Vehicle body rear structure and vehicle

Abstract

The embodiment of the application provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a shock absorber mounting plate, a rear wheel cover, a rear wheel cover connecting plate, a first rear quarter outer reinforcing plate, a C-pillar upper inner plate and a pillar connecting plate. The shock absorber mounting plate and the rear wheel cover connecting plate are connected to the rear wheel cover, and the shock absorber mounting plate is used for mounting a shock absorber. The first rear quarter outer reinforcing plate is connected between the upper end of the rear wheel cover connecting plate and the lower end of the C-pillar upper inner plate. The pillar connecting plate is connected to the upper end of the C-pillar upper inner plate. The shock absorber mounting plate, the rear wheel cover connecting plate, the first rear quarter outer reinforcing plate, the C-pillar upper inner plate and the pillar connecting plate form a first force transmission structure, which can effectively transmit the load of the shock absorber to an upper vehicle body, can improve the strength of the vehicle body rear structure, and can improve the bending and torsional stiffness, the bending and torsional mode and the endurance reliability of the whole vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle body technology, and more particularly to a rear vehicle body structure and vehicle. Background Technology

[0002] Currently, due to the presence of the triangular window, the rear structure of the vehicle body has independent reinforcement structures on the outer side of the rear wheel arch with little structural correlation. This makes it impossible to form a force transmission structure from the rear shock absorber to the upper body, and the lap welds are prone to cracking, which is detrimental to the bending and torsional stiffness and modal performance of the entire vehicle. Utility Model Content

[0003] This application provides a rear structure and vehicle body, which aims to improve the problem of the inability to form a force transmission structure from the rear shock absorber to the upper body.

[0004] This application provides a rear structure of a vehicle body, including a shock absorber mounting plate, a rear wheel cover, a rear wheel cover connecting plate, a first rear side outer reinforcing plate, an inner plate on the C-pillar, and a pillar connecting plate. The shock absorber mounting plate is connected to the rear wheel cover by the rear wheel cover connecting plate, and the shock absorber mounting plate is used to mount the shock absorber. The first rear side outer reinforcing plate is connected between the upper end of the rear wheel arch connecting plate and the lower end of the inner plate of the C-pillar. The pillar connecting plate is connected to the upper end of the inner plate of the C-pillar. The shock absorber mounting plate, the rear wheel arch connecting plate, the first rear side outer reinforcing plate, the inner plate of the C-pillar and the pillar connecting plate form a first force transmission structure.

[0005] In this embodiment, both the shock absorber mounting plate and the rear wheel arch connecting plate are mounted on the rear wheel arch. After the shock absorber is mounted on the shock absorber mounting plate, the load generated when the shock absorber is working can be transmitted to the rear wheel arch and the rear wheel arch connecting plate. Thus, through the overlap of the shock absorber mounting plate, the rear wheel arch connecting plate, the first rear side outer reinforcing plate, the inner plate on the C-pillar, and the pillar connecting plate, the load of the shock absorber can be effectively transmitted to the upper vehicle body, improving the strength of the rear structure of the vehicle body. At the same time, the upper and lower vehicle bodies are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes, and durability and reliability of the entire vehicle.

[0006] Optionally, in the left-right direction of the vehicle, the shock absorber mounting plate and the rear wheel arch connecting plate are arranged opposite each other, with the shock absorber mounting plate located on the outer side of the rear wheel arch and the rear wheel arch connecting plate located on the inner side of the rear wheel arch. By arranging the shock absorber mounting plate and the rear wheel arch connecting plate opposite each other, a "left-right bracing" can be formed on the inner and outer sides of the rear wheel arch, thereby strengthening the structure of the rear wheel arch.

[0007] Optionally, a first cavity is formed between the shock absorber mounting plate and the rear wheel cover, and a second cavity is formed between the rear wheel cover connecting plate and the rear wheel cover, which can significantly enhance the overall bending and torsional resistance.

[0008] Optionally, it also includes a rear sill inner panel and a lower C-pillar inner panel, the rear sill inner panel and the lower C-pillar inner panel are installed on the rear wheel arch, the lower end of the rear sill inner panel is connected to the lower end of the lower C-pillar inner panel, and the upper end of the lower C-pillar inner panel is connected to the upper C-pillar inner panel; The rear sill inner panel, the lower inner panel of the C-pillar, the upper inner panel of the C-pillar, and the pillar connecting plate form a second force transmission structure, which can transfer the load of the chassis rear suspension mounting point to the upper vehicle body.

[0009] Optionally, it also includes a spring tower base, a rear wheel arch reinforcement plate, a rear side wall inner reinforcement plate, and an upper inner plate of the D-pillar. The spring tower base and the rear wheel arch reinforcement plate are installed on the rear wheel arch. The rear side wall inner reinforcement plate is connected between the upper end of the rear wheel arch reinforcement plate and the upper inner plate of the D-pillar. The pillar connecting plate is connected between the upper inner plate of the C-pillar and the upper inner plate of the D-pillar. The spring tower, the rear wheel arch reinforcement plate, the rear side inner reinforcement plate, and the upper inner plate of the D-pillar form a third force transmission structure, which can transfer the load of the spring tower to the upper vehicle body.

[0010] Optionally, the rear structure of the vehicle body also includes a strut tower reinforcement bracket. The spring strut tower is connected to the strut tower reinforcement bracket. In the left-right direction of the vehicle, the strut tower reinforcement bracket is disposed opposite to the rear wheel arch reinforcement plate. The strut tower reinforcement bracket is disposed on the outer side of the rear wheel arch, and the rear wheel arch reinforcement plate is disposed on the inner side of the rear wheel arch. By the strut tower reinforcement bracket and the rear wheel arch reinforcement plate being disposed opposite to each other, a "left-right support" can be formed on the inner and outer sides of the rear wheel arch, thereby strengthening the structure of the rear wheel arch.

[0011] Optionally, it also includes a second rear side outer reinforcing plate, which is installed on the rear side inner reinforcing plate, and the lower end of the second rear side outer reinforcing plate is connected to the rear wheel arch. By installing the second rear side outer reinforcing plate on the rear side inner reinforcing plate, a double-layer reinforcing structure can be formed. The overlapping of the two layers can significantly increase the overlap strength of the third force transmission structure and improve stiffness and stability.

[0012] Optionally, the spring tower base, the rear wheel arch connecting plate, the first rear side outer reinforcing plate, the inner plate on the C-pillar, and the pillar connecting plate form a fourth force transmission structure, which can transfer the load of the spring tower base to the upper vehicle body. The spring tower base does not rely on a single path for load transmission, thus improving the load transmission efficiency and reducing the possibility of weld cracking and structural failure due to overload.

