Mounting rail for a vehicle door system

Abstract

The application discloses a mounting guide rail of a vehicle door system and belongs to the technical field of automobile parts, which comprises a guide rail body, the guide rail body is in an overall L-shaped structure, the guide rail body comprises an integrally-formed bottom plate and a side plate, the bottom plate is in an up-down bent plate body structure, a plurality of downward recessed mounting grooves are arranged on the bottom plate, buckle pieces are arranged at the mounting grooves, the bottom plate is fixed with automobile sheet metal through the buckle pieces, the top surface of the side plate is outwardly folded to form a flange, a plurality of mounting seats are arranged on the side plate, the mounting seats are arranged along the direction of the bottom plate, the bottom surface of the mounting seat is attached to the automobile sheet metal, the top surface of the mounting seat is attached to a decorative plate, fastening pieces are arranged on the mounting seat, and the fastening pieces are connected with the decorative plate, the side plate and the automobile sheet metal. The structure of the guide rail body is optimized, the rigidity and the strength are improved, the decorative plate, the side plate and the sheet metal are integrally connected through the mounting seat and the fastening piece, and the assembly precision and the connection reliability are improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a mounting rail for a door system. Background Technology

[0002] In car door systems, the mounting rails for weatherstripping are typically located on the door trim panel. As a visible component of the door system, the door trim panel not only serves basic functions such as beautifying the car body and concealing the internal structure, but also needs to be precisely assembled with multiple components such as weatherstripping, window glass, and automotive sheet metal.

[0003] Currently, most car door trim panels are one-piece structures. During assembly, the sealing strips and glass guide channels, among other accessories, must be pre-installed into the panel's mounting slots before the panel is fixed to the door sheet metal. Because the trim panel itself obstructs the assembly area, the installation space for flexible components like sealing strips is limited, making operation inconvenient and impacting production line efficiency. Furthermore, when a part of a one-piece door trim panel is damaged, the entire panel must be replaced, resulting in high maintenance costs.

[0004] To address the aforementioned issues, some solutions have proposed a split design, such as the Chinese patent application "A Zero-Step Lifting Structure for a Car Door Glass and a Car Door Having the Same," application number: CN202320161513.5. This design includes: a car door glass; a plastic guide rail, which is mounted on the car door window frame, has an opening extending outwards in the vehicle width direction, and extends along the vehicle's vertical direction; a guide member, generally Z-shaped, having a first component and a second component integrated as a whole, the first component being fixed to the inner surface of the car door glass in the vehicle width direction, the two ends of the second component extending inwards in the vehicle width direction to form two first protrusions, and the two ends of the second component extending outwards in the vehicle width direction to form two second protrusions, the guide member slidingly engaging with the plastic guide rail to achieve lifting and lowering of the car door glass along the plastic guide rail; a first decorative panel mounted on the surface of the car door window frame and a second decorative panel mounted on the surface of the first decorative panel, the outer surface of the car door glass in the vehicle width direction being flush with the outer surface of the second decorative panel.

[0005] Traditional guide rails often employ closed or semi-closed guide groove structures with small openings. During assembly, the sealing strip must be forcibly deformed and inserted, making the process difficult and prone to damaging the sealing strip itself. While the aforementioned improved solution uses an open U-shaped groove to enhance installation convenience, the sidewalls of the U-shaped groove lack direct positioning and mating features with the decorative panel body, making the guide rail prone to movement or misalignment after installation. Especially under dynamic vehicle conditions, even slight relative displacement between the decorative panel and the guide rail can lead to unstable sealing strip compression, increased risk of abnormal noise, and other problems, affecting the overall vehicle NVH performance and sealing durability. Utility Model Content

[0006] The technical problem to be solved by this application is to provide an installation guide rail for a car door system, which optimizes the structural design of the guide rail body, improves rigidity and strength, and, together with the mounting base and fasteners, realizes the integrated connection of the decorative panel, side panel and sheet metal, thereby improving assembly accuracy and connection reliability.

