Vehicle body rear structure and vehicle

Abstract

The utility model provides a vehicle body rear structure and a vehicle, and relates to the technical field of vehicle parts, and the vehicle body rear structure comprises an integrally formed rear vehicle body main body and adaptive modules arranged at the two ends of the rear vehicle body main body in the left-right direction of the vehicle body; the adaptive module comprises an energy absorption box module, a rear shock absorber mounting module used for mounting a rear shock absorber and a spring seat module used for mounting a shock absorption spring, the spring seat module is detachably connected to the rear vehicle body, and the rear shock absorber mounting module is located above the spring seat module and detachably connected to the rear vehicle body. The energy absorption box module is detachably connected to the ends, facing the vehicle rear direction, of the rear vehicle body and the spring seat module. Therefore, the adaptive module of the vehicle body rear structure can be replaced or adjusted according to the requirements of different auxiliary frames, so that the generalization degree of the vehicle body rear structure is improved, the research and development period can be shortened, the production cost can be reduced, and resources can be saved.

Description

Technical Field

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

[0002] Currently, the rear structure of automobiles is usually made by integral casting. Although it has high strength and rigidity, it lacks flexibility and adaptability when facing different models or subframe requirements. This results in a low degree of universality of the rear structure of the vehicle body. Moreover, each subframe needs to be developed and produced separately, which leads to long R&D cycles, high costs and waste of resources. Utility Model Content

[0003] The problem this invention addresses is: how to improve the versatility of the rear structure of a vehicle body.

[0004] To solve the above problems, this utility model provides a rear structure of a vehicle body and a vehicle.

[0005] In a first aspect, this utility model provides a rear vehicle structure, characterized in that it includes an integrally formed rear vehicle body and adapter modules disposed at both ends of the rear vehicle body along the left-right direction of the vehicle body; the adapter modules include an energy-absorbing box module, a rear shock absorber mounting module for mounting a rear shock absorber, and a spring seat module for mounting a shock absorber spring, the spring seat module being detachably connected to the rear vehicle body, the rear shock absorber mounting module being located above the spring seat module and detachably connected to the rear vehicle body, and the energy-absorbing box module being detachably connected to the rear vehicle body and the end of the spring seat module facing the rearward direction of the vehicle.

[0006] Optionally, the rear vehicle body includes a rear floor, rear wheel arches, wheel arch longitudinal beams, C-ring crossbeams, and a rear crossbeam. Each end of the C-ring crossbeam along the left-right direction is provided with a rear wheel arch. The wheel arch longitudinal beams are correspondingly arranged with the rear wheel arches and the adapter modules, and are connected to the lower end of the corresponding rear wheel arches. The rear floor is located on the side of the C-ring crossbeam facing forward, and the rear crossbeam is located on the side of the C-ring crossbeam facing rearward. The two ends of the rear floor along the left-right direction are respectively connected to the corresponding wheel arch longitudinal beams, and the two ends of the rear crossbeam along the left-right direction are also respectively connected to the corresponding wheel arch longitudinal beams. The energy-absorbing box module and the spring seat module are respectively connected to the corresponding wheel arch longitudinal beams. The rear wheel arches have mounting holes extending along the left-right direction. The rear shock absorber mounting module passes through the mounting holes of the corresponding rear wheel arches and is connected to the side of the corresponding rear wheel arch facing outward.

[0007] Optionally, the rear shock absorber mounting module includes a shock absorber mounting base and a first connecting part. The shock absorber mounting base has a hollow structure and an opening facing outwards from the vehicle. The first connecting part is disposed along the edge of the opening, and the shock absorber mounting base passes through the mounting hole. The first connecting part is connected to the side of the rear wheel arch facing outwards from the vehicle.

[0008] Optionally, the spring seat module includes a connecting beam and a spring mounting seat. The connecting beam is disposed inside the wheel arch longitudinal beam and extends along the front-rear direction of the vehicle body. The connecting beam is detachably connected to the wheel arch longitudinal beam. The spring mounting seat is connected to the lower end of the connecting beam and is located outside the wheel arch longitudinal beam.

[0009] Optionally, the connecting beam is provided with a relief groove, which is formed by a downward indentation of a portion of the upper end of the connecting beam and extends through the connecting beam in the left-right direction.

[0010] Optionally, the energy-absorbing box module includes an energy-absorbing box body and a second connecting part. The energy-absorbing box body has a hollow beam structure and extends along the front-rear direction of the vehicle body. The second connecting part is located at one end of the energy-absorbing box body facing the front direction of the vehicle and is connected to the wheel arch longitudinal beam. The second connecting part has a receiving cavity. One end of the spring seat module facing the rear direction of the vehicle is inserted into the receiving cavity and connected to the second connecting part.

[0011] Optionally, the wheel arch longitudinal beam includes a first longitudinal beam segment and a second longitudinal beam segment connected sequentially along the front-rear direction of the vehicle body, and the lower end face of the first longitudinal beam segment is located below the lower end face of the second longitudinal beam segment; the two ends of the rear floor along the left-right direction are respectively connected to the first longitudinal beam segment of the wheel arch longitudinal beam, the two ends of the C-ring crossbeam along the left-right direction are respectively connected to the second longitudinal beam segment of the wheel arch longitudinal beam, the two ends of the rear crossbeam along the left-right direction are also respectively connected to the second longitudinal beam segment of the wheel arch longitudinal beam, and the energy-absorbing box module and the spring seat module are respectively connected to the second longitudinal beam segment of the wheel arch longitudinal beam.

