Bumper back beam for vehicle

摘要

A bumper back beam for a vehicle includes an impact part positioned in a center portion, and tower parts formed at rear portions of both sides of the impact part so as to be fixed to crush boxes on the front ends of side members of a vehicle body, and is characterized in that the impact part is formed such that the section of the impact part has an inner space which is open towards the opposite inside portions of a bumper, and a stiffener is received in the inner space, wherein the inner space and the stiffener are formed with a curvature which is smaller than that of the back beam such that clearances are formed at both sides between the inner space and the stiffener. The bumper back beam improves impact resistance and maintains appropriate deformation while preventing damage to the side members, when a bumper is impacted.

主权项

1. In a bumper back beam for a vehicle including a bumper back beam body, the bumper back beam body comprising:
an impact part positioned in a center portion of the back beam body and having an inner space opened toward an opposite inside portion of the bumper back beam body; and tower parts formed at the rear portions of the both sides of the impact part and fixed to crush boxes which are mounted on the front ends of side members of a vehicle body; and a stiffener received in the inner space of the bumper back beam body and fixed at its both ends to the crush boxes along with the tower parts, wherein the inner space and the stiffener are formed with a curvature which is smaller than that of the bumper back beam such that clearances are formed at both sides between the inner space and the stiffener.