Synchronous energy absorbing device before and after a car collision

Abstract

The invention relates to a car crash front-rear synchronous energy absorption device which comprises a front bumper, a rear bumper and two push rods. The structure of the rear bumper is the same as the structure of the front bumper, the rear bumper and the front bumper are symmetrically arranged, and the two push rods are used for transmitting collision force from the front bumper and the rear bumper. The front bumper and the rear bumper respectively comprise a front buffer beam, a rear cross beam and two front-rear beam connecting pieces. The two ends of each front buffer beam and the two ends of the corresponding rear cross beam are welded together through the front-rear beam connecting pieces, two energy absorption boxes which are fixedly arranged on each rear cross beam and two energy absorption box connecting frames used for being connected with the energy absorption boxes are arranged in the space between each front buffer beam and the corresponding rear cross beam, and the energy absorption box connecting frames and the front buffer beams are welded together. The two push rods are arranged between the front bumper and the rear bumper in parallel, the two ends of each push rod are arranged in the rear cross beam of the front bumper and the rear cross beam of the rear bumper in a penetrating mode, and the two ends of each push rod are connected with the energy absorption boxes of the front bumper and the energy absorption boxes of the rear bumper respectively. The car crash front-rear synchronous energy absorption device is simple in structure, when head-on collision and rear-end collision happen, a car can absorb more energy, and thus the safety of passengers in the car can be guaranteed.

Description

technical field [0001] The invention relates to automobile safety technology, in particular to a synchronous energy-absorbing device before and after automobile collision. Background technique [0002] With the continuous development of automobile technology and the continuous increase of automobile ownership, people's requirements for automobile safety performance are increasing day by day. In a car accident, the pedestrian's lower limbs will collide with the bumper, resulting in shear injury to the leg, which is not fatal but seriously affects the quality of life; in a car accident, the bumper is the first contact with external objects The components bear part of the impact energy, especially the buffering effect of the shock wave peak. Therefore, improving the impact energy absorption of automobile bumpers will play an important role in improving automobile collision safety and pedestrian protection. The front and rear energy-absorbing devices of traditional automobiles...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a synchronous energy-absorbing device before and after a car collision, aiming to solve the problem that the independent front and rear energy-absorbing devices of traditional automobiles absorb energy separately, the absorbed energy is small, and the synchronous energy-absorbing of the front and rear energy-absorbing devices cannot be realized

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