CN219487571U - Enclose assembly and vehicle behind automobile body - Google Patents

Abstract

The application provides a enclose assembly and vehicle behind automobile body, wherein, enclose the assembly after this automobile body and include: a rear wall assembly and two rear bumper mounts. The back wall assembly comprises a back wall inner plate and two connecting plates; the two connecting plates are respectively lapped on the two sides of the rear wall inner plate; the edges of the two connecting plates and the edge of the rear wall inner plate form an overlapped part respectively; the two rear bumper mounting frames are arranged at the lower part of the rear wall assembly; and one end of the rear bumper mounting frame, which is close to the rear wall assembly, is fixedly connected with the overlapping part. According to the vehicle body rear wall assembly, the mode and the rigidity of the vehicle body rear wall assembly can be improved on the premise that the weight of the vehicle is not increased, and therefore the NVH performance of the vehicle body rear wall assembly is improved.

Description

A vehicle body rear wall assembly and vehicle

technical field

The present application relates to the technical field of vehicle accessories, and more specifically, relates to a vehicle body rear wall assembly and a vehicle in the technical field of vehicle accessories.

Background technique

The rear wall assembly is an important part of the car body, and the modal and stiffness of its structure directly affect the NVH (Noise, Vibration, Harshness, noise, vibration, and harshness) performance of the rear wall.

In the related art, some vehicle models increase the modulus and stiffness of the rear wall by increasing the thickness of the rear wall inner panel. However, while increasing the thickness of the rear wall inner panel to improve the rear wall mode and stiffness, it will also significantly increase the weight of the vehicle.

Utility model content

The present application provides a body rear wall assembly and a vehicle, which can improve the mode and stiffness of the rear wall without increasing the weight of the vehicle, thereby improving the NVH performance of the rear wall. The specific technical scheme is as follows:

In a first aspect, the present application provides a vehicle body rear wall assembly, including:

The rear wall assembly, the rear wall assembly includes a rear wall inner panel and two connecting plates; the two connecting plates are respectively lapped on both sides of the rear wall inner panel; the edges of the two connecting plates are respectively connected to the the edges of the rear inner panel form an overlap; and

Two rear bumper mounting frames, the two rear bumper mounting frames are arranged at the lower part of the rear wall assembly; one end of the rear bumper mounting frame close to the rear wall assembly is fixedly connected to the overlapping portion.

In the above technical solution, the rear bumper mounting frame is fixedly connected to the overlapped position of the lower connecting plate of the rear wall assembly and the overlapping part of the rear wall inner panel to form a three-layer superposition of the rear wall inner panel, the connecting plate and the bumper mounting frame The structure can enhance the structural strength of the rear panel assembly, and can effectively improve the mode and stiffness of the rear panel assembly without increasing the weight of the vehicle, thereby improving the NVH performance of the rear panel assembly.

With reference to the first aspect, in some possible implementation manners, the rear bumper mounting frame includes a mounting frame body and a connecting portion provided at an end of the mounting frame body close to the rear wall assembly;

The width of the overlapping portion is smaller than the width of the connecting portion; a part of the side of the connecting portion facing the rear wall assembly is fixedly connected to the overlapping portion, and the other part is connected to the connecting plate close to the overlapping portion. Other parts are fixedly connected.

In the above technical solution, setting the width of the overlapping portion of the connecting plate and the inner panel of the rear wall to be smaller than the width of the connecting portion at the upper end of the mounting frame body can save materials and reduce the cost of the rear wall assembly of the vehicle body on the premise of ensuring the structural strength of the rear wall assembly. the weight of.

In combination with the first aspect and the above implementation manner, the side of the rear bumper mounting frame facing the rear panel assembly is provided with a first flow guide groove, and the first flow guide groove has an upper edge extending to the edge of the connecting part. A port and a lower port located on the body of the installation frame, and the lower port is below the rear wall assembly.

In the above technical solution, by setting the first diversion groove with the upper port and the lower port on the bumper mounting frame, the accumulated water on the inner panel of the rear wall can be led out, and the accumulated water on the inner panel of the rear wall can be prevented from corroding the metal parts. part.

In combination with the first aspect and the above-mentioned implementation manner, the first flow guide groove includes a vertical section and an inclined section, and the inclined section extends toward the rear wall inner panel and has the upper port;

A second diversion groove is provided on the side of the connecting plate facing the rear bumper mounting frame, and the second diversion groove communicates with the first diversion groove.

