Door and vehicle

Abstract

The application relates to the technical field of vehicle doors, in particular to a vehicle door and a vehicle. The vehicle door comprises an inner plate, an outer plate, a lower trim plate and a sealing strip. One edge of the outer plate is connected with one edge of the inner plate to form a connecting part. The lower trim plate is used for covering the lower edge area of the vehicle door. The lower trim plate comprises an outer trim plate and an inner trim plate. The lower part of the outer trim plate extends in the direction of the outer plate and is provided with a first positioning protrusion. The lower part of the inner trim plate extends in the direction of the inner plate and is provided with a second positioning protrusion. The inner trim plate and the outer trim plate are foldably connected. After being folded, the first positioning protrusion and the second positioning protrusion jointly clamp the connecting part. The sealing strip is arranged on the side of the inner trim plate away from the inner plate. The sealing strip is connected with the first bending part of the inner trim plate. The top of the sealing strip is flush with the upper edge of the connecting part. The connecting part provides a positioning reference for the lower trim plate and the sealing strip, avoids the mispositioning problem of the positioning reference of the inner trim plate and the outer trim plate in the traditional structure, and improves the size consistency of the overall structure of the vehicle door.

Description

Technical Field

[0001] This application relates to the field of vehicle door technology, and more particularly to a vehicle door and a vehicle. Background Technology

[0002] In today's rapidly developing automotive industry, the continuous growth of the car market has made the need for cost reduction increasingly urgent for major automakers. As an important component of the vehicle, the lower door trim panel has become a key target for cost reduction and optimization. With consumers' ever-increasing demands for vehicle appearance, performance, and functionality, the lower door trim panel has gradually evolved from its initial function of simply decorating the outside to simultaneously decorating both the inside and outside, and has even developed into a foldable structure. Its design must consider multiple factors, including the overall vehicle styling, aerodynamic performance, safety, and manufacturing costs. Matching the body styling enhances the vehicle's sense of style and sportiness, optimizing the structure reduces air resistance and improves vehicle stability, while also ensuring protective performance, installation stability, and improved production efficiency to meet the market's high demands for overall automotive quality.

[0003] In existing technologies, industry research primarily focuses on the structural design, material selection, manufacturing processes, and installation methods of lower door trim panels to achieve a balance between functionality, performance, and cost. Some designs enhance the vehicle's visual impact through unique aesthetic effects, helping to lower the center of gravity and improve handling performance. Existing trim panels are also being explored to adapt their structural forms to the assembly requirements of different types of doors, supporting diverse vehicle configurations.

[0004] However, the current design of the lower door trim panel still has shortcomings. The installation and positioning of the interior and exterior trim panels lack a unified benchmark, or the performance of the positioning structure is poor, which directly affects the fitting accuracy between the trim panel and the door sheet metal. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a door and a vehicle.

[0007] To achieve the above objectives, in a first aspect, this application provides a vehicle door, comprising: Inner panel; An outer panel, one edge of which is connected to one edge of the inner panel to form a connecting portion; Lower trim panel, the lower trim panel being used to cover the lower edge region of the inner panel and the outer panel; the lower trim panel comprising: An exterior trim panel, wherein a first positioning protrusion is provided on the lower part of the exterior trim panel extending toward the outer panel; The interior panel has a second positioning protrusion extending from its lower part toward the inner panel. The interior trim panel and the exterior trim panel are foldable, and the first positioning protrusion and the second positioning protrusion together hold the connecting part.

[0008] A sealing strip is provided on the side of the interior panel away from the inner panel. The sealing strip is connected to the first bend of the interior panel, and the height of the sealing strip is flush with the upper edge of the connecting part.

[0009] In this technical solution, the connecting part formed by the edge connection of the inner panel and the outer panel serves as the reference for positioning the lower trim panel. After the interior trim panel and the outer trim panel are folded, the first positioning protrusion and the second positioning protrusion jointly clamp the connecting part, so that the outer trim panel and the interior trim panel of the lower trim panel share the same connecting part as the positioning reference. This avoids the problem of misalignment of the positioning references of the inner and outer trim panels in the traditional structure, ensures the fitting accuracy of the lower trim panel and the door body in the vertical direction of the vehicle, reduces assembly gap deviation, and improves the dimensional consistency of the overall door structure.

[0010] The interior and exterior trim panels feature a foldable connection design. During assembly, both panels can be unfolded first, making it easier for operators to align the connecting parts. Then, by folding them, the two positioning protrusions clamp the connecting parts. This eliminates the need for additional adjustments to the relative positions of the interior and exterior trim panels, simplifying the assembly process, reducing operational difficulty, improving the assembly efficiency of the lower door trim panels, and adapting to mass production needs.

[0011] After folding, the first positioning protrusion and the second positioning protrusion form a two-way clamping structure on the connecting part. The clamping force can offset the impact of the door vibration on the lower trim panel during driving, prevent the lower trim panel from becoming loose or shifting, ensure that the lower trim panel and the door body maintain a stable connection, and reduce the probability of later maintenance.

[0012] The lower trim panel folds over and covers the lower edge of the door. With the support of the positioning protrusion and the connecting part, the lower trim panel and the lower part of the door form a continuous covering structure. This can prevent road dust, mud, rainwater and other impurities from entering the inner side of the lower part of the door, avoid impurities from corroding the sheet metal structure and internal electrical components of the lower part of the door, extend the service life of the core components of the door, and reduce sealing failure and component failure caused by the accumulation of impurities.

