A top cover noise reduction type multi-layer composite sealing structure

Abstract

This utility model discloses a multi-layer composite sealing structure for noise reduction of vehicle roof panels, including a vehicle roof panel with an installation opening and an installation platform inside the opening. Three loop-shaped frames are sequentially fitted onto the bottom of the roof panel, forming two first loop-shaped grooves. A first sealing ring is disposed within the inner first loop-shaped groove. A housing is inserted into the inner first loop-shaped groove, and a sound-insulating plate is disposed inside. A second loop-shaped groove is disposed on the installation platform and adapted to the outer loop-shaped frame. A second sealing ring is disposed inside the second loop-shaped groove. A third sealing ring is disposed on the installation platform and located inside the second loop-shaped groove, adapted to the outer first loop-shaped groove. This utility model relates to the field of vehicle roof panel technology. By setting a triple sealing layer of first, second, and third sealing rings, a multi-level sealing barrier is formed, effectively preventing sealing failure caused by changes in ambient temperature, vibration, or material aging.

Description

Technical Field

[0001] This utility model relates to the field of vehicle roof technology, specifically to a roof noise reduction type multi-layer composite sealing structure. Background Technology

[0002] In the field of vehicle manufacturing, the roof, as an important component of the vehicle, not only needs to have good structural strength and sealing performance, but also needs to effectively reduce noise generated by wind noise, vibration and other factors during driving, so as to improve driving comfort.

[0003] In existing technologies, the sealing between the vehicle roof and the mounting opening on the body mostly relies on a single-layer sealing ring. However, with the increase of service time, the seal is easily affected by ambient temperature, vibration and material aging, which can lead to air leakage and water leakage. To address this, a multi-layer composite sealing structure for roof noise reduction is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a top cover noise reduction type multi-layer composite sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a top cover noise-reducing multi-layer composite sealing structure, comprising:

[0006] A vehicle roof panel, wherein the vehicle roof panel is provided with an installation opening, and an installation platform is provided on the inner side of the installation opening;

[0007] A top cover is installed on the vehicle roof, and three loop-shaped frames are sequentially fitted at its bottom, forming two first loop-shaped grooves;

[0008] The first sealing ring is disposed in the first loop-shaped groove located on the inner side;

[0009] A housing, which is inserted into the inner first U-shaped groove, and has a sound insulation plate inside;

[0010] The second spiral groove is provided on the mounting platform and is adapted to the outer spiral frame;

[0011] The second sealing ring is disposed inside the second spiral groove;

[0012] The third sealing ring is disposed on the mounting platform and located inside the second spiral groove, and is adapted to the outer first spiral groove.

[0013] Preferably, the outer wall of the central loop frame is set as an inclined surface;

[0014] The third sealing ring is an elastic sealing ring, which is pressed against the outer first U-shaped groove to form a seal.

[0015] Preferably, both the first and second sealing rings are wear-resistant sealing rings.

[0016] Preferably, the mounting platform has a plurality of evenly distributed through holes located on the outer side of the second U-shaped groove, and the bottom of the top cover has a plurality of first screws that penetrate the through holes, and the bottom of the first screws has a locking nut.

[0017] Preferably, the side wall of the housing is provided with a plurality of threaded through holes, and the inner side of the spiral frame is provided with threaded blind holes that are adapted to the threaded through holes. A second screw is installed between the threaded through holes and the threaded blind holes.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This utility model has a top cover noise reduction type multi-layer composite sealing structure, which forms a multi-level sealing barrier by setting a first sealing ring, a second sealing ring and a third sealing ring, effectively preventing sealing failure caused by changes in ambient temperature, vibration or material aging, and effectively avoiding the problems of air leakage and water leakage.

[0019] The second and third sealing rings are designed with wear-resistant and elastic sealing rings, which can adapt to installation errors through extrusion deformation and resist long-term friction and wear, thus extending service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0021] Figure 2 This is a top view of the vehicle roof panel of this utility model.

[0022] Figure 3 This is a bottom view of the top cover of this utility model.

[0023] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A;

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B;

[0025] Figure 6 for Figure 3 A magnified structural diagram of point C.

[0026] In the diagram: 1. Vehicle roof panel; 1-1. Mounting port; 1-2. Mounting platform; 2. Top cover; 2-1. U-shaped frame; 2-2. First U-shaped groove; 3. First sealing ring; 4. Housing; 5. Sound insulation panel; 6. Second U-shaped groove; 7. Second sealing ring; 8. Third sealing ring; 9. Through hole; 10. First screw; 11. Locking nut; 12. Threaded through hole; 13. Threaded blind hole; 14. Second screw. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 This utility model provides a technical solution: a multi-layer composite sealing structure for noise reduction of a roof cover, including a vehicle roof panel 1. The vehicle roof panel 1 has an installation opening 1-1 for fixing a roof cover 2. An installation platform 1-2 is provided inside the installation opening 1-1, providing a support surface for the installation of the roof cover 2 and integrating multiple sealing structures. The roof cover 2 is installed on the vehicle roof panel 1, and three loop-shaped frames 2-1 are sequentially fitted onto its bottom, forming two first loop-shaped grooves 2-2, located on the inner and outer sides of the bottom of the roof cover 2, respectively. A first sealing ring 3 is disposed within the inner first loop-shaped groove 2-2. A housing 4 is inserted into the inner first loop-shaped groove 2-2, forming a seal between the housing 4 and the first loop-shaped groove 2-2. A sound-absorbing plate 5 is provided inside the housing 4 for absorbing noise. The sound insulation panel 5 can be made of sound-absorbing foam, metal plate or composite material to absorb wind noise and vibration noise during vehicle operation, reducing noise transmission to the vehicle interior; the second loop groove 6 is set on the mounting platform 1-2 and is adapted to the outer loop frame 2-1; the second sealing ring 7 is set inside the second loop groove 6 to form an outer sealing barrier; the third sealing ring 8 is set on the mounting platform 1-2 and located inside the second loop groove 6, and is adapted to the outer first loop groove 2-2 to further enhance the sealing effect. Through the synergistic effect of the first sealing ring 3, the second sealing ring 7 and the third sealing ring 8, a three-layer sealing barrier is formed from the inside to the outside, effectively blocking wind noise, vibration noise and external pollutants such as rainwater and dust.

