Threshold assembly, vehicle body assembly with threshold assembly and threshold assembly platformization and generalization design method

Abstract

The invention relates to the field of doorsills, in particular to a doorsill assembly, a vehicle body assembly with the doorsill assembly and a doorsill assembly platformization and generalization design method.The doorsill assembly comprises a doorsill reinforcing plate, and a doorsill rear connecting plate is arranged at the end of the doorsill reinforcing plate; the doorsill reinforcing plate and the doorsill rear connecting plate are designed in a split mode. During use, the doorsill rear connecting plate is connected to the end of the doorsill reinforcing plate; the invention discloses a threshold assembly. The doorsill reinforcing plate and the doorsill rear connecting plate are designed in a split mode. The subsequent doorsill assembly can be conveniently used on different vehicle types; in addition, the doorsill reinforcing plate assembly continues to be used, the production efficiency is improved, the cost is reduced, and manpower is saved; the doorsill rear connecting plate is continuously used, and the doorsill reinforcing plate body can be changed according to the change of the wheelbase length and is continuously used after being modified; and the threshold assembly is continuously used, so that manpower is saved, and the development cost and the single-vehicle cost are reduced.

Description

Technical Field

[0001] The present invention relates to the field of door sills, and in particular to a door sill assembly, a vehicle body assembly having the door sill assembly, and a platform-based universal design method for the door sill assembly. Background Art

[0002] As competition in the automobile market continues to intensify, the development and iteration cycle of vehicle models continues to shorten, customers' perceived quality requirements are getting higher and higher, and the prices of vehicle models are getting lower and lower.

[0003] Therefore, vehicle models must be developed in a platform-based and universal manner to improve development efficiency, reduce one-time development investment, and improve development quality.

[0004] Existing threshold assemblies are designed one-to-one, and each vehicle model requires a separate set of threshold assemblies. This design and manufacturing method has high R&D costs and a long R&D cycle. It is unable to make targeted and timely adjustments based on market response and cannot meet the needs of customized vehicle models.

[0005] The existing patent 2022106896775 - A CTB electric vehicle integrated lower body platform architecture and vehicle does not clearly solve the above technical problems.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing door sill assembly. Summary of the invention

[0007] The purpose of the present invention is to provide a door sill assembly with high versatility.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A threshold assembly comprises a threshold reinforcement plate, wherein a threshold rear connecting plate is arranged at the end of the threshold reinforcement plate; the threshold reinforcement plate and the threshold rear connecting plate are designed separately; when in use, the threshold rear connecting plate is connected to the end of the threshold reinforcement plate.

[0010] The door sill reinforcement plate is a rolled part.

[0011] The door sill reinforcement plate includes a reinforcement plate body, and a reinforcement upper flange is provided on the reinforcement plate body; the reinforcement upper flange includes an end flange and a middle flange, and the middle flange and the end flange are staggered; the two ends of the middle flange are respectively connected to the end flange by reinforcement flanges.

[0012] The door sill rear connecting plate includes a connecting plate body, and a plate body flange is provided on the connecting plate body; the plate body flange includes a main body flange, and an overlapping flange is provided at the end of the main body flange, and the overlapping flange is staggered with the main body flange; the main body flange is overlapped with the reinforcing upper flange through the overlapping flange.

[0013] A positioning flange is provided on the side surface of the connecting plate body.

[0014] A vehicle body assembly comprises a rear wheel housing outer panel, a B-pillar assembly, an A-pillar assembly, a side panel outer panel and a door sill assembly; the rear wheel housing outer panel and the A-pillar assembly are connected to two ends of the door sill assembly; the B-pillar assembly is overlapped in the middle area of ​​the door sill assembly; the side panel outer panel is connected to the door sill assembly, the rear wheel housing outer panel, the B-pillar assembly and the A-pillar assembly.

[0015] The rear wheel arch outer panel includes a wheel arch body, the wheel arch body is provided with a wheel arch flange, the main flange of the plate body flange is overlapped on the wheel arch flange; the wheel arch flange includes a wheel arch main flange and a wheel arch overlapping edge; the wheel arch overlapping edge and the wheel arch main flange are staggered; the main flange is overlapped on the wheel arch overlapping edge.

