Waterproof sealing strip for automobile door

Abstract

The utility model relates to the field of automobile door waterproof sealing strips, and particularly discloses an automobile door waterproof sealing strip which comprises a sealing strip body, a springback cavity is formed in the sealing strip body, a springback supporting piece is arranged in the springback cavity, and the springback supporting piece abuts against the position between the top end face and the bottom end face of the springback cavity. An anti-aging layer is arranged on the outer surface of the sealing strip body, a first colloid layer is arranged at the bottom of the anti-aging layer, a limiting piece is arranged on the end face of the bottom of the sealing strip body, and the sealing strip body is connected with an automobile door through the first colloid layer and the limiting piece. Under the synergistic effect of the springback cavity and the springback supporting piece, the sealing strip can quickly restore to the original shape after being pressed, and it is ensured that the sealing strip is tightly attached to the edge of the automobile door; due to the arrangement of the anti-aging layer, the service life of the sealing strip can be further prolonged; the first colloid layer and the limiting piece are matched in a chemical and physical mode, so that the sealing strip is firmly fixed to the automobile door, and the stability of the sealing strip is higher.

Description

Technical Field

[0001] This utility model relates to the field of waterproof sealing strips for automobile doors, and in particular to a waterproof sealing strip for automobile doors. Background Technology

[0002] Car door seals are important components installed on the edges of car doors, primarily serving to provide waterproofing, dustproofing, sound insulation, and shock absorption. Door seals are typically made of rubber or elastic plastic materials, achieving a sealing effect through compression and deformation.

[0003] Conventional sealing strips are prone to plastic deformation under long-term pressure or extreme temperature conditions, which can lead to a decrease in resilience and an inability to effectively restore their initial shape. This can result in problems such as doors not closing properly, air leaks, and water leaks. Furthermore, most existing sealing strips are attached with single-sided adhesive, which can easily loosen or fall off when the vehicle vibrates or the temperature changes, resulting in poor stability. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof sealing strip for automobile doors to solve the technical problems of insufficient rebound ability and poor stability of the sealing strips in the prior art.

[0005] To solve the above problems, the present invention provides a waterproof sealing strip for automotive doors, which adopts the following technical solution:

[0006] A waterproof sealing strip for automotive doors includes a sealing strip body, an internal rebound cavity, a rebound support member inside the rebound cavity, the rebound support member abutting between the top and bottom end faces of the rebound cavity, an anti-aging layer on the outer surface of the sealing strip body, a first colloid layer at the bottom of the anti-aging layer, and a limiting member at the bottom end face of the sealing strip body. The sealing strip body is connected to the automotive door through the first colloid layer and the limiting member.

[0007] Furthermore, the outer wall of the limiting member is fitted with a pre-fixing member for pre-fixing inside the car door, and the top of the pre-fixing member is bonded to the bottom of the first adhesive layer.

[0008] Furthermore, the limiting component includes a connecting part and a limiting part. The limiting part has an inverted trapezoidal structure, and the diameter of the top end face of the limiting part is larger than the diameter of the connecting part. The pre-fixing component is set as an annular structure, and the inner wall of the pre-fixing component has a stepped surface. The top end face of the limiting part abuts against the inner wall of the pre-fixing component.

[0009] Furthermore, the limiting component is provided with an exhaust channel, the sealing strip body is provided with an exhaust hole, and the rebound cavity is connected to the exhaust channel through the exhaust hole.

[0010] Furthermore, a reinforcing strip is provided on the top end face of the sealing strip body. The reinforcing strip is arranged in a straight line and has a semi-circular cross-section.

[0011] Furthermore, the spring support is configured as a vertical structure, an X-shaped structure, and / or a continuous wave-shaped distribution.

[0012] Furthermore, the cross-sections at both ends of the sealing strip body are designed as inclined structures, with the inclined direction of the cross-sections being upward along the first colloid layer, and a second colloid layer is provided at both ends of the sealing strip body.

[0013] Furthermore, the anti-aging layer includes a light-absorbing layer, a heat-insulating layer, and a corrosion-resistant layer distributed sequentially from the inside to the outside along the outer wall of the sealing strip body.

