Vehicle body rear structure and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a vehicle body rear structure and a vehicle, the vehicle body rear structure comprises a tail door frame, a rear side wall inner plate, a rear wheel cover inner plate, a first assembly and a second assembly; the tail door frame comprises a frame upper portion, a first frame side portion, a frame lower portion and a second frame side portion, and the frame upper portion, the first frame side portion, the frame lower portion and the second frame side portion are connected and define a closed tail door annular structure. The upper portion of the frame, the rear side wall inner plate, the rear wheel cover inner plate and the first assembly form a closed D-shaped structure. The rear side wall inner plate, the rear wheel cover inner plate and the second assembly form a closed C-shaped structure. According to the vehicle body rear structure, the overall rigidity and deformation resistance of the vehicle body rear structure can be improved through the three annular structures.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle body rear structure and a vehicle. Background Art

[0002] With the continuous development of science and technology, people's requirements for automobile performance are increasing day by day; the rear structure of the car body has an important influence on the torsional stiffness and NVH (noise, vibration and harshness) performance of the car body; because the rear structure of the car body is directly connected to the rear suspension, it will bear the force transmitted to the car body from the road surface and transmit the force to the car body, so the rear structure of the car body plays an important role in protecting the safety of passengers in the car and improving the riding experience.

[0003] The rear of a common vehicle model, when viewed from the side, is usually composed of a C-ring structure consisting of a C-pillar, rear shock absorber and floor crossbeam, and a D-ring structure consisting of the tailgate door section, while being connected by a top longitudinal beam and a floor longitudinal beam to form a rear body structure; the overall stiffness and deformation resistance of this rear body structure needs to be improved. Summary of the invention

[0004] Aiming to solve at least one of the technical problems existing in the prior art, the present invention aims to provide a vehicle body rear structure and a vehicle having the vehicle body rear structure, wherein the vehicle body rear structure can improve the overall rigidity and anti-deformation ability.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a vehicle body rear structure, including a tailgate frame, a rear side panel inner plate, a rear wheel cover inner plate, a first component and a second component; the tailgate frame includes a frame upper part, a first frame side part, a frame lower part and a second frame side part, and the frame upper part, the first frame side part, the frame lower part and the second frame side part are connected and surround a closed tailgate annular structure; the rear side panel inner plate is connected to the frame upper part; the rear wheel cover inner plate and the rear side panel inner plate are connected; the rear side panel inner plate and the rear wheel cover inner plate are both connected to the first component, and the frame upper part, the rear side panel inner plate, the rear wheel cover inner plate and the first component form a closed D-annular structure; the second component is located on one side of the first component, and the rear side panel inner plate and the rear wheel cover inner plate are both connected to the second component, and the rear side panel inner plate, the rear wheel cover inner plate and the second component form a closed C-annular structure.

[0006] In some embodiments, the first component includes a D-ring reinforcement plate, a first reinforcement and a first rear floor cross beam; the D-ring reinforcement plate is connected to the inner side of the rear side panel inner panel and the inner side of the rear wheel housing inner panel; the first reinforcement is connected to the inner side of the rear wheel housing inner panel and is connected to the lower end of the D-ring reinforcement plate; the first rear floor cross beam is connected to the lower end of the first reinforcement.

[0007] In some embodiments, the D-ring reinforcement plate and the rear side panel inner plate are welded, and a first cavity is formed between the D-ring reinforcement plate and the rear side panel inner plate; the D-ring reinforcement plate and the rear wheel cover inner plate are welded, and a second cavity is formed between the D-ring reinforcement plate and the rear wheel cover inner plate.

[0008] In some embodiments, the rear vehicle body structure also includes a D-pillar reinforcement plate extension and a retractor mounting bracket, the D-pillar reinforcement plate extension is connected to the outer side of the rear wheel housing inner panel and the outer side of the rear side panel inner panel, the upper end of the D-pillar reinforcement plate is connected to the upper portion of the frame, and a third cavity is formed between the D-pillar reinforcement plate extension and the rear side panel inner panel; the retractor mounting bracket is connected to the rear side panel inner panel.

