Front body framework structure of automobile

Abstract

The invention discloses a front body framework structure of an automobile. The front body framework structure of the automobile comprises an automobile body A post, a front protective cross beam, a front engine room framework assembly and a front floor framework assembly, wherein the front engine room framework assembly comprises a front engine room longitudinal beam, and a plurality of longitudinal beams and cross beams, which are connected with the front engine room longitudinal beam and are used for dispersing and transferring collision energy; and the front floor framework assembly comprises a front floor longitudinal beam, a lower door sill, and a plurality of longitudinal beams and cross beams, which are connected with the front floor longitudinal beam and the lower door sill and are used for dispersing and transferring collision energy. Through the technical scheme, a plurality of structural beams are welded to form a closed annular body framework structure; the plurality of longitudinal beams and cross beams are used for absorbing and transferring the collision impact load, so that the front part is deformed and absorbs energy sufficiently; the number of impact energy transfer passages is large; the energy is reasonably dispersed; the energy is absorbed in time; the invasion amount of a front baffle plate is small; the deformation of the floor and a middle passage is small; the deformation of a cab is reduced; and thus, the damage to a passenger in the collision, and the maintenance cost of the automobile are reduced.

Description

technical field [0001] The invention relates to an automobile body frame, in particular to a front frame structure of an automobile body. Background technique [0002] With the popularization of automobiles, people pay more and more attention to the safety of automobiles, and the ever-increasing collision regulations and standards also put forward higher and higher requirements for automobile bodies. How to increase the energy absorbed by the car body during the collision, reduce the displacement and acceleration of the cab, and reduce the damage of the occupants has a great contribution to the performance of the vehicle in the collision. [0003] At present, the common structural form of the body cab is: the longitudinal body is mainly composed of the front beam, the front cabin longitudinal beam, the front floor longitudinal beam, the outer threshold and the body A-pillar to form the front skeleton structure of the body. Due to the small number of longitudinal beams beari...

AI Technical Summary

Problems solved by technology

Due to the small number of longitudinal beams bearing the impact load in this structure, and the front and rear longitudinal beams do not adopt a through connection structure, it is easy to cause insufficient impact energy transmission channels on the vehicle body during a frontal collision, and the energy dispersion is unreasonable. The deformation energy absorption is not sufficient, the front baffle has a large amount of intrusion, the floor and the middle channel are relatively deformed, and eventually cause greater damage to the occupants; and there is no difference in the absorption and dispersion of the energy value during the collision process and the key areas. Features to arrange the body frame structure, it is easy to cause unnecessary damage to the body frame and occupant injury

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