Automotive crashworthiness energy absorptive part and method for manufacturing same

An automotive crashworthiness energy absorptive part to be provided at a front portion or a rear portion of an automotive body and configured to be axially crushed when crashworthiness load is input from a front side or a rear side of the automotive body to absorb crashworthiness energy, the automotive crashworthiness energy absorptive part comprising:

• a tubular member configured to be axially crushed in a longitudinal direction of the tubular member to absorb crashworthiness energy by generating buckling deformation in a bellows shape, the tubular member having a top portion and side wall portions continuous to the top portion;
• and
• a resin configured to coat or patch at least inner surfaces of the top portion and the side wall portions of the tubular member, wherein
• the coated or patched resin has a thickness of 8 mm or less after being heated and forms at least a part of a peripheral wall portion in a closed cross-sectional space, and adheres to the inner surfaces with an adhesive strength of 10 MPa or more,
• the resin being an intervening object such that a bending radius of a convex bending portion of the buckling deformation in the bellows shape is made larger than a fracture limit for bending radius inherent of a metal sheet of the tubular member, and thereby fractures are prevented from occurring in the cove bending portion.