CN219325866U

CN219325866U - Vehicle body structure and vehicle

Info

Publication number: CN219325866U
Application number: CN202222905787.9U
Authority: CN
Inventors: 谢长春; 刘腾涌; 邵唤梅; 闫军飞; 杜兆钧
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-07-11
Anticipated expiration: 2032-11-01

Abstract

The embodiment of the application discloses a vehicle body structure, it includes: a C column and a D column; one end of the sliding door guide rail beam is connected with the C column, and the other end of the sliding door guide rail beam is connected with the D column; the wheel cover, the sliding door guide rail crossbeam is connected with the wheel cover through first connecting plate and second connecting plate respectively, wherein, first connecting plate and second connecting plate set up at the length direction of vehicle interval. The embodiment also discloses a vehicle, which adopts the vehicle body structure. One technical effect of the embodiment of the application is that: the sliding door guide rail beam is connected with the C column and the D column respectively, and is fixedly connected with the wheel cover through the first connecting plate and the second connecting plate which are arranged at intervals along the length direction of the vehicle, so that the stability and the structural strength of the sliding door guide rail structure are remarkably improved, and meanwhile, the sliding door guide rail beam is connected with the C column and the D column respectively, and the stability, the strength and the deformation torsion resistance of the vehicle body structure can be improved.

Description

Vehicle body structure and vehicle

Technical Field

The application belongs to the technical field of vehicles, and particularly relates to a vehicle body structure and a vehicle using the same.

Background

The sliding door is usually arranged in a large-sized vehicle such as MPV, SUV and the like, is different from the traditional fan-shaped opening and closing form of the vehicle door, and can be opened and closed along the length direction of the vehicle by generating relative sliding between a pulley on the inner side of the sliding door and a guide rail fixedly arranged on the vehicle body.

The sliding door generally needs larger opening and closing range and lighter and flexible mobility, so that the sliding door is generally only in sliding connection with the guide rail on the vehicle body mainly by virtue of the pulley, and the sliding door with larger weight can apply larger acting force to the guide rail, so that in the vehicle production process, how to ensure the strength and stability of the vehicle body structure, particularly the vehicle body structure at the guide rail, is one of the problems needing to be focused.

The existing sliding door guide rail structure is not high enough in beam strength of the sliding door guide rail, and is poor in rigidity and stability.

Disclosure of Invention

An object of the embodiment of the application is to provide a new technical scheme of a vehicle body structure, which can solve the problems of poor structural stability and low strength of the vehicle body structure, particularly a guide rail mounting position.

According to a first aspect of an embodiment of the present application, there is provided a vehicle body structure including:

a C column and a D column;

one end of the sliding door guide rail beam is connected with the C column, and the other end of the sliding door guide rail beam is connected with the D column;

the wheel cover, the sliding door guide rail crossbeam is connected with the wheel cover through first connecting plate and second connecting plate respectively, wherein, first connecting plate and second connecting plate interval set up.

Optionally, the first connecting plate includes a first end connected with the sliding door rail beam, a second end connected with the wheel cover, and an intermediate section disposed between the first end and the second end, wherein the intermediate section protrudes in a vehicle width direction to a side away from the passenger compartment.

Optionally, a charging port or a fuel filler is provided on the wheel cover, and the first connecting plate and the second connecting plate are respectively provided on both sides of the charging port or the fuel filler in the vehicle length direction.

Optionally, the sliding door rail beam includes a beam plate and a reinforcing plate that are sequentially disposed in the vehicle width direction, and the beam plate is fixedly connected with the reinforcing plate.

Further alternatively, the first end of the first connecting plate is disposed between the cross beam plate and the reinforcing plate, and is fixedly connected with the cross beam plate and the reinforcing plate, respectively.

Further alternatively, the second connecting plate comprises a third end connected with the sliding door guide rail beam and a fourth end connected with the wheel cover, wherein the third end is arranged between the beam plate and the reinforcing plate, is arranged in a cavity between the beam plate and the reinforcing plate and is fixedly connected with the beam plate and the reinforcing plate respectively.

Further alternatively, the cross beam plate has a mounting portion thereon configured to fix the sliding door rail, and a face of the mounting portion adjacent to the passenger compartment is fixedly connected with the reinforcement plate along a width direction of the vehicle.

Further optionally, the reinforcing plate includes a connection portion fixedly connected with the mounting portion.

