Vehicle body rear structure and vehicle

Abstract

The utility model discloses a vehicle body rear structure and a vehicle, the vehicle body rear structure comprises: a doorsill beam extending along an X direction; the C column lower inner plate is connected with the doorsill beam; the threshold reinforcing plate is connected with the C column lower inner plate in the Y direction, and a first connecting part is formed on the threshold reinforcing plate; a first connecting part is formed on the doorsill reinforcing plate, a second connecting part is formed on the rear side wall connecting plate, and the doorsill reinforcing plate and the rear side wall connecting plate are connected through the first connecting part and the second connecting part. According to the vehicle body rear structure, the C column lower inner plate extends downwards to be connected with the doorsill beam, compared with a traditional structure, the section of an inner cavity of the connecting position is larger, the rigidity and the strength of the connecting position are higher, the collision and NVH performance of a vehicle body in white is improved, the energy absorption effect is improved, and therefore the safety performance of the vehicle body rear structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a vehicle body rear structure and a vehicle. Background Art

[0002] Related technologies point out that as vehicle collision regulations become increasingly stringent, it is particularly important to optimize and improve the body structure during the development of new models to improve the body-in-white collision and NVH performance. In response to increasingly stringent collision regulations and customers' increasing demand for vehicle performance experience, existing technologies mainly have the following response solutions:

[0003] ① Improve the material grade. In order to meet the new regulations on strength and stiffness performance, the simple solution is to improve the material grade. That is, on the basis of the original solution, replace the material with a higher strength grade. However, the problems that follow are the increase in raw material and production costs, the increase in the difficulty of part molding, and the use of high-strength materials also makes it difficult to control the dimensional accuracy of parts;

[0004] ② Optimize product structure, add ribs, shapes or change the overlap relationship between parts based on the original structure to improve the vehicle's stiffness, torsion and collision assembly performance.

[0005] The existing technical solutions will cause an increase in raw material and production costs, and have limited improvements on vehicle rigidity and torsional performance, and need to be improved. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vehicle body rear structure, which has good rigidity, anti-torsion and collision performance.

[0007] The utility model also provides a vehicle with the vehicle body rear structure.

[0008] According to the first aspect of the utility model, the rear vehicle body structure includes: a sill beam, which extends along the X direction; a C-pillar lower inner plate, which is connected to the sill beam; a sill reinforcement plate, which is connected to the C-pillar lower inner plate in the Y direction, and the sill reinforcement plate is formed with a first connection portion; a rear side panel connecting plate, which is formed with a second connection portion, and the sill reinforcement plate and the rear side panel connecting plate are connected through the first connection portion and the second connection portion.

[0009] According to the rear vehicle body structure of the utility model, by extending the lower inner panel of the C-pillar downward and connecting it to the door sill beam, the inner cavity cross-section at the connecting position is larger than that of the traditional structure, and the rigidity and strength of the connecting position are higher, thereby improving the energy absorption effect, improving the collision and NVH performance of the white body, and thus improving the safety performance of the rear vehicle body structure.

[0010] In some embodiments, the first connecting portion is formed as a first flanging, the second connecting portion is formed as a second flanging, and the first flanging is attached to the second flanging.

[0011] In some embodiments, the rear body structure further includes: a middle plate of the rear side wall reinforcing plate, which is connected to the upper end of the sill reinforcing plate; an outer panel of the rear wheel housing, which is connected to the rear side wall connecting plate, and the middle plate of the rear side wall reinforcing plate is connected to the outer panel of the rear wheel housing.

[0012] In some embodiments, the rear body structure further includes: an inner panel of the rear wheel housing, both sides of the lower inner plate of the C-pillar are respectively connected to the sill reinforcing plate and the rear side wall connecting plate, the lower inner plate of the C-pillar and the sill reinforcing plate and the rear side wall connecting plate enclose a cavity, the inner panel of the rear wheel housing is formed with a third connecting portion, the lower inner plate of the C-pillar is formed with a fourth connecting portion, and the lower inner plate of the C-pillar and the inner panel of the rear wheel housing are connected through the third connecting portion and the fourth connecting portion.

[0013] In some embodiments, the third connecting portion is formed as a first connecting surface, the fourth connecting portion is formed as a second connecting surface, the first connecting surface is attached to the second connecting surface, the inner panel of the rear wheel housing is formed with a convex platform extending in the circumferential direction, the convex platform is located at the edge of the first connecting surface, and the convex platform abuts against the lower inner plate of the C-pillar.