[0009] In some embodiments, the second component includes a top beam, a C-ring reinforcement plate, a rear floor cross beam extension, a second rear floor cross beam and a C-pillar reinforcement plate; the top beam is connected to the rear side panel inner panel; the C-ring reinforcement plate is connected to the inner side of the rear side panel inner panel and the inner side of the rear wheel housing inner panel, and the C-ring reinforcement plate is spaced apart from the D-ring reinforcement plate; the rear floor cross beam extension is connected to the lower end of the C-ring reinforcement plate and is connected to the rear wheel housing inner panel; the second rear floor cross beam is connected to one end of the rear floor cross beam extension away from the C-ring reinforcement plate, and the C-ring reinforcement plate, the rear wheel housing inner panel and the rear side panel inner panel are all connected to the C-pillar reinforcement plate.

[0010] In some embodiments, the rear vehicle body structure further includes a C-pillar upper reinforcement plate and a rear beam, the upper frame and the top beam are both connected to the C-pillar upper reinforcement plate, and the lower frame and the C-pillar reinforcement plate are both connected to the rear beam.

[0011] In some embodiments, the vehicle body rear structure further includes an inner coil spring seat and a partition, wherein the inner coil spring seat is connected to the outer side of the rear beam, and the partition is welded to the inner side of the rear beam and is located above the inner coil spring seat.

[0012] In some embodiments, the C-ring reinforcement plate and the rear side panel inner plate are welded, and a fourth cavity is formed between the C-ring reinforcement plate and the rear side panel inner plate; the C-ring reinforcement plate and the rear wheel cover inner plate are welded, and a fifth cavity is formed between the C-ring reinforcement plate and the rear wheel cover inner plate.

[0013] In some embodiments, a rear shock absorber bracket is further included, wherein the rear shock absorber bracket is connected to the outer side of the rear wheel housing inner plate, and a sixth cavity is formed between the rear shock absorber bracket and the rear wheel housing inner plate.

[0014] The present invention also provides a vehicle, comprising the vehicle body rear structure according to any one of the above items.

[0015] Compared with the prior art, the vehicle body rear structure of the embodiment of the present invention has the following beneficial effects: by arranging a closed tailgate annular structure on the tailgate frame, the modality of the tailgate frame is improved; by arranging an interconnected tailgate annular structure, a D annular structure and a C annular structure on the vehicle body rear structure, three coordinated annular structures can be simultaneously present on the vehicle body rear structure; the three annular structures can form a more complete, stronger and more three-dimensional frame structure of the vehicle body rear structure, thereby increasing the continuity and integrity of the vehicle body rear structure to improve the overall stiffness of the vehicle body rear structure; three annular force transmission paths can be formed on the vehicle body rear structure respectively through the three annular structures, and the three annular force transmission paths can effectively disperse and withstand external forces from different directions when the vehicle body collides, thereby helping to reduce vehicle body deformation to improve the deformation resistance of the vehicle body rear structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a first schematic diagram of a vehicle body rear structure provided by an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of a vehicle body rear structure forming multiple annular force transmission paths provided by an embodiment of the present invention;

[0018] Figure 3 is a second schematic diagram of a vehicle body rear structure provided by an embodiment of the present invention;

[0019] Figure 4 yes Figure 3 AA cross-sectional view;

[0020] Figure 5 yes Figure 3 A cross-sectional view of BB;

[0021] Figure 6 is a side view of a vehicle body rear structure provided by an embodiment of the present invention;

[0022] Figure 7 yes Figure 6 A cross-sectional view of CC;

[0023] Figure 8 yes Figure 6 A cross-sectional view of DD;

[0024] Fig. 9 It is a bottom schematic diagram of a vehicle body rear structure provided by an embodiment of the present invention.

