A bumper beam includes a first member, a second member, and an inner plate. The first member includes a top plate section, two vertical wall sections, and two flange sections. The two flange sections connect to the two vertical wall sections, respectively. The second member is plate-shaped, is joined to the two flange sections of the first member, and doses the gap between the two flange sections at least. The inner plate is joined to the two vertical wall sections of the first member and is disposed substantially in parallel with the second member in a space formed by the first member and the second member. Out of the first member and the second member, the second member is disposed facing the outside of a vehicle. Such a bumper beam has high energy absorption efficiency.

A bumper system (4) for a motor vehicle comprising a cross beam (1) which is globally orientated in a transverse direction (Y), said cross beam comprising a front wall (6) adapted to receive a crash impact force and a rear wall (5) opposed and spaced from said front wall, at least one absorber (2), at least an intermediate component (3) to attach the absorber (2) to the cross beam (1), said intermediate component (3) being connected to the rear wall (5) through a first contact area (10), distant from a longitudinal axis (LL), by an internal component distance, called L.sub.in, and an external component distance, called L.sub.out, which corresponds respectively to the minimum and maximum distance between said first contact area (10) and the longitudinal axis (LL), said longitudinal axis (LL) passing at mid width of the cross beam and being perpendicular to the transverse direction (Y), said intermediate component (3) being connected to the absorber (2) through a second contact area (20) distant from the longitudinal axis (LL) by an internal profile distance, called D.sub.in, and an external profile distance, called D.sub.out, which corresponds respectively to the minimum and maximum distance between the second contact (20) area and the longitudinal axis (LL), wherein a part of the intermediate component distant from the longitudinal axis (LL) by a distance comprised between L.sub.out and D.sub.out has a smaller bending stiffness (S.sub.interm) about a vertical axis (Z) than a part of the cross beam distant from the longitudinal axis (LL) by a distance comprised between L.sub.out and D.sub.in (S.sub.cross), said vertical axis (Z) being perpendicular to the transverse direction (Y) and the longitudinal axis (LL).

A first member (110) of an automotive structural member (1) has a flange portion (111), a first member ridgeline portion (112) connected to the flange portion (111), a protruding portion (113) having a top surface (113a) which is connected to, the first member ridgeline portion (112) and is aligned with a top surface (111a) of the flange portion (111) at the same level (L), and a recessed portion (114) adjacent to the protruding portion (113). A second member (120) has a second member ridgeline portion (121) having an upper surface (121a) in contact with a lower surface (112b) along the lower surface (112b) of the first member ridgeline portion (112), a vertical wall (122) connected to the second, member ridgeline portion (121), and a bottom wall (123) connected to the vertical wall (122). A stiffening member (200) supports the recessed portion (114).

Energy absorption at the time of load input is improved with high mass efficiency. A hollow member includes: a hollow metal member having a bending induction portion in a portion thereof in a longitudinal direction; and a resin material which is disposed in close contact with the metal member on both sides of the bending induction portion in the longitudinal direction, and is disposed in at least a part of a range of less than ⅚ of a cross-sectional height of the metal member from an end portion of the bending induction portion toward an outside in the longitudinal, in which an amount of the resin material per length in the longitudinal direction is larger on the outside of the bending induction portion than on an inside of the bending induction portion.

A reinforcement beam for an automotive component is continuously formed with a metal sheet that is roll formed to have at least one tubular portion that extends along a length of the reinforcement beam. A solid state forge weld is formed between an edge of the metal sheet and an intermediate portion of the metal sheet to close a seam that extends along the tubular portion of the reinforcement beam. Prior to forming the solid state forge weld, select portions of the metal sheet are heated to a desirable welding temperature with a high frequency current delivered by electrical contacts to opposing sides of the weld seam. The desired welding temperature may burn off a galvanized coating on the metal sheet at the select portions prior to forming the solid state forge weld that is generally void of zinc inclusions.

A vehicle includes a vehicle frame, a vehicle bumper and a load transfer assembly. The vehicle bumper is coupled to a front end of the vehicle frame and includes a center beam and a bumper beam extension that extends laterally from an end of the center beam. The load transfer assembly includes first and second pivot pins and a load beam. The first pivot pin is fixed to the bumper beam extension and the second pivot pin is fixed to the vehicle frame. The load beam has a first end pivotably coupled to the first pivot pin and a second end pivotably coupled to the second pivot pin. The load beam is configured to load the vehicle frame in a lateral direction upon a vehicle impact event.

A multi-tubular beam for a vehicle, such as a vehicle structure or a bumper reinforcement, includes an elongated beam formed with a metal sheet. The metal sheet has a central section and outer sections extending along a length of the metal sheet. The outer sections are disposed in opposing directions from the outer edges of the central section to provide adjacent first and second tubular portions. The central section forms a common center wall between the adjacent first and second tubular portions. A first edge portion of the metal sheet is disposed along and in parallel alignment with the center wall. The first edge portion is attached to the center wall at a first weld joint to form the first tubular portion. The first weld joint includes a weld material that extends through a thickness of the center wall and into a thickness of the first edge portion.

A bumper cross member for a motor vehicle, having a crossmember extending transversely to the longitudinal axis of the vehicle, and two crashboxes connected thereto and designed as hollow chamber sections. Each crashbox is connected with its end facing away from the vehicle to the crossmember in a respective end section thereof, and may be connected, with its end facing the vehicle, to a structural component of the vehicle. The crashboxes are supported with their end faces only in sections on the rear side of the crossmember, in particular such that the support is continuous or at least substantially continuous either in the upper and lower end-face areas, or in the two lateral end-face areas, while support of the other end-face areas is provided only in sections or absent. The distance between the end-face areas of the crashboxes, which are unsupported on the crossmember, is set from the rear side of the crossmember, such that only after a first phase of energy absorption with deformation of the crashbox is the end face facing the crossmember supported over its whole surface on the rear side of the crossmember.

A vehicle bumper is provided integrally to include metal beam-extension portions on both right-and-left end sides of a metal bumper-beam portion. In this vehicle bumper, the bumper-beam portion and the beam-extension portion include a vertical wall portion, an upper wall portion and a lower wall portion, and a resin reinforcing rib is joined to inner surfaces of a void formed of each of the wall portions. In addition, in this vehicle bumper, an extension dimension of the upper wall portion and the lower wall portion of the beam-extension portion is larger than an extension dimension of the upper wall portion and the lower wall portion in the bumper-beam portion, the resin reinforcing rib in the beam-extension portion is joined to the vertical wall portion, the upper wall portion, and the lower wall portion of the beam-extension portion; and the stiffness of the bumper-beam portion is higher than the stiffness of the beam-extension portion.

The present invention relates to a bumper crossmember 2 for a motor vehicle, which bumper crossmember 2 extends in the motor vehicle transverse direction and has a hollow profile in cross section, which hollow profile has, in particular, a rectangular cross section. A reinforcing plate 5 is inserted in a middle length portion, the depth T of the reinforcing plate 5 decreasing in the motor vehicle longitudinal direction X toward the ends of the reinforcing plate 5.