Vehicle body structure and vehicle

Abstract

The utility model discloses a kind of vehicle body structure and vehicle, it is related to vehicle body structure technical field, the vehicle body structure includes: rear wheel cover inner plate;Floor longitudinal beam and floor, floor is located in the inside of rear wheel cover inner plate, floor longitudinal beam is connected in the bottom of rear wheel cover inner plate and is connected in the outside of floor;Floor crossbeam and rear wheel cover connecting plate, floor crossbeam is installed above floor, rear wheel cover connecting plate is installed above floor longitudinal beam, the inner end of rear wheel cover connecting plate is connected with floor crossbeam and outer end is connected with rear wheel cover inner plate;Wherein, floor longitudinal beam is formed with longitudinal beam reinforcing cavity, multiple support plates are equipped in longitudinal beam reinforcing cavity, at least one of multiple support plates is located just below rear wheel cover connecting plate.The vehicle body structure of the utility model can enhance the structural strength of floor longitudinal beam and rear wheel cover connecting plate, to further promote the rigidity and strength of vehicle body structure, and can strengthen the mounting strength of shock absorber, and promote the dynamic stiffness, durability and NVH of this structure.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body structure technology, and in particular to a vehicle body structure and a vehicle having the vehicle body structure. Background Technology

[0002] During vehicle operation, uneven road surfaces cause bumps and vibrations that are transmitted to the vehicle body and seats through shock absorbers and coil springs, and then to the passengers' bodies, thus affecting ride comfort. At the rear shock absorber mounting point, the vehicle body structure is subjected to huge, high-frequency impacts, which can easily lead to durability cracking and failure, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a vehicle body structure that can enhance the structural strength of the floor longitudinal beam and the rear wheel arch connecting plate through at least one support plate, thereby improving the strength of the cross-connection reinforcement structure, increasing the rigidity and strength of the vehicle body structure, thereby strengthening the installation strength of the shock absorber, and improving the dynamic and static stiffness, durability, and NVH of this structure, so as to improve the driving stability and comfort of the vehicle.

[0004] According to an embodiment of the present utility model, the vehicle body structure includes: a rear wheel arch inner panel; a floor longitudinal beam and a floor, the floor being located inside the rear wheel arch inner panel, the floor longitudinal beam being connected to the bottom of the rear wheel arch inner panel and to the outside of the floor; a floor crossbeam and a rear wheel arch connecting plate, the floor crossbeam being installed above the floor, the rear wheel arch connecting plate being installed above the floor longitudinal beam, the inner end of the rear wheel arch connecting plate being connected to the floor crossbeam and the outer end being connected to the rear wheel arch inner panel; wherein, the floor longitudinal beam forms a longitudinal beam reinforcing cavity, the longitudinal beam reinforcing cavity being provided with a plurality of support plates, at least one of the plurality of support plates being located directly below the rear wheel arch connecting plate.

[0005] According to the vehicle body structure of this utility model embodiment, by setting the vehicle body structure to be a cross-connected reinforced structure, and forming a longitudinal beam reinforced cavity in the floor longitudinal beam, at least one support plate set in the longitudinal beam reinforced cavity is supported directly below the rear wheel arch connecting plate, which can enhance the structural strength of the floor longitudinal beam and the rear wheel arch connecting plate, thereby improving the strength of the cross-connected reinforced structure, and improving the rigidity and strength of the vehicle body structure. The rear wheel arch inner plate is used to install shock absorbers, which can enhance the installation strength of the shock absorbers, thereby improving the dynamic and static stiffness, durability and NVH of the structure at this location, so as to improve the driving stability and comfort of the vehicle.

[0006] According to some embodiments of the present invention, the vehicle body structure includes a first support plate located directly below the rear wheel arch connecting plate, and the first support plate is supported between the top and bottom walls of the longitudinal beam reinforcing cavity.

[0007] According to some embodiments of the present invention, the first support plate includes a top plate, a middle plate, and a bottom plate that are connected in sequence. The top plate is connected to the top wall of the longitudinal beam reinforcing cavity, the bottom plate is connected to the bottom wall of the longitudinal beam reinforcing cavity, and the middle plate is spaced apart from the two inner sidewalls of the longitudinal beam reinforcing cavity and together defines the longitudinal beam sub-cavities located on both sides of the middle plate.

[0008] According to some embodiments of the present invention, the vehicle body structure of the support plate further includes a second support plate and a third support plate. The second support plate and the third support plate are longitudinally spaced apart on both sides of the first support plate. The second support plate and the third support plate are respectively supported on the inner peripheral wall of the longitudinal beam reinforcing cavity. The floor longitudinal beam is provided with a first connector at the bottom of the second support plate and a second connector at the bottom of the third support plate. The first connector and the second connector are respectively used to connect to the subframe.

[0009] According to some embodiments of the vehicle body structure of this utility model, the support plate further includes a fourth support plate and a fifth support plate, the fourth support plate and the fifth support plate being spaced apart and distributed on the side of the third support plate away from the second support plate, the fourth support plate being supported on the inner peripheral wall of the longitudinal beam reinforcing cavity, and the fifth support plate being supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity; and / or, the support plate further includes a connected sixth support plate and a seventh support plate, the sixth support plate being supported on the inner peripheral wall of the longitudinal beam reinforcing cavity, and the seventh support plate being supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity, and both the sixth support plate and the seventh support plate being located between the first support plate and the second support plate.

[0010] According to some embodiments of the present utility model, the rear wheel arch connecting plate includes a connecting main plate, a first connecting sub-plate and a second connecting sub-plate. The first connecting sub-plate and the second connecting sub-plate are bent and connected to both ends of the connecting main plate. The first connecting sub-plate is connected to the inner plate of the rear wheel arch and the second connecting sub-plate is connected to the floor crossbeam. The connecting main plate is connected to the upper side of the floor longitudinal beam. The connection between the main board and the first connecting sub-board is provided with a plurality of spaced-apart first reinforcing structures, and / or the second connecting sub-board is provided with a plurality of intersecting second reinforcing structures, the second reinforcing structures and the first reinforcing structures being located on different sides of the rear wheel arch connecting plate.

[0011] According to some embodiments of the present invention, in the vehicle body structure, the first connecting sub-plate and the connecting main plate are connected by bending through a transition plate. The transition plate includes a first transition plate and a second transition plate that are bent and connected. The first transition plate is spaced apart from the inner plate of the rear wheel arch and the second transition plate is spaced apart from the longitudinal beam of the floor to jointly define a reinforcing cavity. The first transition plate is bent and connected to the main plate, and the second transition plate is bent and connected to the first connecting sub-plate. The reinforcing cavity is distributed on the upper side of the reinforcing cavity of the longitudinal beam.

[0012] According to some embodiments of the present utility model, in the vehicle body structure, a shock absorber support reinforcement plate is connected to the outer side of the inner panel of the rear wheel arch, the rear wheel arch connecting plate is connected to the shock absorber support reinforcement plate in the inward and outward directions, two connecting legs are formed on the lower side of the shock absorber support reinforcement plate, both connecting legs are connected to the outer side of the floor longitudinal beam, and the upper area of ​​the shock absorber support reinforcement plate is connected to the inner panel of the rear wheel arch. The shock absorber support reinforcement plate is provided with a first reinforcing rib and a second reinforcing rib. The first reinforcing rib extends vertically, and the second reinforcing rib is constructed as a ring-shaped reinforcing rib.

[0013] According to some embodiments of the present invention, in the vehicle body structure, a plurality of support plates are spaced apart along the length direction of the longitudinal beam reinforcing cavity, dividing the longitudinal beam reinforcing cavity into a plurality of partition cavities.

[0014] This utility model also proposes a vehicle.

[0015] The vehicle according to the present invention includes the body structure of any of the above embodiments.

