Automobile door opening seal

Abstract

The application discloses a kind of automobile door hole sealing strips, belong to automobile parts technical field, including installation part and bubble tube part, the cross section of installation part is the U-shaped structure matching automobile door frame, installation part is assembled on automobile door frame, the installation part includes first side, bottom edge and second side connected in sequence, the bubble tube part is located at one side of installation part, bubble tube part is arranged at first side, the cross section of bubble tube part is mushroom type, the bubble tube part includes circular arc part and rectangular part, and exhaust hole is arranged on the rectangular part.The application optimizes the structural design of automobile door hole sealing strip, and hides and arranges exhaust hole, significantly improves the appearance quality and durability of product.

Description

Technical Field

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

[0002] Automotive door opening sealing strips are key components installed on the door openings of car bodies. They are primarily used to fill the gap between the door and the car body when the door is closed, providing functions such as shock absorption, waterproofing, sound insulation, heat insulation, and dust prevention. As car consumers increasingly demand higher overall vehicle quality, the sealing performance and visual appeal of these sealing strips have become crucial factors influencing the driving experience and product competitiveness.

[0003] In existing technologies, automotive door opening sealing strips typically employ a hollow bubble tube structure, achieving a seal by compressing the bubble tube when the door is closed, causing elastic deformation. To ensure that the internal gas can be smoothly discharged when the bubble tube is compressed, and to avoid pressure resistance affecting compression deformation or causing the sealing strip to shift, such structures generally have vent holes on the surface of the bubble tube. Relevant prior art, such as Chinese patent application "A Car Door Sealing Strip", application number: CN202222912173.3, discloses a sealing strip comprising: a sealing strip body; a sealing strip blister tube disposed at the bottom of the sealing strip body, the sealing strip blister tube having a bending and fitting surface on its left side and a matching bending surface on its right side, the sealing strip blister tube having an air cavity groove in its inner cavity, and an air hole on one side of the bending surface; and a car door frame, the sealing strip body being installed on the car door frame, the bending and fitting surface being fitted with the car door. By installing the sealing strip on the edge of the car door, closing the car door, the car door and the bending and fitting surface are fitted together, and the pressure is used to expel the gas in the inner cavity groove from the air hole. Due to the regenerative properties of the rubber, the bending and fitting surface is tightly fitted to the car door, increasing the sealing performance. This prevents rainwater from penetrating the car interior during driving in rainy weather, thus enhancing the driver's driving experience.

[0004] However, the above-mentioned traditional structure has the following technical problems: the exhaust hole is directly exposed on the surface of the sealing strip and can be seen when the door is open. The exposed exhaust hole is prone to accumulating dust and foreign objects, which may cause blockage or cleaning dead corners after long-term use, affecting the exhaust function. At the same time, the presence of the exhaust hole also has a negative impact on the surface texture and visual quality of the sealing strip, making it difficult to meet the high standards of current automotive design for refined and concealed functional structures of exterior parts. Utility Model Content

[0005] The technical problem to be solved by this application is to provide an automotive door opening sealing strip, which significantly improves the appearance quality and durability of the product by optimizing the structural design of the automotive door opening sealing strip and concealing the exhaust hole.

[0006] The technical solution adopted in this application is: a sealing strip for automotive door openings, including an installation part and a foam tube part. The cross-section of the installation part is a U-shaped structure that matches the automotive door frame. The installation part is assembled on the automotive door frame. The installation part includes a first side, a bottom side, and a second side connected in sequence. The foam tube part is located on one side of the installation part and is disposed at the first side. The cross-section of the foam tube part is mushroom-shaped. The foam tube part includes an arc part and a rectangular part. The rectangular part is provided with vent holes.

[0007] Compared with existing technologies, the advantages of this application are as follows: First, this application divides the sealing strip into an installation section and a foam tube section. The U-shaped structure design of the installation section allows it to better match the shape of the car door frame, thereby improving installation stability and sealing effect. The mushroom-shaped cross-section of the foam tube section provides a larger contact area and better elastic deformation capacity, which helps to achieve a tighter seal when the car door is closed.

[0008] Secondly, the vent is located on the rectangular section. This design ensures venting functionality while minimizing its impact on the appearance of the sealing strip. When the door closes and applies pressure to the bubble tube, the bubble tube is compressed and deformed, facilitating the expulsion of internal gas, reducing pressure resistance, and thus improving the sealing performance of the sealing strip. By placing the vent in the rectangular section, the accumulation of dust and foreign matter is reduced, lowering the risk of vent blockage and enhancing the durability and ease of maintenance of the sealing strip. Simultaneously, this design helps to conceal the vent, improving the overall appearance of the sealing strip and meeting the refined requirements of automotive exterior design.

