Vehicle body rear floor and vehicle having the same

Abstract

The application discloses a vehicle body rear floor and a vehicle with the same. The vehicle body rear floor comprises two rear longitudinal beams, the two rear longitudinal beams extending forward and backward and being arranged at intervals left and right; a rear floor cross beam, the rear floor cross beam extending left and right and being connected with the two rear longitudinal beams at two ends respectively; a rear floor, the rear floor being connected between the two rear longitudinal beams and being located at the front side of the rear floor cross beam; and a spare tire pool, the spare tire pool being connected between the two rear longitudinal beams and being located at the rear side of the rear floor cross beam, wherein the two rear longitudinal beams, the rear floor cross beam, the rear floor and the spare tire pool are integrally formed. According to the vehicle body rear floor, the number of parts, molds and welding points required for production can be reduced, the process complexity of the vehicle body rear floor is reduced, and then the overall weight and production cost of the vehicle body rear floor can be reduced, the production rate and overall quality are improved, so that the production cost of the vehicle can be reduced, the production speed and market competitiveness of the vehicle are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle body rear floor and a vehicle with the same. BACKGROUND

[0002] At present, the structure of the vehicle body rear floor is mostly formed by welding and assembling a plurality of stamping parts into a whole, wherein the structure of the vehicle body rear floor in the prior art is mainly formed by welding a rear floor left longitudinal beam and a rear floor right longitudinal beam, welding a rear floor cross beam, and then welding the rear floor body to form a rear floor assembly. This connection mode is complex in structure, and the number of parts is large, thereby causing too many welding quality detection points and low production efficiency. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a vehicle body rear floor which can reduce the number of parts, molds and welding points required for production, reduce the process complexity of the vehicle body rear floor, thereby reducing the overall weight and production cost of the vehicle body rear floor, improving the production rate, reducing the risk of stress cracking of the vehicle body rear floor, and improving the overall quality of the vehicle body rear floor, thereby reducing the production cost of the vehicle, improving the production speed and market competitiveness of the vehicle.

[0004] The present application also proposes a vehicle with the above vehicle body rear floor.

[0005] According to the vehicle body rear floor of the first aspect of the present application, two rear longitudinal beams extend forward and backward and are arranged with a left-right interval, a rear floor cross beam extends leftward and rightward and is connected to the two rear longitudinal beams at both ends, a rear floor is connected between the two rear longitudinal beams and located on the front side of the rear floor cross beam, and a spare tire pool is connected between the two rear longitudinal beams and located on the rear side of the rear floor cross beam, wherein the two rear longitudinal beams, the rear floor cross beam, the rear floor and the spare tire pool are integrally formed.

[0006] According to the vehicle body rear floor of the present application, by integrally forming the two rear longitudinal beams, the rear floor cross beam, the rear floor and the spare tire pool, the process complexity of the vehicle body rear floor can be reduced, the production convenience of the floor body structure can be improved, the number of parts, molds and welding points required for producing the vehicle body rear floor can be reduced, thereby the overall weight and production cost of the vehicle body rear floor can be reduced, the risk of stress cracking of the vehicle body rear floor can be reduced, the overall quality of the vehicle body rear floor can be improved, and thus the production speed of the vehicle can be improved, the production cost of the vehicle can be reduced, and the market competitiveness of the vehicle can be improved.

[0007] According to some embodiments of the present application, the two rear longitudinal beams, the rear floor cross beam, the rear floor and the spare tire pool are integrally formed by stamping.

[0008] According to some embodiments of the present invention, the plate thickness of the rear longitudinal beam is 1mm-1.5mm; the plate thickness of at least one of the rear floor, the rear floor crossbeam and the spare tire pool is 0.6mm-1mm.

[0009] According to some embodiments of the present invention, the rear longitudinal beam includes an inner side plate, an outer side plate, and a bottom plate. The inner side plate and the outer side plate are vertically arranged and extend front to back. The inner side plate and the outer side plate are arranged at left and right intervals. The bottom plate is horizontally arranged and connected between the lower end of the inner side plate and the lower end of the outer side plate.

