Patent ID: 9463761
Filing Date: 2016-10-11
CPC Classification: B60J,B60R

Claim Text:
1. A resin impact energy absorber for vehicle and having a single wall solid plate structure, the resin impact energy absorber comprising: a rectangular planar portion including one plate surface and another plate surface, at least one of the one plate surface and the another plate surface including an impact load receiving surface; a plurality of first protrusions formed by forming a plurality of long grooves parallel to one another at a predetermined interval in the planar portion; and a second protrusion formed by forming a long shallow groove that extends in a direction intersecting with the plurality of first protrusions in the planar portion, wherein the plurality of first protrusions each extends parallel to one pair of opposing sides of the planar portion and the second protrusion extends in a straight line parallel to another pair of opposing sides of the planar portion so as to couple the one pair of opposing sides of the planar portion with one another, the plurality of first protrusions each includes a pair of inclined vertical walls and a top wall, the pair of inclined vertical walls projecting from the planar portion and facing one another, and the top wall coupling the pair of inclined vertical walls, the pair of inclined vertical walls is inclined at a predetermined inclination angle such that the pair of inclined vertical walls comes close to one another as approaching from the planar portion to the top wall, the second protrusion is provided to couple the inclined vertical walls of the adjacent first protrusions with one another, the second protrusion has a protrusion height lower than a protrusion height of the plurality of first protrusions and is coupled with the first protrusions at root portions, the second protrusion has a top wall length shorter than a top wall length of the plurality of first protrusions, prevents the inclined vertical walls from falling down when an impact load is obliquely applied, and then ensuring a deformation stroke that absorbs impact energy, and the first protrusion has the top wall with width of 8 to 25 mm and has the protrusion with height of 10 to 90 mm.