[0009] In some embodiments of this application, the cross-section of the arc portion is generally semi-circular, the arc portion includes an arc side and a planar side, the rectangular portion is connected to the planar side of the arc portion, and the diameter of the arc portion is greater than the width of the rectangular portion.

[0010] The semi-circular arc side distributes force more evenly when in contact with the door, resulting in smoother and more stable deformation; the rectangular section connects to the flat side, facilitating the concealed placement of the exhaust vents. The arc section has a larger diameter than the rectangular section, ensuring that the arc side is the primary deformation area during compression, providing greater elastic buffer space and enhancing the sealing effect.

[0011] In some embodiments of this application, the vent hole penetrates one side wall of the rectangular portion in a direction perpendicular to the wall of the rectangular portion.

[0012] A vertically penetrating vent has the shortest path, resulting in smoother and more efficient venting; it also simplifies processing and manufacturing, making mold design easier. Gas exits directly from the vent, reducing resistance to meandering flow within the sealing strip and preventing pressure buildup that could affect sealing performance.

[0013] In some embodiments of this application, an extended lip is provided at the junction of the first side and the bottom edge, and the extended lip bends toward the side where the bottom edge is located.

[0014] The extended lip forms an additional sealing barrier, improving waterproofing and dustproofing. The design of the extended lip curving towards the bottom edge allows it to fit more tightly against the bottom edge under pressure, enhancing the seal. The extended lip can also create a labyrinthine seal between the doorway and the door frame, extending the path for water seepage.

[0015] In some embodiments of this application, the bottom edge surface is provided with an arc-shaped protrusion, which is located on the side of the bottom plate near the second side edge.

[0016] The curved protrusions provide support and guidance for the deformation of the extended lip, preventing excessive deformation or flipping failure. They also absorb impact energy, reducing wear on the extended lip. Furthermore, the curved protrusions ensure a tight fit between the deformed extended lip and the protrusion, forming a reliable secondary seal.

[0017] In some embodiments of this application, the outer surface of the extended lip is covered with a wear-resistant layer, and the end of the inner surface of the extended lip is provided with an adhesive strip. The adhesive strip is arranged along the length direction of the car door opening sealing strip, and the adhesive strip is a circular strip structure.

[0018] The outer surface of the extended lip is reinforced with a wear-resistant layer to enhance its abrasion resistance and extend its service life. A circular strip is incorporated into the inner surface of the extended lip to provide additional sealing points and improve sealing performance. The circular strip structure allows for more even deformation of the strip under pressure, resulting in a tighter contact with the door frame and a more reliable seal.

[0019] In some embodiments of this application, the arc side of the arc portion is made of material one, the planar side of the arc portion and the connection between the planar side and the arc side are both made of material two, and the mounting part, the extension lip and the adhesive strip are all made of material two.

[0020] The curved side of the arc section uses a different material from other parts, which can optimize the material performance according to functional requirements (the curved side focuses on elastic deformation, while other parts focus on strength or wear resistance); the connection between the flat side and the curved side uses material two to enhance the connection strength and structural reliability between different materials.

[0021] In some embodiments of this application, an extension is provided on the end face of the first side opening side. The extension is provided along the length direction of the first side and has protruding toothed edges. The extension is made of material one.

[0022] The extension and its toothed edges form a snap-fit ​​structure with the car door frame, improving installation stability. The toothed edge design increases friction, preventing the sealing strip from falling off or shifting. The extension uses the same material as the curved side, ensuring sufficient elasticity for easy installation.

[0023] In some embodiments of this application, both Material 1 and Material 2 are elastic materials, and the car door opening sealing strip is integrally formed.

[0024] Both materials are elastic, ensuring consistent overall sealing performance. The one-piece molding process guarantees a strong, seamless connection between components, improving overall strength and sealing performance, while simplifying the production process and reducing manufacturing costs.

[0025] Preferably, the first material is a foam adhesive and the second material is a solid adhesive.

[0026] Expanded foam is used on curved sides and extensions to provide lightweight, high elasticity, and good sound and heat insulation properties; solid adhesive is used in other parts to provide structural strength, abrasion resistance, and support; the two materials complement each other to achieve an optimal balance between performance and cost.

