CN118254885A

CN118254885A - Vehicle body structure and vehicle

Info

Publication number: CN118254885A
Application number: CN202311488676.5A
Authority: CN
Inventors: 韩西姗; 王丛; 杨树成; 闫军飞; 朱明烨
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Filing date: 2023-11-08
Publication date: 2024-06-28

Abstract

The invention relates to a vehicle body structure and a vehicle, wherein the vehicle body structure comprises a front anti-collision cross beam, an energy absorption barrel, a front longitudinal beam assembly and a front wheel cover upper longitudinal beam assembly; the front end of the energy absorption cylinder is connected with the front anti-collision cross beam; the front end of the front longitudinal beam assembly is connected with the rear end of the energy absorption barrel; the front wheel cover upper longitudinal beam assembly is connected with the front longitudinal beam assembly, the front wheel cover upper longitudinal beam assembly is arranged on the outer side of the front longitudinal beam assembly, and the front end of the front wheel cover upper longitudinal beam assembly is connected with the rear end of the energy absorption cylinder; the front end of the front longitudinal beam assembly and the front end of the front wheel cover upper longitudinal beam assembly are arranged side by side along the left-right direction of the vehicle; the front end inner side wall of the front longitudinal beam assembly and the rear end inner side wall of the energy absorption barrel are collinear in the front-rear direction of the vehicle; the front end outer side wall of the front wheel cover upper longitudinal beam assembly and the rear end outer side wall of the energy absorption barrel are collinear in the front-rear direction of the vehicle. By the design, the absorption rate of the energy absorption barrel to collision energy is increased, the intrusion amount of the deformation of the vehicle body structure to the passenger cabin is reduced, and the safety of the passenger cabin is improved.

Description

Vehicle body structure and vehicle

Technical Field

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

Background

With the popularization of vehicles, the requirements of people on the collision safety of the vehicles are increasing. In the collision process of the vehicle, the anti-collision beam is poor in force transmission effect in the backward force transmission process, so that the front cross beam and the front coaming are subjected to excessive collision energy, and the deformation of the front cross beam and the front coaming invades the passenger cabin to be too large, so that the safety of passengers is threatened.

Disclosure of Invention

The invention provides a vehicle body structure and a vehicle, which are used for improving the safety of a passenger cabin.

The embodiment of the invention provides a vehicle body structure, which comprises a front anti-collision cross beam, an energy absorption cylinder, a front longitudinal beam assembly and a front wheel cover upper longitudinal beam assembly;

The front end of the energy absorption cylinder is connected with the front anti-collision cross beam;

the front end of the front longitudinal beam assembly is connected with the rear end of the energy absorption barrel;

the front wheel cover upper longitudinal beam assembly is connected with the front longitudinal beam assembly, the front wheel cover upper longitudinal beam assembly is arranged on the outer side of the front longitudinal beam assembly, and the front end of the front wheel cover upper longitudinal beam assembly is connected with the rear end of the energy absorption cylinder;

The front end of the front longitudinal beam assembly and the front end of the front wheel cover upper longitudinal beam assembly are arranged side by side along the left-right direction of the vehicle; the front end inner side wall of the front longitudinal beam assembly and the rear end inner side wall of the energy absorption barrel are collinear in the front-rear direction of the vehicle; the front end outer side wall of the front wheel cover upper longitudinal beam assembly and the rear end outer side wall of the energy absorption barrel are collinear in the front-rear direction of the vehicle.

Optionally, the inner cavity of the energy absorption cylinder is provided with longitudinal reinforcing ribs arranged along the front-rear direction of the vehicle;

the front end outer side wall of the front side member assembly is collinear with the longitudinal stiffener in the vehicle front-rear direction.

Optionally, the vehicle body structure further comprises a front cross member and an a-pillar assembly;

The front longitudinal beam assembly is connected with the front cross beam;

the rear end of the front wheel cover upper longitudinal beam assembly is connected with the upper end of the A column assembly, and the A column assembly is connected with the rear end of the front longitudinal beam assembly.

Optionally, the vehicle body structure further includes a dash panel connected with the front cross member to form a reinforcing cross member provided in a left-right direction of the vehicle therebetween;

The front longitudinal beam assembly is connected with the front coaming.

Optionally, the length of the reinforcing transverse cavity in the front-rear direction of the vehicle gradually increases from the middle to the two ends along the left-right direction of the vehicle.

Optionally, an upper cavity and a lower cavity are arranged at the rear end of the front longitudinal beam assembly along the front-rear direction of the vehicle, and the upper cavity and the lower cavity are arranged at intervals in the up-down direction of the vehicle.

Optionally, the upper cavity and the lower cavity on the front longitudinal beam assembly are at least partially connected with the a-pillar assembly in the left-right direction of the vehicle;

and the position corresponding to the upper cavity on the front longitudinal beam assembly is at least partially connected with the A column assembly in the front-rear direction of the vehicle.

Optionally, the upper cavity and the lower cavity on the front longitudinal beam assembly are at least partially connected to the inner side of the a-pillar assembly;

The position corresponding to the upper cavity on the front longitudinal beam assembly is at least partially connected to the front side of the A column assembly.

Optionally, the front rail assembly includes a front rail body, a front seal plate rear section, and a front rail rear section;

The front end of the front longitudinal beam main body is connected with the rear end of the energy absorption barrel, and the rear end of the front longitudinal beam main body is connected with the front cross beam;

The front sealing plate rear section is connected with the rear end of the front longitudinal beam main body and the A column assembly, the front longitudinal beam rear section is connected with the rear end of the front longitudinal beam main body and the A column assembly, and the front sealing plate rear section is matched with the front longitudinal beam rear section to form the upper cavity and the lower cavity.

