Variable compression load sealing system and vehicle

Abstract

The application provides a variable compression load sealing system and a vehicle, and the system comprises a sealing strip for being assembled to a vehicle body panel, the sealing strip has a cavity inside, an interface is arranged on the sealing strip and communicates with the cavity, a gas charging pipe is used for allowing gas to pass through, the gas charging pipe communicates with the interface to input the gas into the cavity, and a support has a fixing hole, and the gas charging pipe passes through the fixing hole. Through the system, the problems that the existing sealing strip has a complex structure, is difficult to assemble, has single performance and cannot have sealing stability and durability under various working conditions are solved.

Description

Technical Field

[0001] This application relates to the field of vehicle body component technology, and in particular to a sealing system and vehicle with variable compression load. Background Technology

[0002] Door sealing strips for passenger vehicles, such as SUVs and sedans, are typically divided into door frame sealing strips and door opening sealing strips. Door frame sealing strips (also known as primary sealing strips) are generally installed on the doors, while door opening sealing strips (also known as door opening sealing strips) are installed on the body. These provide primary and secondary sealing for the entire vehicle, preventing water and air leaks and providing sound insulation. A specific sealing gap is designed between the door sheet metal and the body sheet metal to accommodate the two sealing strips. Therefore, when designing the cross-sectional structure of the two sealing strips, the compressive load and interference of the two sealing strips are reasonably determined based on the sealing gap and the shape of the sheet metal mating surfaces. This ensures that the two sealing strips generate sufficient clamping force after assembly, thereby forming a reliable seal with the sheet metal surface.

[0003] Traditional car door seals typically use EPDM foam tube seals. Due to the easily deformable nature of rubber, corners are prone to collapse and deformation during assembly, reducing the interference between the seal and the sheet metal. Furthermore, sheet metal manufacturing tolerances can lead to uneven sealing gaps, while sheet metal flatness tolerances can cause the seal to not adhere properly to the sheet metal in certain areas or to have insufficient compression load. To prevent abnormal noise from the seal and balance the closing force, the foam tube is usually designed with a lower compression load and interference. Therefore, traditional seals face problems such as wind noise at high speeds, rattling noises from the door on bumpy roads, and friction noises from the seal after durability.

[0004] To simultaneously meet the functional requirements of various operating conditions, such as high-speed driving, driving on bumpy roads, durability testing, door closing while parked, and water leakage prevention, it is extremely difficult to balance the technical parameters such as compression load and interference of the sealing strip when designing it. To address this issue, researchers have used inflatable sealing bubbles to dynamically increase the interference of the sealing strip; however, the resulting sealing structure is complex, difficult to assemble, and has limited performance, failing to achieve both sealing stability and durability under multiple operating conditions. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides a sealing system and vehicle with variable compression load, thereby solving the issues of existing sealing strips having complex structures, difficult assembly, and limited performance, failing to achieve both sealing stability and durability under various working conditions.

[0006] The technical solution of this utility model is:

[0007] A sealing system with variable compression load, the system comprising:

[0008] A sealing strip, used for mounting onto the body sheet metal, has a cavity inside;

[0009] An interface is provided on the sealing strip and communicates with the cavity;

[0010] An inflation tube, used to allow gas to pass through, is connected to the interface to introduce the gas into the cavity;

[0011] A support member is provided, and a fixing hole is provided on the support member, through which the inflation tube passes.

[0012] As one preferred embodiment, the connection between the inflation tube and the interface further includes:

[0013] The inflation tube passes through the sheet metal surface of the vehicle body and connects to the interface;

[0014] A sealing ring is provided on the inflation tube to achieve a seal between the inflation tube and the sheet metal surface.

[0015] As one of the preferred solutions, the support member is fixedly connected to the inflation tube.

[0016] As one of the preferred solutions, the support member is a U-shaped plate with the U-shaped opening facing away from the sealing strip, and the fixing hole is provided on the closed end of the U-shaped plate;

[0017] The U-shaped plate has mounting plates connected to both sides of its open end, and the two mounting plates are provided with connection areas for connection with the body sheet metal.

