C column reinforcing structure, body in white and automobile
Through the integrated C-pillar reinforcement design, the problem of insufficient side bump performance in the rear door area of the car is solved, the side bump performance and production efficiency are improved, the cost is reduced, and safety is improved.
Patent Information
- Application Number
- CN202420458136.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The existing automotive C-pillar reinforcement design results in insufficient side impact performance in the rear door area, which is unable to effectively deal with impacts from the side, and the split reinforcement is costly and has low production efficiency.
The integrated C-pillar reinforcement is adopted, including the C-pillar inner plate, the rear wheel hub outer plate and the C-pillar reinforcement. The rear cross beam and the rear wheel hub outer plate of the car are wrapped through the first, second and third connections. Connect to form a complete support path, improving the stiffness and strength of the rear door area.
It improves the side impact performance of the rear door area of the car, reduces production costs and work-out costs, reduces the intrusion and deformation of the rear door area, improves the safety factor, and avoids excessive performance.
Smart Images
Figure CN222329831U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the automotive field, and in particular to a C-pillar reinforcement structure, a body-in-white and an automobile. Background Art
[0002] The C-pillar is the third pillar that runs through the rear crossbeam of the car's roof and the outer panel of the rear wheel hub. If the rear door of the car is a revolving door, it plays an important role in supporting the rear door. Cars generally also have C-pillar reinforcements to further improve the rigidity of the car body.
[0003] In the related art, the C-pillar reinforcement includes a first reinforcement and a second reinforcement, wherein the first reinforcement is connected to the rear cross beam of the roof of the car and the C-pillar, and the second reinforcement is connected to the outer panel of the rear wheel hub and the C-pillar. However, this design results in insufficient side impact performance in the rear door area of the car, and cannot effectively cope with impacts from the side of the car. Utility Model Content
[0004] The present application provides a C-pillar reinforcement structure, a body-in-white, and a car, which can solve the problem of insufficient side impact performance in the rear door area of the car. The technical solution of the present application is as follows:
[0005] According to the first aspect involved in the present application, a C-pillar reinforcement structure is provided, including: a C-pillar inner plate, a rear wheel hub package outer plate and a C-pillar reinforcement. The rear wheel hub package outer plate is located on one side of the C-pillar inner plate and is connected to the C-pillar inner plate. The C-pillar reinforcement is integrally formed, and includes a first connection portion, a second connection portion and a third connection portion. The first connection portion is located on a side of the C-pillar inner plate away from the rear wheel hub package outer plate, and overlaps the C-pillar inner plate. The second connection portion is connected to the first connection portion, and is located on a side of the first connection portion close to the C-pillar inner plate. The second connection portion is connected to the C-pillar inner plate and the rear wheel hub package outer plate. The third connection portion is located on a side of the first connection portion away from the second connection portion, and is connected to the first connection portion. The third connection portion is used to connect to the rear cross beam of the roof of the car.
[0006] According to the above-mentioned technical means, the C-pillar reinforcement of the present application is integrally formed, which strengthens the rigidity and strength of the rear door area of the car, thereby improving the side impact performance of the car. On the other hand, the cost of the integral reinforcement is low, and only one set of molds needs to be developed, which improves production efficiency and reduces tooling costs and production costs. On the other hand, the third connection portion on the upper part of the C-pillar reinforcement is connected to the rear cross beam of the roof, and the second connection portion on the lower part is connected to the outer panel of the rear wheel hub package and the inner panel of the C-pillar. The C-pillar reinforcement runs from the rear cross beam of the car's roof to the outer panel of the rear wheel hub package of the car, and the path supported by the C-pillar reinforcement becomes complete, which strengthens the rigidity and strength of the rear door area of the car, thereby improving the side impact performance of the rear door area of the car. When a side impact occurs, the C-pillar reinforcement structure can reduce the amount of intrusion and deformation in the rear door area, thereby improving the safety factor of the rear door area of the vehicle.
[0007] In a possible embodiment, the third connection portion includes a first lap plate and a second lap plate. One end of the first lap plate is connected to the first connection portion. One end of the second lap plate is connected to the other end of the first lap plate, and is arranged perpendicular to the first lap plate. The second lap plate is used to connect to the rear cross beam of the roof of the automobile.