[0012] Optionally, the adapter module further includes a tooling module for cooperating with the mobile tooling. The tooling module is located below the second longitudinal beam segment and at the end of the first longitudinal beam segment facing the rear of the vehicle. The tooling module is detachably connected to the lower end face of the second longitudinal beam segment and the end of the first longitudinal beam segment facing the rear of the vehicle.

[0013] Optionally, the lower end of the second longitudinal beam segment is provided with a third connecting part, the third connecting part extends toward the tooling module and away from the second longitudinal beam segment, and the end of the tooling module facing the rear direction is provided with a mating surface that fits with the third connecting part, and the tooling module is detachably connected to the third connecting part through the mating surface.

[0014] Secondly, this utility model provides a vehicle, including the rear body structure as described above.

[0015] The beneficial effects of this utility model's rear vehicle structure are as follows: By manufacturing the rear vehicle body as a single integrated structure using an integral molding method, the rear vehicle body possesses high rigidity and load-bearing capacity, serving as the basic frame module for the entire rear vehicle structure. Furthermore, by setting adapter modules consisting of energy-absorbing box modules, rear shock absorber mounting modules, and spring seat modules at both ends of the rear vehicle body, and by detachably connecting each module to the rear vehicle body, the various modules of the rear vehicle structure can be quickly assembled using standardized connection methods such as bolt connections. This not only improves production efficiency but also allows for the replacement of only a portion of the rear vehicle structure modules in the event of a minor collision, enhancing the convenience of later maintenance. Simultaneously, it allows the rear vehicle structure to be customized according to the needs of different subframes, with adapter modules being replaced or adjustments made to their materials, shapes, sizes, or connection methods, thereby increasing the versatility of the rear vehicle structure. Moreover, it eliminates the need for separate development and production for each subframe, thus shortening the development cycle, reducing production costs, and conserving resources. Furthermore, positioning the rear shock absorber mounting module above the spring seat module prevents interference between the installation positions of the rear shock absorber and the shock spring on the rear vehicle body. The energy-absorbing box module is detachably connected to, for example, the rear end of the rear vehicle body, allowing it to crumple and absorb energy during a rear-end collision, reducing the impact force and potential injury to occupants. Moreover, this detachable connection improves the connection stability of the energy-absorbing box module and the overall rigidity of the rear vehicle structure, enhancing safety. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of the rear structure of the vehicle body in an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear structure of the vehicle body in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rear vehicle body in an embodiment of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the rear vehicle body from another perspective in an embodiment of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the rear vehicle body from another perspective in an embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram of the energy-absorbing box module in an embodiment of the present invention;

[0022] Figure 7 This is a structural schematic diagram of the energy-absorbing box module from another perspective in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the rear shock absorber mounting module in an embodiment of this utility model;

[0024] Figure 9 This is a structural schematic diagram of the rear shock absorber mounting module from another perspective in an embodiment of this utility model;

[0025] Figure 10 This is a schematic diagram of the spring seat module in an embodiment of the present invention;

[0026] Figure 11 This is a structural schematic diagram of the spring seat module from another perspective in an embodiment of this utility model;

[0027] Figure 12 This is a schematic diagram of the tooling module in an embodiment of the present utility model;

[0028] Figure 13 This is a structural schematic diagram of the tooling module from another perspective in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Rear vehicle body; 11. Rear floor; 12. Rear wheel arch; 121. Mounting hole; 122. C-ring cavity; 123. First reinforcing rib; 13. Wheel arch longitudinal beam; 131. First longitudinal beam segment; 132. Second longitudinal beam segment; 133. Third connecting part; 134. Second reinforcing rib; 135. Sill beam connecting part; 14. C-ring crossbeam; 15. Rear crossbeam; 2. Energy absorption box module; 21. Energy absorption box body; 211. Third reinforcing rib; 22. First connecting part; 221. Receiving cavity; 3. Rear shock absorber mounting module; 31. Shock absorber mounting seat; 311. Opening; 32. Second connecting part; 4. Spring seat module; 41. Spring seat; 42. Connecting beam; 421. Clearance groove; 5. Tooling module; 51. Tooling body; 511. Mating surface; 52. Fourth connecting part. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0032] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0034] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] In related technologies, the rear structure of automobiles is usually made by integral casting. Although it has high strength and rigidity, it lacks flexibility and adaptability when facing different models or subframe requirements. This results in a low degree of universality of the rear structure of the vehicle body. Moreover, each subframe needs to be developed and produced separately, which leads to long R&D cycles, high costs and waste of resources.

[0036] In view of the problems existing in the above-mentioned related technologies, this utility model provides a rear structure of the vehicle body and a vehicle.

[0037] Combination Figure 1 and Figure 2 As shown, the present invention provides a rear vehicle structure, including an integrally formed rear vehicle body 1 and adapter modules disposed at both ends of the rear vehicle body 1 along the left and right directions of the vehicle body; the adapter modules include an energy-absorbing box module 2, a rear shock absorber mounting module 3 for mounting the rear shock absorber, and a spring seat module 4 for mounting the shock absorber spring. The spring seat module 4 is detachably connected to the rear vehicle body 1, the rear shock absorber mounting module 3 is located above the spring seat module 4 and is detachably connected to the rear vehicle body 1, and the energy-absorbing box module 2 is detachably connected to the rear vehicle body 1 and the end of the spring seat module 4 facing the rear direction of the vehicle.