[0018] As a preferred embodiment, the interface and / or the sealing ring are made of a flexible material.

[0019] As one of the preferred solutions, the sealing strip, the sheet metal surface, the sealing ring, and the support are arranged in a sequentially overlapping manner.

[0020] As one preferred embodiment, the system further includes:

[0021] A gas supply system, which stores gas, is connected to the gas filling pipe;

[0022] A pressure control valve is connected to both the air supply system and the inflation pipe, and is used to control the inflation and deflation of the inflation pipe.

[0023] As one preferred embodiment, the portion of the sealing strip away from the inflation tube has at least one vent hole, and the diameter of each vent hole is smaller than the diameter of the inflation port of the inflation tube.

[0024] As one preferred embodiment, multiple sealing strips are provided, including four side door opening sealing strips and a tail door opening sealing strip; wherein, three inflation tubes are provided;

[0025] Two of the inflation tubes are connected to the sealing strips of the two side door openings on the same side;

[0026] The remaining inflation tube is connected to the tailgate opening sealing strip.

[0027] Based on the same inventive concept, a second aspect of the present application also provides a vehicle including a sealing system with variable compression load as provided in the first aspect of the present invention.

[0028] Compared with the prior art, this application has the following advantages:

[0029] This utility model proposes a variable compression load sealing system, the system comprising: a sealing strip for mounting on a vehicle body sheet metal, the sealing strip having a cavity inside; an interface disposed on the sealing strip and communicating with the cavity; an inflation tube for allowing gas to pass through, the inflation tube communicating with the interface to input the gas into the cavity; and a support member having a fixing hole on the support member through which the inflation tube passes.

[0030] By adopting the technical solution of this application, the compression load, interference, and closing force parameters of the product design are balanced by inflating the sealing strip. This prevents performance and durability issues such as wind noise and abnormal sounds caused by a decrease in compression load due to permanent deformation after long-term compression. The modular design of the sealing strip, interface, inflation tube, and support components makes system assembly more efficient and avoids seal failure during assembly. Therefore, a smarter and more reliable vehicle sealing solution is provided, which not only solves the problem of traditional sealing strips' inability to dynamically adjust the compression load, but also achieves comprehensive improvements in assembly convenience, sealing performance, and long-term reliability, further enhancing the overall vehicle user experience and performance.

[0031] The vehicle and the aforementioned system have the same advantages over existing technologies, which will not be repeated here. Attached Figure Description

[0032] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the assembly of the inflation tube and the sealing strip according to an embodiment of this application;

[0034] Figure 2 This is a partial cross-sectional schematic diagram of the assembled inflation tube, support member and sealing strip according to an embodiment of this application;

[0035] Figure 3 This is an isometric view of the air tube, support member, and sealing strip assembled according to an embodiment of this application;

[0036] Figure 4 This is a front view of the assembled inflation tube, support member, and sealing strip according to an embodiment of this application;

[0037] Figure 5 This is a top view of the assembled inflation tube, support member, and sealing strip according to an embodiment of this application;

[0038] Figure 6 This is a side view of the assembled inflation tube, support member, and sealing strip according to an embodiment of this application;

[0039] Figure 7 This is a system architecture diagram of a sealing system with variable compression load according to an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Sealing strip; 11. Interface; 2. Inflation tube; 21. Inflation port; 3. Support component; 31. Mounting plate; 311. Through hole; 312. Fixing hole; 4. Sealing ring. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Reference Figures 1-6 , Figure 1 This is a schematic diagram showing the assembly of the inflation tube and the sealing strip according to this utility model; Figure 2 This is a partial cross-sectional schematic diagram of the assembled air tube, support member and sealing strip of this utility model. Figure 3 This is an isometric view of the air tube, support, and sealing strip after assembly, as shown in this utility model. Figure 4 This is a front view of the assembled air tube, support member, and sealing strip of this utility model. Figure 5 This is a top view of the assembled air tube, support member, and sealing strip of this utility model. Figure 6 This is a side view of the inflator tube, support member, and sealing strip after assembly, as shown in this utility model.

