Asymmetrically guided zero-clearance sealing system, vehicle door and vehicle

Abstract

Provided in the present application is a sealing system, comprising a sealing strip and a sliding mechanism accommodated in the inner cavity of the sealing strip. The sliding mechanism has different geometric configurations on sections arranged along different vehicle door pillars, thus forming at least one guiding reference side and one flexible compensation side within the system. On the guiding reference side, the sliding mechanism is provided with a first positioning protrusion to form a fit with the inner cavity of the sealing strip, so as to restrict lateral displacement of glass; on the flexible compensation side, the sliding mechanism uses a compact profile and / or tolerance-absorbing end to form a preset compensation gap with the inner cavity of the sealing strip, so as to absorb system tolerances. Said sealing system is mounted on a vehicle door, and the vehicle door is applied to a vehicle. By means of the asymmetric design, the present application achieves a combined effect of reliable sealing and high-quality appearance without compromising sealing performance.

Description

An asymmetric-guided zero-step sealing system, car doors, and automobiles Technical Field

[0001] This application relates to the field of automotive parts technology, specifically to an asymmetric guided zero-step sealing system. Background Technology

[0002] In modern automotive design, "zero-step difference" or "flat design" has become a key indicator for measuring the overall appearance quality and aerodynamic performance of a vehicle. It requires that when the window glass is closed, its outer surface can form a smooth, continuous flat plane with the surrounding door pillars, exterior trim panels, etc., in order to achieve the best aesthetic effect and the lowest wind resistance.

[0003] To achieve this goal and adapt to the trends of lightweight and modular automotive design, the structure of window regulators is constantly evolving. Compared to the complex and space-consuming traditional dual-rail lifting systems, the simpler and more compact single-rail lifting systems are increasingly widely used. However, while single-rail systems offer structural advantages, they also introduce inherent technical challenges. Because only a single mechanical rail provides support, the glass is highly susceptible to uneven lateral forces (such as friction from the sealing strip, changes in airflow pressure, etc.) during lifting, resulting in a tilting torque. This causes dynamic positional deviations such as swaying and tilting during movement, directly threatening the achievement of the "zero-step difference" target.

[0004] To address the stability issues of single-rail lifting systems and manage unavoidable manufacturing and assembly tolerances in door systems, existing technologies primarily attempt to provide stronger frame support by enhancing the overall rigidity of the glass guide channel sealing strip. This can be achieved by embedding a metal or rigid plastic skeleton within the sealing strip, or by using the sealing strip to subtly wrap the sliding column. However, such global reinforcement solutions often lead to a decrease in the overall elasticity of the sealing strip. This not only increases the friction between the sealing strip and the glass, increasing the load on the lifting motor, but also increases the installation difficulty of the sealing strip and sliding mechanism. Furthermore, it can only passively withstand dynamic, directional positional deviations, which accelerates wear on the sealing strip over long-term use.

[0005] Another technical solution in the industry involves tolerance-tolerant design at the sealing system design level. This approach, to prevent interference between the glass and the sealing strip due to swaying or tilting during movement, typically employs a strategy of increasing the geometric clearance in the glass guide channel design. That is, by making the guide channel accommodating the glass edge wider, a physical buffer is provided for dynamic positional deviations of the glass and cumulative tolerances of the system. However, this method of sacrificing precision for smoothness inevitably means a comprehensive decline in sealing performance. It directly undermines the pre-compression necessary for a reliable seal between the sealing lip and the glass surface, potentially leading to a series of serious NVH (noise, vibration, and harshness) performance issues throughout the entire window area, such as increased wind noise and rainwater leakage at high speeds. This is unacceptable in the high-end automotive market, which prioritizes driving comfort.

[0006] Furthermore, as consumers' demands for the sensory quality of automobiles continue to rise, the aesthetic details of the sealing system are also receiving considerable attention. In existing sealing systems, the sliding mechanism undergoes high-frequency up-and-down movement within the sealing strip's inner cavity, inevitably leading to friction marks or wear and whitening on the inner cavity walls (especially the wear-resistant coating). When the car window is fully lowered, the user's view can see deep into the inner cavity through the sealing strip opening, and these exposed wear marks significantly reduce the overall visual premium feel of the vehicle. How to ensure smooth sliding while maintaining a clean and consistent appearance of the sealing strip's inner cavity throughout its entire lifespan is another problem that current technology has not yet adequately solved.

[0007] In summary, existing technologies face a dilemma: ensuring the dynamic stability of the glass lifting mechanism requires sacrificing sealing performance; conversely, ensuring sealing performance makes it difficult to effectively manage the dynamic deviations and cumulative tolerances generated by a single guide rail system. Therefore, fundamentally breaking through this technological bottleneck and providing an innovative solution that achieves both precise guidance and tolerance management while guaranteeing sealing performance has become a pressing technical challenge for those skilled in the art. Summary of the Invention

[0008] An asymmetric guided zero-step sealing system, comprising:

[0009] A sealing strip that defines an internal cavity;

[0010] A sliding mechanism is slidably accommodated in the internal cavity of the sealing strip and used for fixed connection with the vehicle window glass;

[0011] The sliding mechanism forms at least one guide reference side and one flexible compensation side within the sealing system.

[0012] On the guide reference side, the sliding mechanism and the inner cavity of the sealing strip form a precise fit in at least one lateral dimension to control the lateral gap between the sliding mechanism and the inner cavity within a preset small range, thereby limiting the lateral displacement of the window glass.

[0013] On the flexible compensation side, there is a preset compensation gap between the sliding mechanism and the internal cavity of the sealing strip to absorb tolerances.

[0014] Furthermore, the sliding mechanism is equipped with at least two different types of sliders in different sections; wherein, the guide slider disposed on the guide reference side is integrally formed with a first positioning protrusion to reduce the lateral gap between it and the internal cavity.

[0015] Furthermore, the sliding mechanism is equipped with at least two different types of sliders in different sections; wherein, the main body contour of the compensation slider disposed on the flexible compensation side is designed to form the preset compensation gap between the compensation slider and the internal cavity.

[0016] The section refers to the reference side and the flexible compensation side.

[0017] Furthermore, the sliding mechanism includes at least two different sliders; wherein, the guide slider disposed on the guide reference side is integrally formed with a first positioning protrusion to reduce the lateral gap between it and the internal cavity.

[0018] Furthermore, the sliding mechanism includes at least two different types of sliders; wherein,

[0019] The compensation slider disposed on the flexible compensation side has its main body contour designed to form the preset compensation gap between the compensation slider and the internal cavity.

[0020] Furthermore, the compensation slider also has a tolerance absorption head, on which at least one gap forming surface is formed, which is configured to form the preset compensation gap between the tolerance absorption head and the internal cavity.

[0021] Furthermore, the sliding mechanism includes a sliding column with an elliptical cross-sectional shape and its major axis arranged along the Y direction to accommodate the height of the internal cavity being pulled up in the Y direction and to provide guiding support.

[0022] Furthermore, the sealing strip has a uniform cross-sectional shape on both the guide reference side and the flexible compensation side.

[0023] Furthermore, an inwardly extending shielding portion is integrally formed on the inner wall of the sealing strip; the shielding portion is located on one side of the inner cavity opening and is configured to be suspended above the sliding contact area between the sliding mechanism and the inner wall of the sealing strip, so as to shield the wear marks on the inner wall caused by sliding friction.

[0024] Furthermore, the sliding mechanism has a clearance notch on its main body contour; when the sliding mechanism is accommodated in the internal cavity of the sealing strip, the blocking part extends at least partially into the clearance notch, and the blocking part and the sliding mechanism form a non-contact fit or elastic contact fit.

[0025] Furthermore, the sliding mechanism also includes a first auxiliary support protrusion; the first auxiliary support protrusion is located at the bottom of the sliding mechanism and is configured to abut against the bottom of the inner cavity of the sealing strip to restrict the torsion of the sliding mechanism about its longitudinal axis and transfer the sliding support force of the sliding mechanism mainly to the bottom of the inner cavity, thereby maintaining the relative position between the blocking part and the avoidance notch.

[0026] Furthermore, both the sliding mechanism on the guide reference side and the sliding mechanism on the flexible compensation side are provided with the clearance notch for accommodating the obstruction portion; wherein, the clearance notch on the sliding mechanism on the flexible compensation side has a preset lateral width to allow the sliding mechanism to float laterally relative to the obstruction portion to absorb tolerances.

[0027] Furthermore, the system also includes a guide rail for mounting the sealing strip, and the inner wall of the guide rail is provided with an inwardly protruding limiting rib;

[0028] The outer side of the sealing strip is provided with a fifth lip extending outward;

[0029] When the sealing strip is installed in the guide rail, the fifth lip extends past the limiting rib and is engaged in the groove behind the limiting rib, forming a snap-fit ​​with the limiting rib.

[0030] Furthermore, a through hole extending longitudinally is provided at the corner of the sealing strip;

[0031] A fiberglass rope is provided inside the through hole to inhibit the longitudinal elongation of the sealing strip;

[0032] Meanwhile, the through hole constitutes the folding hinge point of the sealing strip during the forming process.

[0033] Furthermore, the sealing strip also includes:

[0034] A corrugated area is provided in the neck area where the sealing strip body is connected to an appearance decoration structure, and its surface is wavy or serrated.

[0035] Several sealing ribs are provided on the lower surface of the sealing strip body for overlapping the guide rail extension platform, in order to create an air gap between the sealing strip and the extension platform.

[0036] Furthermore, the bottom outer side of the sealing strip is provided with a first lip, the first lip including an outer support lip and an inner load adjusting lip;

[0037] The inner load adjusting lip is shorter than the outer support lip to balance the force on the bottom of the sealing strip and prevent it from warping.

[0038] Furthermore, the sliding mechanism also includes a second auxiliary support protrusion; the second auxiliary support protrusion is disposed on the lower surface of the sliding column connection portion of the sliding mechanism, and the protrusion direction is towards the upper wall surface of the inner cavity of the sealing strip; it is used to abut against the upper wall surface when the sealing strip is deformed to prevent the sealing strip body from floating up.

[0039] Furthermore, the bottom of the sealing strip is constructed as a flat-bottomed support structure; at least one support portion is provided on the bottom surface of the sealing strip, and the support portion is constructed to directly support the bottom surface of the guide rail; and the bottom of the guide rail is a flat plane, and the outer side of the bottom of the sealing strip does not include a lip structure extending downward into the groove of the guide rail.

[0040] Furthermore, the sealing strip also includes an appearance decorative structure, which is selected from:

[0041] A hollow decorative bubble tube; or

[0042] A cantilevered decorative lip with no rigid support.

[0043] Furthermore, the sealing strip also includes at least one main sealing lip and one auxiliary sealing lip; wherein the auxiliary sealing lip is configured as follows:

[0044] Before the sliding mechanism reaches its longitudinal position, it elastically abuts against the surface of the vehicle window glass;

[0045] Furthermore, when the sliding mechanism reaches its longitudinal position, it is forced by the contour of the sliding mechanism to undergo elastic deformation and then forms a sliding contact with the lower surface of the sliding mechanism.