[0013] Because the second positioning protrusion needs to be positioned in conjunction with the connecting part, the height of the sealing strip is flush with the upper edge of the connecting part. The unified design improves the tightness of the sealing strip and the side of the vehicle body, reduces the deviation of the sealing gap, and solves the problem of sealing failure caused by unreasonable position of traditional sealing strips.

[0014] Compared to the flat area, the first bend of the interior trim panel has higher rigidity. The bend serves as the mounting base for the sealing strip, preventing the sealing strip from loosening or shifting due to an overly soft mounting surface, and reducing calibration steps during assembly.

[0015] The sealing strip is located on the side of the interior panel away from the inner panel and is connected to the first bend to form a continuous lower sealing structure. This can prevent dust, mud, rainwater and other impurities from the road surface from entering the lower inner side of the door during driving, thus avoiding the corrosion of the door sheet metal and internal electrical components by impurities and extending the service life of the core components of the door.

[0016] In some embodiments of this application, the edge of the outer panel is bent into a flange, and the flange and the outer panel clamp the edge of the inner panel to form the connecting portion.

[0017] In this technical solution, the connecting part adopts a design of superimposed double-layer outer panel structure and single-layer inner panel structure. Compared with a single-layer sheet metal structure, the superposition of double-layer outer panels can improve the overall rigidity and deformation resistance of the connecting part. It can resist the compressive force generated when the lower trim panel positioning protrusion is clamped, avoiding deformation of the connecting part that could lead to positioning failure. During driving, it can offset the impact of external forces such as road vibration and sealing strip compression on the connecting part, preventing warping and deformation of the connecting part, and ensuring the long-term reliability of the lower trim panel clamping stability and the sealing performance of the lower door.

[0018] The structure of the outer panel edge flanging to clamp the inner panel edge can be achieved through mature processes such as sheet metal stamping and flanging, without the need for additional complex parts or special processes, thus reducing the processing difficulty and manufacturing cost of the connection part; the regular mating surface formed by this structure allows the lower trim panel positioning protrusion to be quickly aligned and clamped, reducing calibration steps in the assembly process, improving the assembly efficiency of the lower trim panel, adapting to the needs of mass production of automobiles, and achieving the goal of cost reduction and efficiency improvement while ensuring performance.

[0019] In some embodiments of this application, the top difference between the first positioning protrusion and the second positioning protrusion is set within 5 mm to adapt to the natural height difference of the connecting part. This allows for minor situations where the first protrusion is slightly lower or the second protrusion is slightly higher due to manufacturing deviations. This ensures that regardless of the direction of the deviation, the two positioning protrusions can form effective contact with the corresponding surfaces of the connecting part, avoiding clamping loosening and positioning offset caused by excessive height difference. This ensures a stable connection between the lower trim panel and the main body of the door from a dimensional perspective.

[0020] In this technical solution, if the difference in the top of the first and second positioning protrusions exceeds 5 mm, it will cause one side of the positioning protrusion to excessively compress the connecting part, resulting in local stress concentration. Long-term stress may lead to deformation and breakage of the positioning protrusion, or fatigue damage to the sheet metal of the connecting part. However, keeping the difference within 5 mm allows for a more even distribution of the clamping force of the two positioning protrusions on the connecting part, avoiding unilateral overload, significantly reducing the risk of structural damage, ensuring the long-term reliability of the lower trim panel positioning function, and meeting the high durability requirements of vehicle doors.

[0021] In some embodiments of this application, the upper part of the outer panel is provided with a first arc-shaped surface, the opening of the first arc-shaped surface faces away from the inner panel, and the first arc-shaped surface is connected to the upper structure of the outer trim panel.

[0022] In this technical solution, the opening of the first arc-shaped surface faces away from the inner panel, which can reserve a suitable mounting surface for the upper structure of the outer trim panel in a limited space. The arc-shaped surface is directly connected to the upper structure of the outer trim panel, and can guide the upper part of the outer trim panel to fit with the outer panel through the arc-shaped transition surface, ensuring a stable fit between the two and preventing gap problems caused by structural misalignment.

[0023] The first arc-shaped surface connects with the upper structure of the outer trim panel, which can form an arc-shaped transition profile between the outer panel and the upper part of the outer trim panel. This transition structure can be more coordinated with the overall shape of the vehicle body, avoid visual discontinuity at the junction of the outer panel and the outer trim panel, and further enhance the fashion sense and integrity of the vehicle's appearance.

[0024] The arc-shaped structure of the first arc surface has the ability to resist bending and vibration. During driving, the upper part of the outer panel is easily subjected to external forces such as airflow impact and road vibration. The arc surface can disperse external forces through its own structural characteristics, reducing the risk of deformation of the upper part of the outer panel. The connection between the arc surface and the upper structure of the outer trim panel improves the overall rigidity of the upper area of ​​the door, avoids the outer trim panel from loosening or shifting due to deformation of the outer panel, and ensures the long-term stable covering function of the lower trim panel.

[0025] In some embodiments of this application, the outer plate is provided with a second arc-shaped surface near the connecting part, the opening of the second arc-shaped surface faces away from the inner plate, and the outer plate section between the second arc-shaped surface and the first arc-shaped surface is a flat plate structure.

[0026] In this technical solution, the second arc-shaped surface serves as a transition structure near the connection part of the outer panel. Its arc-shaped design can disperse the material stress during the sheet metal stamping process. The arc-shaped surface can prevent defects such as cracking, wrinkling, and springback caused by stress concentration in the area near the connection part of the outer panel, ensuring the forming accuracy and surface quality of the outer panel near the connection part. The arc-shaped surface and the flat panel structure are smoothly connected, reducing the complexity of the overall stamping process of the outer panel.

