CN220363403U

CN220363403U - Vehicle body structure and automobile

Info

Publication number: CN220363403U
Application number: CN202321615812.8U
Authority: CN
Inventors: 林德佳; 郑颢; 王玉超; 刘宗华
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2024-01-19
Anticipated expiration: 2033-06-25

Abstract

The utility model provides a vehicle body structure and an automobile, wherein the vehicle body structure comprises an aluminum floor assembly, a threshold beam, a front anti-collision assembly, a rear anti-collision assembly, an A column assembly, a B column assembly and a connecting beam assembly; two sides of the floor assembly are respectively connected with a threshold beam, the front end of the floor assembly is provided with a front anti-collision assembly, and the rear end of the floor assembly is provided with a rear anti-collision assembly; the lower end of the A column assembly is overlapped with the front end of the threshold beam, and the A column assembly is overlapped with the front anti-collision assembly to form a front collision force transmission path; the lower end of the B column assembly is overlapped with the rear end of the threshold beam, and the B column assembly is overlapped with the rear anti-collision assembly to form a rear collision force transmission path; and two ends of the connecting beam assembly are respectively overlapped with the two B column assemblies to form a side collision force transmission path. In the utility model, the vehicle body structure adopts aluminum materials, the structure is novel, the weight of the electric vehicle body is reduced, and the design of a front collision force transmission path, a rear collision force transmission path and a side collision force transmission path is adopted.

Description

Vehicle body structure and automobile

Technical Field

The utility model belongs to the technical field of vehicle body structures, and particularly relates to a vehicle body structure and an automobile.

Background

At present, new energy vehicles develop rapidly, and as the power assembly and other devices of the traditional fuel oil vehicles are greatly different from those of the new energy vehicles, the structure of the vehicle body is changed, and meanwhile, the new energy vehicles are additionally provided with battery packs, so that the weight of the new energy vehicles is generally large, and the light weight level is important to consider. At present, a steel-aluminum hybrid vehicle body structure is a current research hotspot, but the cost and the connecting technology are a great difficulty; of course, some vehicle types are reformed based on the traditional fuel steel vehicle body structure, and the innovation in arrangement, vehicle body structure, material selection and the like is lacking, and the improvement of the quality of the preparation is faced, so that the original steel vehicle body structure cannot meet the requirement of collision performance.

Currently, there are two common vehicle body structures, namely a steel vehicle body structure, which has the problem of large weight; secondly, the steel-aluminum hybrid vehicle body structure has the problems that the connection of the structure is unstable in the collision process, and the collision safety performance is poor; at present, most new energy vehicle types are reformed based on traditional vehicle body structures, and the vehicle body structures cannot meet the collision safety performance and lightweight design requirements of the new energy vehicles which are increasingly required.

Disclosure of Invention

The utility model provides a vehicle body structure, which aims to solve the problems of larger weight and poorer collision safety performance of the existing vehicle body structure.

A vehicle body structure includes an aluminum floor assembly, a threshold beam, a front bumper assembly, a rear bumper assembly, an A-pillar assembly, a B-pillar assembly, and a connecting beam assembly;

the two sides of the floor assembly are respectively connected with the threshold beam, the front end of the floor assembly is provided with the front anti-collision assembly, and the rear end of the floor assembly is provided with the rear anti-collision assembly;

the lower end of the A column assembly is overlapped with the front end of the threshold beam, and the A column assembly is overlapped with the front anti-collision assembly to form a front collision force transmission path;

the lower end of the B column assembly is overlapped with the rear end of the threshold beam, and the B column assembly is overlapped with the rear anti-collision assembly to form a rear collision force transmission path;

and two ends of the connecting beam assembly are respectively overlapped with the two B column assemblies to form a side collision force transmission path.

Preferably, the vehicle body structure further comprises a vehicle body panel, the vehicle body panel is lapped on the A column assembly and the B column assembly, and the vehicle body panel is made of carbon fiber composite materials.

Preferably, the floor assembly includes a front floor, a rear floor, a front wall panel cross member casting, and a front wall panel cross member;

the front end of the front floor is connected with the front wall plate lower beam, the front wall plate lower beam is provided with the front wall plate beam casting, and the front wall plate lower beam is provided with the front anti-collision assembly;

the rear end of the front floor is connected with the front end of the rear floor, and the rear end of the rear floor is provided with the rear anti-collision assembly;

the two sides of the front floor and the rear floor are respectively connected with a threshold beam.

Preferably, the front anti-collision assembly comprises a front anti-collision beam assembly, an energy absorption box, a front longitudinal beam and a front tower seat;

the two ends of the front anti-collision beam assembly are respectively connected with an energy absorption box, the rear end of the energy absorption box is connected with the front end of the front longitudinal beam, and the rear end of the front longitudinal beam is in lap joint with the floor assembly and the A column assembly;

the first part of the front tower seat is lapped on the front longitudinal beam, and the second part of the front tower seat is lapped on the A column assembly.

Preferably, the front longitudinal beam comprises a front longitudinal beam front section, a front longitudinal beam middle section and a front longitudinal beam rear section which are sequentially connected;

the front end of the front longitudinal beam front section is connected with the rear end of the energy absorption box, and the front longitudinal beam front section is of an aluminum alloy structure;

the front longitudinal beam middle section is overlapped with the first part of the front tower seat, and the front longitudinal beam middle section is of a low-pressure casting structure;

the front longitudinal beam rear section is in lap joint with the floor assembly and the A column assembly, and the front longitudinal beam rear section is of a high-pressure die casting structure.