Optionally, the a-pillar assembly comprises an a-pillar inner plate, an a-pillar outer plate and an a-pillar inner support plate; the A column inner plate is connected with the A column outer plate to form an A column cavity extending along the up-down direction of the vehicle; the A column inner supporting plate is arranged in the A column cavity;

The position corresponding to the lower cavity on the rear section of the front longitudinal beam is used for being connected with a threshold assembly through the A-pillar inner plate;

In the front-rear direction of the vehicle, the projection of the position corresponding to the upper cavity on the rear section of the front sealing plate is at least partially overlapped with the projection of the A column inner supporting plate;

And in the left-right direction of the vehicle, the projection of the positions corresponding to the upper cavity and the lower cavity on the rear section of the front longitudinal beam is at least partially overlapped with the projection of the A-pillar inner plate.

Optionally, the front longitudinal beam assembly further comprises a longitudinal beam sealing plate reinforcing plate connected with the rear section of the front sealing plate, and the longitudinal beam sealing plate reinforcing plate is matched with the rear section of the front sealing plate to form a reinforcing cavity.

Optionally, an inner side rail reinforcing plate is disposed on an inner side of the front side rail main body, and the inner side rail reinforcing plate is located on a position of the front side rail main body close to the front cross member.

Optionally, the vehicle body structure further includes a reinforcing bracket for connecting the dash panel and the center tunnel.

Optionally, the body structure further comprises a front subframe assembly; the front wheel cover upper longitudinal beam assembly is provided with a frame mounting point, and the front auxiliary frame assembly is connected with the frame mounting point.

Optionally, a projection of the front subframe assembly in a vehicle front-rear direction is configured to at least partially overlap a projection of the battery pack assembly in the vehicle front-rear direction.

The invention also provides a vehicle, which comprises the vehicle body structure according to any one of the technical schemes.

In the vehicle body structure and the vehicle provided by the embodiment of the invention, the front end of the front longitudinal beam assembly and the front end of the front wheel cover upper longitudinal beam assembly are arranged at the rear end of the energy absorption barrel side by side along the left-right direction of the vehicle, the front end inner side wall of the front longitudinal beam assembly is level with the rear end inner side wall of the energy absorption barrel, and the front end outer side wall of the front wheel cover upper longitudinal beam assembly is level with the rear end outer side wall of the energy absorption barrel; that is, the sum of the widths of the front end of the front side member assembly and the front end of the front wheel cover upper side member assembly in the vehicle left-right direction is equal to the width of the rear end of the energy absorbing cylinder in the vehicle left-right direction; the front end of the front longitudinal beam assembly and the front end of the front wheel cover upper longitudinal beam assembly are aligned with the rear end of the energy absorption cylinder; by the design, the width of the energy absorption barrel is increased, so that the front longitudinal beam assembly and the front wheel cover upper longitudinal beam assembly both play a role in supporting the energy absorption barrel, collision energy on the energy absorption barrel can be dispersed and transferred to the front longitudinal beam assembly and the front wheel cover upper longitudinal beam assembly, the absorption rate of the energy absorption barrel on the collision energy is increased, the intrusion amount of the structural deformation of the vehicle body to the passenger cabin is reduced, the safety of the passenger cabin is improved, the collision injury to drivers and passengers is reduced, and the safety of the drivers and the passengers is ensured; meanwhile, the support of the energy-absorbing cylinder is strengthened, the instability of the energy-absorbing cylinder in the energy-absorbing deformation process is avoided, and the instability risk is reduced.

Drawings

FIG. 1 is a schematic top view of a vehicle body structure according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a vehicle body structure according to an embodiment of the present invention;

FIG. 3 is a schematic top view in cross section of a vehicle body structure provided in an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of an energy absorber, a front rail assembly and a front wheel cover upper rail assembly according to one embodiment of the present invention;

FIG. 5 is a schematic view of a portion of an energy absorber, front rail assembly and front wheel cover upper rail assembly according to one embodiment of the present invention;

FIG. 6 is a schematic view of a portion of the structure of a front side rail assembly and a front wheel cover upper side rail assembly in the fore-and-aft direction of a vehicle provided in an embodiment of the present invention;

FIG. 7 is a schematic view showing a part of a structure of a vehicle body according to an embodiment of the present invention;

FIG. 8 is a schematic view of a portion of the rear section of a front closure plate and the rear section of a front rail according to an embodiment of the present invention;

FIG. 9 is a schematic view of a portion of the rear front side rail section and the inner A-pillar panel provided in accordance with one embodiment of the present invention;

FIG. 10 is a schematic view of a portion of the structure of a rear section of a front seal plate and an inner stay of an A-pillar according to an embodiment of the present invention;

fig. 11 is a schematic view of a portion of a front rail assembly according to an embodiment of the present invention.

Reference numerals in the specification are as follows:

1. A front bumper; 2. an energy absorption cylinder; 21. an energy absorbing shell; 22. longitudinal reinforcing ribs; 3. a front rail assembly; 31. a front side member main body; 32. a front sealing plate rear section; 33. a front longitudinal beam rear section; 34. a longitudinal beam sealing plate reinforcing plate; 35. an inner side rail reinforcing plate; a. an upper cavity; b. a lower cavity; 4. a front cross member; 5. the front wheel cover upper longitudinal beam assembly; 51. a front wheel cover upper longitudinal beam main body; 52. the front wheel cover is provided with a longitudinal beam front section; 53. the front wheel cover is arranged at the front section of the upper longitudinal beam inner plate; 54. a front lower connecting plate of the front wheel cover; 55. an outer support plate at the front section of the front sealing plate; 56. a front wheel cover rear connecting plate; 6. a column A assembly; 61. a column A inner plate; 62. an inner supporting plate of the A column; 7. front lower anti-collision beam assembly; 8. a front subframe assembly; 9. a central passage; 10. a threshold assembly; 110. a dash panel; 120. reinforcing the support; 130. the root of the first front longitudinal beam supports the bracket; 140. the root of the second front longitudinal beam supports the bracket; 150. the auxiliary frame mounting seat supports the bracket.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the 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.

