape, and the bubble tube 2 protrudes from the substrate 1. The first lip 3 is located at one end of the substrate 1, and the first lip 3 and the bubble tube 2 are located on the same side of the substrate 1, forming a multi-layered sealing structure. This design provides more reliable sealing performance, effectively preventing the intrusion of water, dust, and noise, thereby improving the comfort and safety of the vehicle interior. The multi-layered sealing structure also helps improve the overall NVH (noise, vibration, and harshness) performance of the vehicle by reducing external noise entering the vehicle interior through more effective sealing and sound insulation, thus enhancing ride comfort.

[0034] The second lip 4 is located at one end of the base 1 and is connected to the first lip 3. The second lip 4 is located on the back side of the bubble tube 2. The second lip 4 is located on the back side of the bubble tube 2, which can effectively cover the installation structure (such as the fastener 6) of the automotive sheet metal 7. This design not only improves the aesthetics of the product and avoids the installation parts being directly exposed to the user's view, but also may reduce the potential impact of the installation structure on the sealing performance.

[0035] The third lip 5 is located on the inner side of the second lip 4, and the third lip 5 and the second lip 4 form a drainage groove with an opening facing the automotive sheet metal 7. This design helps rainwater and other moisture to drain along a predetermined path, reducing the accumulation of moisture in the gaps of the door 14, thereby reducing the risk of leakage and seepage. Because the sealing strip is designed with drainage and prevention of moisture accumulation in mind, it helps reduce the problem of accelerated aging of the sealing strip material due to long-term contact with moisture, thereby improving the durability and service life of the sealing strip.

[0036] Example 2, as Figure 1 As shown, multiple fasteners 6 are installed on the base 1, and the base 1 is connected to the automotive sheet metal 7 through the fasteners 6. The second lip 4 is bent toward the fastener 6. The bent shape of the second lip 4 can better cover the fasteners 6, effectively preventing the installation structure from being directly exposed to the external view, thus improving the appearance and perceived quality.

[0037] The projection of the second lip 4 onto the base 1 partially overlaps with the projection of the fastener 6 onto the base 1. This is the preferred structural solution of this application. The second lip 4 completely covers the fastener 6 in the vertical direction, providing a more thorough masking effect and further improving the appearance quality.

[0038] The second lip 4 is located on the extension line of the first lip 3, and the third lip 5 is located at the bend of the second lip 4. The second lip 4 and the first lip 3 form a continuous extension structure, and the third lip 5 naturally forms a drainage groove at the corner, making the water flow path smoother and optimizing the drainage performance of this application.

[0039] The inner surface of the second lip 4 is provided with a protrusion 8, which is located close to the base 1. The protrusion 8 structure plays a shock-absorbing and buffering role. When this application is used with the automotive sheet metal 7, it can abut against the end face of the automotive sheet metal 7 to ensure the accurate installation position of the sealing strip and enhance the sealing stability.

[0040] A rubber strip 9 is provided on the inner side of the third lip 5. The rubber strip 9 is arranged along the length of the top sealing strip of the car sliding door and has a circular strip structure. The rubber strip 9 is positioned opposite to the protrusion 8. After installation with the car sheet metal 7, the end face of the car sheet metal 7 abuts against the protrusion 8, and the rubber strip 9 contacts the inner side of the car sheet metal 7. The base 1, the protrusion 8, and the third lip 5 are positioned opposite to form a clamping structure, which firmly clamps the end face of the car sheet metal 7 within the constructed space, improving the connection stability between the sealing strip and the sheet metal. The circular rubber strip 9 can better adapt to the sheet metal surface, providing uniform sealing pressure and enhancing the sealing effect.

[0041] The other end of the substrate 1 is provided with a fourth lip 10 and a fifth lip 11, which are located on both sides of the substrate 1 and connected at a predetermined angle. The two angled lip structures formed at the other end of the substrate 1 can cooperate with sheet metal structures in another direction to achieve multi-directional sealing and improve overall sealing performance.

[0042] Adhesive tape 12 is provided on the surface of the substrate 1, located on the back side of the bubble tube 2, near the fourth lip 10. The adhesive tape 12 is preferably 3M adhesive. The adhesive tape 12 connects the automotive sheet metal 7 to the substrate 1. The adhesive tape 12 helps to fix the sealing strip, preventing displacement or detachment, and enhancing installation reliability and sealing effect.

