CN218505994U

CN218505994U - Floor structure and vehicle behind automobile body

Info

Publication number: CN218505994U
Application number: CN202223058483.XU
Authority: CN
Inventors: 于殿轮
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-02-21
Anticipated expiration: 2032-11-17

Abstract

The utility model provides a floor structure and vehicle behind automobile body belongs to vehicle technical field, including back floor body, battery package installation skeleton and back floor enhancement skeleton, back floor body has the installation region who places the battery package. The battery pack mounting framework is fixedly arranged above the rear floor body and is provided with a battery pack fixing point. The rear floor reinforcing framework is fixedly arranged below the rear floor body, and the front end and the rear end of the rear floor middle longitudinal beam, the rear floor left longitudinal beam and the rear floor right longitudinal beam are respectively connected with the rear floor front cross beam and the rear cross beam reinforcing beam to form two closed annular structures. The battery pack mounting framework improves the rigidity of the rear floor body on one hand, and serves as a fixing point of the battery pack on the other hand, so that reliable support is provided for the battery pack. The two closed annular structures form a reinforcing framework, the rigidity of the battery pack mounting area is improved below the battery pack mounting area, safety accidents such as combustion and explosion caused by extrusion of the battery pack are avoided, and safety of a vehicle and passengers is protected.

Description

Floor structure and vehicle behind automobile body

Technical Field

The utility model belongs to the technical field of the vehicle, concretely relates to floor structure and vehicle behind automobile body.

Background

The new energy vehicle type, especially the Plug-in electric vehicle (PHEV) Plug-in hybrid vehicle type, is different from the common hybrid vehicle, the Plug-in hybrid vehicle has relatively large battery weight and volume, can be externally charged, can be driven in a pure electric mode, and can be driven in a hybrid power mode (mainly using an internal combustion engine) after the battery power is exhausted, and the battery is timely charged. The battery capacity of the common hybrid vehicle is small, energy is supplied/recovered only in starting/stopping, acceleration/deceleration, external charging cannot be achieved, and the vehicle cannot run for a long distance in a pure electric mode.

The battery pack is arranged on the floor, and for a plug-in hybrid electric vehicle type using a large battery pack, if the structural strength and rigidity of the floor supporting the battery pack are poor, safety accidents such as combustion and explosion of the battery pack can be caused when the vehicle collides, and therefore the plug-in hybrid electric vehicle puts higher requirements on the installation structure of the large battery pack.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a floor structure and vehicle behind automobile body aims at solving the potential safety hazard that the poor result in of floor structural strength of installation battery package.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a vehicle body rear floor structure including:

a rear floor body having an installation area in which a battery pack is placed;

the battery pack mounting framework is fixedly arranged above the rear floor body and comprises a rear row seat reinforcing crossbeam, a rear floor upper crossbeam, a battery pack left support and a battery pack right support which are sequentially arranged around the mounting area, and battery pack fixing points are respectively arranged on the rear row seat reinforcing crossbeam, the rear floor upper crossbeam, the battery pack left support and the battery pack right support; and

the rear floor reinforcing framework is fixedly arranged below the rear floor body, comprises a rear floor front cross beam, a rear cross beam reinforcing beam, a rear floor left longitudinal beam and a rear floor right longitudinal beam which are sequentially arranged around the front part, the rear part, the left part and the right part of the installation area, and also comprises a rear floor middle longitudinal beam arranged in the middle of the installation area; the front end and the rear end of the rear floor middle longitudinal beam, the rear floor left longitudinal beam and the rear floor right longitudinal beam are respectively connected with the rear floor front cross beam and the rear cross beam reinforcing beam to form two closed annular structures.

With reference to the first aspect, in a possible implementation manner, the rear floor reinforcing framework further includes a rear floor cross beam, the rear floor cross beam is located behind the rear floor front cross beam, and left and right ends of the rear floor cross beam are respectively connected to the rear floor left longitudinal beam and the rear floor right longitudinal beam to form a closed annular structure; the front end of the middle longitudinal beam of the rear floor is connected to the cross beam of the rear floor.