As shown in fig. 1 to 4, the vehicle body structure provided by the embodiment of the invention comprises a front anti-collision cross beam 1, an energy absorption barrel 2, a front longitudinal beam assembly 3 and a front cross beam 4; the front end of the energy absorption barrel 2 is connected with the front anti-collision beam 1; the front end of the front longitudinal beam assembly 3 is connected with the rear end of the energy absorption barrel 2; the front wheel cover upper longitudinal beam assembly 5 is connected with the front longitudinal beam assembly 3, the front wheel cover upper longitudinal beam assembly 5 is arranged on the outer side of the front longitudinal beam assembly 3, and the front end of the front wheel cover upper longitudinal beam assembly 5 is connected with the rear end of the energy absorption barrel 2; the front end of the front longitudinal beam assembly 3 and the front end of the front wheel cover upper longitudinal beam assembly 5 are arranged side by side along the left-right direction of the vehicle; the front end inner side wall of the front longitudinal beam assembly 3 and the rear end inner side wall of the energy absorption barrel 2 are collinear in the front-rear direction of the vehicle; the front end outer side wall of the front wheel cover upper side member assembly 5 and the rear end outer side wall of the energy absorbing cylinder 2 are collinear in the vehicle front-rear direction.

The front anti-collision cross beam 1 and the energy absorption barrel 2 are parts for absorbing collision energy when the vehicle is collided, can effectively absorb the collision energy, and reduce the damage of the collision force to the front longitudinal beam assembly 3 as much as possible. When a vehicle collides with the front, collision force is transmitted to the energy absorption barrel 2 through the front anti-collision cross beam 1, and as the rear end of the energy absorption barrel 2 is respectively connected with the front longitudinal beam assembly 3 and the front wheel cover upper longitudinal beam assembly 5, part of the collision force passing through the energy absorption barrel 2 is transmitted to the front wheel cover upper longitudinal beam assembly 5 and then is transmitted to the A column assembly 6 connected with the front wheel cover upper longitudinal beam assembly 5 through the front wheel cover upper longitudinal beam assembly 5; the other part is transmitted to the front side member assembly 3, and then transmitted to the front cross member 4, the dash panel 110 and the a-pillar assembly 6 connected to the front side member assembly 3 through the front side member assembly 3.

In the vehicle body structure provided by the embodiment of the invention, the front end of the front longitudinal beam assembly 3 and the front end of the front wheel cover upper longitudinal beam assembly 5 are arranged at the rear end of the energy absorption cylinder 2 side by side along the left-right direction of the vehicle, the inner side wall of the front end of the front longitudinal beam assembly 3 is level with the inner side wall of the rear end of the energy absorption cylinder 2, and the outer side wall of the front end of the front wheel cover upper longitudinal beam assembly 5 is level with the outer side wall of the rear end of the energy absorption cylinder 2; that is, the sum of the widths of the front end of the front side member assembly 3 and the front end of the front wheel cover upper side member assembly 5 in the vehicle left-right direction is equal to the width of the rear end of the energy absorbing cylinder 2 in the vehicle left-right direction; and the front end of the front longitudinal beam assembly 3 and the front end of the front wheel cover upper longitudinal beam assembly 5 are aligned with the rear end of the energy absorption barrel 2; by the design, the width of the energy absorption barrel 2 is increased, the front longitudinal beam assembly 3 and the front wheel cover upper longitudinal beam assembly 5 have supporting effects on the energy absorption barrel 2, so that collision energy on the energy absorption barrel 2 can be transmitted to the front longitudinal beam assembly 3 and the front wheel cover upper longitudinal beam assembly 5 in a dispersed manner, the absorption rate of the collision energy by the energy absorption barrel 2 is increased, the intrusion amount of the structural deformation of a vehicle body to a passenger cabin is reduced, the safety of the passenger cabin is improved, the collision injury to drivers is reduced, and the safety of the drivers and passengers is ensured; meanwhile, the support of the energy-absorbing cylinder 2 is strengthened, the instability of the energy-absorbing cylinder 2 in the energy-absorbing deformation process is avoided, and the instability risk is reduced.

In one embodiment, as shown in fig. 4, the inner cavity of the energy-absorbing cylinder 2 is provided with longitudinal reinforcing ribs 22 arranged along the front-rear direction of the vehicle; the front end outer side wall of the front side member assembly 3 is collinear with the longitudinal bead 22 in the vehicle front-rear direction.

As an example, the energy-absorbing cylinder 2 includes an energy-absorbing shell 21 and a longitudinal reinforcing rib 22, an energy-absorbing space is provided in the energy-absorbing shell 21, and the longitudinal reinforcing rib 22 is provided in the energy-absorbing shell 21 in the vehicle front-rear direction to partition the energy-absorbing space into at least two energy-absorbing chambers. In this example, the longitudinal reinforcing ribs 22 extending in the front-rear direction of the vehicle are disposed in the energy-absorbing shell 21, so that the energy-absorbing space is divided into at least two energy-absorbing cavities in the left-right direction of the vehicle, the length of the energy-absorbing cylinder 2 in the left-right direction of the vehicle is increased, the overall strength of the energy-absorbing cylinder 2 is enhanced, and more collision energy can be absorbed by the energy-absorbing cylinder 2.

Preferably, a plurality of longitudinal reinforcing ribs 22 are provided, and the plurality of longitudinal reinforcing ribs 22 are arranged at intervals in the left-right direction of the vehicle; by the design, the length of the energy absorption barrel 2 in the left-right direction of the vehicle is increased as much as possible, the stability of the compression process of the energy absorption barrel 2 in the front-back direction of the vehicle is ensured, and more collision energy can be absorbed.