Preferably, a plurality of ribs arranged in the transverse direction of the vehicle body are arranged on the rear section of the front longitudinal beam.

Preferably, the front bumper assembly further comprises an upper short beam, one end of the upper short beam is connected to the front side member, and the other end of the upper short beam is connected to the a-pillar assembly at a position close to the front side member.

Preferably, the upper short beam includes a first connecting arm arranged in a vehicle body transverse direction, a second connecting arm extending in a first direction from one end of the first connecting arm, and a third connecting arm extending in a second direction from one end of the second connecting arm;

one end of the first connecting arm far away from the second connecting arm is connected to the front longitudinal beam, and one end of the third connecting arm far away from the second connecting arm is lapped on the position, close to the front longitudinal beam, on the A column assembly.

Preferably, the A-pillar assembly comprises an A-pillar inner plate, an A-pillar outer plate and an A-pillar square tube;

the A column inner plate is connected with the floor assembly, and the A column outer plate is lapped on the A column inner plate to form an A column support;

the first end of the A-column square tube is connected with the threshold beam, the second end of the A-column square tube is connected with the A-column support, and the front anti-collision assembly is tightly connected with the A-column square tube.

Preferably, the B-pillar assembly includes a B-pillar inner panel and a B-pillar outer panel;

the two ends of the connecting beam assembly are respectively connected with the B-pillar inner plate, and the B-pillar outer plate is lapped on the B-pillar inner plate to form a B-pillar support;

the lower extreme that the B post supported with the threshold roof beam links to each other, the rear end that the B post supported with rear portion buffer stop assembly links to each other.

Preferably, the B-pillar outer plate comprises a first pillar section, a second pillar section, a third pillar section and a fourth pillar section which are sequentially connected along the vertical direction of the vehicle body;

one end of the first column section is connected with the threshold beam;

the first column section and the second column section are made of square tube aluminum structures, the third column section is made of casting structures, and the fourth column section is made of aluminum structures.

Preferably, the rear anti-collision assembly comprises a rear longitudinal beam, a rear anti-collision beam, a rear longitudinal beam sealing plate, a first connecting beam, a rear tower seat and a second connecting beam;

the first end of the rear longitudinal beam is connected with the threshold beam, and the second end of the rear longitudinal beam is connected with the rear anti-collision beam;

the rear longitudinal beam sealing plate is lapped on the part, close to the threshold beam, of the rear longitudinal beam, one end of the first connecting beam is connected with the rear longitudinal beam sealing plate, and the second end of the first connecting beam is connected with the B column assembly;

the rear tower seat is arranged on the rear longitudinal beam, the first end of the second connecting beam is connected with the rear tower seat, and the second end of the second connecting beam is connected with the B column assembly.

Preferably, the rear longitudinal beam comprises a rear longitudinal beam front section, a rear longitudinal beam middle section and a rear longitudinal beam rear section which are sequentially connected;

one end of the front section of the rear longitudinal beam is connected with a threshold beam, the other end of the front section of the rear longitudinal beam and the middle section of the rear longitudinal beam are integrally formed into an arc-shaped casting, and an arc opening of the arc-shaped casting faces out of the vehicle;

one end of the rear section of the rear longitudinal beam is connected with the rear anti-collision beam, and the rear section of the rear longitudinal beam is made of an aluminum alloy structure.

Preferably, a connecting frame is arranged on the rear anti-collision beam, and the rear longitudinal beam further comprises a first supporting beam, a second supporting beam and a third supporting beam;

the first end of the first support beam is connected with the B column assembly, and the second end of the first support beam is connected with the rear tower seat;

the first end of the second supporting beam is connected with the rear tower seat, and the second end of the second supporting beam is connected with the connecting frame;

the first end of the third supporting beam is connected with the rear section of the rear longitudinal beam, and the second end of the third supporting beam is connected with the second supporting beam.

An automobile comprises the body structure.

According to the utility model, the floor assembly, the threshold beam, the front anti-collision assembly, the rear anti-collision assembly, the A column assembly, the B column assembly and the connecting beam assembly are all made of aluminum, so that the automobile is suitable for developing pure electric vehicles or hybrid electric vehicle platforms with aluminum automobile body structures, the defects and difficulties of the pure steel automobile body and the steel-aluminum hybrid automobile body structure are well overcome, and the maximum light weight is realized.

When the existing car body structure collides laterally, the phenomenon that the A column assembly is pulled out from the welding point of the door sill beam and the B column assembly is pulled out from the welding point of the door sill beam easily occurs, and the car body structure cannot meet the increasingly required collision safety performance of new energy cars. In order to solve the problem that the vehicle body structure cannot meet the increasingly required collision safety performance of the new energy vehicle, in the example, two sides of the floor assembly are respectively connected with a threshold beam to form a supporting base, the front end of the floor assembly is provided with a front anti-collision assembly, and the rear end of the floor assembly is provided with a rear anti-collision assembly; the lower end of the A column assembly is overlapped with the front end of the threshold beam, the A column assembly is overlapped with the front anti-collision assembly to form a front collision force transmission path, when a front collision occurs, the collision force is counteracted by the front anti-collision assembly and then transmitted to the A column assembly, and the A column assembly counteracts and then is transmitted to the threshold beam, so that the position where the front collision force is transmitted to the floor assembly can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the lower end of the B column assembly is overlapped with the rear end of the threshold beam, the B column assembly is overlapped with the rear anti-collision assembly to form a rear collision force transmission path, when a rear collision occurs, the collision force is counteracted by the rear anti-collision assembly and then transmitted to the B column assembly, and the B column assembly counteracts and then is transmitted to the threshold beam, so that the position where the rear collision force is transmitted to the floor assembly can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies to form a side collision force transmission path, when side collision occurs, collision force acts on the threshold beam and the two B-pillar assemblies, the two ends of the connecting beam assembly are respectively overlapped with the two B-pillar assemblies, the deformation degree of the B-pillar assemblies in side collision can be greatly slowed down, and the structural robustness is ensured.