With reference to the first aspect, in one possible implementation manner, the rear-row seat reinforcing cross beam and the rear floor cross beam are overlapped in an up-down direction; the rear-row seat reinforcing beam is of an upward convex structure, the rear floor beam is of a downward concave structure, and the connecting part of the rear-row seat reinforcing beam, the rear floor body and the rear floor beam is in a shape like a Chinese character 'ri' along the contour of the vertical section in the front-back direction.

With reference to the first aspect, in a possible implementation manner, the rear floor upper cross beam is fixed to a rear floor rear cross beam at the rear end of the rear floor body, the rear cross beam reinforcement beam is fixed below the rear floor rear cross beam, and a vertical cross-sectional profile shape along the front-rear direction is in a square shape at a connection position of the rear floor upper cross beam, the rear cross beam reinforcement beam and the rear floor rear cross beam.

With reference to the first aspect, in a possible implementation manner, the rear floor left longitudinal beam and the battery pack left bracket are arranged in a staggered manner in the left-right direction, and the rear floor left longitudinal beam is located on the inner side of the battery pack left bracket; the rear floor right longitudinal beam and the battery pack right support are arranged in a staggered mode in the left-right direction, and the rear floor right longitudinal beam is located on the inner side of the battery pack right support.

With reference to the first aspect, in a possible implementation manner, the rear floor left longitudinal beam is of a concave structure, the battery pack left bracket is of an upward convex structure, and the battery pack left bracket and the rear floor left longitudinal beam form a continuous bending structure which is convex and concave; the battery pack right support is of an upward convex structure, the rear floor right longitudinal beam is of a downward concave structure, and the battery pack right support and the rear floor right longitudinal beam form an upward convex downward concave continuous bending structure.

With reference to the first aspect, in one possible implementation manner, the left and right ends of the rear seat reinforcing beam are respectively provided with an upper left reinforcing bracket and an upper right reinforcing bracket.

With reference to the first aspect, in a possible implementation manner, a left lower reinforcing bracket is further arranged in an outside corner area where the rear floor front cross beam is connected with the rear floor left longitudinal beam; and a right lower reinforcing bracket is also arranged in an outer corner area where the front cross beam of the rear floor is connected with the right longitudinal beam of the rear floor.

With reference to the first aspect, in a possible implementation manner, a connecting plate is further disposed between the middle longitudinal beam of the rear floor and the rear cross beam reinforcing beam.

The utility model provides a floor structure behind automobile body, compared with the prior art, beneficial effect lies in: the battery pack mounting framework above the rear floor body comprises rear row seat reinforcing cross beams, a rear floor upper cross beam, a battery pack left support and a battery pack right support which are sequentially arranged around a mounting area, a quadrilateral frame structure is formed, the rigidity of the rear floor structure is improved, the battery pack mounting is protected, when a vehicle is laterally collided, collision stress can be transmitted along the quadrilateral frame, the mounting area of the battery pack is avoided, and the extrusion force of the battery pack can be weakened; the below of back floor body has adopted two closed loop configuration, strengthens the installation region structural strength of battery package, and simultaneously, when the vehicle took place the side impact, the collision atress can be followed closed loop configuration transmission, avoids the installation region of battery package, further weakens the extrusion force that the battery package received, avoids the battery package to receive the extrusion incident such as burning explosion to appear, promotes the security performance that the battery package used.

In a second aspect, the embodiment of the present invention further provides a vehicle, including the vehicle body rear floor structure.

The embodiment of the utility model provides a vehicle, through the back floor reinforcing skeleton of battery package installation skeleton on the back floor body and below, make the collision atress avoid the battery package along frame and loop configuration dispersion transmission, avoided the battery package to receive the extrusion incident such as combustion and explosion appear, promoted the security performance that the battery package used to the security performance of mixing the vehicle has been promoted.