[0013] Optionally, it also includes a rear side wall transverse reinforcing plate, through which the first force transmission structure, the second force transmission structure, the third force transmission structure and the fourth force transmission structure are connected. The front end of the rear side lateral reinforcement plate is connected to the inner panel of the C-pillar, and the rear end of the rear side lateral reinforcement plate is connected to the inner panel of the D-pillar. Through the intersection and overlap of the rear side lateral reinforcement plate with multiple force-transmitting structures, the entire rear structure of the vehicle body forms a cage-like structure, significantly improving the rear's resistance to collisions.

[0014] Optionally, the system also includes a rear floor frame, to which both the rear wheel arch and the rear wheel arch connecting plate are connected. By attaching the rear wheel arch to the rear floor frame, the structure of the rear wheel arch can be strengthened.

[0015] Optionally, the first force transmission structure includes a first left-side force transmission structure and a first right-side force transmission structure. The first left-side force transmission structure, the rear floor frame, and the first right-side force transmission structure form a first ring structure, which can construct a ring-shaped load-bearing path. Whether the load is input from the damper mounting plate of the first left-side force transmission structure or from the damper mounting plate of the first right-side force transmission structure, it can be distributed along the ring path, which can optimize the load transmission path and thus improve the load transmission efficiency.

[0016] Optionally, the second force transmission structure includes a second left force transmission structure and a second right force transmission structure, wherein the second left force transmission structure, the rear floor frame, and the second right force transmission structure form a second ring structure. The first annular structure and the second annular structure together form a first herringbone double-ring structure. The second annular structure optimizes the load transfer path. The first herringbone double-ring structure formed by the first and second annular structures allows the force transmission structure of the rear suspension mounting point of the chassis to be connected with the force transmission structure of the shock absorber, forming a seamless closed-loop path, which can improve the bending and torsional stiffness and modal performance of the vehicle body.

[0017] Optionally, the third force transmission structure includes a third left-side force transmission structure and a third right-side force transmission structure, wherein the third left-side force transmission structure, the rear floor frame, and the third right-side force transmission structure form a third ring structure. Through the third ring structure, a ring-shaped load-bearing path can be constructed. Whether the load is input from the spring tower of the third left-side force transmission structure or from the spring tower of the third right-side force transmission structure, it can be distributed along the ring path, optimizing the load transmission path and thus improving load transmission efficiency.

[0018] Optionally, the fourth force transmission structure includes a fourth left-side force transmission structure and a fourth right-side force transmission structure, wherein the fourth left-side force transmission structure, the rear floor frame, and the fourth right-side force transmission structure form a fourth ring structure. The third and fourth ring structures together form a second herringbone double-ring structure. The fourth ring structure optimizes the load transfer path. The second herringbone double-ring structure, formed by the third and fourth ring structures, connects the force transmission structures of the two spring towers, creating a seamless closed-loop path, which improves the vehicle's bending and torsional stiffness and modal performance.

[0019] Optionally, the rear floor frame includes a left rear longitudinal beam, a right rear longitudinal beam, a first rear floor crossbeam, a second rear floor crossbeam, a third rear floor crossbeam, and a fourth rear floor crossbeam, wherein the first rear floor crossbeam, the second rear floor crossbeam, the third rear floor crossbeam, and the fourth rear floor crossbeam are connected between the left rear longitudinal beam and the right rear longitudinal beam. The hollow interiors of the left rear longitudinal beam, the right rear longitudinal beam, the first rear floor crossbeam, the second rear floor crossbeam, the third rear floor crossbeam, and the fourth rear floor crossbeam ensure continuous stiffness and high stability of the rear floor frame, greatly improving the vehicle body's bending and torsional stiffness, bending and torsional modes, and rear suspension mounting point stiffness.

[0020] This application provides a vehicle including a rear body structure as described in any of the preceding claims.

[0021] In this embodiment, by overlapping the shock absorber mounting plate, the rear wheel arch connecting plate, the first rear side outer reinforcing plate, the inner plate on the C-pillar and the pillar connecting plate, the load of the shock absorber can be effectively transferred to the upper vehicle body, which can improve the strength of the rear structure of the vehicle body. At the same time, the upper and lower vehicle bodies are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes and durability and reliability of the whole vehicle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the rear structure of a vehicle body provided in one embodiment of this application; Figure 2 This is a side view of the rear structure of a vehicle body provided in one embodiment of this application; Figure 3 This is a schematic diagram of a double herringbone multi-channel force transmission structure for the rear structure of a vehicle body provided in an embodiment of this application; Figure 4 This is a schematic cross-sectional view of the rear structure of a vehicle body provided in one embodiment of this application. Figure 1 ; Figure 5 This is a schematic cross-sectional view of the rear structure of a vehicle body provided in one embodiment of this application. Figure 2 ; Figure 6 yes Figure 4 Schematic diagram of the cross section along the AA direction; Figure 7 yes Figure 4Cross-sectional schematic diagram along the BB direction; Figure 8 yes Figure 4 A cross-sectional view along the CC direction; Figure 9 yes Figure 4 A schematic cross-sectional view along the DD direction; Figure 10 yes Figure 5 A cross-sectional view along the EE direction; Figure 11 This is a schematic diagram of a rear floor frame provided in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures: 100. Rear structure of the vehicle body; 1. Rear floor frame; 101. Left rear longitudinal beam; 102. Right rear longitudinal beam; 103. First rear floor crossbeam; 104. Second rear floor crossbeam; 105. Third rear floor crossbeam; 106. Fourth rear floor crossbeam; 2. Shock absorber mounting plate; 3. Rear wheel arch; 4. Rear wheel arch connecting plate; 5. First rear side outer reinforcement plate; 6. Upper inner plate of C-pillar; 7. Column connecting plate; 8. Rear sill inner plate; 9. Lower inner plate of C-pillar; 10. Spring tower base; 11. Rear wheel arch reinforcement plate; 12. Rear side inner reinforcement plate; 13. Upper inner plate of D-pillar; 14. Tower base reinforcement bracket; 15. Second rear side outer reinforcement plate; 16. Rear side transverse reinforcement plate; a. First ring structure; b. Second ring structure; c. Third ring structure; d. Fourth ring structure. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] like Figures 1 to 11 As shown, this application embodiment provides a rear structure 100 of a vehicle body, including a shock absorber mounting plate 2, a rear wheel cover 3, a rear wheel cover connecting plate 4, a first rear side outer reinforcing plate 5, an inner plate on the C-pillar 6, and a pillar connecting plate 7. The shock absorber mounting plate 2 and the rear wheel cover connecting plate 4 are connected to the rear wheel cover 3. The shock absorber mounting plate 2 is used to install shock absorbers.