[0027] The outer panel has a flat panel structure between the first and second arc surfaces. The flat panel is the main section of the outer panel and can reserve sufficient space for the outer side area of ​​the outer panel. This space can stably accommodate the radar and other electrical components required for the electric vehicle door.

[0028] In some embodiments of this application, the inner plate is configured as a stepped shape, including: Multiple stepped surfaces, at least one of which is vertical; A transition surface, which is used to connect adjacent stepped surfaces; Among them, multiple stepped surfaces are arranged sequentially from the connecting part towards the direction away from the outer panel, so that the inner panel moves closer to the vehicle interior.

[0029] In this technical solution, the stepped structure of the inner panel is arranged with multiple stepped surfaces sequentially from the connecting part towards the direction away from the outer panel, so that the inner panel as a whole moves towards the side of the vehicle interior. This layout can reduce the space occupied by the inner panel on the side of the outer panel, leaving more space for the outer panel and the outer area of ​​the exterior trim panel. This space can stably accommodate the radar and other electrical components required by the door, and the regular shape of the stepped surfaces can provide a flat and adaptable base for the mounting brackets of electrical components, ensuring that the radar and other components are installed firmly and in accurate positions, meeting the functional configuration requirements of high-level doors.

[0030] The inner panel is a load-bearing component of the door, and its rigidity affects the overall stability of the door. The stepped structure, through the combination of multiple steps and transition surfaces, can disperse stress through the bending shape of the stepped surfaces, improving the inner panel's resistance to bending and vibration. During driving, it can offset the external forces exerted on the lower part of the door by road vibration and airflow impact, avoiding local deformation of the inner panel, ensuring the stable fit between the outer panel, connecting parts, and lower trim panel, and reducing sealing failures or trim panel misalignment problems caused by inner panel deformation.

[0031] In some embodiments of this application, the first bend is provided with a decorative panel rounded corner, and the sealing strip is provided with a sealing strip rounded corner. The decorative panel rounded corner and the sealing strip rounded corner are tangent, and the radius of the decorative panel rounded corner is less than or equal to the radius of the sealing strip rounded corner.

[0032] In this technical solution, the rounded corners of the trim panel and the sealing strip are tangent, and the radius of the trim panel's rounded corner is less than or equal to the radius of the sealing strip's rounded corner. This design avoids structural interference during assembly. If the radius of the trim panel's rounded corner is too large, it is easy to cause excessive interference with the sealing strip, making it difficult for the sealing strip to fit smoothly. The smaller and tangent radius of the trim panel's rounded corner allows the trim panel's rounded corner to be naturally embedded into the arc surface of the sealing strip's rounded corner through local compression, reducing assembly resistance and making the connection between the sealing strip and the first bend smoother, thus meeting the high-efficiency assembly requirements of mass production scenarios.

[0033] In this design, the rounded corner tangent fit structure allows the trim panel and the sealing strip to form a continuous and uniform contact interface. Compared with the discontinuous contact between the traditional flat and curved surfaces, the tangent rounded corner fit allows the contact pressure to be evenly distributed along the arc surface, avoiding excessive local pressure that could cause deformation of the sealing strip, or insufficient local pressure that could cause sealing gaps. The radius of the trim panel's rounded corner is no greater than the radius of the sealing strip's rounded corner, ensuring that the sealing strip always maintains a wrapping fit with the trim panel's rounded corner, enhancing contact sealing and preventing dust, mud, and other impurities from entering the lower part of the door.

[0034] In some embodiments of this application, the horizontal distance from the point where the rounded corner of the trim panel and the rounded corner of the sealing strip are tangent to the side of the interior trim panel is L, and the radius of the rounded corner of the sealing strip is R, where L is less than half of R.

[0035] In this technical solution, the horizontal distance L from the point of tangency between the corner of the trim panel and the corner of the sealing strip to the side of the interior trim panel is less than half the radius R of the corner of the sealing strip. This parameter design controls the effective sealing compression of the sealing strip. When the sealing strip mates with the first bend of the trim panel, this parameter ensures that the corner of the sealing strip retains sufficient deformation allowance while conforming to the corner of the trim panel. This avoids insufficient compression of the sealing strip due to excessive L, resulting in a sealing gap, and also prevents excessive compression and deformation of the sealing strip due to excessive L, which would damage the integrity of the sealing structure. This parameter allows the contact pressure between the sealing strip and the trim panel to be evenly distributed along the tangent arc surface, forming a continuous and tight sealing interface. This prevents dust and sand from entering the lower part of the door, solving the sealing failure problem caused by uncontrolled compression in traditional sealing structures.

[0036] If L≥R / 2, the point of compression between the rounded corner of the trim panel and the rounded corner of the sealing strip will be close to the middle of the sealing strip, which is prone to generating a large reverse thrust. This means that additional resistance needs to be overcome during assembly to fit the sealing strip and the trim panel together. However, if L<R / 2, the point of tangency will be closer to the side of the interior trim panel, and the compression force will be concentrated in the area near the edge of the sealing strip. The reverse thrust will be reduced, and the operator can achieve a smooth fit between the sealing strip and the trim panel without having to apply pressure. This greatly reduces the assembly difficulty and is suitable for assembly needs in mass production scenarios.

[0037] The parameter design of L < R / 2 can enhance the locking effect between the sealing strip and the trim panel by optimizing the position of the tangent point. Under this parameter, the rounded corner of the sealing strip can form a semi-enclosed support for the rounded corner of the trim panel due to the reasonable fit position, avoiding the displacement of the tangent point between the two caused by driving vibration or external impact. A reasonable L value can reduce the relative frictional displacement between the sealing strip and the trim panel, reduce the risk of aging and falling off of the sealing strip due to uneven force after long-term use, and ensure that the sealing structure maintains a stable fit relationship in the long term.

