Multi-tubular reinforcement beam with center leg

A vehicle reinforcement beam roll formed from a metal sheet, said vehicle reinforcement beam comprising:

• a multi-tubular reinforcement beam comprising two adjacent tubular sections that share a common center wall and are configured to span across a portion of a vehicle, wherein opposing end portions of the reinforcement beam are configured to attach at the vehicle;
• wherein the reinforcement beam includes a longitudinal curvature along a length of the reinforcement beam, and wherein the two adjacent tubular sections of the reinforcement beam each include a equal radius of longitudinal curvature;
• wherein the reinforcement beam is formed from a metal sheet having a first outer section and a second outer section that extend in generally opposing directions from a first end and a second end of the common center wall, wherein the first outer section is formed to attach at the second end of the common center wall to enclose a first tube of the adjacent tubular sections, and wherein the second outer section is formed to attach at the first end of the common center wall to enclose a second tube of the adjacent tubular sections;
• wherein the first outer section is shaped to define a first wall, a second wall, and a third wall that together with the common center wall form the first tube, wherein the second outer section is shaped to define a fifth wall, a sixth wall, and a seventh wall that together with the common center wall form the second tube, and wherein the first and fifth walls define a first face of the reinforcement beam and the third and seventh walls define a second face of the reinforcement beam on an opposing side of the reinforcement beam;
• wherein a channel rib is disposed on each of the first wall and the fifth wall and extends longitudinally along the reinforcement beam, wherein each channel rib comprises opposing side wall sections that protrude into an interior volume of the respective first and second tubes and interconnect at a base section of the respective channel rib, wherein a width diameter is defined between the opposing side wall sections and is between 10%40% of a width of the respective first or second tubular section;
• and
• wherein the first and seventh wall sections each include an edge portion of the metal sheet that is bent to have a bend radius of 3-9 mm and that attaches in abutting and continuous contact with the common center wall, wherein crevices are defined at the interface of the edge portions and the common center wall along the first and second faces, and wherein a weld having a continuous strip of bonded material is formed with laser welding in each of the crevices to define crevice ribs in general alignment with and at each of the opposing first and second ends of the common center wall, and wherein the opposing side wall sections of the channel rib are parallel to each other and the common center wall and configured to improve bending strength and torsional strength of the reinforcement beam.

A vehicle reinforcement beam roll formed from a metal sheet, said vehicle reinforcement beam comprising:

• a multi-tubular reinforcement beam comprising two adjacent tubular sections that share a common center wall and are configured to span across a portion of a vehicle frame, wherein opposing end portions of the reinforcement beam are configured to attach at the vehicle frame, and wherein the two adjacent tubular sections extend longitudinally in parallel alignment with each other;
• wherein the reinforcement beam is formed from a metal sheet comprising a first outer section and a second outer section that extend from a first end and a second end of the common center wall, wherein the first outer section is limited to attach at the second end of the common center wall to enclose a first tubular section, and wherein the second outer section is formed to attach at the first end of the common center wall to enclose a second tubular section;
• wherein the first outer section is shaped to define a first wall, a second wall, and a third wall that together with the common center wall form the first tubular section, and wherein the second outer section is shaped to define a fifth wall, a sixth wall, and a seventh wall that together with the common center wall from the second tubular section;
• wherein a channel rib is disposed on each of the first wall and the fifth wall and extends longitudinally along the reinforcement beam, wherein each channel rib comprises opposing side wall sections that protrude into an interior volume of the respective first and second tubular sections and interconnect at a base section of the respective channel rib, wherein a width diameter is defined between the opposing side wall sections and is between 10%-41% of a width of the respective first or second tubular section;
• and
• wherein the first and seventh wall sections each include an edge portion of the metal sheet that is bent to have a bend radius of 3-9 mm, wherein radiused corners are defined between the common center wall and the third and fifth walls and each include a bend radius of 3-9 mm, wherein the edge portions attach in abutting and continuous contact with the common center wall to form crevices between the edge portions of the metal sheet and the radiused corners at the common center wall, and wherein a weld is formed with laser welding in each of the crevices to define crevice ribs in general alignment with each of the opposing first and second ends of the common center wall and wherein the opposing side wall sections of the channel rib are parallel to each other and the common center wall.