[0044] This utility model provides a variable compression load sealing system, the system comprising: a sealing strip 1 for mounting on a vehicle body sheet metal, the sealing strip 1 having a cavity inside; an interface 11 disposed on the sealing strip 1 and communicating with the cavity; an inflation pipe 2 for allowing gas to pass through, the inflation pipe 2 communicating with the interface 11 to input gas into the cavity; and a support member 3 having a fixing hole 312 on the support member 3, through which the inflation pipe 2 passes.

[0045] Specifically, the sealing strip 1 is installed on the vehicle body sheet metal. Through its contact with the body sheet metal, the sealing strip 1 achieves a seal between the door and the vehicle body. In this embodiment, the sealing strip 1 is designed as a hollow structure, and its internal cavity provides an air injection space for the system. By injecting compressed air into the cavity, pressure is applied to the sealing strip 1. After inflation, the sealing strip 1 will expand and deform, filling the sealing gap between the door sheet metal and the body sheet metal, while increasing the amount of interference and the compressive load.

[0046] It is known that the bubble tube is typically designed with a low compression load and interference, usually 3-5 N / dm, and a compression amount of 3-5 mm. In actual use, the compression load and interference cannot be too high or too low. Therefore, by filling the bubble tube of sealing strip 1 with compressed air, the expansion and deformation of the bubble tube after inflation automatically adapts to the deterioration of the sealing gap between each door and the body, solving or improving a series of problems such as high-speed wind noise, water leakage from the tailgate, abnormal door slapping noise on bumpy roads, and abnormal friction noise of sealing strip 1.

[0047] Furthermore, it can be understood that the body sheet metal is the foundation for the installation of the sealing strip 1 and other system components, and its form varies depending on the body design and functional requirements. For example, body sheet metal includes door frame sheet metal, door opening sheet metal, tailgate sheet metal, tailgate opening sheet metal, A-pillar / B-pillar / C-pillar sheet metal, front bulkhead sheet metal, and window sheet metal, etc. Due to functional requirements and assembly locations, the sealing strip 1 typically includes door frame sealing strips installed on door frame sheet metal, door opening sealing strips installed on door opening sheet metal, tailgate sealing strip 1 installed on tailgate sheet metal, and tailgate opening sealing strips installed on tailgate opening sheet metal, etc.

[0048] In this embodiment, the sealing strip 1 is preferably a sealing strip for a total of five door openings, including the four side door openings and the tail door opening of the passenger vehicle. Since the door opening sealing strip is mounted on the side of the vehicle body, the travel distance of the inflation pipe 2 is relatively short, making the arrangement of the inflation pipe 2 easy to achieve, and at the same time, the inflation function is highly feasible.

[0049] In some embodiments, the solution can still be used for a total of five door frame sealing strips for the four side doors and the tailgate. The distance of the air supply pipe 2 for providing compressed air is relatively long, making implementation more difficult and costly.

[0050] Preferably, the door opening sealing strip (including the door opening sealing strip for side door openings and the tail door opening sealing strip) can be a single-bubble tube or a double-bubble tube structure, wherein the pipe space inside the bubble tube serves as a cavity. More preferably, when inflating a double-bubble tube, the inner bubble tube can be inflated to reduce the impact on other performance characteristics.

[0051] Interface 11 serves as the connection point between the cavity and the inflation tube 2. It connects the inflation tube 2 to the cavity of the sealing strip 1, enabling gas injection or discharge. Interface 11 can be a hollow cylinder with openings at the top and bottom; the top opening allows air to pass through, while the bottom opening allows the inflation tube 2 to be inserted. The top opening of interface 11 is spaced from the cavity wall to facilitate the flow of compressed air within the cavity.

