Vehicle body rear structure and vehicle

Abstract

The utility model provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a D column inner plate upper section, a D column reinforcing plate upper section and a first reinforcing plate, wherein the D column inner plate upper section and the D column reinforcing plate upper section are connected in a buckled mode and define a cavity, and the first reinforcing plate is arranged in the cavity. The D column inner plate upper section is provided with an inner plate upper section extending body extending towards one side in the vehicle in the left-right direction of the whole vehicle, and the D column reinforcing plate upper section is provided with a reinforcing plate upper section extending body extending towards one side in the vehicle in the left-right direction of the whole vehicle. The reinforcing plate upper section extension body is used for supporting a car body top cover and is provided with a back door hinge mounting part, and the first reinforcing plate is arranged adjacent to the back door hinge mounting part and is supported between the inner plate upper section extension body and the reinforcing plate upper section extension body in the up-down direction of the whole car. According to the vehicle body rear structure, the overall structural strength can be improved, the installation strength of the back door hinge can be improved, the problem that the local strength of the back door hinge is insufficient can be well solved, and compared with a mode of increasing the material thickness, the weight and the cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body rear structure. Simultaneously, the utility model also relates to a vehicle provided with the vehicle body rear structure. Background Art

[0002] With the rapid development of the automotive industry, people have put forward higher requirements for automobile safety and stability. The hinge mounting structure on the vehicle's tailgate is a key force transmission path, and its strength directly affects the passenger's experience. At present, the hinge design on the car body's tailgate is usually to combine the rear section of the side panel sheet metal and the rear section of the top cover sheet metal into one piece to enhance the strength of the tailgate hinge and its ability to resist bending and deformation. When the strength of the tailgate hinge and its ability to resist bending and deformation are weak, the strength and resistance to bending are usually improved by increasing the thickness of the rear section of the side panel sheet metal and the rear section of the top cover sheet metal. Although this method can increase the strength of the tailgate hinge, the manufacturing cost is high and the weight increase is large, which is not conducive to lightweight design. Utility Model Content

[0003] In view of this, the present invention aims to provide a vehicle body rear structure to improve the installation strength of the tailgate hinge and facilitate lightweight design.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A vehicle body rear structure, comprising a D-pillar inner panel upper portion and a D-pillar reinforcement panel upper portion, which are fastened and connected to form a cavity, and a first reinforcement panel disposed in the cavity;

[0006] The upper portion of the inner panel of the D-pillar has an inner panel upper portion extension extending toward the vehicle interior along the left-right direction of the vehicle, and the upper portion of the reinforcement panel of the D-pillar has a reinforcement panel upper portion extension extending toward the vehicle interior along the left-right direction of the vehicle;

[0007] The reinforcing plate upper extension is used to support the vehicle body roof and is provided with a tailgate hinge mounting portion. The first reinforcing plate is arranged adjacent to the tailgate hinge mounting portion and is supported between the inner panel upper extension and the reinforcing plate upper extension in the up and down directions of the vehicle.

[0008] Furthermore, the reinforcing plate upper section extension body has a front portion and a rear portion arranged in a stepped manner, and a transition portion provided therebetween, and the front portion is higher than the rear portion in the vertical direction of the vehicle;

[0009] The first reinforcing plate is disposed between the front portion and the inner panel upper extension, and the tailgate hinge mounting portion is disposed on the rear portion.

[0010] Furthermore, the inner panel upper extension body includes a transverse portion extending along the front-to-rear direction of the vehicle, and a longitudinal portion provided at the front end of the transverse portion, wherein the longitudinal portion extends upward along the up-down direction of the vehicle;

[0011] The first reinforcing plate is box-shaped and connected to the transverse portion and the longitudinal portion to form a first cavity.

[0012] Furthermore, the first reinforcing plate includes side walls on both sides, and a top wall provided between the side walls on both sides;

[0013] The top wall is connected to the front portion, and the first reinforcing plate is connected to both the transverse portion and the longitudinal portion through the side walls on both sides.

[0014] Furthermore, the first reinforcing plate includes a rear wall provided between the side walls on both sides, and the rear wall abuts against the transition portion.