[0038] In some embodiments of this application, the sealing strip is provided with a sealing protrusion, which is connected to the interior panel.

[0039] In this technical solution, the connection between the sealing protrusion and the interior panel can increase the contact pressure between the two to fill the tiny assembly gap, further preventing dust, mud, rainwater and other impurities from entering the inside of the door, thus improving the sealing reliability.

[0040] The second aspect provides a vehicle, including: a body and a door as described in the first aspect, the door being disposed on the body.

[0041] In this technical solution, when the vehicle door is assembled to the body, the sealing structure at the bottom of the door can form a continuous and tight sealing interface with the side panel of the body. This prevents impurities such as road dust, mud, and rainwater from entering the vehicle body through the gap between the door and the body during driving, thus avoiding corrosion of the side panel sheet metal, chassis components, and in-vehicle electrical system. The reliability of the sealing structure reduces the entry of external moisture into the vehicle, lowering the risk of mold growth in the interior and corrosion of metal parts, and extending the overall service life of the vehicle.

[0042] When the door is assembled with the body, the gap between the door and the side panel of the body can be controlled within a smaller and more uniform range, avoiding the appearance problems such as misalignment and uneven gap between the door and the body caused by door positioning deviation in traditional vehicles; the folding and wrapping structure of the lower door trim panel is naturally connected with the overall shape of the body, eliminating the visual discontinuity between the lower part of the door and the side panel of the body, and enhancing the overall sense of unity and fashion of the side of the vehicle.

[0043] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the door according to this application; Figure 2 This is an enlarged view of the structure of part A of the door according to this application; Figure 3 This is a schematic diagram of the connecting part structure of the car door according to this application; Figure 4 This is a schematic diagram of the lower trim panel structure of the vehicle door according to this application; Figure 5 This is a schematic diagram of the door sealing strip installation structure according to this application.

[0045] In the above figures: 1. Inner panel; 11. Stepped surface; 12. Transitional surface; 2. Outer panel; 21. First curved surface; 22. Second curved surface; 23. Flat panel structure; 3. Connecting part; 31. Flanged edge; 32. Edge of inner panel; 4. Lower trim panel; 41. Exterior trim panel; 411. First positioning protrusion; 42. Interior trim panel; 421. Second positioning protrusion; 422. First bend; 4221. Rounded corner of trim panel; 5. Sealing strip; 51. Rounded corners of the sealing strip; 52. Sealing protrusion; 6. Car door. Detailed Implementation

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments. It's worth noting that in today's rapidly developing automotive industry, the continuous growth of the car market has made cost reduction an increasingly urgent need for major automakers. As a crucial component of the vehicle, the lower door trim panel has become a key target for cost optimization. Simultaneously, with consumers' ever-increasing demands for vehicle appearance, performance, and functionality, the lower door trim panel has evolved from its initial function of simply decorating the exterior to simultaneously decorating both the interior and exterior, and has even developed into a foldable structure. Its design must consider multiple factors, including the overall vehicle styling, aerodynamic performance, safety, and manufacturing costs. Matching the body design enhances the vehicle's sense of style and sportiness, optimizing the structure reduces air resistance and improves vehicle stability, while also ensuring protective performance, installation stability, and increased production efficiency to meet the market's high demands for overall automotive quality.

[0048] In existing technologies, industry research primarily focuses on the structural design, material selection, manufacturing processes, and installation methods of lower door trim panels to achieve a balance between function, performance, and cost. Some designs enhance the vehicle's visual impact, lower the center of gravity, and improve handling performance through unique aesthetic effects; optimizing the trim panel's shape also improves the vehicle's aerodynamics. Existing trim panels are also exploring structural adjustments to adapt to the assembly requirements of different door types, supporting diverse vehicle configurations.

[0049] However, the current design of the lower door trim panels still has shortcomings: First, some trim panels have problems with their size being too small or their cross-sectional design being unreasonable, making it difficult to arrange the installation structure of the trim panels themselves and also squeezing the installation space of other internal electrical components; Second, the installation and positioning of the interior and exterior trim panels lack a unified benchmark, or the performance of the positioning structure is poor, which directly affects the fitting accuracy between the trim panels and the door sheet metal; Third, the position planning of the lower sealing strip on the door is unreasonable, which cannot fully play its sealing role and affects the sealing performance of the vehicle; Fourth, the sealing fit structure design between the sealing strip and the trim panel body has defects, which not only brings difficulties to the assembly operation, but also easily leads to poor sealing effect, making it difficult to meet the vehicle's requirements for sealing reliability.

[0050] Based on this, this application proposes a car door and a vehicle including the car door. The design features a stepped structure on the inner panel to allow space for the outer panel, an arc-shaped surface at the top of the outer panel and near the connecting part, and a flat panel in the middle to accommodate the installation requirements of the outer trim panel. The lower trim panel consists of a foldable connecting outer trim panel and an interior trim panel, with positioning protrusions at their lower parts to clamp the connecting part formed by the outer panel's folded edge. The first bend of the interior trim panel is connected to a sealing strip, and the height of the sealing strip matches the height of the second positioning protrusion. The rounded corners of the trim panel and the rounded corners of the sealing strip are tangent, and the horizontal distance between the tangent points is less than half the radius of the sealing strip's rounded corner. This design improves the utilization of car door space to accommodate the installation of electronic components such as radar, enhances assembly accuracy and sealing reliability, optimizes appearance consistency, and reduces production and maintenance costs. It solves the problems of insufficient space in traditional car doors, making it difficult to arrange advanced configurations, poor fit due to positioning deviations of the inner and outer trim panels, sealing failure caused by unreasonable sealing strip structure design, complex and inefficient assembly processes, and high manufacturing costs.

