Modular dual topology b-pillar structure

Abstract

The utility model discloses a modularization double topology B column structure, its vertical setting fixed on the car body structure, including and side by side distribution's main topology column assembly and auxiliary topology column assembly, wherein: main topology column assembly, it includes longitudinal extension and mutually parallel main topology column inner plate, main reinforcing plate, main side wall outer plate and outer closing board, main topology column inner plate, main side wall outer plate and the both side edges of outer closing board are all configured as first abutting edge, and three are through first abutting edge and are enclosed and fixed, auxiliary topology column assembly, it includes longitudinal extension and mutually parallel auxiliary topology column inner plate, auxiliary reinforcing plate and auxiliary side wall outer plate, the utility model discloses technical scheme, its simple structure, easy to realize and low in cost, solve the existing vehicle type manufacturing due to the adoption single vertical column integral type structure, appear switching compatibility, long production cycle, difficult to satisfy the problem of the market to the multi -scene vehicle type quick iteration.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a modular dual-topology B-pillar structure. Background Technology

[0002] Currently, the B-pillar structure design of vans with rear cargo beds and light trucks with independent cabs has significant flaws: due to differences in functional requirements and rear body structure, the B-pillars of these two types of vehicles have extremely low commonality, resulting in insufficient production line flexibility and difficulty in adapting to rapidly iterating market demands. For example, the B-pillar of a light truck only serves the cab, integrating seat belt anchor points, door lock hinge mounting points, and providing side structural strength and collision protection; while the B-pillar of a van, in addition to fulfilling the same cab functions as a truck, also needs to provide mounting support for the rear sliding door, making its rear structure completely different from that of a truck with a cab.

[0003] Due to the aforementioned differences, existing technologies generally employ independently developed single-pillar integrated structures for the B-pillars of both vehicle types, resulting in non-interchangeability of components. As a critical load-bearing component on the side of the vehicle body, the B-pillar has a complex manufacturing process. This situation necessitates that manufacturers configure completely different dedicated tooling, fixtures, and welding lines for the two vehicle types on their production lines, leading to high costs and long cycles for each model changeover, severely hindering rapid switching and iteration across various vehicle scenarios. Therefore, a modular dual-topology B-pillar structure is urgently needed to solve these problems. Utility Model Content

[0004] This utility model provides a modular dual-topology B-pillar structure, which is simple in structure, easy to implement, and low in cost. It solves the problems of poor switching compatibility and long production cycles in existing vehicle manufacturing due to the use of a single-pillar integrated structure, making it difficult to meet the market's demand for rapid iteration of models for multiple scenarios. Its main technical solution is as follows:

[0005] A modular dual-topology B-pillar structure, erected and fixed to the vehicle body structure, is characterized by comprising a main topology pillar assembly and an auxiliary topology pillar assembly arranged side by side; wherein: the main topology pillar assembly includes a longitudinally extending and parallel main topology pillar inner plate, a main reinforcing plate, a main side panel outer plate, and an outer sealing plate; both sides of the main topology pillar inner plate, the main side panel outer plate, and the outer sealing plate are configured as first abutting edges, and the three are fixed together by the first abutting edges; one side of the main reinforcing plate is installed between the main topology pillar inner plate and the main side panel outer plate, and the other side is installed on the main side panel... The outer panel is fixed to the outer sealing panel; the auxiliary topology column assembly includes a longitudinally extending and parallel auxiliary topology column inner panel, an auxiliary reinforcing plate, and an auxiliary side panel outer panel; both sides of the auxiliary topology column inner panel and the auxiliary side panel outer panel are configured as second abutment edges, and the two are fixed to each other by the second abutment edge on one side, and the second abutment edge on the other side is fixed to the outer side wall of the main side panel outer panel and the outer sealing panel respectively; one side of the auxiliary reinforcing plate is installed and fixed between the auxiliary topology column inner panel and the auxiliary side panel outer panel, and the other side is installed between the main side panel outer panel and the outer sealing panel and is stacked and fixed with the main reinforcing plate.