[0014] The beneficial effects of the automotive door waterproof sealing strip provided by this utility model are:

[0015] 1. With the synergistic effect of the rebound chamber and the rebound support, the sealing strip can quickly return to its original shape after being compressed, ensuring a tight fit with the edge of the car door, effectively preventing rainwater and dust from entering the car, keeping the car interior environment clean, and extending the service life of the sealing strip.

[0016] 2. The anti-aging layer can resist the erosion of ultraviolet rays, ozone and chemicals, delay the aging and cracking of the sealing strip, maintain the integrity of the waterproof barrier for a long time, and further extend the service life of the sealing strip.

[0017] 3. The first colloidal layer and the limiting component firmly fix the sealing strip to the car door through chemical and physical means, which can effectively prevent it from loosening or falling off when the vehicle vibrates or the temperature changes, making the sealing strip more stable. Attached Figure Description

[0018] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0019] Figure 1 A schematic cross-section of a waterproof sealing strip for automotive doors, as per utility model. Figure 1 ;

[0020] Figure 2 A schematic cross-section of a waterproof sealing strip for automotive doors, as per utility model. Figure 2 ;

[0021] Figure 3This is a schematic diagram of the distribution structure of the anti-aging layer of a waterproof sealing strip for automobile doors, which is a utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Sealing strip body; 11. Rebound cavity; 111. Vent hole; 12. Rebound support; 13. Limiting component; 131. Connecting part; 132. Limiting part; 133. Vent channel; 14. Reinforcing strip; 15. Cross-section; 151. Second colloid layer;

[0024] 2. Anti-aging layer; 21. Light-absorbing layer; 22. Thermal insulation layer; 23. Corrosion-resistant layer;

[0025] 3. First colloidal layer;

[0026] 4. Pre-fixed components. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0029] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0030] This utility model provides a waterproof sealing strip for automotive doors, such as... Figures 1 to 3 As shown, the device includes a sealing strip body 1, a rebound cavity 11 inside the sealing strip body 1, a rebound support 12 inside the rebound cavity 11, the rebound support 12 abutting between the top end face and the bottom end face of the rebound cavity 11, an anti-aging layer 2 on the outer surface of the sealing strip body 1, a first colloid layer 3 at the bottom of the anti-aging layer 2, and a limiting member 13 at the bottom end face of the sealing strip body 1. The sealing strip body 1 is connected to the car door through the first colloid layer 3 and the limiting member 13.

[0031] By adopting the above technical solution, under the synergistic effect of the rebound cavity 11 and the rebound support 12, the sealing strip can quickly return to its original shape after being compressed, ensuring a tight fit with the edge of the car door, effectively preventing rainwater and dust from entering the car, keeping the car interior environment clean, and extending the service life of the sealing strip; the anti-aging layer 2 can resist the erosion of ultraviolet rays, ozone and chemicals, delay the aging and cracking of the sealing strip, maintain the integrity of the waterproof barrier for a long time, and further extend the service life of the sealing strip; the first colloidal layer 3 and the limiting member 13, through the cooperation of chemical and physical methods, firmly fix the sealing strip to the car door, effectively preventing loosening or falling off when the vehicle vibrates or the temperature changes, making the sealing strip more stable.

[0032] In this embodiment, the elastic recovery rate of the rebound support 12 is ≥90% (compliant with ASTM D395 standard). This high elastic recovery rate ensures that the sealing strip is less prone to permanent deformation due to compression during long-term use, guaranteeing a continuous and tight fit with the edge of the car door, maintaining waterproof, dustproof, and soundproof performance. Furthermore, under the impact of frequent opening and closing of the car door, the rebound support 12 can quickly return to its original shape, preventing seal failure.