[0051] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0052] As attached Figures 1 to 5 As shown, a first aspect of this application provides a vehicle door 6, including an inner panel 1, an outer panel 2, and a lower trim panel 4. The inner panel 1 is a metal structural component inside the vehicle door 6, serving as the frame of the vehicle door 6. The outer panel 2 is the outermost metal panel of the vehicle door 6, forming part of the vehicle body styling. The lower trim panel 4 is used to protect the lower parts of the inner panel 1 and the outer panel 2, and to address the aesthetic issues of the lower part of the vehicle door 6. The lower trim panel 4 is a foldable structure that covers the lower part of the outer panel 2 and the inner panel 1 of the vehicle door 6.

[0053] In some embodiments, one edge of the outer panel 2 is connected to one edge of the inner panel 1 to form a connecting portion 3. The connecting portion 3 fixes the lower parts of the inner panel 1 and the outer panel 2 together, and the connecting portion 3 serves as a reference for positioning the lower trim panel 4.

[0054] In some embodiments, the lower trim panel 4 includes an outer trim panel 41 and an inner trim panel 42. The lower part of the outer trim panel 41 extends toward the outer panel 2 and is provided with a first positioning protrusion 411. The lower part of the inner trim panel 42 extends toward the inner panel 1 and is provided with a second positioning protrusion 421. After the inner trim panel 42 and the outer trim panel 41 are folded, the first positioning protrusion 411 and the second positioning protrusion 421 jointly clamp the connecting part 3, so that the outer trim panel 41 and the inner trim panel 42 of the lower trim panel 4 share the same connecting part 3 as a positioning reference. This avoids the problem of misalignment of the positioning references of the inner and outer trim panels 41 in the traditional structure, ensures the fitting accuracy of the lower trim panel 4 and the main body of the door 6 in the vertical direction of the vehicle, reduces assembly gap deviation, and improves the dimensional consistency of the overall structure of the door 6.

[0055] In some embodiments, the door 6 structure further includes a sealing strip 5, which is located on the side of the interior panel 42 away from the inner panel 1. The sealing strip 5 is connected to the first bend 422 of the interior panel 42, and the height 52 of the sealing strip is flush with the upper edge of the connecting part 3. Because the second positioning protrusion 421 needs to cooperate with the connecting part 3 for positioning, the height of the sealing strip is flush with the upper edge of the connecting part 3. The uniform design improves the tightness of the fit between the sealing strip 5 and the side of the vehicle body, reduces the deviation of the sealing gap, and solves the problem of sealing failure caused by the unreasonable position of the traditional sealing strip 5.

[0056] In some embodiments, the interior trim panel 42 and the exterior trim panel 41 adopt a foldable connection design. During the assembly process, the two can be unfolded first to facilitate the operator to align the connecting part 3. Then, by folding, the two positioning protrusions clamp the connecting part 3. There is no need to adjust the relative position of the interior and exterior trim panels 41, which simplifies the assembly process, reduces the difficulty of operation, improves the assembly efficiency of the lower trim panel 4 of the door 6, and adapts to the needs of mass production.

[0057] In some embodiments, after folding, the first positioning protrusion 411 and the second positioning protrusion 421 form a bidirectional clamping structure for the connecting part 3. The clamping force can offset the impact of the vibration of the door 6 on the lower trim panel 4 during driving, prevent the lower trim panel 4 from becoming loose or shifted, ensure that the lower trim panel 4 and the main body of the door 6 maintain a stable connection, and reduce the probability of later maintenance.

[0058] In some embodiments, the lower trim panel 4 folds over and covers the lower edge area of ​​the door 6, and relies on the clamping of the positioning protrusion and the connecting part 3 to form a continuous covering structure between the lower trim panel 4 and the lower part of the door 6. This can prevent road dust, mud, rainwater and other impurities from entering the lower inner side of the door 6, avoid impurities from corroding the sheet metal structure and internal electrical components of the lower part of the door 6, extend the service life of the core components of the door 6, and reduce sealing failure and component failure caused by the accumulation of impurities.

[0059] In some embodiments, the connecting portion 3 has an edge 31 bent from the edge of the outer panel, and the edge 31 and the outer panel 2 clamp the edge 32 of the inner panel to form the connecting portion 3. The connecting portion 3 adopts a design of superimposing a double-layer structure of the outer panel 2 and a single-layer structure of the inner panel 1. Compared with a single-layer sheet metal structure, the superposition of the double-layer outer panel 2 can improve the overall rigidity and deformation resistance of the connecting portion 3. It can resist the squeezing force generated when the positioning protrusion of the lower trim panel 4 is clamped, and avoid the deformation of the connecting portion 3 leading to positioning failure. During driving, it can offset the impact of external forces such as road vibration and the squeezing of the sealing strip 5 on the connecting portion 3, prevent the connecting portion 3 from warping or deforming, and ensure the long-term reliable clamping stability of the lower trim panel 4 and the sealing performance of the lower part of the door 6.

