Automobile d-pillar upper joint assembly and assembling method thereof

Abstract

The application relates to the field of D columns, in particular to an automobile D column upper joint assembly and an assembling method thereof, which comprises a rear top cross beam lower connecting plate and a rear top cross beam upper connecting plate arranged on the rear top cross beam lower connecting plate; the rear top cross beam upper connecting plate comprises a C column upper connecting plate and a top beam upper connecting plate; the C column upper connecting plate is overlapped with the top beam upper connecting plate; the C column upper connecting plate and the top beam upper connecting plate are simultaneously connected on the rear top cross beam lower connecting plate; the application discloses an automobile D column upper joint assembly; the rear top cross beam upper connecting plate comprises two plate structures, the subsequent torsion mode and torsion rigidity can be effectively improved by increasing support, the material thickness increase of the rear top cross beam upper connecting plate can be avoided, the automobile body weight is greatly increased, and the automobile body light weight is beneficial.

Description

Technical Field

[0001] This invention relates to the field of D-pillars, specifically to a connector assembly for an automotive D-pillar and its assembly method. Background Technology

[0002] Torsional stiffness and torsional modes of the body-in-white are important indicators of overall vehicle performance.

[0003] In the early stages of vehicle body structure development, it is necessary to ensure that the body-in-white has sufficient torsional modes and torsional stiffness to meet the target value requirements.

[0004] To avoid affecting the overall vehicle's durability, NVH performance, and handling stability due to excessively low torsional mode and torsional stiffness of the body-in-white.

[0005] Insufficient torsional mode and torsional stiffness of the body-in-white can lead to severe local deformation of the body during driving, resulting in noise problems such as abnormal noises, and can also cause strength problems such as cracking of sheet metal parts; insufficient torsional stiffness of the body-in-white can also affect handling and steering performance during the turning process of the whole vehicle.

[0006] Many domestic and foreign car models often fail to meet the vehicle body performance requirements in the early stages of development due to torsional mode and torsional stiffness, requiring extensive and repeated modifications in the later stages, which leads to cost and cycle issues.

[0007] The joint area on the D-pillar of traditional SUVs, MPVs and other vehicles is often a hollow structure. This structure itself has low rigidity and is prone to deformation, which in turn has an adverse effect on the torsional rigidity performance of the entire vehicle frame.

[0008] If you want to improve the rigidity of a traditional structure, you can usually only do so by increasing the thickness of the sheet metal. This method not only increases the weight of the vehicle body but also increases the cost, while the improvement effect is often not obvious.

[0009] The joint on the D-pillar is one of the most critical structures for the torsional mode and torsional stiffness of the body-in-white. The quality of the joint on the D-pillar directly affects the magnitude of the torsional mode and torsional stiffness of the body.

[0010] A well-designed D-pillar joint structure can effectively improve the torsional mode and torsional stiffness of the body-in-white; insufficient strength and stiffness of the PLG mounting point leads to cracking, excessive deformation and other adverse phenomena in the automotive products under development during testing.

[0011] The connectors on the D-pillar of most car models are three-way connectors. The structure of the three-way connector has always been a challenge in stamping and assembly welding because the three connectors are all mating surfaces that require high precision. Due to the inherent characteristics of the three-way connector and the depth required to ensure the performance requirements at this point, the three-way connector on the D-pillar is difficult to process. Generally, it requires additional processes and a longer mold debugging time to basically guarantee the precision requirements.

[0012] Therefore, a D-column joint structure with a reasonable and simple structural form that can improve torsional mode and torsional stiffness is what is needed now. Summary of the Invention

[0013] The purpose of this invention is to provide a D-pillar top joint assembly that has a simple structure and can increase the torsional mode and torsional stiffness value of the D-pillar top joint area.

[0014] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0015] A car D-pillar upper connector assembly includes a rear roof crossbeam lower connecting plate and a rear roof crossbeam upper connecting plate disposed on the rear roof crossbeam lower connecting plate;

[0016] The upper connecting plate of the rear top beam includes an upper connecting plate of the C-pillar and an upper connecting plate of the top beam; the upper connecting plate of the C-pillar overlaps with the upper connecting plate of the top beam; the upper connecting plate of the C-pillar and the upper connecting plate of the top beam are simultaneously connected to the lower connecting plate of the rear top beam.