[0043] The substrate 1 has multiple mounting through holes 13. One end of each mounting through hole 13 is connected to the inner cavity of the foam tube 2, and the other end of each mounting through hole 13 penetrates the substrate 1. Each mounting through hole 13 is equipped with a fastener 6 for engaging with a snap-fit ​​hole on the automotive sheet metal 7. The mounting through holes 13 are connected to the inner cavity of the foam tube 2 to prevent the through holes from forming independent leakage channels. After the fastener 6 is installed, it is still covered by the foam tube 2, thus improving the waterproof performance.

[0044] The rest of the contents of Example 2 are the same as those of Example 1.

[0045] A sliding door for automobiles, embodiment three, such as Figure 2As shown, the system includes an automotive sheet metal 7, a door 14, and a top sealing strip for the sliding door as described in Embodiment 1 or Embodiment 2. The substrate 1 is mounted on the automotive sheet metal 7, and the first lip 3 and the bubble tube 2 are in elastic contact with the door 14. By mounting the substrate 1 on the automotive sheet metal 7 and ensuring that the first lip 3 and the bubble tube 2 are in elastic contact with the door 14, this application achieves the synergistic effect of multiple sealing interfaces, which can systematically improve the overall sealing reliability, buffering performance, and assembly adaptability of the sliding door system.

[0046] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A sealing strip for the top of a sliding door of an automobile, characterized in that, The device includes a base (1), a bubble tube (2), a first lip (3), a second lip (4), and a third lip (5). The base (1) has a long strip structure. The bubble tube (2) protrudes from the base (1). The first lip (3) is located at one end of the base (1) and is on the same side of the base (1) as the bubble tube (2). The second lip (4) is located at one end of the base (1) and is connected to the first lip (3). The second lip (4) is located on the back side of the bubble tube (2). The third lip (5) is located on the inner side of the second lip (4). The third lip (5) and the second lip (4) together form a drainage groove with an opening facing the automotive sheet metal (7).

2. The top sealing strip for a sliding door of an automobile according to claim 1, characterized in that, Multiple fasteners (6) are installed on the base (1). The base (1) is connected to the automotive sheet metal (7) through the fasteners (6). The second lip (4) bends toward the fastener (6).

3. The top sealing strip of an automotive sliding door according to claim 1, characterized in that, The projection of the second lip (4) on the base (1) partially overlaps with the projection of the fastener (6) on the base (1).

4. The top sealing strip of an automotive sliding door according to claim 2, characterized in that, The second lip edge (4) is located on the extension line of the first lip edge (3), and the third lip edge (5) is located at the corner where the second lip edge (4) bends.

5. A top sealing strip for a sliding door of an automobile according to claim 1, characterized in that, The inner side of the second lip (4) is provided with a protrusion (8), which is located close to the base (1).

6. A top sealing strip for a sliding door of an automobile according to claim 5, characterized in that, The inner side of the third lip (5) is provided with a rubber strip (9). The rubber strip (9) is arranged along the length of the top sealing strip of the car sliding door. The rubber strip (9) is a circular strip structure. The rubber strip (9) is arranged opposite to the protrusion (8).

7. A top sealing strip for a sliding door of an automobile according to claim 1, characterized in that, The other end of the substrate (1) is provided with a fourth lip (10) and a fifth lip (11). The fourth lip (10) and the fifth lip (11) are located on both sides of the substrate (1) respectively, and the fourth lip (10) and the fifth lip (11) are connected at a predetermined angle.

8. A top sealing strip for a sliding door of an automobile according to claim 7, characterized in that, The surface of the substrate (1) is provided with tape (12), the tape (12) is located on the back side of the bubble tube (2), and the tape (12) is located near the fourth lip (10).

9. A top sealing strip for a sliding door of an automobile according to claim 1, characterized in that, The base (1) is provided with multiple mounting through holes (13). One end of the mounting through hole (13) is connected to the inner cavity of the bubble tube (2), and the other end of the mounting through hole (13) penetrates the base (1). Each of the multiple mounting through holes (13) is equipped with a fastener (6) for engaging with the card hole on the automotive sheet metal (7).

10. A sliding door for automobiles, characterized in that, Includes automotive sheet metal (7), car door (14), and top sealing strip of automotive sliding door as described in any one of claims 1-9, wherein the base (1) is mounted on automotive sheet metal (7), and the first lip (3) and bubble tube (2) are in elastic contact with the car door (14).

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