[0060] It should be noted that the structure of the outer panel 2 edge flanging and clamping the inner panel 1 edge can be achieved through mature processes such as sheet metal stamping and flanging, without the need for additional complex parts or special processes, thus reducing the processing difficulty and manufacturing cost of the connecting part 3; the regular mating surface formed by this structure allows the positioning protrusion of the lower trim panel 4 to be quickly aligned and clamped, reducing calibration steps in the assembly process, improving the assembly efficiency of the lower trim panel 4, adapting to the needs of mass production of automobiles, and achieving the goal of cost reduction and efficiency improvement while ensuring performance.

[0061] In some embodiments, the difference in the top of the first positioning protrusion 411 and the second positioning protrusion 421 in the vertical direction is controlled within 5 mm to adapt to the natural height difference of the connecting part 3. This allows for minor situations where the first protrusion is slightly lower or the second protrusion is slightly higher due to manufacturing deviations. This ensures that regardless of the direction of deviation, the two positioning protrusions can form effective contact with the corresponding surface of the connecting part 3, avoiding clamping loosening and positioning offset caused by excessive height difference. This ensures a stable connection between the lower trim panel 4 and the main body of the door 6 from a dimensional perspective.

[0062] In the above scheme, if the top difference between the first and second positioning protrusions 421 exceeds 5 mm, it will cause one side of the positioning protrusion to excessively compress the connecting part 3, resulting in local stress concentration. Long-term stress may lead to deformation and breakage of the positioning protrusion, or fatigue damage to the sheet metal of the connecting part 3. However, if the top difference is controlled within 5 mm, the clamping force of the two positioning protrusions on the connecting part 3 can be more evenly distributed, avoiding unilateral overload, significantly reducing the risk of structural damage, ensuring the long-term reliability of the positioning function of the lower trim panel 4, and meeting the high durability requirements of the door 6.

[0063] In some embodiments, the upper part of the outer panel 2 is provided with a first arc-shaped surface 21, the opening of the first arc-shaped surface 21 facing away from the inner panel 1, and the first arc-shaped surface 21 is connected to the upper structure of the outer trim panel 41. Specifically, the first arc-shaped surface 21 can be set as multiple continuous rounded corners. The opening of the first arc-shaped surface 21 facing away from the inner panel 1 can reserve a suitable mounting surface for the upper structure of the outer trim panel 41 in a limited space. The arc-shaped surface is directly connected to the upper structure of the outer trim panel 41, and can guide the upper part of the outer trim panel 41 to fit with the outer panel 2 through the arc-shaped transition surface, ensuring a stable fit between the two and preventing gap problems caused by structural misalignment.

[0064] Through the above scheme, the arc structure of the first arc surface 21 has the ability to resist bending and vibration. During driving, the upper part of the outer panel 2 is easily subjected to external forces such as airflow impact and road vibration. The arc surface can disperse external forces through its own structural characteristics, reducing the risk of deformation of the upper part of the outer panel 2. The connection between the arc surface and the upper structure of the outer trim panel 41 improves the overall rigidity of the upper area of ​​the door 6, avoids the outer trim panel 41 from loosening or shifting due to the deformation of the outer panel 2, and ensures the long-term stable covering function of the lower trim panel 4.

[0065] In some embodiments, the first arc-shaped surface 21 is connected to the upper structure of the outer trim panel 41, which can form an arc-shaped transition profile between the outer panel 2 and the upper part of the outer trim panel 41. This transition structure can be more coordinated with the overall shape of the vehicle body, avoid visual discontinuity at the junction of the outer panel 2 and the outer trim panel 41, and further enhance the fashion sense and integrity of the vehicle's appearance.

[0066] In some embodiments, the outer panel 2 is provided with a second arc-shaped surface 22 near the connecting portion 3. The opening of the second arc-shaped surface 22 faces away from the inner panel 1. The section of the outer panel 2 between the second arc-shaped surface 22 and the first arc-shaped surface 21 is a flat plate structure 23. The opening of the second arc-shaped surface 22 faces away from the inner panel 1, which can form an outwardly accommodating structural space in the area near the connecting portion 3. This space can provide a slack for the lower part of the outer trim panel 41, and at the same time reserve a stable installation and clamping space for the first positioning protrusion 411 at the lower part of the outer trim panel 41.

[0067] In some embodiments, the second arc-shaped surface 22 in this solution serves as a transition structure for the outer plate 2 near the connecting part 3. Its arc-shaped design can disperse the material stress during the sheet metal stamping process. The arc-shaped surface can prevent defects such as cracking, wrinkling, and springback from occurring in the area of ​​the outer plate 2 near the connecting part 3 due to stress concentration, thus ensuring the forming accuracy and surface quality of the outer plate 2 near the connecting part 3. The arc-shaped surface and the flat plate structure 23 are smoothly connected, reducing the complexity of the overall stamping process of the outer plate 2.

[0068] In some embodiments, the outer panel 2 is provided with a flat plate structure 23 between the first arcuate surface 21 and the second arcuate surface 22. The flat plate is the main body section of the outer panel 2 and can reserve sufficient space for the outer area of ​​the outer trim panel 41. This space can stably accommodate the radar and other electrical components required by the electric vehicle door 6.

[0069] In some embodiments, the inner panel 1 is configured as a stepped shape, including a plurality of stepped surfaces 11 and a transition surface 12. At least one stepped surface 11 has a vertical cross-section; the transition surface 12 is used to connect adjacent stepped surfaces 11; the plurality of stepped surfaces 11 are arranged sequentially from the connecting portion 3 in a direction away from the outer panel 2, so that the inner panel 1 moves closer to the vehicle interior.

