D-column structure for automobile and D-column structure manufacturing method

Abstract

The invention discloses a D-column structure for an automobile and a D-column structure manufacturing method, and belongs to the field of automobiles. The D-column structure for the automobile comprises a side wall assembly, a lower body assembly, a top cover outer plate, a rear roof beam reinforcement plate and a rear roof beam inner plate. The upper end of the side wall assembly, the top cover outer plate, the rear roof beam reinforcement plate and the rear roof beam inner plate are fixedly connected, the lower end of the side wall assembly is fixedly connected with the lower body assembly, the side wall assembly comprises a side wall outer plate assembly and a side wall inner plate assembly, and the side wall inner plate assembly comprises a D-column reinforcement plate assembly and a rear inner plate assembly, wherein the rear inner plate assembly is provided with a partition piece which is used for enhancing bearing capacity of a body. According to the invention, in the structure, partitions are arranged, so that the rigidity mode is effectively enhanced; a D-column reinforcement plate extends to a rear wall connection plate, so that an effective force transfer path is formed; the welding position between the D-column reinforcement plate and a top cover rear roof beam upper connection plate avoids skeleton welding joints, so that the technology difficulty is lowered and the work efficiency is improved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a D-pillar structure for automobiles and a method for manufacturing the same. Background technique [0002] The D-pillar structure is the key to the body frame, and its structure directly affects the stiffness and mode of the body frame. If the stiffness of the body frame is insufficient, it is easy to cause local deformation of the body. [0003] In order to effectively improve the stiffness and modulus of the body frame, the D-pillar structure usually contains more parts, such as the roof, the rear beam outer panel, the rear beam inner panel, the D-pillar upper reinforcement panel, and the rear side wall outer panel , D-pillar upper outer panel and rear side wall outer panel. However, when the body is subjected to external forces, large deformations and even cracks will occur in places where the stress is relatively concentrated. [0004] In the process of realizing the present inv...

AI Technical Summary

Problems solved by technology

[0005] (1) Difficult stamping and forming of parts with D-pillar structure, low material utilization rate;

[0006] (2) It is difficult to realize the welding spot of the body frame;

[0007] (3) When the local strength stress of the car body is concentrated, it is easy to cause cracking;

[0008] (4) The body stiffness mode is low

Images