[0052] The inflation pipe 2 serves as a gas delivery channel, transferring external gas into the cavity of the sealing strip 1. The inflation pipe 2 can be routed through the vehicle's body structure, connecting to the sealing strip 1 via a short path. For example, when the sealing strip 1 is a side door opening seal, the inflation pipe 2 is installed on the sheet metal surface of the sealing strip 1 on the B-pillar of the vehicle body. The inflation pipe 2 can be connected to an independent air supply system to provide air pressure to the bubble tube. Preferably, the inflation pipe 2 can be integrated with the compressed air supply unit of other components. For example, the air inlet of the inflation pipe 2 can be connected to the ASU of the vehicle's chassis air springs, thus sharing the air source with the vehicle's chassis air suspension system, achieving resource sharing, reducing the use of additional components, and improving the overall system efficiency.

[0053] The inflation pipe 2 can be a single-pipe inflation pipe 2, supplying air to each individual sealing strip 1. Alternatively, the inflation pipe 2 can be a branch-type inflation pipe 2, supplying air to at least two sealing strips 1 via a branch connector (such as a multi-way valve). The inflation pipe 2 is flexible, facilitating routing towards the body panel where the sealing strip 1 is located.

[0054] Specifically, an inflation port 21 is provided at the end of the inflation tube 2 furthest from the air inlet. The inflation tube 2 extends from the ASU along the body sheet metal to near the sealing strip 1. The inflation port 21 passes through the sheet metal surface of the corresponding body sheet metal and is inserted into the interface 11. The air port 21 and the interface 11 are press-fitted together to achieve a sealing effect. The interface 11 is a hollow cylinder, and the inflation port 21 is also a hollow cylinder. The outer diameter of the inflation port 21 is designed to be larger than the diameter of the tube body of the inflation tube 2. Therefore, when the inflation port 21 is inserted into the interface 11, the outer wall surface of the inflation port 21 is in close contact with the inner wall surface of the interface 11.

[0055] The support member 3 is an auxiliary structure proposed in this embodiment for fixing the inflation tube 2, so as to facilitate the sealing assembly of the interface 11 with the inflation tube 2. The support member 3 is first assembled onto the corresponding body sheet metal, and then the inflation tube 2 is secured in the designated position through the fixing hole 312. Therefore, when it is necessary to assemble the structure and the inflation tube 2, it is convenient to insert the interface 11 on the bubble tube into the inflation port 21 of the inflation tube 2 to achieve a seal.

[0056] Therefore, in this embodiment, the support member 3 is used to pre-fix the longer inflation tube 2 to prevent the inflation tube 2 from loosening or falling off due to vibration or external force interference. After pre-fixation, the interface 11 on the sealing strip 1 is directly connected to the inflation port 21 of the inflation tube 2 to avoid air leakage or assembly failure due to assembly errors or unstable docking positions. Therefore, the design of the support member 3 enhances the stability of the system, reduces assembly complexity, and improves reliability during use.

[0057] Preferably, the support member 3 is fixedly connected to the inflation tube 2. The inflation port 21 of the inflation tube 2 is fixedly connected to the support member 3, and the sealing strip 1 bubble tube interface 11 can quickly align and securely seal when inserted into the inflation port 21, greatly improving assembly efficiency and stability. The support member 3 can be fixed to the vehicle body sheet metal via bolts or other connecting structures.

[0058] In this way, by inflating the sealing strip 1, the technical parameters such as compression load, interference, and closing force designed in the product are balanced, preventing performance and durability issues such as wind noise and abnormal sounds caused by permanent deformation after long-term compression, which would lead to a decrease in compression load. The modular design of the sealing strip 1, interface 11, inflation pipe 2, and support component 3 makes system assembly more efficient and avoids seal failure during assembly. Therefore, a smarter and more reliable vehicle sealing solution is provided, not only solving the problem that traditional sealing strip 1 cannot dynamically adjust the compression load, but also achieving comprehensive improvements in assembly convenience, sealing performance, and long-term reliability, further enhancing the overall vehicle user experience and performance.

