Automobile skylight sealing structure

Abstract

The utility model relates to an automobile sunroof sealing structure, sunroof glass, a PU wrapping edge, a sealing strip and an automobile body, the PU wrapping edge annularly wraps the periphery of the sunroof glass, the periphery of the PU wrapping edge is connected with the sealing strip in a clamping mode, the PU wrapping edge is provided with an installation clamping groove corresponding to the sealing strip, the sealing strip is provided with an installation clamping block corresponding to the installation clamping groove, and the PU wrapping edge is connected with the sealing strip in a clamping mode. Limiting protruding blocks are arranged in the installation clamping groove at intervals, the sealing strip is in butt joint end to end to form a ring shape, a butt joint seam of the sealing strip is located between the two limiting protruding blocks, the sealing strip is provided with limiting notches corresponding to the limiting protruding blocks, and the limiting notches are formed in the length direction of the installation clamping block. On the basis that the PU covered edge is connected with the sealing strip in a clamping mode, the limiting notches are formed in the two sides of the butt joint seam of the sealing strip, and the limiting protruding blocks are arranged in the installation clamping grooves corresponding to the PU covered edge, so that the sealing strip is convenient to position and install.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a sealing structure for an automotive sunroof. Background Technology

[0002] With the rapid development of society and the widespread use of automobiles, consumers' demands for car appearance and design are constantly increasing. Therefore, car features also need to be upgraded accordingly. Sunroofs, as a feature that can increase lighting area and improve appearance, are widely adopted by many automakers. The outer ring of the sunroof is equipped with a sealing strip that forms a seal with the car body. Existing sealing strips are vulcanized and bonded into a closed ring covering the sunroof surface. This assembly structure causes stress at the joint of the sealing strip, which eventually cracks after durability, causing the sealing strip to detach, leading to sealing failure and abnormal noises. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a sealing structure for automotive sunroofs. Based on the snap-fit ​​connection between the PU edging and the sealing strip, limiting notches are set on both sides of the joint of the sealing strip, and limiting protrusions are set in the mounting groove corresponding to the PU edging, facilitating the positioning and installation of the sealing strip. The two ends of the annular sealing strip are bonded by vulcanization, or they can be in contact but not bonded. When the two ends of the sealing strip are vulcanized and bonded into a closed ring, the tension at the joint is reduced due to the stretching of the entire sealing strip after installation, preventing cracking at the joint after durability. When the two ends of the sealing strip are only in contact but not bonded, the length of the sealing strip is controlled, and the movement of the mounting blocks in the length direction within the mounting groove is prevented, ensuring the sealing effect of the sealing strip.

[0004] The purpose of this utility model is achieved as follows:

[0005] A sealing structure for an automotive sunroof includes a sunroof glass, a PU edging, a sealing strip, and a car body. The PU edging is annularly wrapped around the periphery of the sunroof glass. The sealing strip is snapped into place around the periphery of the PU edging. The PU edging has a mounting groove corresponding to the sealing strip. The sealing strip has a mounting block corresponding to the mounting groove. Limiting protrusions are spaced apart within the mounting groove. The sealing strip is joined end to end to form an annular shape. The joint of the sealing strip is located between two limiting protrusions. The sealing strip has a limiting notch corresponding to the limiting protrusions. The limiting notch is located along the length direction of the mounting block.

[0006] Preferably, the mounting block has a compression deformation cavity, and the bottom of the limiting notch is flush with the inner end face of the compression deformation cavity.

[0007] Preferably, the mounting slot has a U-shaped cross-section, and the U-shaped opening of the mounting slot is provided with a retaining edge, and the mounting block is provided with a barb corresponding to the retaining edge.

[0008] Preferably, the limiting notches are symmetrically arranged on both sides of the butt joint, and the mounting blocks between the two limiting notches and the mounting grooves between the two limiting protrusions are interference-fitted in the length direction.

[0009] Preferably, the length between the two limiting notches is greater than the length between the two limiting protrusions.