[0014] In some embodiments, the rear body structure further includes: a middle plate of the rear wheel housing, the middle plate of the rear wheel housing is connected to the inner panel of the rear wheel housing and is spaced apart from the lower inner plate of the C-pillar in the X direction, the upper end of the middle plate of the rear wheel housing is connected with a middle plate of the inner reinforcing plate of the rear wheel housing, and the lower end of the middle plate of the rear wheel housing is connected with a rear suspension mounting plate.

[0015] In some embodiments, a fifth connecting portion is formed at the lower end of the sill reinforcing plate, a sixth connecting portion is formed on the sill beam, and the sill reinforcing plate and the sill beam are connected through the fifth connecting portion and the sixth connecting portion.

[0016] In some embodiments, the fifth connecting portion is formed as a third connecting surface, the sixth connecting portion is formed as a fourth connecting surface, the third connecting surface is attached to the fourth connecting surface and is adhesively connected through structural adhesive.

[0017] In some embodiments, the sill beam is formed as an aluminum extrusion molding.

[0018] A vehicle according to the second aspect of the present invention includes a rear body structure according to the first aspect of the present invention above.

[0019] According to the vehicle of the present utility model, by providing the vehicle rear body structure of the above first aspect, the energy absorption effect is improved, the side collision performance of the vehicle is enhanced, and the collision and NVH performance of the white body are optimized.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a vehicle rear body structure according to an embodiment of the present utility model;

[0022] Figure 2 is Figure 1 a connection schematic diagram of the vehicle rear body structure shown in ;

[0023] Figure 3 is Figure 1 another partial connection schematic diagram of the vehicle rear body structure shown in ;

[0024] Figure 4 is Figure 1 a schematic diagram of a sill beam shown in ;

[0025] Figure 5 is Figure 1 an A-A cross-sectional schematic diagram of the vehicle rear body structure shown in ;

[0026] Figure 6 is Figure 1 a B-B cross-sectional schematic diagram of the vehicle rear body structure shown in ;

[0027] Figure 7 is Figure 2 a schematic diagram of an inner wheelhouse panel shown in ;

[0028] Figure 8 is Figure 2 a connection schematic diagram of the inner wheelhouse panel and the lower inner panel of the C-pillar shown in ;

[0029] Figure 9 is Figure 3 a schematic diagram of a sill reinforcement shown in ;

[0030] Figure 10 is Figure 3 a schematic diagram of a rear quarter panel connecting plate and a sill reinforcement shown in.

[0031] Reference Signs:

[0032] 100. Rear body structure; 1. Sill beam; 2. Inner lower panel of C-pillar; 21. Fourth connection part; 3. Sill reinforcement plate; 31. First connection part; 4. Rear side panel connection plate; 41. Second connection part; 5. Middle plate of rear side panel reinforcement; 6. Outer panel of rear wheelhouse; 7. Inner panel of rear wheelhouse; 71. Third connection part; 72. Boss; 8. Middle plate of inner reinforcement of rear wheelhouse; 9. Middle plate of rear wheelhouse; 10. Rear suspension mounting plate; 101. Cavity. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0034] Refer to the following Figures 1 - 10 to describe the rear body structure 100 according to the embodiment of the first aspect of the present invention.

[0035] As Figures 1 - 10 shown, the rear body structure 100 according to the embodiment of the first aspect of the present invention includes: a sill beam 1, an inner lower panel 2 of the C-pillar, a sill reinforcement plate 3, and a rear side panel connection plate 4.

[0036] Specifically, the sill beam 1 extends along the X direction, the inner lower panel 2 of the C-pillar is connected to the sill beam 1, the sill reinforcement plate 3 is connected to the inner lower panel 2 of the C-pillar in the Y direction, the sill reinforcement plate 3 is formed with a first connection part 31, the rear side panel connection plate 4 is formed with a second connection part 41, and the sill reinforcement plate 3 and the rear side panel connection plate 4 are connected through the first connection part 31 and the second connection part 41. The overall rear body structure 100 is simple, ingeniously designed, and optimizes the connection structure between the body C-pillar assembly and the sill beam 1.

