Carriage structure of car body

Abstract

To effectively increase the strength of the framework of a large size vehicle, a reinforcing member (12) with a substantially closed, triangular cross-section is arranged in a polygonal hollow cross-section (7) at the corner (3) of a front post (1) and top rail (2) for connecting the vehicle. The edges (13, 15) of the reinforcing member (12) transect the hollow cross-section (7) at the vicinity of the crest lines (8, 16) of the hollow cross-section (7) respectively, and then extend to the vicinity of the crest line (14) at the top front side of the vehicle.

Description

technical field [0001] The invention relates to the frame structure of the vehicle body, especially the structure of the connection part between the front support beam and the upper side beam. Background technique [0002] Such as figure 1 As shown in FIG. 7 , in the conventional vehicle body, the front frame and the roof side rail are connected at the corner 3 . The cross-section of the corner portion 3 is inclined with respect to the up-down and front-rear directions, and joined with the superimposed outer plate 4, slanted frame 5, and inner plate 6 to form a substantially polygonal hollow cross-section 7. In this conventional vehicle body frame structure, when the front of the vehicle collides and a large impact force is applied from the front of the vehicle, as shown by the dashed-two dotted line in FIG. The phenomenon that the part 8 is bent inward and the polygonal shape is broken. Therefore, the body frame may be bent toward the rear of the vehicle at the corner po...

AI Technical Summary

Problems solved by technology

However, no matter what kind of reinforcing member is provided in the straight portion of the corbel, it cannot improve the strength of the corner connecting the corbel and roof rail.

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