As an example, the front end outer side wall of the front side member assembly 3 is collinear with the longitudinal bead 22 in the vehicle front-rear direction. That is, the front end outer side wall of the front side member assembly 3 is flush with the longitudinal stiffener 22; by the design, the length of the front end of the front longitudinal beam assembly 3 in the left-right direction of the vehicle is increased, the overlapping amount of the front longitudinal beam assembly 3 and the energy absorption barrel 2 is increased, the front longitudinal beam assembly 3 can absorb more collision energy, the front wheel cover upper longitudinal beam assembly 5 is conveniently connected with the front longitudinal beam assembly 3, and the resistance of the front longitudinal beam assembly 3 in the collision process is ensured.

In one embodiment, as shown in FIGS. 1-3, the body structure further includes a front wheel cover upper rail assembly 5 and an A-pillar assembly 6; the front longitudinal beam assembly 3 is connected with the front cross beam 4; the rear end of the front wheel cover upper longitudinal beam assembly 5 is connected with the A column assembly 6, and the A column assembly 6 is connected with the rear end of the front longitudinal beam assembly 3.

As an example, the front side member assembly 3 is connected to the front cross member 4, and the rear end of the front wheel cover upper side member assembly 5 extends obliquely upward and is connected to the upper end of the a pillar assembly 6, and the lower end of the a pillar assembly 6 is connected to the rear end of the front side member assembly 3; the design is that a part of collision force passing through the energy absorption barrel 2 is transmitted to the front wheel cover upper longitudinal beam assembly 5 and then transmitted to the A column assembly 6 through the front wheel cover upper longitudinal beam assembly 5; another part is transferred to the front side member assembly 3, and since the front side member assembly 3 is connected to the front cross member 4 and the rear end of the front side member assembly 3 is connected to the a pillar assembly 6, the collision force is transferred to the front side member assembly 3 and then divided into two parts, the first part of the collision force is transferred from the front side member assembly 3 to the front cross member 4 and then to the central passage 9 connected to the front cross member 4, and the second part of the collision force is transferred from the front side member assembly 3 to the a pillar assembly 6.

In the example, a front anti-collision cross beam 1, an energy absorption barrel 2, a front longitudinal beam assembly 3 and a front cross beam 4 are sequentially connected to form a first force transmission path; the front anti-collision cross beam 1, the energy absorption barrel 2, the front longitudinal beam assembly 3 and the A column assembly 6 are sequentially connected to form a second force transmission path; the front anti-collision cross beam 1, the energy absorption barrel 2, the front wheel cover upper longitudinal beam assembly 5 and the A column assembly 6 are sequentially connected to form a third force transmission path; when the vehicle collides in the front, the collision energy is transmitted through the three paths, so that the absorption amount of the collision energy can be increased, and the rest of the collision energy can be effectively transmitted to the framework structures of the vehicle body such as the A-pillar assembly 6, the central passage 9 and the like, thereby reducing the collision energy received by the front cross beam 4, reducing the intrusion amount of the front cross beam 4 to the passenger cabin, improving the safety of the passenger cabin, reducing the collision injury to drivers and passengers and ensuring the safety of the drivers and the passengers.

In one embodiment, as shown in fig. 5 and 6, the front wheel cover upper rail assembly 5 includes a front wheel cover upper rail main body 51, a front wheel cover upper rail front section 52, a front wheel cover upper rail inner panel front section 53, a front wheel cover front lower connection plate 54, a front seal plate front section outer stay plate 55, and a front wheel cover rear connection plate 56; the front end of the front wheel cover upper longitudinal beam front section 52 is connected with the rear end of the energy absorption barrel 2, and the rear end of the front wheel cover upper longitudinal beam front section 52 is connected with the upper end of the A column assembly 6 through the front wheel cover upper longitudinal beam main body 51; the front wheel cover upper longitudinal beam inner plate front section 53 is respectively connected with the front wheel cover upper longitudinal beam front section 52 and the front wheel cover upper longitudinal beam main body 51; the front wheel cover rear connecting plate 56 is respectively connected with the front wheel cover upper longitudinal beam inner plate front section 53 and the front wheel cover upper longitudinal beam main body 51; the front section outer support plate 55 of the front sealing plate is respectively connected with the front section 52 of the upper longitudinal beam of the front wheel cover and the energy absorption barrel 2; the front seal plate front section outer support plate 55 comprises a support plate top wall, a first side wall and a second side wall which are oppositely arranged on the support plate top wall; the first side wall and the second side wall are respectively connected with the front longitudinal beam assembly 3, so that the front sealing plate front section outer supporting plate 55 and the front longitudinal beam assembly 3 are enclosed to form a first cavity extending along the front-rear direction of the vehicle; the front wheel cover front lower connecting plate 54 is respectively connected with the front wheel cover upper longitudinal beam front section 52, the front wheel cover upper longitudinal beam inner plate front section 53, the front sealing plate front section outer supporting plate 55, the front longitudinal beam assembly 3 and the front wheel cover rear connecting plate 56.

