Flush Surface Door Seal System for Vehicles

Abstract

In the field of automotive manufacturing technology, a seal system is provided that is applied to a flush surface door structure. The solution includes a plastic bracket (2) and an upper waterproof guide frame. The rod-shaped plastic bracket is open on one side along its length and integrally molded with a connecting bracket (3) with a flared opening at one end. The upper waterproof guide frame is fitted into the connecting bracket. This device is applied to vehicle doors, achieving a high level of sealing by tightly fitting the movable glass (1) to the waterproof plate, preventing rainwater from seeping in. It also reduces the resistance of the movable glass to ensure smooth sliding. The integrated structure of the interior trim (8) and the waterproof plate enhances sealing effectiveness. Furthermore, the separate structure facilitates manufacturing and assembly, while maintaining stable sealing performance throughout the vehicle door and preventing rainwater from diffusing, protecting the interior structure of the door. This solves the problem of rainwater infiltrating through gaps between the movable glass and the guide frame sealing strip, and between the movable glass and the sealing lip, resulting in moisture entering and diffusing into the interior structure of the vehicle door, causing internal moisture.

Description

[Technical Field]

[0001] The present invention relates to the field of automobile manufacturing technology, and more particularly to a sealing system applied to a flush surface door structure. [Background technology]

[0002] In recent years, automotive design has placed emphasis on improving aesthetics and reducing wind noise and air resistance, i.e., improving NVH performance. Accordingly, a key development direction has been the "flush surface" design, which creates a smooth connection between the door glass and the outer door panel without any steps. This design requires that when the door glass is closed, its outer surface form a curved surface that is nearly continuous with the door beltline and the body molding above. To achieve this goal, efforts are being made to improve the precision of glass guides and sealing structures. For example, Chinese Utility Model Patent CN218085033U discloses a flush surface door structure. This patent uses a dual-injection molded slider and rail-shaped sealing strip to precisely control the X and Y movement of the movable glass, eliminating unevenness in the exterior surface and improving the sealing performance of the window frame. This type of technology represents the current mainstream technology level for achieving a "flush surface" exterior and beltline sealing. However, most existing technologies focus only on external waterproofing above the beltline, i.e., on creating a first waterproof barrier, and lack effective means to control water flow below the beltline. In fact, no matter what sealing strip is used at the beltline, some rainwater will inevitably cross the first sealing line and enter the door under conditions such as long-term use, high-pressure washing, or heavy rain. This rainwater will then penetrate the interior of the door along the glass surface and may stagnate or spread within the interior space. If left uncontrolled, this water flow can cause serious problems, including: Exposing electronic and mechanical components such as window regulator motors, door locks, speakers, and wiring harnesses to moisture and humidity can lead to corrosion, short circuits, and malfunctions, posing safety concerns. Moisture can also penetrate door trim boards, causing mold, deformation, and unpleasant odors, significantly compromising the interior environment and passenger comfort. Furthermore, sheet metal components at the bottom of the door can corrode prematurely, reducing the overall durability of the door. Therefore, an urgent challenge in the art is to provide a vehicle door seal system that allows for a flush surface door design, while effectively controlling and blocking secondary water flow that penetrates beyond the first primary seal strip below the beltline, providing a reliable seal and stable guidance for the lower half of the main window glass, and completely protecting the precision components inside the door from moisture. Summary of the Invention

[0003] The purpose of this invention is to overcome the problem that the conventional technology has insufficient management of water flow that infiltrates below the belt line, which damages functional components such as window regulators and door locks, as well as trim boards, and reduces the reliability and durability of the door.