[0046] Furthermore, the sealing strip also includes an integrally formed extended functional structure, the extended functional structure being selected from at least one of the following groups:

[0047] A C-shaped encapsulation cavity for shielding and sealing the ends of the door sheet metal;

[0048] A structural interface for forming an overlap or snap-fit ​​engagement with the end of the interior trim panel; and

[0049] A sixth lip, which works in conjunction with a portion of the main sealing lip, is used to clamp the interior panel from above and below.

[0050] Furthermore, the guiding reference side corresponds to the B-pillar of the door, and the flexible compensation side corresponds to the A-pillar or C-pillar of the door.

[0051] A vehicle door comprising any of the asymmetric-guided zero-step sealing systems described above.

[0052] An automobile, including the aforementioned door. Beneficial effects

[0053] 1. This application defines one side of the car door (such as the B-pillar) as the guide reference side and uses a slider with a special first positioning protrusion to reduce the wobbling space of the sliding mechanism, thereby suppressing the wobbling of the glass.

[0054] 2. This application defines the other side of the door (such as the A-pillar / C-pillar) as the flexible compensation side and uses a slider with a tolerance-absorbing head to create a compensation gap for floating. This design can effectively absorb and compensate for all accumulated tolerances from component manufacturing, vehicle assembly, and dynamic movement, ensuring that the glass can still rise and fall smoothly and stably even under tolerance fluctuations, avoiding rigid interference.

[0055] 3. Because the tolerance absorption function of this application is achieved through the special design of the slider, it will not cause wobbling due to the increase in the gap of the sealing strip. This allows the sealing lip to always maintain a tight fit with the glass and guide rail, fundamentally solving the NVH problems such as wind noise and water leakage in traditional solutions, and significantly improving the comfort and quietness of the ride.

[0056] 4. The high-precision positioning provided by the guide reference side ensures that the glass can achieve precise flush alignment with the exterior trim panel when closed, resulting in a high-quality visual effect with zero step difference. Meanwhile, the auxiliary sealing lip and other structures in the preferred embodiment effectively conceal internal mechanical components, further enhancing the overall feel and refinement of the interior.

[0057] 5. Asymmetric functionality is achieved through differentiated sliders, allowing the system to use standardized sealing strip profiles with a uniform cross-sectional shape. Compared to designing sealing strips with different cross-sections for different columns, this application significantly simplifies mold management, extrusion production processes, and reduces supply chain costs, demonstrating significant industrial practicality and economic benefits.

[0058] 6. An innovative design incorporates an avoidance mechanism between the shielding part and the sliding mechanism. By setting up the shielding part, potential wear marks that may occur in the inner cavity of the sealing strip due to long-term friction are visually concealed. Simultaneously, in conjunction with the first auxiliary support protrusion at the bottom of the sliding mechanism, not only is the torsion of the slider limited, ensuring the stability of the shielding gap, but the main sliding friction pair is also transferred to the bottom of the inner cavity of the sealing strip. Since the bottom of the inner cavity is in a non-visible area for the user (concealed by the shielding part), even if wear occurs, it will not affect the appearance, thus ensuring that the sealing system maintains a clean and high-quality visual effect even after long-term use.

[0059] 7. The engineering contradiction between easy assembly and preventing detachment is resolved by using the undercut fit between the guide rail limiting rib and the short lip of the sealing strip. The shortened fifth lip reduces insertion resistance and improves assembly efficiency; while the well-positioned undercut structure provides strong mechanical holding force to prevent the sealing strip from accidentally detaching. In addition, this limiting structure also provides a precise positioning reference, restricting the displacement of the sealing strip and simplifying the subsequent flush adjustment process of the vehicle body exterior panels.

[0060] 8. By introducing fiberglass ropes into the through-holes of the sealing strip, the longitudinal elongation of the rubber material during extrusion and use is effectively suppressed, preventing the sealing strip from developing wavy deformation and ensuring dimensional stability throughout its entire life cycle. Simultaneously, utilizing the through-holes as folding hinge points enables a "horizontal extrusion-roll forming" manufacturing process, reducing the difficulty of mold development and production costs for complex irregular cross-sections.

[0061] 9. The corrugated area design effectively avoids dynamic friction noise caused by the pressure on the decorative lip when the window shakes by reducing the contact area; the sealing rib at the bottom creates an air gap to avoid sticking noise and vibration knocking caused by long-term contact between rubber and metal platform, significantly improving the quietness of the vehicle.

[0062] 10. Addressing the stress characteristics at the bottom of the sealing strip, this application creatively employs an asymmetrical first lip design. By shortening the length of the inner load-adjusting lip, the compressive reaction force on that side is actively reduced, eliminating the overturning torque that causes the sealing strip to lift overall. This design ensures that the sealing strip maintains a naturally horizontal and stable unfolding posture after being installed in the guide rail, avoiding premature failure caused by localized stress concentration and extending the service life of the sealing system. Attached Figure Description

[0063] To more clearly illustrate the technical solutions of the embodiments of this application, 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 this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 is a schematic diagram of the overall structure of the first sealing system of this application.

[0065] Figure 2 is a schematic diagram of the sealing strip structure in the first sealing system of this application.

[0066] Figure 3 is a schematic diagram of the sliding mechanism structure in the first sealing system of this application.

[0067] Figure 4 is a schematic diagram of the overall structure of the second sealing system of this application.

[0068] Figure 5 is a schematic diagram of the overall structure of the third sealing system of this application.

[0069] Figure 6 is a schematic diagram of the sealing strip structure of the third sealing system of this application.

[0070] Figure 7 is a schematic diagram of the overall structure of the fourth sealing system of this application.

[0071] Figure 8 is a schematic diagram of the overall structure of the fifth sealing system of this application.

[0072] Figure 9 is a schematic diagram of the structure of the fifth sealing system of this application after structural deformation.

[0073] Figure 10 is a schematic diagram of the sliding mechanism structure of the fifth sealing system of this application.

[0074] Figure 11 is a schematic diagram of the overall structure of the sixth sealing system of this application.

[0075] Figure 12 is a schematic diagram of the A-column structure of the seventh sealing system of this application.

[0076] Figure 13 is a schematic diagram of the front door B-pillar (AB) structure of the seventh sealing system of this application.

[0077] Figure 14 is a schematic diagram of the rear door B-pillar (BC) structure of the seventh sealing system of this application.

[0078] Figure 15 is a schematic diagram of the C-column structure of the seventh sealing system of this application.

[0079] Figure 16 is a partial enlarged view of the rear door B-pillar (BC) of the seventh sealing system of this application.

[0080] Figure 17 is a schematic diagram of the B-pillar sliding mechanism (guide slider) of the seventh sealing system of this application.

[0081] Figure 18 is a structural schematic diagram of the A-pillar / C-pillar sliding mechanism (compensation slider) of the seventh sealing system of this application.

[0082] Figure 19 is a schematic diagram of the B-pillar structure of the eighth sealing system of this application.

[0083] Figure 20 is a schematic diagram of the A-column / C-column structure of the eighth sealing system of this application.

[0084] Figure 21 is a schematic diagram of the B-pillar structure of the ninth sealing system of this application.

[0085] Figure 22 is a schematic diagram of the single lip design structure of the rear door B-pillar (BC) of the seventh sealing system of this application.

[0086] Figure 23 is a schematic diagram of the design structure of the decorative bubble tube on the rear door B-pillar (BC) of the seventh sealing system of this application.

[0087] Figure 24 is a schematic diagram of the B-pillar structure of the tenth sealing system of this application.

[0088] Figure 25 is a schematic diagram of the sliding mechanism of the tenth sealing system of this application.

[0089] Figure 26 is a schematic diagram of the B-pillar structure of the eleventh sealing system of this application.

[0090] Figure 27 is a schematic diagram of the A-column / C-column structure of the eleventh sealing system of this application.

[0091] Figure 28 shows the CAE stress analysis diagram when the asymmetric lip design of this application is not adopted.

[0092] Figure 29 is a schematic diagram of the A-column / C-column structure of the twelfth sealing system of this application.

[0093] Figure 30 is a schematic diagram of the A-column / C-column structure of the thirteenth sealing system of this application.

[0094] Figure 31 is a schematic diagram of the B-pillar structure of the thirteenth sealing system of this application.

[0095] It should be noted that, in order to simplify the accompanying drawings and highlight the core concept of this application, the accompanying drawings of this application mainly show structural schematic diagrams of one side of the vehicle door or a specific pillar. For the seventh, eighth, tenth, and eleventh sealing systems of this application, they follow the principle of symmetry design in vehicle installation: that is, the sealing structures of the A-pillar and C-pillar are mirror-symmetrical, and the front door B-pillar (AB side) and the rear door B-pillar (BC side) are mirror-symmetrical. Those skilled in the art, based on the structures shown in Figures 19, 20, 26, and 27, combined with the above-mentioned principle of symmetry, are sufficient to understand and obtain the corresponding symmetrical structures on the unshown sides. Therefore, this specification will not illustrate all symmetrical perspectives one by one.

[0096] 3. Guide rail; 301. Limiting protrusion; 302. Obstruction protrusion; 303. Extension platform; 304. Limiting rib.

[0097] 4. Sealing strip; 401. Sealing strip body; 402. Support part; 403. First lip; 4031. First lip recess; 404. Second lip; 405. Third lip; 406A. Decorative bubble tube; 4061. First end of decorative bubble tube; 4062. Second end of decorative bubble tube; 4063. Decorative bubble tube body; 406B. Decorative lip; 4064. Second end of decorative lip; 4065. Protrusion of decorative lip; 4067. Recess of decorative lip; 4068. First end of decorative lip; 40 7. Fourth lip edge; 4071. First concave part of the fourth lip edge; 4072. First convex part of the fourth lip edge; 4073. Root of the fourth lip edge; 4074. Second convex part of the fourth lip edge; 4075. Second concave part of the fourth lip edge; 4076. Extension of the fourth lip edge; 408. Fifth lip edge; 409. Sixth lip edge; 410. Seventh lip edge; 4101. Concave part of the seventh lip edge; 4102. Convex part of the seventh lip edge; 411. Connecting post; 412. Blocking part; 413. Through hole; 414. Corrugated area; 415. Sealing rib.

[0098] 501. Sliding column; 502. First slider; 5021. First slider connecting part; 5022. First slider body; 5023. First slider bonding part; 503. Second slider; 5031. Second slider connecting part; 5032. Second slider body; 5033. First limiting flange; 5034. Second limiting flange; 5035. Second slider bonding part; 5036. Wavy texture; 504. Adhesive; 505. Sliding column connecting part; 506. First positioning protrusion; 5061. Lower positioning protrusion; 5062. Right positioning protrusion; 507. Tolerance absorption head; 508. Fourth slider connecting part; 509. Elliptical sliding column; 510. First auxiliary support protrusion; 511. Second auxiliary support protrusion.