[0006] Preferably, the first abutment of the main topology column assembly and the second abutment of the auxiliary topology column assembly are configured as stepped flange structures for welding and fixing.

[0007] Preferably, the first abutment edge where the inner plate of the main topology column is fixed to the outer sealing plate is provided with mutually compatible concave and convex components, which are used for precise docking of the main reinforcing plate and the outer sealing plate.

[0008] Preferably, the first abutment edge where the inner plate of the main topology column is fixed to the outer sealing plate is provided with a number of corresponding positioning holes, which are used for quick positioning during welding.

[0009] Preferably, the concave-convex components and the positioning holes are respectively arranged along the length direction of the inner plate and the outer sealing plate of the main topology column.

[0010] Preferably, both the main topology column assembly and the auxiliary topology column assembly are provided with weight-reducing holes and reinforcing rib structures.

[0011] Preferably, the second abutting edge on the other side of the auxiliary topology column inner plate and the auxiliary side panel outer plate is detachably fixed to the outer wall of the main side panel outer plate and the outer sealing plate.

[0012] Preferably, the second abutment on the other side of the auxiliary topology column inner plate and the auxiliary side panel outer plate is fixed to the outer wall of the main side panel outer plate and the outer sealing plate by bolt connection.

[0013] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0014] (1) This utility model provides a modular dual-topology B-pillar structure, which is simple in structure, easy to implement and low in cost. It solves the problem that existing vehicle manufacturing uses a single-pillar integrated B-pillar structure, which results in poor switching compatibility, long production cycle and difficulty in meeting the market's rapid iteration of multi-scenario vehicle models. This utility model redesigns the traditional B-pillar structure into two independent modules: a main topology pillar assembly and an auxiliary topology pillar assembly. The resulting dual-topology B-pillar structure can be produced on the same production line and can be adapted to different vehicle models. For example, a single main topology pillar assembly can be adapted to a truck with a single cab, integrating side support, door lock installation and other functions; the auxiliary topology pillar assembly, combined with the main topology pillar assembly to form a dual-topology B-pillar structure, can also be adapted to a medium-sized van with a rear cargo box. The two parts can be switched independently or flexibly, effectively improving production flexibility and vehicle compatibility, and significantly enhancing the adaptability to multi-scenario vehicle models.

[0015] (2) In this technical solution, the concave and convex components and the positioning holes form a dual positioning system. The two can achieve the initial positioning of the inner plate of the main topology column and the outer sealing plate during assembly, reduce the amount of manual alignment work, ensure the accuracy of component docking, and eliminate the need for repeated adjustments. The two work together to improve assembly efficiency and quality stability.

[0016] (3) In this technical solution, the B-pillar structure is optimized by using the design of weight-reducing holes and reinforcing ribs, which effectively achieves the overall lightweighting purpose while ensuring a certain structural strength and enhancing impact resistance.

[0017] (4) In this technical solution, the second abutment on the other side of the auxiliary topology column inner plate and the auxiliary side panel outer plate is fixed to the outer wall of the main side panel outer plate and the outer sealing plate in a detachable manner; this detachable connection design allows the auxiliary topology column assembly to be disassembled or installed independently. When changing models on the production line, there is no need to adjust the tooling as a whole. Only the detachable interface needs to be operated to complete the model change, reducing the changeover time; and when the main topology column or auxiliary topology column is damaged, it can be replaced separately, and the maintenance cost is lower than that of the traditional integral structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the dual-topology B-pillar structure applied to a medium-sized van according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the dual-topology B-pillar structure applied to a light truck according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the dual-topology B-pillar structure according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the overall structure of the dual-topology B-pillar structure according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 5 This is a schematic cross-sectional view of the dual-topology B-pillar structure according to an embodiment of the present invention;

[0024] Figure 6 This is an exploded view of the overall structure of the dual-topology B-pillar structure according to an embodiment of this utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Main topology column assembly; 11. Main topology column inner panel; 12. Main reinforcing plate; 13. Main side panel outer panel; 14. Outer sealing plate; 1a. First edge-mounted component; 1b. Concave-convex component; 1c. Positioning hole;

[0027] 2. Auxiliary topology column assembly; 21. Auxiliary topology column inner panel; 22. Auxiliary reinforcing plate; 23. Auxiliary side panel outer panel; 2a. Second side panel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0030] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0031] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0032] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0033] First Embodiment

[0034] Please see Figures 1 to 6 .