[0007] The technical solution adopted in this application is as follows: a door system mounting rail, including a rail body, the rail body having an overall L-shaped structure, the rail body including an integrally formed base plate and side plates, the base plate being a plate structure bent vertically, the base plate having multiple downwardly recessed mounting grooves, the mounting grooves having fasteners, the base plate being fixed to the automotive sheet metal by the fasteners, the top surface of the side plate being folded outward to form a flange, the side plate having multiple mounting seats, the mounting seats being arranged along the direction of the base plate, the bottom surface of the mounting seats being in contact with the automotive sheet metal, the top surface of the mounting seats being in contact with the decorative panel, the mounting seats being equipped with fasteners, the fasteners connecting the decorative panel, the side plate and the automotive sheet metal.

[0008] Compared with existing technologies, the advantages of this application are as follows: First, the guide rail body adopts an L-shaped structure with the base plate and side plate integrally formed. The base plate and side plate form a rigid whole, avoiding the connection loosening problem that may occur with split structures, and improving structural strength and assembly efficiency. The base plate adopts a plate structure with vertical bending, which improves the bending stiffness of the base plate through deformation strengthening, enhances the load-bearing capacity with the same material thickness, and can better fit the curved shape of the body sheet metal, adapting to the installation space requirements of the door system. The top surface of the side plate is folded outward to form a flange, which significantly improves the bending and torsional resistance of the side plate, prevents the side plate from deforming under stress, and ensures the geometric stability of the guide rail body during long-term use.

[0009] Secondly, the mounting base is arranged along the base plate and its top and bottom surfaces are respectively attached to the decorative panel and the sheet metal, achieving precise positioning and support between layers. This provides a stable mounting reference surface for the decorative panel and helps control the consistency of the gap between the decorative panel and the sheet metal. The fasteners connect the decorative panel, side panel, and sheet metal into a single integrated structure, eliminating the error accumulation caused by separate independent assembly and the risk of relative displacement under vibration conditions. This directly improves the system's assembly accuracy, connection reliability, and long-term durability.

[0010] Finally, in addition to the mounting brackets on the side panels that work with the fasteners to secure the body panels to the automotive sheet metal, the base plate of this application also has multiple recessed mounting grooves. These grooves provide mounting positions for the fasteners, which connect the base plate to the automotive sheet metal. In another position and another dimension, the automotive sheet metal and the mounting guide rail form an integrated force-bearing system, effectively eliminating the risk of fretting wear and fatigue failure under dynamic working conditions.

[0011] In this application, for ease of description, the accompanying drawings are used.Figure 1 The description is based on a reference point, but this does not imply the actual orientation of the product during use.

[0012] In some embodiments of this application, the base plate includes a first segment, a second segment, a third segment, and a fourth segment connected in sequence, the top surface of the base plate is in contact with the sealing strip, and the inner surface of the side plate is in contact with the sealing strip.

[0013] The top surface of the base plate and the inner side surface of the side plate together form an L-shaped support surface, which realizes bidirectional limiting contact of the sealing strip. Compared with single-sided contact, it can more effectively constrain the degree of freedom of the sealing strip, prevent the sealing strip from moving or loosening in the guide rail during vehicle operation, and improve sealing stability.

[0014] In some embodiments of this application, the cross-section of the first segment and the cross-section of the third segment are located on the same horizontal plane, and the second segment is recessed and disposed below the plane where the first segment and the second segment are located.

[0015] The first and third sections remain on the same plane to ensure the continuity of the sealing strip installation reference surface, while the recessed second section creates clearance space, allowing the guide rail to cross or accommodate protruding structures on the body sheet metal, thus enhancing its adaptability to the complex curved surface shape of the door sheet metal.

[0016] In some embodiments of this application, the top surfaces of the second and third segments are regularly arranged with multiple reinforcing plates. The reinforcing plates are arranged along the width direction of the base plate, perpendicular to the top surface of the base plate, and the multiple reinforcing plates are arranged parallel to each other.

[0017] In local areas of the base plate, vertically arranged reinforcing plates form a deformation-strengthening structure, which significantly improves the bending stiffness of the area without increasing the thickness of the plate. At the same time, the regularly arranged reinforcing plates can provide multi-point uniform support for the sealing strip, avoiding excessive local pressure deformation of the sealing strip and extending its service life.

