Side wall vertical pillar structure of variable-cross-section passenger car

Abstract

The invention relates to the technical field of passenger car security protection, in particular to a side wall vertical pillar structure which is capable of remarkably improving rollover security performance of a variable-cross-section passenger car. The side wall vertical pillar structure of the variable-cross-section passenger car is formed by an outside plate structure (6) and a U-shaped inner plate structure (7) in a welding mode, the width of the outside plate structure (6) from a top longitudinal beam (2) to a window waist beam (3) is the same, and from the window waist beam (3) to a lower waist beam (5), the width increases gradually from top to down. The cross-section size of the U-shaped inner plate structure (7) increases gradually along the vertical pillar length direction from top to bottom, the width of each cross-section of the U-shaped inner plate structure is (7) smaller than the cross-section width of the outside plate structure (6) at the same cross-section portion, a welding lap joint area with equal width is arranged on a joint of the U-shaped inner plate structure (7) and the outside plate structure (6). The side wall vertical pillar structure of the variable-cross-section passenger car is capable of guaranteeing that in the rollover process, the collision moment of the side wall vertical pillar of the passenger car body is matched with the pillar cross-section size, the degeneration of the side wall vertical pillar is enabled to become even, and the rollover security performance of the passenger car is improved. .

Description

technical field [0001] The invention relates to the technical field of passenger car safety protection, in particular to a variable cross-section stamping and welding passenger car side wall column structure which can significantly improve the rollover safety performance of the passenger car. technical background [0002] With the rapid development of public transportation, passenger cars have become the most mainstream public transportation means in today's society, which has also caused various passenger car traffic accidents, among which rollover is one of the most serious traffic accidents of passenger cars, which is likely to cause mass death Therefore, how to minimize the damage to the driver and passengers during the rollover process of the bus and improve the rollover safety performance of the bus has become an urgent problem to be solved. [0003] A large number of documents and simulation results show that in the process of passenger car rollover collision, the clo...

AI Technical Summary

Problems solved by technology

However, the side column structures of existing passenger cars all use rectangular steel pipes of equal cross-sectional size, resulting in uneven deformation of the side column columns during a rollover collision, and a large amount of intrusion into the side wall structure, which affects the rollover safety performance of the vehicle.

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