[0035] This embodiment provides a modular dual-topology B-pillar structure, which is simple in structure, easy to implement, and low in cost. It solves the problems of poor switching compatibility and long production cycles inherent in existing vehicle manufacturing, which uses a single-pillar structure and struggles to meet the market's demands for rapid iteration across various vehicle scenarios. This dual-topology B-pillar structure is primarily based on a decoupling design, splitting the integrated B-pillar structure into two modular parts. This dual-topology B-pillar structure is mainly erected and fixed to the vehicle body structure. (See attached image.) Figure 1 and Figure 2 The dual-topology B-pillar structure is vertically welded onto a medium-sized van or light truck. (See attached image) Figure 3 and Figure 4 The structure includes a main topology column assembly 1 and an auxiliary topology column assembly 2 arranged side by side, wherein:

[0036] Main topology column assembly 1, see Figure 5 and Figure 6It includes a longitudinally extending and parallel main topological column inner plate 11, a main reinforcing plate 12, a main side outer plate 13, and an outer sealing plate 14; both sides of the main topological column inner plate 11, the main side outer plate 13, and the outer sealing plate 14 are configured as first abutment edges 1a, and the three are fixed together by the first abutment edges 1a; one side of the main reinforcing plate 12 is installed between the main topological column inner plate 11 and the main side outer plate 13, and the other side is installed between the main side outer plate 13 and the outer sealing plate 14 for fixation;

[0037] In this embodiment, see Figure 5 The main topological column inner plate 11, the main side outer plate 13 and the outer sealing plate 14 together form a rectangular structure, and the main reinforcing plate 12 is located inside the rectangular structure. This can effectively strengthen the structural strength of the entire main topological column assembly 1 and improve its impact resistance.

[0038] Auxiliary topology column assembly 2, see Figure 5 It includes an auxiliary topological column inner plate 21, an auxiliary reinforcing plate 22, and an auxiliary side wall outer plate 23 that extend longitudinally and are parallel to each other; both sides of the auxiliary topological column inner plate 21 and the auxiliary side wall outer plate 23 are configured as second abutment edges 2a, and the two are fixed to each other by the second abutment edge 2a on one side, and the second abutment edge 2a on the other side is fixed to the outer side wall of the main side wall outer plate 13 and the outer sealing plate 14 respectively; one side of the auxiliary reinforcing plate 22 is installed and fixed between the auxiliary topological column inner plate 21 and the auxiliary side wall outer plate 23, and the other side is installed between the main side wall outer plate 13 and the outer sealing plate 14 and is stacked and fixed with the main reinforcing plate 12, that is, the main side wall outer plate 13 and the outer sealing plate 14 sandwich the auxiliary reinforcing plate 22 (including the main reinforcing plate 12) in the middle, increasing the contact area and preventing the auxiliary topological column assembly 2 from detaching.

[0039] In this embodiment, the first edge 1a and the second edge 2a are both extended along the length of the plate. The first edge 1a of the main topological column inner plate 11, the main side outer plate 13, and the outer sealing plate 14, and the second edge 2a of the auxiliary topological column inner plate 21 and the auxiliary side outer plate 23 are all formed by side-flipping 60°-90°. The outer sealing plate 14 has only one edge with side-flipping, while the other side is set in its original flat state without edge-flipping design. The flat setting of the first edge 1a of the outer sealing plate 14 makes it easy for the first edge 1a of the main topological column inner plate 11 to be completely tightly attached to it, so as to complete the closed rectangular structure.

