Vehicle body rear structure for a vehicle and vehicle

Abstract

The application relates to a vehicle body rear structure for a vehicle and the vehicle, the vehicle body rear structure for the vehicle comprising a side wall inner plate vertically arranged and comprising an upper wall plate and a rear wheel cover connected in sequence from top to bottom; a C-ring assembly connected to the inner wall surface of the side wall inner plate, the C-ring assembly being Y-shaped and comprising a vertically arranged lower reinforcing arm and a front reinforcing arm and a rear reinforcing arm arranged in sequence from front to back, the front reinforcing arm and the rear reinforcing arm both at least partially covering the inner wall surface of the upper wall plate, the upper ends of the lower reinforcing arm being respectively overlapped with the front reinforcing arm and the rear reinforcing arm, at least part of the lower reinforcing arm covering the inner wall surface of the rear wheel cover, and the front reinforcing arm, the rear reinforcing arm and the lower reinforcing arm all defining a cavity with the inner wall surface of the side wall inner plate. In this way, the front reinforcing arm and the rear reinforcing arm do not occupy the space on the inner side of the rear wheel cover, the vehicle body rear structure occupies less space in the vehicle interior, and the demand of the user for a large space in the trunk is better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the automobile technical field, and particularly relates to a rear body structure of a vehicle and the vehicle. BACKGROUND

[0002] At present, when the automobile is running on the road, the tire receives the excitation from the different road surface, and the excitation of the road surface is transmitted to the automobile body through the automobile suspension, thereby causing the vibration of the automobile body. If the strength of the automobile body frame structure is weak, the vibration of the automobile body sheet metal is further intensified, and the sound cavity in the automobile is compressed, thereby causing the noise problem in the automobile.

[0003] In the prior art, the rear structure of the automobile body frame has the problems of unreasonable force transmission path and insufficient structural rigidity and strength. At present, in order to improve the rigidity of the automobile body, a herringbone C ring is usually arranged on the inner panel of the side wall, at this time, the two reinforcing arms of the C ring are located on the inner wall surface of the rear wheel cover, so that the space in the automobile is sacrificed, thereby causing the insufficient space in the automobile. SUMMARY

[0004] Therefore, it is necessary to provide a rear body structure of a vehicle which can improve the rigidity of the automobile body while saving the space in the automobile.

[0005] The present application provides a rear body structure of a vehicle, which comprises a side wall inner panel arranged vertically, the side wall inner panel comprising an upper wall plate and a rear wheel cover connected in sequence from top to bottom; and a C ring assembly connected to the inner wall surface of the side wall inner panel, the C ring assembly being in Y shape and comprising a lower reinforcing arm arranged vertically and a front reinforcing arm and a rear reinforcing arm arranged in sequence from front to back, the front reinforcing arm and the rear reinforcing arm being at least partially covered on the inner wall surface of the upper wall plate, the upper end of the lower reinforcing arm being overlapped with the front reinforcing arm and the rear reinforcing arm respectively, and at least part of the lower reinforcing arm being covered on the inner wall surface of the rear wheel cover, the front reinforcing arm, the rear reinforcing arm and the lower reinforcing arm forming a cavity with the inner wall surface of the side wall inner panel.

[0006] In one of the embodiments, the rear wheel cover is convex inward along the thickness direction of the wall, and the overlapping part of the lower reinforcing arm, the front reinforcing arm and the rear reinforcing arm is covered on the top of the rear wheel cover.

[0007] In one of the embodiments, the front reinforcing arm is arranged vertically and comprises a first support, a second support and a third support, the third support comprising a horizontal plate part covered on the top of the rear wheel cover, the first support and the second support being connected in sequence from top to bottom, and the lower region of the second support being connected with the third support.

[0008] In one embodiment, the rear reinforcing arm includes an upper bracket and a lower bracket connected sequentially from top to bottom. At least a portion of the lower region of the lower bracket covers the connection between the transverse plate and the rear wheel arch. The third bracket is provided with a mounting plate for mounting a shock absorber at a position below the transverse plate. The mounting plate is connected to the third bracket, and a cavity is formed between the third bracket, the mounting plate, and the upper wall panel of the inner side panel.

