Patent ID: 8430437
Filing Date: 2013-04-30
Classification: B60R

Abstract:
1. A crash can made of aluminum-alloy casting which is provided between a side frame extending in a vehicle longitudinal direction at a side portion of a vehicle and an end portion of a bumper reinforcement extending in a vehicle width direction, comprising: a hollow tube portion extending in the vehicle longitudinal direction and having a cross-shaped section, the tub portion including eight outwardly-projecting corner portions, four inwardly-projecting corner portions, eight flat portions which are positioned between the outwardly-projecting corner portions and the inwardly-projecting corner portions, and four flat portions which are positioned between the outwardly-projecting corner portions, wherein a groove extending in the vehicle longitudinal direction is formed on an outer face or an inner face of each of said eight outwardly-projecting corner portions and said four inwardly-projecting corner portions of the tube portion are formed such that a thickness of a tube wall of said each of the eight outwardly-projecting corner portions and the four inwardly-projecting corner portions of the tube portion is partially thin.