[0026] The first rear side outer reinforcing plate 5 is connected between the upper end of the rear wheel arch connecting plate 4 and the lower end of the C-pillar inner plate 6. The pillar connecting plate 7 is connected to the upper end of the C-pillar inner plate 6. The shock absorber mounting plate 2, the rear wheel arch connecting plate 4, the first rear side outer reinforcing plate 5, the C-pillar inner plate 6 and the pillar connecting plate 7 form the first force transmission structure.

[0027] In this embodiment, both the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 are mounted on the rear wheel arch 3. After the shock absorber is mounted on the shock absorber mounting plate 2, the load generated when the shock absorber is working can be transmitted to the rear wheel arch 3 and the rear wheel arch connecting plate 4. Thus, through the overlap of the shock absorber mounting plate 2, the rear wheel arch connecting plate 4, the first rear side outer reinforcing plate 5, the inner plate 6 on the C-pillar, and the pillar connecting plate 7, the load of the shock absorber can be effectively transmitted to the upper body, improving the strength of the rear structure 100 of the vehicle body. At the same time, the upper and lower body are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes, and durability and reliability of the whole vehicle.

[0028] As an example, the rear structure 100 of the vehicle body includes a shock absorber mounting plate 2, a rear wheel arch 3, a rear wheel arch connecting plate 4, a first rear side panel outer reinforcing plate 5, an inner C-pillar panel 6, and a pillar connecting plate 7. Both the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 are connected to the rear wheel arch 3. The shock absorber mounting plate 2 can transmit loads upwards, and the rear wheel arch connecting plate 4 can also transmit loads upwards to the first rear side panel outer reinforcing plate 5. By connecting both the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 to the rear wheel arch 3, it not only helps to transmit loads to the upper part of the vehicle body but also strengthens the rear wheel arch 3, thereby improving the overall bending and torsional stiffness and NVH performance of the rear structure 100.

[0029] The lower end of the first rear side outer reinforcing plate 5 is connected to the upper end of the rear wheel arch connecting plate 4, and the upper end of the first rear side outer reinforcing plate 5 is connected to the lower end of the C-pillar inner plate 6. The transmission paths of both the first rear side outer reinforcing plate 5 and the C-pillar inner plate 6 are upward, and the pillar connecting plate 7 is located on the upper part of the vehicle body. This allows the load generated by the shock absorber during operation to be transferred from the lower rear of the vehicle body to the upper part through the first force transmission structure, reducing the possibility of cracking at the lap weld points.

[0030] In one embodiment, such as Figure 1 , Figure 7 As shown, in the left-right direction of the vehicle, the shock absorber mounting plate 2 and the rear wheel cover connecting plate 4 are arranged opposite to each other. The shock absorber mounting plate 2 is located on the outer side of the rear wheel cover 3, and the rear wheel cover connecting plate 4 is located on the inner side of the rear wheel cover 3.

[0031] By setting the shock absorber mounting plate 2 opposite to the rear wheel cover connecting plate 4, a "left-right support" can be formed on the inner and outer sides of the rear wheel cover 3. The shock absorber load is distributed to multiple paths, and the welding points and plates are subjected to uniform stress, which can improve the rigidity of the rear structure 100 of the vehicle body, thereby strengthening the structure of the rear wheel cover 3 and improving the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0032] In one embodiment, a first cavity is formed between the shock absorber mounting plate 2 and the rear wheel cover 3, and a second cavity is formed between the rear wheel cover connecting plate 4 and the rear wheel cover 3. The deformation resistance characteristics of the first and second cavities significantly enhance the overall bending and torsional resistance.

[0033] As an example, such as Figure 7 As shown, the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 are arranged opposite to each other, and the shapes of the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 are not completely fitted to the rear wheel arch 3. At least a portion of the shock absorber mounting plate 2 protrudes or arches away from the rear wheel arch 3, thus defining a first cavity between the two after the shock absorber mounting plate 2 and the rear wheel arch 3 are connected. Similarly, at least a portion of the rear wheel arch connecting plate 4 protrudes or arches away from the rear wheel arch 3, thus defining a second cavity between the two after the shock absorber mounting plate 2 and the rear wheel arch 3 are connected.

[0034] In one embodiment, such as Figure 1 As shown, the rear structure 100 of the vehicle body also includes a rear sill inner panel 8 and a lower C-pillar inner panel 9. The rear sill inner panel 8 and the lower C-pillar inner panel 9 are installed on the rear wheel arch 3. The lower end of the rear sill inner panel 8 is connected to the lower end of the lower C-pillar inner panel 9, and the upper end of the lower C-pillar inner panel 9 is connected to the upper C-pillar inner panel 6. The rear sill inner panel 8, the lower C-pillar inner panel 9, the upper C-pillar inner panel 6, and the pillar connecting plate 7 form a second force transmission structure.

[0035] The rear sill inner panel 8 is arranged along the front-rear direction of the vehicle body and serves as the lateral load-bearing foundation for the rear of the vehicle. The lower C-pillar inner panel 9 is mounted on the rear wheel arch 3 and is connected to the lower end of the upper C-pillar inner panel 6, forming longitudinal support through the lower C-pillar inner panel 9 and the upper C-pillar inner panel 6. The upper C-pillar inner panel 6 can extend upward to the roof and connect with the pillar connecting plate 7. Through the overlap of the four rear sill inner panels 8, lower C-pillar inner panel 9, upper C-pillar inner panel 6, and pillar connecting plate 7, a second force transmission structure is formed, which can transfer the load of the chassis rear suspension mounting point to the upper body, helping to improve the strength of the rear structure 100 of the vehicle body. At the same time, the upper and lower body are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes, and durability and reliability of the entire vehicle.

[0036] As an example, the rear structure 100 also includes a rear sill inner panel 8 and a lower C-pillar inner panel 9. The rear sill inner panel 8 is arranged along the front-rear direction of the vehicle and is installed inside the rear wheel arch 3. The rear end of the rear sill inner panel 8 is connected to the lower end of the lower C-pillar inner panel 9. The upper end of the lower C-pillar inner panel 9 is connected to the upper C-pillar inner panel 6. The load of the rear suspension mounting point can be transferred to the upper body through the second force transmission structure.