[0017] The lower connecting plate of the rear top beam is also provided with a D-column upper partition plate. The D-column upper partition plate is arranged in the area between the upper connecting plate of the C-column and the lower connecting plate of the rear top beam, and is connected to the upper connecting plate of the C-column and the lower connecting plate of the rear top beam respectively.

[0018] The rear top crossbeam lower connecting plate is also provided with a rear door hinge mounting plate; the rear door hinge mounting plate is connected to both the rear top crossbeam lower connecting plate and the top beam upper connecting plate.

[0019] A spring mounting plate is also provided on the lower connecting plate of the rear top beam; the spring mounting plate is connected to both the lower connecting plate of the rear top beam and the upper connecting plate of the top beam.

[0020] The connecting plate on the C-pillar includes a first plate body, which is stepped and has a first welding flange at its edge.

[0021] The connecting plate on the top beam includes a second plate body, the second plate body includes a main plate body, and the main plate body is provided with a side plate body, the main plate body and the side plate body are arranged intersecting.

[0022] The spring mounting plate includes a mounting plate body, and two flanges are provided on the mounting plate body. The spring mounting plate is adhesively welded to the side surface of the lower connecting plate of the rear top cross member through the two flanges.

[0023] The vertical section of the rear door hinge mounting plate is in a shape of a capital letter 'J'.

[0024] For the D-pillar separator, the D-pillar separator includes a separator body, and connecting flanges are provided at both ends of the separator body.

[0025] An assembling method for an upper joint assembly of an automotive D-pillar is characterized in that the assembling method includes the following steps:

[0026] Step 1: Determine the models of all components of the upper joint assembly of the automotive D-pillar. After confirmation, proceed to the subsequent steps;

[0027] Step 2: Weld the D-pillar separator, the rear door hinge mounting plate, and the spring mounting plate on the lower connecting plate of the rear top cross member;

[0028] Step 3: After Step 2 is completed, weld the upper connecting plate of the C-pillar;

[0029] Step 4: After Step 3 is completed, weld the upper connecting plate of the top beam;

[0030] Step 5: After Step 4 is completed, the assembly of one upper joint assembly of the D-pillar is completed. If it is necessary to repeatedly assemble the upper joint assembly of the D-pillar, repeat the above Steps 1-4.

[0031] The advantages of the present invention are:

[0032] The present invention discloses an upper joint assembly of an automotive D-pillar. The upper connecting plate of the rear top cross member of the present invention includes two plate structures, which facilitates effectively improving the torsional mode and torsional stiffness by adding supports subsequently, avoids a significant increase in the body weight caused by an increase in the material thickness of the upper connecting plate of the rear top cross member, and is beneficial to the lightweight of the vehicle body. Brief Description of the Drawings

[0033] The following briefly describes the content expressed in each drawing of the specification of the present invention and the marks in the drawings:

[0034] Figure 1 is an exploded view of the D-pillar upper joint structure of the present invention;

[0035] Figure 2 is a schematic diagram of the D-pillar upper joint structure of the present invention;

[0036] Figure 3 is a sectional view at the A-A position of the present invention;

[0037] Figure 4 is a sectional view at the B-B position of the present invention;

[0038] Figure 5 This is a cross-sectional view of the CC position of the present invention;

[0039] Figure 6 This is an isometric side view of the rear assembly of the present invention;

[0040] Figure 7 This is a schematic diagram of the connecting plate on the C-pillar reinforcement plate of the present invention.

[0041] Figure 8 This is a schematic diagram of the connecting plate on the rear top crossbeam of the present invention.

[0042] Figure 9 This is a schematic diagram of the gas spring mounting plate of the present invention.

[0043] The attached diagram shows: 1. Connecting plate on the C-pillar reinforcement plate; 2. Upper partition plate on the D-pillar; 3. Rear door hinge mounting plate; 4. Upper connecting plate on the rear top crossbeam; 5. Gas spring mounting plate; 6. Lower connecting plate on the rear top crossbeam; 10. Original gas spring mounting plate; 11. Top cover; 12. Rear drainage channel body; 13. Side panel. Detailed Implementation

[0044] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0045] A D-pillar upper connector assembly for automobiles includes a rear roof crossbeam lower connecting plate 6 and a rear roof crossbeam upper connecting plate disposed on the rear roof crossbeam lower connecting plate 6; the rear roof crossbeam upper connecting plate includes a C-pillar upper connecting plate 1 and the roof beam upper connecting plate 4; the C-pillar upper connecting plate 1 overlaps with the roof beam upper connecting plate 4; the C-pillar upper connecting plate 1 and the roof beam upper connecting plate 4 are simultaneously connected to the rear roof crossbeam lower connecting plate 6; this invention discloses a D-pillar upper connector assembly for automobiles. The rear roof crossbeam upper connecting plate of this invention includes a two-plate structure, which facilitates subsequent addition of support to effectively improve torsional mode and torsional stiffness, avoids a significant increase in vehicle weight due to increased material thickness of the rear roof crossbeam upper connecting plate, and is beneficial for vehicle weight reduction.

