Gradient curvature matched through type tail lamp mounting structure and mounting method

Abstract

The invention discloses a gradual change curvature matched through type tail lamp mounting structure and mounting method.The mounting structure comprises a back door outer plate and a through type tail lamp, a tail lamp mounting area is arranged on the back door outer plate, and a tail lamp mounting point, a tail lamp positioning hole and a sealing face are arranged in the tail lamp mounting area; the multiple tail lamp installation points are arranged, and the installation faces where the multiple tail lamp installation points are located are located in the same direction. The multiple tail lamp positioning holes are located in the middle of the mounting area and the position with the minimum curvature radius respectively, the two tail lamp sealing faces are symmetrically distributed in the left-right direction relative to the middle of the mounting area, and the tail lamp sealing faces are used for sealing tail lamp beams. The outer plate and the tail lamp can be connected under the condition that no tail lamp mounting plate exists, the outer plate punch forming requirement and the tail lamp mounting requirement can be met, and the development cost and the whole vehicle weight are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of taillight mounting structures, and particularly relates to a through-type taillight mounting structure with gradient curvature matching and an mounting method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] A through-type taillight is a design that integrates taillight functions such as brake lights, width lights, and turn signals into a horizontal continuous light strip. The lamp body or light guide structure extends from one side of the rear of the vehicle to the other, forming an overall coherent lighting visual effect. It is usually closely coordinated with the tailgate or rear sheet metal structure, and must take into account styling aesthetics, functionality, and process feasibility. However, some tailgate designs have small lateral curvatures on both sides to achieve better visual perception and functional design. The tailgate outer panel adopts one-piece stamping technology. The through-type taillight is directly installed on the outer panel, and a mounting surface needs to be reserved. This makes it easy for the thinning rate and maximum failure rate of the small curvature on both sides to be lower than normal standards, resulting in stamping cracks in the outer panel.

[0004] Existing technology for tailgates with matching double-sided curvatures uses a taillight mounting plate to connect the taillights to the outer panel. Mounting points are provided within the outer panel to ensure the panel can be stamped. However, the addition of a taillight mounting plate increases the cost of the mold inspection clamp and the weight of the vehicle, which is disadvantageous for current cost-conscious vehicle development. Furthermore, the traditional mounting plate is bolted to the outer panel, which is prone to fretting wear due to vehicle vibration, leading to loose connections. Plastic, with its significantly different thermal expansion coefficient from the metal outer panel, can easily generate deformation stresses at extreme temperatures. Summary of the Invention

[0005] The purpose of the present invention is to provide a through-type taillight mounting structure and method with a gradient curvature matching, which can connect the outer panel and the taillight without a taillight mounting plate, and can meet the outer panel stamping requirements and taillight installation requirements, thereby reducing development costs and vehicle weight.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a through - type taillight mounting structure with gradually changing curvature matching, including an outer panel of the rear door and a through - type taillight. A taillight mounting area is provided on the outer panel of the rear door, and taillight mounting points, taillight positioning holes, and sealing surfaces are arranged in the taillight mounting area. There are multiple taillight mounting points, and the mounting surfaces where the multiple taillight mounting points are located are all in the same direction. There are multiple taillight positioning holes, which are respectively located at the middle position and the position with the smallest radius of curvature in the mounting area. There are two taillight sealing surfaces, which are symmetrically distributed left and right about the middle position of the mounting area, and the taillight sealing surfaces are used to seal the taillight beam.

[0008] As a further technical solution, the surface curvature within the taillight mounting area shows a gradually changing pattern, with the curvature gradually decreasing from the middle to both sides of the mounting area.

[0009] As a further technical solution, there are three positioning holes, one of which is arranged at the middle position of the taillight mounting area, and the other two are respectively arranged at the positions with the smallest radius of curvature on both sides of the taillight mounting area.

[0010] As a further technical solution, the taillight mounting points include symmetrically distributed taillight mounting points and taillight mounting points in the middle area, and all taillight mounting points are distributed in a two - way Z - Y pattern within the taillight mounting area.

[0011] As a further technical solution, there are six symmetrically distributed taillight mounting points and two taillight mounting points in the middle area, and the taillight mounting points in the middle area are located between the symmetrically distributed taillight mounting points on the left and right sides.

