Zero-step vehicle door sealing system

Abstract

Disclosed is a zero-step vehicle door sealing system, belonging to the technical field of vehicle doors, and solving the problem of needing to prevent water from entering gaps between a piece of movable glass and a guide channel sealing strip and between the movable glass and a sealing lip, so as to prevent rainwater from entering an internal structure of a vehicle door through the gaps and diffusing into the internal structure of the vehicle door, thereby preventing moisture buildup within the vehicle door. The zero-step vehicle door sealing system comprises: a plastic support (2), wherein the plastic support is strip-shaped and is open on one side in the direction of length thereof, and a connecting support (3) with a flared opening is integrally formed at one end of the plastic support; an upper waterproof guide rail frame (4) embedded in the connecting support; a lower waterproof guide rail frame; an upper connecting rail (5); and an interior trim strip (8). The zero-step vehicle door sealing system is applied to the vehicle door, sealing is achieved by abutting the movable glass against a waterproof plate, rainwater leakage is prevented, the displacement resistance is reduced, and stable sliding is ensured; an integrated structure of the interior trim strip and the waterproof plate enhances the sealing performance; and a split structure facilitates production and assembly, ensures the sealing effect of the vehicle door, prevents rainwater from spreading, and protects a vehicle door structure.

Description

A zero-surface-difference door sealing system Technical Field

[0001] This invention relates to the field of automotive door technology, and more particularly to a zero-surface-difference door sealing system. Background Technology

[0002] In modern automotive design, to enhance aesthetics and reduce wind resistance and noise (improving NVH performance), a "zero-surface-difference" design with a smooth transition between the door glass and the outer door panel has become an important development trend. This design requires that when the window glass is closed, its outer surface can form a near-perfect continuous curve with the door waistline and the body trim above it.

[0003] To achieve this goal, the industry has developed various sophisticated glass guiding and sealing solutions. For example, Chinese utility model patent CN218085033U discloses a zero-face difference car door system. This system, by employing a specially designed dual-material injection-molded slider and guide rail sealing strip, precisely restricts the X and Y direction movement trajectory of the moving glass, successfully achieving a flush-fitting door side profile and improving the sealing performance of the glass at the window frame. This type of technology represents the current mainstream technological level in achieving "zero-face difference" external styling and waistline sealing.

[0004] However, existing technologies, including the solutions disclosed in the aforementioned patents, generally focus on sealing the visible area above the door waistline, i.e., how to construct the first line of defense against water damage. But a persistent and undeniable technical challenge in practice is that no waistline sealing strip can achieve 100% waterproofing. In cases of heavy rain, high-pressure car washes, or aging of the sealing strip after prolonged vehicle use, some rainwater will inevitably bypass this first line of defense and flow along the glass surface into the interior cavity of the door.

[0005] Current technology generally lacks a systematic and efficient management mechanism for this intrusive water flow. Typically, this water drips to the bottom of the door cavity under gravity or spreads randomly inside the door. This uncontrolled water spread can lead to a series of serious problems: window regulator motors, door lock modules, speaker units, and various wiring harnesses and electronic components inside the door may corrode and short-circuit due to prolonged exposure to a humid environment, resulting in malfunctions and safety hazards; moisture can penetrate the door trim panels, causing mold, deformation, and unpleasant odors, severely affecting the interior environment and driving experience; and moisture accumulated at the bottom of the door cavity accelerates the corrosion of the door's sheet metal parts, shortening the door's lifespan.

[0006] Therefore, the urgent technical problem to be solved in this field is: how to provide a door sealing system that can not only achieve a zero-surface-difference external shape, but also effectively manage and block secondary water flow that seeps in after passing the first main sealing strip below the door waistline, providing a reliable seal and stable guidance for the lower half of the main window glass, thereby comprehensively protecting the precision components inside the door from moisture damage. Summary of the Invention

[0007] This invention aims to address the problem that existing zero-surface-difference door sealing solutions generally only focus on the external sealing above the waistline, neglecting the technical issue of effectively managing the inevitable water flow that intrudes into the door. This uncontrolled water flow can corrode internal components such as window regulators and door locks, and damage interior trim panels, seriously affecting the reliability and durability of the vehicle.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A zero-surface-difference door sealing system, characterized in that it includes:

[0010] A plastic bracket, which is strip-shaped and open on one side along its length, and one end of the plastic bracket is integrally formed with a connecting bracket with a flared opening.