[0004] Therefore, the present invention adopts the following technical configuration. A flush surface door seal system for a vehicle, comprising: Plastic bracket: It is rod-shaped, has one side open in the longitudinal direction, and has a connecting bracket integrally molded at one end with a widened opening. Upper waterproof guide frame: An outer upper waterproof board is fitted into the connecting bracket and is fixed to one side below the belt line. Bottom waterproof guide frame: It is fitted into a plastic bracket and is located below the upper waterproof guide frame. One side of it is fixed to the outer lower waterproof board, which is located below the outer upper waterproof board. Upper connecting rail: It is fitted to the inner periphery of the upper waterproof guide frame and is installed above the lower waterproof guide frame. An upper reinforcement plate is fixedly connected to one side, and a lower reinforcement plate located below the upper reinforcement plate is fixed onto the plastic bracket. Interior trim parts: It is strip-shaped and is arranged to cover the outside of the upper reinforcement plate and the lower reinforcement plate, and the inner waterproof plate is fixedly connected to the outer upper waterproof plate and the outer lower waterproof plate side. The inner waterproof board, the outer upper waterproof board and the outer lower waterproof board all have elastic deformation properties, which allow the insertion and movement of the movable glass. Preferably, a spacing region is provided between the upper and lower reinforcing plates. Preferably, an engaging rib is fixedly connected to the upper connecting rail, an insert strip that fits the engaging rib is provided within the upper connecting rail, an inner guide rail is fixedly connected to the insert strip, and an inner waterproof plate that comes into contact with the end surface of the movable glass is fixedly connected to the inner guide rail. Preferably, a slider having a circular cross section is slidably mounted within the inner guide rail, a connecting strip is fixedly connected to one side of the slider, a plate-shaped connecting plate is fixedly connected to the side of the connecting strip away from the slider, a sealing member is fixedly connected to an end surface of the connecting plate, and the sealing member is adhesively fixed to the end surface of the movable glass. Preferably, the connecting plate is fixedly connected to the movable glass via a sealing member. Preferably, the sealing member and the inner waterproof plate are provided on both sides of the movable glass, respectively. Preferably, a strip-shaped upper waterproof plate that abuts against the interior trim member is fixedly connected to the side of the inner guide rail away from the inner waterproof plate, and a lower waterproof plate located below the upper waterproof plate is fixedly connected to the lower waterproof guide frame, and the lower waterproof plate also abuts against the interior trim member. Preferably, the interior trim member has a U-shaped cross section and a plurality of lips on the inside, and the upper and lower reinforcing plates are clamped and fixed by the lips. Preferably, an inner support edge is fixedly connected to the inner periphery of the upper waterproof guide frame above the inner bottom surface of the connecting bracket, and the inner periphery of the inner support edge forms a passage for the slider and the connecting strip to move. Preferably, a guide groove is provided at the upper end of the inner support edge on the outer periphery of the passage, and the opening area of ​​the passage in the guide groove is structured to gradually narrow from top to bottom. Preferably, the outer upper waterproofing board has an arc-shaped outer upper main waterproofing section, and the outer lower waterproofing board has an outer lower main waterproofing section having the same cross-sectional shape as the outer upper main waterproofing section. Preferably, the outer upper waterproof board is provided with an arc-shaped outer upper auxiliary waterproof section, the arc length of which is shorter than that of the outer upper main waterproof section, the outer lower waterproof board is provided with an outer lower auxiliary waterproof section having the same cross-sectional shape as the outer upper auxiliary waterproof section, and the outer lower auxiliary waterproof section and the outer upper auxiliary waterproof section are arranged in close contact with one side of the plastic bracket and the connecting bracket. Preferably, the slider has a circular cross section, which minimizes the contact area within the inner guide rail, allowing the slider to slide smoothly in a line contact state with low frictional resistance. Preferably, the interior trim member and the interior watertight board are of one piece construction to improve structural integrity and watertightness. Preferably, the widened opening shape of the connecting bracket forms a guide slope for quickly and accurately positioning and mounting the upper waterproof guide frame. Preferably, there is provided an inner guide rail and an assembly slidable within said inner guide rail, said assembly including a slider of circular cross section, a connecting plate, and a seal member for contacting the movable glass.