[0070] In some embodiments, the stepped structure of the inner panel 1 is arranged with multiple stepped surfaces 11 sequentially from the connecting part 3 toward the direction away from the outer panel 2, so that the inner panel 1 as a whole moves toward the side of the vehicle interior. This layout can reduce the space occupied by the inner panel 1 on the side of the outer panel 2, and reserve more space for the outer panel 2 and the outer area of ​​the outer trim panel 41. This space can stably accommodate the radar and other electrical components required by the door 6, and the regular shape of the stepped surfaces 11 can provide a flat and adaptable base for the mounting brackets of electrical components, ensuring that the radar and other components are installed firmly and in accurate positions, meeting the functional configuration requirements of the high-level door 6.

[0071] With the above solution, the inner panel 1 is the load-bearing component of the door 6, and its rigidity affects the overall stability of the door 6. The stepped structure, through the combination of multiple steps and transition surfaces 12, can disperse stress through the bending shape of the stepped surfaces 11, improving the inner panel 1's resistance to bending and vibration. During driving, it can offset the external forces exerted on the lower part of the door 6 by road vibration and airflow impact, avoid local deformation of the inner panel 1, ensure the stability of the fit between the outer panel 2, the connecting part 3, and the lower trim panel 4, and reduce sealing failure or trim panel misalignment caused by deformation of the inner panel 1.

[0072] In some embodiments, the sealing strip 5 is disposed on the side of the interior panel 42 away from the inner panel 1 and is connected with the first bending portion 422 to form a continuous lower sealing structure, which can block dust, mud, rainwater and other impurities on the road surface from entering the lower inner side of the door 6 during driving, avoid impurities from corroding the sheet metal and internal electrical components of the door 6, and extend the service life of the core components of the door 6.

[0073] In some embodiments, the first bending portion 422 is provided with a decorative panel rounded corner 4221, and the sealing strip 5 is provided with a sealing strip rounded corner 51. The decorative panel rounded corner 4221 is tangent to the sealing strip rounded corner 51, and the radius of the decorative panel rounded corner 4221 is less than or equal to the radius of the sealing strip rounded corner 51. This solution avoids structural interference during assembly by designing that the decorative panel rounded corner 4221 is tangent to the sealing strip rounded corner 51 and the radius of the decorative panel rounded corner 4221 is not greater than the radius of the sealing strip rounded corner 51. If the radius of the decorative panel rounded corner 4221 is too large, it is easy to cause excessive interference with the sealing strip 5, making it difficult for the sealing strip 5 to fit smoothly. The smaller radius and tangent fit of the decorative panel rounded corner 4221 allows the decorative panel rounded corner 4221 to be naturally embedded into the arc surface of the sealing strip rounded corner 51 through local compression, reducing assembly resistance and making the connection between the sealing strip 5 and the first bending portion 422 smoother, which is suitable for the high-efficiency assembly requirements in mass production scenarios.

[0074] Through the above scheme, the rounded corner tangent fit structure in this scheme can make the trim panel and the sealing strip 5 form a continuous and uniform contact interface. Compared with the discontinuous contact between the traditional plane and the curved surface, the tangent rounded corner fit can make the contact pressure of the two evenly distributed along the arc surface, avoiding excessive local pressure that causes deformation of the sealing strip 5, or insufficient local pressure that causes sealing gaps. The radius of the trim panel rounded corner 4221 is not greater than the radius of the sealing strip rounded corner 51, which can ensure that the sealing strip 5 always maintains a wrapping fit with the trim panel rounded corner 4221, enhances the contact sealing performance, and prevents dust, mud and other impurities from entering the lower part of the door 6.

[0075] In some embodiments, the horizontal distance from the point where the corner of the trim panel 4221 is tangent to the corner of the sealing strip 51 to the side of the interior panel 42 is L, and the radius of the corner of the sealing strip 51 is R, where L is less than half of R. This parameter design, where the horizontal distance L from the point where the corner of the trim panel 4221 is tangent to the corner of the sealing strip 51 to the side of the interior panel 42 is less than half the radius R of the corner of the sealing strip 51, controls the effective sealing compression of the sealing strip 5. When the sealing strip 5 mates with the first bend 422 of the trim panel, this parameter ensures that the corner of the sealing strip 51, while conforming to the corner of the trim panel 4221, retains sufficient deformation allowance. This avoids insufficient compression of the sealing strip 5 due to excessive L, resulting in a sealing gap, and also prevents excessive compression and deformation of the sealing strip 5 due to excessive L, which could damage the integrity of the sealing structure. This parameter allows the contact pressure between the sealing strip 5 and the trim panel to be evenly distributed along the tangent arc surface, forming a continuous and tight sealing interface, preventing dust and sand from entering the lower part of the door 6, and solving the sealing failure problem caused by uncontrolled compression in traditional sealing structures.

[0076] In some embodiments, when L≥R / 2, the pressing point of the trim panel rounded corner 4221 against the sealing strip rounded corner 51 will be close to the middle of the sealing strip 5, which is prone to generating a large reverse thrust, resulting in additional resistance to be overcome during assembly in order to fit the sealing strip 5 with the trim panel.

[0077] In some embodiments, when L < R / 2, the tangent point can be closer to the side of the interior panel 42, and the compressive force is concentrated in the area near the edge of the sealing strip 5. The reverse thrust is reduced, and the operator can achieve a smooth fit between the sealing strip 5 and the trim panel without forcibly applying pressure, which greatly reduces the assembly difficulty and adapts to the assembly requirements of mass production scenarios. The parameter design of L < R / 2 can enhance the locking effect between the sealing strip 5 and the trim panel by optimizing the position of the tangent point. Under this parameter, the rounded corner 51 of the sealing strip can form a semi-enclosed support for the rounded corner 4221 of the trim panel due to the reasonable fit position, avoiding the displacement of the tangent point between the two caused by driving vibration or external impact. A reasonable L value can reduce the relative frictional displacement between the sealing strip 5 and the trim panel, reduce the risk of aging and falling off of the sealing strip 5 due to uneven force after long-term use, and ensure that the sealing structure maintains a stable fit relationship in the long term.