[0099] 601. Glass; 602. Exterior trim panel.

[0100] 7. Interior trim panels; 8. Wear-resistant layer; 9. Door sheet metal. Detailed Implementation

[0101] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application are within the scope of protection of this application.

[0102] To better describe and illustrate the embodiments of this application, reference may be made to one or more accompanying drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventive creations of this application, the embodiments or preferred methods described herein.

[0103] In the description of this application, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the positional relationship shown in the corresponding drawings, and are only for the convenience of describing this application, and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation, and therefore should not be construed as a limitation of this application.

[0104] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0105] For the wear-resistant layer 8, those skilled in the art can preferentially choose the wear-resistant EPDM lubricant disclosed in CN117186524A, or they can choose PE, flocking, or other technical solutions that are well known to those skilled in the art.

[0106] Please refer to Figures 1 and 2, which are schematic diagrams of a cross-sectional design structure according to this application. A sealing strip 4, preferably integrally extruded from an elastic material (such as EPDM rubber or TPV thermoplastic elastomer) with a specific cross-sectional shape, is fixedly installed in a guide rail 3 pre-installed on the door frame or vehicle body. A sliding mechanism is held within the sealing strip 4, and the sliding mechanism has an end fixedly connected to the bottom or side of the glass 601. At least a portion of the sliding mechanism is accommodated within the cavity of the sealing strip 4 and can slide relative to the sealing strip 4 along the extension direction of the cavity. During the operation of raising and lowering the window, the sliding mechanism is driven to move up and down by a drive component, causing the glass 601 to rise and fall. The sealing strip 4 limits the sliding mechanism, causing the sliding mechanism to drive the glass 601 to move along a preset direction.

[0107] The guide rail 3 has a mounting groove for accommodating the sealing strip 4. The sealing strip 4 is fixedly housed in the guide rail 3 by engaging with the inner wall features of the mounting groove, achieving a stable assembly relationship. The limiting protrusion 301 and the obstructing protrusion 302 respectively hold and limit the sealing strip 4 from the top and bottom.

[0108] The material of the exterior panel 602 can be engineering plastics, such as, but not limited to, high-strength polymer materials such as polycarbonate (PC), ABS resin or their alloys; or it can be glass.

[0109] The guide rail 3 can be made of metal materials, such as, but not limited to, aluminum alloy and stainless steel; similarly, it can also be made of engineering plastics, such as, but not limited to, high-strength polymer materials such as polycarbonate (PC), ABS resin or their alloys.

[0110] The exterior panel 602 and the guide rail 3 can be reliably connected by various fixing methods known in the art, including but not limited to bonding (e.g., using structural adhesive, adhesive, etc.), mechanical fastening (e.g., using screws, rivets), snap-fitting (e.g., by using a pre-set buckle and slot), or welding (e.g., laser welding or ultrasonic welding).

[0111] In one specific embodiment of this application, the obstruction protrusion 302 of the guide rail 3 extends outward to form an extension platform 303. A portion of the sealing strip body 401 extending towards the bottom of the fourth lip 407 is supported on the upper surface of this extension platform 303. Furthermore, a certain gap is formed between the extension platform 303, the obstruction protrusion 302, and the bottom of the fourth lip 407, which can serve as a structural interface for cooperation with the interior trim panel 7. During vehicle assembly, the end portion of the interior trim panel 7 can be directly overlapped or snapped into the aforementioned structural interface, simplifying the overall structure of the door assembly. Simultaneously, the interior trim panel 7 directly covers the extension platform 303, avoiding direct exposure of the metal structure. This allows for a smooth visual transition and natural assembly gap between the sealing strip 4 and the interior trim panel 7, significantly improving the overall feel and refinement of the vehicle's interior.

[0112] Please refer to Figures 1 and 2. A sealing strip 4 includes a sealing strip body 401. On the bottom surface of the sealing strip body 401, a plurality of downwardly protruding support portions 402 are integrally formed. The support portions 402 are used to support the sealing strip body 401 on the bottom of the guide rail 3 and maintain a preset installation gap.

[0113] On the inner and outer walls of the sealing strip body 401, multiple lip structures are provided for sealing and engaging with the inner cavity of the guide rail 3. Specifically, a first lip 403 extends downward from the outer side of the sealing strip body 401 and abuts against the inner wall of the guide rail 3. When abutting, the first lip 403 deforms towards a pre-set first lip recess 4031. Above the first lip 403, a second lip 404 extends from the sealing strip body 401 to the inner wall of the guide rail 3, and the second lip 404 abuts against the interior of the guide rail 3. At the uppermost part of the outer side of the sealing strip body 401, a fifth lip 408 extends outward, its position corresponding to the limiting protrusion 301 provided on the guide rail 3, together serving the functions of sealing and guiding. A third lip 405 extends outward from the outer side of the sealing strip body 401, and this third lip 405 abuts against the obstructing protrusion 302 on the guide rail 3. The sealing strip 4 is firmly fixed in the cavity of the guide rail 3 by the bidirectional clamping and positioning formed by the first lip 403, the second lip 404, the third lip 405 and the fifth lip 408 with the inner and outer walls of the guide rail 3.

[0114] Specifically, in one embodiment, the upper part of the sealing strip 4 is integrally formed with a hollow decorative bubble tube 406A. The decorative bubble tube 406A is made of foamed rubber. It is integrally connected to the sealing strip body 401, which is made of dense rubber, through its first end 4061 and second end 4062, by extrusion molding, thus forming a closed internal cavity. The first end 4061 of the decorative bubble tube body 4063 simultaneously abuts against the outer trim panel 602, while the outer surface of the decorative bubble tube body 4063 abuts against the glass 601, thus being in a pre-compressed state after installation. A wear-resistant layer 8 is also covered on the outer surface of the decorative bubble tube body 4063. When the glass 601 is raised or lowered, its surface slides in contact with this wear-resistant layer 8. This design not only utilizes the elastic deformation of the decorative bubble tube 406A to achieve a seal, but also ensures the reliability of dynamic contact through the wear-resistant layer 8, and ultimately creates a visually continuous and flush overall appearance between the outer panel 602 and the glass 601.

[0115] At the other end of the sealing strip body 401, a fourth lip 407 is integrally formed, which performs the main dynamic sealing function. The fourth lip 407 is fixedly connected to the sealing strip body 401 and extends upward and downward into an elastic arm-shaped structure. The arm-shaped structure has a concave first recessed portion 4071 and an outward convex first protruding portion 4072 of the fourth lip, the top of which is used to elastically abut against the surface of the glass 601. A wear-resistant layer 8 is covered on the outer surface of the arm-shaped structure that contacts the glass 601 to withstand the sliding friction during the lifting and lowering of the glass 601. In addition, a fourth lip extension 4076 extends from near the root 4073 of the fourth lip, which covers the upper edge of the interior panel 7 downward, realizing a smooth transition and overlapping seal between the lip structure and the interior panel 7.

[0116] Referring to Figure 3, a sliding mechanism is enclosed inside the sealing strip body 401 to achieve guidance and drive. Specifically, the inner cavity of the sealing strip 4 has a generally C-shaped cross-section, and its inner wall is provided with a generally C-shaped wear-resistant layer 8. The sliding mechanism is preferably integrally formed by a sliding column 501, a sliding column connecting part 505, and a first slider 502. As one embodiment, the sliding mechanism can be integrally molded plastic, low-friction nylon composite material, or other materials well known to those skilled in the art. The sliding column 501 is cylindrical and is housed in the C-shaped cavity of the sealing strip 4, forming a line contact with its upper and lower inner walls extending along the length direction. This double-guided contact method reduces the frictional resistance of the sliding mechanism during the sliding process, thereby enabling the entire sliding mechanism to perform smooth linear reciprocating motion along the inner cavity path of the sealing strip 4 under the action of the drive motor.

[0117] Structurally, the sliding column 501 is connected to the first slider 502 via the sliding column connecting part 505. The first slider 502 consists of a first slider connecting part 5021, a first slider body 5022, and a first slider adhesive part 5023, and its outer contour gradually expands from the first slider connecting part 5021 towards the first slider adhesive part 5023. By applying adhesive to the first slider adhesive part 5023, the sliding mechanism and the glass 601 are fixedly connected. In the entire sealing system, the drive motor drives the sliding mechanism to reciprocate within the cavity of the sealing strip 4, thereby causing the glass 601, which is fixedly connected to it, to synchronously complete the lifting and lowering action.

[0118] Referring to Figure 4, in one specific embodiment of this application, to accommodate the potentially large installation gap between the guide rail 3 and the sealing strip body 401, and to ensure that the interior panel 7 with limited thickness can be stably held, this solution features an adaptive design for the lip structure on the outer side of the sealing strip 4. Specifically, to effectively bridge the installation gap and provide a stable supporting base for the interior panel 7, a sixth lip 409 extends outward from the sealing strip body 401, thereby providing reliable elastic support for the lower surface of the interior panel 7. In conjunction with this, the fourth lip extension 4074 of the fourth lip 407 elastically presses against the upper surface of the interior panel 7 from above. Through the upward support of the sixth lip 409 and the downward pressing of the fourth lip extension 4074, the edge of the interior panel 7 is firmly clamped in a preset position, thus solving the problem of unstable installation of the interior panel 7 that may be caused by a large structural span, forming a double sealing barrier from top to bottom, significantly improving the assembly stability and overall sealing performance of this area. Meanwhile, the interior panel 7 can still cover the guide rail 3, and there is a smooth transition between the lip structure and the interior panel 7.

[0119] Please refer to Figures 5-7. To enhance the integrated aesthetics of the overall vehicle design, reduce the gaps between various body components (GAP), and decrease the operating force during window operation, this application provides a new embodiment. The core of this solution lies in replacing the original decorative bubble tube 406A with a decorative lip 406B, which can be made of foamed rubber or dense rubber as needed. Apart from this key difference, the remaining structures in this embodiment, such as the fourth lip 407, the sealing strip body 401, and its mating relationship with the guide rail 3, remain consistent with the aforementioned embodiment.

[0120] Structurally, the decorative lip 406B is integrally formed with the main body of the sealing strip 4. Its first end 4068 extends to the left, abutting against the outer trim panel 602; it extends from the first end 4068 to the second end 4064 to form the decorative lip. The decorative lip elastically abuts against the end of the glass 601. Under the lateral pressure of the glass 601, the protrusion 4065 of the decorative lip elastically deforms towards the pre-set recess 4067 on the decorative lip, thereby forming a reliable seal. All lip surfaces that slide in contact with the glass 601 are covered with a wear-resistant layer 8 to ensure the reliability of dynamic contact, and also create a visually continuous and flush overall appearance between the outer trim panel 602 and the glass 601.