[0010] According to some embodiments of the present invention, in the vertical direction, the distance between the upper surface of the bottom plate and the upper edge of the inner side plate or the upper edge of the outer side plate is 150mm-170mm.

[0011] According to some embodiments of the present invention, the rear floor of the vehicle body further includes: a plurality of reinforcing plates, wherein the plurality of reinforcing plates are fixedly connected to the rear longitudinal beam.

[0012] According to some embodiments of the present invention, the plurality of reinforcing plates include a first reinforcing plate disposed at the rear end of the rear longitudinal beam, the first reinforcing plate being disposed on the upper side of the bottom plate portion and connecting the inner plate portion and the outer plate portion.

[0013] According to some embodiments of the present invention, the plurality of reinforcing plates include a second reinforcing plate, the second reinforcing plate being connected to the upper side of the base plate portion and between the inner plate portion and the outer plate portion, the second reinforcing plate extending front and rear, the front end of the second reinforcing plate extending to the front end of the rear longitudinal beam, and the rear end of the second reinforcing plate extending to the rear side of the rear floor beam.

[0014] According to some embodiments of the present invention, the two ends of the rear floor beam are respectively connected to the inner side plates of the two rear longitudinal beams, and the plurality of reinforcing plates include a third reinforcing plate, which is disposed on at least one side surface of the inner side plate in the thickness direction, and the ends of the third reinforcing plate connected to the rear floor beam and the inner side plate are directly opposite each other.

[0015] According to some embodiments of the present invention, the rear floor of the vehicle body further includes: a rear shock absorber tower bracket, the rear shock absorber tower bracket being connected to the rear longitudinal beam, the rear shock absorber tower bracket including: a second support plate, the second support plate being horizontally disposed on the lower side of the bottom plate and fixed to the bottom plate, the second support plate having a shock absorber tower mounting portion formed thereon; and a first support plate, the first support plate being connected to the second support plate and extending upward, the first support plate being located on the outer side of the outer side plate and fixedly connected to the outer surface of the outer side plate.

[0016] According to some embodiments of the present invention, the end of the second support plate opposite to the first support plate extends to overlap and connect with the rear floor beam.

[0017] The vehicle according to the second aspect of the invention includes a rear floor of the vehicle body according to the first aspect of the invention.

[0018] According to the vehicle of the present invention, the overall performance of the vehicle is improved by providing the rear floor of the vehicle body as described in the first aspect.

[0019] Additional aspects and advantages of the 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

[0020] Figure 1 This is a schematic diagram of the rear floor of a vehicle according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the rear floor of the vehicle body from another angle according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the rear floor of the vehicle body from another angle according to an embodiment of the present invention;

[0023] Figure 4 A partial schematic diagram of the rear floor of a vehicle according to an embodiment of the present invention;

[0024] Figure 5 A partial schematic diagram of the rear floor of a vehicle body from another angle according to an embodiment of the present invention;

[0025] Figure 6 A partial schematic diagram of the rear floor of a vehicle body from another angle according to an embodiment of the present invention.

[0026] Figure label:

[0027] 100. Rear floor of the vehicle;

[0028] 10. Rear longitudinal beam; 11. Inner side plate; 12. Outer side plate; 13. Bottom plate;

[0029] 20. Rear floor beam;

[0030] 30. Rear floor;

[0031] 40. Spare tire storage tank;

[0032] 50. Reinforcing plate; 51. First reinforcing plate; 52. Second reinforcing plate; 53. Third reinforcing plate;

[0033] 60. Rear shock absorber tower support; 62. Second support plate; 61. First support plate. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] The following is for reference. Figures 1-6 The rear floor 100 of a vehicle body according to a first aspect embodiment of the present invention is described.