[0037] It can be understood that the sill beam 1 extends along the length direction of the vehicle and is located below the door. The sill beam 1 not only provides the basis for door installation but also plays a key role in energy absorption during a side collision of the vehicle. The C-pillar is a vertical pillar at the rear side of the vehicle and is located on both sides of the rear window. The inner lower panel 2 of the C-pillar, as a part of the C-pillar, is usually connected to the sill beam 1 to provide additional support for the rear of the body and play a role in energy transfer during a side collision. The sill reinforcement plate 3 is designed to enhance the strength of the sill beam 1 and is usually connected to the inner lower panel 2 of the C-pillar in the Y direction (i.e., the width direction of the vehicle). Such a reinforcement plate can increase the rigidity of the entire body and contribute to improving the safety performance of the vehicle. The rear side panel connection plate 4 is formed with a second connection part 41 and is connected to the first connection part 31 of the sill reinforcement plate 3 to ensure stable connection between the various components, thereby enhancing the structural strength of the entire rear body.

[0038] According to the rear body structure 100 of the embodiment of the present utility model, by extending the lower inner panel 2 of the C-pillar downward to be connected with the sill beam 1, the inner cavity cross-section at the connection position is larger than that of the traditional structure, and the stiffness and strength at the connection position are higher, improving the energy absorption effect and enhancing the collision and NVH performance of the white body, thereby improving the safety performance of the rear body structure 100.

[0039] In some embodiments of the present utility model, such as Figure 9 and Figure 10 shown, the first connecting portion 31 is formed as a first flanging, the second connecting portion 41 is formed as a second flanging, and the first flanging fits with the second flanging. That is to say, the first flanging and the second flanging ensure a firm connection between the sill reinforcement plate 3 and the rear side panel connection plate 4. After the first flanging and the second flanging fit, they can be fixedly connected by spot welding, laser welding, riveting or using an adhesive. In this way, not only the strength of the connection part is improved, the assembly process is simplified, but also the positioning is facilitated and the assembly difficulty is reduced.

[0040] In some embodiments of the present utility model, the rear body structure 100 further includes: a rear side panel reinforcement middle plate 5 and an outer wheelhouse panel 6. The rear side panel reinforcement middle plate 5 is connected to the upper end of the sill reinforcement plate 3, the outer wheelhouse panel 6 is connected to the rear side panel connection plate 4, and the rear side panel reinforcement middle plate 5 is connected to the outer wheelhouse panel 6. It can be understood that the rear side panel reinforcement middle plate 5 is located inside the rear side panel of the vehicle body, and its main function is to enhance the rigidity and stability of the rear part of the vehicle body. It is connected to the upper end of the sill reinforcement plate 3, so that forces from different directions can be better dispersed and the overall structure strength can be improved; the outer wheelhouse panel 6 is the part covering above the wheel, and its main role is to protect the vehicle body from damage by flying stones, mud and water and other substances. The outer wheelhouse panel 6 is connected to the rear side panel connection plate 4 and also to the rear side panel reinforcement middle plate 5, which can ensure that the structure around the wheel is more stable and also helps to improve the stability of the vehicle under the action of lateral force.

[0041] Furthermore, the rear side panel reinforcement middle plate 5 is connected to the upper end of the sill reinforcement plate 3 through its lower part, which helps to improve the overall rigidity of the rear part of the vehicle body and can better absorb and disperse energy when the vehicle is subjected to a side impact; the outer wheelhouse panel 6 is connected to the rear side panel connection plate 4, enhancing the structural strength of the wheel arch area; at the same time, the connection between the rear side panel reinforcement middle plate 5 and the outer wheelhouse panel 6 further enhances the stability of this area.