[0016] A platform-based universal design method for a door sill assembly based on the vehicle body assembly, the design method comprising the following steps:

[0017] Step 1: Match the rear wheel housing outer panel with the door sill rear connecting plate;

[0018] Step 2: Match the A-pillar assembly with the door sill reinforcement plate;

[0019] Step 3: Match the B-pillar assembly with the door sill reinforcement plate;

[0020] Step 4: After step 3 is completed, the platform-based universal design of the door sill assembly is completed.

[0021] In step 1, it is required to first adjust the lock body layout position of the target vehicle model based on the end position of the stop edge on the rear connecting plate of the door sill; ensure that the stop edge of the rear door is the same as the stop edge on the rear connecting plate of the door sill.

[0022] When matching the B-pillar assembly with the door sill reinforcement plate, the step d at the corner of the B-pillar reinforcement plate in the B-pillar assembly, the matching place between the side panel outer panel and the door sill reinforcement plate and the door sill inner panel is required to be ≤15mm.

[0023] The advantages of the present invention are:

[0024] The invention discloses a threshold assembly, a vehicle body assembly having the threshold assembly, and a platform-based universal design method for the threshold assembly.

[0025] The invention discloses a threshold assembly; the threshold reinforcement plate and the threshold rear connection plate are designed as separate parts; and the subsequent threshold assembly can be conveniently used on different vehicle models.

[0026] In addition, the door sill reinforcement plate assembly of the present invention is continued to be used, which improves production efficiency, reduces costs, and saves manpower; the door sill rear connecting plate is continued to be used, and the door sill reinforcement plate body can be changed according to the length of the wheelbase and modified and continued to be used; by continuing to use the door sill assembly, it is achieved to save manpower and reduce development costs and bicycle costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0028] Figure 1 It is a front view of the door sill reinforcement plate of the present invention.

[0029] Figure 2 It is a rear view of the rocker reinforcement plate of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the matching of the door sill reinforcement plate and the rear wheel cover outer plate in the present invention.

[0031] Figure 4 It is a schematic structural diagram of the door sill reinforcement plate and adjacent components in the present invention when they are matched.

[0032] Figure 5 Schematic diagram of the matching relationship between the threshold reinforcement plate and the threshold inner plate in the present invention

[0033] Figure 6 Schematic diagram of the relationship between the door sill assembly and the B-pillar inner panel in the present invention

[0034] Figure 7 Schematic diagram of the relationship between the door sill assembly and the side panel in the present invention

[0035] Figure 8 for Figure 7 Section view along AA.

[0036] The marks in the above figure are:

[0037] 1. Door sill assembly, 11. Door sill reinforcement plate, 12. Door sill rear connecting plate. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0039] A threshold assembly 1 includes a threshold reinforcement plate 11, wherein a threshold rear connecting plate 12 is disposed at the end of the threshold reinforcement plate 11; the threshold reinforcement plate 11 and the threshold rear connecting plate 12 are designed as separate bodies; when in use, the threshold rear connecting plate 12 is connected to the end of the threshold reinforcement plate 11; the present invention discloses a threshold assembly 1; the threshold reinforcement plate 11 and the threshold rear connecting plate 12 are designed as separate bodies; thus, the threshold assembly 1 can be conveniently used on different vehicle models in the future.

[0040] In addition, the threshold reinforcement plate 11 assembly of the present invention is continued to be used, which improves production efficiency, reduces costs, and saves manpower; the threshold rear connecting plate 12 is continued to be used, and the threshold reinforcement plate 11 body can be changed according to the length of the wheelbase and modified and continued to be used; by continuing to use the threshold assembly 1, it is possible to save manpower and reduce development costs and bicycle costs.

[0041] Specifically, the threshold assembly 1 disclosed in the present invention mainly includes a threshold reinforcement plate 11, and a threshold rear connecting plate 12 is provided at the end of the threshold reinforcement plate 11; the threshold reinforcement plate 11 and the threshold rear connecting plate 12 are designed separately; in other words, the threshold reinforcement plate 11 disclosed in the present invention is assembled from two parts, which facilitates the subsequent production and processing of the threshold reinforcement plate 11.

[0042] In addition, in the subsequent platform design, after the rocker rear connecting plate 12 is continued to be used, the rocker reinforcement plate 11 can be selected to have different lengths as needed, so as to realize the use of the rocker assembly 1 on vehicles with different wheelbases.

