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

Enclose assembly and vehicle behind automobile body

Technical Field

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

Background

The rear wall assembly is an important component of the vehicle body, and the mode and rigidity of the structure directly influence the NVH (Noise, vibration, harshness, noise, vibration and harshness) performance of the rear wall.

In the related art, the mode and rigidity of the rear wall are improved by increasing the thickness of the rear wall inner plate. However, increasing the thickness of the inner cowl panel increases the weight of the vehicle while increasing the cowl mode and rigidity.

Disclosure of Invention

The application provides a enclose assembly and vehicle behind automobile body can be under the prerequisite that does not increase vehicle weight, the mode and the rigidity of enclose after improving to enclose after improving NVH performance. The specific technical scheme is as follows:

in a first aspect, the present application provides a vehicle body rear wall assembly comprising:

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; and

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.

Among the above-mentioned technical scheme, enclose the position of the overlapping portion of inner panel overlap joint after enclose subassembly lower part connecting plate and after through with rear bumper mounting bracket fixed connection, enclose inner panel, connecting plate and bumper mounting bracket three-layer superimposed structure after forming, can strengthen the structural strength who encloses the subassembly after, under the prerequisite that does not increase vehicle weight, can effectively improve the mode and the rigidity that enclose the assembly behind the automobile body to improve the NVH performance of enclose the assembly behind the automobile body.

With reference to the first aspect, in some possible implementations, the rear bumper mounting frame includes a mounting frame body and a connecting portion disposed at an end of the mounting frame body near the rear enclosure assembly;

the width of the overlapping part is smaller than that of the connecting part; one part of the side surface of the connecting part facing the rear wall assembly is fixedly connected with the overlapping part, and the other part of the side surface of the connecting part facing the rear wall assembly is fixedly connected with other parts, close to the overlapping part, of the connecting plate.

In the technical scheme, the width of the overlapping part of the connecting plate and the rear wall inner plate is smaller than the width of the connecting part at the upper end of the mounting frame body, so that materials can be saved and the weight of the vehicle body rear wall assembly can be reduced on the premise of ensuring the structural strength of the rear wall assembly.

With reference to the first aspect and the foregoing implementation manner, the side surface of the rear bumper mounting frame facing the rear wall assembly is provided with a first diversion trench, where the first diversion trench has an upper port extending to the edge of the connecting portion and a lower port located on the mounting frame body, and the lower port is located below the rear wall assembly.

Among the above-mentioned technical scheme, through set up the first guiding gutter that has last port and lower port on the bumper mounting bracket, can lead out the ponding on the back wall inner panel, avoid the ponding on the back wall inner panel to corrode metal parts.

With reference to the first aspect and the implementation manner of the first aspect, the first diversion trench includes a vertical section and an inclined section, and the inclined section extends towards the rear surrounding inner plate and has the upper port;

the connecting plate is towards the side of rear bumper mounting bracket is equipped with the second guiding gutter, the second guiding gutter with first guiding gutter intercommunication.

Among the above-mentioned technical scheme, through set up the second guiding gutter with first guiding gutter intercommunication on the connecting plate, can derive ponding on the connecting plate on the one hand, avoid ponding corrosion metal parts on the connecting plate, on the other hand second guiding gutter also can regard as the strengthening rib, further improves the structural strength of enclose the subassembly after.

With reference to the first aspect and the foregoing implementation manner, the rear bumper mounting rack further includes a bending portion disposed at a lower end of the mounting rack body;

the mounting bracket body with the junction of portion of bending is equipped with first strengthening rib.

Among the above-mentioned technical scheme, through set up first strengthening rib in the junction of mounting bracket body and portion of bending, can strengthen rear bumper mounting bracket lower extreme structural strength, effectively improve the stability, the firm degree of the rear bumper of installing at the portion of bending.

With reference to the first aspect and the implementation manner, the bending portion is provided with a mounting hole;

the rear bumper mounting rack further comprises a nut, and the nut is fixedly arranged at the mounting hole. In the technical scheme, the mounting holes and the nuts are formed in the bending parts, and the rear bumper can be fixed on the rear bumper mounting frame through bolts penetrating through the mounting holes and the nuts.