In the above technical solution, by setting the second diversion groove connected to the first diversion groove on the connection plate, on the one hand, the accumulated water on the connection plate can be led out, so as to avoid the accumulation of water on the connection plate from corroding metal parts, and on the other hand On the one hand, the second diversion groove can also be used as a reinforcing rib to further improve the structural strength of the rear wall assembly.

In combination with the first aspect and the above-mentioned implementation, the rear bumper mounting frame further includes a bending portion provided at the lower end of the mounting frame body;

A first reinforcing rib is provided at the joint between the mounting frame body and the bending portion.

In the above technical solution, by setting the first reinforcing rib at the connection between the mounting frame body and the bending part, the structural strength of the lower end of the rear bumper mounting frame can be strengthened, and the stability and firmness of the rear bumper mounted on the bending part can be effectively improved. .

In combination with the first aspect and the above implementation manner, the bending part is provided with an installation hole;

The rear bumper installation frame also includes nuts, and the nuts are fixedly arranged at the installation holes. In the above technical solution, mounting holes and nuts are provided in the bending portion, and the rear bumper can be fixed on the rear bumper mounting frame by passing bolts through the mounting holes and nuts.

In combination with the first aspect and the above-mentioned implementation, the edges on both sides of the rear bumper mounting bracket are respectively provided with flanging;

The flange extends from below the upper port of the first guide groove to the bent portion.

In the above technical solution, by arranging flanges on both side edges of the rear bumper mounting frame, the rigidity of both sides of the rear bumper mounting frame can be enhanced, and the overall structural strength of the entire rear bumper mounting frame can be effectively improved.

In combination with the first aspect and the above implementation manner, a first positioning hole is formed at one end of the mounting frame body near the connecting portion, and a second positioning hole is formed at the other end near the bending portion.

In the above technical solution, the first positioning hole and the second positioning hole are provided on the mounting bracket body, and when the rear bumper is fastened by bolts, the positioning and installation of the rear bumper can be facilitated.

In combination with the first aspect and the above-mentioned implementation manner, reinforcing ribs are provided on the mounting frame body corresponding to the first positioning hole and the second positioning hole;

The mounting frame body is provided with a second reinforcing rib extending along its length, and the second reinforcing rib is located between the first positioning hole and the second positioning hole.

In the above technical solution, by setting reinforcing ribs on the mounting frame body corresponding to the first positioning hole and the second positioning hole, the structural strength at both ends of the mounting frame body can be enhanced; through the first positioning hole and the second positioning hole on the mounting frame body The second reinforcing rib extending along the length direction of the mounting frame body is set between the positioning holes, which can enhance the structural strength of the middle part of the mounting frame body; The stability and firmness of the rear bumper.

In combination with the first aspect and the above implementation manner, the mounting frame body is provided with a plurality of weight reducing holes, at least one of the weight reducing holes is located above the first positioning hole, and at least one of the weight reducing holes is located above the first positioning hole. Below the second positioning hole.

In the above technical solution, by providing a plurality of lightening holes on the mounting frame body, the weight of the rear bumper mounting frame can be reduced without affecting the structural rigidity of the rear bumper mounting frame.

In a second aspect, the present application also provides a vehicle, which includes the body rear panel assembly described in any one of the above first aspects.

Description of drawings

Fig. 1 is a three-dimensional structural schematic view of a vehicle body rear wall assembly provided in an embodiment of the present application;

Fig. 2 is a schematic diagram of the front view of the body rear wall assembly of Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of another viewing angle of a vehicle body rear panel assembly provided by an embodiment of the present application;

Fig. 4 is a front structural schematic view of the body rear wall assembly of Fig. 3;

Fig. 5 is a schematic structural view of the rear bumper mounting frame in the body rear wall assembly of Fig. 1 and Fig. 3;

Fig. 6 is an enlarged structural schematic diagram of part I in the rear wall assembly of the vehicle body in Fig. 4 .