[0018] In some embodiments of this application, the fourth segment is connected to the outside of the third segment, the fourth segment is connected to the side plate, the fourth segment is set below the surface of the second segment, and the mounting groove is recessed at the fourth segment.

[0019] The mounting groove and its fasteners completely avoid the sealing strip installation area, ensuring the flatness of the contact surface between the base plate and the sealing strip, eliminating the risk of assembly interference, and maintaining the overall compactness of the guide rail structure.

[0020] In some embodiments of this application, the mounting base is positioned below the flange, the top surface of the mounting base is higher than the top surface of the fourth segment, and the bottom surface of the mounting base is lower than the bottom surface of the fourth segment.

[0021] The top and bottom surfaces of the mounting bracket protrude from the upper and lower surfaces of the base plate, ensuring that the decorative panel and the automotive sheet metal can simultaneously adhere to the mounting bracket, forming a clear three-layer structural positioning relationship, and providing a precise benchmark for controlling the interlayer gap between the decorative panel, guide rail, and sheet metal.

[0022] In some embodiments of this application, the connecting surface between the fourth segment and the third segment is referred to as the connecting surface. A plurality of first buckles are arranged on the connecting surface, and the plurality of first buckles are spaced apart. A first slot is provided below the first buckle, and the first slot penetrates one edge of the fourth segment.

[0023] A through groove is opened at the root of the undercut, which enhances the elastic deformation capacity during snap-fitting. This reduces the pushing force during the assembly of the sealing strip, avoids damage to the sealing strip lip, and provides reliable elastic retention force after assembly.

[0024] In some embodiments of this application, the side plate is provided with a plurality of second buckles, the plurality of second buckles are spaced apart, and a second slot is provided below the second buckle, the second slot penetrating the other edge of the fourth segment.

[0025] The side plate and bottom plate undercuts form a multi-point fixing structure with spatial interlacing, which constrains the sealing strip from the side and improves the sealing strip's resistance to pull-out; the groove below also gives the undercuts elasticity, taking into account both assembly convenience and connection reliability.

[0026] In some embodiments of this application, the first buckle and the second buckle are staggered.

[0027] The first and second undercuts act on the sealing strip. The staggered arrangement of the undercuts distributes the stress points along the length of the sealing strip, avoiding stress concentration on the same cross-section, preventing excessive local compression or damage to the sealing strip, achieving a more uniform fixing effect, and extending the service life of the sealing strip.

[0028] In some embodiments of this application, there is a gap between the flange and the decorative panel. This reserved assembly gap can absorb manufacturing tolerances and accumulated assembly errors, avoiding rigid interference; at the same time, it provides displacement compensation space for thermal expansion and contraction caused by alternating hot and cold temperatures during vehicle operation, reducing thermal stress and the resulting frictional noise, and improving NVH performance.

[0029] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0030] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0031] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ; Figure 3 This is a structural diagram of the assembled state of this application; Figure 4 This is a structural diagram showing the usage state of this application.

[0032] The specific annotations in the attached drawings are as follows: 1. Guide rail body; 2. Base plate; 3. Side plate; 4. Mounting groove; 5. Fastener; 6. Automotive sheet metal; 7. Flanged edge; 8. Mounting base; 10. Decorative panel; 11. Fastener; 12. First section; 13. Second section; 14. Third section; 15. Fourth section; 16. Sealing strip; 17. Reinforcing plate; 18. Connecting surface; 19. First undercut; 20. First groove; 21. Second undercut; 22. Second groove. Detailed Implementation

[0033] The present application will now be described in detail with reference to the accompanying drawings.

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] A door system mounting rail, as shown in Embodiment 1 Figure 1 , Figure 2As shown: The guide rail body is L-shaped and comprises an integrally formed base plate and side plates. The base plate is a vertically bent plate structure. The base plate and side plates form a rigid whole, avoiding the loosening problems that may occur with separate structures, thus improving structural strength and assembly efficiency. The vertically bent plate structure of the base plate enhances its bending stiffness through deformation reinforcement, increasing its load-bearing capacity with the same material thickness. It also better conforms to the curved shape of the vehicle body sheet metal, adapting to the installation space requirements of the door system. The top surface of the side plates is folded outwards to form a flange, significantly improving the bending and torsional resistance of the side plates, preventing deformation under stress, and ensuring the geometric stability of the guide rail body during long-term use.

