CN117104352A - Floor behind automobile body and have its vehicle - Google Patents

Abstract

The invention discloses a vehicle body rear floor and a vehicle with the same, wherein the vehicle body rear floor comprises: the two rear longitudinal beams extend back and forth and are arranged at intervals left and right; the rear floor cross beam extends leftwards and rightwards, and two ends of the rear floor cross beam are respectively connected with the two rear longitudinal beams; the rear floor is connected between the two rear longitudinal beams and positioned at the front side of the rear floor cross beam; the spare tire pool is connected between the two rear longitudinal beams and positioned 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 rear floor of the automobile body, the number of parts, dies and welding spots required by production can be reduced, the process complexity of the rear floor of the automobile body can be reduced, the overall weight and the production cost of the rear floor of the automobile body can be further reduced, and the production rate and the overall quality can be improved, so that the production cost of the automobile can be reduced, and the production speed and the market competitiveness of the automobile can be improved.

Description

Floor behind automobile body and have its vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a vehicle body rear floor and a vehicle with the same.

Background

The floor structure behind the automobile body mostly adopts many punching press parts to weld and assemble into a whole at present, and wherein, the floor structure behind the automobile body mainly is by longeron, rear floor crossbeam welding formation about the rear floor among the prior art, welds the floor assembly behind the formation with the rear floor body again, and this kind of connected mode structure is complicated, and part quantity is many, and then has caused welding quality check point too much, problem that production efficiency is low.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the rear floor of the automobile body, which can reduce the number of parts, dies and welding spots required by production, reduce the process complexity of the rear floor of the automobile body, further reduce the overall weight and production cost of the rear floor of the automobile body, improve the production rate, reduce the risk of stress cracking of the rear floor of the automobile body, and improve the overall quality of the rear floor of the automobile body, thereby reducing the production cost of the automobile and improving the production speed and market competitiveness of the automobile.

The invention further provides a vehicle with the vehicle body rear floor.

The vehicle body rear floor according to the first aspect of the invention includes: the two rear longitudinal beams extend back and forth and are arranged at intervals left and right; the rear floor cross beam extends leftwards and rightwards, and two ends of the rear floor cross beam are respectively connected with the two rear longitudinal beams; a rear floor connected between the two rear stringers and located at a front side of the rear floor cross member; and the spare tire pool is connected between the two rear longitudinal beams and positioned 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 rear floor of the vehicle body, the two rear longitudinal beams, the rear floor cross beam, the rear floor and the spare tire pool are integrally formed, so that the process complexity of the rear floor of the vehicle body can be reduced, and the production convenience of a vehicle body structure of the floor is improved; meanwhile, the number of parts, dies and welding spots required for producing the floor behind the automobile body can be reduced, so that the overall weight and production cost of the floor behind the automobile body can be reduced, the risk of stress cracking of the floor behind the automobile body is reduced, the overall quality of the floor behind the automobile body is improved, the production speed of the automobile can be improved, the production cost of the automobile is reduced, and the market competitiveness of the automobile is improved.

According to some embodiments of the invention, the two rear stringers, the rear floor cross member, the rear floor and the spare tire pool are integrally stamped.

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

According to some embodiments of the present invention, the rear side member includes an inner panel portion, an outer panel portion, and a bottom panel portion, the inner panel portion and the outer panel portion are vertically disposed and extend front and rear, the inner panel portion and the outer panel portion are arranged at a left-right interval, and the bottom panel portion is horizontally disposed and connected between a lower end of the inner panel portion and a lower end of the outer panel portion.

According to some embodiments of the invention, a distance between an upper surface of the bottom plate portion and an upper end edge of the inner side plate portion or an upper end edge of the outer side plate portion in an up-down direction is 150mm to 170mm.

According to some embodiments of the invention, the vehicle body rear floor further comprises: the reinforcing plates are fixedly connected with the rear longitudinal beams.

According to some embodiments of the invention, the plurality of reinforcement plates includes a first reinforcement plate provided at a rear end of the rear side member, the first reinforcement plate being provided at an upper side of the bottom plate portion and connected between the inner side plate portion and the outer side plate portion.