[0121] The advantage of this design lies in the fact that the arm-like structure of the decorative lip 406B has no rigid support underneath, allowing it to swing freely like a cantilever, thus exerting minimal rebound force on the glass 601. This contrasts sharply with the traditional decorative bubble tube 406A, which provides greater support due to its complete structure, thereby reducing the force required to raise and lower the glass 601. Secondly, because the shape of the decorative lip 406B is much thinner and more compact than that of the traditional bubble tube 406A, the visible gap between the outer trim panel 602 and the glass 601 is significantly reduced, resulting in a more compact overall profile for the sealing strip 4'. This allows for a smaller overall size of the sealing strip 4', achieving weight reduction and saving door space, thus providing greater design freedom for other door components.

[0122] Further, please refer to Figure 8. To meet the higher requirements of NVH (noise, vibration, and harshness) performance and visual aesthetics in application scenarios, this application also provides an optimized sealing strip inner cavity structure. In Figures 1-7, the fourth lip 407 is mainly in sliding friction contact with the glass side, and it is a single inner lip design. However, this single-lip design has the following technical problems: 1. The single-line contact and seal provided by the single lip means that after the fourth lip 407 deforms, its end cannot abut against the first slider 502, which is insufficient to completely block dust and moisture. Under long-term use, dust accumulation may increase the operating resistance of the sliding mechanism; 2. The single-point contact has a weak constraint on the glass sliding mechanism. Under the vibration conditions of vehicle driving, the slider may produce slight displacement or vibration, which may cause abnormal noise and negatively affect the vehicle's NVH performance; 3. When the window glass 601 is fully lowered, the user's line of sight can directly see the inner cavity of the sealing strip. The single-lip structure exposes the internal mechanical components, making it appear hollow and destroying the visual integrity and sense of luxury, failing to meet the increasingly sophisticated aesthetic demands of consumers. Therefore, the industry urgently needs an innovative sealing structure that can improve functional performance while optimizing visual aesthetics.

[0123] Therefore, this solution extends a seventh lip 410 upward on the sealing strip body 401 and replaces the first slider 502 with a new second slider 503.

[0124] Considering that the length of the sliding mechanism is typically less than the full length of the sealing strip 401, a seal interruption will occur in the area it does not cover. Therefore, in this embodiment, a seventh lip 410 extends upward from the body of the sealing strip 401, and the previous first slider 502 is replaced with a new second slider 503. Specifically, as shown in FIG8, the seventh lip 410 includes a seventh lip recess 4101 and a seventh lip protrusion 4102. A wear-resistant layer 8 is provided on one side of the seventh lip 410, achieving stable guidance and sealing coverage for the sliding mechanism and the glass 601.

[0125] Referring to Figure 9, in the region where the second slider 503 of the sliding mechanism has not yet moved to its longitudinal position (seventh lip 410), the end of the seventh lip 410 will naturally and elastically abut against the surface of the glass 601 to ensure the continuity of the seal. When the second slider 503 moves to this region along its preset path, the contour of its slider body will force the seventh lip 410 to elastically deform downwards. At this time, the wear-resistant layer 8 on the surface of the seventh lip 410 will then slide in contact with the lower surface of the second slider 503. This embodiment utilizes the flexibility of the seventh lip 410 to seamlessly switch its sealing object under different working conditions, ensuring both the integrity of the seal throughout the entire stroke and a smooth, wear-resistant dynamic fit with the sliding mechanism. Furthermore, when the window is lowered, the seventh lip 410 conceals the mechanical structure and the break in the sliding mechanism below, filling the visual gaps that might otherwise appear, presenting the user with a complete, continuous, high-quality appearance, thereby satisfying consumers' pursuit of exquisite design aesthetics.

[0126] Referring to Figure 10, this application also discloses a second slider 503 with an optimized structure. The second slider 503 includes a cylindrical slide post 501 serving as a guide element. The slide post 501 is housed within the C-shaped cavity of the sealing strip 4 and forms a low-friction line contact with the wear-resistant layer 8 disposed on the inner wall of the cavity. The slide post 501 is connected to the second slider body 5032 via an integrally formed slide post connecting portion 505.

[0127] Unlike the first slider 502, which has a gradually expanding shape, the second slider 503 employs a more compact and linear contour design between its connecting part and the main body. Its core purpose is to provide necessary elastic clearance space for the seventh lip 410 on the sealing strip 4. When the second slider 503 moves and contacts the seventh lip 410, this clearance space can accommodate the elastic deformation of the seventh lip 410. Without this space, the end of the seventh lip 410 would rigidly interfere with or continuously rub against the second limiting flange 5034 of the second slider 503. This would not only exacerbate premature wear of the seventh lip 410 but could also cause abnormal noise due to changes in the fit clearance after long-term use, thus affecting the overall vehicle noise reduction performance.

[0128] Furthermore, the second slider body 5032 extends upward to form a U-shaped adhesive receiving groove. This receiving groove is formed by a first limiting flange 5033 and a second limiting flange 5034 serving as sidewalls, and a second slider adhesive portion 5035 serving as a base surface. This structure provides precise positioning for the adhesive 504 and the parts to be bonded, prevents the adhesive 504 from overflowing, and ensures the uniformity of the adhesive layer thickness, thereby improving production efficiency and assembly accuracy.

[0129] Furthermore, the second slider bonding portion 5035 is provided with a wave pattern 5036, thereby forming a rough texture on the surface of the bonding portion. By significantly increasing the effective contact area and forming a microscopic mechanical interlock with the cured adhesive 504, the shear and peel strength of the bonding interface is greatly enhanced.

[0130] Referring to Figure 11, in certain vehicle platforms or body structure designs, the flange edge of the door sheet metal 9 may be wider than expected, and no separate interior panel 7 may be provided to cover it. This structure not only visually exposes the original sheet metal parts, resulting in an incomplete and unsightly appearance, but also leaves a potential gap that could become a pathway for noise, dust, and moisture to enter the passenger compartment. To address this specific technical problem, this application provides a sealing strip structure with an adaptive design.

[0131] Therefore, this technical solution functionally extends the lower structure of the fourth lip 407. Specifically, the fourth lip 407 extends downwards and towards the sheet metal 9 from its root to cover the end of the sheet metal 9. The second protrusion 4074, the second recess 4075, and the extension 4076 of the fourth lip are sequentially connected to form a roughly C-shaped receiving cavity. Specifically, the second protrusion 4074 of the fourth lip abuts against the sheet metal 9, and the second recess 4075 extends out to accommodate the end of the sheet metal 9. It further extends to form the extension 4076 of the fourth lip to cover the protruding end. After the sealing strip 4 is installed, the extension 4076 of the fourth lip will undergo elastic deformation and form a tight seal with the surface of the door sheet metal 9.

[0132] Through this integrated extended structure, this solution utilizes the sealing strip 4 itself to achieve both decorative and concealing functions for the door sheet metal 9. This not only completely solves the visual discontinuity problem caused by the exposed door sheet metal 9, achieving seamless visual integration and a high-quality appearance, but also eliminates the need for additional independent interior trim panel 7, thereby optimizing component costs and assembly processes.

[0133] Referring to Figures 12 to 18, this application also provides an innovative asymmetric guiding and sealing system. The core concept of this application is to configure sliding mechanisms (sliders) with different geometric structures at different pillar positions of the vehicle door (e.g., A-pillar, front door B-pillar, rear door B-pillar, and C-pillar), and to make these sliders run in the inner cavity of the sealing strip 4, thereby synergistically achieving guidance and flexibility tolerance compensation for the vehicle window glass 601.

[0134] The core of this application lies in configuring two sliding mechanisms with different geometries. In the following text, we will also refer to the sliding mechanism used on the guide reference side as a "guide slider" (refer to Figure 17) and the sliding mechanism used on the flexible compensation side as a "compensation slider" (refer to Figure 18).

[0135] The cross-section of the sealing strip 4 can be optimized in a differentiated and targeted manner according to the specific geometric constraints and functional requirements of different vehicle models. That is, the sealing strips 4 used for the A-pillar, front door B-pillar, rear door B-pillar, and C-pillar can have different cross-sectional shapes.

[0136] In a preferred embodiment, the sealing strip 4 adopts a uniform cross-sectional shape. That is, the sealing strips 4 used for the A-pillar, front door B-pillar, rear door B-pillar, and C-pillar are all extruded profiles formed by the same mold. Standardized design simplifies the product manufacturing process, mold management, and reduces supply chain costs.

[0137] Furthermore, to accommodate the symmetrical layout of the vehicle body, the sealing system of this application can be symmetrically configured. Specifically, the sealing strips of the A-pillar and C-pillar can be constructed as a mirror-symmetrical pair; similarly, the sealing strips of the front door B-pillar and rear door B-pillar can also be constructed as a mirror-symmetrical pair.

[0138] For clarity and to facilitate the explanation of the core asymmetric design concept of this application, the following description will primarily use the A-pillar and the rear door B-pillar as examples for comparison. Those skilled in the art, based on the teachings of this application, will understand that this "one-end compensation, one-end guidance" asymmetric design concept also applies to the front door sealing system composed of the A-pillar (compensation side) and the front door B-pillar (guidance reference side), and the rear door sealing system composed of the rear door B-pillar (guidance reference side) and the C-pillar (compensation side). Alternatively, depending on the vehicle structure design or other factors, the A-pillar / C-pillar may be set as the guidance reference side, and the B-pillar as the compensation side. Therefore, the description of specific examples should not be construed as limiting the scope of application of this application.

[0139] In the asymmetric guidance system of this application, the B-pillar of the vehicle door is preferably selected as the guidance reference side. This selection is based on the fact that the B-pillar is typically long and stable structurally, with a relatively small range of motion, providing ideal physical conditions for establishing a reliable guidance reference. The sealing system of this application is compatible with dual-rail window lift systems and can also improve the stability of single-rail lift systems.

[0140] Referring to Figure 14, the B-pillar, serving as the guide reference side, includes a guide rail 3. The guide rail 3 has a specific inner cavity profile and is provided with a limiting protrusion 301 for installation and positioning. A blocking protrusion 302 is provided at its lower part, and it extends to the right (X direction) to form an extension platform 303. The portion of the sealing strip body 401 extending towards the bottom of the fourth lip 407 is supported on the upper surface of this extension platform 303.

[0141] A sealing strip 4 is disposed within the inner cavity of the guide rail 3. It includes a sealing strip body 401. To achieve stable installation and positioning, various mating structures are provided on the sealing strip body 401. Specifically, one or more support portions 402 are integrally formed on its bottom surface. These support portions 402 are used to stably support the sealing strip body 401 at the bottom of the guide rail 3 and can be used to maintain a preset installation gap. Furthermore, at least one lip structure, such as a first lip 403, extends from the side wall of the sealing strip body 401. This first lip 403 elastically abuts against the inner side wall of the guide rail 3, primarily fulfilling the functions of limiting and stably supporting the sealing strip 4. Those skilled in the art should understand that the specific number, shape, and layout of the support portions 402 and the lip structures (such as the first lip 403) are not fixed and can be adaptively adjusted and designed according to the actual contour of the guide rail 3 and assembly requirements. These variations do not depart from the scope of protection of this application.