[0016] The vehicle and the aforementioned body structure have the same advantages over the prior art, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the vehicle body structure according to an embodiment of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the vehicle body structure according to an embodiment of the present utility model. Figure 2 ; Figure 3 This is a partial schematic diagram of the vehicle body structure according to an embodiment of the present utility model; Figure 4 This is a cross-section of the vehicle body structure according to an embodiment of the present utility model. Figure 1 ; Figure 5 This is a cross-section of the vehicle body structure according to an embodiment of the present utility model. Figure 2 ; Figure 6 This is a cross-section of the vehicle body structure according to an embodiment of the present utility model. Figure 3 ; Figure 7 This is a schematic diagram of the rear wheel arch connecting plate of the vehicle body structure according to an embodiment of the present utility model. Figure 1 ; Figure 8 This is a schematic diagram of the rear wheel arch connecting plate of the vehicle body structure according to an embodiment of the present utility model. Figure 2 ; Figure 9 This is a structural schematic diagram of the shock absorber support reinforcement plate of the vehicle body structure according to an embodiment of the present utility model.

[0019] Figure label: Body structure 100, Rear wheel arch inner panel 1, floor longitudinal beam 2, longitudinal beam reinforcing cavity 21, longitudinal beam sub-cavity 211, partition cavity 212, support plate 22, first support plate 221, top plate portion 2211, middle plate portion 2212, bottom plate portion 2213, second support plate 222, third support plate 223, fourth support plate 224, fifth support plate 225, sixth support plate 226, first sub-plate 2261, second sub-plate 2262, third sub-plate 2263, seventh support plate 227, first support plate 2271, main body plate 2272, second support plate 2273, floor longitudinal beam inner panel 23, floor longitudinal beam main body 24, floor longitudinal beam cover plate 25, rear section of floor longitudinal beam 26, front section of floor longitudinal beam 27, rear sill beam 28. Floor 3, floor crossbeam 4, rear wheel arch connecting plate 5, connecting main plate 51, first connecting sub-plate 52, second connecting sub-plate 53, first reinforcing structure 54, second reinforcing structure 55, transition plate 56, first transition plate 561, second transition plate 562, reinforcing cavity 57, first connector 6, second connector 7, shock absorber support reinforcing plate 8, connecting support leg 81, first reinforcing rib 82, second reinforcing rib 83, subframe mounting reinforcing plate 9. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0023] It should be noted that during vehicle operation, uneven road surfaces cause bumps and vibrations that are transmitted to the vehicle body and seats via shock absorbers and coil springs, and ultimately to the passengers, affecting ride comfort. At the rear shock absorber mounting point, the vehicle body structure is subjected to significant, high-frequency impacts, making it prone to durability cracking and failure. Some related technologies employ connecting structures between the rear wheel arches, floor longitudinal beams, and floor transverse beams to enhance the structural strength between the rear wheel arches and floor transverse beams, thus strengthening the rear shock absorber mounting point. However, these connecting structures are complex and lack effective support structures between the floor longitudinal beams and the connecting structures, affecting the strength between the connecting structures and the floor longitudinal beams. Therefore, the vehicle body structure 100 of this application uses at least one support plate 22 to enhance the structural strength of the floor longitudinal beams 2 and the rear wheel arch connecting plate 5, thereby increasing the strength of the cross-connection reinforcement structure, improving the rigidity and strength of the vehicle body structure 100, and further strengthening the installation strength of the shock absorbers. This enhances the dynamic and static stiffness, durability, and NVH of the structure at this location, thereby improving the vehicle's driving stability and comfort.

[0024] like Figures 1-9 As shown, the vehicle body structure 100 according to an embodiment of the present utility model includes: a rear wheel arch inner plate 1, a floor longitudinal beam 2, a floor 3, a floor cross beam 4, and a rear wheel arch connecting plate 5.

[0025] Floor 3 is located inside the rear wheel arch inner panel 1. Floor longitudinal beam 2 is connected to the bottom of the rear wheel arch inner panel 1 and to the outside of floor 3. Floor transverse beam 4 is installed above floor 3. Rear wheel arch connecting plate 5 is installed above floor longitudinal beam 2. The inner end of the rear wheel arch connecting plate 5 is connected to floor transverse beam 4 and the outer end is connected to rear wheel arch inner panel 1.

[0026] Specifically, the floor 3 is located inside the rear wheel arch inner panel 1. That is, the floor 3 and the rear wheel arch inner panel 1 can be distributed along the inward and outward directions. It should be noted that the inward and outward directions are along the vehicle's transverse direction, i.e., the Y-axis, with the inward direction being closer to the vehicle's centerline and the outward direction being farther from the vehicle's centerline. In other words, the floor 3 and the rear wheel arch inner panel 1 can be arranged along the vehicle's transverse direction, with the floor 3 distributed closer to the vehicle's centerline and the rear wheel arch inner panel 1 distributed farther from the vehicle's centerline. The floor longitudinal beam 2 connects to the bottom of the rear wheel arch inner panel 1 and to the outside of the floor 3. That is, the floor longitudinal beam 2 can be set between the floor 3 and the rear wheel arch inner panel 1, with both the floor 3 and the floor longitudinal beam 2 located at the inner bottom of the rear wheel arch inner panel 1. This allows the floor longitudinal beam 2 to support both the floor 3 and the rear wheel arch inner panel 1, improving the reliability and stability of the connection between the rear wheel arch inner panel 1, the floor longitudinal beam 2, and the floor 3, and also enhancing the stability of force transmission between them.

[0027] Furthermore, the floor longitudinal beam 2 can be configured to extend along the longitudinal direction of the vehicle, thereby increasing the connection area between the floor longitudinal beam 2 and the floor 3 and the rear wheel arch inner panel 1 in the longitudinal direction of the vehicle, effectively improving the connection reliability between the floor longitudinal beam 2 and the floor 3 and the rear wheel arch inner panel 1.

[0028] The floor 3 and the floor longitudinal beam 2 can be connected by welding or other means, and the floor longitudinal beam 2 and the inner bottom of the rear wheel arch inner plate 1 can be connected by welding or other means. Welding can effectively improve the connection strength and connection accuracy between the three.

[0029] Furthermore, the floor beam 4 is installed above the floor 3. The floor beam 4 can be constructed to extend along the vehicle's crossbeams, that is, the floor beam 4 connects to the floor 3 laterally along the vehicle, which increases the connection area between the two. Connecting the floor beam 4 to the floor 3 also enhances the structural strength of the floor 3. The floor beam 4 can be connected to the top of the floor 3 by welding, effectively improving the connection strength and precision between them.

[0030] At the same time, such as Figure 1As shown, the rear wheel arch connecting plate 5 is installed above the floor longitudinal beam 2, connecting to the floor longitudinal beam 2. This structural reinforcement of the upper side of the floor longitudinal beam 2 enhances its overall strength and improves its force transmission reliability. The inner end of the rear wheel arch connecting plate 5 is connected to the floor crossbeam 4, and the outer end is connected to the rear wheel arch inner plate 1. The rear wheel arch connecting plate 5 connects the rear wheel arch inner plate 1 and the floor crossbeam 4 in the inward and outward directions, respectively reinforcing both the floor crossbeam 4 and the rear wheel arch inner plate 1, thus improving the overall structural strength. Furthermore, the rear wheel arch connecting plate 5 provides a connection channel between the rear wheel arch inner plate 1 and the floor crossbeam 4, enabling force transmission between them.

[0031] Furthermore, the rear wheel arch connecting plate 5 can be connected to the floor longitudinal beam 2 by bolts or welding, the rear wheel arch connecting plate 5 can be connected to the floor transverse beam 4 by bolts or welding, and the rear wheel arch connecting plate 5 can be connected to the rear wheel arch inner plate 1 by bolts or welding.