The automobile body structure in this example adopts aluminium system material, novel structure can reduce electric motor car automobile body weight by a wide margin, and the while is front collision passes the power route, and the design of power route and side collision passes the power route is passed in the back collision, has guaranteed that automobile body structure synthesizes the collision performance and is satisfying under automobile body rigidity, NVH and collision security performance's the prerequisite, compares steel automobile body structure, and whole car weight greatly reduced satisfies lightweight design requirement, whole car comprehensive properties promotes by a wide margin.

Drawings

FIG. 1 is an isometric view of a vehicle body structure of the present utility model from a first perspective;

FIG. 2 is an isometric view of a second perspective of the body structure of the present utility model;

FIG. 3 is a top plan view of the vehicle body structure of the present utility model;

fig. 4 is a front view of a vehicle body structure in the present utility model;

FIG. 5 is an isometric view of a front bumper assembly of the present utility model;

FIG. 6 is an isometric view of a floor assembly of the present utility model;

fig. 7 is an isometric view of a rear bumper assembly of the present utility model.

Wherein, 1, floor assembly; 11. a front floor; 12. a rear floor; 13. front wall plate beam casting; 14. a front wall panel lower cross member; 2. a threshold beam; 3. a front bumper assembly; 31. a front bumper beam assembly; 32. an energy absorption box; 33. a front side member; 331. front section of front longitudinal beam; 332. a front longitudinal beam middle section; 333. a front longitudinal beam rear section; 334. convex ribs; 34. a front tower base; 35. an upper short beam; 351. a first connecting arm; 352. a second connecting arm; 353. a third connecting arm; 4. a rear bumper assembly; 41. a rear side member; 411. a rear longitudinal beam front section; 412. a rear longitudinal beam middle section; 413. rear section of rear longitudinal beam; 414. a first support beam; 415. a second support beam; 416. a third support beam; 42. a rear bumper beam; 43. a rear longitudinal beam sealing plate; 44. a first connecting beam; 45. a rear tower base; 46. a second connection beam; 5. a column A assembly; 51. a column A inner plate; 52. a pillar outer panel; 53. a column square tube; 6. a B column assembly; 61. a B-pillar inner panel; 62. a B pillar outer panel; 621. a first column section; 622. a second column section; 623. a third column section; 624. a fourth column section; 7. a connecting beam assembly; 8. a vehicle body panel; 9. and a connecting frame.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model 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 utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

1-7, the vehicle body structure comprises an aluminum floor assembly 1, a threshold beam 2, a front anti-collision assembly 3, a rear anti-collision assembly 4, an A-pillar assembly 5, a B-pillar assembly 6 and a connecting beam assembly 7; two sides of the floor assembly 1 are respectively connected with a threshold beam 2, the front end of the floor assembly 1 is provided with a front anti-collision assembly 3, and the rear end of the floor assembly 1 is provided with a rear anti-collision assembly 4; the lower end of the A column assembly 5 is overlapped with the front end of the threshold beam 2, and the A column assembly 5 is overlapped with the front anti-collision assembly 3 to form a front collision force transmission path; the lower end of the B-pillar assembly 6 is overlapped with the rear end of the threshold beam 2, and the B-pillar assembly 6 is overlapped with the rear anti-collision assembly 4 to form a rear collision force transmission path; and two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6 to form a side collision force transmission path.

As an example, the floor assembly 1, the threshold beam 2, the front anti-collision assembly 3, the rear anti-collision assembly 4, the a-pillar assembly 5, the B-pillar assembly 6 and the connecting beam assembly 7 are all made of aluminum, and are suitable for developing pure electric vehicles or hybrid electric vehicle platforms with aluminum vehicle body structures, so that the defects and difficulties of the pure steel vehicle bodies and the steel-aluminum hybrid vehicle body structures are well overcome, and the light weight is realized to the greatest extent.

When the existing car body structure collides laterally, the phenomenon that the welding spots of the A column assembly 5 and the threshold beam 2 are pulled out easily occurs, and the welding spots of the B column assembly 6 and the threshold beam 2 are pulled out easily, so that the car body structure cannot meet the increasingly required collision safety performance of new energy vehicles. In order to solve the problem that the vehicle body structure cannot meet the increasingly required collision safety performance of the new energy vehicle, in the example, two sides of the floor assembly 1 are respectively connected with a threshold beam 2 to form a supporting base, the front end of the floor assembly 1 is provided with a front collision avoidance assembly 3, and the rear end of the floor assembly 1 is provided with a rear collision avoidance assembly 4; the lower end of the A column assembly 5 is overlapped with the front end of the threshold beam 2, the A column assembly 5 is overlapped with the front anti-collision assembly 3 to form a front collision force transmission path, when a front collision occurs, collision force is counteracted by the front anti-collision assembly 3 and then transmitted to the A column assembly 5, and is counteracted by the A column assembly 5 and then transmitted to the threshold beam 2, so that the position of transmitting the front collision force to the floor assembly 1 can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the lower end of the B-pillar assembly 6 is overlapped with the rear end of the threshold beam 2, the B-pillar assembly 6 is overlapped with the rear anti-collision assembly 4 to form a rear collision force transmission path, when a rear collision occurs, the collision force is counteracted by the rear anti-collision assembly 4 and then transmitted to the B-pillar assembly 6, and the B-pillar assembly 6 counteracts and then is transmitted to the threshold beam 2, so that the position where the rear collision force is transmitted to the floor assembly 1 can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6 to form a side collision force transmission path, when side collision occurs, collision force acts on the threshold beam 2 and the two B-pillar assemblies 6, the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6, the deformation degree of the B-pillar assemblies 6 in side collision can be greatly slowed down, and the structural robustness is ensured.