According to some embodiments of the invention, the plurality of reinforcement plates includes a second reinforcement plate connected to an upper side of the bottom plate portion and between the inner side plate portion and the outer side plate portion, the second reinforcement plate extending back and forth, a front end of the second reinforcement plate extending to a front end of the rear side member, and a rear end of the second reinforcement plate extending to a rear side of the rear floor cross member.

According to some embodiments of the invention, two ends of the rear floor cross member are respectively connected to the inner side plate parts of the two rear side members, the plurality of reinforcing plates include a third reinforcing plate, the third reinforcing plate is disposed on at least one side surface of the inner side plate part in the thickness direction, and the third reinforcing plate is right-left opposite to the end part of the rear floor cross member connected to the inner side plate part.

According to some embodiments of the invention, the vehicle body rear floor further comprises: the rear shock absorber support, the rear shock absorber support with the back longeron links to each other, the rear shock absorber support includes: the second support plate is horizontally arranged on the lower side of the bottom plate part and is fixed with the bottom plate part, a damping tower seat installation part is formed on the second support plate, the first support plate is connected with the second support plate and extends upwards, and the first support plate is positioned on the outer side of the outer side plate part and is fixedly connected with the outer side surface of the outer side plate part.

According to some embodiments of the invention, an end of the second support plate facing away from the first support plate extends to overlap the rear floor cross member.

A vehicle according to a second aspect of the invention includes the vehicle body rear floor according to the first aspect of the invention.

According to the vehicle of the present invention, by providing the vehicle body rear floor of the first aspect described above, the overall performance of the vehicle is improved.

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.

Drawings

FIG. 1 is a schematic view of a rear floor of a vehicle body according to an embodiment of the invention;

FIG. 2 is a schematic view of another angle of a rear floor of a vehicle body according to an embodiment of the invention;

FIG. 3 is a schematic view of yet another angle of a rear floor of a vehicle body according to an embodiment of the invention;

FIG. 4 is a partial schematic view of a rear floor of a vehicle body according to an embodiment of the invention;

FIG. 5 is a partial schematic view of another angle of a rear floor of a vehicle body according to an embodiment of the invention;

fig. 6 is a partial schematic view of still another angle of the vehicle body rear floor according to the embodiment of the invention.

Reference numerals:

100. a rear floor of the vehicle body;

10. a rear side member; 11. an inner side plate portion; 12. an outer plate portion; 13. a bottom plate portion;

20. a rear floor cross member;

30. a rear floor;

40. a spare tire pool;

50. a reinforcing plate; 51. a first reinforcing plate; 52. a second reinforcing plate; 53. a third reinforcing plate;

60. a rear shock-absorbing tower base bracket; 62. a second support plate; 61. a first support plate.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

A vehicle body rear floor 100 according to an embodiment of the first aspect of the invention is described below with reference to fig. 1 to 6.

As shown in fig. 1, a vehicle body rear floor 100 according to an embodiment of the first aspect of the invention includes: the two rear stringers 10, the rear floor cross member 20, the rear floor 30 and the spare tire pool 40 are arranged at intervals, wherein the two rear stringers 10 extend back and forth; the rear floor cross beam 20 extends left and right and two ends are respectively connected with the two rear longitudinal beams 10; the rear floor 30 is connected between the two rear stringers 10 and is located on the front side of the rear floor cross-member 20; the spare tire pool 40 is connected between the two rear side members 10 and located at the rear side of the rear floor cross member 20, wherein the two rear side members 10, the rear floor cross member 20, the rear floor 30 and the spare tire pool 40 are integrally formed.

In particular, the rear side rail 10 is an important component that can be used to support the trunk and rear mounting; the rear floor cross member 20 can be used for ensuring the torsional rigidity of the frame and bearing longitudinal load, and can also support main components on the automobile; the rear floor 30 is a rear and rearward floor portion of the passenger compartment that may be used to mount rear seats; the spare tire pool 40 is mainly used for placing spare tires.