[0037] In one embodiment, such as Figure 1 , Figure 3As shown, the rear structure 100 of the vehicle body also includes a spring tower 10, a rear wheel arch reinforcement plate 11, a rear side wall inner reinforcement plate 12, and an upper inner plate 13 on the D-pillar. The spring tower 10 and the rear wheel arch reinforcement plate 11 are installed on the rear wheel arch 3. The rear side wall inner reinforcement plate 12 is connected between the upper end of the rear wheel arch reinforcement plate 11 and the upper inner plate 13 on the D-pillar. The pillar connecting plate 7 is connected between the upper inner plate 6 on the C-pillar and the upper inner plate 13 on the D-pillar. The spring tower 10, the rear wheel arch reinforcement plate 11, the rear side wall inner reinforcement plate 12, and the upper inner plate 13 on the D-pillar form a third force transmission structure.

[0038] In this embodiment, the spring tower 10 and the rear wheel arch reinforcement plate 11 are installed on the rear wheel arch 3. The load of the spring tower 10 can be transferred to the rear wheel arch 3 and the rear wheel arch reinforcement plate 11. Through the overlap of the spring tower 10, the rear wheel arch reinforcement plate 11, the rear side inner reinforcement plate 12 and the inner plate 13 on the D-pillar, the load of the spring tower 10 can be transferred to the upper vehicle body, which can improve the strength of the rear structure 100 of the vehicle body. At the same time, the upper and lower vehicle bodies are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes and durability and reliability of the whole vehicle.

[0039] Among them, such as Figure 8 As shown, the spring tower base 10 has a closed cavity, which greatly improves the joint strength between the spring tower base 10 and the rear wheel cover 3. Furthermore, due to the presence of the closed cavity, the lap strength and stiffness stability of the third force transmission structure are greatly improved, reducing the risk of sheet metal and weld cracking.

[0040] As an example, such as Figure 1 , Figure 8 As shown, the rear structure 100 of the vehicle body also includes a spring tower 10, a rear wheel arch reinforcement plate 11, a rear side panel inner reinforcement plate 12, and an upper inner plate 13 on the D-pillar. The spring tower 10 is connected to the lower part of the rear wheel arch 3, and the load of the spring tower 10 can be transferred to the rear wheel arch 3 above it. The rear wheel arch reinforcement plate 11 can also transfer the load upwards. After both the spring tower 10 and the rear wheel arch reinforcement plate 11 are installed on the rear wheel arch 3, the rear wheel arch 3 can be strengthened by the rear wheel arch reinforcement plate 11, and the load of the spring tower 10 can also be transferred upwards, thereby improving the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0041] The lower end of the rear side panel inner reinforcing plate 12 is connected to the upper end of the rear wheel arch reinforcing plate 11, and the upper end of the rear side panel inner reinforcing plate 12 is connected to the upper inner plate 13 of the D-pillar. The connection point of the upper end of the rear side panel inner reinforcing plate 12 to the upper inner plate 13 of the D-pillar is located in the middle of the upper inner plate 13. The load transfer paths of the rear side panel inner reinforcing plate 12 and the rear wheel arch reinforcing plate 11 are both upward, and the upper inner plate 13 of the D-pillar is close to the upper part of the vehicle body. This allows the load of the spring tower 10 to be transferred from the lower rear part of the vehicle body to the upper part through the rear wheel arch reinforcing plate 11, the rear side panel inner reinforcing plate 12, and the upper inner plate 13 of the D-pillar in sequence, thereby reducing the possibility of cracking at the lap weld points.

[0042] In this example, the upper end of the inner panel 6 on the C-pillar and the upper end of the inner panel 13 on the D-pillar are both connected to the column connecting plate 7, and the rear side inner reinforcing plate 12 is connected to the middle position of the inner panel 13 on the D-pillar.

[0043] In one embodiment, such as Figure 1 , Figure 8 As shown, the rear structure 100 of the vehicle body also includes a tower support reinforcement bracket 14. The spring tower 10 is connected to the tower support reinforcement bracket 14. In the left-right direction of the vehicle, the tower support reinforcement bracket 14 and the rear wheel cover reinforcement plate 11 are arranged opposite to each other. The tower support reinforcement bracket 14 is located on the outer side of the rear wheel cover 3, and the rear wheel cover reinforcement plate 11 is located on the inner side of the rear wheel cover 3.

[0044] The spring tower 10 can be strengthened by the tower base reinforcement bracket 14, and the tower base reinforcement bracket 14 is arranged opposite to the rear wheel cover reinforcement plate 11, which can form "left and right support" on the inner and outer sides of the rear wheel cover 3. The load of the spring tower 10 is distributed to multiple paths, which improves the rigidity of the rear structure 100 of the vehicle body, strengthens the structure of the rear wheel cover 3, and improves the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0045] As an example, the rear structure 100 also includes a strut tower reinforcement bracket 14, which is connected to the upper part of the mount and to the outer side of the rear wheel arch 3. Figure 8 As shown, the strut tower brace 14 and the rear wheel arch reinforcement plate 11 are not completely fitted to the rear wheel arch 3. At least a portion of the strut tower brace 14 can protrude or arch away from the rear wheel arch 3, so that when the strut tower brace 14 and the rear wheel arch 3 are connected, a closed cavity can be defined between them, thereby improving the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0046] At least a portion of the rear wheel arch reinforcement plate 11 can protrude or arch in a direction away from the rear wheel arch 3, so that when the rear wheel arch reinforcement plate 11 and the rear wheel arch 3 are connected, a closed cavity can be defined between them, thereby improving the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0047] As an example, such as Figure 1 , Figure 8 As shown, the rear structure 100 of the vehicle body also includes a spring tower 10, a rear wheel arch reinforcement plate 11, a rear side panel inner reinforcement plate 12, an upper inner plate of the D-pillar 13, and a tower reinforcement bracket 14. Both the tower reinforcement bracket 14 and the spring tower 10 are connected to the rear wheel arch 3. The tower reinforcement bracket 14 is connected above the spring tower 10, and the tower reinforcement bracket 14 and the rear wheel arch reinforcement plate 11 are arranged opposite to each other.

[0048] In this example, the spring tower 10 has a closed cavity. Above the spring tower 10, a closed cavity structure is formed by the tower reinforcement bracket 14 and the rear wheel arch reinforcement plate 11, which can further improve the overall bending and torsional stiffness and NVH performance of the rear structure 100 of the vehicle body.

[0049] In one embodiment, such as Figure 1 , Figure 8 As shown, the rear structure 100 of the vehicle body also includes a second rear side outer reinforcing plate 15, which is installed on the rear side inner reinforcing plate 12, and the lower end of the second rear side outer reinforcing plate 15 is connected to the rear wheel cover 3.