[0025] In the figure, 1, tailgate frame; 11, upper part of the frame; 12, lower part of the frame; 13, side part of the first frame; 14, side part of the second frame;

[0026] 2. Rear side panel inner panel; 21. First cavity; 22. Third cavity; 23. Fourth cavity; 24. Seventh cavity;

[0027] 3. Rear wheel housing inner panel; 31. Second cavity; 32. Fifth cavity; 33. Sixth cavity;

[0028] 4. Rear shock absorber bracket;

[0029] 5. First assembly; 51. D-ring reinforcement plate; 52. First reinforcement member; 53. First rear floor cross member;

[0030] 6. Second assembly; 61. Top beam; 62. C-ring reinforcement plate; 63. Rear floor beam extension; 64. Second rear floor beam; 65. C-pillar reinforcement plate;

[0031] 71. D-pillar reinforcement plate extension; 72. Retractor mounting bracket;

[0032] 8. C-pillar upper reinforcement plate;

[0033] 9. Rear beam; 91. Inner coil spring seat; 92. Partition plate; 93. Rear floor.

[0034] 100, tailgate ring structure; 200, D ring structure; 300, C ring structure;

[0035] 101, tailgate annular force transmission path; 201, D annular force transmission path; 301, C annular force transmission path. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0042] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0043] like Figure 1-Figure 9 As shown, a preferred vehicle body rear structure of an embodiment of the present invention includes a tailgate frame 1, a rear side wall inner panel 2, a rear wheel housing inner panel 3, a first component 5 and a second component 6.

[0044] The tailgate frame 1 includes a frame upper portion 11, a first frame side portion 13, a frame lower portion 12, and a second frame side portion 14. The frame upper portion 11, the first frame side portion 13, the frame lower portion 12, and the second frame side portion 14 are connected and enclosed to form a closed tailgate annular structure 100; the rear side enclosure inner panel 2 is connected to the frame upper portion 11; the rear wheel housing inner panel 3 is connected to the rear side enclosure inner panel 2; the rear side enclosure inner panel 2 and the rear wheel housing inner panel 3 are both connected to the first component 5, and the frame upper portion 11, the rear side enclosure inner panel 2, the rear wheel housing inner panel 3 and the first component 5 form a closed D-annular structure 200; the second component 6 is located on one side of the first component 5, and the rear side enclosure inner panel 2 and the rear wheel housing inner panel 3 are both connected to the second component 6, and the rear side enclosure inner panel 2, the rear wheel housing inner panel 3 and the second component 6 form a closed C-annular structure 300.

[0045] Based on this technical solution, by providing a closed tailgate annular structure 100 on the tailgate frame 1, the mode of the tailgate frame 1 is improved; by providing the tailgate annular structure 100, the D annular structure 200 and the C annular structure 300 that are interconnected on the rear structure of the vehicle body, three coordinated annular structures can be simultaneously present on the rear structure of the vehicle body; the three annular structures can form a more complete, stronger and more three-dimensional frame structure of the rear structure of the vehicle body, thereby increasing the continuity and integrity of the rear structure of the vehicle body to improve the overall stiffness of the rear structure of the vehicle body; three annular force transmission paths can be formed on the rear structure of the vehicle body respectively through the three annular structures, and the three annular force transmission paths can effectively disperse and withstand external forces from different directions when the vehicle body collides, thereby helping to reduce vehicle body deformation to improve the deformation resistance of the rear structure of the vehicle body.

[0046] It is understandable that Figure 2 The thick solid lines are only simple and rough illustrations of the tailgate annular structure 100, the D annular structure 200 and the C annular structure 300 forming the tailgate annular force transmission path 101, the D annular force transmission path 201 and the C annular force transmission path 301 on the rear structure of the vehicle body respectively. The thick solid lines are not actual components on the rear structure of the vehicle body. Figure 2 The thick solid line in the figure does not constitute any limitation to the technical solution of the present invention.

[0047] The first assembly 5 includes a D-ring reinforcement plate 51, a first reinforcement member 52 and a first rear floor cross member 53; the D-ring reinforcement plate 51 is connected to the inner side of the rear side panel 2 and the inner side of the rear wheel housing inner panel 3; the first reinforcement member 52 is connected to the inner side of the rear wheel housing inner panel 3 and connected to the lower end of the D-ring reinforcement plate 51; the first rear floor cross member 53 is connected to the lower end of the first reinforcement member 52. That is, the rear wheel housing inner panel 3, the rear side panel 2, the D-ring reinforcement plate 51, the first reinforcement member 52, the first rear floor cross member 53, the D-pillar reinforcement plate extension 71 and the frame upper portion 11 are connected to form a D-ring structure 200.

