Vehicle bumper assembly

A vehicle bumper assembly comprising;

• a bumper;
• a bumper connection member attached to said bumper;
• a support bracket attached to said bumper via said bumper connection member, said support bracket being in the form of a molded multi-step tubular structure having a plurality of plastically deformable straight tube portions of different outer diameters contiguous to one another, said tube portions being formed by reducing and enlarging an initially-uniform-diameter blank tube radially at longitudinally spaced local positions;
• and a vehicle body member connected to said support bracket via a vehicle body connection member;
• wherein one end tube portion of said support bracket being connected to said bumper via said bumper connection member, and the other end tube portion of said support bracket being connected to said vehicle body member via said vehicle body connection member;
• said bumper connection member being installed to one end or one end portion of said bumper by welding;
• said bumper connection member having a connection hole on the surface thereof opening toward the direction to said vehicle body member;
• said one end tube portion of said support bracket being inserted into said connection hole of said bumper connection member and having a side surface welded to a peripheral edge of said connection hole;
• and
• said vehicle body connection member has an annular ridge pressed against and welded to an end edge of said one end tube portion of said support bracket, said annular ridge having a support surface defined between an outer peripheral wall wider than the outer diameter of said one end tube portion and an inner peripheral wall narrower than the inner diameter of said tube contiguous to said one end tube portion, said vehicle body connection member also having, in said support surface on a side toward said inner peripheral wall, a deformed-tube receiving hole.