[0032] Thus, the floor longitudinal beam 2 is connected to the inner bottom of the rear wheel arch inner panel 1 and to the inner side of the floor 3. The floor longitudinal beam 2 extends longitudinally, and the rear wheel arch connecting plate 5 is connected above the floor longitudinal beam 2. The inner end of the rear wheel arch connecting plate 5 is connected to the floor crossbeam 4 and the outer end is connected to the rear wheel arch inner panel 1. This makes the rear wheel arch inner panel 1, the rear wheel arch connecting plate 5 and the floor crossbeam 4 form a transverse reinforcing structure, so that the vehicle body structure 100 presents a cross-connected reinforcing structure. The floor crossbeam 4 transmits the force of the vehicle body from the Y direction to the Z direction, and the floor longitudinal beam 2 transmits the force of the vehicle body in the X direction. The resulting structure is a cross-shaped reinforcing force transmission structure, which can improve the force transmission stability during vehicle driving.

[0033] Among them, such as Figure 3 As shown, the floor longitudinal beam 2 forms a longitudinal beam reinforcing cavity 21, within which multiple support plates 22 are provided. Specifically, the longitudinal beam reinforcing cavity 21 can be used to strengthen the structure of the floor longitudinal beam 2. The floor longitudinal beam 2 extends longitudinally, and the longitudinal beam reinforcing cavity 21 can also extend longitudinally. The multiple support plates 22 within the longitudinal beam reinforcing cavity 21 can support the inner peripheral wall of the longitudinal beam reinforcing cavity 21, increasing the structural strength of the floor longitudinal beam 2, optimizing the load distribution of the floor longitudinal beam 2, improving torsional resistance, and enhancing collision safety. The support plates 22 can be one, two, three, four, five, etc.

[0034] Furthermore, at least one of the multiple support plates 22 is located directly below the rear wheel arch connecting plate 5. That is, one of the multiple support plates 22 can be located directly below the rear wheel arch connecting plate 5, or two or three of the multiple support plates 22 can be located directly below the rear wheel arch connecting plate 5. The arrangement methods are diverse and can be flexibly selected.

[0035] Thus, by supporting the rear wheel arch connecting plate 5 from below with at least one support plate 22, the structural strength of the rear wheel arch connecting plate 5 can be enhanced, thereby increasing the connection strength between the rear wheel arch connecting plate 5 and the floor longitudinal beam 2, and thus improving the strength of the cross-connection reinforcement structure.

[0036] According to the vehicle body structure 100 of this utility model embodiment, a rear wheel arch connecting plate 5 is connected to the upper part of the floor longitudinal beam 2, and the inner end of the rear wheel arch connecting plate 5 is connected to the floor cross beam 4 and the outer end is connected to the rear wheel arch inner plate 1. This makes the rear wheel arch inner plate 1, the rear wheel arch connecting plate 5 and the floor cross beam 4 form a transverse reinforcing structure, so that the vehicle body structure 100 presents a cross-connected reinforcing structure. A longitudinal beam reinforcing cavity 21 is formed in the floor longitudinal beam 2, and at least one support plate 22 is provided in the longitudinal beam reinforcing cavity 21 to support the rear wheel arch connecting plate 5 directly below it. This can enhance the structural strength of the floor longitudinal beam 2 and the rear wheel arch connecting plate 5, thereby improving the strength of the cross-connected reinforcing structure, improving the rigidity and strength of the vehicle body structure 100, resisting the torsional deformation of the vehicle body, absorbing and reducing the vibration excitation from the ground to the vehicle body direction, reducing the deformation in this area and achieving sound insulation, thereby improving the overall vehicle performance and comfort.

[0037] The rear wheel arch inner panel 1 is used to install shock absorbers. By setting the body structure 100 as a cross-connection reinforcement structure, the installation strength of the shock absorbers can be strengthened, thereby improving the dynamic and static stiffness, durability and NVH of this structure, so as to improve the driving stability and comfort of the vehicle.

[0038] In some embodiments, the support plate 22 includes a first support plate 221, which is located directly below the rear wheel arch connecting plate 5 and is supported between the top and bottom walls of the longitudinal beam reinforcing cavity 21.

[0039] Specifically, such as Figure 3 and Figure 4As shown, the first support plate 221 is positioned directly below the rear wheel arch connecting plate 5, allowing the first support plate 221 to be supported directly below the rear wheel arch connecting plate 5. This strengthens the structural strength of the rear wheel arch connecting plate 5 by placing it below the rear wheel arch connecting plate 5. The first support plate 221 is also supported between the top and bottom walls of the longitudinal beam reinforcing cavity 21. Specifically, the top of the first support plate 221 is supported by the top wall of the longitudinal beam reinforcing cavity 21, providing support and reinforcement for the top of the floor longitudinal beam 2 and the rear wheel arch connecting plate 5. The bottom of the first support plate 221 is supported by the bottom wall of the longitudinal beam reinforcing cavity 21, providing support and reinforcement for the bottom of the floor longitudinal beam 2. In other words, the floor longitudinal beam 2 can be vertically reinforced, effectively strengthening the structure of the floor longitudinal beam 2 and the rear wheel arch connecting plate 5.

[0040] Thus, by structurally reinforcing the rear wheel arch connecting plate 5 and the floor longitudinal beam 2 through the first support plate 221, the connection strength between the rear wheel arch connecting plate 5 and the floor longitudinal beam 2, the floor cross beam 4 and the rear wheel arch inner plate 1 can be enhanced, thereby improving the rigidity and strength of the vehicle body structure 100, resisting torsional deformation of the vehicle body, absorbing and reducing vibration excitation from the ground to the vehicle body direction, reducing deformation in this area and achieving sound insulation, thereby improving the overall vehicle performance and comfort.

[0041] In some embodiments, the first support plate 221 includes a top plate portion 2211, a middle plate portion 2212 and a bottom plate portion 2213 connected in sequence. The top plate portion 2211 is connected to the top wall of the longitudinal beam reinforcing cavity 21, the bottom plate portion 2213 is connected to the bottom wall of the longitudinal beam reinforcing cavity 21, and the middle plate portion 2212 is spaced apart from the two inner side walls of the longitudinal beam reinforcing cavity 21 and together defines the longitudinal beam sub-cavities 211 located on both sides of the middle plate portion 2212.

[0042] Specifically, such as Figure 4 As shown, the first support plate 221 includes a top plate portion 2211, a middle plate portion 2212, and a bottom plate portion 2213. The top plate portion 2211 is used to connect with the top wall of the longitudinal beam reinforcing cavity 21, that is, the top plate portion 2211 can reinforce the top wall of the longitudinal beam reinforcing cavity 21. Furthermore, the connection between the top plate portion 2211 and the top wall of the longitudinal beam reinforcing cavity 21 allows the top of the first support plate 221 to connect with the top of the longitudinal beam reinforcing cavity 21. The bottom plate portion 2213 is used to connect with the bottom wall of the longitudinal beam reinforcing cavity 21, that is, the bottom plate portion 2213 can reinforce the bottom of the longitudinal beam reinforcing cavity 21. The wall is reinforced and connected to the bottom wall of the longitudinal beam reinforcement cavity 21 through the bottom plate portion 2213, so that the bottom of the first support plate 221 is connected to the bottom of the longitudinal beam reinforcement cavity 21. The middle plate portion 2212 is connected between the top plate portion 2211 and the bottom plate portion 2213, and the two inner side walls of the middle plate portion 2212 and the longitudinal beam reinforcement cavity 21 are spaced apart in the inward and outward directions, so that the middle plate portion 2212 and the longitudinal beam reinforcement cavity 21 together define the longitudinal beam sub-cavities 211 distributed on the inner and outer sides of the middle plate portion 2212, so as to structurally reinforce the floor longitudinal beam 2.