[0038] It should be noted that the left and right directions of the vehicle body refer to... Figure 1 and Figure 2 The Y-axis direction in the diagram is also known as the left-right direction. Correspondingly, the vertical direction of the vehicle body refers to... Figure 1 and Figure 2 The Z-axis direction, also known as the up-down direction, refers to the direction of movement of the vehicle body. The front-to-back direction refers to the direction of movement of the vehicle body. Figure 1 and Figure 2 The X-axis direction in the diagram is referred to as the front-to-back direction, with the front direction being the positive X-axis and the rear direction being the negative X-axis.

[0039] Specifically, the rear structure of the vehicle mainly includes a rear body body 1, an energy-absorbing box module 2, a rear shock absorber mounting module 3, and a spring seat module 4. The rear body body 1 is an integral structure, with energy-absorbing box modules 2, rear shock absorber mounting modules 3, and spring seat modules 4 at both its left and right ends. The rear shock absorber mounting module 3 can be detachably mounted on, for example, the rear wheel arch 12 (described later) of the rear body body 1. The energy-absorbing box module 2 and the spring seat module 4 extend along the front-rear direction of the vehicle body and can be detachably mounted on, for example, the wheel arch longitudinal beam 13 (described later) of the rear body body 1. The energy-absorbing box module 2 can also be detachably connected to the rear end of the spring seat module 4. The integrally formed rear body body 1 is the basic frame module of the entire rear structure of the vehicle body. It can be a cast aluminum structure manufactured using a casting process. This not only gives the rear body body 1 high rigidity and load-bearing capacity, but also allows for flexible design of reinforcing ribs and cavities on the rear body body 1 because it can be demolded from different directions. The energy-absorbing box module 2, rear shock absorber mounting module 3, and spring seat module 4, which are detachably connected to the rear body main body 1, are adapter modules for the entire rear structure of the vehicle. Specifically, there is one adapter module at each of the left and right ends of the rear body main body 1. Each module within the adapter module can be detachably connected to the rear body main body 1 using fasteners such as bolts or blind rivets. Furthermore, the adapter modules can be adjusted (e.g., adjusting the material, shape, size, or connection method of the adapter modules) or replaced according to the needs of different subframes. The energy-absorbing box module 2 serves as the crumple zone in a rear-end collision. Designed as separate modules to adapt to the safety strategies of different vehicle models; the installation position of the rear shock absorber mounting module 3 is usually the area with the greatest stress. During the design process, high-strength steel material can be selected based on the magnitude of the stress. The spring seat module 4 is mainly subjected to the force in the Z-axis direction (i.e., the vertical direction of the vehicle body). It can be made of high-performance composite materials to ensure high local strength while achieving lightweighting. At the same time, the rear shock absorber mounting module 3 and the spring seat module 4 are separately designed modules that can be adapted to different subframe mounting points, which can greatly expand the design range of the rear body main body 1.

[0040] In this embodiment, the rear body body 1 can be manufactured as a single-piece structure using an integral molding method, giving it high rigidity and load-bearing capacity, making it a basic frame module for the entire rear structure of the vehicle. Furthermore, by providing adapter modules consisting of an energy-absorbing box module 2, a rear shock absorber mounting module 3, and a spring seat module 4 at both ends of the rear body body 1, and by detachably connecting each module to the rear body body 1, the various modules of the rear structure can be quickly assembled using standardized connection methods such as bolt connections. This not only improves production efficiency but also allows for the replacement of only a portion of the rear structure modules in the event of a minor collision, enhancing the convenience of later maintenance. Simultaneously, it allows the rear structure to be customized according to the needs of different subframes by replacing adapter modules or adjusting their materials, shapes, sizes, or connection methods, thereby increasing the versatility of the rear structure. Moreover, it eliminates the need for separate development and production for each subframe, thus shortening the development cycle, reducing production costs, and saving resources. Furthermore, positioning the rear shock absorber mounting module 3 above the spring seat module 4 prevents interference between the installation positions of the rear shock absorber and the shock spring on the rear vehicle body 1. The energy-absorbing box module 2 is detachably connected to, for example, the rear end of the rear vehicle body 1, allowing it to crumple and absorb energy during a rear-end collision, thus reducing the impact force and potential injury to occupants. Moreover, the detachable connection between the energy-absorbing box module 2 and, for example, the rear end of the spring seat module 4 improves the connection stability of the energy-absorbing box module 2 and the overall rigidity of the rear vehicle structure, resulting in safer operation.

[0041] Optionally, combined Figures 2 to 5 As shown, the rear vehicle body 1 includes a rear floor 11, rear wheel arches 12, wheel arch longitudinal beams 13, a C-ring crossbeam 14, and a rear crossbeam 15. A rear wheel arch 12 is provided at each end of the C-ring crossbeam 14 along the left-right direction. The wheel arch longitudinal beams 13 are correspondingly arranged with the rear wheel arches 12 and the adapter modules, and are connected to the lower end of the corresponding rear wheel arches 12. The rear floor 11 is located on the side of the C-ring crossbeam 14 facing the forward direction, and the rear crossbeam 15 is located on the side of the C-ring crossbeam 14 facing the rearward direction. The rear wheel arch 11 is connected to the corresponding wheel arch longitudinal beam 13 at both ends along the left and right directions, and the rear crossbeam 15 is also connected to the corresponding wheel arch longitudinal beam 13 at both ends along the left and right directions; the energy absorption box module 2 and the spring seat module 4 are respectively connected to the corresponding wheel arch longitudinal beam 13, and the rear wheel arch 12 is provided with a mounting hole 121 that runs through along the left and right directions. The rear shock absorber mounting module 3 passes through the mounting hole 121 of the corresponding rear wheel arch 12 and is connected to the side of the corresponding rear wheel arch 12 facing outward.