[0036] like Figure 1 As shown, the rear floor 100 of the vehicle body according to a first aspect embodiment of the present invention includes: two rear longitudinal beams 10, a rear floor crossbeam 20, a rear floor 30, and a spare tire well 40. The two rear longitudinal beams 10 extend front to back and are arranged at intervals on the left and right. The rear floor crossbeam 20 extends left to right and its two ends are respectively connected to the two rear longitudinal beams 10. The rear floor 30 is connected between the two rear longitudinal beams 10 and is located in front of the rear floor crossbeam 20. The spare tire well 40 is connected between the two rear longitudinal beams 10 and is located in rear of the rear floor crossbeam 20. The two rear longitudinal beams 10, the rear floor crossbeam 20, the rear floor 30, and the spare tire well 40 are integrally formed.

[0037] Specifically, the rear longitudinal beam 10 is an important component that can support the trunk and rear mounting parts; the rear floor crossbeam 20 can be used to ensure the torsional rigidity of the frame and bear longitudinal loads, and can also support the main components of the car; the rear floor 30 is the floor part at the rear of the passenger compartment and can be used to install the rear seats; the spare tire pool 40 is mainly used to store the spare tire.

[0038] The two rear longitudinal beams 10, the rear floor crossbeam 20, the rear floor 30, and the spare tire well 40 are integrally molded, which reduces the connection steps between the rear longitudinal beams 10, the rear floor crossbeam 20, the rear floor 30, and the spare tire well 40. This reduces the process complexity of the rear floor 100 and improves the production convenience of the floor body structure. At the same time, it also reduces the number of molds, reducing mold opening costs and cycles. In addition, it reduces the number of parts and welds required for connecting the above components, thereby reducing the overall weight and production cost of the rear floor 100, reducing the risk of cracking under stress, and improving the overall quality of the rear floor 100. This, in turn, increases the vehicle's production speed, reduces the vehicle's production cost, and enhances the vehicle's market competitiveness.

[0039] According to an embodiment of the present invention, the rear floor 100 of the vehicle body is integrally formed by two rear longitudinal beams 10, a rear floor crossbeam 20, a rear floor 30, and a spare tire well 40. This reduces the process complexity of the rear floor 100 and improves the production convenience of the floor body structure. At the same time, it also reduces the number of parts, molds, and welding points required to produce the rear floor 100, thereby reducing the overall weight and production cost of the rear floor 100, reducing the risk of cracking under stress, and improving the overall quality of the rear floor 100. This, in turn, increases the vehicle production speed, reduces the vehicle production cost, and enhances the vehicle's market competitiveness.

[0040] According to some embodiments of the present invention, the two rear longitudinal beams 10, the rear floor crossbeam 20, the rear floor 30, and the spare tire well 40 are integrally stamped. Stamping refers to a processing method in which external force is applied to sheet metal, strip, tube, and profiles using a press and molds to cause plastic deformation or separation, thereby obtaining a workpiece (stamped part) of the required shape and size. Stamping is a simple and convenient process, reducing material consumption and thus lowering the manufacturing cost of the rear floor 100. Simultaneously, stamped parts are lightweight and have good rigidity, ensuring the strength of the rear floor 100 while reducing its overall weight, thereby reducing vehicle load. Furthermore, stamped parts, stamped according to molds, have high dimensional accuracy and good interchangeability, meeting general assembly and usage requirements without further machining. Additionally, during the stamping process, the material surface remains undamaged, resulting in good surface quality and a smooth, aesthetically pleasing appearance, which facilitates installation, welding, and other processes.

[0041] According to some embodiments of the present invention, the plate thickness of the rear longitudinal beam 10 is 1mm-1.5mm. For example, the plate thickness of the rear longitudinal beam 10 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm. The rear longitudinal beam 10 is an important component supporting the trunk and rear mounting parts, requiring high strength. Therefore, setting the plate thickness of the rear longitudinal beam 10 to 1mm-1.5mm ensures the structural strength of the rear longitudinal beam 10, thereby ensuring the overall performance of the rear floor 100 of the vehicle body. Furthermore, the plate thickness of the rear longitudinal beam 10 can be selected according to actual needs.

[0042] According to some embodiments of the present invention, the plate thickness of at least one of the rear floor 30, the rear floor crossbeam 20, and the spare tire well 40 is 0.6mm-1mm. The plate thickness of the rear floor 30, the rear floor crossbeam 20, and the spare tire well 40 can be selected according to their own performance requirements, so that the plate thickness meets their own performance requirements while reducing overall cost and weight, thereby reducing vehicle production costs and load, and thus improving the vehicle's market competitiveness.

