Automobile skylight glass rear edge sealing strip and automobile skylight rear edge structure

Abstract

The utility model belongs to the technical field of automobile sealing, and particularly relates to an automobile skylight glass rear edge sealing strip and an automobile skylight rear edge structure. The automobile skylight glass rear edge sealing strip comprises a clamping groove and a sealing part, the section of the clamping groove is in a C shape, the upper end of the clamping groove is connected with the sealing part, and the section of the sealing part is in a long strip shape. The sealing strip comprising the clamping groove and the sealing part is additionally arranged between the PU rib on the rear edge of the automobile skylight glass and the automobile body above the PU rib, the gap between the PU rib and the automobile body is sealed, and the sealing effect is effectively improved under extreme conditions.

Description

Technical Field

[0001] This utility model belongs to the field of automotive sealing technology, and in particular relates to a sealing strip for the rear edge of automotive sunroof glass and a structure for the rear edge of automotive sunroof. Background Technology

[0002] In the current automotive market, sunroofs are increasingly common, widely used in the roofs of commercial SUVs and sedans. Their glass typically features opening and tilting functions, improving interior light transmission and ensuring airflow, thus enhancing passenger comfort. The body seal between the sunroof glass and the vehicle body plays a crucial role in the system's sealing. Firstly, the body seal reduces noise, providing a better driving experience. Secondly, it is vital for the sunroof system's drainage, preventing excessive water from entering the system and overflowing the flood barrier into dry areas. It also guides water flow, directing it into flooded areas and ensuring timely drainage through the outlets.

[0003] Body sealing strips are usually installed on the frame of the body or sunroof system. For body sealing strips installed on the frame, they are installed on the front drainage channel and guide rail at the front end and the side of the sunroof, respectively, while the rear end is installed on the rear seat.

[0004] Current automotive weatherstripping is only installed between the rear edge of the windshield and the body. This weatherstripping typically consists of hard rubber, soft rubber, and a core wire, extruded into a strip. In some designs, the hard rubber portion may have embedded metal components to increase pull-out force. The soft rubber portion usually consists of two parts: a circular bubble near the glass and another circular bubble near the body. However, if the vehicle is in an extremely tilted position or undergoes extreme acceleration or deceleration during rain, water can be forced through the weatherstripping and enter the vehicle, causing leaks. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a sealing strip for the rear edge of a car sunroof glass and a structure for the rear edge of a car sunroof.

[0006] To achieve the above objectives, the technical solution adopted is:

[0007] One of the purposes of this utility model is to provide a sealing strip for the rear edge of a car sunroof glass, including a groove and a sealing part. The groove has a C-shaped cross-section, and the upper end of the groove is connected to the sealing part. The sealing part has a long strip cross-section.

[0008] Furthermore, the card slot has an opening, and a limiting protrusion is provided at the lower end of the opening.

[0009] Furthermore, a raised rib is provided at the upper end of the opening of the slot.

[0010] Furthermore, a weakening line is provided at the connection between the sealing part and the slot.

[0011] Furthermore, the weakening line is located on the side closer to the sunroof glass.

[0012] Furthermore, the sealing part is made of soft rubber, the slot is made of hard rubber, and a core wire is embedded in the slot.

[0013] The hard rubber is formed by melting and extruding ethylene propylene diene monomer (EPDM) rubber to create the groove. The soft rubber is formed by adding a foaming agent during the melting and extrusion process of EPDM, resulting in a sealed area containing air bubbles. The difference between the soft and hard rubbers arises from the different air bubble densities within the EPDM during the molding process. More air bubbles result in a softer EPDM after molding, hence the name soft rubber; fewer air bubbles result in a harder EPDM after molding, hence the name hard rubber.

[0014] Furthermore, the core wire is made of glass fiber.

[0015] The second objective of this utility model is to provide a rear edge structure for an automobile sunroof, including a PU rib and a rear edge sealing strip for the automobile sunroof glass. The sunroof glass is mounted on the PU rib, and a first sealing strip is provided between the sunroof glass and the rear edge of the sunroof glass on the vehicle body. The free end of the PU rib away from the sunroof glass extends to the lower part of the rear edge of the sunroof glass on the vehicle body, and the free end is connected to the slot. The upper end of the sealing part is connected to the rear edge of the sunroof glass on the vehicle body.

[0016] Furthermore, the PU rib has a groove-shaped cross-section, which can be a wavy stepped groove-shaped structure to form a water tank, which is located below the first sealing strip.

