A sealing structure for automotive door seams

Abstract

This invention pertains to the automotive door gap sealing structure in the field of automotive door technology. A first gap sealing strip (3) is provided at the lower part of the automotive door (1). The first gap sealing strip (3) is bonded to the inner side of the door stop (5) by an adhesive strip (4). The first gap sealing strip (3) includes a middle skeleton area (6), an upper lip (7), and a lower lip (8). The upper lip (7) has a second interference area b (9), and the lower lip (8) has a first interference area a (10). The door stop (11) of the automotive door (2) extends to the inner side of the lower part of the automotive door (1). This automotive door gap sealing structure improves the sealing performance of the door, prevents water leakage, avoids problems such as wetting the interior and affecting the function of electrical components; prevents dust from entering between the sealing strip and the sheet metal and damaging the paint; improves the overall vehicle sound insulation and airtightness, and enhances the overall vehicle NVH performance.

Description

Technical Field

[0001] This invention belongs to the field of automotive door and top door technology, and more specifically, relates to a door seam sealing structure for automotive door and top doors. Background Technology

[0002] As automobiles are updated and upgraded, the functional requirements are becoming increasingly higher, and the specific usage environments for automobiles are gradually increasing. This has led to the emergence of the top-and-bottom door structure. Unlike the traditional rear door, the top-and-bottom door is divided into a top door and a bottom door. The top door opens upwards, and the bottom door opens downwards, which can make the entire rear open more, making it easier to load and unload goods. At the same time, the bottom door can be opened to allow passengers to sit, which meets the needs of customers in outdoor camping, fishing and other scenarios. Because the rear door is divided into a top door and a bottom door, the sealing requirements between the upper and lower openings are higher. Conventional top-and-bottom door models only have one seal in the middle, which is not waterproof and the door gaps are directly exposed, making it easy for dust to enter.

[0003] Existing technology includes a specification titled "A Door Seam Sealing Structure" with publication number CN206394405U, which relates to the automotive field and specifically to a door seam sealing structure. This door seam sealing structure comprises: a plastic pressure strip, a rubber sealing strip, and a T-shaped fastener; the rubber sealing strip includes: a first blocking portion, a second blocking portion, and a fixing portion, with the first and second blocking portions respectively located at both ends of the fixing portion. The first blocking portion is used to block the door seam, and the second blocking portion is used to seal the edge of the rear door outer panel. An elongated hole is provided on one inner side of the fixing portion; the T-shaped fastener is welded to the rear door outer panel, and the fixing portion is connected to the T-shaped fastener through the elongated hole; the plastic pressure strip is snapped between the rubber sealing strip and the T-shaped fastener, and a through groove is provided on each of the top sides of the plastic pressure strip and the T-shaped fastener. When the plastic retaining strip is inserted into the T-shaped fastener, the through grooves on both sides of the plastic retaining strip can undergo significant deformation, making it easier for the plastic retaining strip to be inserted into the T-shaped fastener, and the plastic retaining strip is not easily squeezed and broken by the T-shaped fastener. However, this technology does not address the technical problems and solutions of this application. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a simple structure for sealing the gaps of automotive doors, which improves the sealing performance of the top and bottom doors, prevents water leakage, avoids wetting the interior and affecting the function of electrical components, prevents dust from entering between the sealing strip and the sheet metal and damaging the paint, improves the sound insulation and air tightness of the whole vehicle, and improves the NVH performance of the whole vehicle.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] This invention relates to a sealing structure for the gap between a top and bottom door of an automobile. The top and bottom door includes a top door and a bottom door. A first gap sealing strip is provided at the lower part of the top door. The first gap sealing strip is adhered to the inner surface of the top door stop by an adhesive strip, or it is secured in a groove inside the top door stop by a clip. The first gap sealing strip includes a middle skeleton area, an upper lip, and a lower lip. A second interference area b is provided on the upper lip, and a first interference area a is provided on the lower lip. The bottom door stop of the bottom door extends to the inner side of the lower part of the top door.

[0007] The aforementioned automotive door gap sealing structure also includes a second gap sealing strip for the door, which includes a bottom door connecting part and a top door sealing part. The bottom door connecting part has a U-shaped cross-section and a snap-fit ​​strip is provided on the inner wall of the bottom door connecting part. The bottom door connecting part is snapped onto the folded part of the automotive bottom door, and the top door sealing part is provided with a third interference area.