[0142] The interior of the sealing strip 4 defines an inner cavity for accommodating the sliding mechanism. A wear-resistant layer 8 is preferably applied to the inner wall of this cavity to reduce sliding friction. In terms of its cross-sectional shape, the wear-resistant layer 8 preferably presents an open profile, generally "C" or "U" shaped. This profile conforms to the inner wall of the sealing strip body 401. The wear-resistant layer 8 partially covers the sliding mechanism, collectively defining an opening for its movement, providing a continuous sliding contact surface for the slider's slide post 501 and the first positioning protrusion 506, ensuring that the micro-gap or zero-gap fit between them is stably maintained during dynamic operation. Along the length of the sealing strip 4, the cross-sectional profile of the wear-resistant layer extends continuously, forming a through-type precision guide track with a constant cross-sectional shape within the cavity. This continuous track provides stable and uninterrupted support and guidance for the sliding mechanism throughout its lifting stroke.

[0143] Those skilled in the art should understand that the specific geometry of the wear-resistant layer 8 is not fixed. In other embodiments, the wear-resistant layer 8 can also be discontinuous. For example, it can be composed of multiple independent wear-resistant strips disposed at different locations on the inner wall of the cavity, or its coverage can be limited to the key areas that have the main sliding contact with the sliding mechanism, rather than completely covering the entire inner cavity wall. The core of its design lies in introducing a low-friction, high-wear-resistant medium layer between the sliding mechanism and the sealing strip body, which is an elastomer. Therefore, any geometry of the medium layer and its arrangement that can achieve this function, as long as it does not depart from the core concept of this application, should be considered to fall within the protection scope of this application.

[0144] In one specific embodiment, the upper part of the sealing strip 4 is integrally formed with a decorative structure. This decorative structure can be specifically embodied as a decorative lip 406B as shown in the attached figure, or in other embodiments, it can take the form of a hollow decorative bubble tube 406A (refer to Figure 23). Since the specific details of these two structures have been described in detail above, they will not be repeated here.

[0145] Regardless of its form, the exterior decorative structure, through its own elastic deformation, forms a tight fit with the outer surface of the glass 601, thereby providing an effective external seal. Preferably, a wear-resistant layer 8 is applied to the surface of the structure in contact with the glass 601, ensuring smooth sliding and maintaining reliable contact during the dynamic process of glass lifting and lowering. This design achieves a reliable seal while also creating a visually continuous and flush high-quality appearance between the outer panel 602 and the glass 601.

[0146] Referring to Figure 22, the sealing strip 4, facing the glass 601, has at least one lip structure for dynamically sealing with the glass 601. This includes at least one fourth lip 407 as the main sealing lip. The fourth lip 407 has an arm-like structure, allowing it to elastically abut against the surface of the glass 601, forming a basic dynamic seal.

[0147] In a preferred embodiment, to meet higher NVH performance and aesthetic requirements, a seventh lip 410 is added. This seventh lip 410, together with the fourth lip 407, forms a double-sealed barrier to improve sound insulation. Specifically, it not only enhances the sealing effect by forming a double seal, thus strengthening the dynamic stability of the sliding mechanism to suppress abnormal noises, but also provides visual concealment when the window is lowered, effectively hiding the internal mechanical structure and improving the overall aesthetics of the interior. Accordingly, the lip surfaces that slide in contact with the glass 601 or the sliding mechanism described later (e.g., the surfaces of the fourth lip 407 and / or the seventh lip 410) are preferably covered with a wear-resistant layer 8 to ensure dynamic contact reliability during long-term glass raising and lowering.

[0148] To achieve decorative concealment and sealing of the end of the door sheet metal 9, a covering structure extends downward from the root of the fourth lip 407. This structure is formed by sequentially connecting the second protrusion 4074, the second recess 4075, and the extension 4076 of the fourth lip. Its C-shaped receiving cavity can enclose the end of the sheet metal 9, and the sealing strip 4 itself achieves the dual functions of decoration and concealment of the door sheet metal 9. This not only solves the visual discontinuity problem caused by the exposed door sheet metal 9, achieving seamless visual integration and a high-quality appearance, but also eliminates the need for additional independent interior trim panel 7, thereby optimizing component costs and assembly processes.

[0149] Referring to Figures 19 and 20, in one specific embodiment of this application, to accommodate the potentially large installation gap between the guide rail 3 and the sealing strip body 401, and to ensure that the interior panel 7 with limited thickness can be stably held, this solution features an adaptive design for the lip structure on the outer side of the sealing strip 4. Specifically, to effectively bridge the installation gap and provide a stable supporting base for the interior panel 7, a sixth lip 409 extends outward from the sealing strip body 401, thereby providing elastic support for the lower surface of the interior panel 7. In conjunction with this, the fourth lip extension 4074 of the fourth lip 407 elastically presses against the upper surface of the interior panel 7 from above. Through the upward support of the sixth lip 409 and the downward pressing of the fourth lip extension 4074, the edge of the interior panel 7 is firmly clamped in a preset position, thus solving the problem of unstable installation of the interior panel 7 due to a large structural span, forming a double sealing barrier, significantly improving the assembly stability and overall sealing performance of this area. Meanwhile, the interior panel 7 can cover the guide rail 3, improving the visual quality of the interior, and the lip structure has a smooth transition with the interior panel 7.

[0150] As a specific embodiment, those skilled in the art can also refer to the design in Figure 1 to form a certain gap between the extension platform 303, the obstruction protrusion 302, and the bottom of the fourth lip 407, which can be used as a structural interface to cooperate with the interior panel 7. During the vehicle assembly process, the end portion of the interior panel 7 can be directly overlapped or snapped into the above-mentioned structural interface, simplifying the overall structure of the door assembly. At the same time, the interior panel 7 also directly covers the extension platform 303, avoiding direct exposure of the metal structure, so that a smooth visual transition and natural assembly gap can be formed between the sealing strip 4 and the interior panel 7, significantly improving the overall feel and refinement of the vehicle interior.

[0151] On the outer wall of the sealing strip 4, a second lip 404 and a fifth lip 408 are designed to work together. Specifically, the second lip 404 extends from the outer wall of the sealing strip 4 and elastically abuts against the inner wall of the guide rail 3. The second lip 404 is elastic, and its function includes compensating for the assembly tolerance between the guide rail 3 and the sealing strip 4. Through its own elastic deformation, the second lip 404 can adapt to different assembly gaps to ensure that the sealing strip body 401 is stably fixed and to prevent its inner cavity from deforming due to installation stress. At the same time, the second lip 404 also plays a role in assisting sealing and lateral positioning. The fifth lip 408 is disposed on the upper part of the outer wall of the sealing strip body 401 and is used to cooperate with the limiting protrusion 301 provided on the guide rail 3. This cooperation relationship forms a structural interlock between the sealing strip 4 and the limiting protrusion 301, thereby preventing the sealing strip 4 from loosening or falling out of the guide rail 3 due to external force.

[0152] Please refer to Figure 21. To achieve a more compact and flat visual effect between the window glass 601 and the exterior trim panel 602, the dimensions of the exterior trim panel 602 in the Y direction can be further shortened. To accommodate this change, the connecting post 411 on the upper outer side of the sealing strip 4 has also been adjusted accordingly, and its height in the Y direction has been compressed, forming a thinner outer sealing / decorative structure.

[0153] To provide sufficient support and guiding stroke for the sliding mechanism despite the limited external dimensions, the height of the inner cavity of the sealing strip 4 in the Y direction is adaptively increased. To functionally accommodate this increased Y-axis inner cavity, the sliding column 501 of the sliding mechanism is transformed from a circular cross-section into an elliptical sliding column 509 with an elliptical cross-section. The major axis of the elliptical sliding column 509 is arranged along the Y direction, and its minor axis is arranged along the X direction.

[0154] The elliptical major axis ensures that the sliding column 509 achieves sufficient guiding contact and support within the elevated inner cavity in the Y direction, maintaining system stability. Simultaneously, its smaller minor axis in the X direction ensures smooth sliding contact between the sliding column and the inner cavity sidewall. This design simultaneously meets the requirements of external zero-step technology and internal guiding function. This design is a highly adaptable solution to space constraints; therefore, sealing systems employing this design can be universally installed in the A, B, and C pillars of the vehicle door.

[0155] Please refer to Figures 14 and 17, which are schematic diagrams of the sliding mechanism used for precision guiding reference side (e.g., B-pillar) in this application. We name the sliding mechanism in this part the guide slider. The guide slider is preferably a one-piece molded structure and needs to achieve a tight fit with the inner cavity of the sealing strip.

[0156] The upper part of the guide slider has a U-shaped adhesive receiving groove. This receiving groove is formed by a first limiting flange 5033 and a second limiting flange 5034 serving as sidewalls, and an adhesive portion 5035 serving as a base surface. This structure provides precise positioning for the adhesive 504 and the parts to be bonded, prevents the adhesive 504 from overflowing, and ensures the uniformity of the adhesive layer thickness, thereby improving production efficiency and assembly accuracy.

[0157] Furthermore, the adhesive portion 5035 is provided with a wavy texture 5036, thereby forming a rough texture on the surface of the adhesive portion. By significantly increasing the effective contact area and forming a microscopic mechanical interlock with the cured adhesive 504, the shear and peel strength of the adhesive interface is greatly enhanced.

[0158] The guide slider includes a slider body. One end of the guide slider extends from the slider body via a slide post connection 505 to form a slide post 501. The first positioning protrusion 506 is integrally formed on another part of the slider body. Preferably, the slider body, slide post 501, and first positioning protrusion 506 are integrally formed. The slide post 501 has a generally circular outline, and its main function is to provide a linear sliding guide surface on one side of the sealing strip cavity. The first positioning protrusion 506 includes a lower positioning protrusion 5061 and a right positioning protrusion 5062. Preferably, the lower surface of the lower positioning protrusion 5061 is coplanar with the lower edge of the slide post 501, and the two together form a broad and continuous support reference surface at the bottom of the slider. This structural design ensures high stability of the sliding mechanism during movement along the sealing strip cavity, effectively preventing tilting or swaying, thereby ensuring smooth glass lifting and lowering.

[0159] When the guide slider is placed inside the sealing strip cavity, its sliding post 501 and the first positioning protrusion 506 will work together to precisely limit / fit the slider in multiple directions. The reference range for the precise fit is ≤1mm, and this range can be limited to ≤0.6mm when conditions permit. Specifically, the outer peripheral surface of the sliding post 501 mainly contacts the left side and part of the upper and lower inner walls of the inner cavity; while the first positioning protrusion 506 is precisely designed to fill most of the remaining space of the inner cavity, with the surface of its lower positioning protrusion 5061 contacting the bottom inner wall of the inner cavity, and the surface of its right positioning protrusion 5062 contacting the right inner wall of the inner cavity. One of the core innovations of this design is that, through the setting of the first positioning protrusion 506, the fit gap between the slider and the inner cavity in the X direction is actively and purposefully reduced and controlled within a preset small range. This ensures that the X-direction movement of the glass slider in the B-pillar is controlled within the required precision range, thereby guaranteeing the high consistency of the final vehicle glass appearance gap, rather than a completely gapless interference fit (to avoid difficulties in raising and lowering the sliding mechanism). It can accommodate reasonable manufacturing tolerances, reduce the production difficulty of the guide slider and sealing strip, and balance the contradiction between high-precision guidance and manufacturing feasibility.