[0043] The top plate 2211, the middle plate 2212, and the bottom plate 2213 can be bent and connected sequentially. The top plate 2211 and the bottom plate 2213 can both be connected to the same side of the middle plate 2212, or the top plate 2211 and the bottom plate 2213 can be connected to different sides of the middle plate 2212. The middle plate 2212 can support both the top plate 2211 and the bottom plate 2213 respectively. That is, the top plate 2211 is connected to the top wall of the longitudinal beam reinforcing cavity 21. The bottom plate 2213 is connected to the bottom wall of the longitudinal beam reinforcing cavity 21, and the intermediate plate 2212 is supported between the top and bottom walls of the longitudinal beam reinforcing cavity 21, effectively supporting the top and bottom walls of the longitudinal beam reinforcing cavity 21. The top plate 2211 is closely connected to the top wall of the longitudinal beam reinforcing cavity 21, enhancing the connection strength between them. Similarly, the bottom plate 2213 is closely connected to the bottom wall of the longitudinal beam reinforcing cavity 21, further enhancing the connection strength between them, thereby improving the connection strength between the first support plate 221 and the floor longitudinal beam 2. This design is simple in structure, easy to manufacture, and reduces installation costs.

[0044] Furthermore, the top plate 2211 is connected to the top wall of the longitudinal beam reinforcing cavity 21 by welding or other means, and the bottom plate 2213 is connected to the bottom wall of the longitudinal beam reinforcing cavity 21 by welding or other means.

[0045] And, such as Figure 1 As shown, the floor longitudinal beam 2 includes: an inner plate 23, a main body 24, and a cover plate 25. The cover plate 25 is connected to the outside of the main body 24. The inner plate 23 is connected to the upper side of the cover plate 25 and the main body 24. The inner plate 23 is connected to the bottom of the rear wheel arch inner plate 1 and to the outside of the floor 3, enabling the floor longitudinal beam 2 to connect to the rear wheel arch inner plate 1 and the floor 3 respectively. The cover plate 25 and the main body 24 are connected to form the inner wall and bottom wall of the longitudinal beam reinforcing cavity 21, and the inner plate 23 forms the top wall of the reinforcing cavity 21. The front end of the floor longitudinal beam 2 is connected to the front section 27 and the rear door sill beam 28, and the rear end of the floor longitudinal beam 2 is connected to the rear section 26.

[0046] In some embodiments, the support plate 22 further includes a second support plate 222 and a third support plate 223, which are longitudinally spaced apart on both sides of the first support plate 221 and are respectively supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21.

[0047] Specifically, a second support plate 222 and a third support plate 223 are arranged longitudinally and spaced apart on both sides of the first support plate 221. Both the second support plate 222 and the third support plate 223 have a supporting function, which can support and strengthen the two spaced positions on both sides of the first support plate 221 in the longitudinal direction of the longitudinal beam strengthening cavity 21, thereby improving the overall strength of the floor longitudinal beam 2. The second support plate 222 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21. That is, the second support plate 222 can support the top wall, bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. In other words, the second support plate 222 can support and reinforce the top, bottom and side walls of the floor longitudinal beam 2 respectively, so as to improve the reliability of the reinforcement of the floor longitudinal beam 2 by the second support plate 222. The third support plate 223 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21. That is, the third support plate 223 can support the top wall, bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. In other words, the third support plate 223 can support and reinforce the top, bottom and side walls of the floor longitudinal beam 2 respectively, so as to improve the reliability of the reinforcement of the floor longitudinal beam 2 by the third support plate 223.

[0048] The second support plate 222 and the third support plate 223 can both be provided with vertically distributed main plates. The top, bottom and sides of the main plates can be provided with flanges. The flanges can be used to connect the second support plate 222 and the third support plate 223 to the inner peripheral wall of the longitudinal beam reinforcing cavity 21, which is simple in structure and easy to process.

[0049] Furthermore, the floor longitudinal beam 2 is provided with a first connector 6 at the bottom of the second support plate 222 and a second connector 7 at the bottom of the third support plate 223. The first connector 6 and the second connector 7 are respectively used to connect to the subframe.

[0050] Specifically, a first connector 6 can be provided on the floor longitudinal beam 2. The first connector 6 is located at the bottom of the second support plate 222, which can structurally reinforce the first connector 6 to improve the connection reliability between the first connector 6 and the floor longitudinal beam 2. The first connector 6 is used to connect to the subframe. The second support plate 222 can improve the connection strength between the first connector 6 and the subframe. A second connector 7 can also be provided on the floor longitudinal beam 2. The second connector 7 is located at the bottom of the third support plate 223, which can structurally reinforce the second connector 7 to improve the connection reliability between the second connector 7 and the floor longitudinal beam 2. The second connector 7 is used to connect to the subframe. The third support plate 223 can improve the connection strength between the second connector 7 and the subframe, thereby improving the connection strength between the floor longitudinal beam 2 and the subframe.

[0051] The second support plate 222 can be connected to the first connector 6 by welding, snap-fitting or other means, and the third support plate 223 can be connected to the second connector 7 by welding, snap-fitting or other means, as long as the connection reliability between the second support plate 222 and the first connector 6 and the third support plate 223 and the second connector 7 is satisfied.

[0052] Furthermore, both the first connecting piece 6 and the second connecting piece 7 can be constructed as mounting nuts. The mounting nuts are connected to the floor longitudinal beam 2. The subframe is provided with a connecting hole, and the connecting bolt can be directly passed through the connecting hole to engage with the mounting nut through thread. This allows the subframe to be connected to the floor longitudinal beam 2. The connection method is simple and the connection strength is reliable.

[0053] Among them, such as Figure 5 As shown, the first connector 6 passes through the floor longitudinal beam 2 and is connected to the subframe mounting reinforcement plate 9 on the lower side of the floor longitudinal beam 2. This can improve the installation strength of the first connector 6 and the subframe. Furthermore, the first connector 6 has a three-layer sheet metal reinforcement structure designed upwards through Z to form a two-layer cavity structure, which improves rigidity and strength, absorbs vibration excitation, reduces impact deformation, and improves durability and NVH.

[0054] In some embodiments, the support plate 22 further includes a fourth support plate 224 and a fifth support plate 225, which are spaced apart from the third support plate 223 on the side opposite to the second support plate 222. The fourth support plate 224 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21, and the fifth support plate 225 is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21.

[0055] Specifically, the fourth support plate 224 and the fifth support plate 225 are spaced apart, and both the fourth support plate 224 and the fifth support plate 225 are located on the side of the third support plate 223 away from the second support plate 222. That is, the fourth support plate 224 and the fifth support plate 225 are both located on the same side of the third support plate 223. In this way, the fourth support plate 224 and the fifth support plate 225 can respectively support and strengthen the longitudinal beam reinforcing cavity 21 at two positions in the same area of ​​the third support plate 223, which can improve the overall strength of the floor longitudinal beam 2.

[0056] The fourth support plate 224 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21. That is, the fourth support plate 224 can support the top wall, bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. In other words, the fourth support plate 224 can support and reinforce the top, bottom and side walls of the floor longitudinal beam 2 respectively, so as to improve the reliability of the reinforcement of the floor longitudinal beam 2 by the fourth support plate 224. The fifth support plate 225 is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. That is, the fifth support plate 225 can support and reinforce the bottom and side walls of the floor longitudinal beam 2 respectively, so as to improve the reliability of the reinforcement of the floor longitudinal beam 2 by the fifth support plate 225.

[0057] The fourth support plate 224 and the fifth support plate 225 can both be provided with vertically distributed main plates. The top, bottom and sides of the main plates can be provided with flanges. The flanges can be used to connect the fourth support plate 224 and the fifth support plate 225 to the inner peripheral wall of the longitudinal beam reinforcing cavity 21, which is simple in structure and easy to process.

[0058] In some embodiments, the support plate 22 further includes a sixth support plate 226 and a seventh support plate 227 connected to each other. The sixth support plate 226 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21, and the seventh support plate 227 is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. Both the sixth support plate 226 and the seventh support plate 227 are located between the first support plate 221 and the second support plate 222.