[0012] As a further technical solution, a strip - shaped upper rounded corner and a strip - shaped lower rounded corner are provided in the taillight mounting area, and the upper and lower rounded corners of the taillight mounting area serve as the connection area between the outer panel of the rear door and the through - type taillight.

[0013] As a further technical solution, a gradually changing curved surface is used to connect the mounting surface of the positioning hole and the large surface of the taillight mounting area.

[0014] As a further technical solution, the taillight sealing surface adopts a boss structure, which protrudes towards the through - type taillight. The taillight sealing surface of the boss structure is hermetically connected to the through - type taillight through a sealant or a gasket.

[0015] As a further technical solution, all the positioning holes are waist - shaped holes, and the positioning hole located at the position with the smallest radius of curvature rotates a certain angle in the Z - direction around the center of the waist - shaped hole.

[0016] In a second aspect, an embodiment of the present invention provides an installation method for a through - type taillight mounting structure with gradually changing curvature matching, including:

[0017] First, align and insert the middle positioning post of the through - type taillight into the middle taillight positioning hole on the outer panel of the rear door.

[0018] Next, align the positioning posts on both sides of the through - type taillight with the positioning holes at the location with the minimum radius of curvature of the outer panel of the rear door.

[0019] Then, use bolts to lock the two mounting points in the middle area of the taillight to the outer panel of the rear door.

[0020] Then, in the order from the center to both sides, first up and then down, lock the remaining six symmetrically distributed mounting points in sequence.

[0021] Finally, pass the taillight wiring harness through the sealing surface of the outer panel of the rear door, and apply sealant at the boss structure to prevent water vapor penetration.

[0022] The beneficial effects of the above - mentioned embodiments of the present invention are as follows:

[0023] Through structural integration and optimization, the present invention fully integrates the functions of the traditional taillight mounting plate into the outer panel of the rear door, achieving significant weight reduction and cost reduction. Specifically, the taillight mounting area of the outer panel of the rear door directly integrates mounting points, positioning holes, and sealing surfaces. The connection function of the traditional mounting plate is replaced by 8 Z - Y bidirectionally distributed mounting points (6 symmetric points + 2 middle points). This design not only reduces the mold cost of the independent mounting plate but also reduces the weight of a single vehicle, making a direct contribution to the vehicle's weight reduction and energy consumption optimization. In addition, the separate design of the mounting points and positioning holes enables the taillight mounting gap to be stably controlled within ±0.5 mm, significantly improving the assembly accuracy and visual consistency.

[0024] The synergistic optimization of the gradient curvature design and key structural parameters in the taillight mounting area of the present invention fundamentally solves the industry problem of stamping cracking of the outer panel with a small curvature. In traditional single - curvature outer panels, stress concentration is likely to occur in the area of sudden curvature change, resulting in local thinning or even cracking of the material during the stamping process. The present invention adopts a gradient curvature design, making the deformation of the material during stamping more gentle and the stress distribution more uniform, avoiding the stress peak caused by sudden curvature and thus significantly reducing the risk of stamping cracking. At the location with the minimum radius of curvature, the fillet width is increased to more than 35 mm (≥25 mm in the remaining areas). By guiding the material flow with a large fillet, the local thinning rate is reduced. As a key structure for stress dispersion, the fillet can effectively relieve the tensile stress of the material during the stamping process, avoiding forming defects caused by stress concentration. The combination of this gradient curvature and fillet parameters not only meets the requirement of smoothness in styling but also replaces the traditional "remedial" solution relying on the mounting plate through the optimization of the structure itself, achieving a double breakthrough in processability and functionality.

[0025] Through the coordinated operation of the multi-functional structures of the sealing surface, positioning holes, and mounting points, the present invention significantly improves the reliability of taillight installation and the environmental sealing performance. The sealing surface of the taillight adopts a boss structure supplemented by rounded corners, providing a stable filling space for the sealant and enhancing the waterproof performance. The waist-shaped design of the positioning holes and the mounting surface rotated 2° in the Z direction not only absorb the manufacturing tolerances of the vehicle body but also compensate for the impact of stamping springback on taillight positioning. The mounting points distributed in the Z-Y directions, through multi-directional mechanical constraints (resisting vertical vibration and lateral impact), reduce the amplitude of the taillight under dynamic conditions. The coordinated action of these structures achieves reliability equivalent to or even better than that of the traditional mounting plate solution without additional parts, simplifies the assembly process, and reduces the after-sales maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings forming a part of this invention are used to provide a further understanding of the invention. The schematic embodiments and descriptions thereof of the invention are used to explain the invention and shall not unduly limit the invention.