[0050] By installing the second rear side outer reinforcing plate 15 on the rear side inner reinforcing plate 12, a double-layer reinforcing structure can be formed. The overlapping of the two can greatly increase the overlap strength of the third force transmission structure and improve stiffness and stability.

[0051] The second rear side outer reinforcing plate 15 is located outside the rear side inner reinforcing plate 12, and the lower end of the second rear side outer reinforcing plate 15 is connected to the rear wheel cover 3. This allows the load transfer of the spring tower 10 to be distributed to the second rear side outer reinforcing plate 15 and the rear side inner reinforcing plate 12, making the load transfer more uniform and avoiding excessive local stress caused by load concentration in a single component, thereby strengthening the torsional and impact resistance of the rear of the vehicle body.

[0052] In one embodiment, such as Figure 1 , Figure 3 As shown, the spring tower base 10, the rear wheel cover connecting plate 4, the first rear side outer reinforcing plate 5, the inner plate on the C-pillar 6, and the column connecting plate 7 form the fourth force transmission structure.

[0053] The spring tower 10 and the rear wheel cover connecting plate 4 are both connected to the rear wheel cover 3. The spring tower 10, the rear wheel cover connecting plate 4, the first rear side outer reinforcing plate 5, the inner plate on the C-pillar 6 and the column connecting plate 7 overlap to form a fourth force transmission structure, which can transfer the load of the spring tower 10 to the upper vehicle body.

[0054] As an example, the spring tower base 10, the rear wheel arch reinforcement plate 11, the rear side inner reinforcement plate 12, and the D-pillar upper inner plate 13 form a third force transmission structure, and the spring tower base 10, the rear wheel arch connecting plate 4, the first rear side outer reinforcement plate 5, the C-pillar upper inner plate 6, and the pillar connecting plate 7 form a fourth force transmission structure.

[0055] Both the rear wheel arch reinforcement plate 11 and the rear wheel arch connecting plate 4 are connected to the rear wheel arch 3 and are spaced apart along the front-rear direction of the vehicle. When the load of the spring tower 10 is transmitted upward, the rear wheel arch 3 can divide the load into two parts. One part is transmitted to the upper body through the overlap of the spring tower 10, the rear wheel arch reinforcement plate 11, the inner reinforcement plate 12 of the rear side wall, and the inner plate 13 of the D-pillar. The other part is transmitted to the upper body through the overlap of the spring tower 10, the rear wheel arch connecting plate 4, the outer reinforcement plate 5 of the first rear side wall, the inner plate 6 of the C-pillar, and the pillar connecting plate 7. The load transmission efficiency of the spring tower 10 is improved, and it does not rely on a single path for transmission, reducing the possibility of weld cracking and structural failure due to overload.

[0056] In one embodiment, such as Figure 1 , Figure 2 As shown, the rear structure 100 of the vehicle body also includes a rear side wall transverse reinforcement plate 16. The first force transmission structure, the second force transmission structure, the third force transmission structure and the fourth force transmission structure are connected through the rear side wall transverse reinforcement plate 16. The front end of the rear side wall transverse reinforcement plate 16 is connected to the inner panel 6 on the C-pillar, and the rear end of the rear side wall transverse reinforcement plate 16 is connected to the inner panel 13 on the D-pillar.

[0057] The rear side transverse reinforcement plate 16 can intersect and overlap with multiple force transmission structures, making the force transmission structures of the entire rear structure 100 of the vehicle body interconnected and diversifying the force transmission paths. The entire rear structure 100 of the vehicle body has a cage-like structure, which greatly improves the ability of the rear of the vehicle body to resist collisions.

[0058] As an example, the rear structure 100 of the vehicle body also includes a rear side lateral reinforcement plate 16, which is arranged along the longitudinal direction of the vehicle. The front end of the rear side lateral reinforcement plate 16 overlaps with the lower end of the inner panel 6 on the C-pillar, allowing the rear side lateral reinforcement plate 16 to intersect and overlap with the first force transmission structure, the second force transmission structure, and the fourth force transmission structure. Specifically, the rear side lateral reinforcement plate 16 intersects with the inner panel 6 on the C-pillar, and the upper end of the first rear side outer reinforcement plate 5 is located at this intersection. Both the rear side lateral reinforcement plate 16 and the inner panel 6 on the C-pillar are connected to the first rear side outer reinforcement plate 5.

[0059] The rear end of the rear side transverse reinforcement plate 16 is connected to the lower end of the inner panel 13 on the D pillar, and the upper end of the second rear side outer reinforcement plate 15 is connected to the rear side transverse reinforcement plate 16, so that the rear side transverse reinforcement plate 16 can intersect and overlap with the third force transmission structure. The rear side transverse reinforcement plate 16 constructs a connection structure from back to front, realizing the interconnection of the entire rear force transmission structure of the vehicle body.

[0060] In one embodiment, such as Figure 1 , Figure 11 As shown, the rear structure 100 of the vehicle body also includes a rear floor frame 1, and the rear wheel arch 3 and the rear wheel arch connecting plate 4 are all connected to the rear floor frame 1. By attaching the rear wheel arch 3 to the rear floor frame 1, the structure of the rear wheel arch 3 can be strengthened.

[0061] Among them, the lower part of the rear wheel cover 3 overlaps with the rear floor frame 1, the lower end of the rear wheel cover connecting plate 4 can overlap with the rear floor frame 1, the lower end of the rear wheel cover reinforcing plate 11 can overlap with the rear floor frame 1, and the rear sill inner plate 8 can overlap with the rear floor frame 1.

[0062] In one embodiment, such as Figure 3 As shown, the first force transmission structure includes a first left-side force transmission structure and a first right-side force transmission structure. The first left-side force transmission structure, the rear floor frame 1, and the first right-side force transmission structure form a first annular structure a. Through the first annular structure a, a circular load-bearing path can be constructed. Whether the load is input from the damper mounting plate 2 of the first left-side force transmission structure or from the damper mounting plate 2 of the first right-side force transmission structure, it can be distributed along the annular path, optimizing the load transmission path and thus improving load transmission efficiency. Furthermore, the first annular structure a can also distribute torsional stress along the annular path, strengthening the torsional stiffness of the rear of the vehicle body.

[0063] The first left-side force transmission structure is connected to the left side of the rear floor frame 1, and the first right-side force transmission structure is connected to the right side of the rear floor frame 1. The first left-side force transmission structure and the first right-side force transmission structure are symmetrical in the left-right direction of the vehicle. Here, "left" and "right" refer to the left-right direction of the vehicle, and their meaning is the same in subsequent embodiments, so it will not be repeated.