[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. Mounting part; 11. First side; 12. Bottom edge; 13. Second side; 2. Bubble tube part; 21. Arc part; 21a. Arc side; 21b. Flat side; 22. Rectangular part; 3. Door frame; 4. Vent hole; 5. Extended lip; 51. Wear-resistant layer; 6. Arc-shaped protrusion; 7. Rubber strip; 8. Extension; 81. Toothed edge; 9. 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 car door opening sealing strip, embodiment one as follows Figure 1 , Figure 2 As shown: The sealing strip includes an mounting part 1 and a bubble tube part 2. The mounting part 1 has a U-shaped cross-section that matches the shape of the car door frame 3 and is mounted on the car door frame 3. The bubble tube part 2 has a mushroom-shaped cross-section. This application divides the sealing strip into the mounting part 1 and the bubble tube part 2. The U-shaped structure of the mounting part 1 allows it to better match the shape of the car door frame 3, thereby improving installation stability and sealing effect. The mushroom-shaped cross-section of the bubble tube part 2 provides a larger contact area and better elastic deformation capacity, which helps to achieve a tighter seal when the car door 9 is closed.

[0034] The mounting portion 1 includes a first side 11, a bottom side 12, and a second side 13 connected in sequence. The bubble tube portion 2 is located on one side of the mounting portion 1 and is positioned at the first side 11. The bubble tube portion 2 includes an arc portion 21 and a rectangular portion 22. The rectangular portion 22 is provided with vent holes 4. This design can ensure the venting function while reducing the impact of the vent holes 4 on the appearance of the sealing strip. When the car door 9 is closed and acts on the bubble tube portion 2, the bubble tube portion 2 is compressed and deformed, which helps to expel internal gas, reduces air pressure resistance, and thus improves the sealing performance of the sealing strip. By placing the vent holes 4 in the rectangular portion 22, the accumulation of dust and foreign objects can be reduced, lowering the risk of vent hole 4 blockage, thereby enhancing the durability and maintenance convenience of the sealing strip. At the same time, this design helps to hide the vent holes 4, improving the overall appearance quality of the sealing strip and meeting the requirements of refined exterior parts in automotive design.

[0035] Example 2 Figure 1 , Figure 2 As shown: The cross-section of the arc portion 21 is generally semi-circular. The arc portion 21 includes an arc side 21a and a flat side 21b. The rectangular portion 22 is connected to the flat side 21b of the arc portion 21. The diameter of the arc portion 21 is larger than the width of the rectangular portion 22. When the semi-circular arc side 21a contacts the door 9, the force is more even, and the deformation is smoother and more stable. The connection of the rectangular portion 22 to the flat side 21b facilitates the concealed arrangement of the exhaust port 4. The larger diameter of the arc portion 21 ensures that the arc side 21a is the main deformation area during compression, providing a larger elastic buffer space and enhancing the sealing effect.

[0036] The vent 4 penetrates one side wall of the rectangular portion 22 in a direction perpendicular to the wall surface of the rectangular portion 22. The vertically penetrating vent 4 has the shortest path, resulting in smoother and more efficient venting; it also simplifies processing and manufacturing, and facilitates mold design. Gas is discharged directly from the vent 4, reducing resistance to flow within the sealing strip and preventing pressure buildup that could affect sealing performance.

[0037] An extended lip 5 is provided at the junction of the first side edge 11 and the bottom edge 12, and the extended lip 5 bends towards the side where the bottom edge 12 is located. The extended lip 5 can form an additional sealing barrier, improving waterproof and dustproof performance. The design of the extended lip 5 bending towards the bottom edge 12 allows it to fit more tightly with the bottom edge 12 under pressure, enhancing the sealing effect. The extended lip 5 can form a labyrinthine sealing structure between the door opening and the door frame, extending the seepage path.

[0038] The bottom edge 12 has an arc-shaped protrusion 6 on its surface, located on the side of the bottom plate closest to the second side edge 13. The arc-shaped protrusion 6 provides support and guidance for the deformation of the extended lip 5, preventing excessive deformation or flipping failure. The arc-shaped protrusion 6 absorbs impact energy from the lip, reducing wear on the extended lip 5. The arc-shaped protrusion 6 ensures that the extended lip 5, after deformation, fits tightly against the arc-shaped protrusion 6, forming a reliable secondary seal.

[0039] The outer surface of the extended lip 5 is covered with a wear-resistant layer 51, and the inner end of the extended lip 5 is provided with a rubber strip 7. The rubber strip 7 is set along the length of the sealing strip of the car door 9 opening, and the rubber strip 7 has a circular strip structure. The wear-resistant layer 51 added to the outer surface of the extended lip 5 improves wear resistance and extends service life. The circular rubber strip 7 on the inner surface of the extended lip 5 provides additional sealing points and enhances sealing performance. The circular strip structure makes the rubber strip 7 deform more evenly when under pressure, resulting in a tighter contact with the door frame and a more reliable seal.