[0059] Specifically, the sixth support plate 226 and the seventh support plate 227 are connected, which allows the sixth support plate 226 and the seventh support plate 227 to be connected and supported, thereby improving the structural strength between them. The sixth support plate 226 is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity 21, that is, the sixth support plate 226 can support the top wall, bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. In other words, the sixth support plate 226 can support and reinforce the top, bottom and side walls of the floor longitudinal beam 2 respectively, thereby improving the reliability of the reinforcement of the floor longitudinal beam 2 by the sixth support plate 226. The seventh support plate 227 is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity 21. In other words, the seventh support plate 227 can support and reinforce the bottom and side walls of the floor longitudinal beam 2 respectively, thereby improving the reliability of the reinforcement of the floor longitudinal beam 2 by the seventh support plate 227.

[0060] Furthermore, the sixth support plate 226 and the seventh support plate 227 are both located between the first support plate 221 and the second support plate 222. In this way, the sixth support plate 226 and the seventh support plate 227 can respectively support and strengthen the longitudinal beam reinforcing cavity 21 at two positions in the area between the first support plate 221 and the second support plate 222, thereby improving the overall strength of the floor longitudinal beam 2.

[0061] The sixth support plate 226 includes a first sub-plate 2261, a second sub-plate 2262, and a third sub-plate 2263 that are bent and connected in sequence. The first sub-plate 2261 and the third sub-plate 2263 are both located on the same side of the second sub-plate 2262, thus making the sixth support plate 226 a U-shaped plate. The first sub-plate 2261 and the third sub-plate 2263 are respectively supported between the top wall and the bottom wall of the longitudinal beam reinforcing cavity 21. That is, the first sub-plate 2261 can be connected to the top wall and the bottom wall of the longitudinal beam reinforcing cavity 21 respectively, and can be configured to... The third sub-plate 2263 is positioned to connect to the top and bottom walls of the longitudinal beam reinforcing cavity 21, respectively, so that the sixth support plate 226 reinforces the top and bottom walls of the longitudinal beam reinforcing cavity 21 through the first sub-plate 2261 and the third sub-plate 2263, thereby increasing the reinforcing strength of the sixth support plate 226 on the floor longitudinal beam 2. The second sub-plate 2262 is supported on the outer wall of the longitudinal beam reinforcing cavity 21, meaning the second sub-plate 2262 can be connected to the outer wall of the longitudinal beam reinforcing cavity 21, thus reinforcing the longitudinal beam reinforcing cavity 21 with the sixth support plate 226. Its structure is simple and easy to manufacture.

[0062] Furthermore, the first sub-plate 2261, the second sub-plate 2262, and the third sub-plate 2263 define an inwardly opening receiving cavity. At least a portion of the seventh support plate 227 is located within this receiving cavity, meaning that part or all of the seventh support plate 227 can be situated within it. This allows both the seventh support plate 227 and the sixth support plate 226 to be disposed within the longitudinal beam reinforcing cavity 21, satisfying the arrangement requirements of the two support plates 22. In this embodiment, the partial location of the seventh support plate 227 within the receiving cavity allows for a certain degree of overlap between the two in the inward and outward directions, reducing the lateral space occupied by the sixth support plate 226 and the seventh support plate 227.

[0063] The seventh support plate 227 includes a first branch plate 2271, a main plate 2272, and a second branch plate 2273, which are bent and connected in sequence. The first branch plate 2271 and the second branch plate 2273 are both located on the same side of the main plate 2272, thus making the seventh support plate 227 a U-shaped plate. The first branch plate 2271 is supported between the first sub-plate 2261 and the third sub-plate 2263. That is, the first branch plate 2271 can be connected to the first sub-plate 2261 and the third sub-plate 2263 respectively, so that the first branch plate 2271 can support the first sub-plate 2261 and the third sub-plate 2263 respectively. This design enhances the structural strength between the first sub-plate 2261 and the third sub-plate 2263, thereby improving the structural strength of the sixth support plate 226. The main plate 2272 is supported by the bottom wall of the longitudinal beam reinforcing cavity 21, meaning the main plate 2272 can be connected to the bottom wall of the longitudinal beam reinforcing cavity 21, thus strengthening the bottom of the longitudinal beam reinforcing cavity 21 with the seventh support plate 227. Furthermore, the second support plate 2273 is supported by the inner wall of the longitudinal beam reinforcing cavity 21, meaning the second support plate 2273 can be connected to the bottom of the longitudinal beam reinforcing cavity 21, thus strengthening the inner wall of the longitudinal beam reinforcing cavity 21 with the seventh support plate 227. The structure is simple and easy to manufacture.

[0064] And such as Figure 6 As shown, the sixth support plate 226 and the seventh support plate 227 provide mounting fit for the rear shock absorber spring in the rear subframe system. At this location, the sixth support plate 226 and the seventh support plate 227 are added in the floor longitudinal beam 2 to form a segmented cavity reinforcement structure. The components in this reinforcement structure are fixed by spot welding. This reinforcement structure absorbs and transmits the impact of the shock absorber, resists deformation, improves the shock absorption effect, and enhances the vehicle's driving stability and ride comfort.

[0065] In some embodiments, the rear wheel arch connecting plate 5 includes a connecting main plate 51, a first connecting sub-plate 52, and a second connecting sub-plate 53. The first connecting sub-plate 52 and the second connecting sub-plate 53 are bent and connected to both ends of the connecting main plate 51. The first connecting sub-plate 52 is connected to the rear wheel arch inner plate 1, and the second connecting sub-plate 53 is connected to the floor crossbeam 4. The connecting main plate 51 is connected to the upper side of the floor longitudinal beam 2.

[0066] Specifically, such as Figure 7As shown, the main connecting plate 51 is connected between the first connecting sub-plate 52 and the second connecting sub-plate 53. The main connecting plate 51 is used to connect to the upper side of the floor longitudinal beam 2, thereby realizing the connection between the rear wheel arch connecting plate 5 and the upper side of the floor longitudinal beam 2. Furthermore, by connecting the main connecting plate 51 to the upper side of the floor longitudinal beam 2, the upper side of the floor longitudinal beam 2 can be structurally reinforced. The first connecting sub-plate 52 is used to connect to the inner plate 1 of the rear wheel arch. For example, if the first connecting sub-plate 52 is connected to the inner bottom of the inner plate 1 of the rear wheel arch, the connection between the rear wheel arch and the inner plate 5 can be realized. The connecting plate 5 is connected to the inner bottom of the rear wheel arch inner plate 1, and is connected to the inner side of the rear wheel arch inner plate 1 through the first connecting sub-plate 52, which can strengthen the inner side of the floor longitudinal beam 2. The second connecting sub-plate 53 is used to connect to the floor crossbeam 4. If the second connecting sub-plate 53 is connected to the outer end of the floor crossbeam 4, the rear wheel arch connecting plate 5 can be connected to the outer end of the floor crossbeam 4, and the outer end of the floor crossbeam 4 can be strengthened through the connection of the second connecting sub-plate 53 to the outer end of the floor crossbeam 4.

[0067] The first connecting sub-plate 52 and the second connecting sub-plate 53 are bent and connected to both ends of the connecting main plate 51. The first connecting sub-plate 52 can be located at the outer end of the connecting main plate 51, so that the first connecting sub-plate 52 is close to the inner plate 1 of the rear wheel cover, which facilitates the connection between the first connecting sub-plate 52 and the inner plate 1 of the rear wheel cover. The second connecting sub-plate 53 can be located at the inner end of the connecting main plate 51, so that the second connecting sub-plate 53 is close to the floor beam 4, which facilitates the connection between the second connecting sub-plate 53 and the floor beam 4. The structure is simple and easy to process.

[0068] Furthermore, the main board 51, the first connecting sub-board 52, and the second connecting sub-board 53 are all constructed as plate structures, which can make the overall thickness of the rear wheel cover connecting plate 5 smaller. This allows the rear wheel cover connecting plate 5 to reinforce the structure of the rear wheel cover inner plate 1 and the floor beam 4 respectively. In addition, the rear wheel cover connecting plate 5 occupies little vertical space, reducing the space occupied by other structures and making it easier to reserve more space for the arrangement of other structures.

