US 11,052,848 B2
Energy absorbing device
Jian Lu, Kowloon (HK); Yuan Gao, North Point (HK); Tao Tang, Kowloon (HK); and Lu Yao, Kowloon (HK)
Assigned to City University of Hong Kong, Kowloon (HK)
Filed by City University of Hong Kong, Kowloon (HK)
Filed on Apr. 19, 2017, as Appl. No. 15/490,977.
Prior Publication US 2018/0304841 A1, Oct. 25, 2018
Int. Cl. B60R 19/34 (2006.01)
CPC B60R 19/34 (2013.01) 20 Claims
OG exemplary drawing
 
1. An energy absorbing device comprising a plurality of deformable elongate members shaped to absorb impact energy; and a container formed to control the absorption of impact energy by the plurality of deformable elongate members, each of the plurality of deformable elongate members having a length along an axial direction and a thickness, and the container having a length and a thickness, wherein at least one of the deformable elongate members has a different length than a length of another one of the deformable elongate members, wherein the deformable elongate members are packed parallel with each other, and wherein radial deformation of the deformable elongate members causes interaction with adjacent deformable elongate members which acts as a constraint to further deformation of the deformable elongate members in the direction transverse to the axial direction of the deformable elongate members, wherein the plurality of deformable elongate members are of variable thicknesses, and wherein the plurality of deformable elongate members are shaped to form a gradient of 15 degrees with respect to a maximum length of the container.