[0027] Figure 1 is a schematic structural diagram of the through-type taillight after installation of the present invention;

[0028] Figure 2 is an overall schematic diagram of the taillight installation area on the outer panel of the rear door of the present invention;

[0029] Figure 3 is a schematic structural diagram of the taillight installation area on the outer panel of the rear door of the present invention;

[0030] Figure 4 is a perspective view of the taillight installation area on the outer panel of the rear door of the present invention.

[0031] The schematic diagrams are for illustrative purposes only;

[0032] Among them, 1. Outer panel of the rear door; 11. Lower rounded corner at the location with the smallest radius of curvature in the safety area; 12. Taillight positioning hole at the location with the smallest radius of curvature; 13. Taillight sealing surface; 14. Taillight positioning hole; 15. Symmetrically distributed taillight mounting points; 16. Upper rounded corner at the location with the smallest radius of curvature in the installation area; 17. Lower rounded corner in the taillight installation area; 18. Intermediate area taillight mounting points; A. Taillight installation area;

[0033] 2. Through-type taillight;

[0034] 3. Inner panel of the rear door. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0036] Embodiment 1

[0037] In a typical implementation manner of the present invention, as Figures 1-4 shown, a through - type taillight installation structure with gradually changing curvature matching is provided, including an outer panel 1 of the rear door and a through - type taillight 2. A taillight installation area A is provided on the outer panel 1 of the rear door. Taillight installation points, taillight positioning holes, and taillight sealing surfaces are provided in the taillight installation area A. There are multiple taillight installation points, and the installation surfaces where the multiple taillight installation points are located are all in the same direction. There are multiple taillight positioning holes, which are respectively located at the middle position and the position with the minimum radius of curvature in the installation area. There are two taillight sealing surfaces, which are symmetrically distributed left and right about the middle position of the installation area, and the taillight sealing surfaces are used to seal the taillight beam.

[0038] The above - mentioned through - type taillight installation structure directly integrates the taillight installation function into the outer panel of the rear door, canceling the independent taillight installation plate in the traditional solution. This structure realizes the precise positioning, stable installation, and effective sealing of the taillight by setting taillight installation points, taillight positioning holes, and taillight sealing surfaces on the outer panel. The installation points and positioning holes are directly designed on the outer panel, and the uniform installation surface in the same direction ensures uniform material flow during stamping, avoiding the excessive thinning rate in the small - curvature area caused by uneven stress. The provided sealing surface provides a stable filling space for the sealant, and compared with the planar sealing of the traditional installation plate, it can greatly improve the waterproof ability. The above - mentioned installation structure innovatively designs the taillight installation area A of the outer panel of the rear door. On the basis of meeting the installation stability, sealing performance of the through - type taillight, and the stamping quality of the outer panel of the rear door, the taillight installation plate is reduced to achieve the purpose of cost reduction and weight reduction.

[0039] In this embodiment, the surface curvature within the taillight installation area shows a gradually changing pattern, with the curvature gradually decreasing from the middle to both sides of the installation area. The gradually changing curvature meets the smoothness requirements of the vehicle's appearance, avoids the abrupt transition of the traditional single - curvature outer panel, and improves visual coherence. The curvature - gradient design makes the stress distribution more uniform during the stamping process, reducing the risk of local cracking. The curvature - changing area is naturally transitioned through a gradually changing surface, avoiding stress concentration and enhancing the anti - deformation ability of the outer panel during the collision test. In a specific implementation manner, the curvature gradually decreases from the center in the Y - direction to both sides, and the curvature value gradually decreases from 1850 mm at the center to 400 mm at the position with the minimum radius of curvature. And according to the installation requirements, two symmetric positioning holes (i.e., the taillight positioning holes 12 at the position with the minimum radius of curvature) are located at the position with the minimum radius of curvature.