[0048] The D-ring reinforcement plate 51 is welded to the rear side panel inner plate 2, and a first cavity 21 is formed between the D-ring reinforcement plate 51 and the rear side panel inner plate 2; the D-ring reinforcement plate 51 is welded to the rear wheel housing inner plate 3, and a second cavity 31 is formed between the D-ring reinforcement plate 51 and the rear wheel housing inner plate 3. By forming the first cavity 21, the structural rigidity of the side panel in this area can be effectively improved, thereby improving the rear road noise; by forming the second cavity 31, the structural rigidity of the wheel housing in this area can be effectively improved, thereby improving the rear road noise; therefore, by forming the first cavity 21 with the rear side panel inner plate 2 and the second cavity 31 with the D-ring reinforcement plate 51 and the rear wheel housing inner plate 3, the local vehicle body rigidity and the torsional rigidity of the whole vehicle can be effectively improved, thereby improving the road noise.

[0049] The rear structure of the vehicle body also includes a D-pillar reinforcement plate extension 71 and a retractor mounting bracket 72. The D-pillar reinforcement plate extension 71 is connected to the outer side of the rear wheel housing inner panel 3 and the outer side of the rear side panel inner panel 2. The upper end of the D-pillar reinforcement plate is connected to the upper part of the frame 11, and a third cavity 22 is formed between the D-pillar reinforcement plate extension 71 and the rear side panel inner panel 2. The retractor mounting bracket 72 is welded to the rear side panel inner panel 2. In this way, the structural strength of the rear side panel inner panel 2 and the retractor mounting point mode can be improved. By arranging the D-pillar reinforcement plate extension 71 outside the rear side panel inner panel 2, the space inside the vehicle can be saved, which is conducive to the arrangement of the seat belt retractor; at the same time, the D-pillar reinforcement plate extension 71 is welded to the rear side panel inner panel 2 to form the third cavity 22, which can effectively improve the structural rigidity of the side panel in this area, thereby improving the rear road noise.

[0050] The second assembly 6 includes a top beam 61, a C-ring reinforcement plate 62, a rear floor cross beam extension 63, a second rear floor cross beam 64 and a C-pillar reinforcement plate 65; the top beam 61 is connected to the rear side panel inner panel 2; the C-ring reinforcement plate 62 is connected to the inner side of the rear side panel and the inner side of the rear wheel housing inner panel 3, and the C-ring reinforcement plate 62 is spaced apart from the D-ring reinforcement plate 51; the rear floor cross beam extension 63 is connected to the lower end of the C-ring reinforcement plate 62 and connected to the rear wheel housing inner panel 3; the second rear floor cross beam 64 is connected to the end of the rear floor cross beam extension 63 away from the C-ring reinforcement plate 62, and the C-ring reinforcement plate 62, the rear wheel housing inner panel 3 and the rear side panel inner panel 2 are all connected to the C-pillar reinforcement plate 65. That is, the top beam 61, the rear side panel inner panel 2, the rear wheel housing inner panel 3, the C-ring reinforcement plate 62, the rear floor cross beam extension 63, the second rear floor cross beam 64 and the C-pillar reinforcement plate 65 form a closed C-ring structure.

[0051] By forming the first assembly 5 with the D-ring reinforcement plate 51, the first reinforcement member 52 and the first rear floor cross beam 53, and forming the second assembly 6 with the top beam 61, the C-ring reinforcement plate 62, the rear floor cross beam extension member 63, the second rear floor cross beam 64 and the C-pillar reinforcement plate 65, the D-ring structure 200 and the C-ring structure 300 can form two independent annular force transmission paths, thereby effectively dispersing the excitation transmitted from the chassis to the vehicle body. At the same time, by separating the D-ring reinforcement plate 51 and the C-ring reinforcement plate 62, it is helpful to reduce the size of the reinforcement plate and reduce the weight of the whole vehicle.

