A zero-gap door sealing system, a door and a vehicle

Abstract

The application relates to the technical field of automobile accessories, and discloses a zero-gap door sealing system, a door and an automobile, which aims to solve the problems of complex structure, poor NVH performance and difficulty in realizing zero gap caused by the separation of the guiding and sealing functions of a traditional door. The system comprises a sealing strip made of elastic material and a rigid sliding mechanism, the sealing strip comprises a body, a multi-lip structure, a wear-resistant layer in a cavity and an external sealing element, the multi-lip structure is bidirectionally clamped and positioned with a guide rail; the sliding mechanism is partially accommodated in the cavity of the sealing strip and linearly slides in contact with the wear-resistant layer, and the end part is fixed with a glass. The architecture enables the glass to be flush with an exterior trim panel, realizes zero gap, simultaneously simplifies the structure, reduces the cost and weight, improves the sealing reliability and NVH performance, and meets the aesthetic and performance requirements of modern automobiles.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, specifically to a door sealing system with zero surface difference. Background Technology

[0002] Traditional automotive window regulator mechanisms typically consist of separate, independent components that function to guide the sliding of the window glass and seal any gaps in the window. The most common traditional structure involves a rigid guide rail made of metal or hard plastic installed inside the door. The glass or its support bracket slides within this rail to ensure the trajectory and stability of its lifting movement. Simultaneously, a separate sealing strip (often called a glass groove) made of rubber or elastomer is installed around the window perimeter. Its main functions are to fill gaps, provide waterproofing and dustproofing, and offer a certain degree of sealing.

[0003] However, this traditional architecture, which completely separates the guiding and sealing functions, has increasingly highlighted its inherent defects when facing the increasingly stringent requirements of the modern automotive industry for performance, cost, and aesthetics. These defects include: 1. Independent rigid guide rails and sealing strips require their own installation structures and positioning features, which not only increases the number and weight of the entire door system's parts, but also makes the assembly process more complicated, thereby leading to an increase in manufacturing costs and supply chain management costs.

[0004] 2. The contact between rigid guide rails and sliding components easily generates vibration and noise, posing a challenge to the overall NVH (noise, vibration, and harshness) performance of the vehicle. Furthermore, achieving an effective seal between the rigid guide rail and the glass often requires a complex sealing strip with significant compression, which in turn increases the operating force required for raising and lowering the glass. More importantly, this structure naturally creates inherent structural gaps and step differences between the window glass and the exterior body panels, becoming a major design bottleneck and making it extremely difficult to achieve a streamlined aesthetic effect with "zero surface difference" or "perfect flatness" on the side of the vehicle.

[0005] To address these issues, the industry has proposed several improvements, such as optimizing the cross-sectional design of the sealing strip and using composite materials. However, most solutions have failed to fundamentally overcome the structural complexity and aesthetic limitations caused by the coexistence of rigid guidance and independent sealing. Especially for the design goal of "zero surface difference," existing structures often separate the guiding and sealing functions, making it difficult to achieve organic integration of the two at the system level, and thus failing to completely eliminate the step difference caused by traditional construction.

[0006] This application addresses the problems in existing technologies, such as structural complexity, limited sealing performance, and difficulty in achieving a "zero surface difference" effect due to the separation of guiding and sealing functions. It proposes a novel design for a vehicle door sealing system. Utility Model Content

[0007] In response to the technical problems of existing technologies, such as complex structure, limited performance, and inability to achieve zero-surface-difference aesthetic effect due to the separation of guiding and sealing functions, this application provides a brand-new design solution for a vehicle door sealing system.

[0008] A zero-surface-difference door sealing system, comprising: A sealing strip, said sealing strip being made of an elastic material and defining at least one inner cavity extending along its length, said sealing strip comprising: a sealing strip body; Multiple lip structures extending from the sidewall of the sealing strip body are configured to form bidirectional clamping and positioning with the sidewall of a guide rail. A wear-resistant layer is disposed on the inner wall of the cavity; and An external sealing element is integrally formed from the upper part of the sealing strip body; And a sliding mechanism, which is configured as follows: At least a portion is housed within the inner cavity and forms a sliding contact with the wear-resistant layer; and It has at least one end that is fixedly connected to a glass; The sliding mechanism is housed within the internal cavity of the system architecture, enabling a flush fit between the glass and an outer trim panel.