[0069] The connection between the main board 51 and the first connecting sub-board 52 is provided with a plurality of spaced-apart first reinforcing structures 54, and / or the second connecting sub-board 53 is provided with a plurality of intersecting second reinforcing structures 55, the second reinforcing structures 55 and the first reinforcing structures 54 being located on different sides of the rear wheel arch connecting plate 5.

[0070] Specifically, such as Figure 7 As shown, the rear wheel arch connecting plate 5 is provided with a first reinforcing structure 54. The first reinforcing structure 54 is located between the connecting main plate 51 and the first connecting sub-plate 52. The first reinforcing structure 54 can improve the structural strength at the connection between the connecting main plate 51 and the first connecting sub-plate 52, and as shown... Figure 8As shown, the rear wheel arch connecting plate 5 is provided with a second reinforcing structure 55, which is located on the second connecting sub-plate 53. The structural strength of the second connecting sub-plate 53 can be improved by the second reinforcing structure 55. The structural strength of the rear wheel arch connecting plate 5 can be effectively improved by the first reinforcing structure 54 and the second reinforcing structure 55.

[0071] The first reinforcing structure 54 is multiplied and can be spaced apart along the length of the rear wheel arch connecting plate 5. This means that multiple first reinforcing structures 54 can structurally reinforce multiple locations at the connection between the main connecting plate 51 and the first connecting sub-plate 52, thereby enhancing the reinforcing effect of the multiple first reinforcing structures 54 on the rear wheel arch connecting plate 5. The first reinforcing structure 54 can be constructed as a strip-shaped reinforcing rib. Similarly, the second reinforcing structure 55 is multiplied and can be spaced apart along the second connecting sub-plate 53. This means that multiple second reinforcing structures 55 can structurally reinforce multiple locations on the second connecting sub-plate 53, thereby enhancing the reinforcing effect of the multiple second reinforcing structures 55 on the rear wheel arch connecting plate 5. The second reinforcing structure 55 can be constructed as a strip-shaped reinforcing rib, and the strip-shaped reinforcing ribs can be intersected to increase the strength between the multiple strip-shaped reinforcing ribs, further enhancing the reinforcing effect of the second reinforcing ribs 83 on the second connecting sub-plate 53.

[0072] Furthermore, the first reinforcing structure 54 and the second reinforcing structure 55 are located on different sides of the rear wheel arch connecting plate 5. That is, the first reinforcing structure 54 is located on one side of the rear wheel arch connecting plate 5, and the second reinforcing structure 55 is located on the other side of the rear wheel arch connecting plate 5. This allows the first reinforcing structure 54 to structurally reinforce one side of the rear wheel arch connecting plate 5, and the second reinforcing structure 55 to structurally reinforce the other side of the rear wheel arch connecting plate 5, thereby achieving reinforcement of the rear wheel arch connecting plate 5 from different sides. In this embodiment, the first reinforcing structure 54 can be located on the side of the rear wheel arch connecting plate 5 away from the floor longitudinal beam 2, and the second reinforcing structure 55 can be located on the side of the rear wheel arch connecting plate 5 closer to the floor longitudinal beam 2. Alternatively, the first reinforcing structure 54 and the second reinforcing structure 55 can also be located on the same side of the rear wheel arch connecting plate 5.

[0073] Thus, the rigidity of the rear wheel arch connecting plate 5 is improved through the first reinforcing structure 54 and the second reinforcing structure 55, and force transmission can be achieved. That is, through the force transmission reinforcing ribs and the mesh reinforcing ribs, the force can be dispersed, transmitted, absorbed and reduced when subjected to impact. Compared with traditional stamped parts, this part has the effects of high precision, small space occupation in the cockpit, and targeted reinforcement of characteristic parts.

[0074] Among them, the connecting motherboard 51, the first connecting sub-board 52 and the second connecting sub-board 53 can be integrally formed to improve the structural strength of the rear wheel cover connecting plate 5, and the rear wheel cover connecting plate 5 can be integrally formed by an integral die-casting process.

[0075] In some embodiments, the first connecting subplate 52 and the connecting main plate 51 are bent and connected by a transition plate 56. The transition plate 56 includes a first transition plate 561 and a second transition plate 562 bent and connected. The first transition plate 561 is spaced apart from the rear wheel arch inner plate 1 and the second transition plate 562 is spaced apart from the floor longitudinal beam 2 to jointly define a reinforcing cavity 57. The first transition plate 561 is bent and connected to the connecting main plate 51, and the second transition plate 562 is bent and connected to the first connecting subplate 52. The reinforcing cavity 57 is distributed on the upper side of the longitudinal beam reinforcing cavity 21.

[0076] Specifically, the transition plate 56 serves as a transition connection. The transition plate 56 includes a first transition plate 561 and a second transition plate 562. The first transition plate 561 and the second transition plate 562 are bent and connected, forming a cavity space between the first transition plate 561 and the second transition plate 562. The first transition plate 561 is spaced apart from the rear wheel arch inner plate 1, forming a cavity space between the first transition plate 561 and the rear wheel arch inner plate 1. The second transition plate 562 is spaced apart from the floor longitudinal beam 2, forming a cavity space between the second transition plate 562 and the floor longitudinal beam 2. Thus, the first transition plate 561, the second transition plate 562, the rear wheel arch inner plate 1, and the floor longitudinal beam 2 together define a reinforcing cavity 57, which can strengthen the connection between the transition plate 56 and the rear wheel arch inner plate 1 and the floor longitudinal beam 2, and enhance the connection strength between the first connecting sub-plate 52 and the connecting main plate 51.

[0077] And such as Figure 4 and Figure 8 As shown, the first transition plate 561 is bent and connected to the connecting main plate 51, allowing the transition plate 56 to be connected to the connecting main plate 51 via the first transition plate 561. The second transition plate 562 is bent and connected to the first connecting sub-plate 52, allowing the transition plate 56 to be connected to the first connecting sub-plate 52 via the second transition plate 562. Specifically, the first transition plate 561 bends away from the floor longitudinal beam 2 at the connecting main plate 51, and the second transition plate 562 bends towards the rear wheel arch inner plate 1 at the first transition plate 561. The first connecting plate 52 bends away from the floor longitudinal beam 2 at the second transition plate 562. This allows the first connecting plate 52 to connect with the rear wheel arch inner plate 1, and forms a square reinforcing cavity 57 between the first transition plate 561, the second transition plate 562, the rear wheel arch inner plate 1, and the floor longitudinal beam 2. The first transition plate 561 and the floor longitudinal beam 2, and the second transition plate 562 and the rear wheel arch inner plate 1 support each other, which can improve the connection strength between the rear wheel arch connecting plate 5 and the floor longitudinal beam 2 and the rear wheel arch inner plate 1.

[0078] Furthermore, the reinforcing cavities 57 are distributed on the upper side of the longitudinal beam reinforcing cavities 21, that is, the reinforcing cavities 57 and the longitudinal beam reinforcing cavities 21 are spaced apart, and are used to structurally reinforce the upper and lower sides of the floor longitudinal beam 2, respectively. For example, Figure 4 As shown, the first support plate 221 is supported between the top and bottom walls of the longitudinal beam reinforcing cavity 21, and the transition plate 56 of the rear wheel arch connecting plate 5 forms a reinforcing cavity between the rear wheel arch inner plate 1 and the floor longitudinal beam inner plate 23. The intermediate plate portion 2212 is spaced apart from the two inner side walls of the longitudinal beam reinforcing cavity 21 and together defines the longitudinal beam sub-cavities 211 located on both sides of the intermediate plate portion 2212. That is, the vehicle body structure 100 can form a closed multi-cavity reinforcing structure at the rear wheel arch connecting plate 5, and force can be transmitted through the floor longitudinal beam cover plate 25 of the floor longitudinal beam 2, the floor longitudinal beam body 24, the first support plate 221, the floor longitudinal beam inner plate 23, and the transition plate 56, thus forming a multi-force transmission structure. This effectively improves the rigidity and strength of the vehicle body structure 100, resists torsional deformation of the vehicle body, absorbs and reduces vibration excitation from the ground to the vehicle body direction, reduces deformation in this area, and achieves sound insulation, thereby improving overall vehicle performance and comfort.