In one embodiment, referring to fig. 1-4, the body structure further includes a body panel 8, the body panel 8 overlapping the a-pillar assembly 5 and the B-pillar assembly 6, the body panel 8 being formed from a carbon fiber composite material.

As an example, the vehicle body structure is introduced to further include a vehicle body covering member 8, the vehicle body covering member 8 is lapped on the a-pillar assembly 5 and the B-pillar assembly 6, the two a-pillar assemblies 5 and the two B-pillar assemblies 6 of the whole vehicle are connected, the vehicle body covering member 8 is made of carbon fiber composite materials, the vehicle body structure has excellent light weight effect and mechanical property, the vehicle body can be well protected, collision force received by the a-pillar assembly 5 and the B-pillar assembly 6 can be integrated and decomposed, the robustness of a front passenger cabin is guaranteed, and the injury of passengers is relieved.

In one embodiment, referring to fig. 2 and 6, the floor assembly 1 includes a front floor 11, a rear floor 12, a front wall panel cross member casting 13, and a front wall panel cross member lower 14; the front end of the front floor 11 is connected with a front wall plate lower beam 14, a front wall plate lower beam 14 is provided with a front wall plate beam casting 13, and a front anti-collision assembly 3 is arranged on the front wall plate lower beam 14; the rear end of the front floor 11 is connected with the front end of the rear floor 12, and the rear end of the rear floor 12 is provided with a rear anti-collision assembly 4; the front floor 11 and the rear floor 12 are connected to a threshold beam 2 on both sides, respectively.

As an example, the floor assembly 1 includes a front floor 11, a rear floor 12, a front wall plate cross beam casting 13 and a front wall plate cross beam 14, the rear end of the front floor 11 is connected with the front end of the rear floor 12, two sides of the front floor 11 and the rear floor 12 are respectively connected with a threshold beam 2 to form a bottom structure of a passenger cabin, the front end of the front floor 11 is connected with the front wall plate cross beam 14, the front wall plate cross beam casting 13 is arranged on the front wall plate cross beam 14, the front wall plate cross beam 14 is provided with a front anti-collision assembly 3, the rear end of the rear floor 12 is provided with a rear anti-collision assembly 4, the front anti-collision assembly 3 resists the front collision force, the rear anti-collision assembly 4 resists the rear collision force, the collision force is transmitted to the front wall plate cross beam casting 13 through the front anti-collision assembly 3 when the vehicle collides with the front, the front wall plate cross beam casting 13 is connected with the front wall plate cross beam 14 through an FDS, the structure connection firmness is improved, the intrusion of the front anti-collision assembly 3 into the passenger cabin is prevented, and the robustness of the passenger cabin is guaranteed.

In one embodiment, referring to fig. 1, 3 and 5, the front impact assembly 3 includes a front impact beam assembly 31, an energy absorber box 32, a front rail 33 and a front tower 34; the two ends of the front anti-collision beam assembly 31 are respectively connected with an energy absorption box 32, the rear end of the energy absorption box 32 is connected with the front end of a front longitudinal beam 33, and the rear end of the front longitudinal beam 33 is overlapped with the floor assembly 1 and the A-pillar assembly 5; a first portion of the front tower 34 is overlapped on the front side member 33 and a second portion of the front tower 34 is overlapped on the a-pillar assembly 5.

As an example, the front bumper assembly 3 includes a front bumper beam assembly 31, a crash box 32, a front side member 33 and a front tower 34, and when a front collision occurs, the front bumper beam assembly 31 is disposed at the forefront of the vehicle body structure, two ends of the front bumper beam assembly 31 are respectively connected with a crash box 32, a collision force is transmitted from the front bumper beam assembly 31 to the crash box 32 connected thereto, the rear end of the crash box 32 is connected with the front end of the front side member 33, the collision force is transmitted to the front side member 33 through the crash box 32, the rear end of the front side member 33 is overlapped with the floor assembly 1 and the a pillar assembly 5, and the collision force is transmitted to the floor assembly 1 and the a pillar assembly 5 through the front side member 33 in two paths, respectively, so that the arrangement can be well decomposed to offset the collision force, thereby preventing the structure of the front bumper assembly 3 from invading into the passenger compartment. The front anti-collision beam assembly 31 is connected with the front end of the energy-absorbing box 32 in a welding or screwing mode, a first part of the front tower seat 34 is lapped on the middle part of the front longitudinal beam 33, a second part of the front tower seat 34 is lapped on the part of the A column assembly 5 extending to the upper part of the front longitudinal beam 33, the front tower seat 34 is connected with the front longitudinal beam 33 in a bolt and FDS mixed mode, the front tower seat 34 is connected with the A column assembly 5 in a bolt and FDS mixed mode, the front longitudinal beam 33 and the A column assembly 5 can be connected together through the front tower seat 34, so that the connection area between the front longitudinal beam 33 and the A column assembly 5 can be increased, the structural connection is ensured to be more stable, and the collision performance of a vehicle body is improved.