The rear end of the front wheel cover upper longitudinal beam main body 51 is connected with the A column assembly 6, and the front end of the front wheel cover upper longitudinal beam main body 51 extends obliquely downwards; the front wheel cover upper longitudinal beam front section 52 is connected with the front end upper surface of the front wheel cover upper longitudinal beam main body 51 and extends obliquely downwards to the rear end of the energy absorption barrel 2 along the structural trend of the front end upper surface of the front wheel cover upper longitudinal beam main body 51; the front wheel cover upper rail inner plate front section 53 is connected to the front end lower surface of the front wheel cover upper rail main body 51 and extends along the front end lower surface of the front wheel cover upper rail main body 51; the front wheel cover upper longitudinal beam front section 52 is connected with the front wheel cover upper longitudinal beam inner plate front section 53 to form a beam cavity structure. The front wheel cover rear connecting plate 56 is connected to the front wheel cover upper side rail inner panel front section 53 and the front wheel cover upper side rail main body 51, respectively. The front section outer support plate 55 of the front sealing plate is of a Chinese character 'ji' shape structure, the front section outer support plate 55 of the front sealing plate comprises a support plate top wall, a first side wall and a second side wall, the support plate top wall and the front longitudinal beam assembly 3 are arranged at intervals in the left-right direction of the vehicle, the first side wall and the second side wall are arranged at intervals in the up-down direction of the vehicle, the first side wall is positioned above the second side wall, and the first side wall and the second side wall are respectively connected with the front longitudinal beam assembly 3, so that the front section outer support plate 55 of the front sealing plate and the front longitudinal beam assembly 3 are enclosed to form a first cavity extending in the front-rear direction of the vehicle; the front end of the front wheel cover upper longitudinal beam front section 52 is connected with the first side wall, and the front end of the front sealing plate front section outer support plate 55 is connected with the rear end of the energy absorption barrel 2. The front wheel cover front lower connecting plate 54 is respectively connected with the front wheel cover upper longitudinal beam front section 52, the front wheel cover upper longitudinal beam inner plate front section 53, the front sealing plate front section outer supporting plate 55, the front longitudinal beam assembly 3 and the front wheel cover rear connecting plate 56; the front sealing plate front section outer supporting plate 55 seals and supplements the openings formed among the front wheel cover upper longitudinal beam front section 52, the front wheel cover upper longitudinal beam inner plate front section 53, the front sealing plate front section outer supporting plate 55, the front longitudinal beam assembly 3 and the front wheel cover rear connecting plate 56, and the parts are formed into a closed beam cavity structure.

In this example, the beam cavity in the front side member assembly 3 and the first beam cavity are arranged side by side in the vehicle left-right direction; the front end of the front wheel cover upper longitudinal beam front section 52 extends to the first side wall to form a beam cavity structure; by the design, the rear end of the energy absorption barrel 2 corresponds to three cavity structures, so that more collision energy can be absorbed, damage of the collision energy to the passenger cabin is reduced, and safety of drivers and passengers is guaranteed.

In the present embodiment, the upper side wall of the front side member assembly 3 in the vehicle up-down direction is flush with the first side wall, and the first side wall is welded and fixed to the front side member assembly 3; the lower side wall of the front side member assembly 3 in the vehicle up-down direction is flush with the second side wall, and the second side wall is welded and fixed to the front side member assembly 3.

In one embodiment, as shown in fig. 7, the vehicle body structure further includes a dash panel 110, the dash panel 110 being connected with the front cross member 4 to form a reinforcing cross member chamber therebetween that is disposed in the left-right direction of the vehicle; the dash panel 110 is connected to the front side member assembly 3. By the design, the front cross beam 4 is reinforced, so that the reinforced cross cavity can absorb more collision energy, the intrusion of the front cross beam 4 and the front coaming 110 to the passenger cabin is reduced, the damage to the passenger cabin is reduced, and the safety of drivers and passengers is ensured.

In one embodiment, as shown in fig. 7, the length of the reinforcing cross-member in the vehicle front-rear direction increases gradually from the middle to both ends in the vehicle left-right direction.

In this example, the length of the reinforcing lateral cavity in the vehicle front-rear direction gradually increases from the middle to both ends in the vehicle left-right direction; that is, the front-rear distance between the dash panel 110 and the front cross member 4 increases gradually from the middle to the left and right ends; namely, the connection between the front side member assembly 3, the dash panel 110 and the front cross member 4 is a triangular projection in the vehicle vertical direction. The design is such that when collision energy is transmitted to the joints of the front side member assembly 3, the dash panel 110 and the front cross member 4, a part of the collision energy is transmitted from the front side member assembly 3 to the dash panel 110 and the front cross member 4, and then transmitted to the central passage 9 through the dash panel 110; another portion of the crash energy is transmitted to the rear end of the front side member assembly 3 and then to the rocker assembly 10 through the a-pillar assembly 6. That is, the projection of the junction of the front side member assembly 3, the dash panel 110, and the front cross member 4 in the vehicle up-down direction is a triangular projection. The joint of the front longitudinal beam assembly 3, the front coaming 110 and the front cross beam 4 is designed into a triangular structure, so that the front longitudinal beam assembly 3, the front coaming 110 and the front cross beam 4 are connected more firmly, the force transmission and component force effects of the front longitudinal beam assembly 3 are improved, collision energy can be better transmitted to the central channel 9 and the threshold assembly 10 in a dispersing way, damage of the collision energy to a passenger cabin is reduced, and safety of drivers and passengers is ensured.

In one embodiment, as shown in fig. 8, the rear end of the front side member assembly 3 is provided with an upper cavity a and a lower cavity b that are disposed in the vehicle front-rear direction, the upper cavity a and the lower cavity b being disposed apart in the vehicle up-down direction. That is, the middle position of the rear end of the front longitudinal beam assembly 3 is attached to form an upper cavity a and a lower cavity b which are vertically separated, so that an avoidance space is provided for the installation of other structures of the vehicle, and the stability of the rear end structure of the front longitudinal beam assembly 3 is ensured.

In one embodiment, as shown in fig. 7 to 10, the upper cavity a and the lower cavity b on the front side member assembly 3 are at least partially connected to the a pillar assembly 6 in the vehicle left-right direction; the front side member assembly 3 is connected to the a-pillar assembly 6 at least partially in the vehicle front-rear direction at a position corresponding to the upper cavity a.

In this example, as shown in fig. 9 and 10, the a pillar assembly 6 is connected to the front side member assembly 3 at a position corresponding to the upper cavity a and the lower cavity b in the vehicle left-right direction; the a-pillar assembly 6 is connected to the front side member assembly 3 at a position corresponding to the upper cavity a in the vehicle front-rear direction. That is, the front side member assembly 3 is connected to the a-pillar assembly 6 at least partially in the left-right direction of the vehicle, and the front side member assembly 3 is connected to the a-pillar assembly 6 at least partially in the front-rear direction of the vehicle, so that the force transmission direction and effect of the front side member assembly 3 can be adjusted, collision energy can be transmitted to the a-pillar assembly 6 and the threshold assembly 10 connected to the a-pillar assembly 6, damage of the collision energy to the passenger compartment can be reduced, and safety of drivers and passengers can be ensured.