[0015] Furthermore, the top of each side wall has a first flange folded toward the corresponding side, and the top of the rear wall has a second flange folded backward;

[0016] The second flange is connected to the first flanges on both sides to form the top wall.

[0017] Furthermore, the front end of the side wall is provided with a third flange folded outward, and the third flange is connected to the longitudinal portion; and / or,

[0018] The bottom end of the side wall is provided with a fourth flange folded outward, and the fourth flange is connected to the transverse portion.

[0019] Furthermore, corresponding to the tailgate hinge mounting portion, a second reinforcement plate is supported between the rear portion and the inner panel upper extension;

[0020] The first reinforcement plate and the second reinforcement plate are arranged sequentially in the front-rear direction of the vehicle.

[0021] Furthermore, the second reinforcing plate is in the shape of a box with an open bottom, and a second cavity is formed between the second reinforcing plate and the upper extension body of the inner plate.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The rear vehicle body structure described in the present invention, by arranging a first reinforcing plate adjacent to the tailgate hinge mounting portion in the cavity, and supporting the first reinforcing plate between the inner panel upper extension and the reinforcing plate upper extension in the entire up and down direction, can not only better support the vehicle body roof, but also improve the overall structural strength of this part, and can better prevent the reinforcing plate upper extension from deforming, thereby improving the installation strength of the tailgate hinge, and can better solve the problem of insufficient local strength of the tailgate hinge. Compared with the method of increasing the material thickness, it can effectively reduce weight and cost, which is conducive to lightweight design.

[0024] Furthermore, the stepped front and rear sections of the upper reinforcement plate extension not only provide superior structural strength, but also facilitate support for the vehicle roof and installation of the tailgate hinge. By providing the first reinforcement plate in a box shape, connected to the transverse and longitudinal sections to form a first cavity, the first reinforcement plate not only provides superior structural strength but also improves the overall structural strength of this area of ​​the vehicle body, further enhancing the installation strength of the tailgate hinge.

[0025] Secondly, the first reinforcement plate is connected to both the transverse and longitudinal sections via the sidewalls on either side, enhancing the connection strength between the first reinforcement plate and the upper extension, while also enabling better force transmission between the two. Including a rear wall between the sidewalls and abutting the rear wall against the transition section further enhances the structural strength of the first reinforcement plate and this area as a whole, thereby further strengthening the installation strength of the tailgate hinge.

[0026] Furthermore, by providing a first flange and a second flange on the side wall and rear wall, respectively, and connecting the second flange to the first flanges on both sides to form the top wall, the structural strength of the first reinforcement plate is further enhanced and manufacturing is also facilitated. Providing a third flange or a fourth flange on the side wall can also improve the structural strength of the first reinforcement plate itself, thereby increasing the overall strength of this part of the vehicle body and the mounting strength of the tailgate hinge.

[0027] Furthermore, a second reinforcement plate, positioned between the rear portion and the upper inner panel extension, corresponding to the tailgate hinge mounting area, further enhances the tailgate hinge's mounting strength. The second reinforcement plate is shaped like a box with an open bottom, and a second cavity is formed between the second reinforcement plate and the upper inner panel extension. This not only provides the second reinforcement plate with superior structural strength, but also further enhances the tailgate hinge's mounting strength.

[0028] Another object of the present invention is to provide a vehicle provided with the vehicle body rear structure as described above.

[0029] The vehicle of the present invention, by providing the vehicle body rear structure as described above, can make the tailgate hinge have better installation strength, thereby ensuring the use effect of the tailgate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a partial structural diagram of the rear vehicle body structure according to an embodiment of the present utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure shown in another perspective;

[0033] Figure 3 for Figure 1 The structure shown is a schematic diagram of the structure when the vehicle body roof is removed;

[0034] Figure 4 for Figure 3 Enlarged view of part A;

[0035] Figure 5 for Figure 3 A schematic diagram of the structure shown in another perspective;

[0036] Figure 6 for Figure 5 Enlarged view of part B;

[0037] Figure 7 This is a structural diagram of the first reinforcing plate according to an embodiment of the present utility model;

[0038] Figure 8 This is a schematic structural diagram of the first reinforcing plate according to an embodiment of the present utility model from another perspective;

[0039] Figure 9 This is a structural schematic diagram of the second reinforcement plate described in an embodiment of the present utility model.

