Energy absorber and method for manufacturing the same

A energy absorber comprising;

• At least two elongated bodies having a first end and a second end, the elongated bodies being formed of fiber-reinforced resin which includes:
• compression direction fiber layers formed of bundles of filament fibers extending parallel to or inclined relative to a longitudinal axis of the body;
• and
• intersecting fiber layers formed of bundles of filament fibers extending perpendicular to the longitudinal axis of the body;
• wherein the compression direction fiber layers and intersecting fiber layers are alternatively stacked to form a laminated structure bound together by binding threads which are looped through the entire thickness of the laminated structure and are secured against one side of the laminated structure by retaining threads;
• wherein the elongated bodies are bound by thickness threads to form a plate shape structure;
• and
• wherein the plate shape structure is impregnated in a resin.

An energy absorber comprising:

• an elongated body having a first end and a second end, the elongated body being formed of fiber-reinforced resin which includes:
• compression direction fiber layers formed of bundles of filament fibers extending parallel to or inclined relative to a longitudinal axis of the body;
• and
• intersecting fiber layers formed of bundles of filament fibers extending perpendicular to the longitudinal axis of the body;
• wherein the compression direction fiber layers and intersecting fiber layers are alternatively stacked to form a laminated structure bound together by binding threads which are looped through the entire thickness of the laminated structure and are secured against one side of the laminated structure by retaining threads;
• wherein a cross-section of the elongated body continually changes from a square at the first end to a hexagon at the second end;
• and
• wherein the laminated structure is impregnated in a resin.