In one embodiment, referring to fig. 1, 3 and 5, the front side member 33 includes a front side member front section 331, a front side member middle section 332 and a front side member rear section 333 connected in sequence; the front end of the front longitudinal beam front section 331 is connected with the rear end of the energy absorption box 32, and the front longitudinal beam front section 331 is of an aluminum alloy structure; the front longitudinal beam middle section 332 is overlapped with the first part of the front tower seat 34, and the front longitudinal beam middle section 332 is of a low-pressure casting structure; the front longitudinal beam rear section 333 is overlapped with the floor assembly 1 and the A column assembly 5, and the front longitudinal beam rear section 333 is of a high-pressure die casting structure.

As an example, the front longitudinal beam 33 includes a front longitudinal beam front section 331, a front longitudinal beam middle section 332 and a front longitudinal beam rear section 333 connected in sequence, the front longitudinal beam front section 331 and the front longitudinal beam middle section 332 are connected in a welding mode, wherein the front longitudinal beam middle section 332 is provided with a characteristic hole to increase the connection area with the front longitudinal beam front section 331, the front longitudinal beam middle section 332 is connected with the front longitudinal beam rear section 333 by adopting a bolt, and the front longitudinal beam rear section 333 is connected with the a-pillar assembly 5 by adopting an FDS, so that the design is novel. The front end of the front longitudinal beam front section 331 is connected with the rear end of the energy absorption box 32, and the front longitudinal beam front section 331 is of an aluminum alloy structure, so that the weight of the front longitudinal beam 33 can be reduced, and the light-weight design requirement can be met. The front side member middle section 332 is overlapped with the first part of the front tower seat 34, the front side member middle section 332 is of a low-die casting structure, the bending fracture characteristic design is provided (when the pre-designed collision force is achieved, the low-die casting structure is broken), after the energy absorption box 32 and the front side member front section 331 are completely crushed in the front high-speed collision process, the front side member middle section 332 is broken, the collision force of a force transmission path is interrupted, the front side member middle section 332 and the front side member rear section 333 can be prevented from invading the passenger cabin, the robustness of the passenger cabin is ensured, and the injury of the passenger is slowed down. The front longitudinal beam rear section 333 is in lap joint with the floor assembly 1 and the A column assembly 5, the front longitudinal beam rear section 333 is of a high-pressure die casting structure, the lap joint area of the front longitudinal beam rear section 333 and the floor assembly 1 and the A column assembly 5 is increased, the structure is stable, and the robustness of the passenger cabin is ensured.

In one embodiment, referring to fig. 5, a plurality of ribs 334 are provided on the front side rail rear section 333 that are arranged in the vehicle body transverse direction.

As an example, the front side member rear section 333 is provided with a plurality of ribs 334 arranged in the vehicle transverse direction, so that the strength of the front side member rear section 333 can be enhanced, and the weight can be sufficiently reduced on the premise of satisfying the strength performance.

In one embodiment, referring to fig. 1, the front bumper assembly 3 further includes an upper short beam 35, one end of the upper short beam 35 is connected to the front side member 33, and the other end of the upper short beam 35 is connected to the a-pillar assembly 5 at a position near the front side member 33.

As an example, one end of the upper short beam 35 is connected to the front end 331 of the front side member 33 by welding, and the other end of the upper short beam 35 is connected to the a-pillar assembly 5 at a position close to the front side member 33, so that the connection relationship between the front side member 33 and the a-pillar assembly 5 can be increased, and the capability of counteracting the front collision force can be further improved, thereby improving the collision performance of the vehicle body.

In an embodiment, referring to fig. 1 and 5, the upper short beam 35 includes a first connection arm 351 arranged in a vehicle body transverse direction, a second connection arm 352 extending in a first direction from one end of the first connection arm 351, and a third connection arm 353 extending in a second direction from one end of the second connection arm 352; one end of the first link arm 351, which is remote from the second link arm 352, is connected to the front side member 33, and one end of the third link arm 353, which is remote from the second link arm 352, is overlapped on the a-pillar assembly 5 at a position close to the front side member 33.

As an example, the upper short beam 35 includes a first link arm 351, a second link arm 352, and a third link arm 353, the first link arm 351 is arranged in the vehicle body transverse direction, the second link arm 352 is extended from one end of the first link arm 351 in a first direction, the third link arm 353 is extended from one end of the second link arm 352 in a second direction, wherein the first link arm 351 is arranged in the vehicle body transverse direction, the first direction forms an angle with the first link arm 351, the second direction forms an angle with the first direction, one end of the first link arm 351 away from the second link arm 352 is connected to the front side member 33, one end of the third link arm 353 away from the second link arm 352 is overlapped on the a-pillar assembly 5 at a position close to the front side member 33, so that the connection relationship between the front side member 33 and the a-pillar assembly 5 is increased, the cancellation capability against the front collision force is further improved, and the vehicle body collision performance is improved.