[0040] In this embodiment, the first contact edge 1a of the main topological column assembly 1 and the second contact edge 2a of the auxiliary topological column assembly 2 are configured as stepped flange structures for welding fixation. That is, in this embodiment, both the first contact edge 1a and the second contact edge 2a are designed with side flanges to form stepped flange structures, so that each plate can be better aligned in advance through the side flange surfaces during assembly, significantly improving structural adaptability. Moreover, this design not only increases the welding contact area of ​​each plate, reduces the risk of welding deformation, and improves the stability of welding quality, but also ensures that a certain gap is formed between each plate after fixing. This gap is conducive to the plate deformation offsetting external forces.

[0041] In this embodiment, see Figure 5 and Figure 6 The first abutment 1a, where the inner plate 11 of the main topology column is fixed to the outer sealing plate 14, is provided with mutually adaptable concave-convex components 1b and a number of corresponding positioning holes 1c. The concave-convex components 1b and the positioning holes 1c form a dual positioning system, which can achieve the initial positioning of the inner plate 11 of the main topology column and the outer sealing plate 14 during assembly, reduce the amount of manual alignment work, ensure the docking accuracy of the components, and eliminate the need for repeated adjustments. The concave-convex components 1b and the positioning holes 1c are respectively set along the length direction of the inner plate 11 of the main topology column and the outer sealing plate 14, which can effectively expand the pre-positioning area.

[0042] In this embodiment, both the main topological column assembly 1 and the auxiliary topological column assembly 2 are provided with weight-reducing holes and reinforcing ribs; that is, the main topological column inner plate 11, the main reinforcing plate 12, the main side outer plate 13, the outer sealing plate 14, the auxiliary topological column inner plate 21, the auxiliary reinforcing plate 22 and the auxiliary side outer plate 23 are provided with weight-reducing holes and reinforcing ribs, which effectively achieves the purpose of overall lightweighting while ensuring a certain structural strength.

[0043] The working principle and usage process of this utility model:

[0044] See Figure 6 The main topology column assembly 1 in the double topology B-pillar structure includes a main topology column inner plate 11, a main reinforcing plate 12, a main side outer plate 13 and an outer sealing plate 14, and the auxiliary topology column assembly 2 includes an auxiliary topology column inner plate 21, an auxiliary reinforcing plate 22 and an auxiliary side outer plate 23.

[0045] See Figure 1 and Figure 2 Depending on whether the required adaptation is for a medium-sized van with a rear cargo box or a truck with an independent cab, a dual-topology structure consisting of main topology assembly 1 and auxiliary topology assembly 2, or a single main topology assembly 1, can be selected for adaptation. The workshop production line can produce the B-pillar structure for both medium-sized vans and trucks on the same line. If adaptation for a medium-sized van is required, the following solution should be adopted:

[0046] See Figure 5 and Figure 6

[0047] First, during installation (for example), a positioning fixture can be used to position the main topology column inner plate 11, the main side outer plate 13, and the outer sealing plate 14, and the first abutting edges 1a on both sides of each plate are respectively set to correspond to each other, so that the three form a rectangular structure. The concave and convex components 1b of the main topology column inner plate 11 and the outer sealing plate 14 and each positioning hole 1c (which will be pre-positioned by means of pin insertion later) are respectively set to correspond to each other. Then, one side of the main reinforcing plate 12 is inserted between the main topology column inner plate 11 and the main side outer plate 13, and the other side is inserted between the main side outer plate 13 and the outer sealing plate 14. At this time, the surfaces of the above plates will be in close contact.

[0048] Next, the auxiliary topology column inner plate 21 and the auxiliary side wall outer plate 23 are positioned using a positioning fixture, and the second abutment edges 2a on one side of the two plates are respectively set to correspond to each other, and the second abutment edges 2a on the other side are respectively tightly attached to the outer walls of the main side wall outer plate 13 and the outer sealing plate 14; then, one side of the auxiliary reinforcing plate 22 is inserted between the auxiliary topology column inner plate 21 and the auxiliary side wall outer plate 23, and the other side is inserted between the main side wall outer plate 13 and the outer sealing plate 14 and is stacked with the main reinforcing plate 12.