[0043] Furthermore, the threshold reinforcement plate 11 in the present invention is a rolled part; in the present invention, the threshold reinforcement plate 11 is a rolled part, and the length of the threshold reinforcement plate 11 can be freely selected in the subsequent selection, so that it is easier to achieve a combination of a new threshold assembly 1 without opening a new mold, thereby realizing the continued use or sharing of the threshold assembly 1; traditional threshold reinforcement plates 11 are mostly stamped parts, the threshold reinforcement plate 11 cannot be lengthened, and the versatility is poor.

[0044] Furthermore, the threshold reinforcement plate 11 in the present invention includes a reinforcement plate body 111, and a reinforcement upper flange 112 is provided on the reinforcement plate body 111; at the same time, a reinforcement lower flange is provided below the reinforcement plate body 111; the reinforcement plate body 111 includes a longitudinal plate, and an end plate is respectively provided at both ends of the longitudinal plate, and the end plate is arranged to intersect with the longitudinal plate. Based on the above design, the vertical cross-section of the threshold reinforcement plate 11 in the present invention is in the shape of a "J", and the vertical cross-section of the threshold inner plate 7 is also in the shape of a "J". The threshold reinforcement plate 11 and the threshold inner plate 7 are arranged opposite to each other. Based on such an arrangement, the threshold assembly 1 forms an internal hollow structure, which well ensures the structural strength of the threshold assembly 1.

[0045] Furthermore, the reinforced upper flange 112 in the present invention includes an end flange 1122 and a middle flange 1121, and the middle flange 1121 and the end flange 1122 are staggered; the two ends of the middle flange 1121 are connected to the end flange 1122 by reinforcing flanges 1123 respectively; based on such a setting, the present invention forms a step platform with the middle flange 1121 and the end flange 1122, which can not only ensure the strength of the reinforced upper flange 112 for subsequent use, but also play a good positioning role, ensuring the flatness of the connection between the door sill reinforcement plate 11 and the B-pillar reinforcement plate 6 after the B-pillar reinforcement plate 6 is overlapped, so as to facilitate the subsequent installation of the side outer panel 9, and the fit of the side outer panel 9 at the connection between the reinforced upper flange 112 and the B-pillar reinforcement plate 6, avoiding the problem of excessive gap between the side outer panel 9 and the reinforced upper flange 112 and the B-pillar reinforcement plate 6.

[0046] Furthermore, in the present invention, the door sill rear connecting plate 12 includes a connecting plate body 121, and the connecting plate body 121 is provided with a plate body flange 122; the plate body flange 122 includes a main body flange, and the end of the main body flange is provided with a lap flange 1221, and the lap flange 1221 is staggered with the main body flange; the main body flange is connected to the lap flange 1221 through a transition flange. Based on the above design, the plate body flange 122 disclosed in the present invention is essentially a step plate, and the subsequent use When in use, the main body flange is overlapped with the reinforced upper flange 112 through the overlapping flange 1221; based on such a setting, the flatness of the overlapping part of the plate body flange 122 and the reinforced upper flange 112 is facilitated, and it is avoided that when the flange of the subsequent side outer panel 9 is fitted with the overlapping part of the plate body flange 122 and the reinforced upper flange 112, there is a large gap between the flange of the side outer panel 9 and the connection between the plate body flange 122 and the reinforced upper flange 112 due to the bulge at the overlapping part of the plate body flange 122 and the reinforced upper flange 112.

[0047] In addition, a positioning flange 124 is provided on the side of the connecting plate body 121; when the positioning flange 124 is used later in the present invention, the positioning flange 124 presses against the rear wheel housing outer panel 4, so as to facilitate the X-axis positioning of the door sill assembly 1 and the rear wheel housing outer panel 4.

[0048] A vehicle body assembly comprises a rear wheel housing outer panel 4, a B-pillar assembly, an A-pillar assembly, a side panel outer panel 9 and a door sill assembly 1; the rear wheel housing outer panel 4 and the A-pillar assembly are connected to the two ends of the door sill assembly 1; the B-pillar assembly is overlapped in the middle area of ​​the door sill assembly 1; the side panel outer panel 9 is connected to the door sill assembly 1, the rear wheel housing outer panel 4, the B-pillar assembly and the A-pillar assembly; the rear wheel housing outer panel 4, the B-pillar assembly, the A-pillar assembly, the side panel outer panel 9 and the door sill assembly 1 of the present invention combine the main structure of the side panel assembly; the structural strength of the side panel assembly is ensured.