[0029] Specifically, the outer wall of the central loop frame 2-1 is set as an inclined surface; the third sealing ring 8 is an elastic sealing ring, which can be made of highly elastic materials such as silicone, EPDM rubber or polyurethane, with good compression deformation capacity and resilience, and can adapt to complex installation environments and dynamic loads. It is squeezed with the outer first loop groove 2-2 to form a seal. When the top cover 2 is installed in place, the third sealing ring 8 is squeezed by the inner wall of the outer first loop groove 2-2 to form a mechanical seal. This squeezing action is achieved through the elastic deformation of the third sealing ring 8, ensuring that it fits tightly against the surface of the first loop groove 2-2, blocking the penetration of external pollutants such as rainwater, dust and noise. During vehicle operation, the top cover 2 may undergo slight displacement due to vibration or temperature changes. The third sealing ring 8 can compensate for these displacements through its own deformation to maintain a long-term stable sealing effect.

[0030] Specifically, both the first sealing ring 3 and the second sealing ring 7 are made of wear-resistant materials; they can be made of EPDM rubber, silicone, polyurethane or modified fluororubber to avoid sealing failure due to material aging or damage, thereby improving the long-term reliability of the overall structure.

[0031] Specifically, the mounting platform 1-2 has several evenly distributed through holes 9 on the outside of the second U-shaped groove 6, and the bottom of the top cover 2 has several first screws 10 that penetrate the through holes 9. The bottom of the first screws 10 has a locking nut 11. The first screws 10 are fasteners that penetrate the through holes 9. Their tops are fixedly connected to the bottom of the top cover 2, and their bottoms are fixed by the locking nuts 11. During the installation process, the contact surface between the top cover 2 and the mounting platform 1-2 may be slightly squeezed, which helps to enhance the sealing effect of the sealing ring.

[0032] Specifically, the side wall of the housing 4 is provided with several threaded through holes 12, and the inner ring frame 2-1 is provided with threaded blind holes 13 that are adapted to the threaded through holes 12. A second screw 14 is installed between the threaded through holes 12 and the threaded blind holes 13. The second screw 14 is screwed into the threaded through holes 12 of the housing 4, passes through the threaded through holes 12 and connects to the threaded blind holes 13 of the inner ring frame 2-1, thus achieving a rigid connection between the housing 4 and the ring frame 2-1. The threaded connection design of the second screw 14 allows the housing 4 to be quickly disassembled when needed, which is convenient for maintenance or replacement of internal components.

[0033] Working principle: When this utility model is in operation, the top cover 2 is fixed by the mounting platform 1-2 of the mounting port 1-1. The first sealing ring 3 is embedded in the inner first loop groove 2-2, and the housing 4 is inserted into the groove to form a sealing barrier. The second loop groove 6 on the mounting platform 1-2 is adapted to the outer loop frame 2-1, and the second sealing ring 7 is embedded therein to form an outer sealing barrier. The third sealing ring 8 is located inside the second loop groove 6 and is adapted to the outer first loop groove 2-2. The seal is achieved by mechanical extrusion deformation.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite sealing structure for noise reduction of the top cover, characterized in that, include: The vehicle roof (1) has an installation port (1-1) and an installation platform (1-2) is provided on the inner side of the installation port (1-1). Top cover (2), the top cover (2) is installed on the vehicle roof plate (1), and three loop frames (2-1) are sequentially fitted on its bottom, the three loop frames (2-1) forming two first loop grooves (2-2). The first sealing ring (3) is disposed in the first spiral groove (2-2) located on the inner side; The housing (4) is inserted into the inner first groove (2-2), and a sound insulation plate (5) is provided inside it. The second spiral groove (6) is provided on the mounting platform (1-2) and is adapted to the outer spiral frame (2-1); The second sealing ring (7) is disposed inside the second spiral groove (6); The third sealing ring (8) is disposed on the mounting platform (1-2) and located inside the second spiral groove (6), and is adapted to the outer first spiral groove (2-2).

2. The top cover noise reduction type multi-layer composite sealing structure according to claim 1, characterized in that: The outer wall of the central loop frame (2-1) is set as an inclined surface; The third sealing ring (8) is an elastic sealing ring, which is pressed against the outer first spiral groove (2-2) to form a seal.

3. The top cover noise reduction type multi-layer composite sealing structure according to claim 1, characterized in that: Both the first sealing ring (3) and the second sealing ring (7) are set as wear-resistant sealing rings.

4. The top cover noise reduction type multi-layer composite sealing structure according to claim 1, characterized in that: The mounting platform (1-2) is provided with several evenly distributed through holes (9) on the outside of the second groove (6), and the bottom of the top cover (2) is provided with several first screws (10) that pass through the through holes (9), and the bottom of the first screws (10) is provided with locking nuts (11).

5. The top cover noise reduction type multi-layer composite sealing structure according to claim 1, characterized in that: The side wall of the housing (4) is provided with several threaded through holes (12), and the inner side of the spiral frame (2-1) is provided with threaded blind holes (13) that are compatible with the threaded through holes (12). A second screw (14) is installed between the threaded through holes (12) and the threaded blind holes (13).

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