[0049] Finally, the corresponding panels are welded together to ensure they are in close contact, thus completing the welding of the main topology column assembly 1 and the auxiliary topology column assembly 2 into a single, complete double-topology B-column structure. See below. Figure 1 This dual-topology B-pillar structure can be adapted to medium-sized vans. The main topology pillar assembly 1 is suitable for the cab of medium-sized vans (for seat belt installation and top support), and the auxiliary topology pillar assembly 2 is suitable for the rear compartment of medium-sized vans (for providing installation support for the sliding door).

[0050] If truck compatibility is required, the following solution should be adopted:

[0051] First, positioning fixtures are used to position the inner main topological column panel 11, the outer main side panel 13, and the outer sealing plate 14, ensuring that the first abutment edges 1a on both sides of each panel correspond to each other, forming a rectangular structure. The concave-convex components 1b and positioning holes 1c (which will be pre-positioned using pins) of the inner main topological column panel 11 and the outer sealing plate 14 correspond to each other. Then, one side of the main reinforcing plate 12 is inserted between the inner main topological column panel 11 and the outer main side panel 13, and the other side is inserted between the outer main side panel 13 and the outer sealing plate 14. At this point, the main reinforcing plate 12, the outer main side panel 13, and the outer sealing plate 14 are stacked. Finally, welding is used to fix each corresponding panel, ensuring they are tightly attached to each other, completing the independent main topological column assembly B-pillar structure. See below. Figure 2The main topology column assembly (B-pillar structure) can be adapted to trucks. The main topology column assembly 1 is suitable for the truck cab (for seat belt installation and roof support). Therefore, this utility model redesigns the traditional B-pillar structure into two independent modules: the main topology column assembly 1 and the auxiliary topology column assembly 2. The resulting dual-topology B-pillar structure can be produced on the same production line and can be adapted to different vehicle models. For example, the single main topology column assembly 1 can be adapted to trucks with a single cab, integrating side support, door lock installation, and other functions. The auxiliary topology column assembly 2, combined with the main topology column assembly 1 to form a dual-topology B-pillar structure, can also be adapted to medium-sized vans with a rear cargo box. The two parts can be switched independently or flexibly, effectively improving production flexibility and vehicle compatibility, and significantly enhancing multi-scenario vehicle adaptability.

[0052] Second Embodiment

[0053] The difference between this embodiment and the first embodiment is that the main topology column assembly 1 and the auxiliary topology column assembly 2 are no longer fixed by welding, but by detachable fixing, so that the main topology column assembly 1 or the auxiliary topology column assembly 2 can be independently disassembled for reassembly, cleaning, maintenance, etc. in the future.

[0054] In this embodiment, the second abutment edge 2a on one side of the auxiliary topology pillar inner plate 21 and the auxiliary side wall outer plate 23 are fixed to each other, and the second abutment edge 2a on the other side of both are detachably fixed to the outer wall of the main side wall outer plate 13 and the outer sealing plate 14. That is, in this embodiment, the auxiliary topology pillar assembly 2 is detachably fixed to the main topology pillar assembly 1, which is beneficial for the two independent modules to be flexibly combined and quickly switched according to different vehicle models.

[0055] During installation (for example, one method),

[0056] First, by positioning the fixture, one side of the auxiliary reinforcing plate 22 is inserted between the main side panel 13 and the outer sealing plate 14 and stacked with the main reinforcing plate 12. The auxiliary reinforcing plate 22, the main reinforcing plate 12, the main side panel 13 and the outer sealing plate 14 are detachably and fixedly connected by bolts so that each plate surface is tightly attached to each other.

[0057] Second, the second abutment edge 2a on one side of the auxiliary side panel 23 is pre-attached tightly to the outer wall of the main side panel 13, and then fixed to the outer wall of the main side panel 13 by bolts; at this time, the second abutment edge 2a on the other side of the auxiliary side panel 23 will also be tightly attached to the auxiliary reinforcing plate 22.