[0005] Compared with the prior art, the advantages of the present invention are as follows: 1. When the movable glass is lowered below the belt line, it is completely contained within the guide passage made up of the inner waterproof board, outer upper waterproof board, and outer lower waterproof board. This structure effectively receives, blocks, and directs water that flows in along the glass or guide rails, and then drains it orderly to the bottom of the door. This prevents corrosion and damage to parts caused by the diffusion of water flow, and keeps the inside of the door dry at all times. 2. By giving the slider a circular cross-sectional structure, conventional surface friction is converted into sliding by line contact, reducing the movement resistance when the glass is raised and lowered. As a result, the operation is smooth and free of sticking or noise.The waterproof boards and sealing strips on both the inside and outside of the door seal the glass with an elastic clamp, achieving an excellent sealing effect. 3. The integrated structure of the interior trim and the interior waterproof board eliminates the assembly gaps that can occur with conventional separate structures and forms a more complete and reliable sealing interface at the contact point with the movable glass. This, combined with the multi-layer waterproof board structure, improves the sealing performance and durability of the entire vehicle. [Brief explanation of the drawings]

[0006] In order to more clearly explain the technical solutions of the present invention, the following will refer to and explain the drawings in a clear and understandable manner. Obviously, the following drawings are only some embodiments of the present invention, and do not limit the protection scope of the present invention, and those skilled in the art can derive other drawing structures based on these drawings without any creative efforts. [Figure 1] FIG. 1 is a schematic diagram of the present invention. [Figure 2] FIG. 2 is a first cross-sectional view of the present invention. [Figure 3] FIG. 3 is an enlarged view of part A in FIG. [Figure 4] FIG. 4 is a second cross-sectional view of the present invention. [Figure 5] FIG. 5 is an enlarged view of part B in FIG. [Figure 6] FIG. 6 is a schematic diagram of the plastic bracket, waterproof guide frame, outer upper waterproof board and outer lower waterproof board according to the present invention. [Figure 7] FIG. 7 is an enlarged view of part C in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0007] The technical means in the embodiments of the present invention will be described clearly and completely below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. The embodiments described herein are merely examples of the present invention and do not limit the scope of the invention. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative ingenuity fall within the scope of protection of the present invention. The "fixed connection" between the components of the present invention can be achieved by a variety of means commonly known to those skilled in the art, including, but not limited to, adhesive bonding, ultrasonic welding, connections using mechanical fasteners such as interlocking structures or screws, or integral molding using processes such as co-extrusion.

[0008] The flush surface door seal system for a vehicle of the present invention, as shown in FIGS. 1 to 7, includes the following components: Plastic bracket 2: A rod-shaped connecting bracket 3 is integrally molded, with one side open in the longitudinal direction and one end having a widened opening. Upper waterproof guide frame 4: An outer upper waterproof board 11 is fitted into the connecting bracket 3 and is fixed to one side thereof, the outer upper waterproof board 11 being arranged below the belt line. Bottom waterproof guide frame: It is fitted into the plastic bracket 2 and is located below the upper waterproof guide frame 4. An outer lower waterproof board 22, which is arranged below the outer upper waterproof board 11, is fixed to one side. Upper connecting rail 5: It is fitted onto the inner periphery of the upper waterproof guide frame 4 and is installed above the lower waterproof guide frame. An upper reinforcement plate 7 is fixedly connected to one side, and a lower reinforcement plate located below the upper reinforcement plate 7 is fixed onto the plastic bracket 2. Preferably, a spacer region is provided between the upper and lower reinforcing plates along the longitudinal direction to reduce the amount of material used while maintaining structural strength. Interior trim part 8: The strip-shaped panel is arranged to cover the outside of the upper reinforcement plate 7 and the lower reinforcement plate, and the inner waterproof plate 10 is fixedly connected to the outer upper waterproof plate 11 and the outer lower waterproof plate 22. The inner waterproof plate 10 has the same length as the interior trim member 8. The inner waterproof board 10, the outer upper waterproof board 11, and the outer lower waterproof board 22 all have elastic deformation properties, allowing the movable glass 1 to be inserted and moved.