[0008] When the car's top and bottom doors are opened, the top door is opened first, followed by the bottom door. When the car's top and bottom doors are closed, the bottom door is closed first, followed by the top door.

[0009] The aforementioned car roof door includes a roof door outer panel, a roof door inner panel, and a roof door decorative panel; the car floor door includes a floor door outer panel, a floor door inner panel, a floor door decorative panel, and a floor door outer decorative panel.

[0010] When the car door is closed, the first interference area a of the lower lip of the first gap sealing strip of the door abuts against the car door, and the interference amount of the first interference area a is ≥0.7mm. The second interference area b of the upper lip abuts against the car door, and the interference amount of the second interference area b is ≥2.0mm.

[0011] When the car door is closed, the door sealing part of the second gap sealing strip of the door abuts against the inner plate of the door, and the interference amount of the third interference area of ​​the door sealing part of the second gap sealing strip of the door is ≥5mm.

[0012] The sealing strip for the first gap of the top and bottom gate is bonded to the inner surface of the top gate stop formed by bending the outer plate of the top gate with an adhesive strip, or the sealing strip for the first gap of the top and bottom gate is fitted into the groove inside the top gate stop formed by bending the outer plate of the top gate with a clip.

[0013] When the car door is closed, the first interference area a of the lower lip abuts against the outer decorative panel of the door, the second interference area b of the upper lip abuts against the inner panel of the door, and the third interference area of ​​the door sealing part of the second gap sealing strip of the door abuts against the inner panel of the door.

[0014] The ground door connection part of the second gap sealing strip of the ground door also includes an upper extension sealing part and a lower extension sealing part. The upper extension sealing part abuts against the ground door decorative panel, and the lower extension sealing part abuts against the ground door inner panel.

[0015] The material of the middle skeleton area of ​​the sealing strip of the first gap of the door is EPDM solid adhesive, and the material of the upper lip and the lower lip is EPDM sponge adhesive.

[0016] The working principle and beneficial effects of the technical solution adopted in this invention are as follows:

[0017] The automotive rear door and rear door sealing structure of this invention features a rear door and rear door that are respectively connected to the vehicle body. When the rear of the vehicle needs to be opened, the rear door flips upwards to open, and the rear door flips downwards to open. When the rear of the vehicle needs to be closed, the rear door is first flipped upwards to close, and then the rear door is flipped downwards to close. A first sealing strip is provided between the rear door and the rear door, and this first sealing strip includes multiple interference areas. When the rear door and the rear door are closed, pressure is applied to these interference areas, causing them to adhere to corresponding parts, achieving a reliable seal between the rear door and the rear door. This effectively meets the vehicle's sealing requirements. A second sealing strip is reliably connected to the rear door via a rear door connecting part, and the rear door connecting part and the rear door sealing part are an integral structure. When the rear door and the rear door are closed, the rear door sealing part reliably adheres to the corresponding position on the inside of the rear door, achieving a reliable seal between the rear door and the rear door. Attached Figure Description

[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0019] Figure 1 This is a schematic diagram of the sealing structure for the automotive top and bottom door seams described in this invention;

[0020] Figure 2 This is a partial structural schematic diagram of the automotive door seam sealing structure described in this invention;

[0021] The labels in the attached diagram are as follows: 1. Car top door; 2. Car bottom door; 3. First gap sealing strip of top and bottom door; 4. Rubber strip; 5. Top door stop; 6. Middle frame area; 7. Upper lip; 8. Lower lip; 9. Second interference area b; 10. First interference area a; 11. Bottom door stop; 12. Second gap sealing strip of top and bottom door; 13. Bottom door connection part; 14. Top door sealing part; 15. Snap-fit ​​strip; 16. Fold-up part; 17. Third interference area; 18. Top door outer panel; 19. Top door inner panel; 20. Top door decorative panel; 21. Bottom door outer panel; 22. Bottom door inner panel; 23. Bottom door decorative panel; 24. Upper extended sealing part; 25. Lower extended sealing part. Detailed Implementation