In one embodiment, as shown in fig. 7 to 10, the upper cavity a and the lower cavity b on the front side member assembly 3 are at least partially connected to the inner side of the a pillar assembly 6; the front side member assembly 3 is at least partially connected to the front side of the a pillar assembly 6 at a position corresponding to the upper cavity a. By the design, the front longitudinal beam assembly 3 is at least partially connected to the front side of the A-pillar assembly 6, the front longitudinal beam assembly 3 is at least partially connected to the inner side of the A-pillar assembly 6 and is connected with the threshold assembly 10 through the A-pillar assembly 6, so that the longitudinal beam assembly 3 is beneficial to transmitting collision energy to the A-pillar assembly 6 and the threshold assembly 10 connected with the A-pillar assembly 6, damage of the collision energy to a passenger cabin is reduced, and safety of drivers and passengers is ensured.

In one embodiment, as shown in fig. 7-10, the a-pillar assembly 6 at least partially overlaps with the projection of the upper cavity a in the vehicle front-rear direction; in the vehicle left-right direction, the a-pillar assembly 6 at least partially overlaps with the projection of the upper cavity a, and the a-pillar assembly 6 at least partially overlaps with the projection of the lower cavity b. By the design, the front longitudinal beam assembly 3 and the A column assembly 6 have enough contact areas in the front-back direction of the vehicle and the left-right direction of the vehicle, so that collision force on the front longitudinal beam assembly 3 is transmitted to the A column assembly 6, and good force transmission effect is ensured.

In one embodiment, as shown in fig. 7-10, the front rail assembly 3 includes a front rail body 31, a front seal plate rear section 32, and a front rail rear section 33; the front end of the front longitudinal beam main body 31 is connected with the rear end of the energy absorption barrel 2, and the rear end of the front longitudinal beam main body 31 is connected with the front cross beam 4; the front seal plate rear section 32 is connected with the rear end of the front longitudinal beam main body 31 and the A column assembly 6, the front longitudinal beam rear section 33 is connected with the rear end of the front longitudinal beam main body 31 and the A column assembly 6, the front seal plate rear section 32 is matched with the front longitudinal beam rear section 33, and an upper cavity a and a lower cavity b which are arranged in a separated mode are formed in the vehicle vertical direction.

In this example, as shown in fig. 8, a front seal plate rear section 32 and a front side member rear section 33 are connected to the rear end of the front side member main body 31, and the front seal plate rear section 32 and the front side member rear section 33 cooperate to form an upper cavity a and a lower cavity b that are provided separately in the vehicle up-down direction. That is, in the vehicle up-down direction, the intermediate positions of both the front seal plate rear section 32 and the front side rail rear section 33 are fitted to form upper and lower cavities a and b that are provided separately; by the design, an avoidance space is provided for the installation of other structures of the vehicle, and meanwhile, the stability of a cavity structure between the front sealing plate rear section 32 and the front longitudinal beam rear section 33 is improved.

In the present embodiment, as shown in fig. 9, the projection of the position corresponding to the lower cavity b on the front side member rear section 33 in the vehicle left-right direction at least partially overlaps with the projection of the rocker assembly 10 in the vehicle left-right direction. In this example, the front side member rear section 33 is connected to the rocker assembly 10 through the a pillar assembly 6, and the projection of the position corresponding to the lower cavity b on the front side member rear section 33 in the vehicle left-right direction at least partially overlaps with the projection of the rocker assembly 10 in the vehicle left-right direction; by the design, collision energy on the rear section 33 of the front longitudinal beam can be effectively transmitted to the threshold assembly 10 through the A-pillar assembly 6, damage of the collision energy to a passenger cabin is reduced, and safety of drivers and passengers is guaranteed.

In one embodiment, as shown in fig. 2 and 10, the a-pillar assembly 6 includes an a-pillar inner panel 61, an a-pillar outer panel, and an a-pillar inner gusset 62; the a-pillar inner panel 61 and the a-pillar outer panel are connected to form an a-pillar cavity extending in the vehicle up-down direction; the a-pillar inner stay plate 62 is disposed within the a-pillar cavity; the position corresponding to the lower cavity b on the front side member rear section 33 is used for connecting with the threshold assembly 10 through the a-pillar inner panel 61; the projection of the position corresponding to the upper cavity a on the front-closing plate rear section 32 in the vehicle front-rear direction at least partially overlaps with the projection of the a-pillar inner stay 62; the projections of the positions corresponding to the upper cavity a and the lower cavity b on the front side member rear section 33 at least partially overlap with the projection of the a pillar inner panel in the vehicle left-right direction.

As an example, an upper cavity a extending in the vehicle front-rear direction is formed between the front-seal-plate rear section 32 and the front-side-member rear section 33; in the front-rear direction of the vehicle, the position corresponding to the upper cavity a on the front sealing plate rear section 32 is connected to the a-pillar inner plate 61, in order to make the a-pillar cavity better receive the collision force along the front-rear direction of the vehicle from the front sealing plate rear section 32, the a-pillar inner supporting plate 62 is arranged in the a-pillar cavity, and the projection of the position corresponding to the upper cavity a on the front sealing plate rear section 32 is at least partially overlapped with the projection of the a-pillar inner supporting plate 62, namely, the a-pillar inner supporting plate 62 is arranged corresponding to the upper cavity a, thereby improving the force transmission effect and stability of the a-pillar assembly 6 and being beneficial to the a-pillar assembly 6 to absorb more collision energy.