[0040] The arc-shaped side 21a of the arc portion 21 is made of material one, while the flat side 21b of the arc portion 21, as well as the connection between the flat side 21b and the arc-shaped side 21a, are made of material two. The mounting part 1, the extension lip 5, and the adhesive strip 7 are all made of material two. The use of different materials for the arc-shaped side 21a and other parts allows for optimization of material properties according to functional requirements (the arc-shaped side 21a emphasizes elastic deformation, while other parts prioritize strength or wear resistance). Using material two at the connection between the flat side 21b and the arc-shaped side 21a enhances the connection strength and structural reliability between the different materials.

[0041] An extension member 8 is provided on the end face of the opening side of the first side 11. The extension member 8 is provided along the length direction of the first side 11 and has a protruding toothed edge 81. The extension member 8 is made of material one. The extension member 8 and its toothed edge 81 can form a snap-fit ​​structure with the car door frame 3, improving the installation firmness. The design of the toothed edge 81 increases the friction and prevents the sealing strip from falling off or shifting. The extension member 8 is made of the same material as the arc side 21a, ensuring that the extension member 8 has sufficient elasticity for easy installation.

[0042] Both Material 1 and Material 2 are elastic materials, and the automotive door opening sealing strip is integrally molded. The use of elastic materials in both cases ensures consistent overall sealing performance. The integral molding process guarantees a strong, seamless connection between components, improving overall strength and sealing performance, while simplifying the production process and reducing manufacturing costs.

[0043] Preferably, the first material is expanding foam, and the second material is solid adhesive. The expanding foam is used on the curved side 21a and the extension 8 to provide lightweight, high elasticity, and good sound and heat insulation performance; the solid adhesive is used in other parts to provide structural strength, wear resistance, and support; the two materials complement each other, achieving an optimized balance between performance and cost.

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

[0045] 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 automotive door openings, characterized in that, The device includes an installation part (1) and a bubble tube part (2). The cross-section of the installation part (1) is a U-shaped structure that matches the car door frame (3). The installation part (1) is mounted on the car door frame (3). The installation part (1) includes a first side (11), a bottom side (12), and a second side (13) connected in sequence. The bubble tube part (2) is located on one side of the installation part (1). The bubble tube part (2) is located at the first side (11). The cross-section of the bubble tube part (2) is mushroom-shaped. The bubble tube part (2) includes an arc part (21) and a rectangular part (22). The rectangular part (22) is provided with exhaust holes (4).

2. The automotive door opening sealing strip according to claim 1, characterized in that, The cross-section of the arc portion (21) is semi-circular in shape. The arc portion (21) includes an arc side (21a) and a flat side (21b). The rectangular portion (22) is connected to the flat side (21b) of the arc portion (21). The diameter of the arc portion (21) is greater than the width of the rectangular portion (22).

3. The automotive door opening sealing strip according to claim 1, characterized in that, The vent (4) penetrates one side wall of the rectangular part (22) in a direction perpendicular to the wall of the rectangular part (22).

4. A car door opening sealing strip according to claim 1, characterized in that, An extended lip (5) is provided at the junction of the first side (11) and the bottom side (12), and the extended lip (5) bends toward the side where the bottom side (12) is located.

5. A car door opening sealing strip according to claim 4, characterized in that, The bottom edge (12) surface is provided with an arc-shaped protrusion (6), which is located on the side of the bottom plate near the second side edge (13).

6. A car door opening sealing strip according to claim 4, characterized in that, The outer side of the extended lip (5) is covered with a wear-resistant layer (51), and the end of the inner side of the extended lip (5) is provided with a rubber strip (7). The rubber strip (7) is arranged along the length direction of the sealing strip of the car door (9) opening, and the rubber strip (7) is a round strip structure.

7. A car door opening sealing strip according to claim 6, characterized in that, The arc side (21a) of the arc portion (21) is made of material one, the flat side (21b) of the arc portion (21) and the connection between the flat side (21b) and the arc side (21a) are all made of material two, and the mounting part (1), the extension lip (5) and the adhesive strip (7) are all made of material two.

8. A sealing strip for automotive door openings according to claim 1, characterized in that, An extension (8) is provided on the end face of the opening side of the first side (11). The extension (8) is provided along the length direction of the first side (11) and has a toothed edge (81) protruding out. The extension (8) is made of material one.

9. A sealing strip for automotive door openings according to claim 7 or 8, characterized in that, Both Material 1 and Material 2 are elastic materials, and the car door opening sealing strip is integrally formed.

10. A sealing strip for an automotive door opening according to claim 9, characterized in that, Material 1 is a foaming adhesive, and Material 2 is a solid adhesive.

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