The invention discloses an efficient
energy absorption device capable of achieving graded collapse. The efficient
energy absorption device comprises a front shell, a rear shell, a
gasket, a filler andan elastic piece. The front shell comprises an inner wall, an outer wall and a connecting wall, the connecting wall is formed through forward expansion and extension, being of a
horn structure, of the front end of the inner wall, the outer wall covers the connecting wall and the front end of the inner wall, the front end of the outer wall is connected with the front end of the connecting wall, and an annular groove is defined by the outer wall, the connecting wall and the inner wall; the
gasket is arranged in the rear shell, so that the internal space of the rear shell is divided into a frontpart and a rear part by the
gasket, the filler is arranged in the space of the rear part of the rear shell, the filler is of a hollow structure, and the elastic piece is located in the middle of thefiller; and the inner wall is inserted into the space of the front part of the rear shell, the gasket is pressed by the inner wall and the elastic piece from the two sides correspondingly, and the
diameter of the rear shell is between the
maximum diameter and the minimum
diameter of the connecting wall. The efficient
energy absorption device has the advantages that the energy absorption efficiencyis high, the
impact acceleration can be decreased, and the structure is simple.