[0040] Description of reference numerals:

[0041] 1. Upper section of the D-pillar reinforcement plate; 2. Roof cover; 3. Upper section of the D-pillar inner plate; 4. First reinforcement plate; 5. Second reinforcement plate;

[0042] 101. Reinforced plate upper section body; 102. Reinforced plate upper section extension; 1021. Front section; 1022. Rear section; 1023. Transition section;

[0043] 301, inner panel upper section body; 302, inner panel upper section extension; 3021, longitudinal section; 3022, transverse section;

[0044] 401, top wall; 402, side wall; 403, rear wall;

[0045] 4021, first flange; 4022, third flange; 4023, fourth flange; 4031, second flange. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0047] In describing this utility model, it should be noted that the directional terms used in this embodiment, such as "up, down, left, right, front, and back," are defined with reference to the up-down, left-right, and front-back directions of the vehicle. The up-down direction of the vehicle is also the vehicle's height (Z direction), the front-back direction of the vehicle is also the vehicle's length (X direction), and the left-right direction of the vehicle is also the vehicle's width (Y direction). Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] The hinge mounting structure on a vehicle's tailgate serves as a critical force transmission path, and its strength directly impacts the passenger experience. Prior art methods typically increase the thickness of the rear side panel sheet metal and the rear roof panel sheet metal to enhance strength and bending resistance. While this approach can increase the strength of the tailgate hinge, it carries high manufacturing costs and significantly increases weight, hindering lightweight design. To address this issue, this embodiment proposes a novel rear vehicle body structure comprising a D-pillar inner panel upper section 3 and a D-pillar reinforcement panel upper section 1, which are interlocked and interconnected to form a cavity, and a first reinforcement panel 4 disposed within the cavity.

[0051] The D-pillar inner panel upper section 3 includes an inner panel upper section extension 302 extending inward along the left-right direction of the vehicle. The D-pillar reinforcement panel upper section 1 includes a reinforcement panel upper section extension 102 extending inward along the left-right direction of the vehicle. The reinforcement panel upper section extension 102 supports the vehicle roof 2 and provides a tailgate hinge mounting portion. The first reinforcement panel 4 is positioned adjacent to the tailgate hinge mounting portion and is supported vertically between the inner panel upper section extension 302 and the reinforcement panel upper section extension 102.

[0052] The rear vehicle body structure of this embodiment employs a first reinforcement plate 4 disposed within the cavity adjacent to the tailgate hinge mounting portion, with the first reinforcement plate 4 being supported vertically between the inner panel upper extension 302 and the reinforcement plate upper extension. This not only effectively supports the vehicle roof 2 but also enhances the overall structural strength of this area, effectively preventing deformation of the reinforcement plate upper extension. This improves the mounting strength of the tailgate hinge, effectively resolving the problem of insufficient local strength in the tailgate hinge. Compared to increasing the thickness of the material, this approach significantly reduces weight and cost, facilitating a lightweight design.

[0053] Based on the above overall introduction, the partial structure of an exemplary structure of the vehicle body rear structure of this embodiment is referred to as follows: Figures 1 to 6 As shown in FIG, since a vehicle body generally has a bilaterally symmetrical structure, only the partial structure of the left rear portion of the vehicle body is illustrated in the figure. The right rear portion and other rear portion structures can be referred to in the prior art and will not be described in detail here. Furthermore, the left and right inner panel upper section extensions 302 and the reinforcing panel upper section extensions 102 are used to connect to the roof rear crossbeam structure, the structure of which can be referred to in the prior art.

