Side impact energy-absorbing high-rigidity all-aluminum light-weight door sill structure for automobile

Abstract

The invention discloses a side impact energy-absorbing high-rigidity all-aluminum light-weight door sill structure for an automobile. The side impact energy-absorbing high-rigidity all-aluminum light-weight door sill structure comprises a door sill framework and an I-shaped composite beam, wherein the inside of the door sill beam framework is coated with the I-shaped composite beam; foamed aluminum bar columns are separately arranged in an upper profiled groove and a lower profiled groove of the I-shaped composite beam; the door sill framework comprises an outer plate-shell assembly and an inner plate-shell assembly; the door sill framework is formed by folding the outer plate-shell assembly with the inner plate-shell assembly; the inside of the door sill framework is coated with the I-shaped composite beam by the door sill framework; the outer plate-shell assembly comprises a door sill reinforcing plate outer panel and a side wall outer plate; the outside of the door sill reinforcing plate outer panel is coated with the side wall outer plate; the side wall outer plate is provided with an energy-absorbing cavity; a plurality of cylindrical foamed aluminum energy-absorbing components are arranged in the axial direction of the door sill reinforcing plate outer panel at intervals; and the cylindrical foamed aluminum energy-absorbing components are arranged in the energy-absorbing cavity. According to the structure, under the same side impact conditions of the automobile, impact buffer energy absorption, a high-rigidity structure and light weight of an automobile body are simultaneously realized; and in addition, the door sill structure has good pavement noise absorbing capability and facilitates the improvement on driving comfortableness.

Description

technical field [0001] The invention relates to structural parts of automobile bodies, in particular to an energy-absorbing high-rigidity all-aluminum lightweight threshold beam structure for automobile side collisions. Background technique [0002] So far, China's automobile production and sales have reached and ranked first in the world. Although automobiles have brought great convenience to our transportation, due to its huge number of automobiles, it has brought great impact to China's traffic safety. pressure. According to relevant literature, since 2010, the number of traffic accident deaths caused by automobiles in my country has ranked first in the world over the years, and among all traffic collision accidents, side collisions accounted for 32% of the total number of accidents, surpassing frontal collisions. First, and among all accidents that cause death and serious injury, the fatality and injury rate of side collision also ranks first. Therefore, it can be seen ...

AI Technical Summary

Problems solved by technology

Although the first scheme can meet the safety performance requirements of automobile side collisions, it cannot meet the lightweight design requirements of automobiles because its material is usually steel and its weight is relatively large; the second scheme adds partial Although the reinforced structure improves the safety of local side collisions and ensures the strength and rigidity requirements, the addition of local reinforced structures also leads to an increase in the overall weight, overall deformation of the reinforced area and non-reinforced area during side collisions, and poor transmission of force. Even, it cannot meet the requirements of lightweight design and crash safety design at the same time

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