[0160] Through the combined action of the sliding column 501 and the first positioning protrusion 506, a multi-point, multi-directional engagement relationship is formed between the guide slider and the inner cavity of the sealing strip, thereby suppressing the X-axis and Y-axis wobbling of the sliding mechanism. At the same time, due to the high degree of overlap between the sliding mechanism and the inner cavity of the sealing strip in the Y-axis (i.e., vertical direction), sufficient structural engagement between the two is ensured, which can effectively prevent the glass from accidentally detaching from the sealing strip under extreme working conditions, thus improving the overall reliability of the system.

[0161] Please refer to Figures 15 and 18, which are respectively a schematic diagram of the assembled state of the A-pillar / C-pillar sliding mechanism and a schematic diagram of the independent structure of the A-pillar / C-pillar sliding mechanism. We will name this sliding mechanism the compensation slider. Similar to the schematic diagram of the B-pillar slider (guide slider) described earlier, this A / C-pillar slider is preferably a one-piece molded structure. Its upper part also has a U-shaped adhesive receiving groove for installing and fixing the window glass. The specific structure will not be described in detail. The significant difference from the structure of the aforementioned guide slider is that this A / C-pillar slider does not have a first positioning protrusion 506 for limiting the position. Instead, the core of its design is to provide controllable degrees of freedom of movement, so as to define the A-pillar and C-pillar as tolerance absorption units in the entire asymmetric guide system.

[0162] The purpose of this tolerance absorption unit is to effectively address the cumulative tolerances and dynamic deviations that inevitably occur in the door / window system. These tolerances and deviations come from various sources, including manufacturing tolerances of components, assembly tolerances of the whole vehicle, and, most importantly, dynamic positional deviations generated by the single-rail lifting system during movement.

[0163] In the asymmetric guidance strategy of this application, since the B-pillar is designed as the positioning reference side, the other side of the glass (i.e., the A-pillar or C-pillar side) must absorb all cumulative tolerance fluctuations. Therefore, the A / C-pillar sliding mechanism needs adaptive structural optimization to purposefully increase its mating clearance with the sealing strip cavity in the X-direction (i.e., the vehicle body lateral direction).

[0164] Specifically, the sliding mechanism for the A / C pillars has a more compact profile in its slider connection 508, thus creating a gap between the slider body 508 and the inner wall of the sealing strip to absorb tolerances. The specific dimensions of this gap can be determined by those skilled in the art based on the overall structural design of the door / window and the dimensional requirements of the OEM. One end of the A / C pillar sliding mechanism extends via the slider connection 505 to form a tolerance-absorbing head 507. The geometry of this tolerance-absorbing head 507 has been adaptively modified to encompass any geometric construction capable of creating the gap, such as a flat cut surface, a concave arc surface, an inclined surface or chamfer, or a multi-segmented polygonal surface. Regardless of the specific trimming shape used, the core purpose is to work in conjunction with the compact slider body 508 contour to actively create a preset compensation gap between the corresponding wall surfaces of the sliding mechanism and the inner cavity of the sealing strip, so that the A / C column sliding mechanism has a preset degree of freedom of movement in the X direction when installed in the inner cavity of the sealing strip, and is basically unrestricted.

[0165] When the A / C pillar sliding mechanism is placed inside the sealing strip cavity, its compact profile and increased clearance in the X-direction create a space between the slider and the cavity wall that allows for lateral floating. During sealing strip installation and door window operation, the aforementioned cumulative tolerances and dynamic deviations are directionally transferred and absorbed and compensated for by the lateral floating of the A / C pillar sliding mechanism. This pre-set compensation clearance ensures that even if there is an X-direction deviation in the glass position, the slider will not rigidly interfere with the sealing strip cavity, thus guaranteeing smooth and stable glass raising and lowering even on the non-reference side.

[0166] In summary, by employing an A / C pillar slider with a tolerance-absorbing head 507 and no first positioning protrusion 506, this application achieves effective tolerance management on the flexible compensation side of the system. This perfectly complements the aforementioned precision guiding function of the B pillar; the two work synergistically to form the core of the asymmetric guiding system of this application.

[0167] This application provides an asymmetric guided zero-step sealing system, designed to resolve the contradiction between lifting stability, tolerance absorption, and sealing performance in automotive window systems. The core of this principle lies in the asymmetric definition of the window pillar's function: one pillar (e.g., the B-pillar) is defined as the guiding reference side, while the other pillar (e.g., the A-pillar / C-pillar) is defined as the flexible compensation side. On the guiding reference side, a sliding mechanism (guide slider) with a first positioning protrusion is used. This sliding mechanism forms a tight fit with the inner cavity of the sealing strip to suppress lateral displacement of the glass and provide a stable motion reference. On the flexible compensation side, a slider without the first positioning protrusion 506 and with a tolerance-absorbing head (compensation slider) is used. A preset compensation gap exists between this slider and the inner cavity of the sealing strip to absorb accumulated tolerances from manufacturing, assembly, and dynamic movement. This collaborative design of "rigid positioning on one end and flexible adaptation on the other" can be achieved by using two sliders with different structures in conjunction with a sealing strip of the same cross-section, thereby ensuring smooth lifting while improving system stability and assembly quality.

[0168] Please refer to Figures 24 and 25. In a preferred embodiment of this application, in order to further improve the visual quality of the vehicle and solve the technical problem in the prior art that wear marks appear in the visible area of ​​the inner cavity of the sealing strip due to the frequent lifting and lowering of the sliding mechanism, this application has improved the cross-sectional profile of the sealing strip 4 and the sliding mechanism.

[0169] The shielding structure of the sealing strip is shown in Figure 24. In addition to the aforementioned sealing strip body 401, lip structure, and inner cavity, the sealing strip 4 also includes a shielding portion 412. The shielding portion 412 is preferably integrally extruded from the same elastic material as the sealing strip body 401. Specifically, the shielding portion 412 is located on one side of the opening of the inner cavity of the sealing strip (as shown in Figure 24, the upper region of the inner sidewall). It extends from the inner wall of the sealing strip body towards the center of the inner cavity, forming a cantilever-like structure. The extension length of the shielding portion 412 is configured to cover all or part of the inner cavity sidewall region below it. This lower region is the trajectory area where the sliding mechanism experiences primary frictional contact with the inner cavity wall (and its wear-resistant layer 8) during the lifting and lowering process.

[0170] Referring to Figure 25, the sliding mechanism incorporates a design that allows for clearance. This design accommodates the blocking part 412 within a limited internal space and prevents rigid interference between the two during movement. The sliding mechanism employs a specific geometric structure. The main contour of the sliding mechanism forms a concave clearance space in the transition area between the connecting slide post 501 and the adhesive part 5035. Specifically, the sliding mechanism is designed with a "negative shape" based on the shape of the blocking part 412. When the sliding mechanism is installed, the blocking part 412 can extend into this clearance space, allowing it to hover above the main body of the sliding mechanism, forming a non-contact nested fit or only a slight elastic contact fit.

[0171] To ensure the stability of the aforementioned shielding mechanism, please refer to the attached drawings. A first auxiliary support protrusion 510 is integrally formed at the bottom of the sliding mechanism. This first auxiliary support protrusion 510 is located below the opposite side of the sliding column 501. When the sliding mechanism is placed within the sealing strip cavity, the first auxiliary support protrusion 510 abuts against the bottom wall of the sealing strip cavity, restricting the axial torsion of the sliding mechanism around the sliding column 501 (i.e., preventing the slider from "dropping" or "lifting"), thereby ensuring that the clearance space above the sliding mechanism always maintains the correct alignment with the shielding part 412, preventing the shielding part 412 from being accidentally lifted or damaged due to unstable slider posture. Through the abutting action of the first auxiliary support protrusion 510, the main vertical load and sliding friction force of the sliding mechanism during movement are purposefully transferred and concentrated at the bottom of the sealing strip cavity. Since the bottom of the sealing strip cavity is obscured by the window glass, shielding part, sealing strip lip, and sheet metal structure in the vehicle installation state, it is a non-visible area. Therefore, even if wear marks appear on the bottom area after long-term use, users cannot directly observe them.

[0172] Through the cooperation of the aforementioned blocking part 412 and the sliding mechanism, this embodiment achieves the following beneficial effects:

[0173] During long-term lifting and lowering, the sliding mechanism inevitably experiences wear, whitening, or marks on the wear-resistant layer 8 it contacts. The shielding part 412 uses its cantilever structure to visually cover this friction area. When the window glass is fully lowered, the user's view of the inside of the sealing strip opening from inside or outside the vehicle is blocked by the shielding part 412, thus preventing the internal wear marks from being seen, significantly enhancing the overall refinement and quality of the vehicle. In addition, the shielding part 412 reduces the gap of the inner cavity opening to a certain extent, which can help prevent external dust from entering the friction area and play a supporting limiting role in the upward displacement of the sliding mechanism under extreme working conditions.

[0174] In summary, this embodiment ensures that the vehicle window maintains a high-quality visual effect with no wear and tear on the inner cavity of the sealing strip, regardless of the viewing angle, by setting the shielding part 412 to cover the potential wear in the upper visible area and setting the first auxiliary support protrusion 510 to guide the main wear to the lower non-visible area.

[0175] It should be noted that although the above embodiments describe in detail the sealing strip 4 with the shielding part 412 and the corresponding sliding mechanism using the B-pillar (guide reference side) of the car door as an example, the application of this application is not limited to this. In practical applications, the shielding part 412 can also be applied to the sealing system of the A-pillar and / or C-pillar of the car door as needed, or it can be selected to be applied only to the sealing system of the front door B-pillar and / or the rear door B-pillar.

[0176] Preferably, to reduce production costs and mold management difficulty, the A-pillar, B-pillar, and C-pillar can use a uniform sealing strip profile with the same cross-sectional profile. In this case, the shielding part 412 naturally exists in the inner cavity of the sealing strip of the A-pillar and C-pillar, also serving to cover wear marks and improve appearance quality. Corresponding to the compensation slider used for the A-pillar and C-pillar (i.e., the aforementioned slider with tolerance absorption head 507), its main profile also needs to be adapted accordingly. Specifically, the upper part of the compensation slider also needs to be provided with the clearance space (or stepped part) so as to accommodate the shielding part 412 while retaining its freedom to float in the X direction to absorb tolerances. That is, the width of the clearance space on the compensation slider in the X direction may need to be designed to be wider than that of the B-pillar guide slider, or the shielding part 412 may have sufficient flexibility to ensure that the shielding part 412 does not obstruct the movement of the slider when the slider is laterally floating to compensate for tolerances. By uniformly deploying the shielding part 412 within the entire window area (A, B, and C pillars), it can be ensured that the visual effect of the inner cavity of the sealing strip remains highly consistent and neat regardless of the viewing angle during the raising and lowering of the vehicle windows.

