Vehicle body structure capable of resisting small offset impact and casting method of front connecting piece

Abstract

The invention provides a vehicle body structure capable of resisting small offset collision, which comprises a front anti-collision cross beam, front longitudinal beams symmetrically arranged along the front anti-collision cross beam and an upper force transmission path structure positioned above the front anti-collision cross beam, and an energy absorption box is arranged between the front longitudinal beams and the front anti-collision cross beam; the upper force transmission path structure comprises an upper cross beam and vehicle body side face structures symmetrically arranged along the upper cross beam, each vehicle body side face structure comprises a vertical connecting beam, an upper longitudinal beam, a front connecting piece and an integrated side wall, one end of each vertical connecting beam is connected with the corresponding front longitudinal beam, and the other end of each vertical connecting beam is connected with the corresponding upper longitudinal beam, the other end is connected with the front connecting piece, and the front longitudinal beam and the integrated side wall are respectively connected with the front connecting piece. According to the vehicle body structure, a plurality of closed-loop paths are formed, collision force is effectively transmitted, and the safety of passengers is guaranteed. The invention further provides a casting method of the front connecting piece of the vehicle body structure capable of resisting small offset collision.

Description

technical field [0001] The invention relates to the field of automobile body structure design, in particular to a body structure resistant to small offset bumps and a casting method for front connecting parts [0002] technical background [0003] Small offset collision is a common type of accident. According to the vehicle accident data collected by CIDAS from 2011 to June 2013, the proportion of small offset collision accidents is 15%. In order to better simulate actual traffic accidents and protect personal safety, the Insurance Institute for Highway Safety IIHS has developed a frontal 25% offset collision test to detect the performance of vehicles against small offset collisions, that is, vehicles travel at 64.4km / h±1km / h The speed per hour, 25% ± 1% overlap rate hits the fixed rigid barrier head-on. In this mode, the front anti-collision beam, energy-absorbing box, and front longitudinal beam of most vehicles have no or little contact with the barrier during the collisi...

AI Technical Summary

Problems solved by technology

The reinforcement plate is subjected to the impact of collision and impact to collapse and absorb the collision energy, and the collision force is decomposed and guided through the guide surface on the reinforcement plate assembly. The purpose of this reinforcement structure is to resist the small offset collision of the vehicle, but the collision force The conduction path is single, and it is difficult to resist small offset collisions

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