Wherein, the two rear longitudinal beams 10, the rear floor cross beam 20, the rear floor 30 and the spare tire pool 40 are integrally formed, so that the connecting steps among the rear longitudinal beams 10, the rear floor cross beam 20, the rear floor 30 and the spare tire pool 40 can be reduced, the process complexity of the rear floor 100 of the automobile body can be further reduced, and the production convenience of the automobile body structure of the floor is improved; meanwhile, the number of the dies can be reduced, and the die opening cost and period are reduced; in addition, the number of parts and welding spots required by connection between the parts can be reduced, so that the overall weight and production cost of the floor 100 behind the automobile body can be reduced, the risk of stress cracking of the floor 100 behind the automobile body is reduced, the overall quality of the floor 100 behind the automobile body is improved, the production speed of the automobile can be improved, the production cost of the automobile is reduced, and the market competitiveness of the automobile is improved.

According to the vehicle body rear floor 100 of the embodiment of the invention, the two rear longitudinal beams 10, the rear floor cross beam 20, the rear floor 30 and the spare tire pool 40 are integrally formed, so that the process complexity of the vehicle body rear floor 100 can be reduced, and the production convenience of a floor vehicle body structure can be improved; meanwhile, the number of parts, dies and welding spots required for producing the floor 100 behind the automobile body can be reduced, so that the overall weight and production cost of the floor 100 behind the automobile body can be reduced, the risk of stress cracking of the floor 100 behind the automobile body is reduced, the overall quality of the floor 100 behind the automobile body is improved, the production speed of the automobile can be improved, the production cost of the automobile is reduced, and the market competitiveness of the automobile is improved.

According to some embodiments of the present invention, the two rear stringers 10, the rear floor cross-member 20, the rear floor 30, and the spare tire pool 40 are integrally stamped and formed. Wherein, the press forming refers to a processing forming method for obtaining a workpiece (stamping part) with a required shape and size by applying external force to plates, strips, pipes, sectional materials and the like by a press machine and a die to enable the plates, the strips, the pipes, the sectional materials and the like to generate plastic deformation or separation. The stamping forming process is simple, the manufacturing is convenient, the material consumption can be reduced, and the manufacturing cost of the rear floor 100 of the automobile body can be further reduced; meanwhile, the stamping part is light in weight and good in rigidity, the strength of the rear floor 100 of the vehicle body is guaranteed, the overall weight of the rear floor 100 of the vehicle body is reduced, and then the load of the vehicle can be reduced. Furthermore, the stamping part performs stamping according to the die, has higher dimensional accuracy and better interchangeability, and can meet the general assembly and use requirements without further mechanical processing; in addition, the stamping part has better surface quality and smooth and beautiful appearance because the surface of the material is not damaged in the stamping process, thereby providing convenient conditions for the processes of installation, welding and the like.

According to some embodiments of the invention, the thickness of the sheet material of the rear side rail 10 is 1mm-1.5mm. For example, the sheet thickness of the rear side member 10 may be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm. The rear longitudinal beam 10 is an important component for supporting the trunk and the rear mounting member, and needs higher strength, so that the thickness of the plate material of the rear longitudinal beam 10 is 1mm-1.5mm, the structural strength of the rear longitudinal beam 10 can be ensured, and the overall performance of the rear floor 100 of the vehicle body can be ensured. In addition, the thickness of the plate material of the rear side member 10 may be selected according to actual requirements.

According to some embodiments of the present invention, the sheet thickness of at least one of the rear floor 30, the rear floor cross member 20, and the spare tire pool 40 is 0.6mm to 1mm. Wherein, back floor 30, back floor crossbeam 20 and spare tyre pond 40 can select panel thickness according to its own performance demand, make its panel thickness when satisfying own performance demand, still can reduce overall cost and weight, and then can reduce the manufacturing cost and the load of vehicle to can improve the market competition of vehicle.

For example, the sheet thickness of at least one of the rear floor 30, the rear floor cross member 20, and the spare tire pool 40 may be 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm.