[0043] For example, the thickness of the board material of at least one of the rear floor 30, the rear floor beam 20 and the spare tire pool 40 can be 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 1 mm.

[0044] Furthermore, the rear longitudinal beam 10 has a different sheet metal thickness than the rear floor 30, rear floor crossbeam 20, and spare tire pool 40. The two rear longitudinal beams 10, rear floor crossbeam 20, rear floor 30, and spare tire pool 40 are integrally formed. As a result, the rear floor 100 of the vehicle can be integrally formed by stamping with a variable thickness sheet metal based on performance requirements. This can increase the flexibility of the rear floor 100 of the vehicle, enabling it to meet the needs of various vehicle architectures and thus improve its market competitiveness.

[0045] According to some embodiments of the present invention, such as Figure 4 As shown, the rear longitudinal beam 10 includes an inner side plate 11, an outer side plate 12, and a bottom plate 13. The inner side plate 11 and the outer side plate 12 are vertically arranged and extend front to back, with the inner side plate 11 and the outer side plate 12 spaced apart laterally. The bottom plate 13 is horizontally arranged and connected between the lower ends of the inner side plate 11 and the lower ends of the outer side plate 12. Specifically, the rear longitudinal beam 10 extends front to back and is formed as a groove with an upper opening. The cross-section of the rear longitudinal beam 10 is U-shaped. This facilitates the connection of the rear longitudinal beam 10 with other components. At the same time, the cavity formed by the rear longitudinal beam 10 can be used to transmit and absorb vibration energy, thereby improving the overall NVH performance of the vehicle.

[0046] According to some embodiments of the present invention, in the vertical direction, the distance between the upper surface of the bottom plate portion 13 and the upper edge of the inner side plate portion 11 or the upper edge of the outer side plate portion 12 is 150mm-170mm. That is, in the vertical direction, the depth range of the groove inside the rear longitudinal beam 10 is [150mm, 170mm]. This can reduce the possibility of cracks occurring during the forming of the longitudinal beam and ensure the production safety of the rear floor 100 of the vehicle body.

[0047] For example, in the vertical direction, the distance between the upper surface of the bottom plate portion 13 and the upper edge of the inner side plate portion 11 or the upper edge of the outer side plate portion 12 can be 150mm, 160mm or 170mm.

[0048] According to some embodiments of the present invention, such as Figure 1 As shown, the rear floor 100 of the vehicle body also includes a plurality of reinforcing plates 50, which are fixedly connected to the rear longitudinal beam 10. For example, there may be two, three or more reinforcing plates 50. The fixed connection of the plurality of reinforcing plates 50 to the rear longitudinal beam 10 can increase the structural strength of the rear longitudinal beam 10, thereby improving the overall performance of the rear floor 100 of the vehicle body.

[0049] Optionally, there are various ways to connect the reinforcing plate 50 to the rear floor 100 of the vehicle body, such as welding, riveting or screwing.

[0050] According to some embodiments of the present invention, such as Figure 1 As shown, the plurality of reinforcing plates 50 include a first reinforcing plate 51, which is disposed at the rear end of the rear longitudinal beam 10. The first reinforcing plate 51 is disposed on the upper side of the bottom plate portion 13 and connects the inner plate portion 11 and the outer plate portion 12. In this way, the first reinforcing plate 51 can increase the supporting strength of the rear longitudinal beam 10 in the lateral direction, and can effectively reduce the problem of deformation and instability of the rear longitudinal beam 10 due to external forces.

[0051] For example Figures 1-2 As shown, the first reinforcing plate 51 is disposed in the groove of the rear longitudinal beam 10. The first reinforcing plate 51 is connected to the bottom plate portion 13, the inner side plate portion 11 and the outer side plate portion 12 respectively. This can increase the contact area between the first reinforcing plate 51 and the rear longitudinal beam 10, further increase the support strength of the first reinforcing plate 51 for the rear longitudinal beam 10, and thus further improve the overall performance of the rear longitudinal beam 10.