[0022] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0023] As attached Figure 1 Appendix Figure 2As shown, this invention relates to a sealing structure for the gap between a top and bottom door of an automobile. The top door includes a top door 1 and a bottom door 2. A first gap sealing strip 3 is provided at the lower part of the top door 1. The first gap sealing strip 3 is bonded to the inner surface of the top door stop 5 by an adhesive strip 4, or it is fitted into a groove inside the top door stop 5 by a clip. The first gap sealing strip 3 includes a middle skeleton area 6, an upper lip 7, and a lower lip 8. The upper lip 7 has a second interference area b9, and the lower lip 8 has a first interference area a10. The bottom door stop 11 of the bottom door 2 extends to the inner side of the lower part of the top door 1. This invention addresses the shortcomings of existing technologies by proposing an improved technical solution. In the structural design, a top door 1 and a bottom door 2 are fabricated separately and connected to the vehicle body. The first gap sealing strip 3 of the top and bottom doors is adhered to the top door stop 5 using 3M adhesive tape. This adhesive tape connection is convenient. When the rear of the vehicle needs to be opened, the top door 1 flips upwards to open, and the bottom door 2 flips downwards to open. When the rear of the vehicle needs to be closed, the bottom door 2 is first flipped upwards to close, and then the top door 1 is flipped downwards to close. The first gap sealing strip 3 is located between the bottom door 2 and the top door 1. This first gap sealing strip 3 includes multiple interference areas. When the top door 1 and the bottom door 2 are closed, pressure is applied to these interference areas, reliably adhering to the corresponding parts of the top or bottom door, achieving a reliable seal between the top door 1 and the bottom door 2. This effectively meets the vehicle's sealing requirements without requiring complex components or cumbersome connection methods; only the sealing strip is needed. The automotive door seam sealing structure described in this invention is simple in structure, improves the sealing performance of the door, prevents water leakage, and avoids problems such as wetting the interior and affecting the function of electrical components; it also prevents dust from entering between the sealing strip and the sheet metal and damaging the paint, resulting in better sound insulation and airtightness of the whole vehicle, and improving the overall NVH performance of the vehicle.

[0024] The aforementioned automotive door seam sealing structure also includes a second gap sealing strip 12. The second gap sealing strip 12 includes a bottom door connecting part 13 and a top door sealing part 14. The bottom door connecting part 13 has a U-shaped cross-section, and a snap-fit ​​strip 15 is provided on the inner wall of the bottom door connecting part 13. The bottom door connecting part 13 is snapped onto the folded portion 16 of the automotive bottom door 2. The top door sealing part 14 has a third interference area 17. In this structure, the second gap sealing strip 12 is also provided between the automotive top door and the automotive bottom door. The second gap sealing strip 12 is reliably connected to the automotive bottom door through the bottom door connecting part 13. The bottom door connecting part 13 and the top door sealing part 14 are an integral structure. When the automotive top door and the automotive bottom door are closed, the top door sealing part 14 reliably fits against the corresponding position on the inner side of the automotive top door, achieving a reliable seal between the automotive top door 1 and the automotive bottom door 2.

[0025] When the aforementioned car door is opened, the top door 1 is opened first, followed by the bottom door 2. When the car door is closed, the bottom door 2 is closed first, followed by the top door 1. This structure ensures that the opening and closing of the doors will not interfere with each other, ensuring smooth operation.

[0026] The aforementioned car top door 1 includes a top door outer panel 18, a top door inner panel 19, and a top door decorative panel 20; the car bottom door 2 includes a bottom door outer panel 21, a bottom door inner panel 22, a bottom door decorative panel 23, and a bottom door outer decorative panel 26. In the above structure, both the car top door and the car bottom door include multiple components, and these components are reliably connected. The bottom door stop 11 is located at the position of the bottom door outer decorative panel 26.

[0027] When the car door is closed, the lower lip 8 of the first gap sealing strip 3 abuts against the car door 2, with an interference amount ≥ 2.0 mm. The upper lip 7's second interference area b9 abuts against the car door 1, with an interference amount ≥ 2.0 mm. The first gap sealing strip 3 is adhered to the inner surface of the door stop 5 formed by bending the outer door panel 18 via an adhesive strip 4, or it is secured in a groove within the door stop 5 formed by bending the outer door panel 18 via a clip. With this structure, the first gap sealing strip 3 functions when the car door 1 and car door 2 are closed. The interference amount of the lower lip 8's first interference area a10 is ≥ 0.7 mm, reliably achieving a seal. Furthermore, when the top and bottom doors are closed, they reliably press against the bottom door of the vehicle through the first interference area a, achieving a seal. When the top door is open relative to the bottom door, the lower lip will not flare out. The interference amount of the second interference area b9 of the upper lip 7 is ≥2.0mm, reliably achieving a seal. The upper lip 7 can conceal the gap between the sealing strip and the inner panel of the top door, while also blocking PVC adhesive and primer stains.