[0011] The upper waterproof guide rail frame is embedded in the connecting bracket, and an outer upper waterproof plate located below the waistline is fixedly connected to one side of the upper waterproof guide rail frame.

[0012] The lower waterproof guide rail frame is embedded in a plastic bracket and located below the upper waterproof guide rail frame. An outer lower waterproof plate located below the outer upper waterproof plate is fixedly connected to one side of the lower waterproof guide rail frame.

[0013] The upper connecting rail is embedded in the inner ring of the upper waterproof guide rail frame and located above the lower waterproof guide rail frame. An upper reinforcing plate is fixedly connected to one side of the upper connecting rail, and a lower reinforcing plate located below the upper reinforcing plate is fixedly connected to the plastic bracket.

[0014] The interior trim strip is long and narrow, and is fitted over the outer sides of the upper and lower reinforcing plates. An inner waterproofing plate is fixedly connected to the side of the interior trim strip facing the outer upper and lower waterproofing plates.

[0015] The inner waterproof membrane, the upper outer waterproof membrane, and the lower outer waterproof membrane all have elastic deformation properties, and the upper outer waterproof membrane, the lower outer waterproof membrane, and the inner waterproof membrane allow for glass displacement.

[0016] Preferably, the upper reinforcing plate and the lower reinforcing plate are spaced apart.

[0017] Preferably, the upper connecting rail is fixedly connected to a protruding strip, and an inner mounting strip that matches the protruding strip is provided inside the upper connecting rail. An inner guide rail is fixedly connected to the inner mounting strip, and an inner waterproof plate that can be used to contact the end face of the moving glass is fixedly connected to the inner guide rail.

[0018] Preferably, a slider with a circular cross-section is slidably connected inside the inner guide rail. A connecting strip is fixedly connected to one side of the slider, and a sheet-like connecting piece is fixedly connected to the side of the connecting strip away from the slider. A sealing strip is fixedly connected to the end face of the connecting piece, and the sealing strip can be used to make fixed contact with the end face of the movable glass.

[0019] Preferably, the connecting piece is fixedly connected to the movable glass via a sealing strip.

[0020] Preferably, the sealing strip and the inner waterproof plate are respectively disposed on both sides of the movable glass.

[0021] Preferably, an upper baffle plate, which is strip-shaped and abuts against the interior trim strip, is fixedly connected to the side of the inner guide rail away from the inner waterproof plate, and a lower baffle plate located below the upper baffle plate is fixedly connected to the lower waterproof guide rail frame, and the lower baffle plate also abuts against the interior trim strip.

[0022] Preferably, the interior trim strip has a U-shaped cross-section, and a plurality of inner lips are fixedly connected to one side of the inner ring of the interior trim strip. The interior trim strip clamps and fixes the upper reinforcing plate and the lower reinforcing plate by the plurality of inner lips.

[0023] Preferably, the inner ring of the upper waterproof guide rail frame is fixedly connected to an inner support edge located above the inner bottom surface of the connecting bracket, and the inner ring of the inner support edge forms a channel for the slider and connecting strip to move.

[0024] Preferably, a guide groove is provided at the upper end of the inner support edge located on the outer ring of the channel, and the cross-sectional area of ​​the through groove opening at the guide groove gradually decreases from top to bottom.

[0025] Preferably, the outer upper waterproofing plate includes an arc-shaped outer upper main waterproofing section, and the outer lower waterproofing plate includes an arc-shaped outer lower main waterproofing section with the same cross-sectional shape as the outer upper main waterproofing section.