Further alternatively, the cross section of the cross beam plate is in a shape like a Chinese character 'ji', and the cross section of the reinforcing plate is in a shape like a Chinese character 'W' or a plurality of Chinese character 'ji' which are connected in sequence.

Further alternatively, the middle protruding portion of the "W" shaped structure is formed as a connecting portion; or the connection part of two adjacent Chinese character 'ji' -shaped structures is formed into a connection part.

Optionally, the vehicle further comprises a guide rail front mounting plate, wherein the guide rail front mounting plate is connected to the end part of the sliding door guide rail cross beam and is fixedly connected with the C column, and at least part of the guide rail front mounting plate is bent towards the passenger cabin direction in the vehicle width direction so as to form an avoidance concave part;

the C column comprises a C column reinforcing plate and a C column inner plate which are sequentially arranged in the width direction of the vehicle, a first cavity is formed between the avoidance concave part and a part of the structure of the C column reinforcing plate, and a second cavity is formed between a part of the structure of the C column reinforcing plate and a part of the structure of the C column inner plate.

Further alternatively, the first cavity is provided on a side of the second cavity away from the D-pillar in the vehicle length direction.

According to a second aspect of embodiments of the present application, there is provided a vehicle comprising:

the vehicle body structure of the first aspect of the embodiment of the present application;

the guide rail is fixedly arranged on the sliding door guide rail beam and extends along the length direction of the vehicle;

the sliding door is provided with a pulley assembly, and the sliding door and the guide rail form a relative sliding fit relation through the pulley assembly.

One technical effect of the present application is:

the sliding door guide rail beam is fixedly connected with the wheel cover through the first connecting plates and the second connecting plates which are arranged at intervals, so that the stability and the structural strength of the sliding door guide rail structure are remarkably improved, meanwhile, the sliding door guide rail beam is respectively connected with the C column and the D column, and the stability, the strength and the deformation torsion resistance of the vehicle body structure can be improved.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic view of an inside structure of a vehicle body structure provided in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of B1-B1 of FIG. 1;

FIG. 3 is a schematic enlarged view of section B2-B2 of FIG. 1;

FIG. 4 is a schematic view of section C-C of FIG. 1;

FIG. 5 is yet another schematic illustration of a vehicle body structure provided in an embodiment of the present application;

FIG. 6 is a schematic view of section D-D of FIG. 5;

FIG. 7 is a schematic view of a vehicle body structure provided in an embodiment of the present application;

FIG. 8 is yet another schematic illustration of a vehicle body structure provided in an embodiment of the present application;

fig. 9 is a schematic cross-sectional view of B2-B2 of fig. 1.

Wherein: 1. a sliding door rail beam; 2. a first connection plate; 3. a second connecting plate; 4. a C column; 5. a D column; 6. a rear wheel cover outer plate; 7. a rear wheel cover inner plate; 8. a reinforcing plate; 11. a guide rail front mounting plate; 12. a C column reinforcing plate; 13. a cross beam plate; 14. a C column inner plate; 15. a charging port reinforcing plate; 16. a rear side member; 17. a rear rail cover plate; 18. c column ring; 19. d column ring; 20. a rear triangular window ring; 21. a rear wheel cover ring; 22. a charging port or a fuel filler port.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 to 9, which are schematic views of an inside structure of a vehicle body structure provided in the present embodiment, specifically, the vehicle body structure is inside on a side closer to a passenger compartment in a vehicle width direction, and is outside on a side farther from the passenger compartment; the vehicle body structure provided in this embodiment includes:

a C column 4 and a D column 5;

one end of the sliding door guide rail beam 1 is connected with the C column 4, and the other end is connected with the D column 5;

the wheel cover, the sliding door guide rail beam 1 is connected with the wheel cover through a first connecting plate 2 and a second connecting plate 3 respectively, wherein the first connecting plate 2 and the second connecting plate 3 are arranged at intervals; specifically, the wheel house described herein is generally a rear wheel house including a rear wheel house outer plate 6 and a rear wheel house inner plate 7, the rear wheel house outer plate 6 being disposed away from the passenger compartment in the vehicle width direction, the rear wheel house inner plate 7 being disposed close to the passenger compartment in the vehicle width direction, one side of the rear wheel house outer plate 6 opposite to the rear wheel house inner plate 7 being fixedly connected to each other, the first connecting plate 2 and the second connecting plate 3 being fixedly connected to the rear wheel house outer plate 6, of course, in actual use, being also connectable to the rear wheel house inner plate according to actual demands.