Further, the thicknesses of the plates of the rear longitudinal beam 10 and the rear floor 30, the rear floor cross beam 20 and the spare tire pool 40 are different, and the two rear longitudinal beams 10, the rear floor cross beam 20, the rear floor 30 and the spare tire pool 40 are integrally formed, so that the vehicle body rear floor 100 can be formed integrally by stamping by selecting variable-material-thickness metal plates based on performance requirements, the flexibility of the vehicle body rear floor 100 can be improved, the vehicle body rear floor 100 can meet various vehicle type frameworks, and the market competitiveness can be improved.

According to some embodiments of the present invention, as shown in fig. 4, the rear side member 10 includes an inner panel portion 11, an outer panel portion 12, and a bottom panel portion 13, the inner panel portion 11 and the outer panel portion 12 being vertically disposed and extending front and rear, the inner panel portion 11 and the outer panel portion 12 being arranged at a left-right interval, the bottom panel portion 13 being horizontally disposed and connected between a lower end of the inner panel portion 11 and a lower end of the outer panel portion 12. Specifically, the rear side member 10 extends back and forth, the rear side member 10 is formed as a groove with an opening at an upper side, and the cross section of the rear side member 10 is formed in a "U" shape, so that connection of the rear side member 10 with other components is facilitated, and at the same time, the cavity formed by the rear side member 10 can be used for transmitting and absorbing vibration energy, so that the NVH performance of the whole vehicle can be improved.

According to some embodiments of the present invention, a distance between the upper surface of the bottom plate portion 13 and the upper end edge of the inner side plate portion 11 or the upper end edge of the outer side plate portion 12 in the up-down direction is 150mm to 170mm. That is, the depth range of the inner groove of the rear side member 10 in the up-down direction is [150mm,170mm ], so that the possibility of occurrence of cracks in the side member molding can be reduced, and the production safety of the vehicle body rear floor 100 can be ensured.

For example, in the up-down direction, the interval between the upper surface of the bottom plate portion 13 and the upper end edge of the inner side plate portion 11 or the upper end edge of the outer side plate portion 12 may be 150mm, 160mm, or 170mm.

According to some embodiments of the present invention, as shown in fig. 1, the vehicle body rear floor 100 further includes: the plurality of reinforcing plates 50, the plurality of reinforcing plates 50 are fixedly coupled to the rear side member 10. For example, there may be two, three or more reinforcing plates 50, and a plurality of reinforcing plates 50 may be fixedly connected to the rear side member 10, so that the structural strength of the rear side member 10 may be increased, and thus the overall performance of the vehicle body rear floor 100 may be improved.

Alternatively, the reinforcing plate 50 may be connected to the rear floor 100 of the vehicle body in various manners, for example, welding, riveting, screwing, or the like may be used.

According to some embodiments of the present invention, as shown in fig. 1, the plurality of reinforcement plates 50 includes a first reinforcement plate 51, the first reinforcement plate 51 being provided at the rear end of the rear side member 10, the first reinforcement plate 51 being provided at the upper side of the bottom plate portion 13 and connected between the inner side plate portion 11 and the outer side plate portion 12. In this way, the first reinforcing plate 51 can increase the support strength of the rear side member 10 in the lateral direction, and can effectively reduce the problem of deformation instability of the rear side member 10 due to the external force.

For example, as shown in fig. 1 to 2, the first reinforcing plate 51 is provided in the groove of the rear side member 10, and the first reinforcing plate 51 is connected to the bottom plate portion 13, the inner plate portion 11 and the outer plate portion 12, respectively, so that the contact area between the first reinforcing plate 51 and the rear side member 10 can be increased, the supporting strength of the first reinforcing plate 51 to the rear side member 10 can be further increased, and the overall performance of the rear side member 10 can be further improved.

