A car body-in-white with enhanced torsional stiffness

Abstract

The invention provides a torsional rigidity-strengthened vehicle body in white. The vehicle body in white comprises a back door D ring structure and a frame structure. The frame structure is of a closed loop structure and is arranged at the back of the vehicle body in white, the back door D ring structure is arranged at the tail of the vehicle body in white, and the back door D ring structure and the frame structure are connected together. According to the invention, the closed loop structure formed by connecting back baseplate beams, side wall connection plates and a back roof beam is arranged at the back of the existing vehicle body in white, thus the rigidity of the back of the body is enhanced through the dual-closed loop structure at the back of the body, the torsional rigidity of the vehicle body in white is greatly strengthened, so that the problems of severe deformation at the local part of the body and the noise of abnormal sound and the like in the running process of the vehicle are avoided, the problems of operation stability and steering behaviors due to the cracking of sheet metal parts at crucial joints of a body skeleton and in the vehicle turning running process are avoided, and the torsional rigidity-strengthened vehicle body in white has wide popularization and application prospects.

Description

technical field [0001] The invention relates to the field of automobile body structures, in particular to an automobile body in white, in particular to an automobile body in white with enhanced torsional rigidity. Background technique [0002] With the rapid development of the automobile industry, automobiles (mainly referring to passenger cars) have become very common products in our lives. The body frame structure is one of the key assemblies of the vehicle, and the body frame is mainly a load-bearing body structure, which is the carrier of passengers and luggage. The design of the body should not only ensure its appearance design, but also its performance requirements. The torsional stiffness of the body-in-white is an important part of the performance requirements of the vehicle. From a macro perspective, the torsional stiffness of the body-in-white is related to collision, durability, NVH, and R&H performance; from a microscopic point of view, the torsional stiffness o...

AI Technical Summary

Problems solved by technology

These improvement methods also have their shortcomings: on the one hand, the weight of the whole vehicle is increased, which is not conducive to the lightweight of the vehicle body; on the other hand, it will also increase the manufacturing cost of the bicycle.

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