[0042] It should be noted that the side of the rear wheel arch 12 facing outwards can be understood as the side of the rear wheel arch 12 that is away from the other rear wheel arch 12. For example, for the rear wheel arch 12 at the left end of the rear body 1, the side of the rear wheel arch 12 facing outwards is the left side of the rear wheel arch 12, and for the rear wheel arch 12 at the right end of the rear body 1, the side of the rear wheel arch 12 facing outwards is the right side of the rear wheel arch 12. Similarly, the side of a certain module in the adapter module (i.e., the energy absorption box module 2, the rear shock absorber mounting module 3, and the spring seat module 4) facing outwards can be understood as the side of that module that is away from the other module in the adapter module.

[0043] In this optional embodiment, the integrated rear vehicle body 1 mainly consists of five parts: a rear floor 11, a rear wheel arch 12, wheel arch longitudinal beams 13, a C-ring crossbeam 14, and a rear crossbeam 15. The wheel arch longitudinal beam 13 extends along the longitudinal direction of the vehicle body, while the C-ring crossbeam 14 and the rear crossbeam 15 extend along the left-right direction. Each end of the C-ring crossbeam 14 has a rear wheel arch 12, meaning there are two rear wheel arches. The wheel arch longitudinal beams 13 correspond one-to-one with the rear wheel arches 12 and the adapter modules. In other words, the number of rear wheel arches 12, wheel arch longitudinal beams 13, and adapter modules is the same, and they are arranged in a one-to-one correspondence. Each wheel arch 12 and wheel arch longitudinal beam 13 located on the left side of the rear body 1 correspond to the adapter module located on the left side of the rear body 1, and the wheel arch 12 and wheel arch longitudinal beam 13 located on the right side of the rear body 1 correspond to the adapter module located on the right side of the rear body 1. Moreover, the left and right ends of the C-ring crossbeam 14 can be respectively connected to the upper end face of the two wheel arch longitudinal beams 13 and connected to the two rear wheel arches 12. The rear floor 11 and the rear crossbeam 15 are respectively located on the front and rear sides of the C-ring crossbeam 14. The left and right ends of the rear floor 11 are respectively connected to the two wheel arch longitudinal beams 13, and the left and right ends of the rear crossbeam 15 are also respectively connected to the two wheel arch longitudinal beams 13. Thus, by combining the rear floor 11, rear wheel arch 12, wheel arch longitudinal beam 13, C-ring crossbeam 14 and rear crossbeam 15, which are less related to the subframe, into the rear body body 1, the structural design of the rear body body 1 can be realized. At the same time, the rear body body 1 can also be guaranteed to have high versatility.

[0044] Additionally, the energy-absorbing box module 2 and spring seat module 4 located on the left side of the rear body 1 are detachably connected to the wheel arch longitudinal beam 13 on the left side of the rear body 1. The energy-absorbing box module 2 and spring seat module 4 located on the right side of the rear body 1 are connected to the wheel arch longitudinal beam 13 on the right side of the rear body 1. The rear shock absorber mounting module 3 located on the left side of the rear body 1 is detachably mounted on the rear wheel arch 12 on the left side of the rear body 1, and the rear shock absorber mounting module 3 located on the right side of the rear body 1 is detachably mounted on the rear wheel arch 12 on the right side of the rear body 1. Moreover, the rear wheel arch 12 has mounting holes 121 that extend through the left and right directions of the vehicle body. A part of the rear shock absorber mounting module 3 (i.e., the shock absorber mounting seat 31 described later) passes through the mounting hole 121 of the corresponding rear wheel arch 12, and the other part (i.e., the second connecting part 32 described later) is located on the side of the rear wheel arch 12 facing outwards, that is, the side away from the other rear wheel arch 12, and is detachably connected to the rear wheel arch 12. In this way, the connection and fixation between each module in the adapter module and the rear body body 1 can be achieved. Moreover, by passing the shock absorber mounting bracket 31 of the rear shock absorber mounting module 3 through the mounting hole 121 of the rear wheel cover 12, the size of the rear structure of the vehicle body in the left and right direction can be shortened, making the structure of the rear structure of the vehicle body more compact. The part of the rear shock absorber mounting module 3 facing outward of the rear wheel cover 12 can be detachably connected to the rear wheel cover 12, which facilitates disassembly and assembly.

[0045] Furthermore, combined Figure 4 and Figure 5 As shown, the rear wheel arch 12 is provided with a C-ring cavity 122. The C-ring cavity 122 is formed by a partial recess of the rear wheel arch 12 towards the inward direction of the vehicle, and the C-ring cavity 122 extends upward from one end of the rear wheel arch 12 connected to the C-ring crossbeam 14 to the upper edge of the rear wheel arch 12. In this embodiment, the setting of the C-ring cavity 122 is equivalent to extending the left and right ends of the C-ring crossbeam 14 upward to the upper edge of the rear wheel arch 12, respectively. In this way, after the rear structure of the vehicle body is assembled with the side frame and the roof frame, a complete annular force transmission structure, namely the C-ring structure, can be formed at the C-ring crossbeam 14 and the C-ring cavity 122 to ensure that the vehicle body is subjected to uniform force.

