A waterproof and breathable membrane assembly for vehicle lights

Abstract

The utility model discloses a waterproof and breathable membrane assembly for car light, include: cap body, the bottom of cap body both sides is equipped with the inwardly inclined flow guide surface, and the flow guide surface is equipped with first flow guide hole, and the both sides of cap body inside top are equipped with second flow guide hole, and first flow guide hole is connected with second flow guide hole, set up in the annular mounting plate of cap body inside four quarters, and the annular mounting plate is the grid open web plate, the annular mounting plate is located below second flow guide hole, and the top of annular mounting plate is equipped with the annular stop portion that extends inwards, set up in the hollow sealing ring of annular mounting plate bottom, and the hollow sealing ring is equipped with breathable membrane in. The utility model passes through the unique flow guide surface and flow guide hole design, can effectively guide and discharge the liquid that splashes into, prevents its wet and drenches breathable membrane, and the grid open web plate ensures the air circulation while supporting the breathable membrane, and the annular stop portion limits the installation depth. The compact structure of the assembly, waterproof and breathable performance reliable, installation stable, has improved car light protection level and service life significantly.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, specifically, it relates to a waterproof and breathable membrane assembly for automotive lights. Background Technology

[0002] As a critical lighting component of automobiles, the operational stability of headlights directly impacts driving safety. During operation, the internal temperature of headlights fluctuates rapidly, creating pressure differences that allow humid air to seep in. The sealed structure prevents moisture from escaping, leading to problems such as fogging of the lens and corrosion of internal components. In severe cases, this can cause short circuits and lighting failure. Therefore, waterproof and breathable membrane components have become a core component for ensuring headlight performance, and market demand is steadily increasing.

[0003] Existing components suffer from numerous defects: adhesive-backed membranes are susceptible to failure due to high and low temperatures and UV aging; welded installations are inconvenient and offer poor protection, with most failing the IPX9K high-pressure, high-temperature waterproof test. Furthermore, some products have poorly designed airflow channels, leading to water accumulation and blockage of ventilation channels; insufficient support from the mesh mounting plate results in membrane damage. These components fail to balance waterproofing, breathability, and structural stability, making them unsuitable for the higher precision protection requirements of new energy vehicle headlights. Therefore, there is an urgent need to develop a reliable, highly protective, and waterproof breathable membrane component. Utility Model Content

[0004] In view of this, the technical problem to be solved by this utility model is to provide a waterproof and breathable membrane component for vehicle lights, which solves the problems of vehicle light breathable components being easily impacted by water flow, poor drainage, and unstable installation of the breathable membrane. Through the flow guiding structure and layered design, it achieves efficient waterproofing, rapid drainage and reliable ventilation, and extends the service life of vehicle lights.

[0005] To solve the above-mentioned technical problems, this utility model discloses a waterproof and breathable membrane assembly for vehicle lights, comprising: a cap body, with inwardly inclined guide surfaces on both sides of the bottom of the cap body, the guide surfaces having first guide holes, and second guide holes on both sides of the top of the cap body, the first guide holes communicating with the second guide holes; an annular mounting plate disposed around the cap body, the annular mounting plate being a mesh perforated plate; the annular mounting plate being located below the second guide holes, the top of the annular mounting plate having an inwardly extending annular stop portion; and a hollow sealing ring disposed at the bottom of the annular mounting plate, the hollow sealing ring containing a breathable membrane.

[0006] According to one embodiment of the present invention, the breathable membrane is a polytetrafluoroethylene membrane.

[0007] According to one embodiment of the present invention, the bottom of the hollow sealing ring is provided with an annular sealing rubber ring.

[0008] According to one embodiment of the present invention, the annular mounting plate and the cap body are fixedly connected by ultrasonic welding.

[0009] According to one embodiment of the present invention, the inclination angle between the above-mentioned guide surface and the horizontal plane is 30° to 60°.

[0010] Compared with the prior art, the present invention can achieve the following technical effects: 1) Through its unique guide surface and guide hole design, it effectively guides and discharges splashed liquid, preventing it from wetting the breathable membrane; the mesh perforated plate supports the breathable membrane while ensuring airflow; and the annular stop restricts the installation depth. This component has a compact structure, reliable waterproof and breathable performance, and stable installation, significantly improving the protection level and service life of vehicle lights.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the above technical effects at the same time. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a waterproof and breathable membrane assembly for vehicle lights according to an embodiment of this utility model.

[0013] Attached Figure Labels

[0014] The cap body 10, the flow guiding surface 20, the first flow guiding hole 21, the second flow guiding hole 30, the annular mounting plate 40, the annular stop part 50, the hollow sealing ring 60, and the breathable membrane 70. Detailed Implementation

[0015] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0016] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a waterproof and breathable membrane 70 assembly for vehicle lights according to an embodiment of the present invention. As shown in the figure, a waterproof and breathable membrane 70 assembly for vehicle lights includes: a cap body 10, with inwardly inclined guide surfaces 20 on both sides of the bottom of the cap body 10, the guide surfaces 20 having first guide holes 21, and second guide holes 30 on both sides of the top inside the cap body 10, the first guide holes 21 communicating with the second guide holes 30, and the inclination angle formed by the guide surfaces 20 and the horizontal plane being 30° to 60°.

