| 摘要 |
An elongated, tubular, steel, vehicle door impact beam, each end of which has a convex curvilinear outer surface to form opposite curvilinear, outwardly facing connector surfaces, a steel plate at each end having at least one portion which is generally flat, and having a pair of opposite faces, a pair of elongated beads upstanding from one of these faces of the steel plate, each bead having a convex curvilinear cross section, the beads being spaced from and parallel to each other, defining elongated, adjacent, mutually facing, curvilinear surfaces engaging the opposite curvilinear, outwardly facing surfaces of the tubular impact beam, and each curvilinear bead surface being welded to one of the curvilinear beam surfaces of one of the beam ends. The beads are formed from the steel plate, each having a radius of curvature smaller than the radius of curvature of the ends of the beam. The mutually facing curvilinear bead surfaces are spaced apart an amount less than the diameter of the beam end.
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