As an example, an upper cavity a and a lower cavity b extending in the vehicle front-rear direction are formed between the front seal plate rear section 32 and the front side member rear section 33; the projections of the positions corresponding to the upper cavity a and the lower cavity b on the rear section 33 of the front side member in the left-right direction of the vehicle overlap at least partially with the projections of the a pillar inner panel; by the design, collision energy on the rear section 33 of the front longitudinal beam can be effectively transmitted to the A-pillar assembly 6 and transmitted to the threshold assembly 10 through the A-pillar inner plate 61, and the force transmission effect of the A-pillar assembly 6 is improved.

Preferably, as shown in fig. 9, the overlapping length of the position of the front side member rear section 33 corresponding to the upper cavity a with the projection of the a-pillar inner panel 61 in the vehicle left-right direction is not less than 3/4 of the projection length of the position of the a-pillar inner panel 61 corresponding to the upper cavity a in the vehicle left-right direction; the position corresponding to the lower cavity b on the front side member rear section 33 is projected in the vehicle left-right direction to be fully overlapped on the a-pillar inner panel 61.

The length of the projections in the vehicle lateral direction refers to the length of each projection in the vehicle front-rear direction.

In this example, the overlapping length of the upper cavity a on the front side member rear section 33 and 61 in the vehicle front-rear direction is not less than 3/4 of the length of 61 in the vehicle front-rear direction, so that the design can effectively transmit the collision energy on the front side member rear section 33 to the a-pillar assembly 6. The position corresponding to the lower cavity b in the front side member rear section 33 is projected in the vehicle lateral direction so as to be entirely overlapped with the a-pillar inner panel 61, and thus the collision energy in the front side member rear section 33 can be efficiently transmitted to the rocker assembly 10 through the a-pillar inner panel 61.

In one embodiment, as shown in fig. 3 and 11, the front rail assembly 3 further includes a rail seal plate stiffener 34 connected to the front seal plate rear section 32, the rail seal plate stiffener 34 cooperating with the front seal plate rear section 32 to form a stiffener cavity. In this example, the rail seal plate reinforcing plate 34 cooperates with the front seal plate rear section 32 to form a reinforcing cavity at the rear end of the front rail body 31, which reinforces the position on the front rail assembly 3 where it is connected to the front cross member 4, improves the bending stiffness and cross section force at that position, and prevents premature bending and crushing of that position during a collision.

In one embodiment, as shown in fig. 11, the inside of the front side member main body 31 is provided with an inside side member reinforcing plate 35, and the inside side member reinforcing plate 35 is located near the front cross member 4 of the front side member main body 31. In this example, the inside side member reinforcing plate 35 is provided at a position on the inside of the front side member main body 31 near the front cross member 4 to reinforce the front side member assembly 3, so that the rigidity and strength of the front side member assembly 3 are improved, the supporting effect on the joint between the front side member assembly 3 and the front cross member 4 is enhanced, and the position on the front side member assembly 3, which is connected with the front cross member 4, is prevented from being bent too early in the event of a collision.

In one embodiment, as shown in fig. 3, the vehicle body structure further includes a reinforcing bracket 120, and the reinforcing bracket 120 is used to connect the dash panel 110 and the center tunnel 9. By means of the design, the reinforcing support 120 is arranged between the front surrounding plate 110 and the central channel 9, the reinforcing support 120 plays a role in reinforcing the reinforcing transverse cavity, collision force on the front surrounding plate 110 is transmitted to the central channel 9 through the reinforcing support 120, stability of the front cross beam 4 and the front surrounding plate 110 is enhanced, intrusion of the front cross beam 4 and the front surrounding plate 110 into a passenger cabin is reduced, safety of the passenger cabin is improved, collision injury to drivers and passengers is reduced, and safety of the drivers and the passengers is guaranteed.

In the present embodiment, as shown in fig. 3, the reinforcing bracket 120 includes a bracket top wall, two bracket side walls extending from both ends of the bracket top wall in the vehicle left-right direction toward the dash panel 110, and a side wall flange extending from the end of each bracket side wall in the vehicle left-right direction; the two sidewall flanges are connected to the dash panel 110; in the vehicle up-down direction, one side of the bracket top wall is fitted with the dash panel 110, and the other side of the bracket top wall is used for fitting with the center tunnel 9.

In this example, the reinforcing bracket 120 has a rectangular structure, two bracket side walls are disposed at intervals along the left-right direction of the vehicle, two side wall flanges are respectively connected with the dash panel 110, and the bracket top wall is respectively attached to the dash panel 110 and the central passage 9. The reinforcing bracket 120 reinforces the middle portion of the reinforcing cross-chamber so that the collision force on the dash panel 110 is transmitted to the center tunnel 9 through the reinforcing bracket 120.

In one embodiment, as shown in fig. 7, the vehicle body structure further includes a first front side rail root support bracket 130, a second front side rail root support bracket 140, and a subframe mount pad support bracket 150 that are provided in order on the dash panel 110 in the vehicle left-right direction; the first front side rail root support bracket 130 is connected to the front side rail rear section 33, and the second front side rail root support bracket 140 is connected to the first front side rail root support bracket 130 and the subframe mount pad support bracket 150.

In this example, three flanges are provided on the first front side member root support bracket 130, the outer flange thereof is connected to the rear end of the front side member, and the rear flange and the inner flange thereof are both connected to the dash panel 110; the design thus supports the position where the front side member assembly 3, the front cross member 4, and the dash panel 110 are connected, and prevents the position from being bent in the left-right direction of the vehicle.

In this example, the subframe mount support bracket 150 is provided with four flanges, which are all connected with the dash panel 110, and the subframe mount support bracket 150 is provided opposite to the position on the dash panel 110 where it is connected with the subframe mount; the auxiliary frame mounting seat supporting bracket 150 plays a supporting role on the auxiliary frame mounting seat, so that the front surrounding plate 110 is propped through by collision force transmitted by the auxiliary frame during front collision, the front surrounding plate 110 is prevented from greatly invading the passenger compartment, and the safety of drivers and passengers is ensured.