[0052] The rear structure of the vehicle body further includes a C-pillar upper reinforcement plate 8 and a rear beam 9, the frame upper part 11 and the top beam 61 are both connected to the C-pillar upper reinforcement plate 8, and the frame lower part 12 and the C-pillar reinforcement plate 65 are both connected to the rear beam 9. In this way, the upper part of the C-ring structure 300 can be connected to the tailgate ring structure 100 through the C-pillar upper reinforcement plate 8 and the D-ring structure 200, and the lower part of the C-ring structure 300 can be connected to the lower part of the tailgate ring structure 100 through the rear beam 9 and the lower part of the D-ring structure 200, so that the rear structure of the vehicle body can form a more complete, more solid and more three-dimensional frame structure, which helps to further improve the overall rigidity and anti-deformation ability of the rear structure of the vehicle body.

[0053] The rear structure of the vehicle body also includes an inner coil spring seat 91 and a partition plate 92. The inner coil spring seat 91 is connected to the outer side of the rear beam 9, and the partition plate 92 is welded to the inner side of the rear beam 9 and is located above the inner coil spring seat 91. The structural rigidity of the rear beam 9 can be improved, the deformation of the rear beam 9 under load can be reduced, and the handling and stability of the vehicle can be improved.

[0054] The C-ring reinforcement plate 62 is welded to the rear side panel inner plate 2, and a fourth cavity 23 is formed between the C-ring reinforcement plate 62 and the rear side panel inner plate 2. The C-ring reinforcement plate 62 is welded to the rear wheel housing inner plate 3, and a fifth cavity 32 is formed between the C-ring reinforcement plate 62 and the rear wheel housing inner plate 3. By forming the fifth cavity 32, the structural rigidity of the wheel housing in this area can be effectively improved, thereby improving the rear road noise.

[0055] The rear structure of the vehicle body also includes a rear shock absorber bracket 4, which is welded to the outer side of the rear wheel housing inner plate 3, and a sixth cavity 33 is formed between the rear shock absorber bracket 4 and the rear wheel housing inner plate 3. The sixth cavity 33 can effectively improve the structural rigidity of the wheel housing in this area, thereby improving the rear road noise.

[0056] A seventh cavity 24 is formed between the C-pillar reinforcement plate 65 and the rear side panel inner plate 2. By forming a closed cavity structure with the C-ring reinforcement plate 62, the D-ring reinforcement plate 51, the rear shock absorber bracket 4 and the lower vehicle body (the rear side panel inner plate 2 and the rear wheel housing inner plate 3), the local vehicle body stiffness and the torsional stiffness of the whole vehicle can be effectively improved, and the road noise can be improved.

[0057] The present invention also provides a vehicle, comprising any one of the above-mentioned vehicle body rear structure.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle body rear structure, characterized in that: include: A tailgate frame (1), the tailgate frame (1) comprising a frame upper portion (11), a first frame side portion (13), a frame lower portion (12), and a second frame side portion (14), the frame upper portion (11), the first frame side portion (13), the frame lower portion (12), and the second frame side portion (14) being connected to form a closed tailgate annular structure (100); A rear side panel inner plate (2), the rear side panel inner plate (2) being connected to the frame upper portion (11); A rear wheel housing inner panel (3), wherein the rear wheel housing inner panel (3) is connected to the rear side panel inner panel (2); A first component (5), the rear side panel inner plate (2) and the rear wheel housing inner plate (3) are both connected to the first component (5), and the frame upper portion (11), the rear side panel inner plate (2), the rear wheel housing inner plate (3) and the first component (5) form a closed D-shaped ring structure (200); A second component (6), the second component (6) is located on one side of the first component (5), the rear side inner panel (2) and the rear wheel housing inner panel (3) are both connected to the second component (6), and the rear side inner panel (2), the rear wheel housing inner panel (3) and the second component (6) form a closed C-ring structure (300).