Drawings

Fig. 1 is a schematic top view of a rear floor structure of a vehicle body provided in an embodiment of the present invention;

FIG. 2 is a bottom structural schematic view of the rear floor structure of the vehicle body provided in FIG. 1;

fig. 3 is a schematic perspective view of a rear floor structure of a vehicle body according to an embodiment of the present invention;

FIG. 4 is a bottom view of the rear floor structure of the vehicle body shown in FIG. 3;

fig. 5 is a schematic top view of a positional relationship between a battery pack mounting frame and a rear floor reinforcing frame according to an embodiment of the present invention;

fig. 6 is a schematic bottom view of the battery pack mounting frame and the rear floor reinforcing frame shown in fig. 5;

fig. 7 is a schematic perspective view illustrating a positional relationship between the battery pack mounting frame and the rear floor reinforcing frame provided in fig. 5;

fig. 8 is a schematic bottom view of the positional relationship between the battery pack mounting frame and the rear floor reinforcing frame according to the embodiment of the present invention;

FIG. 9 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 1;

description of reference numerals:

1. a rear floor body; 2. an upper right reinforcing bracket; 3. a battery pack right bracket; 4. a rear right reinforcing plate; 5. a rear floor upper beam; 6. a rear floor rear cross beam; 7. sinking a groove; 8. a rear left stiffener; 9. a battery pack left bracket; 10. an upper left reinforcing bracket; 11. a front left reinforcing stringer; 12. a rear row seat reinforcing beam; 13. a front right reinforcing stringer; 14. a rear floor front cross member; 15. a rear floor beam; 16. a lower right reinforcing brace; 17. a rear floor right stringer; 18. a rear cross member right reinforcing plate; 19. a rear cross member stiffening beam; 20. a connecting plate; 21. a rear floor center stringer; 22. a rear cross member left gusset; 23. a rear floor left stringer; 24. a left lower reinforcing brace.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "front", "back", "left", "right", "up", "down", etc. appear, they are based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 8 together, a rear floor structure of a vehicle body according to the present invention will now be described. The rear floor structure of the vehicle body comprises a rear floor body 1, a battery pack mounting framework and a rear floor reinforcing framework, wherein the rear floor body 1 is provided with a mounting area for placing a battery pack.

As shown in fig. 1 and 3, and fig. 5 to 8, the battery pack mounting framework is fixedly arranged above the rear floor body 1, and includes a rear row seat reinforcing beam 12, a rear floor upper beam 5, a battery pack left support 9 and a battery pack right support 3 which are sequentially arranged around the mounting area, and battery pack fixing points are respectively arranged on the rear row seat reinforcing beam 12, the rear floor upper beam 5, the battery pack left support 9 and the battery pack right support 3. The battery pack mounting framework improves the rigidity of the rear floor body 1, and serves as a fixing point of the battery pack to provide reliable support for the battery pack.

As shown in fig. 2 and fig. 4 to fig. 8, the rear floor reinforcing framework is fixedly arranged below the rear floor body 1, and comprises a rear floor front cross beam 14, a rear cross beam reinforcing beam 19, a rear floor left longitudinal beam 23 and a rear floor right longitudinal beam 17 which are sequentially arranged around the front, rear, left and right of the installation area, and a rear floor middle longitudinal beam 21 arranged in the middle of the installation area; the front and rear ends of the rear floor middle longitudinal beam 21, the rear floor left longitudinal beam 23 and the rear floor right longitudinal beam 17 are respectively connected with the rear floor front cross beam 14 and the rear cross beam reinforcing beam 19 to form two closed annular structures (shown as D and E in figure 6). Two closed loop configuration forms strengthens the skeleton, in the below of battery package installation region, promotes the rigidity of battery package installation region to the safety accident problem that the protection battery package can not receive serious deformation to lead to protects vehicle and passenger's safety.

The utility model provides a floor structure behind automobile body, the battery package installation skeleton of the top of back floor body 1, including enclosing back row seat reinforcing crossbeam 12, back floor entablature 5, battery package left socle 9 and battery package right branch frame 3 who locates the installation region all around in proper order, constitute quadrilateral frame structure (as shown in C in figure 5), promote the rigidity of back floor structure, play the effect of protection to the installation of battery package, when the vehicle takes place the side impact, the collision atress can be transmitted along quadrilateral frame, avoids the installation region of battery package, can weaken the extrusion force that the battery package received; the below of back floor body 1 has adopted two closed loop configuration, strengthens the installation region structural strength of battery package, and simultaneously, when the vehicle took place the side impact, the collision atress can be followed closed loop configuration transmission, avoids the installation region of battery package, further weakens the extrusion force that the battery package received, avoids the battery package to receive the extrusion incident such as burning explosion to appear, promotes the security performance that the battery package used.