According to some embodiments of the present invention, as shown in fig. 1, the plurality of reinforcement plates 50 includes a second reinforcement plate 52, the second reinforcement plate 52 being connected to the upper side of the bottom plate portion 13 and between the inner side plate portion 11 and the outer side plate portion 12, the second reinforcement plate 52 extending back and forth, the front end of the second reinforcement plate 52 extending to the front end of the rear side member 10, and the rear end of the second reinforcement plate 52 extending to the rear side of the rear floor cross member 20. In this way, the supporting strength of the front part of the rear longitudinal beam 10 in the left-right direction can be increased, and the problem that the front part of the rear longitudinal beam 10 is deformed and unstably caused by the action of external force can be effectively reduced; meanwhile, the overall performance of the mounting points of the rear longitudinal beam 10 and the rear auxiliary frame can be increased, the local rigidity of the connecting position of the rear longitudinal beam 10 and the rear auxiliary frame is increased, and then the assembly stability between the rear auxiliary frame and the rear longitudinal beam 10 can be improved, so that the bearing strength and the structural stability of the rear longitudinal beam 10 can be improved.

Further, as shown in fig. 2, for example, the first reinforcing plate 51 and the second reinforcing plate 52 are arranged at intervals in the front-rear direction, and support the rear longitudinal beam 10 in sections, so that the structural strength of the rear floor 100 of the vehicle body is ensured, and meanwhile, the production difficulty of the rear floor 100 of the vehicle body can be reduced.

According to some embodiments of the present invention, as shown in fig. 1, both ends of the rear floor cross member 20 are respectively connected to the inner side plate portions 11 of the two rear side members 10, the plurality of reinforcing plates 50 includes a third reinforcing plate 53, the third reinforcing plate 53 is provided on at least one side surface of the inner side plate portion 11 in the thickness direction, and the third reinforcing plate 53 is right-left opposite to the end portions of the rear floor cross member 20 connected to the inner side plate portion 11. In this way, the continuity of the inner panel portion 11 can be increased, and further the force transmission effect and the supporting strength of the inner panel portion 11 can be increased, so that the superior overall performance of the rear side member 10 can be ensured.

According to some embodiments of the present invention, as shown in fig. 1 to 3, the vehicle body rear floor 100 further includes: rear shock absorber foot rest 60, rear shock absorber foot rest 60 links to each other with back longitudinal beam 10, and rear shock absorber foot rest 60 includes: the second support plate 62, the second support plate 62 is horizontally disposed under the bottom plate 13 and fixed with the bottom plate 13, and a shock absorbing tower mount mounting part is formed on the second support plate 62; the first support plate 61, the first support plate 61 is connected with the second support plate 62 and extends upwards, and the first support plate 61 is located on the outer side of the outer side plate 12 and fixedly connected with the outer side surface of the outer side plate 12.

Specifically, the rear shock-absorbing tower base support 60 is connected with the rear shock absorber, so that the impact of the road surface can be borne, the rear shock-absorbing tower base support 60 is connected with the rear longitudinal beam 10, and the force acted by the rear shock absorber can be transmitted to the rear longitudinal beam 10 through the rear shock-absorbing tower base support 60, so that the stress of the rear shock-absorbing tower base support 60 can be reduced, the dynamic stiffness of the rear shock-absorbing tower base support 60 is improved, and the stability and reliability of the installation of the shock absorber are improved.

Specifically, the second support plate 62 is connected with the first support plate 61 to form an L shape, and the second support plate 62 is connected with the first support plate 61 and the bottom plate portion 13 and the outer plate portion 12 of the rear side member 10 respectively, so that the contact area between the rear shock absorber tower base bracket 60 and the rear side member 10 can be increased, the force dispersibility can be further improved, the stress at the rear shock absorber tower base bracket 60 can be further reduced, the dynamic stiffness of the rear shock absorber tower base bracket 60 can be improved, and the stability and reliability of the installation of the shock absorber can be improved.

According to some embodiments of the present invention, as shown in fig. 3, an end of the second support plate 62 facing away from the first support plate 61 extends to overlap the rear floor cross member 20. Accordingly, the force transmitted to the rear shock mount bracket 60 can be continuously transmitted in two directions, one of which is: along the second leg 62 toward the rear floor cross member 20, another transfer path is: the first support plates 61 are transmitted to the rear longitudinal beam 10, so that stress can be dispersed to the whole rear floor 100 of the automobile body, the dynamic stiffness of the rear shock absorber support 60 is greatly improved, and the NVH performance of the whole automobile is improved.