[0177] Please refer to Figures 26 and 27. This application further provides an eleventh embodiment of the sealing system. During further research and engineering verification, the inventors discovered that with the increasing automation of vehicle assembly and the rising demands for quietness from users, existing sealing systems face two deep-seated engineering contradictions: First, to prevent the sealing strip from detaching, traditional designs often increase the lip interference, but this results in excessive assembly insertion force, making it difficult for workers to operate and hindering automated installation; second, the problem of micro-friction during vehicle operation is becoming increasingly prominent, and relying solely on macroscopic structural locking is insufficient to completely eliminate dynamic abnormal noise. To solve the aforementioned technical problems discovered in practical applications, this embodiment, based on the aforementioned asymmetric guiding design, focuses on the systematic optimization of the microstructure regarding the system's assembly manufacturability, NVH performance, and load balance.

[0178] To address the conflict between ease of assembly and connection stability, this embodiment reconstructs the interface between the guide rail and the sealing strip. Specifically, a limiting rib 304 extending inward is protruding from the inner top wall of the guide rail 3, and correspondingly, a fifth lip 408 extending outward is provided on the upper outer side of the sealing strip body 401. In this embodiment, the fifth lip 408 is constructed as a shortened wing-shaped structure. In the assembled state, the fifth lip 408 extends past the limiting rib 304 and engages in the groove behind the limiting rib 304, forming an overlocked fit. This fit utilizes the blocking effect of the limiting rib 304 on the fifth lip 408 to prevent the sealing strip from detaching from the guide rail, while also providing a positioning reference for the sealing strip and assisting in the flush adjustment of the vehicle body exterior trim panel.

[0179] In the molding structure of the sealing strip body, this embodiment has a through hole 413 extending longitudinally along the corner of the sealing strip body. The main function of the through hole 413 is to accommodate the glass fiber rope (not shown in the figure), so that the glass fiber rope is compounded / co-extruded into the through hole 413 during the extrusion process. The high tensile strength of the glass fiber rope is used to prevent longitudinal elongation deformation of the sealing strip during production and use. In addition, the structural weak point formed by the through hole 413 in the cross-section can also serve as a folding hinge, allowing the sealing strip to be manufactured using a "horizontal extrusion-roll forming" process. That is, in the extrusion stage, the through hole 413 is used to make the cross-section relatively flat, and then in the shaping stage, the through hole 413 is used as a fulcrum to roll the side wall upright to the design angle.

[0180] The shielding portion 412 within the sealing strip cavity hangs inward to conceal the running trajectory of the sliding mechanism. For wear-resistant treatment, the shielding portion 412 employs a partial coating scheme; that is, a wear-resistant layer 8 is applied to the lower wall surface of the shielding portion 412 facing the sliding mechanism, while its sides and upper surface remain exposed rubber substrate. It should be noted that the specific coating area and thickness of the wear-resistant coating can be freely selected and adjusted by those skilled in the art according to the actual friction conditions. In conjunction with the first auxiliary support protrusion 510 at the bottom of the sliding mechanism, the sliding support force and friction pair are transferred to the non-visible area at the bottom of the sealing strip cavity, thereby maintaining the clean appearance of the upper visible area.

[0181] To optimize the vehicle's quietness during operation, a corrugated area 414 with a wavy or serrated surface is provided in the neck region where the sealing strip body connects to the exterior decorative structure. When the window glass is subjected to lateral forces, causing the decorative lip to be squeezed and move closer to the neck of the body, this corrugated area 414 reduces the contact area between the two, transforming surface contact into point contact, thereby reducing the risk of frictional noise. Simultaneously, several sealing ribs 415 are integrally formed on the lower surface of the sealing strip body where it overlaps the guide rail extension platform 303. These sealing ribs 415 create an air gap between the rubber body and the rigid platform, significantly reducing the direct contact area. This design not only avoids the sticking noise and vibration impact sounds that may occur from long-term contact between rubber and metal, but also utilizes multiple ribs to form a labyrinthine sealing structure, effectively improving waterproof and dustproof performance.

[0182] To address the load distribution at the bottom of the sealing strip, this embodiment employs an asymmetrical design for the two first lips 403, including an outer support lip and an inner load-adjusting lip. For ease of understanding and explanation, we refer to the first lip closer to the glass side (right side in Figure 26) as the inner first lip, and the first lip closer to the trim panel side (left side in Figure 26) as the outer first lip. In early CAE simulation analysis (as shown in Figure 28), the inventors discovered that if the inner and outer first lips are the same length or excessively long, the outer branch will generate excessive local contact stress during assembly (as shown in the highlighted area in the figure). This stress not only fails to provide effective retention but also forms a fulcrum, unexpectedly lifting the sealing strip body, causing the support surface at the bottom of the sealing strip to fail to fit tightly against the guide rail. Based on this in-depth analysis of the failure modes, this embodiment creatively proposes an asymmetrical design scheme that shortens the inner load-adjusting lip, thereby eliminating this lifting moment and ensuring the horizontal and stable installation of the sealing strip. Specifically, in order to prevent excessive force on the inner side from causing the sealing strip to lift up, the length of the load adjustment lip on the inner side is designed to be shorter than that of the support lip on the outer side. This reduces the compressive reaction force at that location, balances the load at the bottom, and keeps the sealing strip in a horizontally laid-out state after it is installed in the guide rail.

[0183] In terms of the overall system configuration, this embodiment is configured according to the functional differences of the door pillars. On the B-pillar (as shown in Figure 26), which serves as the guide reference side, the inner cavity of the sealing strip accommodates a guide slider with a first auxiliary support protrusion 510. It should be noted that the size of the sliding column 501 (ball head) shown in the figure is only illustrative. Those skilled in the art can freely adjust the specific dimensions of the sliding column 501 and the diameter of the ball head according to the actual requirements of guiding accuracy and load-bearing capacity in practical applications. Simultaneously, the fit clearance between the guide slider and the inner cavity of the sealing strip is preferably controlled within 1 mm, more preferably within 0.6 mm, to achieve precise guidance. On the A-pillar or C-pillar (as shown in Figure 27), which serves as the flexible compensation side, the inner cavity of the sealing strip accommodates a compensation slider. A gap is reserved between the slider and the inner cavity wall to allow floating in the X direction.

[0184] Regarding the selection of the sealing strip cross-section, this application provides a preferred technical solution: a sealing strip with a shielding portion 412 is used at the B-pillar position to shield the wear in the visible area; while at the A-pillar and C-pillar positions, since they are in the visual obstruction area, a sealing strip cross-section without the shielding portion 412 is preferred to save materials. However, this does not constitute a limitation, and those skilled in the art can also provide the shielding portion 412 on the sealing strips of the A-pillar and C-pillar according to the needs of mold commonality or design standardization. When a sealing strip with a shielding portion 412 is used for the A / C pillars, it is necessary to ensure that the clearance notch on the upper part of the compensation slider has sufficient width, or to utilize the elasticity of the shielding portion 412 itself to ensure that the slider does not experience rigid interference when making lateral floating compensation tolerances.

[0185] In summary, the design principle of this embodiment (eleventh sealing system) lies in resolving multiple engineering contradictions in traditional sealing systems through the refinement of the microstructure and the asymmetry of the system configuration: On the one hand, the reverse-clamping fit of the short lip 408 and the limiting rib 304, along with the forming process assisted by the through hole 413, resolves the contradiction between ease of assembly and connection stability / dimensional accuracy; On the other hand, the cooperation between the shielding part 412 and the first auxiliary support protrusion 510 transfers the friction pair to the non-visible area, resolving the contradiction between the sliding guidance function and long-term appearance quality; Simultaneously, by combining the NVH characteristics of the corrugated area 414 and the sealing rib 415, as well as the asymmetric strategy of B-pillar guidance and A / C-pillar compensation, efficient management and absorption of manufacturing tolerances are achieved while ensuring the airtightness and quietness of the entire vehicle.

[0186] Please refer to Figure 29, which is a schematic diagram of the A-pillar / C-pillar structure of the twelfth sealing system of this application. In this embodiment, in order to further improve the stability of the sealing system during dynamic operation, especially to address the possible floating phenomenon of the sealing strip body, the sliding mechanism on the flexible compensation side has been structurally improved. As shown in Figure 29, the sliding mechanism has a tolerance absorption head 507 at the front end facing the outer trim panel, and a downward protruding structure, called the second auxiliary support protrusion 511, is integrally formed on the lower surface of the sliding column connection 505 of the sliding mechanism. The second auxiliary support protrusion 511 is located between the tolerance absorption head 507 and the slider body, and it is semi-circular or arc-shaped, with its apex facing the upper wall surface of the inner cavity of the sealing strip.

[0187] This embodiment features differentiated and precise control over the fit clearance between the sliding mechanism and the inner wall of the sealing strip. As a preferred dimensional design, the vertical distance between the semi-circular apex of the second auxiliary support protrusion 511 and the upper sealing strip sliding surface is preferably set to 0.3-0.8 mm. The main purpose of adding the second auxiliary support protrusion 511 is to suppress the lifting of the sealing strip body. Under pressure conditions in the sealing system, if there is a large cavity between the sliding mechanism and the upper wall of the sealing strip (refer to Figure 28), this area lacks solid support, causing the sealing strip to be unable to establish an effective compressive reaction force during deformation. This leads to the failure of the internal load maintaining the sealing strip's posture (i.e., load collapse), which may cause noticeable abnormal noise during glass lifting after long-term use.

[0188] To address this, this embodiment incorporates a second auxiliary support protrusion 511, creating a pre-defined limiting fulcrum (i.e., the second auxiliary support protrusion 511) between the sliding mechanism and the upper wall of the inner cavity. When the sealing strip tends to deform, the upper wall of the inner cavity can quickly abut against the second auxiliary support protrusion 511, providing timely rigid support. This structural combination effectively reinforces the internal support force and eliminates the overturning torque that causes the body to float, thereby ensuring that the sealing strip maintains a stable and fitted posture throughout installation and use.

[0189] On the other hand, to take into account the inherent properties of the A-pillar and C-pillar as flexible compensation sides, the sliding mechanism still needs to maintain sufficient tolerance absorption capacity. In a preferred embodiment, the vertical distance between the lower apex of the tolerance absorption head 507 and the surface of the lower sealing strip sliding material is set to 0.8mm-1.5mm. This relatively generous lower clearance design provides the necessary floating margin for the sliding mechanism, enabling it to avoid motion jamming caused by over-positioning when dealing with accumulated tolerances in the X or Y directions generated during vehicle body manufacturing and assembly. This achieves an effective balance between rigid limiting to suppress body lifting and dynamic adaptation for flexible compensation.