[0028] When the car's top and bottom doors are closed, the top door sealing part 14 of the second gap sealing strip 12 abuts against the inner top door panel 19, and the interference amount of the third interference area 17 of the top door sealing part 14 is ≥5.0mm. In this structure, the second gap sealing strip 12 mainly functions when the car's top door 1 and bottom door 2 are closed. The interference amount of the third interference area 17 of the top door sealing part 14, ≥5.0mm, achieves a seal.

[0029] When the car's top and bottom doors are closed, the first interference area a10 of the lower lip 8 abuts against the outer decorative panel 23 of the bottom door 2, the second interference area b9 of the upper lip 7 abuts against the inner panel 19 of the top door 1, and the third interference area 17 of the top door sealing part 14 of the second gap sealing strip 12 abuts against the inner panel 19 of the top door 1. In this structure, the second interference area b9 of the upper lip 7 achieves a seal between itself and the inner panel 19 of the top door 1, preventing rainwater, dust, etc., from entering the car interior. The third interference area 17 of the top door sealing part 14 provides another seal between itself and the inner panel 19 of the top door 1, preventing rainwater, dust, etc., from entering the car interior.

[0030] The second gap sealing strip 12 of the door and gate further includes an upper extending sealing part 24 and a lower extending sealing part 25 at the bottom door connection portion 13. The upper extending sealing part 24 abuts against the top door decorative panel 20, and the lower extending sealing part 25 abuts against the bottom door inner panel 22. In this structure, the upper extending sealing part 24 achieves a seal between itself and the top door decorative panel 20, preventing rainwater, dust, etc., from entering the vehicle interior. The lower extending sealing part 25 achieves a seal between itself and the bottom door inner panel 22, preventing rainwater, dust, etc., from entering the vehicle interior.

[0031] The middle skeleton area 6 of the sealing strip 3 of the first gap of the door is made of EPDM solid adhesive, and the upper lip 7 and lower lip 8 are made of EPDM sponge adhesive.

[0032] The automotive rear door seam sealing structure of this invention comprises a rear door 1 and a rear door 2, which are respectively manufactured and connected to the vehicle body. A first seam sealing strip 3 is attached to the rear door stop 5 using 3M adhesive tape. The tape connection is convenient. When the rear of the vehicle needs to be opened, the rear door 1 flips upwards to open, and the rear door 2 flips downwards to open. When the rear of the vehicle needs to be closed, the rear door 2 is first flipped upwards to close, and then the rear door 1 is flipped downwards to close. The first seam sealing strip 3 is positioned between the rear door 1 and the rear door 2. This first seam sealing strip 3 includes multiple interference areas. When the rear door 1 and the rear door 2 are closed, pressure is applied to these interference areas, reliably adhering to the corresponding parts of the rear door or the rear door, achieving a reliable seal between the rear door 1 and the rear door 2. This effectively meets the vehicle's sealing requirements without requiring complex components or cumbersome connection methods; only a sealing strip is needed. The second interference area b9 of the upper lip 7 achieves a seal between itself and the inner panel 19 of the vehicle's roof door 1, preventing rainwater, dust, etc., from entering the vehicle's interior. The third interference area 17 of the roof door sealing part 14 achieves another seal between itself and the inner panel 19 of the vehicle's roof door 1, preventing rainwater, dust, etc., from entering the vehicle's interior. The second gap sealing strip 12 of the roof door and roof door is reliably connected to the vehicle's ground door through the ground door connecting part 13. The ground door connecting part 13 and the roof door sealing part 14 are an integral structure. When the vehicle's roof door and ground door are closed, the roof door sealing part 14 reliably fits against the corresponding position on the inner side of the vehicle's roof door, achieving a reliable seal between the vehicle's roof door 1 and the vehicle's door 2.