In this example, the second front side member root support bracket 140 connects the first front side member root support bracket 130 and the subframe mount pad support bracket 150, forms an M-shaped reinforcing structure in the left-right direction of the vehicle, ensures continuity of reinforcing the reinforcing lateral cavity, enhances cavity rigidity of the reinforcing lateral cavity, and can also play a role in suppressing rollover of the vehicle floor during a collision.

In one embodiment, as shown in FIG. 2, the vehicle body structure further includes a front subframe assembly 8; the front wheel cover upper longitudinal beam assembly 5 is provided with a frame mounting point, and the front auxiliary frame assembly 8 is connected with the frame mounting point. By the design, the collision force can be transmitted backwards through the front auxiliary frame assembly 8, so that the collision energy transmitted to the front cross beam 4 and the front coaming 110 is reduced, the intrusion amount of the front cross beam 4 and the front coaming 110 to the passenger compartment is reduced, and the safety of the passenger compartment is improved.

In one embodiment, the projection of the front subframe assembly 8 in the vehicle front-rear direction is for at least partially overlapping with the projection of the battery pack assembly in the vehicle front-rear direction. By the design, the collision force on the front auxiliary frame assembly 8 can be transmitted backwards by using the battery pack assembly, so that the collision energy transmitted to the front cross beam 4 and the front coaming 110 is reduced, the intrusion of the front cross beam 4 and the front coaming 110 to the passenger compartment is reduced, and the safety of the passenger compartment is improved.

In one embodiment, as shown in fig. 2, the vehicle body structure further includes a front lower impact beam assembly 7, the front lower impact beam assembly 7 being located below the front impact beam 1, the front lower impact beam assembly 7 being connected to the front subframe assembly 8 and the front side rail assembly 3, respectively.

In the example, the front lower anti-collision beam assembly 7 is connected with the front auxiliary frame assembly 8 to form a fourth force transmission path; when collision occurs, collision force can be transmitted to the front auxiliary frame assembly 8 from the front lower anti-collision beam assembly 7, and then is transmitted backwards through the front auxiliary frame assembly 8, so that damage of collision energy to the passenger cabin is effectively reduced, and safety of drivers and passengers is guaranteed.

The invention also provides a vehicle comprising the vehicle body structure according to any one of the embodiments.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A car body structure is characterized by comprising a front anti-collision cross beam, an energy absorption barrel, a front longitudinal beam assembly and a front wheel cover upper longitudinal beam assembly;

2. The vehicle body structure according to claim 1, wherein an inner cavity of the energy absorbing cylinder is provided with a longitudinal reinforcing rib provided in a vehicle front-rear direction;

3. The vehicle body structure of claim 1, further comprising a front cross member and a-pillar assembly;

The front longitudinal beam assembly is connected with the front cross beam;

The rear end of the front wheel cover upper longitudinal beam assembly is connected with the A column assembly, and the A column assembly is connected with the rear end of the front longitudinal beam assembly.

4. The vehicle body structure according to claim 3, characterized in that the vehicle body structure further comprises a dash panel connected to the front cross member to form a reinforcing cross member provided in a vehicle left-right direction therebetween;

The front longitudinal beam assembly is connected with the front coaming.

5. The vehicle body structure according to claim 4, wherein the length of the reinforcing lateral cavity in the vehicle front-rear direction gradually increases from the middle toward both ends in the vehicle left-right direction.

6. The vehicle body structure according to claim 3, wherein the rear end of the front side member assembly is provided with an upper cavity and a lower cavity provided in the vehicle front-rear direction, the upper cavity and the lower cavity being provided separately in the vehicle up-down direction.

7. The vehicle body structure according to claim 6, wherein the upper cavity and the lower cavity on the front side member assembly are at least partially connected to the a-pillar assembly in a vehicle left-right direction;

8. The vehicle body structure of claim 7, wherein the upper cavity on the front side rail assembly is at least partially connected to the inside of the a-pillar assembly at a location corresponding to the lower cavity;

9. The vehicle body structure of claim 8, wherein the a-pillar assembly at least partially overlaps with a projection of the upper cavity in a vehicle fore-aft direction;

In the left-right direction of the vehicle, the A-pillar assembly at least partially overlaps with the projection of the upper cavity, and the A-pillar assembly at least partially overlaps with the projection of the lower cavity.

10. The vehicle body structure of claim 9, wherein the front rail assembly includes a front rail body, a front closure panel rear section, and a front rail rear section;

11. The vehicle body structure of claim 10, wherein the a-pillar assembly includes an a-pillar inner panel, an a-pillar outer panel, and an a-pillar inner gusset; the A column inner plate is connected with the A column outer plate to form an A column cavity extending along the up-down direction of the vehicle; the A column inner supporting plate is arranged in the A column cavity;

12. The vehicle body structure of claim 10, wherein the front rail assembly further comprises a rail seal plate reinforcement plate coupled to the rear section of the front seal plate, the rail seal plate reinforcement plate cooperating with the rear section of the front seal plate to form a reinforcement cavity.

13. The vehicle body structure according to claim 10, characterized in that an inside side member reinforcement plate is provided on an inside of the front side member main body, the inside side member reinforcement plate being located at a position of the front side member main body close to the front cross member.

14. The vehicle body structure of claim 4, further comprising a reinforcing bracket for connecting the dash panel and the center tunnel.

15. The vehicle body structure of claim 1, further comprising a front subframe assembly; the front wheel cover upper longitudinal beam assembly is provided with a frame mounting point, and the front auxiliary frame assembly is connected with the frame mounting point.

16. The vehicle body structure of claim 15, wherein the projection of the front subframe assembly in the vehicle fore-aft direction is for at least partially overlapping with the projection of the battery pack assembly in the vehicle fore-aft direction.

17. A vehicle comprising the vehicle body structure of any one of claims 1-16.