In the embodiment, the installation position of the sliding door guide rail beam 1 can be flexibly determined according to actual requirements, and is installed at the upper middle positions of the C column 4 and the D column 5 in most cases; in the embodiment, the sliding door guide rail beam 1 for installing the sliding door guide rail and connecting with the sliding door in the later stage is arranged between the C column 4 and the D column 5, and the two ends of the sliding door guide rail beam are fixedly connected with the C column 4 and the D column 5 respectively, so that the sliding door guide rail beam, the C column 4 and the D column 5 are formed into a whole, and the structural stability and the strength of the whole body structure of the vehicle body are improved; on the basis, the first connecting plate 2 and the second connecting plate 3 which are arranged at intervals are adopted in the embodiment, the sliding door guide rail beam 1 is further connected with a wheel cover (usually a rear wheel cover) in a stable manner, and the rigidity, the strength, the structural stability, the reliability and the strength durability of the whole body structure, particularly the installation structure of the sliding door guide rail, are obviously improved; the anti-torsion transformation performance brought by the connection of the sliding door guide rail beam 1 and the C column 4 and the D column 5 and the multipoint connection of the sliding door guide rail beam and the wheel cover also enables the vehicle to have better defending capability on possible collision conditions in the actual running process, and the safety of the vehicle in the running process is obviously improved. In the actual production and manufacturing process, the lower part of the rear wheel cover inner plate 7 can be preferably overlapped between the rear longitudinal beam 16 and the rear longitudinal beam cover plate 17 according to actual requirements, which is favorable for the Z-directional stability of the vehicle body structure, and can also promote the integrity of the vehicle body structure, thereby playing the role of assisting in enhancing the integral strength, rigidity and stability of the vehicle body structure

In the present embodiment, preferably, the first connecting plate 2 includes a first end connected to the sliding door rail cross member 1, a second end connected to the wheel house, and an intermediate section provided between the first end and the second end, wherein the intermediate section is provided at a side of the first end, the second end, away from the passenger compartment in the vehicle width direction.

Specifically, as shown in fig. 2, the middle section of the first connecting plate 2 protrudes to the outside of the vehicle body structure, after the vehicle is assembled, an outward protruding space is formed between the first connecting plate 2 and the passenger cabin, when an accident is encountered and the vehicle body is impacted, the outward protruding space can provide more deformation allowance for the vehicle body, the passenger safety of passengers in the passenger cabin is prevented from being seriously influenced due to the overlarge inward deformation degree of the vehicle body, and the outward protruding first connecting plate 2 can absorb more collision energy, so that the overall safety of the vehicle is obviously improved.

In the present embodiment, it is preferable that the charging port or the oil filler port 22 is provided on the wheel cover, and the first connection plate 2 and the second connection plate 3 are provided on both sides of the charging port or the oil filler port 22, respectively, in the vehicle length direction.

Specifically, as shown in fig. 8, the first connecting plate 2 and the second connecting plate 3 are arranged at two sides of the charging port or the oil filling port 22, so that the strength, the rigidity and the stability of the vehicle body structure, particularly the sliding door guide rail mounting structure, are improved, meanwhile, the structural strength and the rigidity of the charging port or the oil filling port 22 and surrounding areas thereof are improved, the effect of improving the rigidity is also improved, and the structural stability of the charging port or the oil filling port 22 is improved in the plugging process of the charging gun or the oil filling gun in actual use of the vehicle, so that the vehicle is durable and is not easy to deform. In the actual production and manufacturing process, the charging port or the oil filler reinforcing plate 15 can be arranged around the inner side of the charging port or the oil filler 22 according to actual conditions, so that the structural strength, the rigidity and the stability of the charging port or the oil filler 22 are further improved.

In the present embodiment, it is preferable that the sliding door rail cross member 1 includes a cross member plate 13 and a reinforcing plate 8 that are disposed in order in the vehicle width direction, the cross member plate 13 being fixedly connected with the reinforcing plate 8.