[0046] Furthermore, combined Figure 4 and Figure 5 As shown, a plurality of first reinforcing ribs 123 are provided within the C-ring cavity 122, and the plurality of first reinforcing ribs 123 are spaced apart along the extending direction of the C-ring cavity 122. In this way, the first reinforcing ribs 123 are used to enhance the structural strength of the rear wheel arch 12 at the C-ring cavity 122, ensuring that the rear structure of the vehicle body has high rigidity.

[0047] Optionally, combined Figure 2 , Figure 6 and Figure 7As shown, the energy-absorbing box module 2 includes an energy-absorbing box body 21 and a first connecting part 22. The energy-absorbing box body 21 has a hollow beam structure and extends along the front-rear direction of the vehicle body. The first connecting part 22 is located at one end of the energy-absorbing box body 21 facing the front direction of the vehicle and is connected to the wheel arch longitudinal beam 13. The first connecting part 22 is provided with a receiving cavity 221. The end of the spring seat module 4 facing the rear direction of the vehicle is inserted into the receiving cavity 221 and connected to the first connecting part 22.

[0048] In this optional embodiment, the energy-absorbing box body 21 of the energy-absorbing box module 2 is used for collapse energy absorption. Setting the energy-absorbing box body 21 as a hollow beam structure extending along the longitudinal direction of the vehicle body is beneficial for improving its collapse energy absorption effect in the longitudinal direction. The first connecting portion 22 of the energy-absorbing box module 2 forms a receiving cavity 221. The rear end of the spring seat module 4 is inserted into this receiving cavity 221 and detachably connected to the first connecting portion 22. Simultaneously, the first connecting portion 22 is also detachably connected to the wheel arch longitudinal beam 13 of the rear vehicle body 1. This achieves the connection between the energy-absorbing box module 2, the spring seat module 4, and the rear vehicle body 1. Furthermore, inserting the rear end of the spring seat module 4 into the receiving cavity 221 formed by the first connecting portion 22 can, on the one hand, shorten the dimensions of the rear structure of the vehicle body in the longitudinal direction, and on the other hand, increase the connection area between the energy-absorbing box module 2 and the spring seat module 4, thereby improving the stability of the connection between the two.

[0049] Furthermore, combined Figure 7 As shown, the energy-absorbing box body 21 is provided with a third reinforcing rib 211, which extends along the front-rear direction of the vehicle body and extends from the front end to the rear end of the energy-absorbing box body 21. In this way, the third reinforcing rib 211 is used to improve the structural strength of the energy-absorbing box module 2, ensuring that the energy-absorbing box module 2 has high rigidity while achieving collapse energy absorption, thereby further improving the rigidity of the rear structure of the vehicle body.

[0050] Optionally, combined Figure 2 , Figure 8 and Figure 9 As shown, the rear shock absorber mounting module 3 includes a shock absorber mounting base 31 and a second connecting part 32. The shock absorber mounting base 31 has a hollow structure and an opening 311 facing outwards. The second connecting part 32 is provided along the edge of the opening 311, and the shock absorber mounting base 31 passes through the mounting hole 121. The second connecting part 32 is connected to the side of the rear wheel arch 12 facing outwards.

[0051] In this optional embodiment, the shock absorber mounting base 31 of the rear shock absorber mounting module 3 is generally a hollow shell structure with an opening 311. Its internal space provides mounting space for the rear shock absorber. The second connecting portion 32 of the rear shock absorber mounting module 3 is similar to a flange on the shell structure. Furthermore, the second connecting portion 32 is located on the side of the rear wheel arch 12 facing outwards and can fit against the surface of the rear wheel arch 12 for detachable connection. This achieves the connection between the rear shock absorber mounting module 3 and the rear vehicle body 1.

[0052] Optionally, combined Figure 2 , Figure 10 and Figure 11 As shown, the spring seat module 4 includes a spring mounting seat 41 and a connecting beam 42. The connecting beam 42 is disposed inside the wheel arch longitudinal beam 13 and extends along the front-rear direction of the vehicle body. The connecting beam 42 is detachably connected to the wheel arch longitudinal beam 13. The spring mounting seat 41 is connected to the lower end of the connecting beam 42 and is located outside the wheel arch longitudinal beam 13.

[0053] In this optional embodiment, both the wheel arch longitudinal beam 13 and the connecting beam 42 of the spring seat module 4 are hollow beam structures and extend along the longitudinal direction of the vehicle body. The spring mounting seat 41 of the spring seat module 4 is generally disc-shaped and located at the lower end of the connecting beam 42. Furthermore, the connecting beam 42 is located inside the wheel arch longitudinal beam 13, while the spring mounting seat 41 is located outside the wheel arch longitudinal beam 13. Specifically, the portion of the wheel arch longitudinal beam 13 corresponding to the connecting beam 42 (i.e., the rear half of the second longitudinal beam segment 132 described later) may not have a wall below it, i.e., the lower part is open to facilitate the installation of the connecting beam 42. During assembly, the connection between the spring seat module 4 and the rear vehicle body 1 is achieved by detachably connecting the connecting beam 42 to the wheel arch longitudinal beam 13 of the rear vehicle body 1. In addition, by placing the connecting beam 42 inside the wheel arch longitudinal beam 13, the space occupied by the connecting beam 42 can be saved, and the structural strength of the wheel arch longitudinal beam 13 can be enhanced, thereby improving the rigidity of the rear body body 1. The spring mounting seat 41 is placed at the lower end of the connecting beam 42 and located outside the wheel arch longitudinal beam 13, so as to facilitate the installation of shock-absorbing springs outside the wheel arch longitudinal beam 13.