[0033] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A sealing structure for the gap between the top and bottom seams of an automobile door, characterized in that: The car door includes a car door (1) and a car door (2). The lower part of the car door (1) is provided with a first gap sealing strip (3). The first gap sealing strip (3) is bonded to the inner side of the door stop (5) by a rubber strip (4), or the first gap sealing strip (3) is attached to the inner side of the door stop (5) by a clip. The first gap sealing strip (3) includes a middle skeleton area (6), an upper lip (7) and a lower lip (8). The upper lip (7) is provided with a second interference area b (9), and the lower lip (8) is provided with a first interference area a (10). The door stop (11) of the car door (2) extends to the inner side of the lower part of the car door (1). The aforementioned automotive door gap sealing structure also includes a second gap sealing strip (12) for the door and the top door. The second gap sealing strip (12) for the door and the top door includes a bottom door connecting part (13) and a top door sealing part (14). The bottom door connecting part (13) has a U-shaped cross section. A snap-fit ​​strip (15) is provided on the inner wall of the bottom door connecting part (13). The bottom door connecting part (13) is snapped onto the folded part (16) of the automotive bottom door (2). A third interference area (17) is provided in the top door sealing part (14). When the car door is closed, the first interference area a (10) of the lower lip (8) of the first gap sealing strip (3) of the car door abuts against the car door (2); The ground door connecting part (13) and the top door sealing part (14) are an integral structure.

2. The sealing structure for the door seam of an automobile top and bottom door according to claim 1, characterized in that: When the car top door is opened, the car top door (1) is opened first, and then the car bottom door (2) is opened. When the car top door is closed, the car bottom door (2) is closed first, and then the car top door (1) is closed.

3. The sealing structure for the door seam of an automobile top and bottom door according to claim 1 or 2, characterized in that: The aforementioned car top door (1) includes a top door outer panel (18), a top door inner panel (19), and a top door decorative panel (20), and the car bottom door (2) includes a bottom door outer panel (21), a bottom door inner panel (22), a bottom door decorative panel (23), and a bottom door outer decorative panel (26).

4. The sealing structure for the door seam of an automotive top and bottom door according to claim 3, characterized in that: The interference amount of the first interference region a (10) is ≥0.7mm, and the second interference region b (9) of the upper lip (7) abuts against the car roof (1), with the interference amount of the second interference region b (9) being ≥2.0mm.

5. The sealing structure for the door seam of an automotive top and bottom door according to claim 4, characterized in that: When the car door is closed, the door sealing part (14) of the second gap sealing strip (12) of the door abuts against the inner plate (19) of the door, and the interference amount of the third interference area (17) of the door sealing part (14) of the second gap sealing strip (12) of the door is ≥5mm.

6. The sealing structure for the door seam of an automotive top and bottom door according to claim 3, characterized in that: The sealing strip (3) of the first gap of the gate is bonded to the inner side of the gate stop (5) formed by bending the outer plate (18) of the gate by adhesive strip (4), or the sealing strip (3) of the first gap of the gate is installed in the groove inside the gate stop (5) formed by bending the outer plate (18) of the gate by a clip.

7. The sealing structure for the door seam of an automobile top and bottom door according to claim 5, characterized in that: When the car door is closed, the first interference area a (10) of the lower lip (8) abuts against the outer decorative panel (23) of the car door (2), the second interference area b (9) of the upper lip (7) abuts against the inner panel (19) of the car door (1), and the third interference area (17) of the door sealing part (14) of the second gap sealing strip (12) of the car door abuts against the inner panel (19) of the car door (1).

8. The sealing structure for the door seam of an automobile top and bottom door according to claim 3, characterized in that: The bottom door connection part (13) of the second gap sealing strip (12) of the top and bottom door also includes an upper extension sealing part (24) and a lower extension sealing part (25). The upper extension sealing part (24) abuts against the top door decorative panel (20), and the lower extension sealing part (25) abuts against the bottom door inner panel (22).

9. The sealing structure for the door seam of an automotive top and bottom door according to claim 1 or 2, characterized in that: The middle skeleton area (6) of the first gap sealing strip (3) of the door is made of EPDM solid adhesive, and the upper lip (7) and lower lip (8) are made of EPDM sponge adhesive.

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