[0010] Preferably, the sealing strip is provided with a compression tube on the side corresponding to the vehicle body, and the compression tube abuts against the vehicle body.

[0011] Preferably, the mounting block is further embedded with a core material along the length of the sealing strip, the core material being copper wire or glass fiber material.

[0012] Preferably, the mounting block, the compression tube, and the core material are integrally extruded, the mounting block is made of EPDM hard rubber material, and the compression tube is made of EPDM soft rubber material.

[0013] Preferably, the two ends of the annular sealing strip are bonded together by vulcanization.

[0014] Preferably, the two ends of the annular sealing strip only make contact but do not stick together.

[0015] The beneficial effects of this utility model are:

[0016] Based on the snap-fit ​​connection between the PU edging and the sealing strip, limiting notches are set on both sides of the joint of the sealing strip, and limiting protrusions are set in the corresponding mounting groove of the PU edging to facilitate the positioning and installation of the sealing strip. The two ends of the annular sealing strip are bonded by vulcanization, or they can be in contact but not bonded, which greatly improves the assembly efficiency and reduces the assembly difficulty. When the two ends of the sealing strip are vulcanized and bonded into a closed ring, the tension at the joint caused by the stretching of the entire sealing strip after installation is reduced, preventing cracking at the joint after durability. When the two ends of the sealing strip are only in contact but not bonded, the length of the sealing strip is controlled, and the movement of the mounting block in the length direction within the mounting groove is prevented, ensuring the sealing effect of the sealing strip. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a sealing structure for an automotive sunroof according to the present invention.

[0018] Figure 2 This is an assembly cross-sectional view of a car sunroof sealing structure according to the present invention (excluding the limiting notch and limiting protrusion).

[0019] Figure 3 This is a cross-sectional view of the sealing structure for an automobile sunroof according to the present invention (including a limiting notch and a limiting protrusion).

[0020] Figure 4 This is an enlarged view of the three-dimensional structure of the sealing strip.

[0021] Figure 5This is an enlarged view of the 3D structure of the PU edging.

[0022] in:

[0023] 1. Sunroof glass; 2. PU edging; 2.1. Mounting slot; 2.2. Limiting protrusion; 3. Sealing strip; 3.1. Butt joint; 3.2. Mounting block; 3.3. Compressed foam tube; 3.4. Limiting notch; 3.5. Extrusion deformation cavity; 3.6. Core material; 4. Body. Detailed Implementation

[0024] See Figure 1-5 This utility model relates to a sealing structure for an automotive sunroof, including a sunroof glass 1, a PU edging 2, a sealing strip 3, and a car body 4. The PU edging 2 is annularly wrapped around the periphery of the sunroof glass 1, and the sealing strip 3 is snapped into place around the periphery of the PU edging 2. The PU edging 2 has a mounting groove 2.1 corresponding to the sealing strip 3. The mounting groove 2.1 has a U-shaped cross-section and is provided with spaced limiting protrusions 2.2. The sealing strip 3 is joined end to end to form an annular shape. The two ends of the sealing strip are bonded by vulcanization, or they can be in contact but not bonded. The butt joint 3.1 of the sealing strip is located between the two limiting protrusions 2.2, which facilitates the positioning and installation of the sealing strip 3. When the sealing strip 3 is vulcanized and bonded to form a closed ring, the tension at the joint caused by the stretching of the entire sealing strip after installation is reduced, and cracking at the joint is prevented after durability. When the sealing strip is only in contact but not bonded, the length of the sealing strip is controlled and the movement of the mounting block in the length direction within the mounting groove is prevented, thus ensuring the sealing effect of the sealing strip.

[0025] The sealing strip 3 includes a mounting block 3.2 and a compressed bubble tube 3.3. The mounting block 3.2 is T-shaped and engages with the mounting groove 2.1. The sealing strip 3 has a limiting notch 3.4 corresponding to the limiting protrusion 2.2, and the limiting notch 3.4 is located in the length direction of the mounting block.