[0026] Preferably, the outer upper waterproofing plate further includes an arc-shaped outer upper auxiliary waterproofing part, the arc length of which is less than the arc length of the outer upper main waterproofing part. The outer lower waterproofing plate further includes an arc-shaped outer lower auxiliary waterproofing part with the same cross-sectional shape as the outer upper auxiliary waterproofing part, the cross-section of which is the same as that of the outer upper auxiliary waterproofing part. Both the outer lower auxiliary waterproofing part and the outer upper auxiliary waterproofing part are fitted to one side of the plastic bracket and the connecting bracket.

[0027] Preferably, the slider has a circular cross-section to achieve low-friction line contact sliding within the inner guide rail.

[0028] Preferably, the interior trim strip and the inner waterproof panel are integrally formed to enhance the structural integrity and water tightness of the assembly.

[0029] Preferably, the flared opening of the connecting bracket forms an inlet ramp for guiding the upper waterproof guide rail frame to be quickly positioned and assembled.

[0030] Preferably, it further includes an inner guide rail and an assembly that can slide within the inner guide rail, the assembly including a slider with a circular cross-section, a connecting piece and a sealing strip for contacting the moving glass.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. When the sliding glass descends below the waistline, it is completely contained within a guide channel formed by an inner waterproof panel, an upper outer waterproof panel, and a lower outer waterproof panel. This structure effectively catches and blocks any rainwater that seeps in along the glass or guide rails, guiding it systematically to the bottom of the door for drainage. This fundamentally solves the problem of component corrosion and damage caused by rainwater flowing randomly within the door cavity, ensuring the long-term dryness of the door interior.

[0033] 2. When the sliding glass descends below the waistline, it is completely contained within a guide channel formed by an inner waterproof panel, an upper outer waterproof panel, and a lower outer waterproof panel. This structure effectively catches and blocks rainwater seeping in along the glass or guide rails, guiding it systematically to the bottom of the door for drainage. This fundamentally solves the problem of component corrosion and damage caused by rainwater flowing randomly within the door cavity, ensuring the long-term dryness of the door interior.

[0034] 3. The circular cross-section design of the slider transforms traditional surface friction into low-resistance line contact sliding, reducing motion resistance during glass lifting and ensuring smooth, stable operation without jamming or abnormal noise. Simultaneously, the waterproof plates and sealing strips on both the inner and outer sides form an effective flexible clamping seal for the glass, ensuring excellent sealing performance.

[0035] 4. The interior trim strips and the inner waterproofing plate adopt an integrated structure, eliminating the assembly gaps that may exist between separate structures. When in contact with moving glass, it forms a more complete and reliable sealing interface. Combined with the multi-layer waterproofing plate structure, it improves the sealing performance and durability of the entire vehicle. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the structure of the present invention;

[0038] Figure 2 is a cross-sectional view of the present invention;

[0039] Figure 3 is an enlarged view of point A in Figure 2;

[0040] Figure 4 is a second cross-sectional view of the present invention;

[0041] Figure 5 is an enlarged view of point B in Figure 4;

[0042] Figure 6 is a structural schematic diagram of the plastic bracket, waterproof guide rail frame, upper outer waterproof plate and lower outer waterproof plate in this invention;

[0043] Figure 7 is an enlarged view of point C in Figure 6.

[0044] 1. Movable glass; 2. Plastic bracket; 3. Connecting bracket; 4. Upper waterproof guide rail frame; 5. Upper connecting rail; 6. Raised strip; 7. Upper reinforcing plate; 8. Interior trim strip; 9. Inner lip; 10. Inner waterproof plate; 11. Outer upper waterproof plate; 12. Outer upper main waterproof part; 13. Outer upper auxiliary waterproof part; 14. Inner mounting strip; 15. Inner guide rail strip; 16. Inner waterproof plate; 17. Upper baffle plate; 18. Slider; 19. Connecting strip; 20. Connecting piece; 21. Sealing strip; 22. Outer lower waterproof plate; 23. Outer lower main waterproof part; 24. Outer lower auxiliary waterproof part; 25. Inner support edge; 26. Guide groove; 27. Lower baffle plate. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0047] The 'fixed connection' mentioned between the different components of this invention can be achieved in a variety of ways well known to those skilled in the art. These methods include, but are not limited to: gluing with adhesives, ultrasonic welding, connecting with mechanical fasteners such as clips or screws, or integrally molding the components through processes such as co-extrusion.