[0009] In one embodiment, the top of the lower reinforcing arm includes a bent portion covering the transverse plate portion, the lower region of the lower bracket has a first side portion covering the transverse plate portion and the second bracket and a second side portion covering the inner wall surface of the rear wheel arch, the C-ring assembly further includes a side reinforcing plate, the side reinforcing plate having a longitudinal section that is substantially inverted L-shaped and includes a top plate and a side plate, the top plate covering the bent portion and the first side portion, and the second side portion and a portion of the lower reinforcing arm located between the inner wall surface of the rear wheel arch and the side plate.

[0010] In one embodiment, both the lower reinforcing arm and the rear reinforcing arm gradually tilt forward from top to bottom.

[0011] In one embodiment, an outer reinforcing frame is provided on the outer wall surface of the rear wheel arch at a position corresponding to the lower reinforcing arm. The outer reinforcing frame extends along the length direction of the lower reinforcing arm, and a first space is defined between the outer reinforcing frame and the outer wall surface of the rear wheel arch.

[0012] In one embodiment, the outer wall surface of the upper wall panel is provided with a reinforcing component at a position corresponding to the front reinforcing arm. The reinforcing component extends along the length direction of the front reinforcing arm and defines a second space with the outer wall surface of the upper wall panel.

[0013] In one embodiment, both the inner wall of the second bracket and the inner wall of the third bracket are provided with reinforcing ribs extending along the length direction of the front reinforcing arm. When the second bracket is in the state of overlapping the third bracket, the reinforcing ribs of the second bracket are connected to the reinforcing ribs of the third bracket.

[0014] In one embodiment, a connecting shell is installed on the inner wall surface of the rear wheel arch, the connecting shell being at least partially located in front of the lower reinforcing arm, and the connecting shell and the inner wall surface of the rear wheel arch defining a third space, the connecting shell having mounting holes for mounting a seat.

[0015] In one embodiment, the front edge of the rear wheel arch is used to connect to the rear frame of the rear door frame of the vehicle body. The connecting shell includes a front shell and a rear shell connected sequentially from front to back. The front edge of the front shell overlaps the inner wall surface of the rear frame, and the rear edge of the rear shell is located between the inner wall surface of the rear wheel arch and the lower reinforcing arm. The mounting hole is located on the rear shell.

[0016] In one embodiment, a D-ring is also included, comprising two D-pillars spaced apart along the left-right direction of the vehicle body and an upper crossbeam and a rear crossbeam arranged sequentially from top to bottom. Both the upper crossbeam and the rear crossbeam extend along the left-right direction of the vehicle body. The upper end of the D-pillar is connected to the corresponding end of the upper crossbeam via a connector, and the lower end of the D-pillar is connected to the corresponding end of the rear crossbeam. The upper end of the front reinforcing arm is connected to the corresponding connector, and the upper end of the rear reinforcing arm is connected to the corresponding D-pillar.

[0017] In one embodiment, the system further includes a frame located below the upper wall panel. The frame includes two rear longitudinal beams spaced apart along the left-right direction of the vehicle body and a lower crossbeam located between the two rear longitudinal beams. The rear longitudinal beams extend along the front-rear direction of the vehicle body, and the sides of the rear longitudinal beams extending along the front-rear direction of the vehicle body are connected to the inner wall of the rear wheel arch. The rear ends of the rear longitudinal beams are connected to the rear crossbeam. The lower crossbeam extends along the left-right direction of the vehicle body, and the left and right ends of the lower crossbeam are respectively connected to the rear longitudinal beams on the corresponding sides. The lower end of the lower reinforcing arm rests on the rear longitudinal beams and is connected to the lower crossbeam.

[0018] This application also provides a vehicle, the vehicle including the rear body structure of any of the above embodiments, the rear body structure having two side inner panels, each side inner panel corresponding to one of the C-ring components.