Specifically, as shown in fig. 2. The outside of the beam plate 13 needs to be provided with a sliding door guide rail when a later vehicle is assembled, the sliding door guide rail beam 1 is arranged to comprise at least a double-layer structure of the beam plate 13 and the reinforcing plate 8, and rigidity of a mounting point position of the guide rail is reinforced, so that strength, durability and reliability of the sliding door guide rail beam 1 are guaranteed when the sliding door repeatedly works, and integral strength, rigidity and torsion-resistant transformation performance of the sliding door guide rail beam 1 are remarkably improved.

In the present embodiment, it is further preferable that the first end of the first connecting plate 2 is disposed between the cross beam plate 13 and the reinforcing plate 8, and fixedly connected with the cross beam plate 13 and the reinforcing plate 8, respectively.

Specifically, as shown in fig. 2, in the preferred embodiment, the beam plate 13, the first connecting plate 2 and the reinforcing plate 8 form a three-layer structure of the beam plate 13, the first connecting plate 2 and the reinforcing plate 8, so that the strength, the rigidity and the torsion resistance of the joint of the three are remarkably improved; for the first connecting plate 2, two sides of one end of the first connecting plate are respectively and firmly connected with the beam plate 13 and the reinforcing plate 8, and in the actual running process of the vehicle, the beam plate 13 and the reinforcing plate 8 always have clamping and stabilizing effects on the first connecting plate 2, so that the connection between the first connecting plate and the whole vehicle body structure is more stable, and the strength and the use stability are higher; for the beam plate 13 and the reinforcing plate 8, the addition of the first connecting plate 2 enables the overall strength and rigidity of the sliding door guide rail beam 1 to be higher, and further improves the torsion-resistant transformation performance, and further improves the strength, durability and reliability of the sliding door guide rail beam 1 when the sliding door repeatedly works.

In this embodiment, it is further preferred that the second connection plate 3 includes a third end connected to the sliding door rail beam 1, which is provided between the beam plate 13 and the reinforcement plate 8, and a fourth end connected to the wheel house.

Specifically, the technical effect of the present preferred embodiment is similar to that of the foregoing preferred embodiment in which the first connecting plate 2 is disposed between the cross beam plate 13 and the reinforcing plate 8, that is, the mechanical properties such as strength, rigidity and torsion-resistant transformation performance of the entire sliding door rail cross beam 1 are further improved, and at the same time, the connection stability and strength between the second connecting plate 3 and the vehicle body structure are also improved.

In the present embodiment, it is further preferable that the cross beam plate 13 has a mounting portion thereon configured to fix the sliding door rail, and a face of the mounting portion near the passenger compartment is fixedly connected with the reinforcement 8 plate in the width direction of the vehicle.

Specifically, as shown in fig. 2, the reinforcing plate 8 is fixedly connected to the side of the mounting portion of the cross beam 13, which is close to the passenger compartment, that is, the inner side thereof, so that the strength, rigidity and torsion-resistance transformation performance of the entire sliding door rail cross beam 1 are improved without affecting the arrangement of the rails.

In the present embodiment, it is further preferable that the reinforcing plate 8 includes a connecting portion fixedly connected with the mounting portion of the cross beam plate 13.

In this embodiment, it is further preferable that the cross section of the cross beam plate 13 has a "several" shape structure, and the cross section of the reinforcing plate 8 has a "W" shape or a plurality of "several" shapes connected in sequence.

Specifically, as shown in fig. 2, for the cross beam plate 13, the structure designed into a shape of a Chinese character 'ji' can provide sufficient installation space for the arrangement of the later guide rail, so that the installation is stable, meanwhile, the internal space of the vehicle body structure is fully utilized, the guide rail is prevented from protruding outwards to occupy too much unnecessary space, and the guide rail arranged too convexly also can influence the overall safety and structural stability of the vehicle.

In the present embodiment, it is further preferable that the intermediate protruding portion of the "W" shaped structure is formed as the connecting portion; or the connection part of two adjacent Chinese character 'ji' -shaped structures is formed into a connection part.

Specifically, as shown in fig. 2, for the reinforcing plate 8, the reinforcing plate 8 is disposed inside the beam plate 13, is fixedly connected with the beam plate 13 and is in a W shape or a plurality of sequentially connected shapes, a space is formed between the protruding portion of the reinforcing plate 8 protruding toward the inside of the vehicle body structure and the beam plate 13, the space can effectively improve the structural strength and rigidity of the beam plate 13, and the space can provide a sufficient deformation space when the vehicle is accidentally collided, can absorb more energy, and improves the overall safety of the vehicle, and the bent reinforcing plate 8 can also provide more support and reinforcing effects for the beam plate 13.