The description of each label in the figure is as follows:

1—rear wall assembly; 11—rear wall inner panel; 12—connecting plate; 121—second diversion groove;

2—Rear bumper mounting bracket;

21—connection portion; 211—first diversion groove; 2111—vertical section; 2112—inclined section;

22—mounting frame body; 221—flange; 222—first positioning hole; 223—second positioning hole; 224—reinforcing rib; 225—second reinforcing rib; 226—weight reduction hole;

23—bending portion; 231—the first rib; 232—nut.

Detailed ways

The technical solution in this application will be described clearly and in detail below in conjunction with the accompanying drawings. Among them, in the description of the embodiments of this application, unless otherwise specified, "/" means or means, for example, A/B can mean A or B: "and/or" in the text is only a description of associated objects The association relationship indicates that there may be three kinds of relationships, such as A and/or B, which may indicate that A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiment of the present application, "A plurality" means two or more than two.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as implying or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features.

The modality and stiffness of the rear wall assembly directly affect its NVH performance. In the related art, some vehicle models increase the modulus and stiffness of the rear wall by increasing the thickness of the rear wall inner panel. However, while increasing the thickness of the rear wall inner panel to improve the rear wall mode and stiffness, it will also significantly increase the weight of the vehicle.

In order to increase the modality and stiffness of the rear wall without increasing the weight of the vehicle, thereby improving the NVH performance of the rear wall, an embodiment of the present application provides a body rear wall assembly and a vehicle. Referring to the accompanying drawings in the description, the vehicle body rear wall assembly provided by the embodiment of the present application will firstly be described in detail.

Please refer to Fig. 1 to Fig. 4, Fig. 1 is a three-dimensional structure schematic diagram of a perspective of the vehicle body rear wall assembly in an embodiment of the present application; Fig. 2 is a front structural schematic diagram of the vehicle body rear wall assembly in Fig. 1; Fig. 3 is Another perspective view of the three-dimensional structure of the vehicle body rear wall assembly in another embodiment of the present application; FIG. 4 is a front structural schematic view of the vehicle body rear wall assembly in FIG. 3 . The first aspect of the present application proposes a vehicle body rear wall assembly, which includes a rear wall assembly 1 and two rear bumper mounting frames 2 .

The rear wall assembly 1 includes a rear wall inner panel 11 and two connecting plates 12; the two connecting plates 12 are respectively lapped on both sides of the rear wall inner panel 11; The edges form an overlap.

Two rear bumper mounting frames 2 are arranged at the lower part of the rear wall assembly 1; one end of the rear bumper mounting frame 2 close to the rear wall assembly is fixedly connected to the overlapping portion.

Wherein, the two connecting plates 12 of the rear wall assembly 1 can be installed with the rear anti-collision beam, and the two rear bumper installation frames 2 can be installed with the rear bumper, and the rear anti-collision beam and the rear bumper are respectively located on both sides of the rear wall assembly 1 .

And, the edge of connecting plate 12 can be fixedly connected with the edge of rear wall inner panel 11 by welding, and the upper end of rear bumper mount 2 also can be fixedly connected with the overlapping portion of connecting plate 12 and rear wall inner panel 11 by welding.

In the embodiment of the present application, the rear wall inner panel 11, the connecting plate 12 and the bumper installation frame 2 are formed by fixing the rear bumper mounting frame 2 at the overlapped position of the connecting plate 12 and the rear wall inner panel 11. The three-layer superimposed structure can enhance the structural strength of the rear wall assembly 1, and can effectively improve the mode and stiffness of the rear wall assembly without increasing the weight of the vehicle, thereby improving the NVH performance of the rear wall assembly .

In addition, in the related art, connecting the rear bumper mounting frame 2 to the rear anti-collision beam can obtain higher overall strength, compared with it, although the embodiment of the present application connects the rear bumper mounting frame The overall strength is reduced, but it is also more prone to deformation, so it can obtain better impact energy absorption performance on the premise of meeting the technical requirements of the rear-end protection device of the vehicle.

In some embodiments of the present application, the rear bumper mounting frame 2 includes a mounting frame body 22 and a connecting portion 21 disposed at an end of the mounting frame body 22 close to the rear wall assembly 1 .

The width of the overlapping portion is smaller than the width of the connecting portion 21; a part of the side of the connecting portion 21 facing the rear wall assembly 1 is fixedly connected to the overlapping portion, and the other part is fixedly connected to other parts of the connecting plate 12 close to the overlapping portion.