[0046] Specifically, the D-pillar upper connector assembly disclosed in this invention mainly includes an upper connecting plate on the rear roof crossbeam. This invention splits the original upper connecting plate on the rear roof crossbeam into two parts: an upper connecting plate 4 on the aforementioned roof crossbeam and an upper connecting plate 1 on the C-pillar. The upper connecting plate 1 on the C-pillar rests on the lower connecting plate 6 on the rear roof crossbeam. The connection between the spring mounting plate 5 and the lower connecting plate 6 on the rear roof crossbeam is increased, which improves the torsional mode and torsional stiffness of the body-in-white, effectively enhances the local strength and stiffness at the PLG and gas spring mounting points, and avoids the phenomenon of severe local deformation or even damage at the mounting points of the automotive PLG and gas spring.

[0047] Furthermore, in this invention, a D-column partition plate 2 is also provided on the lower connecting plate 6 of the rear top beam. The D-column partition plate 2 is arranged in the area between the upper connecting plate 1 of the C-column and the lower connecting plate 6 of the rear top beam, and is connected to both the upper connecting plate 1 of the C-column and the lower connecting plate 6 of the rear top beam. In this invention, the D-column partition plate 2 plays a good role in increasing strength and can support the cavity formed by the upper connecting plate 1 of the C-column and the lower connecting plate 6 of the rear top beam, thus better ensuring the structural strength of the area of ​​the lower connecting plate 6 of the rear top beam.

[0048] Furthermore, in this invention, a rear door hinge mounting plate 3 is also provided on the lower connecting plate 6 of the rear top crossbeam; the rear door hinge mounting plate 3 is connected to both the lower connecting plate 6 of the rear top crossbeam and the upper connecting plate 4 of the top beam; the setting of the hinge mounting plate 3 ensures the structural strength of the connection between the rear door and the upper connector assembly of the D-pillar.

[0049] Furthermore, in this invention, a spring mounting plate 5 is also provided on the lower connecting plate 6 of the rear top beam; the spring mounting plate 5 is connected to both the lower connecting plate 6 of the rear top beam and the upper connecting plate 4 of the top beam; the spring mounting plate 5 acts as a reinforcing plate, which can not only increase the structural strength of the lower connecting plate 6 of the rear top beam, but also increase the structural strength of the connection area between the subsequent gas spring and the upper connector assembly of the D-pillar.

[0050] Specifically, the C-pillar connecting plate 1 in this invention includes a first plate body, which is stepped. This design facilitates the formation of an assembly cavity between the C-pillar connecting plate and the lower connecting plate 6 of the rear top crossbeam during subsequent connection, providing excellent clearance. Furthermore, the subsequent use of the D-pillar partition plate 2 ensures the connection strength between the C-pillar connecting plate and the lower connecting plate 6 of the rear top crossbeam. Additionally, the first plate body has a first welding flange at its edge; this first welding flange facilitates the connection between the C-pillar connecting plate and the lower connecting plate 6 of the rear top crossbeam.

[0051] Furthermore, in this invention, the top beam connecting plate 4 includes a second plate body, which includes a main plate body 4-1 and a side plate body 4-2 on the main plate body 4-1. The main plate body 4-1 and the side plate body 4-2 are arranged intersectingly. Here, the main plate body 4-1 and the side plate body 4-2 are equivalent to an inverted L-shaped structure, which facilitates the connection plate 4 on the top beam to be hung on the D-column, thereby ensuring the accuracy and stability of the installation of the top beam connecting plate 4.