[0049] Furthermore, in the present invention, the rear wheel cover outer plate 4 includes a wheel cover body 4-1, and the wheel cover body 4-1 is provided with a wheel cover flange 4-2, and the main flange in the plate flange 122 is overlapped on the wheel cover flange 4-2; the wheel cover flange 4-2 includes a wheel cover main flange and a wheel cover overlap edge; the wheel cover overlap edge and the wheel cover main flange are staggered; the wheel cover main flange is connected to the wheel cover overlap plate, and the main flange is overlapped on the wheel cover overlap edge; in actual use; it is required that the wheel cover in the rear wheel cover body 4-1 The plane where the outermost side of the main flange lies is in the same plane as the plane where the outer side surface of the main flange in the rear connecting plate 12 of the door sill lies; in essence, this requires the flatness of the overlap between the wheel cover flange 4-2 on the wheel cover body 4-1 and the main flange in the rear connecting plate 12 of the door sill, ensuring that the wheel cover flange 4-2 is arranged flush with the main flange; thereby avoiding the need to ensure the flatness of the joint where the flange on the side outer panel 9 fits with the main flange of the wheel cover and the main flange during subsequent use, thereby avoiding the formation of a large assembly gap at the joint.

[0050] A platform-based universal design method for a door sill assembly 1 based on the vehicle body assembly, the design method comprising the following steps:

[0051] Step 1: The rear wheel housing outer panel 4 is matched with the door sill rear connecting panel 12;

[0052] Step 2: Match the A-pillar assembly with the door sill reinforcement plate 11;

[0053] Step 3: Match the B-pillar assembly with the door sill reinforcement plate 11;

[0054] Step 4: After step 3 is completed, the platform-based universal design of the door sill assembly 1 is completed.

[0055] The present invention uses the existing door sill assembly 1 structure to redesign the various components connected thereto during design, thereby realizing the design of the side panel assembly of a new vehicle without redesigning the door sill assembly 1; thereby realizing a platform-based universal design of the door sill assembly 1.

[0056] In step 1 described in the present invention, it is required to first adjust the layout position of the lock 3 of the target vehicle model based on the end position of the stop edge 123 on the rear connecting plate of the threshold, ensure that the stop edge of the rear door is the same as the stop edge 123 on the rear connecting plate of the threshold; specifically, through the preliminary model analysis of CAE, determine the end position of the stop edge of the rear connecting plate 12 of the threshold, then by comparing with the stop of the target vehicle model, and adjusting the layout angle of the lock 3, ensure that the end position of the stop edge of the rear door in the front direction of the vehicle is the same as the main flange shape on the rear connecting plate 12 of the threshold of the present invention, thereby completing the first condition for the use of the rear connecting plate 12 of the threshold to meet the requirement.

[0057] In addition, in the present invention, when matching the B-pillar assembly with the door sill reinforcement plate 11, it is required that the step d at the corner of the B-pillar reinforcement plate 6 in the B-pillar assembly, the side outer panel 9, the door sill reinforcement plate 11 and the door sill inner panel 7 match is ≤15mm; by limiting the size at this location, it is convenient to use with the sealing strip 10, avoiding the location being too large to affect the connection between the sealing strip 10 and the location, thereby avoiding the location being too large to affect the sealing performance of the sealing strip 10.

[0058] specific:

[0059] The door sill assembly 1 disclosed in the present invention mainly includes a door sill reinforcement plate 11 and a door sill rear connecting plate 12 .

[0060] The rocker reinforcement plate 11 is a rolled part.

[0061] The door sill reinforcement plate 11 includes a reinforcement plate body 111, on which a reinforcement upper flange 112 is provided; the reinforcement upper flange 112 includes an end flange 1122 and a middle flange 1121, and the middle flange 1121 and the end flange 1122 are staggered; the two ends of the middle flange 1121 are connected to the end flange 1122 by reinforcement flanges 1123 respectively.

[0062] The door sill rear connecting plate 12 includes a connecting plate body 121, on which a plate body flange 122 is provided; the plate body flange 122 includes a main body flange, at the end of which a lap flange 1221 is provided, and the lap flange 1221 is staggered with the main body flange; the main body flange is overlapped with the reinforcing upper flange 112 through the lap flange 1221.