[0009] Preferably, components that come into direct contact with the movable glass 1 to achieve a seal, such as the interior waterproofing board 10, the exterior upper waterproofing board 11, the exterior lower waterproofing board 22, and the inner waterproofing board 6, are made of an elastomer that has excellent weather resistance, ozone resistance, and elasticity. An example is EPDM rubber (ethylene propylene diene monomer), which exhibits excellent durability in vehicle sealing. Considering the balance between sealing performance and sliding friction, EPDM rubber with a Shore A hardness of 40 to 90 (e.g., 70±5) is suitable. Furthermore, thermoplastic elastomers (TPE) and polyvinyl chloride (PVC) can also be used as alternative materials. The plastic bracket 2 and connecting bracket 3 are installed inside the door, positioned below the beltline. They support and secure other structural components, while also catching and draining rainwater. The upper waterproof guide frame 4 is primarily a structure for supporting and connecting other components. The upper connecting rail 5 is connected to the plastic bracket 2 and connecting bracket 3 via the upper waterproof guide frame 4. The upper end of the lower waterproof board 22 is extended by adding an outer upper waterproof board 11, so that its upper end reaches the upper end of the connecting bracket 3. This prevents water leakage into the movable glass 1 at the connection between the upper connecting rail 5 and the connecting bracket 3. The elastic edges of the outer upper waterproof board 11 and the outer lower waterproof board 22 on the upper waterproof guide frame 4 and lower waterproof guide frame lightly contact the outer surface of the glass, preventing rainwater from flowing between the movable glass 1 and the guide. The widened mouth shape of the connecting bracket 3 is a typical error-proofing and easy-assembly design, and forms a guide entrance for fast and accurate fitting of the upper waterproof guide frame 4. The interior trim member 8 and the interior waterproof board 10 fixed thereto cooperate with the exterior upper waterproof board 11 and the exterior lower waterproof board 22 to block rainwater from entering between the movable glass 1 and the guide, preventing it from diffusing into the interior of the door. Furthermore, when the movable glass 1 is closed, it seals the gap between the glass and the window frame, ensuring an excellent sealing effect. The integral structure of the interior trim member 8 and the interior waterproof board 10 can be manufactured by co-extrusion, and prevents contamination of the vehicle interior panel even under extreme conditions of moisture intrusion. 3 and 5, an engaging rib 6 is fixedly connected to the inside of the upper connecting rail 5, and an insert strip 14 that fits the cross section of the engaging rib 6 is provided inside the upper connecting rail 5. An inner guide rail 15 is fixedly connected to the insert strip 14, and an inner waterproof board 6 that comes into contact with the end face of the movable glass 1 is fixedly connected to the inner guide rail 15. The provision of the engaging rib 6 improves the connection strength when the inserting strip 14 is connected to the upper connecting rail 5, enabling stable installation. The inner guide rail 15 has a guiding function for guiding the movement of the slider 18, and the inner waterproof board 6 fixed to the inner guide rail 15 additionally provides the function of preventing rainwater from entering the movable glass 1.

[0010] Preferably, a slider 18 having a circular cross section is slidably mounted within the inner guide rail 15. A connecting strip 19 is fixedly connected to one side of the slider 18, and a plate-shaped connecting plate 20 is fixedly connected to the side of the connecting strip 19 away from the slider 18, with a sealing member 21 fixedly connected to the end face of the connecting plate 20. The sealing member 21 is adhesively fixed to the end face of the movable glass pane 1. The sealing member 21 and the inner waterproof plate 6 are respectively mounted on both sides of the movable glass pane 1. The circular cross section of the slider 18 minimizes the contact area within the inner guide rail 15, reducing sliding resistance and allowing smooth sliding when following the movable glass 1. The sealing member 21 enhances the fixed connection effect with the end face of the movable glass 1. Furthermore, lifting resistance can be reduced and noise can be suppressed by applying a low-friction coating to the inner guide rail 15 and slider 18. This coating can be made of a lubricating material with a low friction coefficient, such as PTFE (polytetrafluoroethylene) coating or MoS2 (molybdenum disulfide) coating, and can maintain smooth sliding of the slider even over long periods of use. The low friction coefficient lubricating material is prepared according to the formulation and manufacturing method of any of the examples described in Chinese Patent Publication No. CN117186524A, preferably according to the formulation and manufacturing method of Example 8 of the same patent.