[0040] In this embodiment, three positioning holes are provided. One is disposed at the middle position of the taillight installation area, and the other two are respectively disposed at the positions with the minimum radius of curvature on both sides of the taillight installation area. Further, the positioning holes are all waist-shaped holes, and the positioning holes located at the positions with the minimum radius of curvature are rotated by a certain angle in the Z direction around the center of the waist-shaped hole.

[0041] Specifically, to ensure that the through-type taillight can be quickly and accurately positioned during installation, a total of 3 taillight positioning holes are designed in the outer panel taillight installation area. Among them, the taillight positioning holes 12 at the positions with the minimum radius of curvature are symmetrically distributed in the Z-X direction at the positions with the minimum radius of curvature of the taillight installation area, and the middle taillight positioning hole 14 in the installation area is distributed at the middle position of the taillight installation area. The taillight positioning holes 12 at the positions with the minimum radius of curvature are waist-shaped holes with a width of 14.1 mm in the Y direction and 12.1 mm in the Z direction, and the middle taillight positioning hole 14 in the installation area is a waist-shaped hole with a width of 12.1 mm in the Y direction and 14.1 mm in the Z direction. By setting the opening tolerances of the positioning holes 12 and 14 in the Z direction and the Y direction respectively, the positioning accuracy of the taillight in the Z-Y direction can be effectively ensured. Further, to meet the requirements of outer panel stamping forming and not affect the Z-direction positioning of the taillight, the taillight positioning holes 12 at the positions with the minimum radius of curvature are rotated by 2° in the Z direction around the center of the waist-shaped hole. At the same time, to meet the requirements of stamping forming, the lower fillet 11 and the upper fillet 16 of the positioning hole installation surface are synchronously increased to more than 35 mm, and a gradient surface connection is adopted between the positioning hole installation surface and the large surface of the installation area, which not only ensures the smooth forming of the outer panel during the stamping process but also ensures the positioning accuracy of the taillight.

[0042] In this embodiment, the taillight mounting points include symmetrically distributed taillight mounting points 15 and taillight mounting points 18 in the middle area. All the taillight mounting points 15 are distributed in the Z-Y two-way direction in the taillight installation area. In a specific implementation manner, there are six symmetrically distributed taillight mounting points, and there are two taillight mounting points in the middle area. The taillight mounting points in the middle area are located between the symmetrically distributed taillight mounting points on the left and right sides.

[0043] Specifically, there are a total of 6 taillight mounting points 15 symmetrically distributed in the Z-X direction and Z-Y two-way direction, and 2 taillight mounting points in the middle area. These 8 taillight mounting points are distributed in the Z-Y two-way direction in the taillight installation area, which can provide stable support and connection for the through-type taillight in multiple directions, effectively ensuring the firmness of the taillight installation and enabling it to withstand various vibrations and external forces during vehicle driving without displacement or loosening.

[0044] In this embodiment, the coordinate system definition (vehicle standard coordinate system) is as follows: X-axis: the front-rear direction of the vehicle (positive forward, negative backward). Y-axis: the left-right direction of the vehicle (positive left, negative right). Z-axis: the up-down direction of the vehicle (positive upward, negative downward). Symmetry plane: generally based on the Z-X plane (longitudinal central symmetry plane of the vehicle).

[0045] The Z-X symmetry in this embodiment means that the mounting points are symmetrically distributed with respect to the Z-X central symmetry plane of the vehicle. That is, if there is a mounting point on the left side, there must be a mirror mounting point at the symmetric position on the right side, and the absolute values of their Y coordinates are the same while the signs are opposite. Function: Ensure the balanced force on the taillight and avoid stress concentration or assembly offset caused by asymmetric installation. The Z-Y two-way distribution in this embodiment means that the mounting points are scattered in two dimensions, the Z-direction (up-down) and the Y-direction (left-right), rather than concentrated in a single axis direction. In this embodiment, among the 8 mounting points, some are located at a higher position (Z+), some are located at a lower position (Z-), and they are symmetrically arranged left and right along the Y-direction. The Z-direction distribution can resist the self-weight of the taillight and the up-down vibration during driving; the Y-direction distribution can resist lateral impacts (such as lateral wind or turning inertia force).