[0054] Optionally, combined Figure 10 and Figure 11As shown, the connecting beam 42 is provided with a relief groove 421. The relief groove 421 is formed by a downward indentation of a portion of the upper end face of the connecting beam 42 and extends through the connecting beam 42 in the left-right direction. In this way, by providing a relief groove 421 on the connecting beam 42, structures such as reinforcing ribs or reinforcing bosses on the wheel arch longitudinal beam 13 are avoided during assembly, preventing interference between the spring seat module 4 and the rear vehicle body 1, thereby ensuring reliable connection between the two. In addition, since the area below the corresponding part of the wheel arch longitudinal beam 13 to the connecting beam 42 is an open design, the reinforcing ribs or reinforcing bosses inside are mainly located on the upper wall and can be arranged at intervals along their extension direction. Therefore, providing a relief groove 421 extending through the left-right direction on the upper end face of the connecting beam 42 can effectively avoid the reinforcing ribs or reinforcing bosses inside the wheel arch longitudinal beam 13, and the cooperation between the reinforcing ribs or reinforcing bosses and the relief groove 421 also facilitates assembly positioning.

[0055] Optionally, combined Figures 3 to 5 As shown, the wheel arch longitudinal beam 13 includes a first longitudinal beam segment 131 and a second longitudinal beam segment 132 connected sequentially along the front-rear direction of the vehicle body, and the lower end face of the first longitudinal beam segment 131 is located below the lower end face of the second longitudinal beam segment 132; the rear floor 11 is connected to the first longitudinal beam segment 131 of the wheel arch longitudinal beam 13 at both ends along the left-right direction, the C-ring crossbeam 14 is connected to the second longitudinal beam segment 132 of the wheel arch longitudinal beam 13 at both ends along the left-right direction, the rear crossbeam 15 is also connected to the second longitudinal beam segment 132 of the wheel arch longitudinal beam 13 at both ends along the left-right direction, and the energy absorption box module 2 and the spring seat module 4 are respectively connected to the second longitudinal beam segment 132 of the wheel arch longitudinal beam 13.

[0056] In this optional embodiment, the wheel arch longitudinal beam 13 is mainly composed of two parts: a first longitudinal beam segment 131 and a second longitudinal beam segment 132. The first longitudinal beam segment 131 is located in front of and below the second longitudinal beam segment 132, which makes the wheel arch longitudinal beam 13 roughly have a stepped structure. The left and right ends of the rear floor 11 are respectively connected to the first longitudinal beam segment 131 of the two wheel arch longitudinal beams 13. The left and right ends of the C-ring crossbeam 14 are respectively connected to the second longitudinal beam segment 132 of the two wheel arch longitudinal beams 13. The left and right ends of the rear crossbeam 15 are also respectively connected to the second longitudinal beam segment 132 of the two wheel arch longitudinal beams 13. The energy absorption box module 2 and the spring seat module 4 are respectively connected to the corresponding second longitudinal beam segment 132 of the wheel arch longitudinal beam 13. In this way, the connection between the energy-absorbing box module 2 and the spring seat module 4 and the wheel arch longitudinal beam 13 is realized. Moreover, the wheel arch longitudinal beam 13 is set as a stepped structure, so that the wheel arch longitudinal beam 13 not only has high rigidity, but also reduces the ground clearance of the rear floor 11, thereby increasing the space in the Z-axis direction of the vehicle.

[0057] Furthermore, combined Figure 3 and Figure 4As shown, the first longitudinal beam segment 131 and the second longitudinal beam segment 132 have a hollow beam structure, and each of the cavities of the first longitudinal beam segment 131 and the second longitudinal beam segment 132 is provided with a second reinforcing rib 134. The second reinforcing rib 134 divides the internal space of the first longitudinal beam segment 131 and the second longitudinal beam segment 132 into multiple cavities. In this way, the second reinforcing rib 134 is used to improve the structural strength of the first longitudinal beam segment 131 and the second longitudinal beam segment 132, ensuring that the left and right ends of the rear structure of the vehicle body have high rigidity, thereby better achieving the supporting and load-bearing functions.

[0058] Furthermore, combined Figure 3 and Figure 4 As shown, the first longitudinal beam segment 131 has a sill beam connecting part 135 at one end facing the front of the vehicle for detachable connection with the sill beam. This provides an installation position for the sill beam and allows the rear vehicle body 1 to be adapted to different sill beams, thus increasing its versatility.

[0059] Optionally, combined Figure 2 As shown, the adapter module also includes a tooling module 5 for cooperating with the mobile tooling. The tooling module 5 is located below the second longitudinal beam section 132 and at the end of the first longitudinal beam section 131 facing the rear direction of the vehicle. The tooling module 5 is detachably connected to the lower end face of the second longitudinal beam section 132 and the end of the first longitudinal beam section 131 facing the rear direction of the vehicle.