[0054] Specifically, combined with Figure 2 and Figure 5 As shown in FIG, in addition to the aforementioned inner panel upper section extension 302, the D-pillar inner panel upper section 3 also includes an inner panel upper section body 301 located on the vehicle body side. This inner panel upper section body 301 extends downward in the vehicle's fore-aft direction, with the inner panel upper section extension 302 located approximately in the middle of this inner panel upper section body 301. Similarly, in addition to the aforementioned reinforcing panel upper section extension 102, the D-pillar reinforcement panel upper section 1 of this embodiment also includes a reinforcing panel upper section body 101 located on the vehicle body side. This reinforcing panel upper section body 101 follows the inner panel upper section body 301, extending downward in the vehicle's fore-aft direction, with the reinforcing panel upper section extension 102 also located approximately in the middle of this reinforcing panel upper section body 101. The reinforcing panel upper section extension 102 and the inner panel upper section extension 302 are preferably welded together to provide a single unit with improved structural strength, thereby enhancing support for the vehicle roof 2 and the mounting strength of the tailgate hinge.

[0055] As a further embodiment, Figure 6 As shown in the figure, the reinforcing plate upper extension 102 of this embodiment comprises a front portion 1021 and a rear portion 1022 arranged in a stepped manner, with a transition portion 1023 disposed therebetween. The front portion 1021 is higher than the rear portion 1022 in the vertical direction of the vehicle. Furthermore, the first reinforcing plate 4 is disposed between the front portion 1021 and the inner panel upper extension 302, while the tailgate hinge mounting portion is disposed on the rear portion 1022. To enhance support for the vehicle roof 2, the vehicle roof 2 of this embodiment preferably conforms to the reinforcing plate upper extension 102. Furthermore, as a specific embodiment, the tailgate hinge mounting portion is a mounting hole disposed on the rear portion 1022, with a corresponding through hole provided on the vehicle roof 2.

[0056] In this embodiment, the reinforcing plate upper section extension 102 is configured with a stepped front portion 1021 and a rear portion 1022, which not only provides improved structural strength but also allows the higher height of the front portion 1021 to facilitate support of the vehicle roof 2, while the lower rear portion 1022 facilitates installation of the tailgate hinge, ensuring that the top of the tailgate is substantially level with the vehicle roof 2 after installation.

[0057] Continue to refer to Figure 6 As shown in , in this embodiment, as a preferred embodiment, the inner panel upper extension body 302 includes a transverse portion 3022 extending along the front-to-back direction of the vehicle, and a longitudinal portion 3021 provided at the front end of the transverse portion 3022, and the longitudinal portion 3021 extends upward along the vertical direction of the vehicle. This structure can make the inner panel upper extension body 302 have better structural strength, thereby improving the overall strength of the inner panel upper extension body 302 and the reinforcing panel upper extension body 102. In addition, as Figure 7 As shown in FIG, the first reinforcing plate 4 of this embodiment is box-shaped and is connected to the transverse portion 3022 and the longitudinal portion 3021 to form a first cavity.

[0058] In this embodiment, the first reinforcing plate 4 is box-shaped and connected to the transverse portion 3022 and the longitudinal portion 3021 to form a first cavity. This not only allows the first reinforcing plate 4 to have better structural strength, but also improves the overall structural strength of this part of the vehicle body, further helping to improve the installation strength of the tailgate hinge.

[0059] Continue to refer to Figure 7 and Figure 8As shown in , specifically, the first reinforcing plate 4 of this embodiment includes side walls 402 on both sides and a top wall 401 disposed between the side walls 402. The top wall 401 is connected to the front portion 1021, and the first reinforcing plate 4 is connected to both the transverse portion 3022 and the longitudinal portion 3021 via the side walls 402 on both sides. In a specific implementation, the side walls 402 on both sides are preferably welded to the transverse portion 3022 and the longitudinal portion 3021. This arrangement can improve the connection strength between the first reinforcing plate 4 and the reinforcing plate upper extension 102, while also enabling better force transmission between the two.

[0060] Still refer to Figure 7 and Figure 8 As shown in , as a further embodiment, the first reinforcing plate 4 further includes a rear wall 403 disposed between the side walls 402, with the rear wall 403 abutting the transition portion 1023. This design further enhances the structural strength of the first reinforcing plate 4 and this portion as a whole, thereby further improving the mounting strength of the tailgate hinge. Furthermore, the rear wall 403 is preferably welded to the transition portion 1023, further enhancing the overall structural strength of this portion of the rear vehicle body. This not only improves the mounting strength of the tailgate hinge, but also enhances support for the vehicle roof 2, ensuring better force transmission.