[0019] Compared with the prior art, the C-ring assembly in the rear structure of the vehicle body provided in this application adopts a Y-shape. The Y-shaped C-ring assembly improves the bending resistance and strength of the inner side panel in the left and right directions. The front reinforcing arm and the rear reinforcing arm are at least partially located on the upper panel, while the lower reinforcing arm is located on the inner wall of the rear wheel arch. At this time, the front reinforcing arm and the rear reinforcing arm do not occupy the space inside the rear wheel arch, which reduces the occupation of the rear structure of the vehicle body on the interior space of the vehicle, thereby increasing the interior space and better meeting the user's demand for a large space in the trunk. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the rear structure of a vehicle body according to an embodiment of this application;

[0022] Figure 2 for Figure 1 A magnified view of a portion of the rear structure of the vehicle body at point A;

[0023] Figure 3 This is a perspective view of a portion of the rear structure of a vehicle body according to an embodiment of this application;

[0024] Figure 4 for Figure 3 A magnified view of a portion of the rear structure of the vehicle body at point B;

[0025] Figure 5 for Figure 1 A perspective view of a portion of the rear structure of the vehicle body is shown.

[0026] Figure 6 for Figure 1 The diagram shows the structure after the inner side panel and the rear longitudinal beam are connected.

[0027] Figure 7 for Figure 1 The diagram shows the assembly structure of the C-ring assembly, mounting plate, outer reinforcement frame, and reinforcement components in the rear structure of the vehicle body.

[0028] Reference numerals: 1. Side inner panel; 11. Upper wall panel; 12. Rear wheel arch; 2. C-ring assembly; 21. Front reinforcing arm; 211. First bracket; 212. Second bracket; 213. Third bracket; 2131. Horizontal plate; 2132. Cavity; 2133. Flange; 214. Reinforcing rib; 22. Rear reinforcing arm; 221. Upper bracket; 222. Lower bracket; 2221. First side; 2222. Second side; 23. Lower reinforcing arm; 231. Vertical bracket; 2311. Bending part; 232. Connecting frame; 24. Side 241. Reinforcing plate; 242. Top plate; 243. Side plate; 25. Outer reinforcing frame; 26. Reinforcing assembly; 261. First reinforcing frame; 262. Second reinforcing frame; 27. Connecting shell; 271. Front shell; 272. Rear shell; 2721. Boss; 2722. Mounting hole; 3. D-ring; 31. D-post; 32. Upper crossbeam; 33. Rear crossbeam; 34. Connector; 4. Frame; 41. Rear longitudinal beam; 411. First longitudinal beam section; 412. Second longitudinal beam section; 42. Lower crossbeam; 5. Mounting plate; 51. Protruding edge; 6. Rear frame. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0034] See Figures 1 to 7 This application provides a rear body structure for a vehicle. The rear body structure includes an inner side panel 1, a C-ring assembly 2, a D-ring 3, and a frame 4. Wherein, as... Figure 1 , Figure 3 and Figure 6 As shown, the inner side panel 1 is arranged vertically, and the inner side panel 1 includes an upper wall panel 11 and a rear wheel cover 12 connected sequentially from top to bottom. The upper wall panel 11 and the rear wheel cover 12 can be integrally formed, or the upper wall panel 11 and the rear wheel cover 12 can be fixed together by a fixed structure or fixing method.

[0035] In this application, the left-right direction (y) of the vehicle body represents the width of the vehicle body, corresponding to the y-direction in the coordinate system. The front-back direction (x) of the vehicle body represents the length of the vehicle body, corresponding to the x-direction in the coordinate system. The vertical direction (z) of the vehicle body represents the height of the vehicle body, corresponding to the z-direction in the coordinate system.

[0036] like Figure 1 , Figure 3 and Figure 5 As shown, the D-ring 3 includes two D-posts 31 arranged at intervals along the left-right direction y, and an upper crossbeam 32 and a rear crossbeam 33 arranged sequentially from top to bottom. Both the upper crossbeam 32 and the rear crossbeam 33 extend along the left-right direction y. The upper end of the D-post 31 is connected to the corresponding end of the upper crossbeam 32 through a connector 34, and the lower end of the D-post 31 is connected to the corresponding end of the rear crossbeam 33.

[0037] In one embodiment, the D-pillar 31 gradually slopes backward from top to bottom. In another embodiment, a portion of the D-pillar 31 slopes backward from top to bottom.

[0038] like Figure 1 , Figure 3 and Figure 5 As shown, the frame 4 is located below the upper wall panel 11, and the frame 4 includes two rear longitudinal beams 41 arranged at intervals along the left-right direction y, and a lower crossbeam 42 located between the two rear longitudinal beams 41. The rear longitudinal beams 41 extend along the front-rear direction x, and the side of the rear longitudinal beams 41 extending along the front-rear direction x is connected to the inner wall surface of the rear wheel arch 12, and the rear end of the rear longitudinal beams 41 is connected to the rear crossbeam 33. The lower crossbeam 42 extends along the left-right direction y, and the left and right ends of the lower crossbeam 42 are respectively connected to the rear longitudinal beams 41 on the corresponding sides.