With reference to the first aspect and the implementation manner, flanges are respectively arranged at two side edges of the rear bumper mounting frame;

the flanging extends from the lower part of the upper port of the first diversion trench to the bending part.

Among the above-mentioned technical scheme, through set up the turn-ups at the both sides edge of rear bumper mounting bracket, can play the effect of strengthening rear bumper mounting bracket both sides edge rigid strength, effectively improve the overall structure intensity of whole rear bumper mounting bracket.

With reference to the first aspect and the 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 technical scheme, the first positioning hole and the second positioning hole are formed in the mounting frame body, and the rear bumper can be conveniently positioned and mounted when being fastened through bolts.

With reference to the first aspect and the implementation manner, a reinforcing convex rib is arranged on the mounting frame body at a position corresponding to the first positioning hole and the second positioning hole;

the mounting frame body is provided with a second reinforcing rib extending along the length direction of the mounting frame body, and the second reinforcing rib is positioned between the first positioning hole and the second positioning hole.

In the technical scheme, the structural strength of the two ends of the mounting frame body can be enhanced by arranging the reinforcing ribs on the mounting frame body at the positions corresponding to the first positioning holes and the second positioning holes; the middle structural strength of the mounting frame body can be enhanced by arranging the second reinforcing ribs extending along the length direction of the mounting frame body between the first positioning holes and the second positioning holes on the mounting frame body; therefore, the stability and the firmness of the rear bumper mounted on the rear bumper mounting frame can be further improved by arranging the reinforcing ribs and the second reinforcing ribs.

With reference to the first aspect and the foregoing implementation manner, the mounting bracket body is provided with a plurality of lightening holes, at least one lightening hole is located above the first positioning hole, and at least one lightening hole is located below the second positioning hole.

In the technical scheme, the weight reducing holes are formed in the mounting frame body, so that the weight of the rear bumper mounting frame can be reduced while the structural rigidity of the rear bumper mounting frame is not affected.

In a second aspect, the present application also provides a vehicle comprising a body back wall assembly as described in any one of the first aspects above.

Drawings

FIG. 1 is a schematic three-dimensional view of a vehicle body rear wall assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic front view of the vehicle body rear wall assembly of FIG. 1;

FIG. 3 is a schematic three-dimensional view of a vehicle body rear wall assembly according to an embodiment of the present disclosure;

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

FIG. 5 is a schematic view of the rear bumper mount in the vehicle body rear wall assembly of FIGS. 1 and 3;

fig. 6 is an enlarged schematic view of a part i of the vehicle body rear wall assembly of fig. 4.

The reference numerals in the drawings are as follows:

1-a back wall assembly; 11-a rear wall inner plate; 12-connecting plates; 121-a second diversion trench;

2-rear bumper mounting rack;

21-a connection; 211-a first diversion trench; 2111—a vertical section; 2112—an inclined section;

22-a mounting frame body; 221-flanging; 222-a first positioning hole; 223-a second positioning hole; 224-reinforcing ribs; 225-a second reinforcing rib; 226-lightening holes;

23-bending part; 231-first reinforcing ribs; 232-nut.

Detailed Description

The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The mode and stiffness of the back wall assembly directly affects its NVH performance. In the related art, a part of vehicle models improve the mode and rigidity of the rear wall by increasing the thickness of the rear wall inner panel. However, increasing the thickness of the inner cowl panel increases the weight of the vehicle while increasing the cowl mode and rigidity.

In order to improve the mode and rigidity of the rear wall on the premise of not increasing the weight of the vehicle, so that the NVH performance of the rear wall is improved, the embodiment of the application provides a vehicle body rear wall assembly and the vehicle. The following provides a detailed description of a vehicle body rear wall assembly according to an embodiment of the present application with reference to the drawings.

Referring to fig. 1 to 4, fig. 1 is a schematic three-dimensional structure view of a vehicle body rear wall assembly according to an embodiment of the present application; FIG. 2 is a schematic front view of the vehicle body rear wall assembly of FIG. 1; FIG. 3 is a schematic three-dimensional view of a vehicle body rear wall assembly from another perspective in accordance with another embodiment of the present application; fig. 4 is a schematic front view of the body rear wall assembly of fig. 3. The first aspect of the present application proposes a vehicle body rear wall assembly including a rear wall assembly 1 and two rear bumper mounts 2.