[0009] Specifically, the sliding mechanism includes a cylindrical sliding column and a slider connected to the sliding column, wherein the sliding column and the wear-resistant layer form a line contact extending along the length direction.

[0010] Specifically, the slider is selected from at least one of the following groups: A second slider, comprising an upwardly extending U-shaped adhesive receiving groove configured to receive adhesive fixing the glass; and The first slider has an outer contour that gradually expands from its connecting part toward its adhesive part.

[0011] Specifically, the external sealing element is a hollow decorative bubble tube made of foamed rubber; wherein, The decorative bubble tube is pre-compressed after installation, and its outer surface that slides in contact with the glass is covered with a wear-resistant layer.

[0012] Specifically, the external sealing element is a flexible decorative lip; wherein, The decorative lip is constructed as a cantilever structure without rigid support. Furthermore, the decorative lip has a pre-set decorative lip protrusion and a decorative lip concave portion, and the protrusion is configured to elastically deform toward the concave portion when it is pressed.

[0013] Specifically, the sealing strip further includes a fourth lip integrally extending from its sealing strip body toward the interior side of the vehicle, the tip of the fourth lip being configured to elastically abut against the inner surface of the glass; and, The guide rail includes an extension platform extending outward from its obstructing protrusion, and the bottom extension portion of the fourth lip is supported on the extension platform to form a structural interface for overlapping or snapping on an interior panel.

[0014] Specifically, the sealing strip further includes a fourth lip that integrally extends from its sealing strip body toward the interior side of the vehicle; and, The sealing strip also integrally extends into a sixth lip; thus, The sixth lip edge and a portion of the fourth lip edge work together vertically to clamp an interior panel, forming a double seal.

[0015] Specifically, the sealing strip further includes a fourth lip that integrally extends from its sealing strip body toward the interior side of the vehicle; and, The lower structure of the fourth lip extends integrally to form a C-shaped receiving cavity for covering and sealing the end of a door sheet metal panel.

[0016] A vehicle door includes a door frame, a retractable glass, and the aforementioned zero-face difference door sealing system.

[0017] An automobile includes a body, an exterior panel disposed on the body, and at least one of the aforementioned doors.

[0018] Beneficial effects 1. The technical solution of this application breaks the traditional functional separation architecture of "rigid guide rail + independent sealing strip". It integrates the functions of glass guiding (sliding mechanism), sealing (multiple lips, external sealing elements) and positioning (bidirectional clamping of lips and guide rail) into the system composed of sealing strip and sliding mechanism. It eliminates the need for independent rigid guide rail and additional positioning components, significantly reducing the number of parts and total weight of the door system, simplifying the assembly process (such as interior panels can be directly overlapped / clamped onto the interface formed by the sealing strip and the guide rail extension platform without additional brackets), and reducing manufacturing costs, supply chain management costs and assembly labor costs.

[0019] 2. The decorative bubble tube 406A is pre-compressed and abuts against the glass and the outer trim panel. The decorative lip 406B has a thin structure that reduces the visible gap. Both of them can eliminate the inherent step difference between the glass and the outer trim panel in the traditional structure, forming a visually continuous and flat side appearance of the car body, meeting the aesthetic requirements of modern cars for "pure flat streamline" and enhancing the high-end quality of the product.

[0020] 3. The sealing strip is clamped to the side wall of the guide rail in both directions through multiple lip structures (first lip 403, second lip 404, third lip 405, and fifth lip 408), so as to achieve stable positioning and sealing between the sealing strip and the guide rail; the fourth lip 407 elastically abuts against the inner side of the glass, and the external sealing element (decorative bubble tube / lip) abuts against the outer side of the glass, forming a "double seal inside and outside", which effectively prevents rainwater and dust from entering.

[0021] 4. The sealing strip structure can be flexibly adapted to the needs of different vehicle models: for example, the interior panel is clamped by the upper and lower sides of the fourth lip and the sixth lip to solve the problem of instability of the interior panel under large installation gaps; the C-shaped receiving cavity formed by the extension of the lower part of the fourth lip covers and seals the end of the door sheet metal without the need for additional interior panel covering, adapting to the structure of vehicle models without independent interior panels and simplifying the design of the door assembly.