[0052] Furthermore, in this invention, the spring mounting plate 5 includes a mounting plate body 5-1, which has two flanges. The spring mounting plate 5 is welded to the side of the lower connecting plate 6 of the rear top beam through the two flanges. The spring mounting plate 5 facilitates the installation and fixing of the gas spring. In addition, the flanges on the mounting plate body 5-1 facilitate the welding of the spring mounting plate 5 to the lower connecting plate 6 of the rear top beam. Furthermore, during actual connection, the spring mounting plate 5 is connected to the side of the lower connecting plate 6 of the rear top beam, providing a good bridging and reinforcement effect. In addition, the mounting plate body in this invention has a box structure, which can better increase the structural strength of the spring mounting plate.

[0053] Furthermore, the vertical cross-section of the rear door hinge mounting plate 3 described in this invention is shaped like a "Z". This design allows the rear door hinge mounting plate 3 to have a supporting function, which facilitates the support connection between the upper connecting plate 4 of the top beam and the lower connecting plate 6 of the rear top crossbeam, and better ensures the connection strength between the upper connecting plate 4 of the top beam and the lower connecting plate 6 of the rear top crossbeam.

[0054] Furthermore, in this invention, the D-pillar partition 2 serves as a reinforcing plate structure. Additionally, the D-pillar partition 2 includes a partition body with connecting flanges at both ends. The connecting flanges facilitate the subsequent assembly and connection of the D-pillar partition 2.

[0055] An assembly method for a connector assembly on a car D-pillar, characterized in that the assembly method includes the following steps:

[0056] Step 1: Determine the model numbers of each component in the D-pillar connector assembly of the car. After confirmation, proceed to the next steps.

[0057] Step 2: Weld the D-pillar partition plate 2, the rear door hinge mounting plate 3, and the spring mounting plate 5 onto the connecting plate 6 under the rear top crossbeam;

[0058] Step 3: After completing Step 2, weld the connecting plate 1 on the C-pillar;

[0059] Step 4: After completing Step 3, weld the connecting plate 4 on the top beam;

[0060] Step 5; After step 4 is completed, the assembly of one D-pillar connector assembly is complete. If the above D-pillar connector assembly needs to be assembled again, simply repeat steps 1-4.

[0061] In addition, in step 4, the top beam connecting plate 4 is overlapped with the C-pillar connecting plate 1. Through this operation, the welded C-pillar connecting plate 1 has a certain positioning function, which helps to better ensure the accuracy of the placement of the top beam connecting plate 4. Furthermore, the top beam connecting plate 4 overlaps with the C-pillar connecting plate 1 and is then welded to the rear top crossbeam lower connecting plate 6 in three layers, which can greatly improve the structural strength of this area. In addition, this welding area is located in the middle area of ​​the rear top crossbeam lower connecting plate 6, which is equivalent to a reinforcing rib structure in actual operation, greatly improving the structural strength of the rear top crossbeam lower connecting plate 6, and at the same time, better increasing the overall structural strength of the D-pillar upper joint assembly.

[0062] In step 2 above, it is required to weld the D-pillar partition plate 2 first, then weld the spring mounting plate 5; and finally weld the rear door hinge mounting plate 3. This invention adopts such a welding sequence to avoid mutual interference between welding processes, because the rear door hinge mounting plate is equivalent to the middle position. If the welding of the D-pillar partition plate 2 is completed and then the rear door hinge mounting plate 3 is welded, because the two are relatively close, it is easy to increase the deformation ratchet of the lower connecting plate 6 of the rear top crossbeam. Therefore, in order to avoid the above problems, this invention limits the above welding process.

[0063] specific;

[0064] This invention discloses an upper connector assembly for a car D-pillar, which mainly includes an upper connecting plate 1 for the C-pillar, a partition plate 2 for the D-pillar, a rear door hinge mounting plate 3, an upper connecting plate 4 for the roof beam, a gas spring mounting plate 5, and a lower connecting plate 6 for the rear roof crossbeam.

[0065] C-pillar upper connecting plate 1: Compared with the original structure, this structure adds a support to the lower connecting plate 6 of the rear top crossbeam. The support welding surface 1a (first welding flange) is connected to the lower connecting plate 6 of the rear top crossbeam by welding points. It is also connected to all four sides by welding points. See [link / details]. Figure 3 As shown in the cross-sectional view, the specific features of this structure include luggage rack mounting hole 1b, leakage hole 1c, positioning hole 1d, sunroof mounting plate mounting hole 1e, wiring harness mounting hole 1f, weight reduction hole 1g, and reinforcing rib 1h.

