Automobile bumper beam

摘要

An automobile bumper beam to be disposed in a vehicle width direction includes: a small sectional area portion at a center in the vehicle width direction; paired sectional area changing portions continuous to outsides in the vehicle width direction of the small sectional area portion; and paired large sectional area portions continuous to outsides in the vehicle width direction of the sectional area changing portions. The small sectional area portion projects most outward in a front-rear direction at paired impact load input portions. Thus, impact load in minor collision is inputted as two-point concentrated load to the paired input portions of a bumper beam body, reducing a peak value of bending moment acting on the body, and the sectional area changing portions and large sectional area portions bear the moment, thereby enhancing strength of the body, reducing its thickness and weight, and achieving an excellent collision energy absorbing effect.

主权项

1. An automobile bumper beam which is made of fiber-reinforced resin and configured to be disposed in a vehicle width direction, the bumper beam comprising:
a small sectional area portion located at a center in the vehicle width direction; a pair of sectional area changing portions continuous to outer sides in the vehicle width direction of the small sectional area portion and each having a sectional area gradually increasing from the small sectional area portion; and a pair of large sectional area portions continuous to outer sides in the vehicle width direction of the pair of sectional area changing portions and each having a larger sectional area than that of the small sectional area portion, wherein the small sectional area portion projects most outward in a front-rear direction at a pair of impact load input portions provided on opposite end sides in the vehicle width direction of the small sectional area portion.