This embodiment has not only set up the skeleton around the battery package installation zone, longeron 21 in the inside back floor that still is equipped with of battery package installation zone, the skeleton for installing the battery package is quadrilateral frame shape structure, the bottom of battery package installation zone is two closed loop configuration, the torsion of back floor and automobile body assembly has not only effectively been promoted, bending rigidity and structural strength, and when the vehicle received back bump or side impact, the impact can be followed the skeleton transmission, avoid directly transmitting to the battery package, can effectively protect the battery package can not receive the incident problem that serious deformation leads to, the safety of protection vehicle and passenger.

In some embodiments, as shown in fig. 2, 4 to 8, the rear floor reinforcing framework further includes a rear floor cross member 15, the rear floor cross member 15 is located behind the rear floor front cross member 14, and the left and right ends of the rear floor cross member are respectively connected with the rear floor left longitudinal member 23 and the rear floor right longitudinal member 17 to form a closed annular structure; the front end of the rear floor center longitudinal member 21 is connected to the rear floor cross member 15.

A closed loop configuration is rebuild at battery package installation region through back floor crossbeam 15, consequently, forms three closed loop configuration under battery package installation region, not only forms the enhancement skeleton of arranging with great ease around installation region, inside installation region, has also arranged the skeleton that distributes with great ease to promote battery package installation region's anti deformability, effectively protect the battery package not receive serious deformation.

In some embodiments, as shown in fig. 5 to 9, the rear seat reinforcing cross member 12 overlaps the rear floor cross member 15 in the up-down direction; the rear seat reinforcing beam 12 is of an upward convex structure, the rear floor beam 15 is of a downward concave structure, and the vertical section profile shape along the front-rear direction at the joint of the rear seat reinforcing beam 12, the rear floor body 1 and the rear floor beam 15 is of a herringbone shape (as shown in M in fig. 9). Because the rear seat reinforcing beam 12 also has the front mounting fixed point of the battery pack, the mounting rigidity of the front end of the battery pack can be improved and the deformation performance of the frame can be improved by arranging the rear floor beam 15 below the rear seat reinforcing beam. And the concave-convex modeling matched structure of the rear row seat reinforcing beam 12 and the rear floor beam 15 not only can improve the rigidity of the rear row seat reinforcing beam, but also can form a cavity capable of absorbing energy, has the effects of vibration reduction and energy absorption, and improves the deformation resistance during collision.

As shown in fig. 9, in some embodiments, the rear floor upper cross member 5 is fixed to the rear floor rear cross member 6 at the rear end of the rear floor body 1, the rear cross member reinforcement beam 19 is fixed below the rear floor rear cross member 6, and the vertical cross-sectional profile shape in the front-rear direction at the connection of the rear floor upper cross member 5, the rear cross member reinforcement beam 19 and the rear floor rear cross member 6 is square-shaped (as shown at N in fig. 9). That is, at the rear end fixed point of battery package, formed the additional strengthening of mouth font, same reason not only can promote the rigidity of each part self, forms the cavity that can absorb the energy moreover, has the effect that the damping was inhaled the energy, anti deformability when promoting the collision.

In some embodiments, as shown in fig. 5 to 8, the rear floor left longitudinal beam 23 and the battery pack left bracket 9 are arranged in a left-right direction, and the rear floor left longitudinal beam 23 is located inside the battery pack left bracket 9; the rear floor right longitudinal beam 17 and the battery pack right bracket 3 are arranged in a staggered mode in the left-right direction, and the rear floor right longitudinal beam 17 is located on the inner side of the battery pack right bracket 3. Through the staggered arrangement of the rear floor left longitudinal beam 23 and the battery pack left bracket 9, a layered supporting and reinforcing effect is formed on the installation area of the battery pack.