[0066] Top beam connecting plate 4: This structure is another component of the original rear top crossbeam connecting plate. It is connected to the C-pillar connecting plate 1 through the welding surface 4a, and is also connected to the surrounding area through welding points. The specific features of this structure include hinge mounting holes 4b, welding through holes 4c, gas spring mounting plate positioning holes 4d, positioning holes 4e, weight reduction holes 4f, and welding through holes 4g.

[0067] Gas spring mounting plate 5: This structure is mainly connected to the side of the lower connecting plate 6 of the rear top crossbeam by welding points through two flanges 5a, which improves the torsional mode and torsional stiffness of the body-in-white.

[0068] The special shape and overlapping form of the C-pillar connecting plate 1 of the D-pillar joint of this invention form a partition in the lower connecting plate 6 of the rear top crossbeam; a D-pillar partition plate 2 is set in the middle of the D-pillar joint, forming a support in the middle of the D-pillar joint cavity; the gas spring mounting plate 5 is designed in a "Z" shape, which also provides support to the side of the D-pillar joint cavity; the special structure and overlapping form of the rear door hinge mounting plate 3, these four special structures work together to improve the local stiffness of the D-pillar joint, thereby improving the torsional mode and torsional stiffness of the entire body-in-white frame.

[0069] In this invention, the C-pillar connecting plate is bulging. In actual arrangement, the C-pillar connecting plate is essentially upside down on the rear top crossbeam lower connecting plate 6. The C-pillar connecting plate mainly includes a first connecting plate 1-1 and a second connecting plate 1-2. The first connecting plate 1-1 and the second connecting plate 1-2 are intersecting, so that a space is formed on the inner side of the C-pillar connecting plate, making the C-pillar connecting plate have a bulging structure. After being connected to the rear top crossbeam lower connecting plate 6, the structural strength of the rear top crossbeam lower connecting plate 6 can be greatly improved, thereby increasing the overall structural strength of the D-pillar upper joint assembly.

[0070] Analysis shows that the torsional mode of the body-in-white is improved by about 5.8%, and the torsional stiffness of the body-in-white is improved by about 7.5%. This invention, through a series of special structures, surfaces and overlapping forms, enables the joint on the D-pillar to achieve better local stiffness under the same conditions, thereby achieving better connection and support for the body-in-white, and effectively improving the torsional mode and torsional stiffness of the body-in-white.

[0071] This invention splits the original rear top crossbeam upper connecting plate into two parts: a new top crossbeam upper connecting plate 4 and a C-pillar upper connecting plate 1. The C-pillar upper connecting plate 1 is supported on the rear top crossbeam lower connecting plate 6. The spring mounting plate 5 and the rear top crossbeam lower connecting plate 6 are connected, which improves the torsional mode and torsional stiffness of the body-in-white, effectively enhances the local strength and stiffness at the PLG and gas spring mounting points, and avoids the phenomenon of severe local deformation or even damage at the PLG and gas spring mounting points of the car.

[0072] In summary, the special shape and overlapping form of the C-pillar connecting plate 1 of the D-pillar upper connector in this invention form a partition on the lower connecting plate 6 of the rear top crossbeam; a D-pillar partition plate 2 is then set in the middle of the D-pillar upper connector, forming a support in the middle of the D-pillar upper connector cavity; the gas spring mounting plate 5 is designed in a "Z" shape, which also provides support to the side of the D-pillar upper connector cavity; the special structure and overlapping form of the rear door hinge mounting plate 3, these four special structures work together to improve the local stiffness of the D-pillar upper connector, thereby improving the torsional mode and torsional stiffness of the entire body-in-white frame. Analysis shows that the torsional mode of the body-in-white is improved by about 5.8%, and the torsional stiffness of the body-in-white is improved by about 7.5%, significantly reducing the risk of cracking and avoiding problems such as poor fit, abnormal noise, and even fatigue durability issues caused by insufficient torsional mode and stiffness between the body-in-white and the rear cover.

[0073] This addresses the issues of low torsional mode and torsional stiffness in the body-in-white frame structure during the design process, as well as insufficient stiffness and strength at the PLG and gas spring mounting points.

[0074] This invention proposes an automotive D-pillar connector assembly. Through a reasonable and simple structural form, it improves the connection strength of the D-pillar connector, effectively avoids stress concentration, and enhances the local stiffness of the D-pillar connector area, thereby improving the torsional mode and torsional stiffness of the entire vehicle frame.