[0048] A zero-surface-difference door sealing system, as shown in Figures 1 to 7, includes...

[0049] Plastic bracket 2, which is strip-shaped and open on one side along its length, and one end of plastic bracket 2 is integrally formed with a connecting bracket 3 with a flared opening.

[0050] The upper waterproof guide frame 4 is embedded in the connecting bracket 3, and an outer upper waterproof plate 11 located below the waistline is fixedly connected to one side of the upper waterproof guide frame 4.

[0051] The lower waterproof guide rail frame is embedded in the plastic bracket 2 and located below the upper waterproof guide rail frame 4. The lower waterproof guide rail frame is fixedly connected to the lower outer waterproof plate 22 located below the upper outer waterproof plate 11 on one side.

[0052] The upper connecting rail 5 is embedded in the inner ring of the upper waterproof guide rail frame 4 and is located above the lower waterproof guide rail frame. An upper reinforcing plate 7 is fixedly connected to one side of the upper connecting rail 5, and a lower reinforcing plate located below the upper reinforcing plate 7 is fixedly connected to the plastic bracket 2.

[0053] Preferably, the lower reinforcing plate and the upper reinforcing plate 7 are spaced apart, specifically: the upper reinforcing plate 7 and the lower reinforcing plate form a spaced area distributed along the length of the plastic support, thereby reducing the amount of material used while ensuring structural strength.

[0054] Interior trim strip 8 is long and strip-shaped, and is fitted on the outside of upper reinforcing plate 7 and lower reinforcing plate. An inner waterproof plate 10 is fixedly connected to the side of interior trim strip 8 facing the outer upper waterproof plate 11 and outer lower waterproof plate 22. The inner waterproof plate 10 is set to the same length as interior trim strip 8.

[0055] The inner waterproof membrane 10, the upper outer waterproof membrane 11, and the lower outer waterproof membrane 22 all have elastic deformation properties, and the upper outer waterproof membrane 11, the lower outer waterproof membrane 22, and the inner waterproof membrane 10 allow for the displacement of the movable glass 1.

[0056] Preferably, the inner waterproof membrane 10, the outer upper waterproof membrane 11, the outer lower waterproof membrane 22, and the inner waterproof membrane 16, which are in direct contact with the movable glass 1 to achieve a seal, are all made of elastomers with excellent weather resistance, ozone resistance, and elasticity. A particularly preferred material is ethylene propylene diene monomer (EPDM) rubber, which exhibits excellent durability in automotive sealing applications. To achieve a balance between sealing and sliding friction, EPDM materials with a Shore A hardness in the range of 40 to 90, for example, 70 ± 5, can be selected. In addition, other materials such as thermoplastic elastomers (TPEs) and polyvinyl chloride (PVC) can also be used as alternatives.

[0057] Plastic bracket 2 and connecting bracket 3 are installed inside the car door, located below the waistline. They primarily support and fix other structures, while also receiving and draining rainwater. The upper waterproof guide frame 4 serves as a support element. With the plastic bracket 2 and connecting bracket 3 connecting to the upper connecting rail 5, an outer upper waterproof plate 11 is added. This extends the upper end of the lower outer waterproof plate 22 of the upper and lower reinforcing plates of the plastic bracket 2, allowing it to reach the upper end of the connecting bracket 3. This prevents leakage of the movable glass 1 at the connection point when the upper connecting rail 5 connects to the connecting bracket 3. Simultaneously, the elastic edges of the outer upper waterproof plate 11 and outer lower waterproof plate 22 on the upper and lower waterproof guide frames 4 and 4 make slight contact with the outer surface of the glass, preventing rainwater flowing between the movable glass 1 and the guide rail from spreading towards other structures inside the car door.