In one embodiment, referring to fig. 5 and 6, the a-pillar assembly 5 includes an a-pillar inner panel 51, an a-pillar outer panel 52, and an a-pillar square tube 53; the A-pillar inner plate 51 is connected with the floor assembly 1, and the A-pillar outer plate 52 is lapped on the A-pillar inner plate 51 to form an A-pillar support; the first end of the A-pillar square tube 53 is connected with the threshold beam 2, the second end of the A-pillar square tube 53 is connected with the A-pillar support, and the front anti-collision assembly 3 is tightly connected with the A-pillar square tube 53.

As an example, the a pillar assembly 5 includes an a pillar inner plate 51, an a pillar outer plate 52 and an a pillar square tube 53, the a pillar outer plate 52 and the a pillar inner plate 51 are connected by FDS to form an a pillar support, the a pillar support and the a pillar outer plate 52 are connected by FDS, the front anti-collision assembly 3 is tightly connected with the a pillar square tube 53, the front longitudinal beam rear section 333 is connected with the a pillar square tube 53 by FDS, the first end of the a pillar square tube 53 is connected with the door sill beam 2, and the front longitudinal beam rear section 333 is welded with the door sill beam 2; the a-pillar square tube 53 adopts an aluminum alloy square tube structure, and is connected with the sill beam 2 at the front-side beam rear section 333, and the lightweight level is greatly improved on the premise of meeting the strength.

In one embodiment, referring to fig. 2 and 7, the B-pillar assembly 6 includes a B-pillar inner panel 61 and a B-pillar outer panel 62; the two ends of the connecting beam assembly 7 are respectively connected with a B-pillar inner plate 61, and a B-pillar outer plate 62 is lapped on the B-pillar inner plate 61 to form a B-pillar support; the lower end of the B-pillar support is connected with the threshold beam 2, and the rear end of the B-pillar support is connected with the rear anti-collision assembly 4.

As an example, the B-pillar assembly 6 includes a B-pillar inner plate 61 and a B-pillar outer plate 62, two ends of the connecting beam assembly 7 are respectively connected with the B-pillar inner plate 61, and the B-pillar outer plate 62 is lapped on the B-pillar inner plate 61 to form a B-pillar support, so that the deformation degree of the B-pillar assembly 6 in side collision can be reduced, and the structural robustness is ensured; the connecting beam assembly 7 is connected with the B-pillar inner plate 61 in a threaded connection mode, the connecting beam assembly 7 adopts at least one cross beam, the connection relation between the B-pillar assemblies 6 on the left side and the right side can be enhanced, the B-pillar assemblies 6 invade a passenger cabin when collision is avoided, the lower end of the B-pillar support is connected with the threshold beam 2, the rear end of the B-pillar support is connected with the rear anti-collision assembly 4, side collision force can be decomposed onto the rear anti-collision assembly 4 and the threshold beam 2, the offset capability of the side collision force is improved, the collision performance of a vehicle body is improved, the B-pillar inner plate 61 adopts a whole aluminum material to replace steel materials of a traditional structure, compared with the B-pillar assemblies 6 of a steel structure in the prior art, the problems of outer plate tearing, welding spot tearing and the like can be avoided, and the collision safety performance and the light weight level are better.

In one embodiment, referring to fig. 7, the b pillar outer panel 62 includes a first pillar section 621, a second pillar section 622, a third pillar section 623, and a fourth pillar section 624 that are connected in series in the vehicle body vertical direction; one end of the first pillar section 621 is connected to the rocker 2; the first column segment 621 and the second column segment 622 are made of square tube aluminum material, the third column segment 623 is made of cast material, and the fourth column segment 624 is made of aluminum material.

As an example, the B pillar outer panel 62 includes a first pillar section 621, a second pillar section 622, a third pillar section 623, and a fourth pillar section 624 that are connected in this order in the vehicle body vertical direction; the first pillar segment 621 is connected to the rocker 2 by bolting or welding, and the fourth pillar segment 624 is connected to the body panel 8; the first pillar section 621 and the second pillar section 622 are made of square pipe aluminum material structures, and are side collision induction bending deformation areas, compared with aluminum material structures with other shapes, the side collision induction bending deformation areas are formed by the first pillar section 621 and the second pillar section 622, the side collision induction bending deformation areas are closely connected with the threshold beam 2, the B pillar outer plate 62 is prevented from being in a non-connection with the threshold beam 2 in the collision process, structural instability is avoided, and the side collision force of the B pillar outer plate 62 is combined, so that the collision force can be effectively counteracted; the third column section 623 is made of a casting structure, has certain strength, and ensures that the side collision stability and the survival space of passengers in the vehicle are not easy to deform; the fourth column section 624 is made of an aluminum material structure, and the stress deformation can provide buffer protection for the third column section 623, so that collision force is effectively slowed down, and the third column section 623 is prevented from being damaged, bent and invaded into the passenger cabin. The B-pillar outer panel 62 in this example is novel in structure, avoids the problems of outer panel tearing, welding spot tearing and the like, and is better in collision safety performance and light weight level.

In one embodiment, referring to fig. 2, 3 and 7, the rear bumper assembly 4 includes a rear side rail 41, a rear bumper rail 42, a rear rail seal plate 43, a first connection rail 44, a rear tower mount 45 and a second connection rail 46; the first end of the rear longitudinal beam 41 is connected with the threshold beam 2, and the second end of the rear longitudinal beam 41 is connected with the rear anti-collision beam 42; the rear longitudinal beam sealing plate 43 is lapped on the part of the rear longitudinal beam 41, which is close to the threshold beam 2, one end of the first connecting beam 44 is connected with the rear longitudinal beam sealing plate 43, and the second end of the first connecting beam 44 is connected with the B-pillar assembly 6; the rear tower mount 45 is mounted on the rear side member 41, and a first end of the second connecting beam 46 is connected to the rear tower mount 45, and a second end of the second connecting beam 46 is connected to the B-pillar assembly 6.