[0064] In one embodiment, such as Figure 3 As shown, the second force transmission structure includes a second left force transmission structure and a second right force transmission structure. The second left force transmission structure, the rear floor frame 1, and the second right force transmission structure form a second ring structure b. The first ring structure a and the second ring structure b together form a first herringbone double ring structure.

[0065] The second annular structure b creates a circular load-bearing path. Whether the load is input from the rear sill inner plate 8 of the second left-side force transmission structure or the rear sill inner plate 8 of the second right-side force transmission structure, it can be distributed along the annular path, optimizing the load transfer path and improving load transfer efficiency. Furthermore, the second annular structure can also distribute torsional stress along the annular path, strengthening the torsional stiffness of the rear of the vehicle body.

[0066] By forming a first herringbone double-ring structure together with the first ring structure a and the second ring structure b, the force transmission structure of the rear suspension mounting point of the chassis can be connected with the force transmission structure of the shock absorber, forming a closed loop path that can improve the bending and torsional stiffness and modal performance of the vehicle body.

[0067] The second left-side force transmission structure is connected to the left side of the rear floor frame 1, and the second right-side force transmission structure is connected to the right side of the rear floor frame 1. The second left-side and second right-side force transmission structures are symmetrical in the left-right direction of the vehicle. The first annular structure a and the second annular structure b overlap at the inner panel 6 of the C-pillar and the pillar connecting plate 7.

[0068] In one embodiment, such as Figure 3 As shown, the third force transmission structure includes a third left force transmission structure and a third right force transmission structure. The third left force transmission structure, the rear floor frame 1, and the third right force transmission structure form a third ring structure c.

[0069] The third annular structure c creates a circular load-bearing path. Whether the load is input from the spring tower 10 of the third left-side force transmission structure or the spring tower 10 of the third right-side force transmission structure, it can be distributed along the annular path, optimizing the load transfer path and thus improving load transfer efficiency. Furthermore, the third annular structure can also distribute torsional stress along the annular path, strengthening the torsional stiffness of the rear of the vehicle body.

[0070] The third left-side force transmission structure is connected to the left side of the rear floor frame 1, and the third right-side force transmission structure is connected to the right side of the rear floor frame 1. The third left-side force transmission structure and the third right-side force transmission structure are symmetrical in the left-right direction of the vehicle.

[0071] In one embodiment, such as Figure 3 As shown, the fourth force transmission structure includes a fourth left-side force transmission structure and a fourth right-side force transmission structure. The fourth left-side force transmission structure, the rear floor frame 1, and the fourth right-side force transmission structure form a fourth ring structure d; the third ring structure c and the fourth ring structure d together form a second herringbone double ring structure.

[0072] The fourth annular structure d creates a circular load-bearing path. Whether the load is input from the spring tower 10 of the fourth left-side force transmission structure or from the spring tower 10 of the fourth right-side force transmission structure, it can be distributed along the annular path, optimizing the load transfer path and thus improving load transfer efficiency. Furthermore, the annular structure can also distribute torsional stress along the ring, strengthening the torsional stiffness of the rear of the vehicle body.

[0073] The second herringbone double-ring structure is formed by the third ring structure c and the fourth ring structure d, which enables the force transmission structure of the two spring towers 10 to be connected and form a closed loop path, thereby improving the bending and torsional stiffness and modal performance of the vehicle body.

[0074] The fourth left-side force transmission structure is connected to the left side of the rear floor frame 1, and the fourth right-side force transmission structure is connected to the right side of the rear floor frame 1. The fourth left-side and fourth right-side force transmission structures are symmetrical in the left-right direction of the vehicle. The third annular structure c and the fourth annular structure d coincide at the spring tower 10.

[0075] As an example, the first ring structure a and the second ring structure b together form a first herringbone double ring structure, and the third ring structure c and the fourth ring structure d together form a second herringbone double ring structure.

[0076] Through the first herringbone double-ring structure and the second herringbone double-ring structure, the entire rear of the vehicle body forms a double herringbone multi-channel force transmission structure. The structure is continuous and interconnected, and the force transmission path is diversified. It constructs a continuous multi-channel force transmission structure from the spring tower 10 to the upper body, the rear shock absorber to the upper body, and the rear suspension mounting point to the upper body. This allows the impact load of the rear shock absorber and the rear spring tower 10 to be effectively transferred to the upper body, solving the problem of excessive impact force concentration and cracking of the lap weld. It improves the durability and reliability of the vehicle body. The entire rear structure 100 of the vehicle body presents a cage-like structure, which greatly improves the bending and torsional stiffness and modal performance of the entire vehicle body.

[0077] In one embodiment, such as Figure 11As shown, the rear floor frame 1 includes a left rear longitudinal beam 101, a right rear longitudinal beam 102, a first rear floor crossbeam 103, a second rear floor crossbeam 104, a third rear floor crossbeam 105, and a fourth rear floor crossbeam 106. The first rear floor crossbeam 103, the second rear floor crossbeam 104, the third rear floor crossbeam 105, and the fourth rear floor crossbeam 106 are connected between the left rear longitudinal beam 101 and the right rear longitudinal beam 102. The left rear longitudinal beam 101, the right rear longitudinal beam 102, the first rear floor crossbeam 103, the second rear floor crossbeam 104, the third rear floor crossbeam 105, and the fourth rear floor crossbeam 106 are hollow inside, which makes the rear floor frame 1 have continuous stiffness and high stability. There is no need to arrange reinforcing structures in the crossbeams and longitudinal beams. The structure is simplified, the number of parts is small, the process is simple, and the NVH performance and durability are good. Meanwhile, the closed cavity structure inside each component of the rear floor frame 1 can greatly improve the body's bending and torsional stiffness, bending and torsional modes, and rear suspension mounting point dynamic stiffness.

[0078] In this embodiment, the rear floor frame 1 forms a U-shaped structure by welding the first rear floor beam 103, the second rear floor beam 104, the third rear floor beam 105, and the fourth rear floor beam 106 together between the left rear longitudinal beam 101 and the right rear longitudinal beam 102. The left rear longitudinal beam 101, the right rear longitudinal beam 102, the first rear floor beam 103, the second rear floor beam 104, the third rear floor beam 105, and the fourth rear floor beam 106 are all internally high-pressure molded structures with enclosed cavities.