[0079] Thus, by setting a transition plate 56 between the first connecting sub-plate 52 and the connecting main plate 51, a reinforcing cavity 57 can be formed between the transition plate 56, the floor longitudinal beam 2, and the rear wheel arch inner plate 1, which can improve the structural strength of the three. Compared with not setting the transition plate 56, that is, the first connecting sub-plate 52 and the connecting main plate 51 are directly bent and connected, the first connecting sub-plate 52 can be directly attached to the rear wheel arch inner plate 1, and the connecting main plate 51 can be directly attached to the floor longitudinal beam 2. This can reduce the cavity setting of the vehicle body structure 100 at the rear wheel arch connecting plate 5, reduce the strength and stability of the vehicle body structure 100, and reduce the bending strength of the first connecting sub-plate 52 and the connecting main plate 51, thereby reducing the structural strength of the rear wheel arch connecting plate 5. This is not conducive to strengthening the shock absorber at the rear wheel arch inner plate 1, and is not conducive to improving the durability of the rear wheel arch connecting plate 5.

[0080] In some embodiments, a shock absorber support reinforcement plate 8 is connected to the outer side of the rear wheel arch inner plate 1, and the rear wheel arch connecting plate 5 is connected to the shock absorber support reinforcement plate 8 in the inward and outward directions.

[0081] Specifically, the shock absorber support reinforcement plate 8 can be used to install the shock absorber. The shock absorber support reinforcement plate 8 is installed on the outer side of the rear wheel arch inner plate 1 to facilitate connection with the shock absorber. The shock absorber support reinforcement plate 8 can reinforce each other with the rear wheel arch inner plate 1. The rear wheel arch connecting plate 5 is connected to the inner side of the rear wheel arch inner plate 1, and the rear wheel arch connecting plate 5 is connected to the shock absorber support reinforcement plate 8 in the inward and outward directions. The shock absorber support reinforcement plate 8 can be structurally reinforced by the rear wheel arch connecting plate 5, thereby improving the installation strength of the shock absorber. In this way, during vehicle operation, the bumps and vibrations caused by uneven ground are transmitted to the vehicle body and seats through the shock absorber. By enhancing the installation strength of the shock absorber, the dynamic and static stiffness, durability, and NVH of this structure can be improved, thereby improving the stability and durability of the vehicle.

[0082] And such as Figure 9 As shown, two connecting legs 81 are formed on the lower side of the shock absorber support reinforcing plate 8. Both connecting legs 81 are connected to the outer side of the floor longitudinal beam 2. The two connecting legs 81 can be spaced apart, that is, the shock absorber support reinforcing plate 8 and the floor longitudinal beam 2 can be connected at two locations through the two spaced-apart connecting legs 81. Figure 2 As shown, the shock absorber support reinforcement plate 8 is located on the outside of the rear wheel arch inner plate 1, which facilitates the connection between the shock absorber support reinforcement plate 8 and the outside of the floor longitudinal beam 2. The upper area of ​​the shock absorber support reinforcement plate 8 is connected to the rear wheel arch inner plate 1. That is, by connecting the upper area of ​​the shock absorber support reinforcement plate 8 to the rear wheel arch inner plate 1, the shock absorber support reinforcement plate 8 can be connected to the rear wheel arch inner plate 1.

[0083] The shock absorber support reinforcement plate 8 is connected to the floor longitudinal beam 2, the rear wheel cover inner plate 1 and the rear wheel cover connecting plate 5 respectively. Through multiple structures, the installation strength of the shock absorber support reinforcement plate 8 can be strengthened, which is conducive to improving the installation strength of the shock absorber.

[0084] Furthermore, the middle part of the shock absorber support reinforcement plate 8 can be detachably connected to the rear wheel cover connecting plate 5 by bolts or other fasteners. The upper part of the shock absorber support reinforcement plate 8 can be riveted to the inner plate 1 of the rear wheel cover. Additionally, the two connecting legs 81 of the shock absorber support reinforcement plate 8 can be detachably connected to the floor longitudinal beam 2 by bolts or other fasteners.

[0085] The rear wheel arch connecting plate 5 and the floor beam 4 can be detachably connected by bolts and other fasteners. The rear wheel arch connecting plate 5 is detachably connected to the shock absorber support reinforcing plate 8 and the rear wheel arch inner plate 1, respectively, which facilitates the installation and disassembly of the rear wheel arch connecting plate 5 and the maintenance of the rear wheel arch connecting plate 5. The bolt connection process is shared on a platform.

[0086] The shock absorber support reinforcing plate 8 is provided with a first reinforcing rib 82 and a second reinforcing rib 83. The first reinforcing rib 82 extends vertically, and the second reinforcing rib 83 is constructed as a ring-shaped reinforcing rib.

[0087] Specifically, the shock absorber support reinforcing plate 8 is provided with a first reinforcing rib 82, which extends vertically. The first reinforcing rib 82 can strengthen the structure of the shock absorber support reinforcing plate 8 in the vertical direction. The shock absorber support reinforcing plate 8 is also provided with a second reinforcing rib 83, which is constructed as a ring-shaped reinforcing rib. The second reinforcing rib 83 can strengthen the structure of the shock absorber support reinforcing plate 8 in a ring. The first reinforcing rib 82 and the second reinforcing rib 83 can effectively improve the structural strength of the shock absorber support reinforcing plate 8.

[0088] The first reinforcing rib 82 can be multiple, located on the lower side and middle area of ​​the damper support reinforcing plate 8, and can be spaced apart in the width direction of the damper support reinforcing plate 8. That is, multiple first reinforcing ribs 82 can structurally reinforce multiple positions of the damper support reinforcing plate 8 to improve the reinforcing effect of multiple first reinforcing ribs 82 on the damper support reinforcing plate 8. The first reinforcing rib 82 can be constructed as strip reinforcing ribs. The second reinforcing rib 83 can be multiple, and can be spaced apart in the upper area of ​​the damper support reinforcing plate 8. That is, multiple second reinforcing ribs 83 can structurally reinforce multiple positions of the damper support reinforcing plate 8 to improve the reinforcing effect of multiple second reinforcing ribs 83 on the damper support reinforcing plate 8. The second reinforcing ribs 83 and the first reinforcing ribs 82 can be distributed crosswise, which can also improve the reinforcing effect of the damper support reinforcing plate 8.

[0089] Furthermore, the shock absorber support reinforcement plate 8 can be manufactured using an integrated die-casting process, which improves the structural strength and production efficiency of the shock absorber support reinforcement plate 8.

[0090] Thus, the main surface of the shock absorber support reinforcement plate 8 is designed with a first reinforcing rib 82 whose overall trend is in the Z direction of the vehicle body to achieve the transmission of impact force. The area corresponding to the subframe shock absorber is designed with a ring-shaped umbrella topology second reinforcing rib 83, which conforms to the mechanical optimization structure, enhances mechanical performance, reduces structural damage and deformation, and improves the rigidity, durability and NVH of the assembly.

[0091] In some embodiments, a plurality of support plates 22 are spaced apart along the length of the longitudinal beam reinforcing cavity 21 to divide the longitudinal beam reinforcing cavity 21 into a plurality of partition cavities 212.

[0092] Specifically, such as Figure 3As shown, the floor longitudinal beam 2 extends longitudinally along the vehicle, the longitudinal beam reinforcing cavity 21 extends longitudinally along the vehicle, and multiple support plates 22 are spaced apart along the length direction of the longitudinal beam reinforcing cavity 21. That is, multiple support plates 22 can be distributed spaced apart along the longitudinal extension direction of the longitudinal beam reinforcing cavity 21, so that a partition cavity 212 can be formed between two adjacent support plates 22. In other words, the longitudinal beam reinforcing cavity 21 is divided into multiple partition cavities 212 by multiple support plates 22, thereby improving the torsional and bending performance of the floor longitudinal beam 2, greatly reducing the deformation of the body mating area structure when subjected to vibration and impact forces from the rear suspension, improving the stability of the body structure 100, and improving the overall vehicle comfort.

