Step-by-step type energy absorption device during collision of automobiles

Abstract

A multi-stage collision energy sucking mechanism for car is composed of an energy sucking beam, and one or more reinforcing plates in said sucking beam for sucking the collision energy one by one.

Description

technical field [0001] The invention mainly relates to the structural design field of automobile collision safety, in particular to a step-by-step energy-absorbing device for automobile collision. Background technique [0002] In the prior art, in order to ensure the safety of the drivers and passengers when the car collides, generally an energy absorbing device is provided at the front of the car. The conventional energy absorbing device is mainly a square longitudinal beam. However, the collision acceleration curve of this square energy-absorbing beam structure usually produces a peak at the beginning of the collision process, and then, due to the structural yield, the collision acceleration curve will produce a trough again, and then it will be at a lower level, which is different from the There is a large gap in the ideal uniform collision energy absorption process, and it is difficult to achieve a good energy absorption effect within the shortest possible energy absorpt...

AI Technical Summary

Problems solved by technology

Depend on Figure 4 It can be seen that the body structure corresponding to the acceleration curve cannot achieve a good impact energy absorption and occupant protection effect.

Especially when the body shape requires a small collision energy absorption length, increasing the energy absorption effect only by increasing the wall thickness of the square energy-absorbing beam will lead to a larger collision acceleration peak and early buckling of the rear body structure, which is not conducive to energy absorption during the collision process and occupant protection

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