[0042] In some embodiments of the present utility model, the rear body structure 100 further includes: an inner wheelhouse panel 7. Both sides of the lower inner panel 2 of the C-pillar are respectively connected to the sill reinforcement plate 3 and the rear side panel connection plate 4, and the lower inner panel 2 of the C-pillar, the sill reinforcement plate 3 and the rear side panel connection plate 4 enclose a cavity 101, such as Figure 7 andFigure 8 As shown, a third connecting portion 71 is formed on the inner panel 7 of the rear wheelhouse, and a fourth connecting portion 21 is formed on the inner panel 2 of the lower C-pillar. The inner panel 2 of the lower C-pillar and the inner panel 7 of the rear wheelhouse are connected through the third connecting portion 71 and the fourth connecting portion 21. That is to say, the inner panel 7 of the rear wheelhouse is a part inside the wheel arch, which is used to protect the vehicle body from the external environment. The inner panel 2 of the lower C-pillar is located at the rear side of the vehicle body and is a part of the C-pillar, which is connected to the sill reinforcement 3 and the rear side panel connecting plate 4. By connecting the two sides of the inner panel 2 of the lower C-pillar to the sill reinforcement 3 and the rear side panel connecting plate 4 respectively, a closed cavity is formed, improving the rigidity of the rear part of the vehicle body; through the fitting connection of the third connecting portion 71 and the fourth connecting portion 21, a firm combination is achieved between the inner panel 7 of the rear wheelhouse and the inner panel 2 of the lower C-pillar, further enhancing the structural strength of the wheel arch area.

[0043] In some embodiments of the present utility model, the third connecting portion 71 is formed as a first connecting surface, the fourth connecting portion 21 is formed as a second connecting surface, the first connecting surface is in contact with the second connecting surface, and the inner panel 7 of the rear wheelhouse is formed with a boss 72 extending circumferentially. The boss 72 is located at the edge of the first connecting surface and abuts against the inner panel 2 of the lower C-pillar. It can be understood that the first connecting surface and the second connecting surface are in close contact, increasing the connecting area at the connection, ensuring the strength and stability of the connection, and the boss 72 further increases the connecting area between the inner panel 7 of the rear wheelhouse and the inner panel 2 of the lower C-pillar, thereby increasing the rigidity and stability of the connection.

[0044] In some embodiments of the present utility model, the rear part structure 100 of the vehicle body further includes: a middle panel 9 of the rear wheelhouse, the middle panel 9 of the rear wheelhouse is connected to the inner panel 7 of the rear wheelhouse and is spaced apart from the inner panel 2 of the lower C-pillar in the X direction. The upper end of the middle panel 9 of the rear wheelhouse is connected with a middle reinforcement panel 8 of the inner rear wheelhouse, and the lower end of the middle panel 9 of the rear wheelhouse is connected with a rear suspension mounting plate 10. As Figure 2 shown, the middle panel 9 of the rear wheelhouse is located between the inner panel 7 of the rear wheelhouse and the inner panel 2 of the lower C-pillar, and is spaced apart from the inner panel 2 of the lower C-pillar in the length direction of the vehicle, which helps to disperse the forces from different directions and improve the overall rigidity of the rear part of the vehicle body.

[0045] In some embodiments of the present utility model, a fifth connecting portion is formed at the lower end of the sill reinforcement 3, and a sixth connecting portion is formed on the sill beam 1. As Figure 6 shown, the sill reinforcement 3 and the sill beam 1 are connected through the fifth connecting portion and the sixth connecting portion. It can be understood that the sill reinforcement 3 can not only enhance the bending resistance of the sill beam 1, but also better disperse and absorb energy during a side collision to protect the safety of the vehicle occupants.

[0046] In some embodiments of the present utility model, the fifth connecting portion is formed as a third connecting surface, and the sixth connecting portion is formed as a fourth connecting surface. The third connecting surface and the fourth connecting surface are fitted and connected by bonding with structural adhesive. Thus, the connection area at the joint is increased, ensuring the strength and stability of the joint. Moreover, the structural adhesive can also provide an additional sealing effect to prevent moisture and other corrosive substances from entering the connection part, thereby extending the service life of the component. In addition, the structural adhesive has good anti-fatigue performance and can maintain a good connection effect during the long-term use of the vehicle.

[0047] Since aluminum extrusion molding has good lightweight, high strength, and recyclability, preferably, the sill beam 1 is formed as an aluminum extrusion molding.

[0048] Optionally, each part between the inner lower panel 2 of the C-pillar, the inner panel 7 of the rear wheel well, the rear suspension mounting plate 10, the middle panel 9 of the rear wheel well, the middle panel 8 of the inner reinforcement plate of the rear wheel well, the sill reinforcement plate 3, the rear side panel connecting plate 4, the middle panel 5 of the rear side panel reinforcement, the outer panel of the wheel well, and the sill beam 1 is composed of spot welding, bonding with structural adhesive, and riveting with rivets.