[0008] According to the above technical means, the present application can realize the overlap between the third connecting part and the rear cross beam of the automobile roof, thereby improving the overall stability and safety of the C-pillar reinforcement structure.
[0009] In a possible implementation manner, the number of the third connecting parts is two, and the two second lap plates are located between the two first lap plates.
[0010] According to the above technical means, the present application can increase the connection point, further improve the stability of the connection between the C-pillar reinforcement structure and the rear cross beam of the car's roof, and improve the side impact performance of the car's rear door area.
[0011] In a possible implementation manner, a triangular window is formed on the inner panel of the C-pillar, and the second connecting portion is partially disposed around the triangular window.
[0012] According to the above technical means, the present application can further enhance the rigidity and strength of the rear door area of the automobile, and further improve the side impact performance of the rear door area of the automobile.
[0013] In a possible implementation, overlapping edges are formed on both sides of the second connection portion close to and away from the triangular window; the two overlapping edges are welded to the inner plate of the C-pillar and the outer plate of the rear wheel hub package.
[0014] According to the above technical means, the present application can further improve the stability of the connection between the C-pillar reinforcement structure and the C-pillar inner panel and the rear wheel hub outer panel, thereby improving the side impact performance of the rear door area of the car.
[0015] In some possible implementations, a weight-reducing hole is formed in the second connection portion, and the weight-reducing hole is located on a side of the triangular window away from the first connection portion.
[0016] According to the above technical means, the present application can reduce the occurrence of excess performance of the C-pillar reinforcement, make the overall performance of the C-pillar reinforcement appropriate, and facilitate daily management and maintenance.
[0017] In some possible implementations, the lightening hole includes a plurality of hole segments, the plurality of hole segments are sequentially arranged along the depth direction of the lightening hole, and radial dimensions of the plurality of hole segments sequentially increase or decrease along the depth direction of the lightening hole.
[0018] According to the above technical means, the present application can both reduce the weight of the C-pillar reinforcement and ensure the structural strength of the C-pillar reinforcement.
[0019] In some possible implementations, there are multiple weight-reducing holes, and the multiple weight-reducing holes are spaced apart in a direction from the first connection portion to the third connection portion.
[0020] According to the above technical means, the present application can better reduce the weight of the C-pillar reinforcement and provide more freedom for the design of the C-pillar reinforcement.
[0021] According to a second aspect provided by the present application, a body-in-white is provided, comprising any one of the above-mentioned C-pillar reinforcement structures.
[0022] According to a third aspect provided by the present application, there is provided an automobile comprising any one of the above-mentioned body-in-white.
[0023] Therefore, the above technical features of the present application have the following beneficial effects:
[0024] (1) The support path of the C-pillar reinforcement can be made complete, thereby enhancing the rigidity and strength of the rear door area of the vehicle, thereby improving the side impact performance of the vehicle.
[0025] (2) The production efficiency of the C-pillar reinforcement can be improved, and tooling costs and production costs can be reduced.
[0026] (3) It can improve the side impact performance of the rear door area of the vehicle, reduce the intrusion and deformation of the rear door area, and thus improve the safety factor of the rear door area of the vehicle.
[0027] (4) It can reduce the occurrence of excessive performance of the C-pillar reinforcement, make the overall performance of the C-pillar reinforcement appropriate, and facilitate daily management and maintenance.
[0028] (5) The weight of the C-pillar reinforcement can be reduced while ensuring the structural strength of the C-pillar reinforcement.
[0029] It should be noted that the technical effects brought about by the second and third aspects can refer to the technical effects brought about by the corresponding implementation methods in the first aspect, and will not be repeated here.
[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.
[0032] Figure 1 It is a structural schematic diagram of a C-pillar structure in the related art;
[0033] Figure 2is a structural schematic diagram of a C-pillar reinforcement structure according to an exemplary embodiment;
[0034] Figure 3 is a schematic structural diagram of a C-pillar reinforcement according to an exemplary embodiment;
[0035] Figure 4 is a top view of a C-pillar reinforcement according to an exemplary embodiment.