[0059] As a further improvement of this embodiment, the inflation tube 2 passes through the sheet metal surface of the vehicle body and connects to the interface 11; the system also includes a sealing ring 4, which is disposed on the inflation tube 2 to achieve a seal between the inflation tube 2 and the sheet metal surface.

[0060] In this embodiment, as Figure 5 and Figure 6The sheet metal surface shown has an opening. The inflation tube 2 passes through this opening and connects to the interface 11 on the sealing strip 1. Depending on the sheet metal, the sheet metal surface can be a mounting surface on a door frame, door opening, or tailgate. Therefore, the inflation tube 2 is concealed within the sheet metal and passes through the opening on the mounting surface. This optimizes the arrangement path of the inflation tube 2 using the sheet metal, minimizing interference with the body design and reducing the risk of external exposure, thus improving aesthetics and durability.

[0061] The through hole is matched with the shape and size of the air tube 2 to ensure the airtightness of the air tube 2 after installation.

[0062] The support member 3 is also positioned close to the sealing strip 1, and is installed within the corresponding body panel along with the inflation pipe 2. This allows the inflation pipe 2, fixed to it, to be close to the sealing strip 1, so that the interface 11 of the sealing strip 1 and the inflation port 21 of the inflation pipe 2 can be inserted together. For example, when the sealing strip 1 is a door opening sealing strip for four side door openings, the inflation pipe 2 passes through the mounting surface of the B-pillar body panel, so the support member 3 is also fixed to the B-pillar body panel. For example, when the sealing strip 1 is a tailgate door opening sealing strip, the inflation pipe 2 passes through the mounting surface of the tailgate opening panel (e.g., top or side), so the support member 3 is also fixed within the tailgate opening panel near the top or side.

[0063] In this embodiment, a sealing ring 4 is provided on the inflation tube 2, and the sealing ring 4 is located at the through hole of the body sheet metal. It is used to seal the gap between the through hole opened on the body sheet metal and the inflation tube 2. The sealing ring 4 is used to seal the sheet metal hole and prevent water and air leakage.

[0064] Preferably, such as Figure 6 As shown, the sealing strip 1, sheet metal surface, sealing ring 4, and support member 3 are sequentially overlapped. The support member 3 abuts against the mating surface of the sheet metal, and the mating surface of the sheet metal abuts against the sealing strip 1. The sealing ring 4 is fitted onto the inflation port 21 of the inflation tube 2 and is located between the support member 3 and the sheet metal surface. Therefore, the support member 3 is positioned close to the sealing strip 1 and both it and the inflation tube 2 are located within the body sheet metal. The sealing ring 4 is positioned between the support member 3 and the sheet metal surface of the body sheet metal, ensuring that after assembly, the gaps between the through holes on the body sheet metal, the fixing holes 312 on the support member 3, and the inflation port 21 of the inflation tube 2 are sealed. The sealing ring 4 achieves a seal between the sheet metal holes, the holes in the support member 3, and the inlet of the inflation tube 2, providing dual protection for airtightness and watertightness. This effectively prevents water leakage inside the sheet metal and effectively blocks moisture, dust, and other impurities from entering the inflation tube 2 or the interior of the body sheet metal, protecting the normal operation of the system.

[0065] In addition, the sealing strip 1, sheet metal surface, sealing ring 4 and support 3 are arranged in sequence and overlapped, and the air inlet pipe 2 is more tightly connected with the sheet metal surface and sealing strip 1, which further simplifies the gas supply path.

[0066] Furthermore, the sealing ring 4 is fixedly sleeved on the inflation tube 2 and located between the fixing hole 312 of the support member 3 and the through hole on the sheet metal surface. Therefore, the inflation tube 2 can be interference-fitted with the fixing hole 312 of the support member 3, and the sealing ring 4 provides a limit to fix the inflation tube 2 on the support member 3.