[0049] When an external force acts on the sill beam 1, the acting force is transmitted along several directions inside the vehicle, in front of the vehicle, behind the vehicle, and on the roof along the body structure. As Figure 5 shown, the internal cavity space of the sill beam 1 is large, with better energy absorption effect and good anti-collision performance. Since the sill beam 1 is connected to the sill reinforcement plate 3 and the outer panel of the wheel well through fasteners, when the force acting on the sill beam 1 is transmitted in the direction of the roof, it is first transmitted to the cavity 101 as shown in the figure and then transmitted upward. The cavity 101 plays a role in improving the force transmission performance.

[0050] The vehicle according to the second aspect embodiment of the present utility model includes the vehicle rear body structure 100 according to the first aspect embodiment of the present utility model above.

[0051] The vehicle according to the embodiment of the present utility model improves the energy absorption effect, enhances the side collision performance of the vehicle, and optimizes the collision and NVH performance of the white body by setting the vehicle rear body structure 100 of the first aspect embodiment above.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0054] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A vehicle body rear structure, characterized in that: include: A threshold beam extending along the X direction; A C-pillar lower inner plate, the C-pillar lower inner plate is connected to the door sill beam; A rocker reinforcement plate, the rocker reinforcement plate is connected to the C-pillar lower inner plate in the Y direction, and the rocker reinforcement plate is formed with a first connecting portion; A rear side panel connecting plate is formed with a second connecting portion, and the rocker reinforcement plate and the rear side panel connecting plate are connected via the first connecting portion and the second connecting portion.

2. The vehicle body rear structure according to claim 1, characterized in that: The first connection portion is formed as a first flange, the second connection portion is formed as a second flange, and the first flange is in contact with the second flange.

3. The vehicle body rear structure according to claim 1, characterized in that: Also includes: a rear side panel reinforcement middle plate, wherein the rear side panel reinforcement middle plate is connected to the upper end of the door sill reinforcement plate; A rear wheel cover outer panel, wherein the rear wheel cover outer panel is connected to the rear side panel connecting plate, and the rear side panel reinforcement plate middle plate is connected to the rear wheel cover outer panel.

4. The vehicle body rear structure according to claim 3, characterized in that: Also includes: The rear wheel housing inner panel, the two sides of the C-pillar lower inner panel are respectively connected to the rocker reinforcement plate and the rear side panel connecting plate, the C-pillar lower inner panel, the rocker reinforcement plate and the rear side panel connecting plate enclose a cavity, the rear wheel housing inner panel is formed with a third connecting portion, the C-pillar lower inner panel is formed with a fourth connecting portion, and the C-pillar lower inner panel is connected to the rear wheel housing inner panel via the third connecting portion and the fourth connecting portion.

5. The vehicle body rear structure according to claim 4, characterized in that: The third connection portion is formed as a first connection surface, the fourth connection portion is formed as a second connection surface, the first connection surface is in contact with the second connection surface, the rear wheel cover inner panel is formed with a boss extending in the circumferential direction, the boss is located at the edge of the first connection surface, and the boss is in contact with the lower inner panel of the C-pillar.

6. The vehicle body rear structure according to claim 4, characterized in that: Also includes: A rear wheel housing middle plate, the rear wheel housing middle plate is connected to the rear wheel housing inner plate and is spaced apart from the C-pillar lower inner plate in the X direction, the upper end of the rear wheel housing middle plate is connected to the rear wheel housing inner reinforcement plate middle plate, and the lower end of the rear wheel housing middle plate is connected to the rear suspension mounting plate.

7. The vehicle body rear structure according to claim 1, characterized in that: A fifth connection portion is formed at a lower end of the rocker reinforcement plate, a sixth connection portion is formed on the rocker beam, and the rocker reinforcement plate and the rocker beam are connected via the fifth connection portion and the sixth connection portion.

8. The vehicle body rear structure according to claim 7, characterized in that: The fifth connection portion is formed as a third connection surface, the sixth connection portion is formed as a fourth connection surface, and the third connection surface is in contact with the fourth connection surface and is connected by means of structural adhesive.

9. The vehicle body rear structure according to any one of claims 1 to 8, characterized in that: The sill beam is formed as an aluminium extrusion.

10. A vehicle, characterized in that: The vehicle body rear structure comprises the vehicle body rear structure as claimed in any one of claims 1 to 9.

Images