In this embodiment, it is preferable that the vehicle further includes a rail front mounting plate 11, the rail front mounting plate 11 is connected to an end portion of the sliding door rail beam 1 and is fixedly connected to the C pillar 4, and in the vehicle width direction, at least part of the rail front mounting plate 11 is bent toward the passenger compartment direction to form an avoidance recess;

the C pillar 4 includes a C pillar reinforcement plate 12 and a C pillar inner panel 14 that are disposed in order in the vehicle width direction, a first cavity is formed between the avoidance recess and a part of the structure of the C pillar reinforcement plate 12, and a second cavity is formed between a part of the structure of the C pillar reinforcement plate 12 and a part of the structure of the C pillar inner panel 14.

Specifically, as shown in fig. 1 and fig. 4, the main technical effect of the preferred embodiment is that after the follow-up sliding door is in sliding connection with the guide rail of the sliding door, when the sliding door is completely closed, sufficient placing space is provided for the pulley of the sliding door, so that the sliding door and the vehicle body are more stably and tightly closed, the tightness is better, and phenomena such as water leakage and air leakage are avoided; fig. 4 shows a preferred embodiment in the actual production process, as can be seen from fig. 4, the slope at the avoidance recess is larger, and compared with the slope of the C-pillar inner plate 14 that is closer to the inner side of the vehicle body structure than the avoidance recess, a space with a certain volume is formed between the avoidance recess and the C-pillar inner plate 14, the C-pillar reinforcing plate 12 bent into a slightly Z-shape is arranged in the space, a first cavity between the avoidance recess and a part of the structure of the C-pillar reinforcing plate 12, and a second cavity between a part of the structure of the C-pillar reinforcing plate 12 and a part of the structure of the C-pillar inner plate 14 are formed, the first cavity and the second cavity can promote the overall impact resistance of the C-pillar 4, can absorb more energy when encountering an unexpected collision, and provide more space for the overall deformation of the C-pillar 4, so as to avoid serious injury to passengers caused by the deformation of the C-pillar 4 toward the inner side of the vehicle body structure after encountering the unexpected collision; the C column reinforcing plate 12 is bent to form a shape, so that more deformation can be avoided in the two directions of the inner side of the vehicle body structure and the outer side of the vehicle body structure, whether the front mounting plate 11 of the guide rail deforms inwards or the inner plate 14 of the C column deforms inwards, the C column reinforcing plate 12 is not easy to be influenced and deforms obviously, the strength and the rigidity are lost, the life safety of passengers is influenced, and the first cavity and the second cavity are combined, so that the C column reinforcing plate has good impact force absorption performance in the two directions; and the shape of buckling of the C column reinforcing plate 12 can provide more strength, rigidity, supportability and stability in the vertical direction compared with the flat plate shape, and the overall mechanical property, durability and stability of the C column 4 can be improved.

In the present embodiment, it is further preferable that the first cavity is provided on a side of the second cavity away from the D pillar in the vehicle length direction.

Specifically, as shown in fig. 4, the first cavity and the second cavity are respectively arranged at the outer side and the inner side of the C-pillar reinforcing plate 12, so that the whole C-pillar 4 has a good absorption effect on impact energy from the inner side and the outer side, and the strength, the rigidity and the stability of the whole C-pillar 4 are improved; the first cavity, the second cavity combines the C post reinforcing plate 12 to buckle the "Z" form that forms for C post reinforcing plate 12 can both dodge more deformation in the inboard and the outside two directions of body structure, no matter the mounting panel 11 is to inside deformation or C post inner panel 14 is to inside deformation before the guide rail, C post reinforcing plate 12 all is difficult for being swept and obvious deformation leads to losing intensity and rigidity, thereby influence passenger life safety, first cavity and second cavity make C post 4 wholly have fine impact force absorption performance in inside and outside both sides.