[0067] Furthermore, the portion of the sealing strip 1 furthest from the inflation tube 2 has at least one vent hole, the diameter of which is smaller than the diameter of the inflation port 21 of the inflation tube 2. To ensure sealing, the surface of the sealing strip 1 does not need to have as many vent holes as a traditional sealing strip 1; inflation and deflation can both be achieved through the interface 11. In some embodiments, the far end of the sealing strip 1 from the inflation port 21 may also have some small holes, with the hole area much smaller than the inflation port. A pressure difference during inflation can achieve the variable compression load function. The location and size of the holes must be appropriately selected to avoid noise during air leakage.

[0068] Furthermore, the interface 11 and / or the sealing ring 4 are made of flexible materials. Specifically, the sealing ring 4 is made of flexible rubber or high-performance sealing material, capable of adapting to manufacturing tolerances and irregularities of the sheet metal surface, preventing gas or liquid leakage, and buffering vibrations between the inflation tube 2 and the sheet metal, preventing wear or abnormal noise during long-term use. The interface 11 is a rubber interface with sealing properties, adaptable to assembly tolerances between the interface 11 and the inflation port 21, providing an interference fit and sealing effect. Simultaneously, the flexible interface 11 can absorb vibrations during vehicle operation, preventing a decrease in airtightness due to loosening of the inflation port 21 caused by vehicle bumps. Preferably, both the interface 11 and the sealing ring 4 are made of flexible materials, facilitating press-fitting or sliding installation and reducing assembly difficulty.

[0069] As a further explanation of this embodiment, the support member 3 is a U-shaped plate with the U-shaped opening facing away from the sealing strip 1, and a fixing hole 312 is provided on the closed end of the U-shaped plate; wherein, mounting plates 31 are respectively connected to both sides of the open end of the U-shaped plate, and the two mounting plates 31 are provided with connection areas for connecting with the body sheet metal.

[0070] Specifically, the U-shaped support member 3 has good bending strength and rigidity, which can effectively fix the air tube 2. At the same time, the opening is away from the sealing strip 1, and the sealing ring 4 and the sheet metal surface are tightly fitted through the closed end. The opening faces the inside of the body sheet metal and is connected to the body sheet metal through the mounting plates 31 on both sides of the opening. The mounting plates 31 provide multiple connection points for the support member 3. After being connected to the body sheet metal, the overall stability is improved and the support member 3 is prevented from shaking.

[0071] The mounting plate 31 has a connection area, which can be a through hole 311. The support member 3 is fixed to the body sheet metal by bolts passing through the through hole 311. The connection area can be part or all of the surface of the mounting plate 31, and the mounting plate 31 is fixed to the body sheet metal by welding.

[0072] Among them, the mounting plate 31 can be designed to adapt to different sheet metal surfaces (such as flat or curved surfaces) to improve the fit and reliability of the installation.

[0073] As a further extension of this embodiment, such as Figure 7 The diagram shows the system architecture of the variable compression load sealing system. The system also includes: a gas supply system that stores gas and is connected to the inflation pipe 2; a pressure control valve that is connected to both the gas supply system and the inflation pipe 2 and is used to control the inflation and deflation of the inflation pipe 2; and a control system that is connected to both the gas supply system and the pressure control valve.

[0074] In this embodiment, the air supply system is preferably an ASU (Air Supply Unit), which utilizes the ASU integrated into the vehicle chassis air spring system to provide compressed air at a specific pressure. A pressure control valve connects the ASU and the inflation pipe 2, and is used to actively control the inflation and deflation of the bubble tube in the sealing strip 1. This control valve has bidirectional pressure control capability, realizing positive and negative pressure adjustment in the bubble tube to achieve variable compression load function. The pressure control valve also has a dynamically adjustable inflation pressure function, performing specific pressure control on the system according to the vehicle calibration instructions. When the control valve fails, it is necessary to ensure that the inflation pipe 2 is in a normally open state to ensure the basic function of door closure. At this time, the sealing strip 1 can be used as a traditional sealing strip 1.