[0046] In this embodiment, the taillight mounting area is provided with a strip-shaped upper rounded corner and a strip-shaped lower rounded corner. The upper and lower rounded corners of the taillight mounting area serve as the connection area between the outer panel of the rear door and the through-type taillight. Further, the widths of the upper and lower rounded corners at the mounting surface of the positioning hole are greater than 35 mm, and the upper and lower rounded corners of the remaining taillight mounting area are variable rounded corners with a width controlled above 25 mm. A gradient curved surface is used to connect the mounting surface of the positioning hole and the large surface of the taillight mounting area.

[0047] This combination of gradient curvature and rounded corner parameters not only meets the requirements of smoothness in styling but also replaces the traditional "remedial" scheme that relies on a mounting plate through the optimization of the structure itself, achieving a double breakthrough in processability and functionality. Specifically, it has the following advantages:

[0048] Traditional single-curvature outer panels are prone to stress concentration in the area of sudden curvature change, resulting in local thinning or even cracking of the material during the stamping process. This embodiment adopts a gradient curvature design (the curvature gradually decreases from the middle to both sides), making the deformation of the material during stamping more gentle and the stress distribution more uniform. For example, the radius of curvature gradually changes from 1850 mm in the middle to 400 mm on both sides, avoiding the stress peak caused by sudden curvature and thus significantly reducing the risk of stamping cracking.

[0049] Further, at the location where the radius of curvature is the smallest, the width of the rounded corner increases to more than 35 mm (≥25 mm in the remaining areas). By guiding the material flow with a large rounded corner, the local thinning rate is reduced. The rounded corner, as a key structure for stress dispersion, can effectively relieve the tensile stress of the material during the stamping process and avoid forming defects caused by stress concentration.

[0050] A tapered surface is used to connect the positioning hole mounting surface and the large surface of the taillight mounting area. This design allows the material to transition naturally during the stamping process, avoiding material accumulation or tearing caused by stepped connections in traditional solutions. The tapered surface not only improves the qualification rate of stamping forming but also reduces the complexity and wear of the mold.

[0051] The positioning hole at the minimum curvature radius is designed as an oval shape and rotated 2° in the Z direction. This design compensates for the impact of stamping springback on positioning accuracy. The geometric tolerance of the oval hole allows for slight adjustment, and the rotated mounting surface further adapts to the stamping deformation in the small curvature area, ensuring the accuracy of taillight installation.

[0052] In this embodiment, the taillight sealing surface 13 adopts a boss structure. The taillight sealing surface adopts a boss structure, and the boss structure protrudes towards the direction of the through-type taillight. The taillight sealing surface of the boss structure is hermetically connected to the through-type taillight through a sealant or a gasket. The height space inside the taillight sealing surface is greater than 10 mm, and the fillet around the taillight sealing surface is maintained above 15 mm. Since the taillight wiring harness needs to pass through the outer panel of the rear door, two taillight wiring harness sealing surfaces 13 are symmetrically distributed in the Z-X direction within the installation area. To meet the sealing requirements of the taillight wiring harness, the sealing surface space is maintained above 10 mm, which can provide sufficient space for the filling of sealing materials and the construction of sealing structures, thereby effectively preventing the entry of water vapor and dust. At the same time, to meet the requirements of outer panel stamping forming, the fillet around the sealing surface is maintained above 15 mm. A larger fillet can reduce stress concentration during the stamping process, making the material easier to flow and form. In addition, the sealing surface adopts a boss structure, and this structural design can significantly increase the strength of the taillight installation area, effectively preventing the sealing surface from deforming due to force during the stamping forming process, thereby affecting the sealing effect.

[0053] The taillight installation area A in this embodiment contains multiple key structural parts. Among them, due to the need for through-type taillight installation and positioning, the positioning holes 12 are located at the minimum curvature radius and are symmetrically distributed with respect to the Z-X plane, jointly undertaking the task of accurately positioning the through-type taillight with the middle taillight positioning holes 14 in the installation area. The taillight wiring harness sealing surface 13 is used to ensure the sealing performance when the taillight wiring harness passes through the outer panel, preventing the intrusion of external water vapor, dust, etc. There are a total of 6 taillight installation points 15 symmetrically distributed in the Z-X and Z-Y directions, and there are 2 taillight installation points 18 in the middle area. These installation points are distributed in the Z-Y direction within the taillight installation area, totaling 8, which are the key connection points to ensure the firm installation of the through-type taillight. In addition, to ensure the integrity of the outer panel of the rear door, the connection between the outer panel and the taillight installation area is the upper and lower fillets 17 of the installation area. At the same time, the lower fillet 11 and the upper fillet 16 at the minimum curvature radius are distributed within the upper and lower fillets 17 of the installation area.