[0039] In one embodiment, the rear longitudinal beam 41 is a one-piece molded part. In another embodiment, as... Figure 6 As shown, the rear longitudinal beam 41 includes a first longitudinal beam segment 411 and a second longitudinal beam segment 412 connected sequentially from front to back.

[0040] like Figure 1 and Figure 5 As shown, there are two sets of the aforementioned inner side panel 1 and C-ring assembly 2, arranged at intervals along the left-right direction y of the vehicle frame. The C-ring assembly 2 is connected to the inner wall surface of the inner side panel 1, so the two C-ring assemblies 2 are located between the two inner side panels 1. The structure, arrangement, and connection method of the inner side panel 1 and C-ring assembly 2 in each set are the same. The following description uses one set as an example.

[0041] In one implementation, such as Figures 1 to 4 As shown, the C-ring assembly 2 is Y-shaped and includes a vertically arranged lower reinforcing arm 23 and a front reinforcing arm 21 and a rear reinforcing arm 22 arranged sequentially from front to back. Both the front reinforcing arm 21 and the rear reinforcing arm 22 at least partially cover the inner wall surface of the upper wall panel 11. In one embodiment, as... Figure 2 As shown, the front reinforcing arm 21 is arranged vertically, and its upper end is connected to the connector 34 on the corresponding side. The rear reinforcing arm 22 gradually tilts forward from top to bottom, and its upper end is connected to the D-pillar 31 on the corresponding side. At this time, the length direction of the front reinforcing arm 21 and the length direction of the rear reinforcing arm 22 form an angle with each other.

[0042] It should be noted that "vertical arrangement" includes, but is not limited to, vertical alignment; it may also include tilting, as long as the overall orientation is vertical. "Y-shaped" means it resembles a standard "Y" shape. For example, in other embodiments, the length direction of the front reinforcing arm 21 is parallel to the length direction of the rear reinforcing arm 22, and the lower ends of the front reinforcing arm 21 and the rear reinforcing arm 22 are connected together by a connecting component, with the lower reinforcing arm 23 connected to the connecting component. Another example is that the rear reinforcing arm 22 is arranged vertically, while the front reinforcing arm 21 gradually tilts backward from top to bottom.

[0043] In another embodiment, both the front reinforcing arm 21 and the rear reinforcing arm 22 are arranged at an angle, such as the front reinforcing arm 21 gradually tilting backward from top to bottom, and the rear reinforcing arm 22 gradually tilting forward from top to bottom, etc.

[0044] like Figures 2 to 4 As shown, the upper end of the lower reinforcing arm 23 overlaps with the front reinforcing arm 21 and the rear reinforcing arm 22, respectively, and at least a portion of the lower reinforcing arm 23 covers the inner wall surface of the rear wheel arch 12. In one embodiment, the upper end of the lower reinforcing arm 23 overlaps with the lower ends of the front reinforcing arm 21 and the rear reinforcing arm 22, respectively, and the lower end of the lower reinforcing arm 23 overlaps with the rear longitudinal beam 41 of the frame 4 and is connected to the lower cross beam 42. To further improve the bending resistance of the vehicle body along the left-right direction y, the aforementioned front reinforcing arm 21, rear reinforcing arm 22 and lower reinforcing arm 23 all define cavities with the inner wall surface of the side panel 1.

[0045] Understandably, since the upper ends of the front reinforcing arm 21 and the rear reinforcing arm 22 are both connected to the D-pillar 31, the front reinforcing arm 21, the rear reinforcing arm 22, and the corresponding D-pillar 31 form a triangular structure. The front reinforcing arm 21, the lower reinforcing arm 23, and the corresponding D-pillar 31 also form a triangular structure. The rear reinforcing arm 22, the lower reinforcing arm 23, the corresponding rear longitudinal beam 41, and the D-pillar 31 together form a quadrilateral ring structure. Furthermore, the D-ring 3 and the frame 4 are both ring structures. Thus, the multiple triangular and ring structures formed in the rear body improve the torsional mode and the stiffness of the rear body structure, increasing vehicle durability, reducing body vibration, and further reducing road noise, thereby improving driving safety and ride comfort.