[0011] Preferably, a strip-shaped upper waterproof board 17 that abuts against the interior trim member 8 is fixedly connected to the side of the inner guide rail 15 away from the inner waterproof board, and a lower waterproof board 27 located below the upper waterproof board is provided on the lower waterproof guide frame. The lower waterproof board also abuts against the interior trim member 8. The upper waterproof plate 17 and the lower waterproof plate 27 can prevent rainwater from diffusing into the interior of the door even if rainwater leaks at the connection between the interior trim member 8 and the upper reinforcing plate 7 and the lower reinforcing plate. Preferably, the interior trim member 8 has a U-shaped cross section and a plurality of lips 9 on the inside, and the upper reinforcing plate 7 and the lower reinforcing plate are clamped and fixed by the lips 9. This improves the attachment strength of the interior trim member 8. Preferably, an inner support edge 25 is fixedly connected to the inner periphery of the upper waterproof guide frame 4 above the inner bottom surface of the connecting bracket 3, and the inner periphery of the inner support edge 25 forms a passage for the slider 18 and the connecting strip 19 to move. The inner support edge 25 can reliably support the upper waterproof guide frame 4. Preferably, a guide groove 26 is provided at the upper end of the inner support edge 25 on the outer periphery of the passage, and the passage opening area of ​​the guide groove 26 is structured so as to gradually narrow from top to bottom. With this structure, the slider 18 is automatically aligned and guided, and is smoothly inserted into the guide frame as the movable glass 1 descends. In other words, by installing the guide groove 26, when the slider 18 moves downward following the descent of the movable glass 1, it is guided by the guide groove 26, allowing the slider 18 to pass more smoothly through the joint between the upper connecting rail 5, the connecting bracket 3 and the plastic bracket 2.

[0012] Preferably, the outer upper waterproof board 11 has an arc-shaped outer upper main waterproof section 12 , and the outer lower waterproof board 22 has an outer lower main waterproof section 23 having the same cross-sectional shape as the outer upper main waterproof section 12 . Furthermore, the outer upper waterproof board 11 is provided with an arc-shaped outer upper auxiliary waterproof section 13, the arc length of which is shorter than that of the outer upper main waterproof section 12. The outer lower waterproof board 22 is provided with an outer lower auxiliary waterproof section 24 having the same cross-sectional shape as the outer upper auxiliary waterproof section 13. The outer lower auxiliary waterproof section 24 and the outer upper auxiliary waterproof section 13 are arranged in close contact with one side of the plastic bracket 2 and the connecting bracket 3. Preferably, the device includes a movable glass 1, and the connecting plate 20 is fixedly connected to the movable glass 1 via a sealing member 21. Preferably, the sealing member 21 can be made of 3M double-sided adhesive tape or a special adhesive. When rainwater crosses the first waterproof line above the door beltline, it flows downward along the outer surface of the movable glass 1. Rainwater below the beltline is effectively captured by the arc-shaped waterproof plate made up of the outer upper main waterproof section 12 and the outer lower main waterproof section 23, preventing it from splashing directly onto important components such as the window regulator and door lock. The collected water is guided by gravity in a controlled path along the contour of the plastic bracket 2, and is finally discharged to the outside through drainage holes in the gate metal. The outer waterproof boards (11, 22) and the inner waterproof board (10) can be designed with shapes that achieve high-efficiency sealing, such as hollow D-shaped, P-shaped, and tubular cross sections, in addition to the arc-shaped cross section shown in the drawings. Multiple flexible sealing lips can be provided to form a labyrinth seal in contact with the movable glass, further improving waterproof performance.