[0078] In some embodiments, the inner surface of the sealing strip 5 is integrally formed with continuous sealing protrusions 52, which form an elastic pressing connection with the interior trim panel 42. The elastic pressing fit between the sealing protrusions 52 and the interior trim panel 42 can increase the positive pressure on the contact surface. The elastic deformation of the material itself fills the tiny gaps caused by manufacturing tolerances or assembly errors, preventing impurities such as dust, mud, rainwater, and corrosive liquids from the external environment from entering the inner cavity of the door. This avoids impurities from corroding the metal components, wiring harnesses, and sound insulation materials inside the door, thereby improving the overall sealing performance and structural durability of the door.

[0079] A second aspect of this application provides a vehicle, including a body and a door 6 as described in the first aspect, the door 6 being disposed on the body. When the door 6 is fitted to the body, the sealing structure at the lower part of the door 6 can form a continuous and tight sealing interface with the side panel of the body, preventing impurities such as road dust, mud, and rainwater from entering the interior of the body through the gap between the door 6 and the body during driving, thus avoiding the corrosion of the body side panel sheet metal, chassis components, and in-vehicle electrical system by these impurities. The reliability of the sealing structure can reduce the entry of external moisture into the vehicle interior, lower the risk of mold growth in the interior and corrosion of metal parts, and extend the overall service life of the vehicle.

[0080] When the door 6 is assembled with the body, the gap between the door 6 and the side panel of the body can be controlled within a smaller and more uniform range, avoiding the appearance problems of misalignment and uneven gap between the door 6 and the body caused by the positioning deviation of the door 6 in traditional vehicles; the folding and covering structure of the lower trim panel 4 of the door 6 is naturally connected with the overall shape of the body, eliminating the visual discontinuity between the lower part of the door 6 and the side panel of the body, and enhancing the overall sense of unity and fashion of the side of the vehicle.

[0081] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A car door, characterized in that, include: Inner plate (1); Outer plate (2), one edge of the outer plate (2) is connected to one edge of the inner plate (1) to form a connecting part (3); A lower trim panel (4) for covering the lower edge regions of the inner panel (1) and the outer panel (2); the lower trim panel (4) comprises: The exterior trim panel (41) has a first positioning protrusion (411) extending from its lower part toward the exterior panel (2); Interior panel (42), the lower part of which extends toward the inner panel (1) is provided with a second positioning protrusion (421); The interior trim panel (42) and the exterior trim panel (41) are foldable, and the first positioning protrusion (411) and the second positioning protrusion (421) together hold the connecting part (3). A sealing strip (5) is provided on the side of the interior panel (42) away from the inner panel (1). The sealing strip (5) is connected to the first bend (422) of the interior panel (42). The top of the sealing strip (5) is flush with the upper edge of the connecting part (3).

2. The vehicle door according to claim 1, characterized in that, The outer plate (2) has a flange (31) bent at its edge, and the flange (31) and the outer plate (2) clamp the edge (32) of the inner plate to form the connecting part (3).

3. The vehicle door according to claim 1, characterized in that, The difference between the top of the first positioning protrusion (411) and the second positioning protrusion (421) is set within 5 mm.

4. The vehicle door according to claim 1, characterized in that, The upper part of the outer panel (2) is provided with a first arc-shaped surface (21), the opening of the first arc-shaped surface (21) is oriented away from the inner panel (1), and the first arc-shaped surface (21) is connected to the upper structure of the outer trim panel (41).

5. The vehicle door according to claim 4, characterized in that, The outer plate (2) has a second arc-shaped surface (22) near the connecting part (3). The opening of the second arc-shaped surface (22) faces away from the inner plate (1). The section of the outer plate (2) between the second arc-shaped surface (22) and the first arc-shaped surface (21) is a flat plate structure (23).

6. The vehicle door according to claim 1, characterized in that, The inner plate (1) is configured as a stepped shape, including: Multiple stepped surfaces (11), at least one of the stepped surfaces (11) is vertical; A transition surface (12) is used to connect adjacent stepped surfaces (11); Among them, multiple stepped surfaces (11) are arranged sequentially from the connecting part (3) in a direction away from the outer panel (2), so that the inner panel (1) moves closer to the vehicle interior.

7. The vehicle door according to claim 1, characterized in that, The first bend (422) is provided with a decorative panel rounded corner (4221), and the sealing strip (5) is provided with a sealing strip rounded corner (51). The decorative panel rounded corner (4221) is tangent to the sealing strip rounded corner (51), and the radius of the decorative panel rounded corner (4221) is less than or equal to the radius of the sealing strip rounded corner (51).

8. The vehicle door according to claim 7, characterized in that, The horizontal distance from the point where the rounded corner (4221) of the trim panel and the rounded corner (51) of the sealing strip to the side of the interior panel (42) is L, and the radius of the rounded corner (51) of the sealing strip is R, where L is less than half of R.

9. The vehicle door according to claim 1, characterized in that, The sealing strip (5) is provided with a sealing protrusion (52), which is connected to the interior panel (42).

10. A vehicle, characterized in that, include: The vehicle body and the door (6) as described in any one of claims 1 to 9, the door (6) being disposed on the vehicle body.

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