[0022] The external sealing element offers two options (decorative bubble tube 406A / decorative lip 406B): the decorative bubble tube is suitable for scenarios with high sealing rigidity requirements, while the decorative lip is more conducive to lightweighting (the thin structure reduces the overall size of the sealing strip), saving door space, providing greater design freedom for other door components, and can adapt to the needs of different vehicle platforms. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the first sealing system of this application.

[0025] Figure 2 This is a schematic diagram of the sealing strip structure in the first sealing system of this application.

[0026] Figure 3 This is a schematic diagram of the sliding mechanism in the first sealing system of this application.

[0027] Figure 4 This is a schematic diagram of the overall structure of the second sealing system of this application.

[0028] Figure 5 This is a schematic diagram of the overall structure of the third sealing system of this application.

[0029] Figure 6 This is a schematic diagram of the sealing strip structure of the third sealing system of this application.

[0030] Figure 7 This is a schematic diagram of the overall structure of the fourth sealing system of this application.

[0031] Figure 8 This is a schematic diagram of the overall structure of the fifth sealing system of this application.

[0032] Figure 9 This is a schematic diagram of the structural deformation of the fifth sealing system of this application.

[0033] Figure 10 This is a schematic diagram of the sliding mechanism structure of the fifth sealing system of this application.

[0034] Figure 11 This is a schematic diagram of the overall structure of the sixth sealing system of this application.

[0035] 3. Guide rail; 301. Limiting protrusion; 302. Obstruction protrusion; 303. Extension platform.

[0036] 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. Decorative lip 4068. First end of decorative lip; 407. Fourth lip; 4071. First concave part of fourth lip; 4072. First convex part of fourth lip; 4073. Root of fourth lip; 4074. Second convex part of fourth lip; 4075. Second concave part of fourth lip; 4076. Extension of fourth lip; 408. Fifth lip; 409. Sixth lip; 410. Seventh lip; 4101. Concave part of seventh lip; 4102. Convex part of seventh lip.

[0037] 501, Sliding column; 502, First slider; 5021, First slider connecting part; 5022, First slider body; 5023, First slider bonding part; 504, Adhesive; 505, Sliding column connecting 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 pattern.

[0038] 601. Glass; 602. Exterior trim panel.

[0039] 7. Interior trim panels; 8. Wear-resistant layer; 9. Door sheet metal. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] In the description of this invention, 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. They are only for the convenience of describing this invention and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] 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.

[0044] 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.

[0045] Please see the appendix Figure 1 and 2 , attached Figure 1 and 2 This is a schematic diagram 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.

[0046] 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.

[0047] 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.

[0048] Please continue to refer to the appendix. Figure 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] Please see Figure 3 To achieve guidance and drive, a sliding mechanism is enclosed inside the sealing strip body 401. 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 from 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 from plastic, or it can be a 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 within the C-shaped cavity of the sealing strip 4, forming a line contact with its upper and lower inner walls extending along its length. This double-guided contact method reduces the frictional resistance of the sliding mechanism during sliding, allowing 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.

[0053] 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.

[0054] Please see Figure 4 In one specific embodiment of the present invention, 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 incorporates 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 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 still cover the guide rail 3, and there is a smooth transition between the lip structure and the interior panel 7.

[0055] Please see Figures 5-7 To enhance the overall aesthetic integration of the vehicle design, reduce the gaps between body components (GAP), and decrease the operating force required for window operation, this invention 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.

[0056] 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.

[0057] 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.

[0058] 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 invention also provides an optimized sealing strip inner cavity structure. Figures 1-7 In this design, the fourth lip 407 is the main component that makes sliding friction contact with the glass side, and it is a single-layer inner lip design. However, this single-layer inner 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 reach 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 experience 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-layer 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 both functional performance and visual aesthetics.

[0059] 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.

[0060] 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 areas it does not cover. Therefore, we extend a seventh lip 410 upwards on the body of the sealing strip 401 and replace the previous first slider 502 with a new second slider 503. Specifically, we see... Figure 8 The seventh lip 410 includes a seventh lip protrusion and 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, which realizes the stable guidance and sealing function for the sliding mechanism and the glass 601.