[0063] A positioning flange 124 is provided on the side surface of the connecting plate body 121 .

[0064] The rear wheel arch outer panel 4 includes a wheel arch body 4-1, on which a wheel arch flange 4-2 is provided, and the main flange in the plate flange 122 is overlapped on the wheel arch flange 4-2; the wheel arch flange 4-2 includes a wheel arch main flange and a wheel arch overlapping edge; the wheel arch overlapping edge and the wheel arch main flange are staggered; the main flange is overlapped on the wheel arch overlapping edge.

[0065] The A-pillar assembly includes an A-pillar lower reinforcement plate 5 , and a structure 5 - 1 matching with the door sill reinforcement plate is provided at the end of the A-pillar lower reinforcement plate 5 .

[0066] B-pillar reinforcement plate 6, rocker inner plate 7, B-pillar inner plate 8, side panel outer plate 9, sealing strip 10 and rocker inner reinforcement plate.

[0067] The specific implementation is:

[0068] The rocker inner panel 7 is mostly a platform member, and the rocker reinforcement plate 11 and the rocker inner panel 7 are mutually matched structures.

[0069] The door sill rear connecting plate 12 is related to the stop edge of the door opening. Since the stop edge of the door opening is related to the shape, it is very difficult to continue to use. Therefore, the door sill reinforcement plate 11 is relatively simple to continue to use.

[0070] Method for connecting the door sill rear plate 12:

[0071] First, the end position of the stop edge of the door sill rear connecting plate 12 is determined through CAE preliminary model analysis. At this time, by comparing the stop edge of the target vehicle model and adjusting the layout angle of the lock 3, it is ensured that the end position of the stop edge of the rear door is exactly the same as the stop edge in the front direction of the vehicle (such as Figure 1 As shown), the first condition for completing the sill rear connecting plate 12 is satisfied;

[0072] Then, features are made locally on the rear wheel cover outer panel 4 to match the door sill rear connecting plate 12 to achieve connection. At the same time, the rear wheel cover outer panel 4 is matched with the door sill rear connecting plate 12 or the side outer panel 9 is matched with the door sill rear connecting plate 12 to achieve connection. A positioning flange 124 is provided on the side of the connecting plate body 121; the positioning flange 124 can be a single piece with the wheel cover body 4-1, and other methods can also be used to achieve it.

[0073] The method of using the door sill reinforcement plate 11 is as follows:

[0074] The door sill body is ensured to remain unchanged by adjusting the matching between the A-pillar lower reinforcement plate 5 and the door sill reinforcement plate 11, and the B-pillar reinforcement plate 6 is ensured to remain unchanged by adjusting the boundary 6-1 between the B-pillar reinforcement plate 6 and the door sill reinforcement plate;

[0075] The matching boundary 7 - 1 of the rocker inner panel 7 and the B-pillar inner panel 8 with the rocker reinforcement plate matches the boundary 6 - 1 of the B-pillar reinforcement plate 6 and the boundary of the rocker reinforcement plate 11 ;

[0076] By adjusting R1 and R2 of the B-pillar reinforcement plate 6, the step d≤15mm (e.g. Figure 5 As shown), in order to ensure the airtightness of the whole vehicle.

[0077] In order to ensure that the d value meets the requirement, it is also possible to adjust the trimming of the sill reinforcement plate 11 instead of adjusting R1 and R2. The disadvantage of this solution is that it affects the material utilization rate of the sill reinforcement plate 11.

[0078] The matching structure of the sealing strip 10 and the side outer panel 9 ensures that there is no problem with the sealing (such as Figure 7 shown);

[0079] In order to meet the performance requirements, an internal reinforcement structure (such as Figure 8Here, different parts combinations are required according to different performance requirements.

[0080] When the wheelbase of the vehicle model changes, resulting in the sill reinforcement plate 11 assembly being unable to be used as a whole, the sill rear connecting plate 12 can be lowered and moved a certain distance forward and backward of the vehicle, and the sill rear connecting plate 12 can be used as a whole.