[0052] According to some embodiments of the present invention, such as Figure 1 As shown, the multiple reinforcing plates 50 include a second reinforcing plate 52. The second reinforcing plate 52 is connected to the upper side of the bottom plate portion 13 and between the inner plate portion 11 and the outer plate portion 12. The second reinforcing plate 52 extends front and rear, with its front end extending to the front end of the rear longitudinal beam 10 and its rear end extending to the rear side of the rear floor crossbeam 20. This increases the lateral support strength of the front part of the rear longitudinal beam 10, thereby effectively reducing the problem of deformation and instability of the front part of the rear longitudinal beam 10 due to external forces. At the same time, it also increases the overall performance of the mounting point between the rear longitudinal beam 10 and the rear subframe, increases the local stiffness at the connection point between the rear longitudinal beam 10 and the rear subframe, and thus improves the assembly stability between the rear subframe and the rear longitudinal beam 10, thereby improving the load-bearing strength and structural stability of the rear longitudinal beam 10.

[0053] Furthermore, for example Figure 2 As shown, the first reinforcing plate 51 and the second reinforcing plate 52 are arranged at intervals in the front-rear direction to support the rear longitudinal beam 10 in sections. This ensures the structural strength of the rear floor 100 of the vehicle body while reducing the production difficulty of the rear floor 100. In addition, different reinforcing plates 50 with different structures can be selected according to the strength requirements of different positions, thereby increasing the flexibility and applicability of the rear floor 100 of the vehicle body, so that it can meet the needs of various vehicle architectures and thus improve market competitiveness.

[0054] According to some embodiments of the present invention, such as Figure 1As shown, the two ends of the rear floor beam 20 are respectively connected to the inner side plate portions 11 of the two rear longitudinal beams 10. Multiple reinforcing plates 50 include a third reinforcing plate 53, which is disposed on at least one surface of the inner side plate portion 11 in the thickness direction, and the ends of the third reinforcing plate 53 connected to the rear floor beam 20 and the inner side plate portion 11 are aligned horizontally. This increases the continuity of the inner side plate portion 11, thereby increasing its force transmission effect and support strength, thus ensuring superior overall performance of the rear longitudinal beam 10.

[0055] According to some embodiments of the present invention, such as Figures 1-3 As shown, the rear floor 100 of the vehicle body also includes: a rear shock absorber tower bracket 60, which is connected to the rear longitudinal beam 10. The rear shock absorber tower bracket 60 includes: a second support plate 62, which is horizontally disposed on the lower side of the base plate portion 13 and fixed to the base plate portion 13, and a shock absorber tower mounting portion is formed on the second support plate 62; and a first support plate 61, which is connected to the second support plate 62 and extends upward, and is located on the outer side of the outer side plate portion 12 and fixedly connected to the outer surface of the outer side plate portion 12.

[0056] Specifically, the rear shock absorber tower bracket 60 is connected to the rear shock absorber and can withstand the impact of the road surface. The rear shock absorber tower bracket 60 is also connected to the rear longitudinal beam 10, which can transmit the force after the action of the rear shock absorber to the rear longitudinal beam 10 through the rear shock absorber tower bracket 60. This can reduce the stress at the rear shock absorber tower bracket 60, improve the dynamic stiffness of the rear shock absorber tower bracket 60, and improve the stability and reliability of the shock absorber installation.

[0057] Specifically, the second support plate 62 is connected to the first support plate 61 to form an L-shape. The second support plate 62 and the first support plate 61 are respectively connected to the bottom plate portion 13 and the outer side plate portion 12 of the rear longitudinal beam 10. In this way, the contact area between the rear shock absorber tower support 60 and the rear longitudinal beam 10 can be increased, thereby improving the force distribution, further reducing the force at the rear shock absorber tower support 60, increasing the dynamic stiffness of the rear shock absorber tower support 60, and improving the stability and reliability of the shock absorber installation.