[0036] Reference numerals
[0037] 0100-C-pillar structure; 01-C-pillar; 02-reinforcement; 021-first reinforcement; 022-second reinforcement; 100-C-pillar reinforcement structure; 1-C-pillar inner panel; 11-triangular window; 2-rear wheel hub outer panel; 3-C-pillar reinforcement; 31-first connecting part; 32-second connecting part; 321-weight reduction hole; 322-overlap edge; 33-third connecting part; 34-mounting hole. DETAILED DESCRIPTION
[0038] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.
[0040] With the improvement of people's living standards, cars are used more and more frequently in people's daily lives and have gradually become one of the important means of transportation for people. At the same time, as people's requirements for cars are getting higher and higher, the automobile industry is developing rapidly. Automobile manufacturers not only need to consider the high-end performance of the car itself, but also need to pay attention to the safety of the car.
[0041] The embodiment of the present application provides a car, which may include an engine, a chassis, and a body in white. It is understandable that the car may be a fuel car, an electric car, a hybrid car, a gas car, a methanol car, a solar car, etc., and the specific type of the car is not specifically limited here.
[0042] Among them, the engine is the power device of the car, which can provide power for the car to move on the ground.
[0043] The chassis can be used to install the engine and other components and assemblies of the car to form the overall shape of the car, and receive the power of the engine to make the car move and ensure normal driving.
[0044] The body in white can be mounted on the chassis, and a cabin is formed inside, which can be used for the driver, passengers or cargo. It should be noted that when the vehicle is a bus or a sedan, its body is generally an integral structure. When the vehicle is a truck, its body in white is generally composed of a cab and a cargo box.
[0045] In addition, in order to further improve the safety factor of the rear door area of the vehicle, the body-in-white of the automobile provided in the embodiment of the present application may include a C-pillar reinforcement structure.
[0046] See also Figure 1 , Figure 1 It is a structural schematic diagram of a C-pillar structure 0100 in the related art. The C-pillar structure 0100 includes a C-pillar 01 and a reinforcement 02. The automobile C-pillar 01 is the third pillar that runs through the rear cross beam of the automobile roof (not shown in the figure) and the outer panel of the automobile rear wheel hub package (not shown in the figure). If the rear door of the automobile is a revolving door, it plays an important role in supporting the rear door.
[0047] In the related art, the reinforcement 02 includes a first reinforcement 021 and a second reinforcement 022. The first reinforcement 021 is connected to the rear cross beam of the roof and the C-pillar of the car, and the second reinforcement 022 is connected to the rear wheel hub outer panel and the C-pillar 01. The reinforcement 02 is used to further improve the rigidity and torsional resistance of the rear door area of the car.
[0048] However, since the reinforcement 02 is a split reinforcement, the path supported by the reinforcement 02 is incomplete. On the other hand, there is no reinforcement in the middle of the rear cross beam of the top cover to the outer panel of the rear wheel hub. When a side collision occurs, the side collision performance of the car is insufficient, the intrusion and deformation of the rear door area are large, and the safety factor of the rear door area of the car is insufficient.
[0049] On the other hand, the split reinforcement in the related art is relatively expensive, requiring the development of two sets of molds, and resulting in high tooling and production costs.
[0050] Based on this, an embodiment of the present application provides a C-pillar reinforcement structure.
[0051] For ease of understanding, the C-pillar reinforcement structure provided in the embodiment of the present application is specifically introduced below with reference to the accompanying drawings.
[0052] Figure 2is a schematic structural diagram of a C-pillar reinforcement structure 100 according to an exemplary embodiment. Figure 2 As shown, the C-pillar reinforcement structure 100 may include a C-pillar inner panel 1 , a rear wheel hub package outer panel 2 and a C-pillar reinforcement 3 .
[0053] The C-pillar inner panel 1 is used to support the rear door. The C-pillar inner panel 1 can increase the overall rigidity and torsional resistance of the vehicle body and improve the side impact performance of the rear door area of the vehicle.
[0054] The rear wheel hub package outer panel 2 is located on one side of the C-pillar inner panel 1 and is connected to the C-pillar inner panel 1, thereby increasing the strength of the rear door area of the vehicle.