[0081] When the wheelbase changes, the position of the B-pillar may also change. At this time, the position of 1-1 matching the B-pillar changes. At this time, the position of 1-1 can be adjusted by adjusting the length of the door sill to meet the matching requirements of 1-1, so as to achieve a new assembly without opening a new mold. If the door sill reinforcement plate 11 is a stamping part, the door sill can be shortened and cannot be lengthened. However, the door sills are basically rolled parts now, and the length of the door sill can be freely selected, so that it is easier to achieve without opening a new mold, thereby obtaining a new combination of parts and achieving sharing.

[0082] The overall matching method is as follows:

[0083] By adjusting the arrangement of the rear door lock 3, it is ensured that the door opening stoppers within the range of the connecting plate 12 at the rear of the door sills of several vehicle models are the same.

[0084] The B-pillar reinforcement plate 6 and the B-pillar inner plate 8 are trimmed and adjusted to ensure that the matching steps of the B-pillars are the same.

[0085] When adjusting the B-pillar reinforcement plate 6 and the B-pillar inner plate 8, it is necessary to ensure the sealing at the R corner.

[0086] The assembly can be reused by adjusting the matching surface between the wheel house outer panel and the door sill rear connecting plate 12 .

[0087] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A door sill assembly, characterized in that: It comprises a threshold reinforcement plate, the end of which is provided with a threshold rear connecting plate; the threshold reinforcement plate and the threshold rear connecting plate are designed separately; when in use, the threshold rear connecting plate is connected to the end of the threshold reinforcement plate.

2. A door sill assembly according to claim 1, characterized in that: The door sill reinforcement plate is a rolled part.

3. A door sill assembly according to claim 1, characterized in that: The door sill reinforcement plate includes a reinforcement plate body, and a reinforcement upper flange is provided on the reinforcement plate body; the reinforcement upper flange includes an end flange and a middle flange, and the middle flange and the end flange are staggered; the two ends of the middle flange are respectively connected to the end flange by reinforcement flanges.

4. A door sill assembly according to claim 3, characterized in that: The door sill rear connecting plate includes a connecting plate body, and a plate body flange is provided on the connecting plate body; the plate body flange includes a main body flange, and an overlapping flange is provided at the end of the main body flange, and the overlapping flange is staggered with the main body flange; the main body flange is overlapped with the reinforcing upper flange through the overlapping flange.

5. A door sill assembly according to claim 4, characterized in that: A positioning flange is provided on the side surface of the connecting plate body.

6. A vehicle body assembly, characterized in that: It comprises a rear wheel housing outer panel, a B-pillar assembly, an A-pillar assembly, a side outer panel and a threshold assembly as described in any one of claims 1 to 5; the rear wheel housing outer panel and the A-pillar assembly are connected to both ends of the threshold assembly; the B-pillar assembly is overlapped in the middle area of ​​the threshold assembly; the side outer panel is connected to the threshold assembly, the rear wheel housing outer panel, the B-pillar assembly and the A-pillar assembly.

7. A vehicle body assembly according to claim 6, characterized in that: The rear wheel arch outer panel includes a wheel arch body, the wheel arch body is provided with a wheel arch flange, the main flange of the plate body flange is overlapped on the wheel arch flange; the wheel arch flange includes a wheel arch main flange and a wheel arch overlapping edge; the wheel arch overlapping edge and the wheel arch main flange are staggered; the main flange is overlapped on the wheel arch overlapping edge.

8. A platform-based universal design method for a door sill assembly of a vehicle body assembly according to any one of claims 6 to 7, characterized in that; The design method comprises the following steps: Step 1: Match the rear wheel housing outer panel with the door sill rear connecting plate; Step 2: Match the A-pillar assembly with the door sill reinforcement plate; Step 3: Match the B-pillar assembly with the door sill reinforcement plate; Step 4: After step 3 is completed, the platform-based universal design of the door sill assembly is completed.

9. The platform-based universal design method for a door sill assembly according to claim 8, characterized in that: In step 1, it is required to first adjust the lock body layout position of the target vehicle model based on the end position of the stop edge on the rear connecting plate of the door sill; ensure that the stop edge of the rear door is the same as the stop edge on the rear connecting plate of the door sill.

10. The platform-based universal design method for a door sill assembly according to claim 8, characterized in that: When matching the B-pillar assembly with the door sill reinforcement plate, the step d at the corner of the B-pillar reinforcement plate in the B-pillar assembly, the matching place between the side panel outer panel and the door sill reinforcement plate and the door sill inner panel is required to be ≤15mm.

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