[0058] According to some embodiments of the present invention, such as Figure 3 As shown, the end of the second support plate 62 facing away from the first support plate 61 extends to overlap and connect with the rear floor crossbeam 20. Therefore, the force transmitted to the rear shock absorber tower bracket 60 can continue to be transmitted in two directions. One transmission path is: transmitted along the second support plate 62 to the rear floor crossbeam 20, and the other transmission path is: transmitted along the first support plate 61 to the rear longitudinal beam 10. This can distribute the force to the entire rear floor 100 of the vehicle body, greatly improving the dynamic stiffness of the rear shock absorber tower bracket 60 and enhancing the overall NVH performance of the vehicle.

[0059] A vehicle according to a second aspect of the present invention includes a rear floor 100 according to a first aspect of the present invention.

[0060] According to an embodiment of the present invention, the overall performance of the vehicle is improved by providing the rear floor 100 of the first aspect embodiment described above.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear floor vehicle body structure, characterized in that, include: Two rear longitudinal beams, which extend front to back and are spaced apart to the left and right; The rear floor beam extends to the left and right and its two ends are respectively connected to the two rear longitudinal beams; The rear floor is connected between the two rear longitudinal beams and is located in front of the rear floor crossbeam; A spare tire well, which is connected between the two rear longitudinal beams and located behind the rear floor crossbeam. The two rear longitudinal beams, the rear floor crossbeam, the rear floor, and the rear spare tire well are integrally stamped. The rear longitudinal beam includes an inner side plate, an outer side plate, and a bottom plate. The inner side plate and the outer side plate are vertically arranged and extend front to back. The inner side plate and the outer side plate are arranged at left to right intervals. The bottom plate is horizontally arranged and connected between the lower ends of the inner side plate and the lower ends of the outer side plate. The rear floor vehicle structure further includes: a rear shock absorber tower bracket, which is connected to the rear longitudinal beam. The rear shock absorber tower bracket includes: a first support plate and a second support plate. The first support plate is horizontally disposed on the lower side of the bottom plate and fixed to the bottom plate. A shock absorber tower mounting portion is formed on the first support plate. The second support plate is connected to the first support plate and extends upward. The second support plate is located on the outer side of the outer side plate and is fixedly connected to the outer surface of the outer side plate.

2. The rear floor vehicle structure according to claim 1, characterized in that, The plate thickness of the rear longitudinal beam is 1mm-1.5mm; and / or, the plate thickness of at least one of the rear floor, the rear floor crossbeam and the rear spare tire well is 0.6mm-1mm.

3. The rear floor vehicle structure according to claim 1, characterized in that, In the vertical direction, the distance between the upper surface of the bottom plate and the upper edge of the inner side plate or the upper edge of the outer side plate is 150mm-170mm.

4. The rear floor vehicle body structure according to claim 1, characterized in that, Also includes: Multiple reinforcing plates are fixedly connected to the rear longitudinal beam.

5. The rear floor vehicle structure according to claim 4, characterized in that, The plurality of reinforcing plates include a first reinforcing plate, which is disposed at the rear end of the rear longitudinal beam and is located on the upper side of the bottom plate and connected between the inner plate and the outer plate.

6. The rear floor vehicle structure according to claim 4, characterized in that, The plurality of reinforcing plates include a second reinforcing plate, which is connected to the upper side of the base plate and between the inner plate and the outer plate. The second reinforcing plate extends front to back, with its front end extending to the front end of the rear longitudinal beam and its rear end extending to the rear side of the rear floor beam.

7. The rear floor vehicle structure according to claim 4, characterized in that, The two ends of the rear floor beam are respectively connected to the inner side plates of the two rear longitudinal beams. The plurality of reinforcing plates include a third reinforcing plate disposed on at least one side surface of the inner side plate in the thickness direction, and the ends of the third reinforcing plate that are connected to the rear floor beam and the inner side plate are directly opposite each other.

8. The rear floor vehicle structure according to claim 1, characterized in that, The end of the first support plate opposite to the second support plate extends to overlap and connect with the rear floor beam.

9. A vehicle, characterized in that, Includes the rear floor body structure according to any one of claims 1-8.

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