[0061] At this time, in order to facilitate processing and manufacturing, as a preferred embodiment, Figure 7 As shown in FIG, the top of each side wall 402 has a first flange 4021 that folds toward the corresponding side, and the top of the rear wall 403 has a second flange 4031 that folds backward. These second flanges 4031 are connected to the first flanges 4021 on both sides to form the top wall 401. This structure not only facilitates processing and manufacturing, but also further improves the structural strength of the first reinforcing plate 4, thereby improving the overall structural strength of this portion of the rear vehicle body, and further enhancing the installation strength of the tailgate hinge.

[0062] In addition, as a preferred embodiment, Figure 7 and Figure 8 As shown in FIG, the front end of the side wall 402 is provided with a third flange 4022 that folds outward, and the third flange 4022 is connected to the longitudinal portion 3021. Simultaneously, the bottom end of the side wall 402 is provided with a fourth flange 4023 that folds outward, and the fourth flange 4023 is connected to the transverse portion 3022. In this embodiment, the provision of the third flange 4022 and the fourth flange 4023 not only further enhances the structural strength of the first reinforcing plate 4, but also facilitates the connection of the first reinforcing plate 4 to the transverse portion 3022 and the longitudinal portion 3021.

[0063] It should be noted that, in addition to connecting the first reinforcing plate 4 to both the transverse portion 3022 and the longitudinal portion 3021, the first reinforcing plate 4 may also be connected only to the transverse portion 3022. Furthermore, in addition to providing both the third flange 4022 and the fourth flange 4023, only the third flange 4022 or only the fourth flange 4023 may also be provided.

[0064] like Figure 4 and Figure 6 As shown in the figure, a second reinforcement plate 5 is supported between the rear portion 1022 and the inner panel upper extension 302, corresponding to the tailgate hinge mounting portion. Furthermore, the first reinforcement plate 4 and the second reinforcement plate 5 are arranged sequentially in the vehicle's front-to-back direction. In this embodiment, the second reinforcement plate 5, positioned between the rear portion 1022 and the inner panel upper extension 302, corresponding to the tailgate hinge mounting portion, further enhances the tailgate hinge's mounting strength.

[0065] like Figure 9 As shown in , as a further embodiment, the second reinforcing plate 5 of this embodiment is in the shape of a box with an open bottom, and a second cavity is formed between the second reinforcing plate 5 and the inner panel upper extension 302. By making the second reinforcing plate 5 in the shape of a box with an open bottom and forming a second cavity between the second reinforcing plate 5 and the inner panel upper extension 302, not only does the second reinforcing plate 5 have better structural strength, but it also helps to further improve the installation strength of the tailgate hinge.

[0066] In addition, as a preferred embodiment, the portion where the second reinforcing plate 5 contacts the rear portion 1022 is a flat surface, so that there is a larger contact area between the two. At the same time, corresponding to the above-mentioned mounting holes, a through hole is provided on the second reinforcing plate 5. In addition, in order to further improve the mounting strength of the back door hinge, as shown in FIG. Figure 9 As shown in FIG, the second reinforcing plate 5 is provided with an outwardly folded edge along its circumference. This outwardly folded edge not only further enhances the structural strength of the second reinforcing plate 5 itself, but also facilitates the connection between the second reinforcing plate 5 and the inner panel upper extension 302, allowing for a larger contact area between the two, thereby providing better connection strength, enhancing the support effect on the reinforcing plate upper extension 102, and further improving the installation strength of the tailgate hinge.

[0067] Based on the overall description above, the rear vehicle body structure of this embodiment, by providing the above-described structure, can fill the cavity at the tailgate hinge installation location and enable the first reinforcing plate 4 and the second reinforcing plate 5 to form a force transmission channel. This improves the overall structural strength of the reinforcing plate upper extension 102 and the inner panel upper extension 302 while also enhancing the installation strength of the tailgate hinge, thereby ensuring the stability of the vehicle roof 2 and tailgate during driving. Furthermore, compared to existing methods that increase the material thickness, this reduces overall weight and costs, facilitating a lightweight design. Furthermore, the first and second reinforcing plates 4 and 5 are simple in structure, easy to manufacture, and possess good structural strength.