[0046] In one implementation, such as Figure 2 As shown, the lower reinforcing arm 23 gradually tilts forward from top to bottom, and includes a vertical support 231 and a connecting frame 232 arranged sequentially from top to bottom. The connecting frame 232 connects the vertical support 231 and the lower crossbeam 42, and the longitudinal section of the connecting frame 232 is basically L-shaped, with the corner of the connecting frame 232 located above the rear longitudinal beam 41 on the corresponding side. In another embodiment, the lower reinforcing arm 23 is arranged vertically, or gradually tilts backward from top to bottom.

[0047] In addition, the C-ring assembly 2 adopts a Y-shape, with the front reinforcing arm 21 and the rear reinforcing arm 22 both located at least partially on the upper wall panel 11, while the lower reinforcing arm 23 is located on the inner wall of the rear wheel arch 12, which reduces the space occupied by the rear structure of the vehicle body, thereby increasing the accommodation space.

[0048] In one implementation, such as Figure 4As shown, the rear wheel arch 12 protrudes inward along its own wall thickness direction, and the overlapping parts of the lower reinforcing arm 23, the front reinforcing arm 21 and the rear reinforcing arm 22 cover the top of the rear wheel arch 12.

[0049] Understandably, only part of the lower reinforcing arm 23 covers the inner wall of the rear wheel arch 12, while the front reinforcing arm 21 and the rear reinforcing arm 22 are both located above the rear wheel arch 12 and on the outside of the corresponding lower reinforcing arm 23. This frees up the internal space of the rear structure of the vehicle body, further ensuring a large interior space and meeting the user's demand for a large space.

[0050] In another embodiment, at least one of the lower reinforcing arm 23, the front reinforcing arm 21, and the rear reinforcing arm 22 partially covers the top of the rear wheel arch 12.

[0051] In one implementation, such as Figure 2 and Figure 4 As shown, the front reinforcing arm 21 includes a first bracket 211, a second bracket 212, and a third bracket 213. The third bracket 213 includes a horizontal plate portion 2131 covering the top of the rear wheel arch 12. The first bracket 211 and the second bracket 212 are connected sequentially from top to bottom. At least a portion of the lower region of the second bracket 212 covers the inner wall surface of the third bracket 213 opposite to the inner side panel 1 and is connected to the third bracket 213. In another embodiment, the first bracket 211 and the second bracket 212 in the front reinforcing arm 21 are integrally formed parts.

[0052] In one implementation, such as Figure 2 and Figure 4 As shown, the rear reinforcing arm 22 includes an upper bracket 221 and a lower bracket 222 connected sequentially from top to bottom. At least a portion of the lower region of the lower bracket 222 covers the connection between the transverse plate portion 2131 and the rear wheel arch 12. It is understood that this split arrangement increases the strength and bending resistance of the connection between the second bracket and the second bracket. Specifically, as... Figure 4 As shown, the top of the lower reinforcing arm 23 includes a bent portion 2311 covering the horizontal plate portion 2131, that is, the bent portion 2311 is located on the top of the vertical support 231. Figure 4 Combination Figure 7 As shown, the lower region of the lower bracket 222 has a first side portion 2221 covering the cross plate portion 2131 and the second bracket 212, and a second side portion 2222 covering the inner wall of the rear wheel arch 12. It can be understood that the above arrangement further increases the strength at the location of the cross plate portion 2131.

[0053] In another embodiment, the rear reinforcing arm 22 can also be formed by the upper bracket 221 and the lower bracket 222 being integrally formed.

[0054] In one implementation, such asFigure 4 As shown, the C-ring assembly 2 also includes a side reinforcing plate 24. The longitudinal section of the side reinforcing plate 24 is basically inverted L-shaped, and the side reinforcing plate 24 includes a top plate 241 and a side plate 242. The top plate 241 covers the aforementioned bent portion 2311 and the first side portion 2221, and the second side portion 2222 and the lower reinforcing arm 23 are partially located between the inner wall surface of the rear wheel arch 12 and the side plate 242. Specifically, the top plate 241 is in close contact with the bent portion 2311 and the first side portion 2221, while a gap is left between the side plate 242 and the inner wall surface of the rear wheel arch 12.