[0054] To ensure convenient and stable installation of the taillight, the taillight mounting holes and positioning holes are distributed in a two-way Z-Y pattern within the installation area. Except for the mounting holes and positioning holes in the middle position, the average gap between the remaining mounting holes and positioning holes in the Y direction is 100 mm. In addition, the upper and lower rounded corners 17 of the installation area are increased to more than 25 mm, and the overall installation surface is connected to the surrounding large surface by a gradient curved surface to meet the stamping forming of the installation area with a gradient curvature.

[0055] The structural design of this embodiment for the taillight installation area A of the rear door outer panel 1, through the layout and parameter optimization of each structural part, on the basis of meeting the dual high-quality requirements of the stamping forming of the rear door outer panel and the taillight installation, reduces the problem that the traditional through-type taillight needs to additionally increase a taillight mounting plate to meet the stamping requirements of the outer panel, and greatly reduces the R & D cost and the weight of the whole vehicle.

[0056] The specific installation process of the through-type taillight installation structure provided by this embodiment is as follows:

[0057] 1. Pre-positioning stage: Align the positioning holes

[0058] First step: Fix the middle positioning hole

[0059] During installation, first align and insert the middle positioning post of the through-type taillight into the middle taillight positioning hole on the rear door outer panel. This positioning hole is an oval hole with a width of 12.1 mm in the Y direction and 14.1 mm in the Z direction, which allows a slight adjustment in the Y direction to ensure the preliminary alignment of the taillight on the vehicle's central axis (Z-X plane).

[0060] Second step: Fix the positioning hole at the minimum radius of curvature

[0061] Next, align the positioning posts on both sides of the taillight with the oval positioning holes (12) at the minimum radius of curvature of the rear door outer panel. The installation surface of the positioning hole here has been pre-rotated 2° in the Z direction. When inserting, the taillight angle needs to be slightly adjusted to make it fully fit the rotating surface. This step can compensate for the stamping deformation in the small curvature area of the outer panel and avoid installation stress.

[0062] 2. Main installation stage: Lock the Z-Y two-way installation points

[0063] Third step: Fix the installation points in the middle area

[0064] Use bolts to lock the 2 installation points in the middle area of the taillight to the rear door outer panel. Since the curvature of this area is large (radius of 1850 mm), fixing it first can prevent the overall offset of the taillight.

[0065] Fourth step: Lock the symmetrically distributed installation points

[0066] Lock the remaining 6 Z-X symmetrically distributed mounting points in sequence from the center to both sides and from top to bottom. The specific sequence is: upper left mounting point → upper right mounting point; middle left mounting point → middle right mounting point; lower left mounting point → lower right mounting point; This step-by-step symmetric locking strategy can evenly distribute the assembly stress and avoid local deformation of the outer panel caused by unilateral stress.

[0067] 3. Sealing and final inspection stage

[0068] Step 5: Seal the taillight wiring harness

[0069] Pass the taillight wiring harness through the taillight sealing surface 13 of the outer panel and apply sealant (such as polyurethane glue) at the boss structure. The 15mm rounded corner design around the sealing surface ensures uniform filling of the glue and prevents water vapor penetration.

[0070] Step 6: Verify the installation accuracy

[0071] Use an optical measuring instrument to detect the gap between the taillight and the vehicle body (target value ≤ 0.5mm), and confirm no abnormal noise through vibration testing (frequency 5 - 50Hz).

[0072] The above-mentioned installation method of the through-type taillight ensures the stable installation of the taillight and avoids stamping defects of the outer panel of the rear door by optimizing the installation sequence and structural matching.