[0093] Meanwhile, in the event of a frontal collision, it achieves segmented resistance to impact force, reduces impact deformation, and improves frontal collision performance. In the event of a side collision, the segmented multi-cavity structure provides support and reinforcement. Each support plate 22 is equivalent to a force transmission path, which greatly reduces the impact deformation in the passenger compartment during a collision and improves the vehicle's safety performance.

[0094] This utility model also proposes a vehicle.

[0095] The vehicle according to the embodiments of the present invention includes a body structure 100 of any of the above embodiments. The body structure 100 is an important structure of the vehicle. The body structure 100 includes: a rear wheel arch inner panel 1, a floor longitudinal beam 2, a floor 3, a floor transverse beam 4, and a rear wheel arch connecting plate 5. By setting the rear wheel arch connecting plate 5 to the upper part of the floor longitudinal beam 2, and the inner end of the rear wheel arch connecting plate 5 connected to the floor transverse beam 4 and the outer end connected to the rear wheel arch inner panel 1, the rear wheel arch inner panel 1, the rear wheel arch connecting plate 5, and the floor transverse beam 4 form a transverse reinforcing structure, which can make the body structure 100 more robust. The structure is presented as a cross-connection reinforcement structure, and a longitudinal beam reinforcement cavity 21 is formed in the floor longitudinal beam 2. At least one support plate 22 is provided in the longitudinal beam reinforcement cavity 21 and is supported directly below the rear wheel arch connecting plate 5. That is, the structural strength of the floor longitudinal beam 2 and the rear wheel arch connecting plate 5 can be enhanced by at least one support plate 22, thereby improving the strength of the cross-connection reinforcement structure, improving the rigidity and strength of the vehicle body structure 100, thereby strengthening the installation strength of the shock absorber, improving the dynamic and static stiffness, durability and NVH of this structure, so as to improve the driving stability and comfort of the vehicle.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0097] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle body structure, characterized in that, include: Rear wheel arch inner panel (1); Floor longitudinal beam (2) and floor (3), the floor (3) being located inside the rear wheel arch inner plate (1), the floor longitudinal beam (2) being connected to the bottom of the rear wheel arch inner plate (1) and to the outside of the floor (3); Floor crossbeam (4) and rear wheel cover connecting plate (5), the floor crossbeam (4) is installed above the floor (3), the rear wheel cover connecting plate (5) is installed above the floor longitudinal beam (2), the inner end of the rear wheel cover connecting plate (5) is connected to the floor crossbeam (4) and the outer end is connected to the rear wheel cover inner plate (1); The floor longitudinal beam (2) has a longitudinal beam reinforcing cavity (21), and a plurality of support plates (22) are provided in the longitudinal beam reinforcing cavity (21). At least one of the plurality of support plates (22) is located directly below the rear wheel cover connecting plate (5).

2. The vehicle body structure according to claim 1, characterized in that, The support plate (22) includes a first support plate (221), which is located directly below the rear wheel arch connecting plate (5) and is supported between the top and bottom walls of the longitudinal beam reinforcing cavity (21).

3. The vehicle body structure according to claim 2, characterized in that, The first support plate (221) includes a top plate (2211), a middle plate (2212), and a bottom plate (2213) connected in sequence. The top plate (2211) is connected to the top wall of the longitudinal beam reinforcing cavity (21), the bottom plate (2213) is connected to the bottom wall of the longitudinal beam reinforcing cavity (21), and the middle plate (2212) is spaced apart from the two inner sidewalls of the longitudinal beam reinforcing cavity (21) and together defines the longitudinal beam sub-cavities (211) located on both sides of the middle plate (2212).

4. The vehicle body structure according to claim 2, characterized in that, The support plate (22) further includes a second support plate (222) and a third support plate (223). The second support plate (222) and the third support plate (223) are longitudinally spaced apart on both sides of the first support plate (221). The second support plate (222) and the third support plate (223) are respectively supported on the inner peripheral wall of the longitudinal beam reinforcing cavity (21). The floor longitudinal beam (2) is provided with a first connector (6) at the bottom of the second support plate (222) and a second connector (7) at the bottom of the third support plate (223). The first connector (6) and the second connector (7) are respectively used to connect to the subframe.

5. The vehicle body structure according to claim 4, characterized in that, The support plate (22) further includes a fourth support plate (224) and a fifth support plate (225). The fourth support plate (224) and the fifth support plate (225) are spaced apart on the side of the third support plate (223) away from the second support plate (222). The fourth support plate (224) is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity (21), and the fifth support plate (225) is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity (21). And / or, the support plate (22) further includes a sixth support plate (226) and a seventh support plate (227) connected together. The sixth support plate (226) is supported on the inner peripheral wall of the longitudinal beam reinforcing cavity (21), and the seventh support plate (227) is supported on the bottom wall and inner side wall of the longitudinal beam reinforcing cavity (21). The sixth support plate (226) and the seventh support plate (227) are both located between the first support plate (221) and the second support plate (222).

6. The vehicle body structure according to claim 1, characterized in that, The rear wheel arch connecting plate (5) includes a connecting main plate (51), a first connecting sub-plate (52), and a second connecting sub-plate (53). The first connecting sub-plate (52) and the second connecting sub-plate (53) are bent and connected to both ends of the connecting main plate (51). The first connecting sub-plate (52) is connected to the inner plate (1) of the rear wheel arch, and the second connecting sub-plate (53) is connected to the floor crossbeam (4). The connecting main plate (51) is connected to the upper side of the floor longitudinal beam (2). The connection between the main board (51) and the first connecting sub-board (52) is provided with a plurality of spaced-apart first reinforcing structures (54), and / or the second connecting sub-board (53) is provided with a plurality of intersecting second reinforcing structures (55), the second reinforcing structures (55) and the first reinforcing structures (54) being located on different sides of the rear wheel arch connecting plate (5).

7. The vehicle body structure according to claim 6, characterized in that, The first connecting subplate (52) and the connecting main plate (51) are bent and connected by a transition plate (56). The transition plate (56) includes a first transition plate (561) and a second transition plate (562) bent and connected. The first transition plate (561) is spaced apart from the rear wheel arch inner plate (1) and the second transition plate (562) is spaced apart from the floor longitudinal beam (2) to jointly define a reinforcing cavity (57). The first transition plate (561) is bent and connected to the connecting main plate (51), and the second transition plate (562) is bent and connected to the first connecting subplate (52). The reinforcing cavity (57) is distributed on the upper side of the longitudinal beam reinforcing cavity (21).

8. The vehicle body structure according to claim 1, characterized in that, The outer side of the rear wheel arch inner plate (1) is connected to a shock absorber support reinforcement plate (8). The rear wheel arch connecting plate (5) is connected to the shock absorber support reinforcement plate (8) in the inward and outward directions. Two connecting legs (81) are formed on the lower side of the shock absorber support reinforcement plate (8). Both connecting legs (81) are connected to the outer side of the floor longitudinal beam (2). The upper area of ​​the shock absorber support reinforcement plate (8) is connected to the rear wheel arch inner plate (1). The shock absorber support reinforcement plate (8) is provided with a first reinforcing rib (82) and a second reinforcing rib (83). The first reinforcing rib (82) extends vertically, and the second reinforcing rib (83) is constructed as a ring-shaped reinforcing rib.

9. The vehicle body structure according to claim 1, characterized in that, The multiple support plates (22) are spaced apart along the length of the longitudinal beam reinforcing cavity (21) to divide the longitudinal beam reinforcing cavity (21) into multiple partition cavities (212).

10. A vehicle, characterized in that, The vehicle body structure includes any one of claims 1-9.

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