A car door sill with micro-cell filling layer

Abstract

The invention belongs to the field of automobile parts, and particularly relates to an automobile threshold with a special micro-cell filling layer. The automobile threshold comprises automobile threshold plates arranged on the inner side and the outer side, and the micro-cell filling layer arranged between the automobile threshold plates on the inner side and the outer side; the micro-cell filling layer is of a stereo structure formed by sequentially arraying and combining a plurality of unit cells in the X direction, Y direction and Z direction; each unit cell is constituted by combining four energy-absorbing pieces, the every two adjacent energy-absorbing pieces are arranged in a mutually perpendicular mode, the top ends and the bottoms of the every four energy-absorbing pieces are connected through a cubic connecting block to be a whole; and each energy-absorbing piece comprises a first transverse energy-absorbing part, a second transverse energy-absorbing part, a first vertical energy-absorbing part and a second vertical energy-absorbing part, wherein the second transverse energy-absorbing part and the first transverse energy-absorbing part are symmetrically arranged, and thesecond vertical energy-absorbing part and the first vertical energy-absorbing part are symmetrically arranged. The automobile threshold with the special micro-cell filling layer has the advantages that the structure is simple, the energy absorbing effect is good, the automobile threshold is suitable for many vehicle models, thus the side colliding peak value is decreased, and the life safety of adriver can be better protected.

Description

technical field [0001] The invention belongs to the field of automobile parts, and in particular relates to an automobile threshold with a microcellular filling layer. Background technique [0002] With the continuous increase of car ownership, the frequency of car accidents is gradually increasing, and the active and passive safety of cars is becoming more and more important. In the survey and statistics of collision accidents in the United States, the probability of side collisions accounts for 7%, and in the statistics of collision accidents in Japan, the probability of side collisions accounts for 12.7%. Because the side collision is relatively close to the driver, it poses a great threat to the driver's life safety, so it is particularly important to strengthen the safety of side collisions. [0003] The car door sill is the main energy-absorbing component of side collision, and it is also a hot spot for many scholars to study side collision. At present, the general m...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a car door sill with a microcellular filling layer to solve the technical problems of poor energy absorption effect, heavy weight and high production cost in the side collision of the existing car door sill

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