The battery pack mounting area on the rear floor body 1 is provided with a sunken groove 7 for positioning the battery pack, the rear floor left longitudinal beam 23 and the rear floor right longitudinal beam 17 are close to the left side and the right side of the sunken groove 7, and the rear floor middle longitudinal beam 21 is arranged in the middle of the bottom of the sunken groove 7 to improve the structural rigidity around the sunken groove 7.

In some embodiments, as shown in fig. 5 to 8 and 10, the rear floor left longitudinal beam 23 is of a concave structure, the battery pack left bracket 9 is of an convex structure, and the battery pack left bracket 9 and the rear floor left longitudinal beam 23 form a continuous bending structure which is convex and concave. Similarly, the battery pack right support 3 is of an upward convex structure, the rear floor right longitudinal beam 17 is of a downward concave structure, and the battery pack right support 3 and the rear floor right longitudinal beam 17 form a continuous bending structure which is upward convex and downward concave. The part of this kind of concave-convex structure not only can promote the rigidity of self, and the successive bending structure of unevenness that forms can promote the antitorque nature of back floor body 1 to avoid the battery package to receive serious deformation.

In the embodiment shown in fig. 1, 3, 5 and 7, the left and right ends of the rear seat reinforcing beam 12 are respectively provided with the left upper reinforcing bracket 10 and the right upper reinforcing bracket 2, so as to improve the strength of the rear floor body 1.

In some embodiments, as shown in fig. 2, 4, 6 and 8, a left lower reinforcing bracket 24 is further provided at the outer corner region where the rear floor front cross member 14 is connected with the rear floor left longitudinal member 23; the outer corner region where the rear floor front cross beam 14 is connected with the rear floor right longitudinal beam 17 is also provided with a right lower reinforcing bracket 16. The outer side corner region of the rear floor front cross beam 14 connected with the rear floor left longitudinal beam 23 is just in the corner of the battery pack, the rear floor body 1 is weak in structure at the position, and the left lower reinforcing bracket 24 and the right lower reinforcing bracket 16 are adopted, so that the structural strength of the position can be improved, and the battery pack is protected.

In some embodiments as shown in fig. 2, 4, 6 and 8, a connecting plate 20 is further disposed between the rear floor center longitudinal beam 21 and the rear cross beam reinforcing beam 19, so as to improve the structural strength of the connecting portion between the two.

Wherein, the left and right ends of the rear floor rear cross beam 6 are respectively provided with a rear cross beam left reinforcing plate 22 and a rear cross beam right reinforcing plate 18; a rear left reinforcing plate 8 is further arranged at a corner formed by the rear cross beam left reinforcing plate 22 and the rear floor body 1, and a rear right reinforcing plate 4 is further arranged at a corner formed by the rear cross beam right reinforcing plate 18 and the rear floor body 1, so that the rigidity of the whole rear floor structure is improved, as shown in fig. 2, 4, 6 and 8.

As shown in fig. 1, 3, 5 to 8, a front left reinforcing longitudinal beam 11 and a front right reinforcing longitudinal beam 13 are further provided at an upper portion of the rear floor body 1, and the front left reinforcing longitudinal beam 11 and the front right reinforcing longitudinal beam 13 are located in front of the rear floor front cross beam 14 and are in a stacked relationship with the rear floor front cross beam 14 in the vertical direction, thereby further improving the deformation resistance of the rear floor structure.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Based on the same inventive concept, the embodiment of the application also provides a vehicle, which comprises the vehicle body rear floor structure.

