CN-224225150-U - Front longitudinal beam assembly and vehicle

CN224225150UCN 224225150 UCN224225150 UCN 224225150UCN-224225150-U

Abstract

The application provides a front longitudinal beam assembly and a vehicle. The front longitudinal beam assembly comprises a first plate area and a second plate area, wherein the material strength of the first plate area is smaller than that of the second plate area, the first plate area and the second plate area are distributed along the length direction of the vehicle body, and the first plate area is close to one side of the vehicle head. The first plate area is internally provided with a first cavity, the second plate area is internally provided with at least two second cavities, and the height direction of each second cavity body is distributed. The first plate area can be used as a collision energy absorption crushing area, when a vehicle body collides, the collision energy absorption crushing area can mainly bear collision deformation energy absorption, part of collision energy is absorbed firstly, the rest of collision energy is transferred to the second plate area with higher strength, the absorption efficiency of the energy after the collision is greatly improved, and higher structural safety is realized.

Inventors

CAO YANGJIU
XU CHAO
SONG YADONG
LI TIANQI
WANG JIE

Assignees

浙江极氪智能科技有限公司
浙江吉利控股集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (10)

1. The front longitudinal beam assembly is characterized by comprising a first plate area and a second plate area, wherein the material strength of the first plate area is smaller than that of the second plate area; The first plate area is internally provided with a first cavity, the second plate area is internally provided with at least two second cavities, and the height direction of each second cavity body is distributed.
2. The front side rail assembly according to claim 1, comprising a front side rail inner panel and a front side rail outer panel connected to the front side rail inner panel, the front side rail inner panel and the front side rail outer panel being arranged in a width direction of a vehicle body; The front longitudinal beam inner plate comprises a first plate inner plate and a second plate inner plate which are connected in a splice welding mode, wherein the material strength of the first plate inner plate is smaller than that of the second plate inner plate; The front longitudinal beam outer plate comprises a first plate outer plate and a second plate outer plate which are connected in a tailor-welded mode, wherein the material strength of the first plate outer plate is smaller than that of the second plate outer plate; The first plate inner plate and the first plate outer plate are connected to form the first plate area, the first plate inner plate and the first plate outer plate are enclosed to form the first cavity, the second plate inner plate and the second plate outer plate are connected to form the second plate area, and the second plate inner plate and the second plate outer plate are enclosed to form each second cavity.
3. The front rail assembly of claim 2, wherein a first split line is provided between the first and second inner panel, and a second split line is provided between the first and second outer panel, the second split line corresponding in location to the first split line.
4. The front side rail assembly according to claim 2, wherein the first panel inner panel includes a first main body portion and two first bending portions, the two first bending portions are respectively connected to two sides of the first main body portion in a vehicle body height direction in a bending manner, the first panel outer panel is connected to the two first bending portions, and the first main body portion, the two first bending portions, and the first panel outer panel are enclosed to form the first cavity.
5. The front side rail assembly according to claim 4, wherein the first panel inner panel further includes two first burring portions, one of the first burring portions is respectively bent and connected to one end of the two first burring portions remote from the first main body portion, and the first panel outer panel is connected to the two first burring portions.
6. The front side rail assembly according to claim 2, wherein the second panel inner panel includes at least two second main body portions and a plurality of second bending portions, each of the second main body portions is arranged in a height direction of the vehicle body, each of the second main body portions is respectively bent and connected with one of the second bending portions along both sides of the height direction, the second panel outer panel is connected with each of the second bending portions, and the second main body portions, the two second bending portions connected with the second main body portions, and the second panel outer panel are enclosed to form the second cavity.
7. The front side rail assembly according to claim 6, wherein the second panel inner panel further includes a plurality of second burring portions, one of the second burring portions is respectively bent and connected to one end of the second burring portions remote from the second main body portion, and the second panel outer panel is connected to each of the second burring portions.
8. The front side rail assembly of claim 1, wherein the volume of the second cavity increases gradually from a front end side to a rear end side along the length of the vehicle body.
9. A vehicle comprising a front side rail assembly according to any one of claims 1 to 8.
10. The vehicle of claim 9, further comprising a front impact beam assembly, an A-pillar assembly, and a rocker beam assembly, the rocker beam assembly being connected to the A-pillar assembly, the first cavity of the first sheet material region being connected to the front impact beam assembly, one of the second cavities of the second sheet material region being connected to the A-pillar assembly, the other of the second cavities of the second sheet material region being connected to the rocker beam assembly, or The battery pack support assembly is connected with the A column assembly, the battery pack support assembly is connected with the threshold beam assembly, the first cavity of the first plate area is connected with the front anti-collision beam assembly, one of the second cavities of the second plate area is connected with the A column assembly, and the other second cavity of the second plate area is connected with the threshold beam assembly.