[0075] The control system can be integrated into the vehicle's ECU (Electronic Control Unit). The ECU controls the ASU (Autonomous Suspension Unit) and pressure control valve to inflate or deflate the system. The ECU can determine the vehicle's operating conditions, such as bumpy roads, high speeds, and parking, based on the chassis suspension control unit or the vehicle control unit, and promptly send inflation or deflation commands to the pressure control valve, dynamically adjusting according to the vehicle's driving conditions.

[0076] The steps for using the system proposed in this embodiment are as follows:

[0077] (1) When the vehicle is at high speed, the system actively increases the pressure inside the bubble tube, causing the bubble tube to expand and deform. The bubble tube will fill and fit according to the shape of the sheet metal surface. This increases the contact area while increasing the compression load, which can reduce the risk of air leakage and improve the sound insulation performance. Because part of the wind noise generated at high speed is due to the pressure difference between the inside and outside of the vehicle under high-speed conditions, the local compression load of the sealing strip 1 is insufficient, resulting in air leakage, which in turn leads to increased noise and decreased sound insulation effect. This utility model specifically improves the compression load and contact area of ​​the sealing strip 1 under high-speed conditions to address this failure mode.

[0078] (2) When the vehicle is on a low-speed bumpy road, the system will actively increase the pressure inside the sealing strip 1 bubble tube to provide a certain reverse support force for the side door and tail door, reduce the displacement of the side door and tail door relative to the vehicle body, and reduce the risk of knocking noise; at the same time, reducing the relative displacement can also alleviate the wear of the coating of the sealing strip 1 and improve the durability of the noise performance.

[0079] (3) When the vehicle is parked, the system will actively release the gas pressure and even provide a moderate negative pressure. At this time, the compression load of the sealing strip 1 on the door is reduced, which can prevent the door from closing too forcefully and thus making it impossible to close the door.

[0080] (4) When the pressure control valve fails, the design of the sealing strip 1 section is required to ensure basic sealing performance. Even if the pressure valve fails and there is no gas pressure in the bubble tube, it will not cause other functional problems. The sealing strip 1 can be used as a traditional sealing strip 1.

[0081] Therefore, compared with the traditional sealing strip 1, the sealing system of this application realizes the function of adjusting and changing the compression load according to the working conditions, and specifically solves the problems of wind noise and reduced sound insulation caused by insufficient compression load and poor sealing at high speed; at the same time, it improves the problem of excessive closing force caused by excessive compression load when the vehicle is stopped.

[0082] Next, the sealing system of this application provides multiple options for adjusting the reverse support force of the sealing strip 1. When the vehicle is traveling on bumpy roads of different levels (intelligent vehicles have the ability to judge operating conditions), the system can automatically adjust the inflation pressure according to the vehicle calibration instructions. When the side doors and tailgate are supported by the sealing strip 1 on bumpy roads, the vibration and relative displacement will be greatly reduced, and the abnormal noise of door shaking and slapping will be improved. At the same time, the wear of the coating on the surface of the sealing strip 1 is also reduced due to the reduction of relative displacement, and the durability of abnormal noise can be significantly improved.

[0083] Furthermore, the sealing system of this application does not require special attention to the balance of technical parameters such as compression load, interference amount, and closing force during product design, and will not cause performance and durability problems such as wind noise and abnormal noise due to permanent deformation after long-term compression leading to a decrease in compression load.

[0084] In this embodiment, multiple sealing strips 1 are provided, including four side door opening sealing strips and a tail door opening sealing strip. Three inflation pipes 2 are provided; two inflation pipes 2 are connected to the two side door opening sealing strips on the same side; the remaining inflation pipe 2 is connected to the tail door opening sealing strip.

[0085] In this embodiment, the inflation pipe 2 can be split into two directions using a tee, connecting to the front door opening seal and the rear door opening seal on the same side of the vehicle, respectively. Therefore, the entire vehicle only needs three inflation pipes 2 to achieve a variable compression load sealing system for the left front, left rear, right front, right rear doors, and tailgate.