[0058] Third, the second abutment 2a on one side of the auxiliary topology column inner plate 21 is pre-fitted tightly to the outer wall of the outer sealing plate 14, and then fixed to the outer wall of the outer sealing plate 14 by bolts (the plate needs to be drilled with corresponding threaded holes); at this time, the second abutment 2a on the other side of the auxiliary topology column inner plate 21 will also be tightly fitted to the auxiliary reinforcement, and the auxiliary reinforcement plate 22 is located between the auxiliary side outer plate 23 and the auxiliary topology column inner plate 21. Finally, all three can be fixed by bolts, completing the detachable fixing of the auxiliary topology column assembly 2 to the main topology column assembly 1. When disassembly is required, the bolts can be loosened for quick disassembly. In other embodiments, other detachable fixing connection methods can also be used, such as riveting connection, snap-fit ​​connection or magnetic connection, etc.

[0059] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A modular dual-topology B-pillar structure, which is erected and fixed to the vehicle body structure, characterized in that: It includes a main topology column assembly and an auxiliary topology column assembly arranged side by side; wherein: The main topological column assembly includes a longitudinally extending and parallel main topological column inner plate, a main reinforcing plate, a main side outer plate, and an outer sealing plate; both sides of the main topological column inner plate, the main side outer plate, and the outer sealing plate are configured as first abutting edges, and the three are fixed together by the first abutting edges; one side of the main reinforcing plate is installed between the main topological column inner plate and the main side outer plate, and the other side is installed between the main side outer plate and the outer sealing plate for fixation; The auxiliary topology column assembly includes a longitudinally extending and parallel auxiliary topology column inner plate, an auxiliary reinforcing plate, and an auxiliary side wall outer plate; both sides of the auxiliary topology column inner plate and the auxiliary side wall outer plate are configured as second abutment edges, and the two are fixed to each other by the second abutment edge on one side, and the second abutment edge on the other side is fixed to the outer side wall of the main side wall outer plate and the outer sealing plate respectively; one side of the auxiliary reinforcing plate is installed and fixed between the auxiliary topology column inner plate and the auxiliary side wall outer plate, and the other side is installed between the main side wall outer plate and the outer sealing plate and is stacked and fixed with the main reinforcing plate.

2. The modular dual-topology B-pillar structure as described in claim 1, characterized in that: The first abutment of the main topology column assembly and the second abutment of the auxiliary topology column assembly are configured as stepped flange structures for welding and fixing.

3. The modular dual-topology B-pillar structure as described in claim 1, characterized in that: The first abutment of the inner plate of the main topology column and the outer sealing plate is respectively provided with mutually compatible concave and convex components, which are used for the precise docking of the main reinforcing plate and the outer sealing plate.

4. A modular dual-topology B-pillar structure as described in claim 3, characterized in that: The first abutment edge of the main topology column inner plate and the outer sealing plate is respectively provided with a number of corresponding positioning holes, which are used for quick positioning during welding.

5. A modular dual-topology B-pillar structure as described in claim 4, characterized in that: The concave-convex components and the positioning holes are respectively arranged along the length direction of the inner plate and the outer sealing plate of the main topology column.

6. A modular dual-topology B-pillar structure as described in claim 1, characterized in that: Both the main topological column assembly and the auxiliary topological column assembly are provided with weight-reducing holes and reinforcing rib structures.

7. A modular dual-topology B-pillar structure as described in claim 1, characterized in that: The second abutting edge on the other side of the auxiliary topological column inner plate and the auxiliary side outer plate is detachably fixed to the outer wall of the main side outer plate and the outer sealing plate.

8. A modular dual-topology B-pillar structure as described in claim 6, characterized in that: The second abutment on the other side of the auxiliary topological column inner plate and the auxiliary side outer plate is fixed to the outer wall of the main side outer plate and the outer sealing plate by bolt connection.

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