[0060] In this optional embodiment, the tooling module 5 can be a plastic part, used to cooperate with the mobile tooling to transport the rear vehicle body 1, so as to avoid rigid collision between the rear vehicle body 1 and the mobile tooling during transportation. Specifically, the tooling module 5 is located below the second longitudinal beam section 132 and at the rear end of the first longitudinal beam section 131. Moreover, the upper end face of the tooling module 5 is detachably connected to the lower end face of the second longitudinal beam section 132, and the front end of the tooling module 5 is detachably connected to the rear end of the first longitudinal beam section 131. That is to say, the tooling module 5 is installed at the corner where the first longitudinal beam section 131 and the second longitudinal beam section 132 are connected. When the tooling module 5 is not installed on the rear vehicle body 1, a steering tie rod can be installed at the installation position of the tooling module 5 to make the rear structure of the vehicle body suitable for vehicles with rear steering wheels. When the tooling module 5 is installed on the rear vehicle body 1, since the installation position of the tooling module 5 coincides with the installation position of the steering tie rod, the rear structure of the vehicle body is only suitable for vehicles with rear non-steering wheels. In this way, by setting the tooling module 5 on the rear body body 1, the rear body body 1 can be transported by using the tooling module 5 in conjunction with the moving tooling after the casting of the rear body body 1 is completed. Moreover, by detachably setting the tooling module 5 at the corner where the first longitudinal beam section 131 and the second longitudinal beam section 132 are connected, on the one hand, the cross-sectional area of ​​the corner in the direction perpendicular to the left and right can be increased, thereby improving the rigidity of the rear structure of the vehicle body. On the other hand, the rear structure of the vehicle body can selectively configure the tooling module 5 according to whether the rear wheels are steering wheels, so as to ensure that the rear structure of the vehicle body is applicable to both vehicles with steering wheels and vehicles with non-steering wheels.

[0061] Furthermore, combined Figure 2 , Figure 12 and Figure 13 As shown, the tooling module 5 includes a tooling body 51 and a fourth connecting part 52. The fourth connecting part 52 is located on the side of the tooling body 51 facing outwards from the vehicle and is connected to the front end of the tooling body 51. The upper end face of the tooling body 51 is connected to the lower end face of the second longitudinal beam segment 132. The fourth connecting part 52 is connected to the rear end of the first longitudinal beam segment 131 and is located on the side of the first longitudinal beam segment 131 facing outwards from the vehicle.

[0062] In this embodiment, the tooling body 51 is approximately a right-angled triangle and is used as a pad when transporting the rear vehicle body 1. The fourth connecting part 52 is approximately a plate-like structure and is located on the outer front end of the tooling body 51, connecting the front end of the tooling body 51 to the first longitudinal beam segment 131. During assembly, the upper end face of the tooling body 51 can be detachably connected to the lower end face of the second longitudinal beam segment 132, and the fourth connecting part 52 can be detachably connected to the rear end of the first longitudinal beam segment 131, so that the upper end and front end of the tooling module 5 are connected to the wheel arch longitudinal beam 13, thereby realizing the connection between the tooling module 5 and the rear vehicle body 1.

[0063] Optionally, combined Figure 2 and Figure 13 As shown, the lower end of the second longitudinal beam segment 132 is provided with a third connecting part 133. The third connecting part 133 extends toward the tooling module 5 and away from the second longitudinal beam segment 132. The tooling module 5 is provided with a mating surface 511 that fits with the third connecting part 133 at one end facing the rear of the vehicle. The tooling module 5 is detachably connected to the third connecting part 133 at the mating surface 511.

[0064] In this optional embodiment, the third connecting portion 133 extending towards the tooling module 5 and away from the second longitudinal beam segment 132 can be understood as the third connecting portion 133 being inclined downwards; the mating surface 511 is provided at the rear end of the tooling body 51 of the tooling module 5. Thus, based on the fact that the upper and front ends of the tooling module 5 are connected to the wheel arch longitudinal beam 13, the rear end of the tooling module 5 is further detachably connected to the third connecting portion 133 to improve the stability of the tooling module 5 installation. Furthermore, by providing a mating surface 511 at the rear end of the tooling body 51 of the tooling module 5 for engaging with the third connecting portion 133, a surface-to-surface contact can be formed between the rear end of the tooling body 51 and the third connecting portion 133 during assembly, thereby increasing the connection area between the rear end of the tooling module 5 and the rear vehicle body 1, and further improving the stability of the connection between the two. In addition, the third connecting part 133 is designed to be inclined downwards to support and limit the tooling module 5 in the vertical direction, thereby further improving the stability of the tooling module 5 installation.

[0065] This utility model provides a vehicle including the rear body structure as described above.

[0066] The beneficial effects of the vehicle in this embodiment are the same as those of the rear structure of the vehicle body described above, and will not be repeated here.

[0067] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A vehicle body rear structure characterized by comprising: The application relates to a rear body main body (1) and an adaptive module arranged at both ends of the rear body main body (1) along the left-right direction of the vehicle body; the adaptive module comprises an energy absorption box module (2), a rear shock absorber mounting module (3) for mounting a rear shock absorber and a spring seat module (4) for mounting a shock absorbing spring; the spring seat module (4) is detachably connected to the rear body main body (1); the rear shock absorber mounting module (3) is arranged above the spring seat module (4) and is detachably connected to the rear body main body (1); and the energy absorption box module (2) is detachably connected to the rear body main body (1) and one end of the spring seat module (4) towards the rear direction of the vehicle.