[0017] Furthermore, the free end of the PU rib is engaged in the slot through the C-shaped opening of the slot, and the upper end of the sealing part is interference-fitted with the vehicle body and deformed along the weakening line.

[0018] Furthermore, the upper end of the PU reinforcing strip is located between the first sealing strip and the sunroof glass.

[0019] Furthermore, the free end of the PU rib is adapted to the structure of the slot.

[0020] Furthermore, the free end of the PU rib is shaped like a hammerhead.

[0021] Furthermore, the end cross-section of the PU rib is a right-angled trapezoid.

[0022] Compared with existing technologies, the advantages of this utility model are as follows: The sealing strip of this utility model adopts a C-shaped snap-fit ​​structure and is designed with a limiting protrusion. This sealing strip can be well snapped onto the relatively soft glass PU rib and has good process feasibility. A sealing strip including a groove and a sealing part is added between the PU rib at the rear edge of the car sunroof glass and the car body above it, sealing the gap between the PU rib and the car body, effectively improving the sealing effect in extreme cases. The sealing strip adopts a long strip flange structure to match the car body, with a small cross-section, saving space, lower cost, and wide applicability. In addition, the sealing strip has a good sealing effect, providing good sound insulation and noise reduction, as well as water prevention and drainage functions. At the same time, the sealing strip has strong tensile strength, is not easily deformed, and has a good appearance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the rear edge sealing strip of the automotive sunroof glass according to this utility model;

[0024] Figure 2 This is a schematic diagram of the rear edge structure of the automotive sunroof according to this utility model;

[0025] Figure 3 This is a cross-sectional view of the rear edge structure and dry area of ​​the curtain fabric of an existing automotive sunroof.

[0026] Figure 4 This is a cross-sectional view of the rear edge structure of the car sunroof and the dry area of ​​the curtain fabric at an inclined angle of 17 degrees.

[0027] 1. Card slot; 2. Sealing part; 3. PU rib; 4. Core wire; 5. Limiting boss; 6. Raised rib; 7. Weakening line; 8. Body; 9. First sealing strip; 10. Sunroof glass; 11. Water tank; 12. Dry area of ​​curtain fabric. Detailed Implementation

[0028] The present invention will be described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Reference Figure 1 A sealing strip for the rear edge of a car sunroof glass includes a groove 1 and a sealing part 2. The groove 1 has a C-shaped cross-section, and the upper end of the groove 1 is connected to the sealing part 2. The sealing part 2 has a long strip cross-section.

[0032] In a preferred embodiment, the rear edge sealing strip of the sunroof glass is located below the vehicle body 8 at the rear edge of the sunroof glass 10.

[0033] Reference Figure 2 This utility model also provides a rear edge structure for a car sunroof, including a PU rib 3 and the aforementioned rear edge sealing strip for the car sunroof glass. A sunroof glass 10 is installed on the PU rib 3. A first sealing strip 9 is provided between the sunroof glass 10 and the rear edge of the car body 8. The free end of the PU rib 3 away from the sunroof glass 10 extends to the lower part of the rear edge of the car body 8. The free end 10 is connected to the slot 1. The upper end of the sealing part 2 is connected to the rear edge of the car body 8.

[0034] In a preferred embodiment, the PU rib 3 includes a stepped groove structure with a wavy cross-section to form a water tank 11. The water tank 11 is located below the first sealing strip 9. The wavy structure helps to maximize the volume of the water tank in a small space.

[0035] In an optional embodiment, a weakening line 7 is provided at the connection between the sealing part 2 and the slot 1. The main purpose of the weakening line 7 is to guide the sealing strip of this utility model to tilt laterally in a specified direction, so as to avoid inconsistent tilting direction of the sealing strip during installation.

[0036] In this embodiment, the weakening line 7 is located on the side closer to the sunroof glass 10. The weakening line 7 is located on the side closer to the sunroof glass 10 mainly because it is tilted to this side, which allows more water to accumulate and prevents it from flowing into the vehicle when water accumulates or the vehicle shakes.

[0037] In an optional embodiment, the slot 1 has an opening, and a limiting boss 5 is provided at the lower end of the opening to limit the PU rib 3.

[0038] In a preferred embodiment, the free end of the PU rib 3 is engaged in the slot 1 through the C-shaped opening of the slot 1, and the upper end of the sealing part 2 is interference-fitted with the body 8 and deformed along the weakening line 7.

[0039] In this embodiment, the upper end of the PU reinforcing strip 3 is located between the first sealing strip 9 and the sunroof glass 10.