[0026] The mounting block 3.2 is provided with a compression deformation cavity 3.5, which facilitates the mounting block 3.2 to be inserted into the mounting slot 2.1. The bottom of the limiting notch 3.4 is flush with the inner end face of the compression deformation cavity 3.5.

[0027] The U-shaped groove of the mounting slot 2.1 has an inwardly extending retaining edge, making the groove width of the mounting slot 2.1 smaller than the cavity width, thus realizing the locking function of the mounting slot. The mounting block 3.2 has a barb corresponding to the retaining edge, and the retaining edge of the mounting slot 2.1 locks the barb of the mounting block 3.2 to prevent the sealing strip from falling off.

[0028] The limiting notches 3.4 are symmetrically arranged on both sides of the butt joint 3.1. The mounting blocks 3.2 between the two limiting notches 3.4 and the mounting grooves 2.1 between the two limiting protrusions 2.2 are interference fit in the length direction. The length between the two limiting notches 3.4 is greater than the length between the two limiting protrusions 2.2.

[0029] The width of the limiting notch 3.4 is greater than the width of the corresponding limiting protrusion 2.2, and the height of the limiting protrusion 2.2 is less than the depth of the corresponding limiting notch 3.4.

[0030] The compressed bubble tube 3.3 abuts against the vehicle body 4, and the compressed bubble tube 3.3 can fit into the vehicle body 4 after deformation.

[0031] The mounting block 3.2 is also embedded with a core material 3.6 along the length of the sealing strip 3. The core material 3.6 is copper wire or glass fiber material.

[0032] The mounting clip 3.2, the compression tube 3.3, and the core material 3.6 are integrally extruded. The mounting clip 3.2 is made of EPDM hard rubber material, and the compression tube 3.3 is made of EPDM soft rubber material.

[0033] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A sunroof sealing structure of a sunroof glass, a PU hem, a sealing strip and a vehicle body, wherein the PU hem is annularly coated on a peripheral edge of the sunroof glass, characterized in that: The PU edging is circumferentially fitted with a sealing strip. The PU edging has a mounting groove corresponding to the sealing strip. The sealing strip has a mounting block corresponding to the mounting groove. The mounting groove has spaced-out limiting protrusions. The sealing strip is joined end to end to form a ring. The joint of the sealing strip is located between two limiting protrusions. The sealing strip has a limiting notch corresponding to the limiting protrusion. The limiting notch is located in the length direction of the mounting block.

2. The automotive sunroof sealing structure according to claim 1, characterized in that: The mounting block has a compression deformation cavity, and the bottom of the limiting notch is flush with the inner end face of the compression deformation cavity.

3. The automotive sunroof sealing structure according to claim 1, characterized in that: The mounting slot has a U-shaped cross-section, and the U-shaped opening of the mounting slot has an inward-facing retaining edge. The mounting block has a barb corresponding to the retaining edge.

4. The sunroof sealing structure of claim 1, wherein: The limiting notches are symmetrically arranged on both sides of the joint, and the mounting blocks between the two limiting notches and the mounting grooves between the two limiting protrusions are interference-fitted in the length direction.

5. The automotive sunroof sealing structure according to claim 4, characterized in that: The length between the two limiting notches is greater than the length between the two limiting protrusions.

6. The sunroof sealing structure of claim 1, wherein: The sealing strip is provided with a compression tube on the side corresponding to the vehicle body, and the compression tube abuts against the vehicle body.

7. The sunroof sealing structure of claim 6, wherein: The mounting clip is also embedded with a core material along the length of the sealing strip. The core material is copper wire or glass fiber.

8. The sunroof sealing structure of claim 7, wherein: The mounting clip, compression tube, and core material are integrally extruded. The mounting clip is made of EPDM hard rubber material, and the compression tube is made of EPDM soft rubber material.

9. The sunroof sealing structure of claim 1, wherein: The two ends of the ring-shaped sealing strip are bonded together by vulcanization.

10. The sunroof sealing structure of claim 1, wherein: The two ends of the ring-shaped sealing strip only make contact but do not stick together.

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