[0190] Furthermore, this twelfth sealing system also incorporates some of the optimized features from the aforementioned embodiments. For example, a plurality of sealing ribs 415 are integrally formed on the lower surface of the sealing strip body for overlapping the guide rail extension platform to create an air gap and reduce contact noise. Simultaneously, the first lip 403 at the bottom of the sealing strip adopts an asymmetrical structure where the inner side is shorter than the outer side. This design, in conjunction with the bottom support 402, effectively balances the bottom load, ensuring that the sealing strip maintains a horizontal and stable installation posture within the guide rail, preventing overturning due to uneven force.

[0191] Please refer to Figures 30 to 32, where Figures 30 and 31 show the structural schematic diagram of the thirteenth sealing system of this application, and Figure 32 is a CAE simulation deformation cloud diagram of the sealing system under interference fit conditions. In this embodiment, in response to the aforementioned failure mode where the sealing strip body is prone to lifting under interference fit, this application provides a simplified flat-bottom sealing design.

[0192] As shown in Figures 30 and 31, the bottom of the sealing strip body omits the downwardly extending first lip (403). Instead, two spaced-apart support portions (402) are integrally formed on the bottom surface of the sealing strip body. These two support portions (402) are configured to sit directly on the bottom surface of the guide rail. Accordingly, the bottom of the guide rail does not require a groove to accommodate the lip, but instead presents a flat, rigid support plane.

[0193] The simulation results in Figure 32 clearly reveal the mechanical advantages of this structure. In the aforementioned scheme with a long lip (403) and a guide rail groove, the guide rail groove often serves as a clearance space for the sealing strip to flip under force. When the sliding mechanism is squeezed into the inner cavity to form a significant interference fit (e.g., the interference amount reaches 1mm or even 2mm), the huge internal extrusion force will force one side of the sealing strip into the groove, forming a lever fulcrum and causing the other side of the body to warp. In this embodiment, as shown in Figure 32, since the first lip (403) is omitted and a flat guide rail bottom surface is used, the bottom of the sealing strip obtains full-width rigid support. Even in the extreme case of a large interference fit between the sliding mechanism and the sealing strip, since there is no clearance space for the sealing strip to sink locally, the two support parts (402) at the bottom of the sealing strip are always supported by the rigid guide rail plane. This full-plane reaction force support cuts off the formation path of the flipping torque, making it impossible for the sealing strip body to produce angular displacement. In the structure of this embodiment, there is no need to add a second auxiliary support protrusion (511). The problem of lifting of the sealing strip body can be solved from the root by relying solely on the flat rigid support at the bottom.

[0194] Furthermore, omitting the downward-extending first lip (403) significantly improves the system's assembly manufacturability. During the installation of the sealing strip into the guide rail, the insertion force of the sealing strip is greatly reduced due to the elimination of interference and friction between the long lip and the deep groove of the guide rail, facilitating product assembly.

[0195] It should be emphasized that the above description is merely a preferred embodiment of this application. Those skilled in the art should understand that various changes, modifications, substitutions, and variations can be made to these embodiments within the concept and principles of this application. These include, but are not limited to:

[0196] In terms of appearance, depending on the overall vehicle design requirements, the structure of decorative bubble tube 406A or decorative lip 406B can be selected.

[0197] In the part that fits with the door sheet metal, the structure 4076 of the fourth lip extending to cover the sheet metal can be selected, or the structure of the fourth lip root 4073 can be selected, or an equivalent structure combining the fourth lip extension 4074 and the sixth lip 409 can be selected.

[0198] In the main sealing part, a fourth lip 407 can be set separately, or a seventh lip 410 can be added on the basis to form a multi-seal;

[0199] In the lifting slider section, any one of the following can be selected, such as the first slider 502, the second slider 503, the B-pillar slider, or the A / C-pillar slider, depending on different guiding and compensation requirements, and can be used in conjunction with a circular slider, a semi-circular slider, an elliptical slider, or a slider of any other geometric shape.

[0200] Those skilled in the art will understand that the technical features disclosed in the different embodiments described above can be arranged and combined arbitrarily without creating contradictions. All variations, modifications, and combinations based on the core concept of this application should fall within the protection scope claimed by this application.

[0201]

Claims

1. An asymmetrically directed zero-order differential seal system, characterized in that, The application relates to a sealing system for a vehicle window, comprising: a sealing strip (4) defining an internal cavity; a sliding mechanism slidably accommodated in the internal cavity of the sealing strip (4) and used for fixed connection with a vehicle window glass (601); wherein the sliding mechanism forms at least one guiding reference side and one flexible compensation side in the sealing system; on the guiding reference side, the sliding mechanism forms a precise fit with the internal cavity of the sealing strip (4) in at least one lateral dimension, so as to control the lateral gap between the sliding mechanism and the internal cavity within a preset small range, so as to limit the lateral displacement of the vehicle window glass (601); on the flexible compensation side, a preset compensation gap exists between the sliding mechanism and the internal cavity of the sealing strip (4), so as to absorb tolerances.

2. The system of claim 1, wherein, The sliding mechanism comprises: a guiding slider arranged on the guiding reference side and integrally provided with a first positioning protrusion (506) for reducing the lateral gap between the guiding slider and the internal cavity; a compensation slider arranged on the flexible compensation side and having a main profile designed to form the preset compensation gap between the compensation slider and the internal cavity.

3. The system of claim 2, wherein, The compensation slider is further provided with a tolerance absorption head (507) formed with at least one gap forming surface configured to form the preset compensation gap between the tolerance absorption head (507) and the internal cavity.

4. The system of claim 1, wherein, The sliding mechanism comprises a slide column, and the cross-sectional shape of the slide column is an ellipse (509) with a long axis arranged along the Y direction, so as to adapt to the height of the internal cavity pulled in the Y direction and provide guiding support.

5. The system of claim 1, wherein, The sealing strip (4) has a uniform cross-sectional shape on the guiding reference side and the flexible compensation side.

6. The system of claim 1, wherein, The sealing strip (4) is further integrally provided with an inwardly extending shielding part (412) on the inner cavity wall surface; the shielding part (412) is located on one side of the inner cavity opening and is configured to overhang above the sliding contact area between the sliding mechanism and the inner cavity wall surface of the sealing strip (4), so as to shield the wear marks on the inner cavity wall surface caused by sliding friction.

7. The system of claim 6, wherein, The main profile of the sliding mechanism is provided with an avoiding gap; when the sliding mechanism is accommodated in the internal cavity of the sealing strip (4), the shielding part (412) at least partially extends into the avoiding gap, and a non-contact fit or elastic contact fit is formed between the shielding part (412) and the sliding mechanism.

8. The system of claim 7, wherein, The sliding mechanism further comprises a first auxiliary supporting protrusion (510); the first auxiliary supporting protrusion (510) is located at the bottom of the sliding mechanism and is configured to abut against the inner cavity bottom of the sealing strip (4), so as to limit the torsion of the sliding mechanism around the longitudinal axis of the sliding mechanism and transfer the sliding supporting force of the sliding mechanism to the inner cavity bottom, thereby maintaining the relative position between the shielding part (412) and the avoiding gap.

9. The system of any one of claims 6 to 8, wherein, The sliding mechanism on the guiding reference side and the flexible compensation side is provided with the avoiding gap for accommodating the shielding part (412); The avoiding gap on the sliding mechanism of the flexible compensation side has a preset transverse width to allow the sliding mechanism to float transversely relative to the shielding part (412) to absorb tolerances.

10. The system of claim 1, wherein, The system further comprises a guide rail (3) on which the sealing strip (4) is installed, and an inwardly protruding limiting rib (304) is arranged on the inner wall of the guide rail (3); The outer side of the sealing strip (4) is provided with a fifth lip (408) extending outwardly; When the sealing strip (4) is installed in the guide rail (3), the fifth lip (408) passes over the limiting rib (304) and is clamped into the groove behind the limiting rib (304), thereby forming a reverse locking with the limiting rib (304).

11. The system of claim 1, wherein, A through hole (413) extending in the longitudinal direction is arranged at the corner of the sealing strip (4); A glass fiber rope is arranged in the through hole (413) to inhibit the longitudinal elongation of the sealing strip (4); Meanwhile, the through hole (413) constitutes a folding hinge point of the sealing strip (4) during the forming process.

12. The system of claim 1, wherein, The sealing strip (4) further comprises: A corrugated area (414) arranged at the neck area where the body of the sealing strip (4) is connected with an appearance decoration structure, and the surface of the corrugated area is in a wave shape or a zigzag shape; A plurality of sealing ribs (415) arranged on the lower surface of the body of the sealing strip (4) for lapping the extension platform (303) of the guide rail, so as to build an air gap between the sealing strip (4) and the extension platform (303).

13. The system of claim 1, wherein, A first lip (403) is arranged on the outer side of the bottom of the sealing strip (4), and the first lip (403) comprises an outer side supporting lip and an inner side load adjusting lip; The length of the inner side load adjusting lip is shorter than the length of the outer side supporting lip, so as to balance the stress of the bottom of the sealing strip (4) and prevent the bottom from being warped.

14. The system of claim 1, wherein, The sliding mechanism further comprises a second auxiliary supporting protrusion (511); The second auxiliary supporting protrusion (511) is arranged on the lower surface of the slide column connecting part (505) of the sliding mechanism, and the protruding direction is towards the upper wall surface of the inner cavity of the sealing strip (4); so as to abut against the upper wall surface when the sealing strip (4) is deformed, and prevent the body of the sealing strip (4) from floating upwards.

15. The system of claim 1, wherein, The bottom of the sealing strip (4) is configured as a flat bottom supporting structure; At least one supporting part (402) is arranged on the bottom surface of the sealing strip (4), and the supporting part (402) is configured to be directly supported on the bottom surface of the guide rail (3); and the bottom of the guide rail (3) is a flat plane, and the outer side of the bottom of the sealing strip (4) does not comprise a lip structure extending downwardly into the guide rail groove.

16. The system of claim 1, wherein, The sealing strip (4) further comprises an appearance decoration structure selected from: A hollow decorative bubble tube (406A); or A cantilever-shaped decorative lip (406B) without rigid support.

17. The system of claim 1, wherein, The sealing strip (4) further comprises at least one main sealing lip (407) and one auxiliary sealing lip (410); wherein the auxiliary sealing lip (410) is configured to: Elastically abut against the surface of the vehicle window glass (601) when the sliding mechanism has not reached its longitudinal position; And, when the sliding mechanism reaches its longitudinal position, the profile of the sliding mechanism forces an elastic deformation to occur and, in turn, a sliding contact with the lower surface of the sliding mechanism.

18. The system of claim 1, wherein, The sealing strip (4) further comprises an integrally formed extended function structure selected from at least one of the following group: A C-shaped covering cavity for covering and sealing the end of the door panel (9); A structural interface for overlapping or clamping with the end of the interior trim panel (7); and A sixth lip (409) that cooperates with a portion of the main sealing lip (407) to clamp the interior trim panel (7) up and down.

19. A vehicle door, characterized by A non-symmetrical guided zero-order difference sealing system comprising any one of claims 1 to 18.

20. An automobile characterized by comprising: A vehicle door comprising the vehicle door of claim 19.

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