[0055] The C-pillar reinforcement 3 is formed in one piece. On the one hand, it strengthens the rigidity and strength of the rear door area of the car, thereby improving the side collision performance of the car. When a side collision occurs, the deformation of the door frame in the rear door area of the car is reduced, and the abnormal noise, abnormal wear of parts and other faults are reduced, thereby improving the comfort of passengers in the vehicle.
[0056] On the other hand, the cost of integral reinforcement is lower, and only one set of molds needs to be developed, which improves production efficiency and reduces tooling costs and production costs.
[0057] The upper part of the C-pillar reinforcement 3 is connected to the rear cross beam of the roof, and the lower part is connected to the rear wheel hub outer panel 2. The C-pillar reinforcement 3 runs from the rear cross beam of the automobile roof to the rear wheel hub outer panel 2 of the automobile, thereby enhancing the rigidity and strength of the rear door area of the automobile, thereby improving the side collision performance of the rear door area of the automobile. When a side collision occurs, the C-pillar reinforcement structure 100 can reduce the intrusion and deformation of the rear door area, thereby improving the safety factor of the rear door area of the vehicle.
[0058] See also Figure 3 , Figure 3 1 is a schematic structural diagram of a C-pillar reinforcement 3 according to an exemplary embodiment. The C-pillar reinforcement 3 includes a first connection portion 31 , a second connection portion 32 and a third connection portion 33 .
[0059] The first connection portion 31 is located at a side of the C-pillar inner plate 1 away from the rear wheel hub package outer plate 2 , and overlaps the C-pillar inner plate 1 .
[0060] The second connection portion 32 is connected to the first connection portion 31 and is located on a side of the first connection portion 31 close to the C-pillar inner panel 1 . The second connection portion 32 is connected to the C-pillar inner panel 1 and the rear wheel hub package outer panel 2 .
[0061] See also Figure 4 , Figure 41 is a top view of a C-pillar reinforcement 3 according to an exemplary embodiment. The third connection portion 33 is located on a side of the first connection portion 31 away from the second connection portion 32, connected to the first connection portion 31, and is used to connect to a rear cross beam of a roof of a car (not shown in the figure).
[0062] In some embodiments, see Figure 2 The C-pillar inner panel 1 is formed with a triangular window 11 , and the second connecting portion 32 is partially disposed around the triangular window 11 .
[0063] In this way, the third connection part 33 of the upper part of the C-pillar reinforcement 3 is connected to the rear cross beam of the roof, and the second connection part 32 of the lower part is connected to the rear wheel hub package outer plate 2. The C-pillar reinforcement 3 extends from the rear cross beam of the automobile roof to the triangular window 11, bypasses the triangular window 11 and finally extends to the rear wheel hub package outer plate 2 of the automobile. The rigidity and strength of the rear door area of the automobile are further enhanced, and the side collision performance of the rear door area of the automobile is further improved.
[0064] It should be noted that the embodiment of the present application does not limit the material selection of the C-pillar reinforcement 3, and the material selection can be made according to actual conditions.
[0065] For example, the material of the C-pillar reinforcement 3 may include CA340 / 590DP, with a thickness of 1.0 mm.
[0066] Since CA340 / 590DP has high tensile strength and yield strength, using CA340 / 590DP as the material for the C-pillar reinforcement 3 can effectively improve the rigidity and torsional resistance of the vehicle body structure, thereby enhancing the rigidity and strength of the rear door area of the vehicle and further improving the side impact performance of the vehicle.
[0067] In some embodiments, the third connection portion 33 may include a first lap plate (not shown in the figure) and a second lap plate (not shown in the figure). One end of the first lap plate is connected to the first connection portion 31. One end of the second lap plate is connected to the other end of the first lap plate, and is arranged perpendicular to the first lap plate. The second lap plate is connected to the rear cross beam of the roof of the automobile.
[0068] By providing the first lap plate and the second lap plate, the third connection portion can be overlapped with the rear cross beam of the automobile roof, thereby improving the overall stability and safety of the C-pillar reinforcement structure 100.
[0069] It should be noted that the embodiment of the present application does not limit the number of the third connection parts 33, and the number can be selected according to actual conditions.