[0013] As an alternative to the sliding structure, a rolling method can also be adopted. For example, by replacing the slider 18 with a micro roller or ball bearing and rolling it within the inner guide frame 15, sliding friction can be changed to rolling friction, significantly reducing movement resistance. This is particularly suitable for heavy car window glass. As another example, the plastic bracket 2, connecting bracket 3, upper waterproof guide frame 4, and lower waterproof guide frame that make up the support structure can be integrally molded by injection molding rather than being assembled from multiple parts. This configuration reduces the number of parts, simplifies the assembly process, and reduces manufacturing costs. This device is applicable to flush-surface doors, and the tight fit between the movable glass 1 and waterproof plate ensures an excellent seal and prevents rainwater from seeping in. When the movable glass 1 moves up and down, the seal member 21 and connecting plate 20 work together to allow the slider 18 to slide within the guide frame, reducing resistance and ensuring smooth movement. The integrated structure of the interior trim member 8 and the interior waterproof plate 10 enhances the sealing effect, and the separate structure of the plastic bracket 2 and upper connecting rail 5 facilitates manufacturing and assembly while maintaining the gate's sealing ability. Even when the movable glass 1 is located below the beltline, rainwater is effectively blocked, protecting the door structure and preventing damage from moisture.

[0014] The above is only a preferred embodiment of the present invention, and does not limit the present invention. Those skilled in the art can make various modifications and changes based on the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. [Explanation of symbols]

[0015] 1 Movable Glass 2 plastic brackets 3 Connecting bracket 4 Upper waterproof guide frame 5 Upper connecting rail 6 Engagement rib 7 Upper reinforcement plate 8 Interior trim materials 9 Lip 10 Inner waterproof board 11 Upper outer waterproof board 12 Upper outer main waterproof section 13 External auxiliary waterproof section 14 Inset Strip 15 Inner guide rail 16 Inner waterproof board 17 Upper waterproof board 18 Slider 19 Connection Strips 20 Connection plate 21 Sealing material 22 Lower outer waterproof board 23 Lower main waterproof part 24 Lower outer auxiliary waterproof part 25 Inner support edge 26 Guide groove 27 Lower waterproof board

Claims

1. A flush surface door seal system for a vehicle, comprising a plastic bracket (2), an upper waterproof guide frame (4), a lower waterproof guide frame, an upper connecting rail (5), and an interior trim member (8), The plastic bracket (2) A rod-shaped connecting bracket (3) is integrally molded, with one side open in the longitudinal direction and one end having a widened mouth. The upper waterproof guide frame (4) is An outer upper waterproof board (11) is fitted into the connecting bracket (3) and fixed to one side below the belt line. The lower waterproof guide frame It is fitted into the plastic bracket (2) and is located below the upper waterproof guide frame (4), and an outer lower waterproof board (22) arranged below the outer upper waterproof board (11) is fixed to one side. The upper connecting rail (5) It is fitted to the inner periphery of the upper waterproof guide frame (4) and is installed above the lower waterproof guide frame, with an upper reinforcement plate (7) fixed to one side, and a lower reinforcement plate located below the upper reinforcement plate (7) is fixed onto the plastic bracket (2). The interior trim member (8) The strip-shaped reinforcement plate is arranged to cover the outside of the upper reinforcement plate (7) and the lower reinforcement plate, and the inner waterproof plate (10) is fixedly connected to the outer upper waterproof plate (11) and the outer lower waterproof plate (22). The inner waterproof board (10), the outer upper waterproof board (11), and the outer lower waterproof board (22) all have elastic deformation properties, allowing the insertion and movement of the movable glass (1). A flush surface door seal system for a vehicle, comprising:

2. 2. The flush surface door seal system for a vehicle according to claim 1, wherein a spacing area is provided between the upper and lower reinforcing plates.

3. An engaging rib (6) is fixedly connected to the upper connecting rail (5), a fitting strip (14) that fits the engaging rib (6) is provided in the upper connecting rail (5), an inner guide rail (15) is fixedly connected to the fitting strip (14), and an inner waterproof board (16) that comes into contact with the end surface of the movable glass (1) is fixedly connected to the inner guide rail (15).