[0036] The top surface of the side panel is folded outward to form a flange. Multiple mounting seats are provided on the side panel, arranged along the direction of the base plate. The bottom surface of the mounting seat is in contact with the automotive sheet metal, and the top surface is in contact with the decorative panel. Fasteners are fitted on the mounting seats, connecting the decorative panel, side panel, and automotive sheet metal. This achieves precise positioning and support between layers, providing a stable mounting reference surface for the decorative panel and facilitating the control of the gap consistency between the decorative panel and the sheet metal. The fasteners connect the decorative panel, side panel, and sheet metal into a unified load-bearing structure, eliminating the error accumulation and relative displacement risks caused by separate independent assembly under vibration conditions, directly improving the system's assembly accuracy, connection reliability, and long-term durability.

[0037] The base plate is provided with multiple downward recessed mounting grooves, and the mounting grooves are equipped with fasteners. The base plate is fixed to the automotive sheet metal through the fasteners. The fasteners realize the connection between the base plate and the automotive sheet metal, and make the automotive sheet metal and the mounting guide rail form an integrated force system in another position and another dimension, effectively eliminating the risk of fretting wear and fatigue failure under dynamic working conditions.

[0038] In this application, for ease of description, the accompanying drawings are used. Figure 1 The description is based on a reference point, but this does not imply the actual orientation of the product during use.

[0039] Example 2, as Figures 1 to 4 As shown, the base plate comprises a first section, a second section, a third section, and a fourth section connected sequentially. The top surface of the base plate is in contact with the sealing strip, and the inner surface of the side plate is in contact with the sealing strip. The top surface of the base plate and the inner surface of the side plate together form an L-shaped support surface, achieving bidirectional limiting contact of the sealing strip. Compared with single-sided contact, this more effectively constrains the degree of freedom of the sealing strip, preventing it from shifting or loosening within the guide rail during vehicle operation, thus improving sealing stability.

[0040] The cross-sections of the first and third segments are located on the same horizontal plane, while the second segment is recessed and positioned below the planes containing the first and second segments. The coplanar arrangement of the first and third segments ensures the continuity of the sealing strip mounting reference plane, while the recessed second segment creates clearance space, allowing the guide rail to cross or accommodate protruding structures on the vehicle body sheet metal, thus enhancing its adaptability to complex curved surfaces of the door sheet metal.

[0041] The top surfaces of the second and third sections are regularly arranged with multiple reinforcing plates. These reinforcing plates are positioned along the width of the base plate, perpendicular to its top surface, and arranged parallel to each other. In localized areas of the base plate, the vertically arranged reinforcing plates create a deformation-strengthening structure, significantly improving the bending stiffness of those areas without increasing the plate thickness. Simultaneously, the regularly arranged reinforcing plates provide multi-point, evenly distributed support for the sealing strip, preventing excessive localized deformation and extending its service life.

[0042] The fourth segment connects to the outside of the third segment and is connected to the side plate. The fourth segment is positioned lower than the surface of the second segment, and the mounting groove is recessed at the fourth segment. The mounting groove and its fasteners completely avoid the sealing strip installation area, ensuring the flatness of the contact surface between the base plate and the sealing strip, eliminating the risk of assembly interference, and maintaining the overall compactness of the guide rail structure.

[0043] The mounting base is positioned below the flange, with its top surface higher than the top surface of the fourth section and its bottom surface lower than the bottom surface of the fourth section. The top and bottom surfaces of the mounting base protrude from the upper and lower surfaces of the base plate, ensuring that the decorative panel and the automotive sheet metal can simultaneously adhere to the mounting base, forming a clear three-layer structural positioning relationship. This provides a precise benchmark for controlling the interlayer gap between the decorative panel, guide rail, and sheet metal.

[0044] The interface between the fourth segment and the third segment is referred to as the connecting surface. Multiple first undercuts are arranged on the connecting surface at intervals. A first groove is formed below each first undercut, extending through one edge of the fourth segment. The through groove at the root of the undercut enhances the elastic deformation capability during engagement, reducing the pushing force during sealing strip assembly, preventing damage to the sealing strip lip, and providing reliable elastic retention after assembly.