[0070] In some embodiments, see Figure 3, the number of the third connecting parts 33 is two. The two second lap plates are located between the two first lap plates. It can be understood that the second lap plate of the first third connecting part 33 is located on the side of the first lap plate of the first third connecting part 33 close to the second third connecting part 33, and the second lap plate of the second third connecting part 33 is located on the side of the first lap plate of the second third connecting part 33 close to the first third connecting part 33.
[0071] By providing two third connecting parts 33, the two second lap plates are overlapped with the rear cross beam of the roof, and the connection position is increased, which can further improve the stability of the connection between the C-pillar reinforcement structure 100 and the rear cross beam of the roof of the car, thereby improving the side impact performance of the rear door area of the car.
[0072] It should be noted that the embodiment of the present application does not limit the connection method between the second lap plate and the rear cross beam of the roof of the automobile, and the specific connection method can be selected according to actual conditions.
[0073] Exemplarily, the second lap plate and the rear cross member of the roof of the automobile may be connected by spot welding.
[0074] Spot welding can accurately control the position and size of the welding spot, thereby improving the stability of the connection position between the second lap plate and the rear cross beam of the car's roof.
[0075] Exemplarily, the second lap plate and the rear cross member of the roof of the automobile may be fastened and connected by screws.
[0076] The second lap plate and the rear cross beam of the automobile roof can be firmly connected by fastening with screws, thereby improving the stability of the connection position between the second lap plate and the rear cross beam of the automobile roof.
[0077] In some embodiments, see Figure 2 and Figure 3 The second connection portion 32 defines a weight-reducing hole 321 , and the weight-reducing hole 321 is located on a side of the triangular window 11 away from the first connection portion 31 .
[0078] The weight-reducing holes 321 can reduce the weight of the C-pillar reinforcement 3 , thereby reducing the occurrence of excess performance, making the overall performance of the C-pillar reinforcement 3 appropriate and facilitating daily management and maintenance.
[0079] It should be noted that the embodiment of the present application does not limit the type of the weight-reducing holes 321 , and the type can be selected according to actual conditions.
[0080] In some embodiments, the weight-reducing hole 321 includes a plurality of hole segments, and the plurality of hole segments are sequentially arranged along the depth direction of the weight-reducing hole 321, and the radial dimensions of the plurality of hole segments sequentially increase or decrease along the depth direction of the weight-reducing hole 321. The weight-reducing hole 321 changes in a stepwise manner along the depth direction, which can reduce the weight of the C-pillar reinforcement 3 and ensure the structural strength of the C-pillar reinforcement 3.
[0081] In some embodiments, the lightening hole 321 is a circular hole.
[0082] In some embodiments, the lightening holes 321 are square holes.
[0083] It should be noted that the embodiment of the present application does not limit the number of weight-reducing holes 321 , and the number can be selected according to actual conditions.
[0084] In some embodiments, there are multiple weight-reducing holes 321, and the multiple weight-reducing holes 321 are spaced apart in a direction from the first connection portion 31 away from the third connection portion 33. The multiple weight-reducing holes 321 can better reduce the weight of the C-pillar reinforcement 3 and provide more freedom for the design of the C-pillar reinforcement 3.
[0085] For example, see Figure 2 , the number of the weight-reducing holes 321 is four.
[0086] In some embodiments, see Figure 3 The C-pillar reinforcement 3 is also formed with a plurality of mounting holes 34 , through which the C-pillar reinforcement 3 can be mounted on the C-pillar inner panel 1 and the rear door area of the vehicle.
[0087] Exemplarily, the installation of the C-pillar reinforcement 3, the C-pillar inner panel 1 and the rear door area of the vehicle can be achieved by threading bolts in the mounting holes 34. The threaded connection can enhance the stability of the connection between the C-pillar reinforcement 3, the C-pillar inner panel 1 and the rear door area of the vehicle.
[0088] In some embodiments, see Figure 3 The second connecting portion 32 is formed with overlapping edges 322 on both sides close to and away from the triangular window 11. The overlapping edges 322 can realize the overlapping of the second connecting portion 32 with the triangular window 11 and the rear wheel hub package outer plate 2.