[0086] Specifically, the five door opening seals are divided into a left front door opening seal, a left rear door opening seal, a right front door opening seal, a left rear door opening seal, and a tail door opening seal. Each of these seals has a corresponding interface 11, which is connected to a pressure control valve via the inflation port 21 of the inflation pipe 2. The pressure control valve then connects to the ASU (Air Supply Unit) to provide air pressure to each seal 1. The ECU, based on the current operating conditions, controls the bidirectional pressure control valve to actively control the positive and negative pressure within each seal 1. By utilizing the expansion and deformation of the sealing strip 1 after inflation, it automatically adapts to the deterioration of the sealing gap between each door and the body. The compression load and interference can be adjusted according to the air pressure. The pressure control valve actively controls the air pressure inside the sealing strip 1 and has the function of actively inflating or deflating according to different working conditions. This solves or improves a series of problems such as high-speed wind noise, tailgate water leakage, abnormal door knocking noise on bumpy roads, and abnormal friction noise of the sealing strip 1 system. At the same time, the closing force of the door can also be controlled by actively adjusting the gas pressure (such as negative pressure) inside the sealing strip 1 bubble tube through the pressure control valve.

[0087] Based on the same inventive concept, a second aspect of this application provides a vehicle including a sealing system with variable compression load as provided in the first aspect of this utility model.

[0088] As the vehicle embodiment is basically similar to the system embodiment, the description is relatively simple, and relevant parts can be found in the description of the system embodiment.

[0089] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0090] It should also be noted that, in this document, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for 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 the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device.

[0091] The above provides a detailed description of a variable compression load sealing system and vehicle provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, those skilled in the art will recognize that various modifications and variations in the specific implementation methods and application scope based on this application are possible. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious variations or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A sealing system with variable compression load, characterized in that, The system includes: A sealing strip, used for mounting onto the body sheet metal, has a cavity inside; An interface is provided on the sealing strip and communicates with the cavity; An inflation tube, used to allow gas to pass through, is connected to the interface to introduce the gas into the cavity; A support member is provided, and a fixing hole is provided on the support member, through which the inflation tube passes.

2. The variable compression load sealing system according to claim 1, characterized in that, The connection between the inflation tube and the interface also includes: The inflation tube passes through the sheet metal surface of the vehicle body and connects to the interface; A sealing ring is provided on the inflation tube to achieve a seal between the inflation tube and the sheet metal surface.

3. A sealing system with variable compression load according to claim 1, characterized in that, The support member is fixedly connected to the inflation tube.

4. A sealing system with variable compression load according to claim 1, characterized in that, The support member is a U-shaped plate with the U-shaped opening facing away from the sealing strip, and the fixing hole is provided on the closed end of the U-shaped plate; The U-shaped plate has mounting plates connected to both sides of its open end, and the two mounting plates are provided with connection areas for connection with the body sheet metal.

5. A sealing system with variable compression load according to claim 2, characterized in that, The interface and / or the sealing ring are made of a flexible material.

6. A sealing system with variable compression load according to claim 2, characterized in that, The sealing strip, the sheet metal surface, the sealing ring, and the support member are arranged in a sequentially overlapping manner.

7. A sealing system with variable compression load according to claim 6, characterized in that, The system also includes: A gas supply system, which stores gas, is connected to the gas filling pipe; A pressure control valve is connected to both the air supply system and the inflation pipe, and is used to control the inflation and deflation of the inflation pipe. The control system is connected to the gas supply system and the pressure control valve, respectively.

8. A sealing system with variable compression load according to claim 1, characterized in that, The portion of the sealing strip away from the inflation tube has at least one vent hole, and the diameter of each vent hole is smaller than the diameter of the inflation port of the inflation tube.

9. A variable compression load sealing system according to any one of claims 1-8, characterized in that, The sealing strips are provided in multiple ways, including four side door opening sealing strips and a tail door opening sealing strip; and the air inlet pipes are provided in three ways. Two of the inflation tubes are connected to the sealing strips of the two side door openings on the same side; The remaining inflation tube is connected to the tailgate opening sealing strip.

10. A vehicle, characterized in that, Including the variable compression load sealing system as described in any one of claims 1-9.

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