[0033] In this embodiment, the outer wall of the limiting member 13 is fitted with a pre-fixing member 4 for pre-fixing the 13 inside the car door. The top of the pre-fixing member 4 is bonded to the bottom of the first adhesive layer 3. In use, the pre-fixing member 4 is pre-installed inside the car door, and the limiting member 13 only needs to be inserted vertically to complete the pre-fixation. Furthermore, the first adhesive layer 3 is bonded to the top of the pre-fixing member 4, forming a continuous sealing interface, which can effectively enhance the connection strength between the sealing strip and the car door. In this embodiment, the pre-fixing member 4 can be made of hard plastic or metal, forming a rigid support structure inside the car door to resist long-term opening and closing impacts and vibrations, and prevent the sealing strip from moving due to force.

[0034] In other embodiments, the pre-fixing component 4 can be installed on the car door using various methods such as non-destructive installation (no drilling required) and drilling installation. It should be noted that the pre-fixing component 4 should be fixed near the metal frame or reinforcing rib of the inner panel of the car door (not in a weak area of ​​the sheet metal), utilizing the rigid structure of the car door to provide stable support and prevent the sealing strip from loosening due to long-term vibration.

[0035] In this embodiment, the limiting member 13 includes a connecting part 131 and a limiting part 132. The limiting part 132 has an inverted trapezoidal structure, and the diameter of the top end face of the limiting part 132 is larger than the diameter of the connecting part 131. The pre-fixing member 4 is set as an annular structure, and the inner wall of the pre-fixing member 4 has a stepped surface. The top end face of the limiting part 132 abuts against the inner wall of the pre-fixing member 4 to form vertical locking and lateral limiting, which can further enhance the stability and fixing effect of the sealing strip, effectively prevent the sealing strip from loosening or falling off during use, and ensure the sealing effect of the car door.

[0036] In this embodiment, the limiting member 13 is provided with an exhaust channel 133, and the sealing strip body 1 is provided with an exhaust hole 111. The rebound chamber 11 is interconnected with the exhaust channel 133 through the exhaust hole 111. When the sealing member is compressed, the gas in the compression chamber can be discharged into the car door through the exhaust hole 111 and the exhaust channel 133, and then discharged through the exhaust structure of the car door. This effectively avoids the decrease in rebound performance caused by air retention, thereby ensuring the rebound performance and sealing effect of the sealing strip. In other embodiments, the exhaust channel 133 can be coordinated with the water guide groove, drain hole, etc. of the car door, so that when water enters the rebound chamber 11, it can also be discharged from the exhaust channel 133.

[0037] In this embodiment, a reinforcing strip 14 is provided on the top end face of the sealing strip body 1. The reinforcing strip 14 is arranged in a straight line and has a semi-circular cross-section, which can effectively enhance the structural strength of the top of the sealing strip, improve the stability of the sealing strip, and prevent plastic deformation under long-term pressure or extreme temperature conditions. This solves the problem of reduced resilience of the sealing strip and ensures the sealing effect of the car door. In this embodiment, the height of the reinforcing strip 14 is 1 / 5 to 1 / 3 of the thickness of the sealing strip body 1.

[0038] In this embodiment, the spring support 12 is configured as a vertical structure, an X-shaped structure, and / or a continuously distributed wave shape. The vertical structure provides direct support force, the X-shaped structure reduces stress concentration in one direction and enhances the spring effect, and the wave shape provides continuous spring force. These structural forms can provide effective spring support after the sealing strip is compressed and deformed, ensuring that the sealing strip maintains good spring capability during long-term use. In other embodiments, the spring support 12 can be configured as other shapes to meet different spring requirements of the sealing strip body 1, and the spring support 12 can be configured as one or more evenly distributed in the spring cavity 11.

[0039] like Figure 2As shown, in this embodiment, the cross-sections 15 at both ends of the sealing strip body 1 are designed as inclined structures, with the inclination direction of the cross-sections 15 being upward along the first adhesive layer 3. Furthermore, a second adhesive layer 151 is provided at each of the cross-sections 15 at both ends of the sealing strip body 1. The second adhesive layer 151 provides additional adhesion, effectively preventing the sealing strip from lifting or detaching from the car door during use, ensuring a tight fit between the sealing strip and the edge of the car door, and enhancing waterproofing, dustproofing, and sound insulation.

