A method includes molding an outer impact beam made of carbon fiber reinforced plastics (CFRP) and separately molding an inner impact beam made of CFRP. The outer impact beam and the inner impact beam are coupled to each other to form an impact beam and the impact beam is coupled to an inner panel of a vehicle door.

The present invention relates to an impact beam having a structure in which a plurality of peak portions and a plurality of valley portions are repeatedly and alternately disposed, and including a reinforcement fiber that is continuously coupled to at least one of the plurality of peak portions and the plurality of valley portions along a length direction.

A vehicle side structure including a rear impact beam mounted in a rear side door, a rear quarter section having a flange overlapping a rear portion of the rear impact beam, and a gusset aligned with the rear portion of the rear impact beam in an overlap area between the rear portion of the rear impact beam and the flange of the rear quarter section.

A door beam including an aluminum alloy extruded material of a closed section structure having a welded part along the longitudinal direction, webs and an outer flange are inhibited from buckling and further the welded part in the outer flange is inhibited from breaking at the time of collision. In a cross section of an aluminum alloy extruded material perpendicular to the extrusion direction, each of the webs includes an outer part connected to the outer flange and an inner part connected to an inner flange and the thickness of the outer part is larger than the thickness of the inner part. Each of the outer parts is positioned in a region outside a cross section center of the aluminum alloy extruded material in the vehicle body width direction.

A door beam includes an aluminum alloy extrusion body extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inner side and an outer side in a width direction of a vehicle body. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and the pair of webs do not have a welded portion.

A door beam includes: an upper inner flange; a lower inner flange; an outer flange; an upper rib; and a lower rib. A thickness of the outer flange is larger than a thickness of the upper inner flange and a thickness of the lower inner flange. A thickness of the upper rib becomes gradually larger from the outer flange toward the upper inner flange, and a thickness of the lower rib becomes gradually larger from the outer flange toward the lower inner flange.

A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.

A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.

A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.

A vehicle constituent member and a manufacturing method for manufacturing the vehicle constituent member are provided. The vehicle constituent member includes: a body portion made of metal and having a vertical wall; a reinforcing member made of fiber reinforced resin and having a sheet shape, the reinforcing member being disposed on a surface of the vertical wall; and an adhesive layer provided between the surface of the vertical wall and the reinforcing member and connecting the vertical wall and the reinforcing member, the adhesive layer being configured such that a thickness of a part of the adhesive layer becomes thinner as the part of the adhesive layer is distanced outwardly from a surface end of the reinforcing member, the part of the adhesive layer being disposed outwardly from the surface end of the reinforcing member.