It can be understood that when the width of the overlapping portion is smaller than the width of the connecting portion 21, the connecting portion 21 and the connecting plate 12 can be fixedly connected by two layers of welding, wherein the connecting portion 21 is connected to the connecting plate 12 except for the overlapping portion And other positions close to the overlapping portion are fixedly connected to the connecting portion 21 of the installation frame body 22 and the overlapping portion of the connecting plate 12 and the rear wall inner panel 11 by three-layer welding. The number of welding points for two-layer welding and three-layer welding can be determined according to factors such as the length of the connecting portion 21 and the distance between welding points. For example, there can be one welding point for two-layer welding, and two welding points for three-layer welding.

In the embodiment of the present application, the width of the overlapping portion of the connecting plate 12 and the inner panel 11 of the rear wall is set to be smaller than the width of the connecting portion 21 at the upper end of the mounting frame body 22, which can save material on the premise of ensuring the structural strength of the rear wall assembly 1. Reduce the weight of the rear panel assembly.

Referring to Fig. 2 and Fig. 5, Fig. 5 is a structural schematic diagram of the rear bumper mounting frame 2 in the rear wall assembly of the vehicle body shown in Fig. 1 and Fig. 3 .

In some embodiments of the present application, the side of the rear bumper mounting frame 2 facing the rear panel assembly 1 is provided with a first flow guide groove 211, the first flow guide groove 211 has an upper port extending to the edge of the connecting portion 21 and is located at The lower port of the frame body 22 is installed, and the lower port is located below the rear wall assembly 1 .

It can be understood that the upper port of the first diversion groove 211 extends to the edge of the connecting part 21, and can guide the accumulated water on the rear wall inner panel 11 into the first diversion groove 211; the lower port of the first diversion groove 211 is located at The mounting bracket body 22 can be exposed under the rear wall assembly 1 to guide the accumulated water introduced into the first diversion groove 211 out smoothly.

Wherein, the rear bumper mounting frame 2 can be made of a thin metal plate, and the first diversion groove 211 can be made through a stamping process.

In the embodiment of the present application, by setting the first diversion groove 211 with an upper port and a lower port on the bumper mounting frame 2, the accumulated water on the rear wall inner panel 11 can be led out, and water on the rear wall inner panel 11 can be avoided. Standing water corrodes metal parts.

Referring to Fig. 4 to Fig. 6, Fig. 6 is an enlarged structural schematic diagram of part I in the rear panel assembly of Fig. 4 .

In some embodiments of the present application, the first diversion groove 211 includes a vertical section 2111 and an inclined section 2112 , and the inclined section 2112 extends toward the rear wall inner panel 11 and has the upper port in the above-mentioned embodiments.

The lower end of the connecting plate 12 faces the side of the rear bumper mounting frame 2 and is provided with a second diversion groove 121 , and the second diversion groove 121 communicates with the first diversion groove 211 .

It should be noted that, when the connecting portion 21 at the upper end of the bumper mounting frame 2 is connected to the connecting plate 12 , a second guide groove 121 may also be provided on the connecting plate 12 . The second diversion groove 121 communicates with the first diversion groove 211 , and can lead out the accumulated water on the connecting plate 12 . The second diversion groove 121 can have various structural forms, and the embodiment of the present application does not specifically limit the structure of the second diversion groove 121, for example, the second diversion groove 121 can be a vertical structure as shown in Figure 6 And located at the position corresponding to the vertical section 2111, it may also be an inclined or curved groove.

In the embodiment of the present application, by setting the second diversion groove 121 corresponding to the vertical section 2111 of the first diversion groove 211 on the connecting plate 12, on the one hand, the accumulated water on the connecting plate 12 can be led out to avoid connection The accumulated water on the plate 12 corrodes the metal parts. On the other hand, the second diversion groove 121 can also be used as a reinforcing rib to further improve the structural strength of the rear wall assembly 1 .

Referring to FIG. 1 , FIG. 2 and FIG. 5 , in some embodiments of the present application, the rear bumper mounting frame 2 further includes a bent portion 23 disposed at the lower end of the mounting frame body 22 .

A first reinforcing rib 231 is provided at the joint between the mounting frame body 22 and the bending portion 23 .

Wherein, the bending angle between the bending portion 23 and the installation frame body 22 may be 90°-94°, for example, the bending angle may be 91°, 93°, etc. FIG. The length of the bent portion 23 can be determined according to the width of the rear bumper. The first reinforcing rib 231 may be a triangular rib, a semicircular rib, or the like.