[0079] The left rear wheel cover 3 overlaps with the left rear longitudinal beam 101, and the right rear wheel cover 3 overlaps with the right rear longitudinal beam 102. Through the closed cavity structure inside the left rear longitudinal beam 101 and the right rear longitudinal beam 102, the overlapping structure of the rear wheel cover 3 can be effectively strengthened, and the welding point overlap strength and reliability of the rear wheel cover 3 assembly can be improved.

[0080] As an example, the first force transmission structure includes a first left-side force transmission structure and a first right-side force transmission structure. The left side of the third crossbeam 105 of the rear floor overlaps with the left rear longitudinal beam 101, and the right side of the third crossbeam 105 of the rear floor overlaps with the right rear longitudinal beam 102. The left rear wheel arch connecting plate 4 overlaps with the left rear longitudinal beam 101, and the right rear wheel arch connecting plate 4 overlaps with the right rear longitudinal beam 102. The first left-side force transmission structure, the left rear longitudinal beam 101, the third crossbeam 105 of the rear floor, the right rear longitudinal beam 102, and the first right-side force transmission structure form a first annular structure a.

[0081] As an example, the second force transmission structure includes a second left-side force transmission structure and a second right-side force transmission structure. The left side of the second crossbeam 104 of the rear floor overlaps with the left rear longitudinal beam 101, and the right side of the second crossbeam 104 of the rear floor overlaps with the right rear longitudinal beam 102. The left rear sill inner panel 8 overlaps with the left rear longitudinal beam 101, and the right rear sill inner panel 8 overlaps with the right rear longitudinal beam 102. The second left-side force transmission structure, the left rear longitudinal beam 101, the second crossbeam 104 of the rear floor, the right rear longitudinal beam 102, and the second right-side force transmission structure form a second ring structure b.

[0082] As an example, the third force transmission structure includes a third left-side force transmission structure and a third right-side force transmission structure. The left side of the fourth crossbeam 106 of the rear floor overlaps with the left rear longitudinal beam 101, and the right side of the fourth crossbeam 106 of the rear floor overlaps with the right rear longitudinal beam 102. The left rear wheel arch reinforcement plate 11 overlaps with the left rear longitudinal beam 101, and the right rear wheel arch reinforcement plate 11 overlaps with the right rear longitudinal beam 102. The tower base reinforcement bracket 14 is arranged opposite to the rear wheel arch reinforcement plate 11. The third ring structure c is formed by the third left-side force transmission structure, the left rear longitudinal beam 101, the fourth crossbeam 106 of the rear floor, the right rear longitudinal beam 102, and the third right-side force transmission structure.

[0083] As an example, the fourth force transmission structure includes a fourth left-side force transmission structure and a fourth right-side force transmission structure. The left side of the third crossbeam 105 of the rear floor overlaps with the left rear longitudinal beam 101, and the right side of the third crossbeam 105 of the rear floor overlaps with the right rear longitudinal beam 102. The left rear wheel arch connecting plate 4 overlaps with the left rear longitudinal beam 101, and the right rear wheel arch connecting plate 4 overlaps with the right rear longitudinal beam 102. The fourth ring structure d is formed by the fourth left-side force transmission structure, the left rear longitudinal beam 101, the third crossbeam 105 of the rear floor, the right rear longitudinal beam 102, and the fourth right-side force transmission structure.

[0084] like Figure 6 The diagram shows a cross-sectional view along direction AA. The second rear floor crossbeam 104, the left rear longitudinal beam 101, and the right rear longitudinal beam 102 have closed-cavity structures, which significantly improves joint stiffness and stability. The lower inner panel 9 of the C-pillar, the upper inner panel 6 of the C-pillar, and the pillar connecting plate 7, which overlap the longitudinal beams, form a force transmission structure from the rear suspension mounting point to the upper body. Simultaneously, the presence of the closed-cavity structure significantly improves the overlap strength and stiffness stability of the second force transmission structure, reducing the risk of sheet metal and weld cracking, thereby improving the overall bending and torsional stiffness and durability reliability of the rear body structure.

[0085] like Figure 7The diagram shows a cross-sectional view along the BB direction. The third crossbeam 105 of the rear floor, the left rear longitudinal beam 101, and the right rear longitudinal beam 102 have closed-cavity structures, which significantly improves the joint stiffness and stability. The rear wheel arch connecting plate 4, the first rear side outer reinforcement plate 5, the inner C-pillar plate 6, and the pillar connecting plate 7, which overlap the longitudinal beams, constitute the force transmission structure from the shock absorber to the upper body. At the same time, due to the presence of the closed-cavity structure, the overlap strength and stiffness stability of the first and fourth force transmission structures are greatly improved, reducing the risk of sheet metal and weld cracking. Furthermore, in the first force transmission structure, the shock absorber mounting plate 2 and the rear wheel arch connecting plate 4 are installed on the inner and outer sides of the rear wheel arch 3, forming an inner and outer double-layer reinforcement structure, and forming another closed cavity above the closed cavity of the third crossbeam, further improving the overall bending and torsional stiffness and NVH performance of the rear body structure.

[0086] like Figure 8 The diagram shows a cross-sectional view along the CC direction. The spring tower 10 has a closed cavity, which significantly improves the joint stiffness and stability. The rear wheel arch reinforcement plate 11, the rear side wall inner reinforcement plate 12, and the D-pillar inner plate 13, which overlap it, constitute the force transmission structure from the spring tower 10 to the upper vehicle body. At the same time, due to the presence of the closed cavity structure, the overlap strength and stiffness stability of the third force transmission structure are greatly improved, reducing the risk of sheet metal and weld cracking.

[0087] In the third force transmission structure, the tower base reinforcement bracket 14 and the rear wheel cover reinforcement plate 11 are installed on the inner and outer sides of the rear wheel cover 3, forming a triangular closed cavity above the closed cavity of the spring tower base 10, which further improves the overall bending and torsional stiffness and NVH performance of the rear body structure.

[0088] like Figure 9 The diagram shown is a cross-sectional view along the DD direction. The fourth crossbeam 106 of the rear floor, the left rear longitudinal beam 101, and the right rear longitudinal beam 102 have closed cavities, which greatly improves the joint stiffness and stability.

[0089] like Figure 10 The diagram shown is a cross-sectional view along the EE direction. The first crossbeam 103, the second crossbeam 104, the third crossbeam 105, and the fourth crossbeam 106 of the rear floor all have enclosed cavities.

[0090] This application also provides a vehicle including the rear body structure 100 of any of the above embodiments.