[0075] The innovative aspects and advantages of this invention are as follows:

[0076] The original connecting plate on the rear top crossbeam was split into two parts, which makes it easier to effectively improve the torsional mode and torsional stiffness by adding support, and avoids the significant increase in vehicle weight caused by increasing the material thickness of the connecting plate on the rear top crossbeam, which is conducive to vehicle lightweighting.

[0077] The original rear top crossbeam upper connecting plate is split into two parts: a new rear top crossbeam upper connecting plate and a C-pillar upper connecting plate 1. The C-pillar upper connecting plate 1 is supported on the rear top crossbeam lower connecting plate 6, which greatly improves the rigidity and strength of the PLG mounting point.

[0078] The gas spring mounting plate 5 and the lower connecting plate 6 of the rear top crossbeam increase the connection and effectively improve the torsional mode and torsional stiffness, as well as the stiffness and strength of the gas spring mounting point;

[0079] The two-part structure is simple to design and facilitates the implementation of the stamping process;

[0080] It has good versatility; following this invention concept, D-pillar joint structures with different requirements can be reasonably designed.

[0081] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. An automotive D-pillar upper joint assembly, characterized by, It includes the lower connecting plate of the rear top cross beam and the upper connecting plate of the rear top cross beam arranged on the lower connecting plate of the rear top cross beam; The upper connecting plate of the rear top cross beam includes the upper connecting plate of the C column and the upper connecting plate of the roof beam; the upper connecting plate of the C column overlaps with the upper connecting plate of the roof beam; the upper connecting plate of the C column and the upper connecting plate of the roof beam are simultaneously connected to the lower connecting plate of the rear top cross beam; The upper connecting plate of the C column includes a first plate body, and the first plate body is in a stepped shape; A D-column upper partition is further provided on the lower connecting plate of the rear top cross beam. The D-column upper partition is arranged in the area between the upper connecting plate of the C column and the lower connecting plate of the rear top cross beam, and is respectively connected to the upper connecting plate of the C column and the lower connecting plate of the rear top cross beam.

2. The automotive D-pillar connector assembly according to claim 1, characterized in that, A rear door hinge mounting plate is further provided on the lower connecting plate of the rear top cross beam; the rear door hinge mounting plate is simultaneously connected to the lower connecting plate of the rear top cross beam and the upper connecting plate of the roof beam.

3. The automotive D-pillar connector assembly according to claim 2, characterized in that, A spring mounting plate is further provided on the lower connecting plate of the rear top cross beam; the spring mounting plate is simultaneously connected to the lower connecting plate of the rear top cross beam and the upper connecting plate of the roof beam.

4. The automotive D-pillar connector assembly according to claim 1, characterized in that, A first welding flange is provided at the edge of the first plate body.

5. The automotive D-pillar connector assembly according to claim 1, characterized in that, The upper connecting plate of the roof beam includes a second plate body. The second plate body includes a main plate body, and side plate bodies are provided on the main plate body. The main plate body and the side plate bodies intersect.

6. The automotive D-pillar connector assembly according to claim 3, characterized in that, The spring mounting plate includes a mounting plate body, and two flanges are provided on the mounting plate body. The spring mounting plate is welded to the side surface of the lower connecting plate of the rear top cross beam through the two flanges.

7. The automotive D-pillar connector assembly according to claim 2, characterized in that, The vertical section of the rear door hinge mounting plate is in a shape of a capital letter "J".

8. The automotive D-pillar connector assembly according to claim 1, characterized in that, For the D-column upper partition, the D-column upper partition includes a partition plate body, and connecting flanges are provided at both ends of the partition plate body.

9. A method for assembling the automotive D-pillar connector assembly according to any one of claims 1-8, characterized in that; The assembly method includes the following steps: Step 1: Determine the models of each component of the D-column upper joint assembly of the vehicle. After confirmation, proceed to the subsequent steps; Step 2: Weld the D-column partition plate, the rear door hinge mounting plate and the spring mounting plate on the lower connecting plate of the rear top cross beam; Step 3: After Step 2 is completed, weld the upper connecting plate of the C column; Step 4: After Step 3 is completed, weld the upper connecting plate of the roof beam; Step 5; After Step 4 is completed, the assembly of one D-column upper joint assembly is completed. If it is necessary to repeat the assembly of the above D-column upper joint assembly, repeat the above Steps 1-4.

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