[0068] In addition, this embodiment also relates to a vehicle, which is provided with the above-mentioned rear body structure.

[0069] The vehicle of this embodiment, by providing the above-mentioned rear vehicle body structure, can make the tailgate hinge have better installation strength, thereby ensuring the use effect of the tailgate.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle body rear structure, characterized in that: It comprises a D-pillar inner plate upper section (3) and a D-pillar reinforcement plate upper section (1) which are fastened together and enclose a cavity, and a first reinforcement plate (4) arranged in the cavity; The D-pillar inner panel upper section (3) has an inner panel upper section extension body (302) extending toward the vehicle interior along the left-right direction of the vehicle, and the D-pillar reinforcement panel upper section (1) has a reinforcement panel upper section extension body (102) extending toward the vehicle interior along the left-right direction of the vehicle; The reinforcing plate upper extension (102) is used to support the vehicle body roof (2) and is provided with a tailgate hinge mounting portion. The first reinforcing plate (4) is provided adjacent to the tailgate hinge mounting portion and is supported between the inner plate upper extension (302) and the reinforcing plate upper extension (102) in the vertical direction of the entire vehicle.

2. The rear vehicle body structure according to claim 1, characterized in that: The reinforcing plate upper section extension body (102) comprises a front portion (1021) and a rear portion (1022) arranged in a stepped manner, and a transition portion (1023) disposed therebetween, and the front portion (1021) is higher than the rear portion (1022) in the vertical direction of the entire vehicle; The first reinforcing plate (4) is provided between the front portion (1021) and the inner plate upper extension body (302), and the rear door hinge mounting portion is provided on the rear portion (1022).

3. The rear vehicle body structure according to claim 2, characterized in that: The inner panel upper extension body (302) includes a transverse portion (3022) extending along the front-rear direction of the vehicle, and a longitudinal portion (3021) provided at the front end of the transverse portion (3022), wherein the longitudinal portion (3021) extends upward along the upper-lower direction of the vehicle; The first reinforcing plate (4) is box-shaped and is connected to the transverse portion (3022) and the longitudinal portion (3021), thereby forming a first cavity.

4. The rear vehicle body structure according to claim 3, characterized in that: The first reinforcing plate (4) comprises side walls (402) on both sides, and a top wall (401) arranged between the side walls (402) on both sides; The top wall (401) is connected to the front portion (1021), and the first reinforcing plate (4) is connected to both the transverse portion (3022) and the longitudinal portion (3021) through the side walls (402) on both sides.

5. The rear vehicle body structure according to claim 4, characterized in that: The first reinforcing plate (4) comprises a rear wall (403) arranged between the side walls (402) on both sides, and the rear wall (403) abuts against the transition portion (1023).

6. The rear vehicle body structure according to claim 5, characterized in that: The top of each side wall (402) has a first flange (4021) folded toward the corresponding side, and the top of the rear wall (403) has a second flange (4031) folded backward; The second flange (4031) is connected to the first flanges (4021) on both sides to form the top wall (401).

7. The rear vehicle body structure according to claim 4, characterized in that: The front end of the side wall (402) is provided with a third flange (4022) folded outward, and the third flange (4022) is connected to the longitudinal portion (3021); and / or, The bottom end of the side wall (402) is provided with a fourth flange (4023) folded outward, and the fourth flange (4023) is connected to the transverse portion (3022).

8. The vehicle body rear structure according to any one of claims 2 to 7, characterized in that: Corresponding to the back door hinge mounting portion, a second reinforcement plate (5) is supported between the rear portion (1022) and the inner panel upper extension body (302); The first reinforcing plate (4) and the second reinforcing plate (5) are arranged in sequence in the front-rear direction of the vehicle.

9. The rear vehicle body structure according to claim 8, characterized in that: The second reinforcing plate (5) is in the shape of a box with an open bottom, and a second cavity is formed between the second reinforcing plate (5) and the inner plate upper extension body (302).

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body rear structure according to any one of claims 1 to 9.

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