[0091] In this embodiment, by overlapping the shock absorber mounting plate 2, the rear wheel arch connecting plate 4, the first rear side outer reinforcing plate 5, the inner plate on the C-pillar 6, and the pillar connecting plate 7, the load of the shock absorber can be effectively transferred to the upper vehicle body, which can improve the strength of the rear structure 100 of the vehicle body. At the same time, the upper and lower vehicle bodies are connected and the force transmission path is complete, which can improve the bending and torsional stiffness, bending and torsional modes, and durability and reliability of the whole vehicle.

[0092] In this application, "multiple" refers to two or more.

[0093] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0094] The terms “first,” “second,” “third,” “fourth,” etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0095] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rear structure of a vehicle body, characterized in that, It includes a shock absorber mounting plate, a rear wheel cover, a rear wheel cover connecting plate, a first rear side outer reinforcing plate, an inner plate on the C-pillar, and a pillar connecting plate. The shock absorber mounting plate is connected to the rear wheel cover by the rear wheel cover connecting plate, and the shock absorber mounting plate is used to install the shock absorber. The first rear side outer reinforcing plate is connected between the upper end of the rear wheel arch connecting plate and the lower end of the inner plate of the C-pillar. The pillar connecting plate is connected to the upper end of the inner plate of the C-pillar. The shock absorber mounting plate, the rear wheel arch connecting plate, the first rear side outer reinforcing plate, the inner plate of the C-pillar and the pillar connecting plate form a first force transmission structure.

2. The rear structure of the vehicle body according to claim 1, characterized in that, In the left-right direction of the vehicle, the shock absorber mounting plate is disposed opposite to the rear wheel cover connecting plate, the shock absorber mounting plate is disposed on the outer side of the rear wheel cover, and the rear wheel cover connecting plate is disposed on the inner side of the rear wheel cover.

3. The rear structure of the vehicle body according to claim 1, characterized in that, A first cavity is formed between the shock absorber mounting plate and the rear wheel cover, and a second cavity is formed between the rear wheel cover connecting plate and the rear wheel cover.

4. The rear structure of the vehicle body according to claim 1, characterized in that, It also includes a rear door sill inner panel and a lower C-pillar inner panel, which are installed on the rear wheel arch. The lower end of the rear door sill inner panel is connected to the lower end of the lower C-pillar inner panel, and the upper end of the lower C-pillar inner panel is connected to the upper C-pillar inner panel. The rear sill inner panel, the lower inner panel of the C-pillar, the upper inner panel of the C-pillar, and the column connecting plate form a second force transmission structure.

5. The rear structure of the vehicle body according to claim 1, characterized in that, It also includes a spring tower base, a rear wheel arch reinforcement plate, a rear side wall inner reinforcement plate, and an upper inner plate of the D-pillar. The spring tower base and the rear wheel arch reinforcement plate are installed on the rear wheel arch. The rear side wall inner reinforcement plate is connected between the upper end of the rear wheel arch reinforcement plate and the upper inner plate of the D-pillar. The pillar connecting plate is connected between the upper inner plate of the C-pillar and the upper inner plate of the D-pillar. The spring tower base, the rear wheel arch reinforcement plate, the rear side inner reinforcement plate, and the upper inner plate of the D-pillar form a third force transmission structure.

6. The rear structure of the vehicle body according to claim 5, characterized in that, The rear structure of the vehicle body also includes a tower brace reinforcement bracket. The spring tower is connected to the tower brace reinforcement bracket. In the left-right direction of the vehicle, the tower brace reinforcement bracket is arranged opposite to the rear wheel arch reinforcement plate. The tower brace reinforcement bracket is located on the outer side of the rear wheel arch, and the rear wheel arch reinforcement plate is located on the inner side of the rear wheel arch.

7. The rear structure of the vehicle body according to claim 5, characterized in that, It also includes a second rear side outer reinforcing plate, which is installed on the rear side inner reinforcing plate, and the lower end of the second rear side outer reinforcing plate is connected to the rear wheel arch.

8. The rear structure of the vehicle body according to claim 5, characterized in that, The spring tower base, the rear wheel cover connecting plate, the first rear side outer reinforcing plate, the inner plate on the C-pillar, and the column connecting plate form a fourth force transmission structure.

9. The rear structure of the vehicle body according to claim 8, characterized in that, It also includes a rear side wall transverse reinforcing plate, and the first force transmission structure, the second force transmission structure, the third force transmission structure and the fourth force transmission structure are connected through the rear side wall transverse reinforcing plate. The front end of the rear side lateral reinforcement plate is connected to the inner panel of the C-pillar, and the rear end of the rear side lateral reinforcement plate is connected to the inner panel of the D-pillar.

10. The rear structure of the vehicle body according to claim 9, characterized in that, It also includes a rear floor frame, and the rear wheel arch and the rear wheel arch connecting plate are both connected to the rear floor frame.

11. The rear structure of the vehicle body according to claim 10, characterized in that, The first force transmission structure includes a first left-side force transmission structure and a first right-side force transmission structure, and the first left-side force transmission structure, the rear floor frame, and the first right-side force transmission structure form a first ring structure.

12. The rear structure of the vehicle body according to claim 11, characterized in that, The second force transmission structure includes a second left force transmission structure and a second right force transmission structure, wherein the second left force transmission structure, the rear floor frame, and the second right force transmission structure form a second ring structure; The first ring structure and the second ring structure together form a first herringbone double ring structure.

13. The rear structure of the vehicle body according to claim 10, characterized in that, The third force transmission structure includes a third left-side force transmission structure and a third right-side force transmission structure, and the third left-side force transmission structure, the rear floor frame, and the third right-side force transmission structure form a third ring structure.

14. The rear structure of the vehicle body according to claim 13, characterized in that, The fourth force transmission structure includes a fourth left-side force transmission structure and a fourth right-side force transmission structure, and the fourth left-side force transmission structure, the rear floor frame, and the fourth right-side force transmission structure form a fourth ring structure. The third ring structure and the fourth ring structure together form a second herringbone double ring structure.

15. The rear structure of the vehicle body according to claim 10, characterized in that, The rear floor frame includes a left rear longitudinal beam, a right rear longitudinal beam, a first rear floor crossbeam, a second rear floor crossbeam, a third rear floor crossbeam, and a fourth rear floor crossbeam. The first rear floor crossbeam, the second rear floor crossbeam, the third rear floor crossbeam, and the fourth rear floor crossbeam are connected between the left rear longitudinal beam and the right rear longitudinal beam. The left rear longitudinal beam, the right rear longitudinal beam, the first rear floor crossbeam, the second rear floor crossbeam, the third rear floor crossbeam, and the fourth rear floor crossbeam are hollow inside.

16. A vehicle, characterized in that, Includes the rear body structure as described in any one of claims 1-15.

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