Patent ID: 9381881
Filing Date: 2016-07-05
CPC Classification: B60R,B62D,F16F

Claim Text:
1. A hollow columnar shock absorbing member comprising: an axis; a plurality of rectangular walls extending parallel to the axis; and a polygonal cross-section perpendicular to the axis, the shock absorbing member extending in a direction of the axis and being configured to absorb externally-applied impact energy while buckling in the direction of the axis, wherein the shock absorbing member has a plurality of beads formed on at least two walls among the plurality of walls, the plurality of beads providing the origin of buckling, the plurality of beads are positioned so as to be deviated towards one edge of each wall on which the plurality of beads are formed and so that a ridge of a corner does not exist in the bead and a distance between the center of the bead and the corner is a quarter of a width of the wall or less, the edges of the at least two walls extending parallel to the axis and being positioned on the same side with respect to a circumferential direction about the axis of the shock absorbing member, and the beads are separated in the axis direction.