[0061] Please combine Figure 9 Understanding: 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. In addition, when the window is lowered, the seventh lip 410 conceals the mechanical structure and the break in the sliding mechanism below, filling the visual gap that might otherwise appear, presenting the user with a complete, continuous, high-quality appearance, thereby satisfying consumers' pursuit of exquisite design aesthetics.

[0062] Please see the appendix 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] Please see Figure 11 In certain vehicle platforms or body structure designs, the flange edge of the door sheet metal 9 may be wide, and no independent 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 solve this specific technical problem, this application provides a sealing strip structure with an adaptive design.

[0067] 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.

[0068] 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.

[0069] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A zero-profiie vehicle door sealing system, characterized by, include: A sealing strip (4), said sealing strip being made of an elastic material and defining at least one inner cavity extending along its length, said sealing strip comprising: a sealing strip body (401); Multiple lip structures (403, 404, 405, 408) extending from the sidewall of the sealing strip body (401) are configured to form bidirectional clamping and positioning with the sidewall of a guide rail (3). A wear-resistant layer (8) is disposed on the inner wall of the cavity; and An external sealing element is integrally formed from the upper part of the sealing strip body (401); And a sliding mechanism, which is configured as follows: At least a portion is housed within the inner cavity and forms a sliding contact with the wear-resistant layer (8); and It has at least one end that is fixedly connected to a glass (601); The sliding mechanism is housed within the internal cavity of the system architecture, enabling the glass (601) and an outer trim panel (602) to achieve a flush fit.

2. The zero-surface-difference door sealing system according to claim 1, characterized in that, The sliding mechanism includes a cylindrical slide (501) and a slider connected to the slide (501), wherein the slide (501) and the wear-resistant layer (8) form a line contact extending along the length direction.

3. The zero-profiie door seal system of claim 2, wherein, The slider is selected from at least one of the following groups: A second slider (503) includes an upwardly extending U-shaped adhesive receiving groove configured to receive adhesive (504) for fixing the glass (601); and A first slider (502) has an outer contour that gradually expands from its connecting part (5021) toward its adhesive part (5023).

4. The zero-surface-difference door sealing system according to claim 1, characterized in that, The external sealing element is a hollow decorative bubble tube (406A) made of foamed rubber; wherein... The decorative bubble tube (406A) is pre-compressed after installation, and its outer surface that slides in contact with the glass (601) is covered with a wear-resistant layer (8).

5. The zero-surface-difference door sealing system according to claim 1, characterized in that, The external sealing element is a flexible decorative lip (406B); wherein, The decorative lip (406B) is constructed as a cantilever structure without rigid support. Furthermore, the decorative lip (406B) is provided with a decorative lip protrusion (4065) and a decorative lip recess (4067), the protrusion being configured to elastically deform toward the recess when it is pressed.

6. The zero-surface-difference door sealing system according to claim 1, characterized in that, The sealing strip (4) further includes a fourth lip (407) integrally extending from its sealing strip body (401) toward the interior side of the vehicle, the top end of the fourth lip (407) being configured to elastically abut against the inner surface of the glass (601); and, The guide rail (3) includes an extension platform (303) extending outward from its obstruction protrusion (302), and the bottom extension of the fourth lip (407) is supported on the extension platform to form a structural interface for overlapping or mounting an interior panel (7).

7. The zero-surface-difference door sealing system according to claim 1, characterized in that, The sealing strip also includes a fourth lip (407) integrally extending from its sealing strip body (401) toward the interior side of the vehicle; and, The sealing strip also integrally extends a sixth lip (409); thus, The sixth lip (409) and a portion of the fourth lip (407) work together to clamp an interior panel (7) to form a double seal.

8. The zero-surface-difference door sealing system according to claim 1, characterized in that, The sealing strip also includes a fourth lip (407) integrally extending from its sealing strip body (401) toward the interior side of the vehicle; and, The lower structure of the fourth lip (407) extends integrally to form a C-shaped receiving cavity for covering and sealing the end of a door sheet metal (9).

9. A vehicle door, characterized by It includes a door frame, a retractable glass (601), and a zero-surface-difference door sealing system as claimed in any one of claims 1 to 8.

10. An automobile characterized by comprising: It includes a vehicle body, an exterior trim panel (602) disposed on the vehicle body, and at least one door as described in claim 9.

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