[0040] In this embodiment, the cross-sections 15 at both ends of the sealing strip body 1 are inclined at an acute angle of 20°-35° to the horizontal plane, the thickness of the second colloid layer 151 is 0.2-0.5mm, and the second colloid layer 151 extends to the junction of the cross-section 15 and the outer surface of the sealing strip body 1 to form a covering sealing edge.

[0041] like Figure 3 As shown, in this embodiment, the anti-aging layer 2 includes a light-absorbing layer 21, a heat-insulating layer 22, and a corrosion-resistant layer 23 distributed sequentially from the inside to the outside along the outer wall of the sealing strip body 1. The light-absorbing layer 21 can reduce the aging effect of light on the sealing strip, the heat-insulating layer 22 can prevent the plastic deformation of the sealing strip due to extreme temperatures, and the corrosion-resistant layer 23 can protect the sealing strip from corrosion. Through the combination of the light-absorbing layer 21, the heat-insulating layer 22, and the corrosion-resistant layer 23, the anti-aging layer 2 can effectively resist the influence of external environmental factors such as light, temperature changes, and corrosion, thereby extending the service life of the sealing strip, maintaining its resilience and initial shape, solving the problem that existing sealing strips are prone to plastic deformation after long-term use, and ensuring the sealing effect and stability of the car door.

[0042] In this embodiment, the light-absorbing layer 21 includes a carbon black composite material, the heat insulation layer 22 is a ceramic microsphere filling layer, the corrosion-resistant layer 23 is a fluororubber layer, and the total thickness of the anti-aging layer 2 is 0.5-1.2 mm.

[0043] The waterproof sealing strip for car doors provided by this utility model comprehensively upgrades the sealing performance, durability, and weather resistance of the sealing strip through structural innovation and material optimization, providing an efficient and reliable waterproof solution for car doors.

[0044] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0045] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A waterproof sealing strip for automobile doors, characterized in that, The device includes a sealing strip body, an internal rebound cavity, a rebound support member inside the rebound cavity, the rebound support member abutting between the top and bottom end faces of the rebound cavity, an anti-aging layer on the outer surface of the sealing strip body, a first colloid layer at the bottom of the anti-aging layer, a limiting member at the bottom end face of the sealing strip body, and the sealing strip body is connected to the car door through the first colloid layer and the limiting member.

2. The automotive door waterproof sealing strip according to claim 1, characterized in that, The outer wall of the limiting member is fitted with a pre-fixing member for pre-fixing inside the car door, and the top of the pre-fixing member is bonded to the bottom of the first adhesive layer.

3. The automotive door waterproof sealing strip according to claim 2, characterized in that, The limiting component includes a connecting part and a limiting part. The limiting part has an inverted trapezoidal structure, and the diameter of the top end face of the limiting part is larger than the diameter of the connecting part. The pre-fixing component is set as an annular structure, and the inner wall of the pre-fixing component has a stepped surface. The top end face of the limiting part abuts against the inner wall of the pre-fixing component.

4. A waterproof sealing strip for automobile doors according to any one of claims 1 to 3, characterized in that, The limiting component is provided with an exhaust channel, and the sealing strip body is provided with an exhaust hole. The rebound chamber is connected to the exhaust channel through the exhaust hole.

5. A waterproof sealing strip for automobile doors according to any one of claims 1 to 3, characterized in that, The top end face of the sealing strip body is provided with a reinforcing strip, which is arranged in a straight line and has a semi-circular cross-section.

6. A waterproof sealing strip for automobile doors according to any one of claims 1 to 3, characterized in that, The spring support is configured as a vertical structure, an X-shaped structure, and / or a continuous wave-shaped distribution.

7. A waterproof sealing strip for automobile doors according to any one of claims 1 to 3, characterized in that, The cross-sections at both ends of the sealing strip body are designed as inclined structures, with the inclined direction of the cross-sections being upward along the first colloid layer, and a second colloid layer is provided at both ends of the sealing strip body.

8. A waterproof sealing strip for automobile doors according to any one of claims 1 to 3, characterized in that, The anti-aging layer includes a light-absorbing layer, a heat-insulating layer, and a corrosion-resistant layer, which are distributed sequentially from the inside to the outside along the outer wall of the sealing strip body.

Images