[0040] In a preferred embodiment, the free end of the PU reinforcing strip 3 is adapted to the structure of the slot 1. In this embodiment, the free end of the PU reinforcing strip 3 is hammer-shaped. The hammer-shaped design provides a large pull-out force for the sealing strip of this invention, but the insertion force during installation is not too large.

[0041] In this embodiment, the material of the slot 1 is hard plastic, and the core wire 4 is embedded in the slot 1. The hard plastic material helps to improve the connection strength between the slot 1 and the PU rib 3, and enhances the firmness; the core wire 4 passes through the hard plastic to prevent the sealing strip from being stretched and deformed.

[0042] In a preferred embodiment, the core wire 4 is made of glass fiber.

[0043] In an optional embodiment, a raised rib 6 is provided at the upper end of the opening of the slot 1. The raised rib 6 provides guidance and support during the installation of the sealing strip, facilitating manual installation. Furthermore, the raised rib 6 can serve as a water-blocking seal, preventing water from flowing into the slot 1 from the gap between the slot 1 and the PU rib 3.

[0044] In an optional embodiment, the sealing part 2 is made of soft rubber. The soft rubber material of the sealing part 2 facilitates an interference fit with the vehicle body 8.

[0045] In an optional embodiment, the end section of the PU rib 3 is a right-angled trapezoid. This facilitates installation within the slot 1 and makes it difficult to remove.

[0046] like Figure 3 As shown, the existing technology only sets a first sealing strip 9 between the rear edge of the sunroof glass 10 and the body 8. However, for example, when it rains, rainwater can enter the lower water channel 11 through the gap between the first sealing strip 9 and the rear edge of the sunroof glass 10 or the body 8. Under normal circumstances, the water in the water channel 11 will enter the drainage area and be discharged outside the vehicle, and will not enter the vehicle through the gap between the PU rib 3 and the body 8 behind it. However, in extreme cases, such as when the car is going uphill in heavy rain and experiencing severe bumps, the body 8 will tilt clockwise at a certain angle. At this time, the water in the water channel 11 may enter the vehicle through the gap between the PU rib 3 and the body 8, for example, by entering the vehicle through the lower curtain dry area 12. Figure 4As shown, this utility model adds a sealing strip including a slot 1 and a sealing part 2 between the PU rib 3 at the rear edge of the car sunroof glass 10 and the car body 8 above it, sealing the gap between the PU rib 3 and the car body 8, so that even if the car experiences the above-mentioned extreme situation, water will not enter the car through the gap between the PU rib 3 and the car body 8.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing strip for the rear edge of a car sunroof glass, characterized in that, It includes a slot and a sealing part. The slot has a C-shaped cross-section and its upper end is connected to the sealing part. The sealing part has a long strip cross-section. The slot has an opening and a limiting boss at the lower end of the opening.

2. The sealing strip along the rear edge of the automotive sunroof glass according to claim 1, characterized in that, The upper end of the opening of the slot is provided with a raised rib.

3. The sealing strip along the rear edge of the automotive sunroof glass according to claim 2, characterized in that, A weakening line is provided at the connection between the sealing part and the slot.

4. The sealing strip along the rear edge of the automotive sunroof glass according to claim 2, characterized in that, The sealing part is made of soft rubber, the slot is made of hard rubber, and a core wire is embedded in the slot.

5. A rear edge structure for an automobile sunroof, characterized in that, The invention includes a PU reinforcing strip and a sealing strip for the rear edge of a sunroof glass as described in any one of claims 1 to 4. The sunroof glass is mounted on the PU reinforcing strip, and a first sealing strip is provided between the sunroof glass and the rear edge of the sunroof glass on the vehicle body. The free end of the PU reinforcing strip away from the sunroof glass extends to the lower part of the rear edge of the sunroof glass on the vehicle body, and the free end is connected to the slot. The upper end of the sealing part is connected to the rear edge of the sunroof glass on the vehicle body.

6. The rear edge structure of the automotive sunroof according to claim 5, characterized in that, The PU reinforcing strip has a groove-shaped cross-section to form a water tank, which is located below the first sealing strip.

7. The rear edge structure of the automotive sunroof according to claim 5, characterized in that, The free end of the PU rib is engaged in the slot through the C-shaped opening of the slot, and the upper end of the sealing part is interference-fitted with the vehicle body and deforms along the weakening line.

8. The rear edge structure of the automotive sunroof according to claim 6, characterized in that, The upper end of the PU reinforcing strip is located between the first sealing strip and the sunroof glass.

9. The rear edge structure of a car sunroof according to any one of claims 5 to 8, characterized in that, The free end of the PU rib is shaped like a hammerhead.

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