[0058] The "flared design" of the connecting bracket 3 is a typical "error-proof" and "easy-to-assemble" design. It forms a guide entrance, which makes it easy for the waterproof guide rail frame 4 to be quickly and accurately embedded during assembly.

[0059] Similarly, the interior trim strip 8 and the inner waterproof plate 10 fixedly connected thereto can cooperate with the outer upper waterproof plate 11 and the outer lower waterproof plate 22 to further block rainwater from entering between the movable glass 1 and the guide rail, preventing rainwater from spreading to other structures inside the door. In addition, the interior trim strip 8 and the inner waterproof plate 10 fixedly connected thereto can also seal the space between the movable glass 1 and the window frame when the movable glass 1 closes the window, ensuring the sealing effect when the movable glass 1 is closed.

[0060] The integrated structure of the interior trim strip 8 and the inner waterproof plate 10 can be manufactured by a co-extrusion process to ensure that even if moisture intrusion occurs under extreme conditions, the interior panel of the door will not be contaminated.

[0061] Preferably, as shown in Figures 3 and 5, a protruding strip 6 is fixedly connected to the inner side of the upper connecting rail 5, and an inner mounting strip 14 that matches the cross section of the protruding strip 6 is provided inside the upper connecting rail 5. An inner guide rail 15 is fixedly connected to the inner mounting strip 14, and an inner waterproof plate 16 that can be used to contact the end face of the movable glass 1 is fixedly connected to the inner guide rail 15.

[0062] By setting the protrusion 6, the connection strength of the inner mounting strip 14 can be increased when it is connected in the upper connecting rail 5, making its installation more stable. The inner guide rail 15, which is fixedly connected to the inner mounting strip 14, can provide space for guiding the displacement of the slider 18. The inner waterproof plate 16, which is fixed to the inner guide rail 15, can add another layer of blocking process for rainwater on the movable glass 1.

[0063] Preferably, a slider 18 with a circular cross-section is slidably connected inside the inner guide rail 15. A connecting strip 19 is fixedly connected to one side of the slider 18. A sheet-like connecting piece 20 is fixedly connected to the side of the connecting strip 19 away from the slider 18. A sealing strip 21 is fixedly connected to the end face of the connecting piece 20. The sealing strip 21 can be used to make fixed contact with the end face of the movable glass 1. The sealing strip 21 and the inner waterproof plate 16 are respectively used to be set on both sides of the movable glass 1.

[0064] Since the cross-section of the slider 18 is circular, the contact area can be minimized when the slider 18 slides within the inner guide rail 15, thereby reducing the resistance generated when the slider 18 slides, making the slider 18 move more smoothly with the movement of the glass 1. The sealing strip 21 is provided to ensure a better fixed connection between the end face of the glass 1 and the connecting piece 20.

[0065] To further reduce resistance during the lifting and lowering of the movable glass 1, improve the smoothness of operation, and reduce noise, a low-friction coating can be applied to the inner sliding surface of the inner guide rail 15 and / or the outer sliding surface of the slider 18. Such a coating can be, for example, a low-friction lubricant, or a polytetrafluoroethylene (PTFE) coating or a molybdenum disulfide (MoS2) coating. These dry film lubricating coatings have extremely low coefficients of friction, ensuring that the slider maintains smooth and stable movement even during long-term use.

[0066] The low-friction coefficient lubricant is prepared according to the formula and preparation method mentioned in any embodiment of Chinese invention patent CN117186524A, preferably the formula and process of embodiment 8.

[0067] Preferably, an upper baffle plate 17, which is strip-shaped and abuts against the interior trim strip 8, is fixedly connected to the side of the inner guide rail 15 away from the inner waterproof plate 16. A lower baffle plate 27 located below the upper baffle plate 17 is fixedly connected to the lower waterproof guide rail frame. The lower baffle plate 27 also abuts against the interior trim strip 8.