[0017] In one embodiment of this utility model, the component includes a cap body 10. The bottom sides of the cap body 10 are provided with inwardly inclined guide surfaces 20, each with a first guide hole 21. The top sides of the cap body 10 are provided with second guide holes 30. The first guide holes 21 and the second guide holes 30 are interconnected, and the angle of inclination between the guide surface 20 and the horizontal plane is 30° to 60°. Through the optimized inclined guide surface 20 and its angle, external water flow can be effectively guided down the guide surface 20, preventing water from directly seeping into the interior of the cap body 10. Simultaneously, the connection between the first guide hole 21 and the second guide hole 30 forms an air circulation channel, ensuring pressure balance and breathability inside the vehicle lamp, preventing moisture accumulation, and thus ensuring the long-term stable operation of the waterproof and breathable membrane 70 and the service life of the vehicle lamp.

[0018] Furthermore, an annular mounting plate 40 is provided around the inside of the cap body 10. The annular mounting plate 40 is a mesh perforated plate. The annular mounting plate 40 is located below the second guide hole 30, and the top of the annular mounting plate 40 is provided with an inwardly extending annular stop portion 50.

[0019] In detail, an integrally formed annular mounting plate 40 is provided around the inner wall of the cap body 10. The annular mounting plate 40 is fixedly connected to the cap body 10 by ultrasonic welding. The annular mounting plate 40 adopts a mesh hollow structure and is located below the second guide hole 30. On the top of the annular mounting plate 40, an annular stop part 50 extending horizontally inward is provided along its circumference. Upgrading the original mounting plates on both sides to a complete annular structure around the entire perimeter: This design allows the entire mounting plate and the stop part to form a 360-degree fully enclosed mounting chamber, which can more evenly and stably support and compress the entire edge of the waterproof and breathable membrane 70, completely eliminating lateral leakage points that may exist on both sides, and greatly improving the sealing reliability. At the same time, its mesh hollow characteristics, while achieving full circumferential support, still ensure that air can pass smoothly through the second guide hole 30 and the membrane, achieving pressure balance and breathability, thereby providing all-round, dead-angle-free positioning and protection for the waterproof and breathable membrane 70 under complex working conditions.

[0020] Furthermore, a hollow sealing ring 60 is provided at the bottom of the annular mounting plate 40. The bottom of the hollow sealing ring 60 is provided with an annular sealing rubber ring. A breathable membrane 70 is provided inside the hollow sealing ring 60. The breathable membrane 70 is a polytetrafluoroethylene membrane.

[0021] In detail, the hollow sealing ring 60 serves as the main frame, providing a reliable installation base for the breathable membrane 70. The annular sealing ring at its bottom can undergo elastic deformation when assembled with the headlight housing, achieving a tight static seal and effectively preventing the intrusion of external liquid water. The use of a polytetrafluoroethylene membrane with a microporous structure cleverly utilizes its excellent waterproof and breathable properties, allowing air molecules to pass freely to balance the pressure and temperature inside and outside the headlight, while also blocking liquid water, water vapor, and dust due to its extremely small pore surface tension effect, thus comprehensively ensuring the stability and cleanliness of the headlight's internal environment.

[0022] In summary, this utility model, through its unique guide surface 20 and guide hole design, effectively guides and discharges splashed liquid, preventing it from wetting the breathable membrane 70; the mesh perforated plate supports the breathable membrane 70 while ensuring air circulation; and the annular stop portion 50 limits the installation depth. This component has a compact structure, reliable waterproof and breathable performance, and stable installation, significantly improving the protection level and service life of vehicle lights.

[0023] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A waterproof and breathable membrane assembly for automotive lights, characterized in that, include: The cap body has inwardly inclined guide surfaces on both sides of the bottom, each guide surface having a first guide hole, and second guide holes on both sides of the top of the cap body, wherein the first guide hole and the second guide hole are connected. An annular mounting plate is disposed around the perimeter of the cap body. The annular mounting plate is a mesh perforated plate. The annular mounting plate is located below the second guide hole. The top of the annular mounting plate is provided with an inwardly extending annular stop portion. A hollow sealing ring is disposed at the bottom of the annular mounting plate, and a breathable membrane is provided inside the hollow sealing ring.

2. The waterproof and breathable membrane assembly for automotive lights according to claim 1, characterized in that, The breathable membrane is a polytetrafluoroethylene membrane.

3. The waterproof and breathable membrane assembly for automotive lights according to claim 1, characterized in that, The bottom of the hollow sealing ring is provided with an annular sealing rubber ring.

4. The waterproof and breathable membrane assembly for automotive lights according to claim 1, characterized in that, The annular mounting plate is fixedly connected to the cap body by ultrasonic welding.

5. The waterproof and breathable membrane assembly for automotive lights according to claim 1, characterized in that, The angle of inclination between the guide surface and the horizontal plane is 30° to 60°.

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