[0055] like Figure 7 As shown, an outer reinforcing frame 25 is provided on the outer wall surface of the rear wheel arch 12 at the position corresponding to the lower reinforcing arm 23. The outer reinforcing frame 25 extends along the length direction of the lower reinforcing arm 23, and a first space is defined between the outer reinforcing frame 25 and the outer wall surface of the rear wheel arch 12. It can be understood that the presence of the outer reinforcing frame increases the rigidity of the rear wheel arch 12, and the first space between the outer reinforcing frame 25 and the outer wall surface of the rear wheel arch 12 is beneficial to improving the bending resistance of the rear wheel arch 12 in the y direction.

[0056] In one embodiment, the outer reinforcing frame 25 is a single-piece molded part. In another embodiment, the outer reinforcing frame 25 is formed by connecting at least two parts, which are arranged sequentially along the length of the outer reinforcing frame 25.

[0057] like Figure 3 and Figure 7 As shown, a reinforcing component 26 is provided on the outer wall surface of the upper wall panel 11 at the position corresponding to the front reinforcing arm 21. The reinforcing component 26 extends along the length direction of the front reinforcing arm 21 and defines a second space with the outer wall surface of the upper wall panel 11. It can be understood that the presence of the reinforcing component 26 increases the rigidity of the upper wall panel 11, and the existence of a second space between the reinforcing component 26 and the outer wall surface of the upper wall panel 11 is beneficial to improving the bending resistance of the upper wall panel 11 in the y direction.

[0058] In one embodiment, the reinforcing component 26 includes a first reinforcing frame 261 corresponding to the first bracket 211 and a second reinforcing frame 262 corresponding to the second bracket 212. In another embodiment, the reinforcing component 26 is a structure formed integrally from the first reinforcing frame 261 and the second reinforcing frame 262.

[0059] It is understandable that the aforementioned external reinforcing frame 25 and reinforcing component 26 are set on the outer wall surface of the inner side panel 1 to avoid occupying the inner space. This ensures a large interior space while improving the rigidity of the inner side panel 1, which is beneficial to ensuring the overall rigidity of the vehicle body.

[0060] In one implementation, such as Figure 1 Combination Figure 7As shown, part of the upper wall panel 11 is located between the reinforcing component 26 and the third bracket 213. The third bracket 213 has a mounting plate 5 for mounting a shock absorber at a position below the horizontal plate portion 2131. The mounting plate 5 is connected to the third bracket 213, and a cavity 2132 is formed between the mounting plate 5, the third bracket 213, and the upper wall panel 11 of the inner side panel 1.

[0061] Understandably, since the overlapping joints of the lower reinforcing arm 23, the front reinforcing arm 21, and the rear reinforcing arm 22 cover the top of the rear wheel arch 12, i.e., cover the horizontal plate portion 2131, the strength at the horizontal plate portion 2131 is increased. The mounting plate 5 for mounting the shock absorber is located below the horizontal plate portion 2131 and forms a cavity 2132 with the third bracket 213 and the upper wall plate 11, which improves the rigidity of the rear structure of the vehicle body at the shock absorber mounting point, resulting in better vibration isolation of the vehicle body, reducing the dynamic forces transmitted from the vehicle chassis to the vehicle body, and thus reducing interior noise.

[0062] In one embodiment, the third bracket 213 further includes a flange 2133, which is formed by at least two adjacent sides of the horizontal plate portion 2131 extending downwards. The flange 2133 is located on the side of the horizontal plate portion 2131 away from the upper wall panel 11. A protruding edge 51 is formed by extending downwards around the periphery of the mounting plate 5. A portion of the outer wall surface of the protruding edge 51 abuts against the inner wall surface of the flange 2133, and another portion of the outer wall surface of the protruding edge 51 abuts against the inner wall surface of the upper wall panel 11. Thus, the cavity 2132 is formed together by the upper wall panel 11, the third bracket 213, the mounting plate 5, and the protruding edge 51. The aforementioned design further increases the reliability of the cavity formation and further improves the rigidity of the rear structure of the vehicle body.