The embodiment of the application also provides a vehicle, which comprises:

the vehicle body structure described in the embodiments or any of the preferred embodiments thereof;

the guide rail is fixedly arranged on the sliding door guide rail beam 1 and extends along the length direction of the vehicle;

The vehicle body structure is adopted to manufacture the vehicle, and the structure at the sliding door guide rail beam 1 has high rigidity, high strength, high supporting performance and high torsion resistance transformation performance, so that the strength durability and reliability of the sliding door during repeated work are ensured; the cavity structures and the bending structures at a plurality of positions in the vehicle body structure enable the whole vehicle to have better absorption effect on impact energy when in unexpected collision in the actual running process, and can allow more deformation without seriously injuring the life safety of passengers in the passenger cabin in the vehicle.

Specifically, referring to fig. 7 and 8, in the vehicle according to the embodiment of the present utility model, the vehicle having the above-described vehicle body structure is connected to the D-pillar 5 through the wheel cover, so that an annular structure, namely, a rear wheel cover ring 21, is formed, which is indicated by an annular dotted frame and its surrounding area in fig. 8; a rear triangular window ring 20, which is an annular structure shown in fig. 8 by another annular broken line frame and its surrounding area, is formed by connection of the D-pillar 5 to a side sill of a roof in a vehicle body structure; the C-pillar 4 is connected to the roof and the floor of the body structure to form an annular structure, i.e., a C-pillar 18, generally indicated by an annular dashed box and its surrounding area in fig. 7; the D pillar 5 is connected to the roof and the rear side member 16 in the vehicle body structure, and forms a ring-shaped structure, i.e., a D pillar ring 19, which is indicated by another ring-shaped broken line frame and its surrounding area in fig. 7. The plurality of annular structures are combined with each other to strengthen the rigidity and strength of the C column 4 and the D column 5, and also strengthen the whole body structure of the vehicle body.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. A vehicle body structure, characterized by comprising:

a C column and a D column;

the wheel casing, slide door guide rail crossbeam respectively through first connecting plate and second connecting plate with the wheel casing is connected, wherein, first connecting plate with the second connecting plate interval sets up.

2. The vehicle body structure according to claim 1, wherein the first connecting plate includes a first end connected to the sliding door rail cross member, a second end connected to the wheel house, and an intermediate section provided between the first end and the second end, wherein the intermediate section is convex toward a side away from the passenger compartment in the vehicle width direction.

3. The vehicle body structure according to claim 1, wherein the wheel cover is provided with a charging port or a fuel filler, and the first connection plate and the second connection plate are provided on both sides of the charging port or the fuel filler, respectively, in the vehicle length direction.

4. The vehicle body structure according to claim 1, wherein the sliding door rail cross member includes a cross member plate and a reinforcing plate provided in order in a vehicle width direction, the cross member plate being fixedly connected with the reinforcing plate.

5. The vehicle body structure according to claim 4, wherein the first end of the first connecting plate is disposed between the cross beam plate and the reinforcing plate and fixedly connected to the cross beam plate and the reinforcing plate, respectively.

6. The vehicle body structure of claim 4, wherein the second connecting plate includes a third end connected to the sliding door rail beam and a fourth end connected to the wheel housing, the third end being disposed between the beam plate and the reinforcement plate and fixedly connected to the beam plate and the reinforcement plate, respectively.

7. The vehicle body structure according to claim 4, wherein the cross beam plate has a mounting portion thereon, the mounting portion being configured to fix the sliding door rail, and a face of the mounting portion adjacent to the passenger compartment is fixedly connected to the reinforcement plate in a width direction of the vehicle.

8. The vehicle body structure according to claim 7, wherein the reinforcing plate includes a connecting portion fixedly connected to the mounting portion.

9. A vehicle body structure according to claim 8, wherein the cross section of the cross-beam panel has a "figure" structure, and the cross section of the reinforcement panel has a "W" shape or a plurality of "figures" connected in sequence.

10. A vehicle body structure according to claim 9, wherein the intermediate protruding portion of the "W" -shaped structure is formed as a connecting portion; or the connection part of two adjacent Chinese character 'ji' -shaped structures is formed into a connection part.

11. The vehicle body structure according to claim 1, further comprising a rail front mounting plate connected to an end of the sliding door rail cross member and fixedly connected to the C-pillar, at least a portion of the rail front mounting plate being bent toward the passenger compartment direction in the vehicle width direction to form a recess for avoidance;

12. The vehicle body structure according to claim 11, wherein the first cavity is provided on a side of the second cavity remote from the D-pillar in a vehicle length direction.

13. A vehicle, characterized by comprising:

the vehicle body structure of any one of claims 1 to 12;