In the embodiment of the present application, by setting the first reinforcing rib 231 at the joint between the mounting frame body 22 and the bending portion 23, the structural strength of the lower end of the rear bumper mounting frame 2 can be strengthened, and the rear bumper mounted on the bending portion 23 can be effectively improved. The stability and firmness of the bar.

Referring to FIG. 5 , in some embodiments of the present application, the bent portion 23 defines a mounting hole.

The rear bumper mounting frame 2 also includes a nut 232 fixedly arranged at the mounting hole.

Wherein, the nut 232 is arranged coaxially with the installation hole.

In the embodiment of the present application, installation holes and nuts 232 are provided in the bent portion 23 , and the rear bumper can be fixed on the rear bumper installation frame 2 through the installation holes and the nuts 232 by bolts.

Referring to FIG. 5 , in some embodiments of the present application, flanges 221 are respectively provided on both side edges of the rear bumper mounting bracket 2 .

The flange 221 extends from below the upper port of the first guide groove 211 to the bent portion 23 .

It should be noted that, in order to prevent the flange 221 from blocking the accumulation of water on the rear wall inner panel 11 from being led out from the first diversion groove 211 of the connecting part 21 of the mounting frame body 22, and to ensure the normal operation of the first diversion groove 211, the present application implements For example, the flange 221 is configured to extend from below the upper port of the first guide groove 211 to the bent portion 23 .

Wherein, as shown in FIG. 5 , the flanging 221 can be in the form of turning outward toward the rear wall assembly 1 . Of course, in another structural form, the flanging 221 can also adopt a structure facing away from the rear wall opposite to the outward turning in FIG. 5 . The structural form of component 1 is inverted.

In the embodiment of the present application, by arranging flanges 221 on both side edges of the rear bumper mounting frame 2, the rigidity of the edges on both sides of the rear bumper mounting frame 2 can be strengthened, and the entire rear bumper mounting frame 2 can be effectively improved. overall structural strength.

Referring to FIG. 5 , in some embodiments of the present application, a first positioning hole 222 is defined at one end of the mounting frame body 22 close to the connecting portion 21 , and a second positioning hole 223 is defined at the other end close to the bending portion 23 .

Wherein, the first positioning hole 222 and the second positioning hole 223 are arranged at intervals, and their shapes may be circular holes, elliptical holes, etc., which are not limited in this embodiment of the present application.

In the embodiment of the present application, a first positioning hole 222 and a second positioning hole 223 are provided on the mounting frame body 22 to facilitate positioning and installation of the rear bumper when the rear bumper is fastened by bolts.

Referring to FIG. 5 , in some embodiments of the present application, reinforcing ribs 224 are provided on the installation frame body 22 corresponding to the first positioning hole 222 and the second positioning hole 223 .

The mounting bracket body 22 is provided with a second reinforcing rib 225 extending along its length, and the second reinforcing rib 225 is located between the first positioning hole 222 and the second positioning hole 223 . and / or

The mounting frame body 22 is provided with a plurality of lightening holes 226 , at least one of which is located above the first positioning hole 222 , and at least one of the lightening holes 226 is located below the second positioning hole 223 .

Wherein, when the rear bumper mounting frame 2 is made of sheet metal, both the reinforcing ribs 224 and the second reinforcing ribs 225 can be manufactured through a stamping process.

In the embodiment of the present application, by setting reinforcing ribs 224 on the mounting frame body 22 corresponding to the first positioning hole 222 and the second positioning hole 223, the structural strength at both ends of the mounting frame body 22 can be enhanced; The second reinforcing rib 225 extending along the length direction of the mounting bracket body 22 is set between the first positioning hole 222 and the second positioning hole 223, which can enhance the structural strength of the middle part of the mounting bracket body 22; Two reinforcing ribs 225 can further improve the stability and firmness of the rear bumper installed on the rear bumper mounting frame 2 .

It can be understood that the number of lightening holes 226 is at least two, and of course it can also be three or four.

In the embodiment of the present application, by providing a plurality of lightening holes 226 on the mounting frame body 22 , the weight of the rear bumper mounting frame 2 can be reduced without affecting the structural rigidity of the rear bumper mounting frame 2 .