[0073] Embodiment 2

[0074] In a typical implementation of this embodiment, an installation method for an installation structure of a through-type taillight with a gradually changing curvature matching includes:

[0075] First, align and insert the middle positioning post of the through-type taillight into the middle taillight positioning hole on the outer panel of the rear door.

[0076] Next, align the positioning posts on both sides of the through-type taillight with the positioning holes at the location with the smallest radius of curvature of the outer panel of the rear door.

[0077] Then, use bolts to lock the two mounting points in the middle area of the taillight with the outer panel of the rear door; then, lock the remaining six symmetrically distributed mounting points in sequence from the center to both sides and from top to bottom.

[0078] Finally, pass the taillight wiring harness through the sealing surface of the outer panel of the rear door and apply sealant at the boss structure to prevent water vapor penetration.

[0079] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A through-type taillight installation structure with gradient curvature matching, characterized in that, It includes an outer panel of the rear door and a through-type taillight. A taillight mounting area is provided on the outer panel of the rear door. Taillight mounting points, taillight positioning holes and sealing surfaces are provided in the taillight mounting area. There are multiple taillight mounting points, and the mounting surfaces where the multiple taillight mounting points are located are all in the same direction. There are multiple taillight positioning holes, which are respectively located at the middle position and the position with the minimum radius of curvature in the mounting area. There are two taillight sealing surfaces, which are symmetrically distributed about the middle position of the mounting area. The taillight sealing surface is used to seal the taillight beam.

2. The through-type taillight mounting structure with gradually changing curvature matching according to claim 1, characterized in that, The overall surface curvature in the taillight mounting area shows a gradual change, and the curvature gradually decreases from the middle to both sides of the mounting area.

3. The through-type taillight installation structure with gradually changing curvature matching according to claim 2, characterized in that There are three positioning holes, one of which is located at the middle position of the taillight mounting area, and the other two are respectively located at the positions with the minimum radius of curvature on both sides of the taillight mounting area.

4. The through-type taillight installation structure with gradually changing curvature matching according to claim 1, characterized in that The taillight mounting points include symmetrically distributed taillight mounting points and taillight mounting points in the middle area. All taillight mounting points are distributed in a Z-Y two-way manner in the taillight mounting area.

5. The through-type taillight installation structure with gradually changing curvature matching as described in claim 4, characterized in that, There are six symmetrically distributed taillight mounting points, and there are two taillight mounting points in the middle area. The taillight mounting points in the middle area are located between the symmetrically distributed taillight mounting points on the left and right sides.

6. The through-type taillight mounting structure with gradually changing curvature matching as claimed in claim 1, characterized in that, The taillight mounting area is provided with a strip-shaped upper rounded corner and a strip-shaped lower rounded corner. The upper and lower rounded corners of the taillight mounting area are used as the connection area between the outer panel of the rear door and the through-type taillight.

7. The through-type taillight installation structure with gradually changing curvature matching as described in claim 6, characterized in that, A gradual change surface connection is adopted between the mounting surface of the positioning hole and the large surface of the taillight mounting area.

8. The through-type taillight installation structure with gradually changing curvature matching according to claim 1, characterized in that, The taillight sealing surface adopts a boss structure, which protrudes towards the direction of the through-type taillight. The taillight sealing surface of the boss structure is hermetically connected to the through-type taillight through a sealant or a gasket.

9. The through-type taillight installation structure with gradually changing curvature matching according to claim 1, characterized in that All the positioning holes adopt waist-shaped holes, and the positioning hole located at the position with the minimum radius of curvature rotates a certain angle in the Z direction around the center of the waist-shaped hole.

10. An installation method for the installation structure of the gradient curvature matching through-type taillight according to any one of claims 1-9, characterized in that, It includes: First, align and insert the middle positioning post of the through-type taillight into the middle taillight positioning hole on the outer panel of the rear door. Next, align the positioning posts on both sides of the through-type taillight with the positioning holes at the positions with the minimum radius of curvature on the outer panel of the rear door. Then, use bolts to lock the two mounting points in the middle area of the taillight to the outer panel of the rear door; then, in the order from the center to both sides, first up and then down, lock the remaining six symmetrically distributed mounting points in sequence. Finally, pass the taillight wiring harness through the sealing surface of the outer panel of the rear door, and apply sealant at the boss structure to prevent water vapor from penetrating.

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