2. The vehicle body rear structure according to claim 1, characterized by The rear body main body (1) comprises a rear floor (11), a rear wheel cover (12), a wheel cover longitudinal beam (13), a C-ring cross beam (14) and a rear cross beam (15); one rear wheel cover (12) is arranged at each end of the C-ring cross beam (14) along the left-right direction; the wheel cover longitudinal beam (13) is arranged in one-to-one correspondence with the rear wheel cover (12) and the adaptive module and is connected to the lower end of the corresponding rear wheel cover (12); the rear floor (11) is arranged at one side of the C-ring cross beam (14) towards the front direction of the vehicle; the rear cross beam (15) is arranged at one side of the C-ring cross beam (14) towards the rear direction of the vehicle; the rear floor (11) is connected to the corresponding wheel cover longitudinal beam (13) at both ends along the left-right direction; the rear cross beam (15) is also connected to the corresponding wheel cover longitudinal beam (13) at both ends along the left-right direction; the energy absorption box module (2) and the spring seat module (4) are connected to the corresponding wheel cover longitudinal beam (13); the rear wheel cover (12) is provided with a mounting hole (121) penetrating along the left-right direction; and the rear shock absorber mounting module (3) is arranged in the mounting hole (121) of the corresponding rear wheel cover (12) and is connected to the side of the corresponding rear wheel cover (12) towards the outside of the vehicle.

3. The vehicle body rear structure according to claim 2, characterized by The energy absorption box module (2) comprises an energy absorption box body (21) and a first connecting part (22); the energy absorption box body (21) is arranged in a hollow beam structure and extends along the front-rear direction of the vehicle body; the first connecting part (22) is arranged at one end of the energy absorption box body (21) towards the front direction of the vehicle and is connected to the wheel cover longitudinal beam (13); the first connecting part (22) is provided with a receiving cavity (221); one end of the spring seat module (4) towards the rear direction of the vehicle is inserted into the receiving cavity (221) and is connected to the first connecting part (22).

4. The vehicle body rear structure according to claim 2, characterized by The rear shock absorber mounting module (3) comprises a shock absorber mounting seat (31) and a second connecting part (32); the shock absorber mounting seat (31) is in a hollow structure and has an opening (311) arranged towards the outside of the vehicle; the second connecting part (32) is arranged along the edge of the opening (311); the shock absorber mounting seat (31) is arranged in the mounting hole (121); and the second connecting part (32) is connected to the side of the rear wheel cover (12) towards the outside of the vehicle.

5. The vehicle body rear structure according to claim 2, characterized by The spring seat module (4) comprises a spring mounting seat (41) and a connecting beam (42), the connecting beam (42) is arranged in the wheelhouse longitudinal beam (13) and extends along the front-rear direction of the vehicle body, and the connecting beam (42) is detachably connected to the wheelhouse longitudinal beam (13), and the spring mounting seat (41) is connected to the lower end of the connecting beam (42) and located outside the wheelhouse longitudinal beam (13).

6. The vehicle body rear structure according to claim 5, characterized by The connecting beam (42) is provided with a avoiding groove (421), the avoiding groove (421) is formed by the local upper end face of the connecting beam (42) being concave downward, and extends through the connecting beam (42) along the left-right direction.

7. The vehicle body rear structure according to claim 2, characterized by The wheelhouse longitudinal beam (13) comprises a first longitudinal beam section (131) and a second longitudinal beam section (132) connected in sequence along the front-rear direction of the vehicle body, and the lower end face of the first longitudinal beam section (131) is located below the lower end face of the second longitudinal beam section (132); the two ends of the rear floor (11) along the left-right direction are connected to the first longitudinal beam section (131) of the wheelhouse longitudinal beam (13), the two ends of the C-ring cross beam (14) along the left-right direction are connected to the second longitudinal beam section (132) of the wheelhouse longitudinal beam (13), the two ends of the rear cross beam (15) along the left-right direction are also connected to the second longitudinal beam section (132) of the wheelhouse longitudinal beam (13), and the energy absorption box module (2) and the spring seat module (4) are connected to the second longitudinal beam section (132) of the wheelhouse longitudinal beam (13) respectively.

8. The vehicle body rear structure according to claim 7, characterized by The adaptation module further comprises a tool module (5) for cooperating with a mobile tool, the tool module (5) is located below the second longitudinal beam section (132) and at one end of the first longitudinal beam section (131) facing the rear direction of the vehicle, and the tool module (5) is detachably connected to the lower end face of the second longitudinal beam section (132) and the one end of the first longitudinal beam section (131) facing the rear direction of the vehicle.

9. The vehicle body rear structure according to claim 8, characterized by The lower end of the second longitudinal beam section (132) is provided with a third connecting part (133), which extends towards the tool module (5) and away from the second longitudinal beam section (132), and the one end of the tool module (5) facing the rear direction of the vehicle is provided with a matching surface (511) fitted with the third connecting part (133), and the tool module (5) is detachably connected to the third connecting part (133) at the matching surface (511).

10. A vehicle characterized by comprising: A vehicle body rear structure comprising the vehicle body rear structure according to any one of claims 1-9.

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