The back wall assembly 1 comprises a back wall inner plate 11 and two connecting plates 12; the two connecting plates 12 are respectively lapped on the two sides of the rear wall inner plate 11; the edges of the two connection plates 12 form overlapping portions with the edges of the rear wall inner panel 11, respectively.

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, which is close to the rear wall assembly, is fixedly connected with the overlapping part.

Wherein, two connecting plates 12 of the back wall assembly 1 can install the back anticollision roof beam, and two back bumper mounting frames 2 can install the back bumper, and back anticollision roof beam and back bumper are located the both sides of the back wall assembly 1 respectively.

The edge of the connecting plate 12 may be fixedly connected to the edge of the rear inner panel 11 by welding, and the upper end of the rear bumper mounting bracket 2 may be fixedly connected to the overlapping portion of the connecting plate 12 and the rear inner panel 11 by welding.

In this embodiment, enclose inner panel 11, connecting plate 12 and bumper mounting bracket 2 three-layer superimposed structure after forming through the position of the overlap portion of rear bumper mounting bracket 2 fixed connection at connecting plate 12 and rear wall inner panel 11 overlap joint, can strengthen the structural strength of enclose subassembly 1 after, under the prerequisite that does not increase vehicle weight, can effectively improve the mode and the rigidity of enclose the assembly behind the automobile body to improve the NVH performance of enclose the assembly behind the automobile body.

In addition, in the related art, the rear bumper mounting frame 2 and the rear anti-collision beam are connected to obtain higher overall strength, compared with the rear bumper mounting frame, although the overall strength of the rear bumper mounting frame 2 and the rear wall assembly 1 is reduced, the rear bumper mounting frame is easier to deform, and therefore better collision energy absorption performance can be obtained 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 bracket 2 includes a mounting bracket body 22 and a connecting portion 21 disposed at an end of the mounting bracket body 22 near the rear wall assembly 1.

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

It will be appreciated 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 may be fixedly connected by two-layer welding, wherein the connecting portion 21 is connected to other portions of the connecting plate 12 than the overlapping portion and close to the overlapping portion, and the overlapping portion of the connecting portion 21 and the connecting plate 12 and the rear wall inner panel 11 of the mounting bracket body 22 is fixedly connected by three-layer welding. The number of the welding spots of the two-layer welding and the three-layer welding may be determined according to the length of the connection portion 21, the pitch of the welding spots, and the like, for example, the number of the welding spots of the two-layer welding may be one, and the number of the welding spots of the three-layer welding may be two.

In this embodiment of the application, set up the overlap portion width of connecting plate 12 and back wall inner panel 11 to be less than the width of mounting bracket body 22 upper end connecting portion 21, can be under the prerequisite of guaranteeing back wall subassembly 1 structural strength, save material reduces the weight of enclose the assembly behind the automobile body.

Referring to fig. 2 and 5, fig. 5 is a schematic structural view of the rear bumper mount 2 in the vehicle body rear wall assembly of fig. 1 and 3.

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

It can be understood that the upper port of the first diversion trench 211 extends to the edge of the connecting portion 21, so that the accumulated water on the rear wall inner plate 11 can be led into the first diversion trench 211; the lower port of the first diversion trench 211 is located below the mounting frame body 22 and the rear wall assembly 1, and can be exposed to smoothly guide out the accumulated water led into the first diversion trench 211.

The rear bumper mounting frame 2 may be made of a metal sheet, and the first diversion trench 211 may be manufactured by a stamping process.

In this embodiment, through set up the first guiding gutter 211 that has last port and lower port on bumper mounting bracket 2, can lead out the ponding on the back wall inner panel 11, avoid the ponding on the back wall inner panel 11 to corrode metal parts.

Referring to fig. 4 to 6, fig. 6 is an enlarged schematic view of a part i of the vehicle body rear wall assembly of fig. 4.

In some embodiments of the present application, the first flow guide groove 211 includes a vertical section 2111 and an inclined section 2112, the inclined section 2112 extending toward the cowl inner panel 11 and having the upper port in the above embodiments.