[0068] The upper baffle 17 and the lower baffle 27 are designed to abut against the interior trim strip 8, so that even if water leaks at the connection between the interior trim strip 8 and the upper and lower reinforcing plates 7 and 27, it can still be blocked by the upper baffle 17 and the lower baffle 27 to prevent rainwater from spreading to other structures inside the door.

[0069] Preferably, the interior trim strip 8 has a U-shaped cross-section, and a number of inner lips 9 are fixedly connected to one side of the inner ring of the interior trim strip 8. The interior trim strip 8 clamps and fixes the upper reinforcing plate 7 and the lower reinforcing plate through the number of inner lips 9.

[0070] When the interior trim strip 8 needs to be connected to the upper reinforcing plate 7 and the lower reinforcing plate, the inner lip 9 can clamp the upper reinforcing plate 7 and the lower reinforcing plate, thereby increasing the connection strength of the interior trim strip 8 during installation.

[0071] Preferably, the inner ring of the upper waterproof guide rail frame 4 is fixedly connected to an inner support edge 25 located above the inner bottom surface of the connecting bracket 3, and the inner ring of the inner support edge 25 forms a channel for the slider 18 and the connecting strip 19 to move.

[0072] The inner support edge 25 provides support for the upper waterproof guide rail frame 4.

[0073] Preferably, a guide groove 26 is provided at the upper end of the inner support edge 25 located on the outer ring of the channel, and the cross-sectional area of ​​the groove opening at the guide groove 26 gradually decreases from top to bottom. As a beneficial effect, this arrangement plays a role in automatically centering and guiding the slider 18, ensuring that the glass can smoothly enter the guide track during the descent.

[0074] The guide groove 26 is designed so that when the slider 18 moves downward with the moving glass 1, it can be guided by the guide groove 26, so that the slider 18 can slide more smoothly through the joint connecting the upper connecting rail 5, the connecting bracket 3, and the plastic bracket 2.

[0075] Preferably, the outer upper waterproofing plate 11 includes an arc-shaped outer upper main waterproofing part 12, and the outer lower waterproofing plate 22 includes an arc-shaped outer lower main waterproofing part 23 with the same cross-sectional shape as the outer upper main waterproofing part 12.

[0076] The outer upper waterproof plate 11 also includes an arc-shaped outer upper auxiliary waterproof part 13. The arc length of the outer upper auxiliary waterproof part 13 is less than the arc length of the outer upper main waterproof part 12. The outer lower waterproof plate 22 also includes an arc-shaped outer lower auxiliary waterproof part 24 with the same cross-sectional shape as the outer upper auxiliary waterproof part 13. The cross-section of the outer lower auxiliary waterproof part 24 is the same as the cross-section of the outer upper auxiliary waterproof part 13. Both the outer lower auxiliary waterproof part 24 and the outer upper auxiliary waterproof part 13 are attached to one side of the plastic bracket 2 and the connecting bracket 3.

[0077] Preferably, it also includes a movable glass 1, and the connecting piece 20 is fixedly connected to the movable glass 1 by a sealing strip 21.

[0078] Preferably, the sealing strip 21 can be 3M double-sided tape or a special adhesive.

[0079] After rainwater passes the first seal above the door waistline, it flows downwards along the outer surface of the movable glass 1. Rainwater flowing below the waistline is effectively caught by the arc-shaped waterproof plate formed by the upper outer main waterproof section 12 and the lower outer main waterproof section 23, preventing water droplets from splashing directly onto critical components inside the door, such as the window regulator and door lock. The collected water, under the influence of gravity, is guided in a controlled manner along the overall structural contour of the plastic bracket 2 to the lowest point of the door cavity, and finally discharged outside the vehicle through pre-set drainage holes on the door sheet metal.

[0080] In addition to the arcuate cross-section shown in the attached figures, the outer waterproofing membrane (11, 22) and the inner waterproofing membrane (10) can also be designed with other cross-sectional shapes that provide efficient sealing. For example, they can have hollow “D”, “P”, or tubular cross-sections to provide greater compression stroke and more stable sealing pressure. Alternatively, they can be designed with a structure having two or more flexible sealing lips that form multiple sealing lines when in contact with moving glass, creating a labyrinth seal and further enhancing waterproofing performance.