Description

Front longitudinal beam assembly and vehicle Technical Field The application relates to the technical field of vehicle body structures, in particular to a front longitudinal beam assembly and a vehicle. Background At present, the automobile collision safety is increasingly and widely concerned, in the collision accident, the front collision accident happens frequently, the automobile body structure is an important guarantee of the collision safety, and the good force transmission structure can realize light weight on the basis of guaranteeing the safety and is also a practical embodiment of enterprises. It is a fundamental requirement to ensure as much as possible the structural integrity of the cabin of the vehicle body in the event of a crash. The front longitudinal beam assembly structure of the vehicle in the related art is low in installation strength and unstable, when the vehicle collides or is impacted by other external forces, the vehicle body easily shakes, and when serious, the vehicle body can be extruded to electric elements inside the vehicle body, so that personal safety is threatened. Disclosure of utility model The application provides a front longitudinal beam assembly and a vehicle, which are used for solving the problems in the prior art. In a first aspect, the embodiment of the application provides a front longitudinal beam assembly, which comprises a first plate area and a second plate area, wherein the material strength of the first plate area is smaller than that of the second plate area; The first plate area is internally provided with a first cavity, the second plate area is internally provided with at least two second cavities, and the height direction of each second cavity body is distributed. The front longitudinal beam comprises a front longitudinal beam inner plate and a front longitudinal beam outer plate connected with the front longitudinal beam inner plate, wherein the front longitudinal beam inner plate and the front longitudinal beam outer plate are arranged along the width direction of a vehicle body; The front longitudinal beam inner plate comprises a first plate inner plate and a second plate inner plate which are connected in a splice welding mode, wherein the material strength of the first plate inner plate is smaller than that of the second plate inner plate; The front longitudinal beam outer plate comprises a first plate outer plate and a second plate outer plate which are connected in a tailor-welded mode, wherein the material strength of the first plate outer plate is smaller than that of the second plate outer plate; The first plate inner plate and the first plate outer plate are connected to form the first plate area, the first plate inner plate and the first plate outer plate are enclosed to form the first cavity, the second plate inner plate and the second plate outer plate are connected to form the second plate area, and the second plate inner plate and the second plate outer plate are enclosed to form each second cavity. Optionally, a first parting line is formed between the first plate inner plate and the second plate inner plate, a second parting line is formed between the first plate outer plate and the second plate outer plate, and the second parting line corresponds to the first parting line in position. Optionally, the first plate inner plate comprises a first main body part and two first bending parts, the two first bending parts are respectively connected with two sides of the first main body part along the height direction of the vehicle body in a bending way, the first plate outer plate is connected with the two first bending parts, and the first main body part, the two first bending parts and the first plate outer plate are enclosed to form the first cavity. Optionally, the first panel inner panel further includes two first flanging portions, two the first bending portions are kept away from the one end of the first main body portion is respectively buckled and connected with one first flanging portion, and the first panel outer panel is connected with two first flanging portions. Optionally, the second plate inner plate comprises at least two second main body parts and a plurality of second bending parts, each second main body part is arranged along the height direction of the vehicle body, two sides of each second main body part along the height direction are respectively bent and connected with one second bending part, the second plate outer plate is connected with each second bending part, and the second main body part, the two second bending parts connected with the second main body part and the second plate outer plate are enclosed to form the second cavity. Optionally, the second panel inner panel further includes a plurality of second flanging portions, one second flanging portion is respectively connected to one end of the second bending portion, which is far away from the second main body portion, in a bending manner, and the second pa