A kind of anti-bending structure of body-in-white and its arrangement method

Abstract

The invention provides a body-in-white anti-bending structure and its arrangement method, wherein the lower end of the lower vertical plate of the A-pillar is overlapped with the threshold beam, and the upper end is overlapped with the outer panel of the A-pillar; the outer panel of the A-pillar is overlapped with the upper beam of the B-pillar; The upper end of the column outer plate is overlapped with the B-pillar upper crossbeam, and the lower end is overlapped with the threshold beam; 2 to 3 layers of spot welding are connected at the overlap to form a closed structure; the bending section of the threshold beam and the bending resistance of the A-pillar vertical plate The section, the flexural section of the outer panel of the A-pillar and the flexural section of the upper beam of the B-pillar are all closed rings. The anti-bending cross-section of the present invention forms a closed ring, which is composed of three or four sheet metal parts, which improves the anti-bending performance; the extension section of the upper and lower ends of the outer panel of the B-pillar enhances the overlapping efficiency with the upper cross beam of the B-pillar and the sill beam , improve the bending performance. The horizontal and vertical staggered closed structure has the effect of strengthening the moment of inertia and improving the bending resistance.

Description

technical field [0001] The invention relates to the technical field of automobile body structures, in particular to a body-in-white anti-bending structure and its arrangement. Background technique [0002] The key component on the force transmission path of the automobile body is the main structure of the vehicle body, which is responsible for the force bearing and energy absorption during the vehicle collision process, and is the main determinant of whether the collision vehicle can obtain a high-star safety evaluation. The rationality, utility, and process realization of the design are the main factors affecting the collision result. The structural design on the force transmission path is not accomplished overnight, and requires repeated attempts, improvements, optimizations, and verifications to achieve the best design effect. [0003] In the traditional car body-in-white structure, the angle between the outer panel of the B-pillar and the height direction of the vehicle...

AI Technical Summary

Problems solved by technology

The angle of the outer panel of the B-pillar of the original structure and the overlapping effect of the outer panel and the connecting parts did not form a good bending performance

At the same time, the layout of the transverse and longitudinal beams of the body-in-white does not form a closed structure, and the bending resistance is poor

The traditional body-in-white water tank bracket assembly is heavy in weight, and the upper and lower beams are thicker. Although it has good load-bearing performance, the mass of the excitation end of the body-in-white is heavy, which will arouse the overall bending mode, and the bending resistance is also weak.

The connection structure between the longitudinal beam of the water tank and the front bumper and the front longitudinal beam is weak, and its installation structure is simple, and its bearing capacity and bending resistance are poor

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