[0089] In this way, the overlapping edge 322 further improves the stability of the connection between the C-pillar reinforcement structure 100 and the C-pillar inner panel 1 and the rear wheel hub package outer panel 2, thereby improving the side impact performance of the rear door area of the vehicle.
[0090] It should be noted that the embodiment of the present application does not limit the connection method between the overlapping edge 322 and the C-pillar inner panel 1 and the rear wheel hub package outer panel 2, and the specific connection method can be selected according to actual conditions.
[0091] Exemplarily, the two overlapping edges 322 are welded to the C-pillar inner panel and the rear wheel hub package outer panel 2 .
[0092] Spot welding can accurately control the position and size of the welding spot, thereby improving the stability of the connection position between the overlapping edge 322 and the triangular window 11 and the rear wheel hub package outer plate 2.
[0093] Exemplarily, the overlapping edge 322 and the triangular window 11 and the rear wheel hub package outer plate 2 may also be fastened together by screws.
[0094] The connection can be secured by screw fastening, thereby improving the stability of the connection position between the overlap edge 322 and the triangular window 11 and the outer plate of the rear hub package.
[0095] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A C-pillar reinforcement structure (100), characterized in that: include: C-pillar inner panel (1); A rear wheel hub outer plate (2) is located on one side of the C-pillar inner plate (1) and is connected to the C-pillar inner plate (1); A C-pillar reinforcement (3), wherein the C-pillar reinforcement (3) is formed in one piece and comprises: A first connecting portion (31) is located on a side of the C-pillar inner plate (1) away from the rear wheel hub package outer plate (2) and overlaps the C-pillar inner plate (1); a second connection portion (32) connected to the first connection portion (31) and located on a side of the first connection portion (31) close to the C-pillar inner plate (1); the second connection portion (32) is connected to the C-pillar inner plate (1) and the rear wheel hub outer plate (2); and, The third connection part (33) is located on a side of the first connection part (31) away from the second connection part (32) and is connected to the first connection part (31). The third connection part (33) is used to be connected to a rear cross beam of a roof of a car.
2. The C-pillar reinforcement structure (100) according to claim 1, characterized in that: The third connecting portion (33) comprises: a first lap plate, one end of which is connected to the first connecting portion (31); and One end of the second lap plate is connected to the other end of the first lap plate, and the second lap plate is vertically arranged with the first lap plate; the second lap plate is used to connect with the rear cross beam of the top cover.
3. The C-pillar reinforcement structure (100) according to claim 2, characterized in that: The number of the third connecting parts (33) is two; the two second lap plates are located between the two first lap plates.
4. The C-pillar reinforcement structure (100) according to claim 1, characterized in that: The C-pillar inner plate (1) is formed with a triangular window (11); the second connecting portion (32) is partially arranged around the triangular window (11).
5. The C-pillar reinforcement structure (100) according to claim 4, characterized in that: The second connecting portion (32) is formed with overlapping edges (322) on both sides close to and away from the triangular window (11); the two overlapping edges (322) are welded to the C-pillar inner plate (1) and the rear wheel hub outer plate (2).
6. The C-pillar reinforcement structure (100) according to claim 4, characterized in that: The second connecting portion (32) is provided with a weight-reducing hole (321), and the weight-reducing hole (321) is located on a side of the triangular window (11) away from the first connecting portion (31).
7. The C-pillar reinforcement structure (100) according to claim 6, characterized in that: The lightening hole (321) comprises a plurality of hole segments, the plurality of hole segments are sequentially arranged along the depth direction of the lightening hole (321), and radial dimensions of the plurality of hole segments sequentially increase or decrease along the depth direction of the lightening hole (321).
8. The C-pillar reinforcement structure (100) according to claim 6, characterized in that: The number of the weight-reducing holes (321) is plural, and the plural weight-reducing holes (321) are arranged at intervals along a direction in which the first connection portion (31) is away from the third connection portion (33).
9. A body in white, characterized in that: The invention comprises the C-pillar reinforcement structure (100) according to any one of claims 1 to 8.
10. An automobile, characterized in that: The invention comprises the body in white as claimed in claim 9.