[0081] As an alternative to sliding contact, the guide assembly can also employ rolling friction. For example, the slider 18 can be replaced with a set of rolling elements, such as miniature rollers or ball bearings, which roll within the inner guide rail 15, thereby changing sliding friction into rolling friction. This significantly reduces motion resistance and is particularly suitable for heavier vehicle window glass.

[0082] In another embodiment, the plastic bracket 2, connecting bracket 3, upper waterproof guide rail frame 4, and lower waterproof guide rail frame in the support assembly do not necessarily need to be multiple independently assembled parts. Instead, they can be manufactured into a single, integral frame structure through injection molding. This design can reduce the number of parts, simplify the assembly process, and lower production costs.

[0083] This invention is applied to zero-surface-difference car doors, ensuring a tight seal between the movable glass 1 and the waterproof membrane, effectively preventing rainwater leakage. During the vertical movement of the movable glass 1, the sliding block 18 slides within the guide rail through the cooperation of the sealing strip 21 and the connecting piece 20, reducing resistance and ensuring smooth movement of the movable glass 1 with minimal jamming. The interior trim strip 8 and the inner waterproof membrane 10 form an integrated structure, enhancing the sealing effect. The separate design of the plastic bracket 2, upper connecting rail 5, and other structures facilitates production and assembly, maintaining the door's airtightness. When the movable glass 1 is submerged below the waistline, even if rainwater leaks in, it is effectively blocked, protecting the door structure and preventing moisture damage.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A zero-surface-difference vehicle door sealing system, characterized in that, include Plastic bracket (2), the plastic bracket (2) is strip-shaped and open on one side along its length direction, and one end of the plastic bracket (2) is integrally formed with a flared connecting bracket (3); Upper waterproof guide rail frame (4), the upper waterproof guide rail frame (4) is embedded in the connecting bracket (3), and an outer upper waterproof plate (11) located below the waistline is fixedly connected to one side of the upper waterproof guide rail frame (4). The lower waterproof guide rail frame is embedded in the plastic bracket (2) and located below the upper waterproof guide rail frame (4). The lower waterproof guide rail frame is fixedly connected to an outer lower waterproof plate (22) located below the outer upper waterproof plate (11) on one side. The upper connecting rail (5) is embedded in the inner ring of the upper waterproof guide rail frame (4) and located above the lower waterproof guide rail frame. An upper reinforcing plate (7) is fixedly connected to one side of the upper connecting rail (5), and a lower reinforcing plate located below the upper reinforcing plate (7) is fixedly connected to the plastic bracket (2). Interior trim strip (8), which is long and is fitted on the outside of the upper reinforcing plate (7) and the lower reinforcing plate. An inner waterproof plate (10) is fixedly connected to the side of the interior trim strip (8) facing the outer upper waterproof plate (11) and the outer lower waterproof plate (22). The inner waterproof membrane (10), the upper outer waterproof membrane (11), and the lower outer waterproof membrane (22) all have elastic deformation properties, and the upper outer waterproof membrane (11), the lower outer waterproof membrane (22), and the inner waterproof membrane (10) allow the movable glass (1) to be displaced.

2. The zero-surface-difference door sealing system according to claim 1, characterized in that, The upper reinforcing plate (7) and the lower reinforcing plate are spaced apart.

3. The zero-surface-difference door sealing system according to claim 1, characterized in that, The upper connecting rail (5) is fixedly connected to a protruding strip (6), and an inner mounting strip (14) that matches the protruding strip (6) is provided inside the upper connecting rail (5). An inner guide rail (15) is fixedly connected to the inner mounting strip (14), and an inner waterproof plate (16) that can be used to contact the end face of the movable glass (1) is fixedly connected to the inner guide rail (15).