As an example, the rear anti-collision assembly 4 includes a rear longitudinal beam 41, a rear anti-collision beam 42, a rear longitudinal beam sealing plate 43, a first connecting beam 44, a rear tower seat 45 and a second connecting beam 46, the first end of the rear longitudinal beam 41 is connected with the door sill beam 2, the second end of the rear longitudinal beam 41 is connected with the rear anti-collision beam 42, the rear longitudinal beam 41 and the rear anti-collision beam 42 are connected in a welding mode, so that the firmness of structural connection can be ensured, when a rear collision occurs to the vehicle, the collision force is transmitted to the rear longitudinal beam 41 through the rear anti-collision beam 42 and then transmitted to the door sill beam 2 through the rear longitudinal beam 41, and the received collision force can be transmitted to the door sill beam 2, so that the rear anti-collision assembly 4 is prevented from invading a passenger cabin, and the robustness of the passenger cabin is ensured; the rear longitudinal beam sealing plates 43 are lapped on the parts, close to the threshold beams 2, of the rear longitudinal beams 41, so that the strength of the rear longitudinal beams 41 can be improved, and the rear longitudinal beams 41 can better resist collision; one end of the first connecting beam 44 is connected with the rear longitudinal beam sealing plate 43, the second end of the first connecting beam 44 is connected with the B-pillar assembly 6, and a force transmission path is formed between the rear longitudinal beam sealing plate 43 and the B-pillar assembly 6 through the first connecting beam 44; the rear tower seat 45 is arranged on the rear longitudinal beam 41, the first end of the second connecting beam 46 is connected with the rear tower seat 45, the second end of the second connecting beam 46 is connected with the B-pillar assembly 6, a force transmission path is formed between the rear tower seat 45 and the B-pillar assembly 6 through the second connecting beam 46, and collision force on the rear longitudinal beam 41 can be further decomposed onto the B-pillar assembly 6, so that the rear collision performance of the rear anti-collision assembly 4 is improved.

In one embodiment, referring to fig. 2, 3 and 7, the rear side rail 41 includes a rear side rail front section 411, a rear side rail middle section 412 and a rear side rail rear section 413 connected in sequence; one end of the front section 411 of the rear longitudinal beam is connected with the threshold beam 2, the other end of the front section 411 of the rear longitudinal beam and the middle section 412 of the rear longitudinal beam are integrally formed into an arc-shaped casting, and an arc opening of the arc-shaped casting faces the outside of the vehicle; one end of the rear longitudinal beam rear section 413 is connected with the rear anti-collision beam 42, and the rear longitudinal beam rear section 413 is made of an aluminum alloy structure.

As an example, the rear side member 41 includes a rear side member front section 411, a rear side member middle section 412, and a rear side member rear section 413; one end of the rear longitudinal beam rear section 413 is connected with the rear anti-collision beam 42, the rear longitudinal beam rear section 413 is made of an aluminum alloy structure, when a rear collision occurs, the rear anti-collision beam 42 and the rear longitudinal beam rear section 413 are crushed and deformed, the other end of the rear longitudinal beam front section 411 and the rear longitudinal beam middle section 412 are integrally formed into an arc casting, an arc opening of the arc casting faces out of a vehicle, an arc force transmission path is formed on the rear longitudinal beam 41, structural stability can be guaranteed in the collision process, the arc casting further comprises a rear wheel bag integrally formed, the number of dies and welding spots can be reduced, finally, one end of the rear longitudinal beam front section 411 is connected with the threshold beam 2, collision force is transmitted to the threshold beam 2, so that the received collision force is transmitted to the threshold beam 2, the rear longitudinal beam 41 is prevented from invading an occupant cabin, and the robustness of the occupant cabin is guaranteed.

In one embodiment, referring to fig. 2, 3 and 7, the rear impact beam 42 is provided with a connection frame 9; the rear side member 41 further includes a first support beam 414, a second support beam 415, and a third support beam 416; a first end of the first support beam 414 is connected with the B-pillar assembly 6, and a second end of the first support beam 414 is connected with the rear tower base 45; the first end of the second support beam 415 is connected with the rear tower base 45, and the second end of the second support beam 415 is connected with the connecting frame 9; the first end of the third support beam 416 is connected to the rear side rail rear section 413 and the second end of the third support beam 416 is connected to the second support beam 415.

As an example, the rear longitudinal beam 41 further includes a first support beam 414, a second support beam 415, and a third support beam 416, where the B-pillar assembly 6 is connected to the rear tower 45 by the first support beam 414, and the connecting frame 9 provided on the rear bumper beam 42 is connected to the rear tower 45 by the second support beam 415, so that another force transmission path is formed between the rear bumper beam 42 and the B-pillar assembly 6, so as to further improve the rear collision performance of the rear bumper assembly 4; the rear section 413 of the rear longitudinal beam is connected with the second support beam 415 through the third support beam 416, so that an upper force transmission path and a lower force transmission path of the rear anti-collision assembly 4 can be connected in parallel to form a closed loop force transmission path, the force transmission effect is better, the rear collision performance can be greatly improved, the collision safety performance of new energy devices of the rear floor 12 of the vehicle can be met, and an optimization thought can be provided for the improvement of the rear collision performance of the fuel vehicle.