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

When the connecting portion 21 at the upper end of the bumper mounting frame 2 is connected to the connecting plate 12, a second diversion trench 121 may be further provided on the connecting plate 12. The second diversion trench 121 is communicated with the first diversion trench 211, and can lead out the accumulated water on the connecting plate 12. The second diversion trench 121 may have various structural forms, and the structure of the second diversion trench 121 is not specifically limited in this embodiment, for example, the second diversion trench 121 may be a vertical structure as shown in fig. 6 and located at a position corresponding to the vertical section 2111, and may also be an inclined or curved groove.

In this embodiment of the application, through set up the second guiding gutter 121 corresponding with the vertical section 2111 of first guiding gutter 211 on connecting plate 12, on the one hand can derive ponding on the connecting plate 12, avoid ponding on the connecting plate 12 to corrode metal parts, on the other hand second guiding gutter 121 also can regard as the strengthening rib, further improve the structural strength of back wall subassembly 1.

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

The connection of the mounting frame body 22 and the bending part 23 is provided with a first reinforcing rib 231.

The bending angle between the bending portion 23 and the mounting frame body 22 may be 90 ° to 94 °, for example, the bending angle may be 91 °, 93 °, or the like. The length of the bent portion 23 may 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 this embodiment, through set up first strengthening rib 231 in the junction of mounting bracket body 22 and portion 23 of bending, can strengthen rear bumper mounting bracket 2 lower extreme structural strength, effectively improve the stability, the firm degree of the rear bumper of installing at portion 23 of bending.

Referring to fig. 5, in some embodiments of the present application, the bent portion 23 is provided with a mounting hole.

The rear bumper mounting bracket 2 further includes a nut 232, and the nut 232 is fixedly disposed at the mounting hole.

Wherein the nut 232 is coaxially disposed with the mounting hole.

In the embodiment of the present application, the mounting hole and the nut 232 are provided in the bent portion 23, and the rear bumper can be fixed to the rear bumper mounting bracket 2 by passing the bolt through the mounting hole and the nut 232.

Referring to fig. 5, in some embodiments of the present application, both side edges of the rear bumper mount 2 are provided with burring 221, respectively.

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

It should be noted that, in order to avoid that the flange 221 blocks the accumulated water on the rear wall inner plate 11 to be led out from the first diversion trench 211 of the connecting portion 21 of the mounting frame body 22, the normal operation of the first diversion trench 211 is ensured, and in this embodiment of the present application, the flange 221 is set to extend from the lower portion of the upper port of the first diversion trench 211 to the bending portion 23.

The flange 221 may be configured to be turned outwards toward the back panel 1, as shown in fig. 5, but in another configuration, the flange 221 may be configured to be turned inwards away from the back panel 1 opposite to the turned outwards in fig. 5.

In this embodiment, through set up turn-ups 221 at rear bumper mounting bracket 2's both sides edge, can play the effect of strengthening rear bumper mounting bracket 2 both sides edge rigid strength, effectively improve whole rear bumper mounting bracket 2's overall structure intensity.

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

The first positioning hole 222 and the second positioning hole 223 are spaced apart, and may be a circular hole, an elliptical hole, or the like, which is not limited in the embodiment of the present application.

In this embodiment, set up first locating hole 222 and second locating hole 223 on mounting bracket body 22, when fastening the rear bumper through the bolt-up, can make things convenient for the location and the installation of rear bumper.

Referring to fig. 5, in some embodiments of the present application, the mounting frame body 22 is provided with a reinforcing rib 224 corresponding to the first positioning hole 222 and the second positioning hole 223.

The mounting frame body 22 is provided with a second reinforcing rib 225 extending along the length direction thereof, and the second reinforcing rib 225 is positioned 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 lightening hole 226 is located above the first locating hole 222, and at least one lightening hole 226 is located below the second locating hole 223.

When the sheet metal part is adopted in the rear bumper mounting frame 2, the reinforcing ribs 224 and the second reinforcing ribs 225 can be manufactured through a stamping forming process.

In the embodiment of the application, the reinforcing ribs 224 are arranged on the mounting frame body 22 corresponding to the first positioning holes 222 and the second positioning holes 223, so that the structural strength of the two ends of the mounting frame body 22 can be enhanced; the structural strength of the middle part of the mounting frame body 22 can be enhanced by arranging the second reinforcing ribs 225 extending along the length direction of the mounting frame body 22 between the first positioning holes 222 and the second positioning holes 223 on the mounting frame body 22; therefore, the stability and firmness of the rear bumper mounted on the rear bumper mounting bracket 2 can be further improved by providing the reinforcing bead 224 and the second reinforcing bead 225.