4. A zero-surface-difference door sealing system according to claim 3, characterized in that, The inner guide rail (15) is slidably connected to a slider (18) with a circular cross section. A connecting strip (19) is fixedly connected to one side of the slider (18). A sheet-shaped connecting piece (20) is fixedly connected to the side of the connecting strip (19) away from the slider (18). A sealing strip (21) is fixedly connected to the end face of the connecting piece (20). The sealing strip (21) can be used to make fixed contact with the end face of the movable glass (1).

5. A zero-surface-difference door sealing system according to claim 4, characterized in that, The connecting piece (20) is fixedly connected to the movable glass (1) by a sealing strip (21).

6. A zero-surface-difference door sealing system according to any one of claims 3, 4, or 5, characterized in that, The sealing strip (21) and the inner waterproof plate (16) are respectively installed on both sides of the movable glass (1).

7. A zero-surface-difference door sealing system according to claim 3, characterized in that, The inner guide rail (15) is fixedly connected to an upper baffle (17) that is strip-shaped and abuts against the interior trim strip (8) on the side away from the inner waterproof plate (16). The lower waterproof guide rail frame is fixedly connected to a lower baffle (27) located below the upper baffle (17). The lower baffle (27) also abuts against the interior trim strip (8).

8. A zero-surface-difference door sealing system according to claim 1, characterized in that, The interior trim strip (8) has a U-shaped cross section, and a number of inner lips (9) are fixedly connected to one side of the inner ring of the interior trim strip (8). The interior trim strip (8) clamps and fixes the upper reinforcing plate (7) and the lower reinforcing plate through the number of inner lips (9).

9. A zero-surface-difference door sealing system according to claim 1, characterized in that, The inner ring of the upper waterproof guide rail frame (4) is fixedly connected to an inner support edge (25) located above the inner bottom surface of the connecting bracket (3). The inner ring of the inner support edge (25) forms a channel for the slider (18) and the connecting strip (19) to move.

10. A zero-surface-difference door sealing system according to claim 9, characterized in that, A guide groove (26) is provided at the upper end of the inner support edge (25) located on the outer ring of the channel, and the cross-sectional area of ​​the channel opening at the guide groove (26) gradually decreases from top to bottom.

11. A zero-surface-difference door sealing system according to claim 1, characterized in that, The outer upper waterproofing plate (11) includes an arc-shaped outer upper main waterproofing part (12), and the outer lower waterproofing plate (22) includes an arc-shaped outer lower main waterproofing part (23) with the same cross-sectional shape as the outer upper main waterproofing part (12).

12. A zero-surface-difference door sealing system according to claim 11, characterized in that, The outer upper waterproof plate (11) also includes an arc-shaped outer upper auxiliary waterproof part (13), the arc length of which is less than the arc length of the outer upper main waterproof part (12). The outer lower waterproof plate (22) also includes an arc-shaped outer lower auxiliary waterproof part (24) with the same cross-sectional shape as the outer upper auxiliary waterproof part (13). The cross-section of the outer lower auxiliary waterproof part (24) is the same as that of the outer upper auxiliary waterproof part (13). Both the outer lower auxiliary waterproof part (24) and the outer upper auxiliary waterproof part (13) are fitted to one side of the plastic bracket (2) and the connecting bracket (3).

13. A zero-surface-difference door sealing system according to claim 4, characterized in that, The slider (18) has a circular cross-section to achieve low-friction line contact sliding within the inner guide rail (15).

14. A zero-surface-difference door sealing system according to claim 1 or 8, characterized in that, The interior trim strip (8) and the inner waterproof panel (10) are integrally formed to enhance the structural integrity and water tightness of the assembly.

15. A zero-surface-difference door sealing system according to claim 1, characterized in that, The flared design of the connecting bracket (3) forms an inlet ramp for guiding the upper waterproof guide rail frame (4) to be quickly positioned and assembled.

16. A zero-surface-difference door sealing system according to claim 11, characterized in that, It also includes an inner guide rail (15) and an assembly that can slide within the inner guide rail (15), the assembly including a slider (18) with a circular cross section, a connecting piece (20) and a sealing strip (21) for contacting the moving glass (1).

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