[0045] Multiple second buckles are arranged on the side plate at intervals. A second slot is formed below each second buckle, extending through the other edge of the fourth section. The side plate buckles and the bottom plate buckles form a multi-point fixing structure with spatially interlaced fasteners, which constrains the sealing strip from the side and improves the sealing strip's resistance to pull-out. The slots below also give the buckles elasticity, taking into account both ease of assembly and connection reliability.

[0046] The first and second undercuts are staggered. The first and second undercuts act on the sealing strip. This staggered arrangement of the undercuts distributes the stress points along the length of the sealing strip, avoiding stress concentration on the same cross-section, preventing excessive local compression or damage to the sealing strip, achieving a more uniform fixing effect, and extending the service life of the sealing strip.

[0047] There is a gap between the flange and the decorative panel. The reserved assembly gap can absorb manufacturing tolerances and cumulative assembly errors, and avoid rigid interference; at the same time, it provides displacement compensation space for thermal expansion and contraction caused by alternating hot and cold temperatures during vehicle operation, reduces thermal stress and the resulting friction noise, and improves NVH performance.

[0048] The rest of the contents of Example 2 are the same as those of Example 1.

[0049] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A mounting rail for a vehicle door system, characterized in that, The system includes a guide rail body, which has an overall L-shaped structure. The guide rail body includes an integrally formed base plate and side plates. The base plate is a plate structure that is bent vertically. The base plate has multiple downwardly recessed mounting grooves, and fasteners are provided at the mounting grooves. The base plate is fixed to the automotive sheet metal by the fasteners. The top surface of the side plate is folded outward to form a flange. Multiple mounting seats are provided on the side plate. The mounting seats are arranged along the direction of the base plate. The bottom surface of the mounting seats is in contact with the automotive sheet metal, and the top surface of the mounting seats is in contact with the decorative panel. The mounting seats are equipped with fasteners, which connect the decorative panel, the side plate, and the automotive sheet metal.

2. The mounting rail for a vehicle door system according to claim 1, characterized in that, The base plate comprises a first section, a second section, a third section, and a fourth section connected in sequence. The top surface of the base plate is in contact with the sealing strip, and the inner surface of the side plate is in contact with the sealing strip.

3. The mounting rail for a vehicle door system according to claim 2, characterized in that, The cross-section of the first segment and the cross-section of the third segment are located on the same horizontal plane, and the second segment is recessed and located below the plane where the first segment and the second segment are located.

4. The mounting rail for a vehicle door system according to claim 3, characterized in that, The top surfaces of the second and third sections are regularly arranged with multiple reinforcing plates. The reinforcing plates are arranged along the width direction of the base plate and are perpendicular to the top surface of the base plate. The multiple reinforcing plates are arranged parallel to each other.

5. The mounting rail for a vehicle door system according to claim 3, characterized in that, The fourth segment is connected to the outside of the third segment and is connected to the side plate. The fourth segment is set lower than the surface where the second segment is located, and the mounting groove is recessed at the fourth segment.

6. The mounting rail for a vehicle door system according to claim 5, characterized in that, The mounting base is positioned below the flange, with its top surface higher than the top surface of the fourth segment and its bottom surface lower than the bottom surface of the fourth segment.

7. The mounting rail for a vehicle door system according to claim 2, characterized in that, The connection surface between the fourth segment and the third segment is referred to as the connecting surface. Multiple first buckles are arranged on the connecting surface, with the multiple first buckles spaced apart. A first slot is opened below the first buckle, and the first slot penetrates one edge of the fourth segment.

8. The mounting rail for a vehicle door system according to claim 7, characterized in that, The side plate is provided with multiple second buckles, which are spaced apart. A second slot is provided below the second buckle, and the second slot extends through the other edge of the fourth section.

9. The mounting rail for a vehicle door system according to claim 8, characterized in that, The first and second inverted buckles are staggered.

10. The mounting rail for a vehicle door system according to claim 1, characterized in that, There is a gap between the flange and the decorative panel.

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