A vehicle according to an embodiment of the second aspect of the invention includes the vehicle body rear floor 100 according to an embodiment of the first aspect of the invention.

According to the vehicle of the embodiment of the invention, by providing the vehicle body rear floor 100 of the embodiment of the first aspect described above, the overall performance of the vehicle is improved.

In the description of the present 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", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A vehicle body rear floor, characterized by comprising:

the two rear longitudinal beams extend back and forth and are arranged at intervals left and right;

the rear floor cross beam extends leftwards and rightwards, and two ends of the rear floor cross beam are respectively connected with the two rear longitudinal beams;

a rear floor connected between the two rear stringers and located at a front side of the rear floor cross member;

a spare tire pool connected between the two rear stringers and located at the rear side of the rear floor cross member,

the rear longitudinal beams, the rear floor cross beams, the rear floor and the spare tire pool are integrally formed.

2. The vehicle body rear floor according to claim 1, wherein the two rear side members, the rear floor cross member, the rear floor and the spare tire pool are integrally press-molded.

3. The vehicle body rear floor according to claim 1, wherein the plate thickness of the rear side member is 1mm to 1.5mm; the thickness of the plate of at least one of the rear floor, the rear floor cross beam and the spare tire pool is 0.6mm-1mm.

4. The vehicle body rear floor according to claim 1, wherein the rear side member includes an inner side plate portion, an outer side plate portion, and a bottom plate portion, the inner side plate portion and the outer side plate portion being vertically disposed and extending front and rear, the inner side plate portion and the outer side plate portion being arranged at a left-right interval, the bottom plate portion being horizontally disposed and connected between a lower end of the inner side plate portion and a lower end of the outer side plate portion.

5. The vehicle body rear floor according to claim 4, wherein a distance between an upper surface of the bottom plate portion and an upper end edge of the inner side plate portion or an upper end edge of the outer side plate portion in the up-down direction is 150mm to 170mm.

6. The vehicle body rear floor according to claim 4, characterized by further comprising: the reinforcing plates are fixedly connected with the rear longitudinal beams.

7. The vehicle body rear floor according to claim 6, wherein the plurality of reinforcement plates includes a first reinforcement plate provided at a rear end of the rear side member, the first reinforcement plate being provided on an upper side of the bottom plate portion and connected between the inner side plate portion and the outer side plate portion.

8. The vehicle body rear floor according to claim 6, wherein the plurality of reinforcement plates includes a second reinforcement plate that is connected to an upper side of the bottom plate portion and between the inner side plate portion and the outer side plate portion, the second reinforcement plate extending back and forth, a front end of the second reinforcement plate extending to a front end of the rear side member, and a rear end of the second reinforcement plate extending to a rear side of the rear floor cross member.

9. The vehicle body rear floor according to claim 6, wherein both ends of the rear floor cross member are respectively connected to the inner panel portions of the two rear side members,

the plurality of reinforcing plates comprise a third reinforcing plate, the third reinforcing plate is arranged on at least one side surface of the inner side plate part in the thickness direction, and the third reinforcing plate is right-left opposite to the end part of the rear floor cross beam connected with the inner side plate part.

10. The vehicle body rear floor according to claim 4, characterized by further comprising: the rear shock absorber support, the rear shock absorber support with the back longeron links to each other, the rear shock absorber support includes:

a second support plate horizontally arranged at the lower side of the bottom plate part and fixed with the bottom plate part, a damping tower seat mounting part is formed on the second support plate,

the first support plate is connected with the second support plate and extends upwards, and the first support plate is positioned on the outer side of the outer side plate part and fixedly connected with the outer side surface of the outer side plate part.

11. The vehicle body rear floor of claim 10, wherein an end of said second leg facing away from said first leg extends into overlapping connection with said rear floor cross member.

12. A vehicle characterized by comprising the vehicle body rear floor according to any one of claims 1 to 11.