[0063] like Figure 4 As shown, reinforcing ribs 214 extending along the length of the front reinforcing arm 21 are provided on the inner wall surfaces of both the second bracket 212 and the third bracket 213. When the second bracket 212 is overlapped with the third bracket 213, the reinforcing ribs 214 of the second bracket 212 are connected to the reinforcing ribs 214 of the third bracket 213. In one embodiment, a portion of the wall panel of the second bracket 212 arches upward to form its own reinforcing rib 214. In this case, a groove is formed in the second bracket 212 at the position corresponding to the reinforcing rib 214, and a portion of the reinforcing rib 214 of the third bracket 213 is located within the aforementioned groove. In another embodiment, the reinforcing rib 214 is formed on the inner wall surface of the second bracket 212. To further improve the rigidity at the mounting plate 5, both the second bracket 212 and the third bracket 213 have two reinforcing ribs 214, which are spaced apart along the front-rear direction x.

[0064] Understandably, the arrangement of the aforementioned reinforcing ribs 214 and front reinforcing arms 21 improves the stiffness of the shock absorber mounting area, resulting in better vehicle vibration isolation, reducing the dynamic forces transmitted from the vehicle chassis to the vehicle body, and thus reducing interior noise.

[0065] like Figure 2 As shown, the front edge of the rear wheel arch 12 is used to connect with the rear frame 6 of the rear door frame of the vehicle body. A connecting shell 27 is installed on the inner wall of the rear wheel arch 12. The connecting shell 27 is at least partially located in front of the lower reinforcing arm 23, and the connecting shell 27 and the inner wall of the rear wheel arch 12 define a third space. The connecting shell 27 has a mounting hole 2722 for mounting a seat.

[0066] Understandably, the connecting shell 27 forms both the seat mounting position and part of the rear structure of the vehicle body, forming a third space with the inner wall of the rear wheel arch 12. This is beneficial for improving the strength and rigidity of the seat mounting position, and for further improving the torsional mode and vehicle durability. At the same time, it improves the road noise problem caused by the vibration of the rear structure of the vehicle body, reduces the dynamic force transmitted from the chassis to the vehicle body, and thus reduces the noise inside the vehicle, i.e., it has a good vibration isolation effect.

[0067] In one embodiment, the connecting shell 27 is a one-piece molded part. In another embodiment, such as... Figure 2 As shown, the connecting shell 27 includes a front shell 271 and a rear shell 272 connected sequentially from front to back. The front edge of the front shell 271 overlaps the inner wall of the rear frame 6, and the rear edge of the rear shell 272 is located between the inner wall of the rear wheel arch 12 and the lower reinforcing arm 23. The front shell 271, the rear shell 272, and the inner wall of the rear wheel arch 12 together define the aforementioned third space. In this embodiment, the rear shell 272 has a boss 2721 that partially protrudes away from the rear wheel arch 12, and the aforementioned mounting hole 2722 is located on the boss 2721 of the rear shell 272. In this embodiment, the mounting hole 2722 is located on the boss 2721 and is located between the front reinforcing arm 21 and the rear longitudinal beam 41.

[0068] In addition to screw connections, other fixing methods, such as welding, can also be used for the above-mentioned connections.

[0069] This application also provides a vehicle including the aforementioned rear body structure, which is an automobile, such as an SUV.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A rear structure for a vehicle body, characterized in that, include: The inner side panel (1) is arranged vertically, and the inner side panel (1) includes an upper wall panel (11) and a rear wheel cover (12) connected sequentially from top to bottom; C-ring assembly (2) is connected to the inner wall of the side panel (1). The C-ring assembly (2) is Y-shaped and includes a vertically arranged lower reinforcing arm (23) and a front reinforcing arm (21) and a rear reinforcing arm (22) arranged sequentially from front to back. The front reinforcing arm (21) and the rear reinforcing arm (22) at least partially cover the inner wall of the upper panel (11). The upper end of the lower reinforcing arm (23) overlaps with the front reinforcing arm (21) and the rear reinforcing arm (22) respectively. At least part of the lower reinforcing arm (23) covers the inner wall of the rear wheel arch (12). The front reinforcing arm (21), the rear reinforcing arm (22) and the lower reinforcing arm (23) all form a cavity with the inner wall of the side panel (1). D-ring (3), the D-ring (3) includes two D-pillars (31) arranged at intervals along the left and right direction (y) of the vehicle body and an upper crossbeam (32) and a rear crossbeam (33) arranged sequentially from top to bottom. The upper crossbeam (32) and the rear crossbeam (33) both extend along the left and right direction (y) of the vehicle body. The upper end of the D-pillar (31) is connected to the corresponding end of the upper crossbeam (32) through a connector (34), and the lower end of the D-pillar (31) is connected to the corresponding end of the rear crossbeam (33). The upper end of the front reinforcing arm (21) is connected to the corresponding side connector (34), and the upper end of the rear reinforcing arm (22) is connected to the corresponding side D-pillar (31).