2. A vehicle body rear structure according to claim 1, characterized in that: The first component (5) comprises a D-ring reinforcement plate (51), a first reinforcement member (52) and a first rear floor cross beam (53); the D-ring reinforcement plate (51) is connected to the inner side of the rear side panel inner plate (2) and the inner side of the rear wheel housing inner plate (3); the first reinforcement member (52) is connected to the inner side of the rear wheel housing inner plate (3) and is connected to the lower end of the D-ring reinforcement plate (51); the first rear floor cross beam (53) is connected to the lower end of the first reinforcement member (52).

3. A vehicle body rear structure according to claim 2, characterized in that: The D-ring reinforcement plate (51) is welded to the rear side enclosure inner plate (2), and a first cavity (21) is formed between the D-ring reinforcement plate (51) and the rear side enclosure inner plate (2); the D-ring reinforcement plate (51) is welded to the rear wheel housing inner plate (3), and a second cavity (31) is formed between the D-ring reinforcement plate (51) and the rear wheel housing inner plate (3).

4. The rear vehicle body structure according to claim 2, characterized in that: It also includes a D-pillar reinforcement plate extension (71) and a retractor mounting bracket (72), wherein the D-pillar reinforcement plate extension (71) is connected to the outer side of the rear wheel housing inner plate (3) and the outer side of the rear side panel inner plate (2), the upper end of the D-pillar reinforcement plate is connected to the upper part of the frame (11), and a third cavity (22) is formed between the D-pillar reinforcement plate extension (71) and the rear side panel inner plate (2); the retractor mounting bracket (72) is connected to the rear side panel inner plate (2).

5. A vehicle body rear structure according to any one of claims 1 to 4, characterized in that: The second component (6) comprises a top beam (61), a C-ring reinforcement plate (62), a rear floor cross beam extension (63), a second rear floor cross beam (64) and a C-pillar reinforcement plate (65); the top beam (61) is connected to the rear side inner panel (2); the C-ring reinforcement plate (62) is connected to the inner side of the rear side inner panel (2) and the inner side of the rear wheel housing inner panel (3), and the C-ring reinforcement plate (62) and the D-ring reinforcement plate (51) are arranged at intervals; the rear floor cross beam extension (63) is connected to the lower end of the C-ring reinforcement plate (62) and is connected to the rear wheel housing inner panel (3); the second rear floor cross beam (64) is connected to one end of the rear floor cross beam extension (63) away from the C-ring reinforcement plate (62), and the C-ring reinforcement plate (62), the rear wheel housing inner panel (3) and the rear side inner panel (2) are all connected to the C-pillar reinforcement plate (65).

6. The rear vehicle body structure according to claim 5, characterized in that: It also includes a C-pillar upper reinforcement plate (8) and a rear beam (9), wherein the frame upper portion (11) and the top beam (61) are both connected to the C-pillar upper reinforcement plate (8), and the frame lower portion (12) and the C-pillar reinforcement plate (65) are both connected to the rear beam (9).

7. The rear vehicle body structure according to claim 6, characterized in that: It also includes an inner coil spring seat (91) and a partition plate (92), wherein the inner coil spring seat (91) is connected to the outer side of the rear beam (9), and the partition plate (92) is welded to the inner side of the rear beam (9) and is located above the inner coil spring seat (91).

8. The rear vehicle body structure according to claim 5, characterized in that: The C-ring reinforcement plate (62) is welded to the rear side enclosure inner plate (2), and a fourth cavity (23) is formed between the C-ring reinforcement plate (62) and the rear side enclosure inner plate (2); the C-ring reinforcement plate (62) is welded to the rear wheel cover inner plate (3), and a fifth cavity (32) is formed between the C-ring reinforcement plate (62) and the rear wheel cover inner plate (3).

9. The rear vehicle body structure according to claim 1, characterized in that: It also includes a rear shock absorber bracket (4), which is connected to the outer side of the rear wheel cover inner plate (3), and a sixth cavity (33) is formed between the rear shock absorber bracket (4) and the rear wheel cover inner plate (3).

10. A vehicle, characterized in that: It comprises the vehicle body rear structure according to any one of claims 1-9.

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