The embodiment of the utility model provides an automobile, which comprises an automobile body structure.

As an example, the floor assembly 1, the threshold beam 2, the front anti-collision assembly 3, the rear anti-collision assembly 4, the a-pillar assembly 5, the B-pillar assembly 6 and the connecting beam assembly 7 are all made of aluminum, and are suitable for developing pure electric vehicles or hybrid electric vehicle platforms with aluminum vehicle body structures, so that the defects and difficulties of the pure steel vehicle bodies and the steel-aluminum hybrid vehicle body structures are well overcome, and the light weight is realized to the greatest extent. When the existing car body structure collides laterally, the phenomenon that the welding spots of the A column assembly 5 and the threshold beam 2 are pulled out easily occurs, the welding spots of the B column assembly 6 and the threshold beam 2 are pulled out easily, and the car body structure cannot meet the increasingly required collision safety performance of new energy cars; the lower end of the A column assembly 5 is overlapped with the front end of the threshold beam 2, the A column assembly 5 is overlapped with the front anti-collision assembly 3 to form a front collision force transmission path, when a front collision occurs, collision force is counteracted by the front anti-collision assembly 3 and then transmitted to the A column assembly 5, and is counteracted by the A column assembly 5 and then transmitted to the threshold beam 2, so that the position of transmitting the front collision force to the floor assembly 1 can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the lower end of the B-pillar assembly 6 is overlapped with the rear end of the threshold beam 2, the B-pillar assembly 6 is overlapped with the rear anti-collision assembly 4 to form a rear collision force transmission path, when a rear collision occurs, the collision force is counteracted by the rear anti-collision assembly 4 and then transmitted to the B-pillar assembly 6, and the B-pillar assembly 6 counteracts and then is transmitted to the threshold beam 2, so that the position where the rear collision force is transmitted to the floor assembly 1 can be effectively avoided, the robustness of a front passenger cabin is ensured, and the injury of passengers is relieved; the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6 to form a side collision force transmission path, when side collision occurs, collision force acts on the threshold beam 2 and the two B-pillar assemblies 6, the two ends of the connecting beam assembly 7 are respectively overlapped with the two B-pillar assemblies 6, the deformation degree of the B-pillar assemblies 6 in side collision can be greatly slowed down, and the structural robustness is ensured.

The automobile body structure in this example adopts aluminium system material, novel structure, can reduce electric motor car automobile body weight by a wide margin, and the design of front collision power transmission route, rear collision power transmission route and side collision power transmission route simultaneously has guaranteed that automobile body structure comprehensive collision performance is under satisfying automobile body rigidity, NVH and collision security performance's prerequisite, compares steel automobile body structure, and whole car weight greatly reduced, whole car comprehensive properties promotes by a wide margin.

The foregoing description of the preferred embodiments of the utility model 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 utility model.

Claims

1. A car body structure is characterized by comprising an aluminum floor assembly, a threshold beam, a front anti-collision assembly, a rear anti-collision assembly, an A column assembly, a B column assembly and a connecting beam assembly;

2. The body structure of claim 1, further comprising a body panel that overlaps the a-pillar assembly and the B-pillar assembly, the body panel being made of a carbon fiber composite material.

3. The vehicle body structure of claim 1, wherein the floor assembly includes a front floor, a rear floor, a front wall panel cross member casting, and a front wall panel cross member;

4. The vehicle body structure of claim 1, wherein the front impact assembly comprises a front impact beam assembly, a crash box, a front side rail, and a front tower;

5. The vehicle body structure according to claim 4, wherein the front side member includes a front side member front section, a front side member middle section, and a front side member rear section that are connected in this order;

6. The vehicle body structure according to claim 5, wherein a plurality of beads arranged in a vehicle body transverse direction are provided on the front side member rear section.

7. The vehicle body structure of claim 4, wherein the front impact assembly further comprises an upper short beam, one end of the upper short beam being connected to the front side rail, and the other end of the upper short beam being connected to the a-pillar assembly at a location proximate to the front side rail.

8. The vehicle body structure according to claim 7, wherein the upper short beam includes a first connecting arm arranged in a vehicle body transverse direction, a second connecting arm extending in a first direction from one end of the first connecting arm, and a third connecting arm extending in a second direction from one end of the second connecting arm;

9. The vehicle body structure of claim 1, wherein the a-pillar assembly comprises an a-pillar inner panel, an a-pillar outer panel, and an a-pillar square tube;

10. The vehicle body structure of claim 1, wherein the B-pillar assembly includes a B-pillar inner panel and a B-pillar outer panel;

11. The vehicle body structure of claim 10, wherein the B-pillar outer panel includes a first pillar section, a second pillar section, a third pillar section, and a fourth pillar section that are connected in series in a vehicle body vertical direction;

one end of the first column section is connected with the threshold beam;

12. The vehicle body structure of claim 1, wherein the rear impact assembly includes a rear side rail, a rear impact rail, a rear side rail closure plate, a first connection beam, a rear tower mount, and a second connection beam;

13. The vehicle body structure of claim 12, wherein the rear side rail includes a rear side rail front section, a rear side rail middle section, and a rear side rail rear section connected in sequence;

14. The vehicle body structure of claim 13, wherein the rear impact beam is provided with a connection frame thereon, the rear side member further comprising a first support beam, a second support beam, and a third support beam;

15. An automobile comprising the body structure of any one of claims 1-14.