The embodiment of the utility model provides a vehicle, through the back floor reinforcing skeleton of battery package installation skeleton on the back floor body 1 and below, make the collision atress avoid the battery package along frame and the transmission of loop configuration dispersion, avoided the battery package to receive the extrusion incident such as burning explosion appear, promoted the security performance that the battery package used to the security performance of mixing the vehicle has been promoted.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A vehicle body rear floor structure, comprising:

a rear floor body (1) having an installation area for placing a battery pack;

the battery pack mounting framework is fixedly arranged above the rear floor body (1) and comprises a rear row seat reinforcing crossbeam (12), a rear floor upper crossbeam (5), a battery pack left support (9) and a battery pack right support (3) which are sequentially arranged around the mounting area, wherein battery pack fixing points are respectively arranged on the rear row seat reinforcing crossbeam (12), the rear floor upper crossbeam (5), the battery pack left support (9) and the battery pack right support (3); and

the rear floor reinforcing framework is fixedly arranged below the rear floor body (1), comprises a rear floor front cross beam (14), a rear cross beam reinforcing beam (19), a rear floor left longitudinal beam (23) and a rear floor right longitudinal beam (17) which are sequentially arranged around the front, the rear, the left and the right of the mounting area, and further comprises a rear floor middle longitudinal beam (21) arranged in the middle of the mounting area; the front end and the rear end of the rear floor middle longitudinal beam (21), the rear floor left longitudinal beam (23) and the rear floor right longitudinal beam (17) are respectively connected with the rear floor front cross beam (14) and the rear cross beam reinforcing beam (19) to form two closed annular structures.

2. The vehicle body rear floor structure according to claim 1, wherein said rear floor reinforcement frame further comprises a rear floor cross member (15), said rear floor cross member (15) is located behind said rear floor front cross member (14), and left and right ends thereof are respectively connected to said rear floor left longitudinal member (23) and said rear floor right longitudinal member (17) to form a closed ring structure; the front end of the rear floor middle longitudinal beam (21) is connected to the rear floor cross beam (15).

3. The vehicle body rear floor structure according to claim 2, wherein said rear row seat reinforcing cross member (12) is overlapped with said rear floor cross member (15) in the up-down direction; wherein, back row seat reinforcing beam (12) are protruding formula structure, back floor crossbeam (15) are recessed formula structure back row seat reinforcing beam (12) back floor body (1) with the junction of back floor crossbeam (15) is the day font along the vertical section profile shape of fore-and-aft direction.

4. The vehicle body rear floor structure according to claim 3, wherein the rear floor upper cross member (5) is fixed to a rear floor rear cross member (6) at a rear end of the rear floor body (1), the rear cross member reinforcement beam (19) is fixed below the rear floor rear cross member (6), and a vertical cross-sectional profile shape in a front-rear direction at a joint of the rear floor upper cross member (5), the rear cross member reinforcement beam (19), and the rear floor rear cross member (6) is square-shaped.

5. The vehicle body rear floor structure according to claim 1, characterized in that the rear floor left side member (23) is arranged offset from the battery pack left bracket (9) in the left-right direction, and the rear floor left side member (23) is located inside the battery pack left bracket (9); the rear floor right longitudinal beam (17) and the battery pack right support (3) are arranged in a staggered mode in the left-right direction, and the rear floor right longitudinal beam (17) is located on the inner side of the battery pack right support (3).

6. The vehicle body rear floor structure according to claim 5, characterized in that the rear floor left side member (23) is of a concave structure, the battery pack left bracket (9) is of an upward convex structure, and the battery pack left bracket (9) and the rear floor left side member (23) form a continuous bending structure which is upward convex and downward concave; the battery pack right support (3) is of an upward convex structure, the rear floor right longitudinal beam (17) is of a downward concave structure, and the battery pack right support (3) and the rear floor right longitudinal beam (17) form an upward convex downward concave continuous bending structure.

7. The vehicle body rear floor structure according to claim 1, wherein the left and right ends of the rear seat reinforcing cross member (12) are provided with a left upper reinforcing bracket (10) and a right upper reinforcing bracket (2), respectively.

8. The vehicle body rear floor structure according to claim 1, wherein an outer side corner region where said rear floor front cross member (14) is connected to said rear floor left side member (23) is further provided with a left lower reinforcing bracket (24); and a right lower reinforcing bracket (16) is further arranged in the outer corner area where the rear floor front cross beam (14) is connected with the rear floor right longitudinal beam (17).

9. The vehicle body rear floor structure according to claim 1, characterized in that a web (20) is further provided between the rear floor center sill (21) and the rear cross member reinforcement beam (19).

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