It is understood that the number of the lightening holes 226 is at least two, but may be three, four, etc.

In the present embodiment, by providing the plurality of lightening holes 226 on the mounting frame body 22, the weight of the rear bumper mounting frame 2 can be reduced while the structural rigidity of the rear bumper mounting frame 2 is not affected.

In addition, a second aspect of the present application provides a vehicle, which includes the vehicle body rear wall assembly according to any one of the embodiments of the first aspect.

The vehicle provided by the embodiment of the application has all the beneficial effects of the vehicle body rear wall assembly due to the vehicle body rear wall assembly of the embodiment. The body rear wall assembly is described in detail above and will not be described again here.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely used for illustration and are not to be construed as limitations of the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A vehicle body rear wall assembly, comprising:

the back wall assembly (1), the back wall assembly (1) comprises a back wall inner plate (11) and two connecting plates (12); the two connecting plates (12) are respectively lapped on the two sides of the rear wall inner plate (11); the edges of the two connecting plates (12) and the edge of the rear wall inner plate (11) form overlapping parts respectively; and

two rear bumper mounting frames (2), wherein the 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 (1) is fixedly connected with the overlapping part.

2. The vehicle body rear wall assembly according to claim 1, wherein the rear bumper mounting bracket (2) includes a mounting bracket body (22) and a connecting portion (21) provided at an end of the mounting bracket body (22) near the rear wall assembly (1);

the width of the overlapping portion is smaller than the width of the connecting portion (21); one part of the side surface of the connecting part (21) facing the rear wall assembly (1) is fixedly connected with the overlapped part, and the other part of the side surface is fixedly connected with other parts, close to the overlapped part, of the connecting plate (12).

3. The vehicle body rear wall assembly according to claim 2, wherein a first diversion trench (211) is arranged on the side surface of the rear bumper mounting frame (2) facing the rear wall assembly (1), the first diversion trench (211) is provided with an upper port extending to the edge of the connecting part (21) and a lower port positioned on the mounting frame body (22), and the lower port is positioned below the rear wall assembly (1).

4. A vehicle body rear wall assembly according to claim 3, wherein the first flow guide groove (211) comprises a vertical section (2111) and an inclined section (2112), the inclined section (2112) extending toward the rear wall inner panel (11) and having the upper port;

the side face of the connecting plate (12) facing the rear bumper mounting frame (2) is provided with a second diversion trench (121), and the second diversion trench (121) is communicated with the first diversion trench (211).

5. A vehicle body rear wall assembly according to claim 3, wherein the rear bumper mounting bracket (2) further comprises a bent portion (23) provided at a lower end of the mounting bracket body (22);

the first reinforcing rib (231) is arranged at the joint of the mounting frame body (22) and the bending part (23).

6. The vehicle body rear wall assembly according to claim 5, wherein the bending portion (23) is provided with a mounting hole;

the rear bumper mounting frame (2) further comprises a nut (232), and the nut (232) is fixedly arranged at the mounting hole.

7. The vehicle body rear wall assembly according to claim 5, wherein the rear bumper mounting bracket (2) is provided with flanges (221) at both side edges thereof, respectively;

the flange (221) extends from the lower part of the upper port of the first diversion trench (211) to the bending part (23).

8. The vehicle body rear wall assembly according to claim 5, wherein one end of the mounting frame body (22) is provided with a first positioning hole (222) near the connecting portion (21), and the other end is provided with a second positioning hole (223) near the bending portion (23).

9. The vehicle body rear wall assembly according to claim 8, wherein the mounting frame body (22) is provided with a reinforcing rib (224) corresponding to the first positioning hole (222) and the second positioning hole (223);

the mounting frame body (22) is provided with a second reinforcing rib (225) extending along the length direction of the mounting frame body, and the second reinforcing rib (225) is positioned 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 lightening hole (226) is positioned above the first positioning hole (222), and at least one lightening hole (226) is positioned below the second positioning hole (223).

10. A vehicle comprising a body back assembly as defined in any one of claims 1 to 9.