2. The rear structure of the vehicle body according to claim 1, characterized in that, The rear wheel arch (12) protrudes inward along its own wall thickness direction, and the overlapping part of the lower reinforcing arm (23), the front reinforcing arm (21) and the rear reinforcing arm (22) covers the top of the rear wheel arch (12).

3. The rear structure of the vehicle body according to claim 2, characterized in that, The front reinforcing arm (21) is arranged vertically and includes a first bracket (211), a second bracket (212) and a third bracket (213). The third bracket (213) includes a horizontal plate (2131) covering the top of the rear wheel arch (12). The first bracket (211) and the second bracket (212) are connected sequentially from top to bottom. The lower part of the second bracket (212) is connected to the third bracket (213).

4. The rear structure of the vehicle body according to claim 3, characterized in that, The rear reinforcing arm (22) includes an upper bracket (221) and a lower bracket (222) connected sequentially from top to bottom. At least part of the lower area of ​​the lower bracket (222) covers the connection between the horizontal plate (2131) and the rear wheel arch (12). The third bracket (213) is provided with a mounting plate (5) for mounting a shock absorber at a position below the horizontal plate (2131). The mounting plate (5) is connected to the third bracket (213). A cavity (2132) is formed between the third bracket (213), the mounting plate (5), and the upper wall panel (11) of the inner side panel (1).

5. The rear structure of the vehicle body according to claim 1, characterized in that, The outer wall of the rear wheel arch (12) is provided with an outer reinforcing frame (25) at the position corresponding to the lower reinforcing arm (23). The outer reinforcing frame (25) extends along the length direction of the lower reinforcing arm (23), and a first space is defined between the outer reinforcing frame (25) and the outer wall of the rear wheel arch (12).

6. The rear structure of the vehicle body according to claim 1, characterized in that, The outer wall surface of the upper wall panel (11) is provided with a reinforcing component (26) at the position corresponding to the front reinforcing arm (21). The reinforcing component (26) extends along the length direction of the front reinforcing arm (21) and defines a second space with the outer wall surface of the upper wall panel (11).

7. The rear structure of the vehicle body according to claim 1, characterized in that, A connecting shell (27) is installed on the inner wall surface of the rear wheel arch (12). The connecting shell (27) is at least partially located in front of the lower reinforcing arm (23), and the connecting shell (27) and the inner wall surface of the rear wheel arch (12) define a third space. The connecting shell (27) is provided with mounting holes (2722) for mounting a seat.

8. The rear structure of the vehicle body according to any one of claims 1 to 7, characterized in that, It also includes a frame (4) located below the upper wall panel (11). The frame (4) includes two rear longitudinal beams (41) spaced apart along the left-right direction (y) of the vehicle body and a lower crossbeam (42) located between the two rear longitudinal beams (41). The rear longitudinal beams (41) extend along the front-rear direction (x) of the vehicle body. The side of the rear longitudinal beams (41) extending along the front-rear direction (x) of the vehicle body is connected to the inner wall of the rear wheel arch (12). The rear end of the rear longitudinal beams (41) is connected to the rear crossbeam (33). The lower crossbeam (42) extends along the left-right direction (y) of the vehicle body. The left and right ends of the lower crossbeam (42) are respectively connected to the rear longitudinal beams (41) on the corresponding sides. The lower end of the lower reinforcing arm (23) rests on the rear longitudinal beams (41) and is connected to the lower crossbeam (42).

9. A vehicle, characterized in that, The vehicle body rear structure includes any one of claims 1 to 8, wherein there are two side inner panels (1) in the rear structure, and each side inner panel (1) corresponds to one of the C-ring components (2).

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