10. The flush surface door seal system for a vehicle according to claim 1.

4. A slider (18) having a circular cross section is slidably provided within the inner guide rail (15), a connecting strip (19) is fixedly connected to one side of the slider (18), a plate-shaped connecting plate (20) is fixedly connected to the side of the connecting strip (19) away from the slider (18), a sealing member (21) is fixedly connected to the end face of the connecting plate (20), and the sealing member (21) is adhesively fixed to the end face of the movable glass 1.

4. The flush surface door seal system for a vehicle according to claim 3.

5. 5. The flush surface door seal system for a vehicle according to claim 4, wherein the connecting plate (20) is fixedly connected to the movable glass (1) through a sealing member (21).

6. 6. A flush surface door seal system for a vehicle according to claim 3, claim 4 or claim 5, characterized in that the seal member (21) and the inner waterproof board (16) are respectively provided on both sides of the movable glass (1).

7. A strip-shaped upper waterproof board (17) that abuts against the interior trim member (8) is fixedly connected to the side of the inner guide rail (15) away from the inner waterproof board (16), and a lower waterproof board (27) located below the upper waterproof board (17) is provided on the lower waterproof guide frame, and the lower waterproof board (27) also abuts against the interior trim member (8).

4. The flush surface door seal system for a vehicle according to claim 3.

8. The interior trim member (8) has a U-shaped cross section and a plurality of lips (9) on the inside, and the upper reinforcing plate (7) and the lower reinforcing plate are clamped and fixed by the lips (9).

10. The flush surface door seal system for a vehicle according to claim 1.

9. An inner support edge (25) is fixedly connected to the inner periphery of the upper waterproof guide frame (4) above the inner bottom surface of the connecting bracket (3), and the inner periphery of the inner support edge (25) forms a passage for the slider (18) and the connecting strip (19) to move.

10. The flush surface door seal system for a vehicle according to claim 1.

10. A guide groove (26) is provided at the upper end of the inner support edge (25) on the outer periphery of the passage, and the passage opening area in the guide groove (26) is structured to gradually narrow from top to bottom.

10. The flush surface door seal system for a vehicle according to claim 9.

11. The outer upper waterproof board (11) has an arc-shaped outer upper main waterproof part (12), and the outer lower waterproof board (22) has an outer lower main waterproof part (23) having the same cross-sectional shape as the outer upper main waterproof part (12).

10. The flush surface door seal system for a vehicle according to claim 1.

12. The outer upper waterproof board (11) is provided with an arc-shaped outer upper auxiliary waterproof part (13), the arc length of which is shorter than that of the outer upper main waterproof part (12), the outer lower waterproof board (22) is provided with an outer lower auxiliary waterproof part (24) having the same cross-sectional shape as the outer upper auxiliary waterproof part (13), and the outer lower auxiliary waterproof part (24) and the outer upper auxiliary waterproof part (13) are arranged in close contact with one side of the plastic bracket (2) and the connecting bracket (3).

12. The flush surface door seal system for a vehicle according to claim 11,

13. By making the slider (18) circular in cross section, the contact area within the inner guide rail (15) is minimized, allowing it to slide smoothly in a line contact state with low friction resistance.

5. The flush surface door seal system for a vehicle according to claim 4.

14. 10. A flush surface door seal system for a vehicle as described in claim 1 or claim 8, wherein the interior trim member (8) and the interior waterproof board (10) are integrally molded to improve structural integrity and watertightness.

15. The connecting bracket (3) has a widened mouth shape, and a guide slope is formed to quickly and accurately position and attach the upper waterproof guide frame (4).

10. The flush surface door seal system for a vehicle according to claim 1.

16. The device comprises an inner guide rail (15) and an assembly slidable within the inner guide rail (15), the assembly including a slider (18) of circular cross section, a connecting plate (20), and a sealing member (21) for contacting the movable glass (1).

12. The flush surface door seal system for a vehicle according to claim 11,

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