In addition, the second aspect of the present application also provides a vehicle, which includes the vehicle body rear wall assembly described in any one of the embodiments of the first aspect above.

The vehicle provided by the embodiment of the present application has all the beneficial effects of the above-mentioned vehicle body rear wall assembly because it has the vehicle body rear wall assembly of the above-mentioned embodiment. The rear wall assembly of the vehicle body has been described in detail above, and will not be repeated here.

In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplification of the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation Construction and operation, so the words describing the positional relationship in the drawings are only for illustrative purposes, and should not be construed as limitations on this patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

The above content is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application, and should covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (10)

1. A vehicle body rear wall assembly, characterized in that, comprising: A rear wall assembly (1), the rear wall assembly (1) includes a rear wall inner panel (11) and two connecting plates (12); the two connecting plates (12) are respectively overlapped in the rear wall the two sides of the board (11); the edges of the two connecting boards (12) respectively form overlapping portions with the edges of the rear wall inner board (11); and Two rear bumper mounting frames (2), the two rear bumper mounting frames (2) are arranged at the lower part of the rear wall assembly (1); the rear bumper mounting frame (2) is close to the rear One end of the surrounding component (1) is fixedly connected with the overlapping portion. 2. The vehicle body rear wall assembly according to claim 1, characterized in that, the rear bumper mount (2) comprises a mount body (22) and is arranged on the mount body (22) close to the A connecting portion (21) at one end of the rear wall assembly (1); The width of the overlapping portion is smaller than the width of the connecting portion (21); a part of the side of the connecting portion (21) facing the rear wall assembly (1) is fixedly connected with the overlapping portion, and the other part is fixedly connected with the Other parts of the connecting plate (12) close to the overlapping portion are fixedly connected. 3. The vehicle body rear wall assembly according to claim 2, characterized in that, the side of the rear bumper mounting frame (2) facing the rear wall assembly (1) is provided with a first guide groove (211) , the first diversion groove (211) has an upper port extending to the edge of the connecting portion (21) and a lower port located at the mounting bracket body (22), and the lower port is connected to the rear wall Below the component (1). 4. The vehicle body rear wall assembly according to claim 3, characterized in that, the first guide groove (211) comprises a vertical section (2111) and an inclined section (2112), and the inclined section (2112) extending towards the rear wall inner panel (11) and having the upper port; The side of the connecting plate (12) facing the rear bumper mounting frame (2) is provided with a second diversion groove (121), and the second diversion groove (121) is connected with the first diversion groove ( 211) Connected. 5. The vehicle body rear wall assembly according to claim 3, characterized in that, the rear bumper mounting frame (2) further comprises a bending portion (23) arranged at the lower end of the mounting frame body (22); A first reinforcing rib (231) is provided at the joint between the installation frame body (22) and the bending portion (23). 6. The vehicle body rear wall assembly according to claim 5, characterized in that, the bending portion (23) is provided with a mounting hole; The rear bumper installation frame (2) also includes a nut (232), and the nut (232) is fixedly arranged at the installation hole. 7. The vehicle body rear wall assembly according to claim 5, characterized in that, flanges (221) are respectively provided on both side edges of the rear bumper mounting frame (2); The flange (221) extends from below the upper port of the first guide groove (211) to the bent portion (23). 8. The vehicle body rear wall assembly according to claim 5, characterized in that, a first positioning hole (222) is opened at one end of the mounting frame body (22) close to the connecting portion (21), and a first positioning hole (222) is opened at the other end close to the A second positioning hole (223) is opened at the bending portion (23). 9. The vehicle body rear wall assembly according to claim 8, characterized in that, on the mounting frame body (22) corresponding to the first positioning hole (222) and the second positioning hole (223) are provided There are reinforcing ribs (224); The mounting bracket body (22) is provided with a second reinforcing rib (225) extending along its length direction, and the second reinforcing rib (225) is located between the first positioning hole (222) and the second positioning hole (222). between holes (223); and/or The mounting frame body (22) is provided with a plurality of lightening holes (226), at least one of the lightening holes (226) is located above the first positioning hole (222), at least one of the lightening holes (226) is located below the second positioning hole (223). 10. A vehicle, characterized by comprising the vehicle body rear wall assembly according to any one of claims 1-9.