A bumper reinforcement beam includes sheets pre-formed to have integral features and to have a final beam shape with non-radiused corners and optimal impact properties, including beams with constant or varied cross-sectional shapes, and beams made of steel, aluminum, or hybrid materials or combinations of material, all of which allow minimization of weight. The non-radiused corners offer excellent impact strength and properties. Beam impact properties can be improved or locally tuned for particular functional requirements by material selection, or by adding an internal reinforcement on an inside center of the front wall, or by localized annealing of the welds to minimize stress risers, or by localized features and shapes. The sheets can be welded using welding processes that provide low heat-affected-zones around the weld or by localized annealing, thus minimizing any adverse effect of welding.

A vehicle body component for a motor vehicle is described, wherein the component is metallurgically connected to at least one other component, wherein the components have a flat contact area with each other, wherein one of the components is constructed as a solder-plated sheet part, and the metallurgical connection is brought about by a furnace soldering procedure. In particular, the vehicle body component is constructed as a bumper consisting of a bumper strut (SFT) extending substantially over the vehicle width and of at least one carrier (T) that carries the bumper strut (SFT) opposite the vehicle body, wherein at least one of the components is a solder-plated sheet part.

A reinforcement beam for a vehicle has an outer beam profile and an inner beam profile. The outer beam profile define an elongated hollow body and includes a front wall portion and a rear wall portion. The outer beam profile may include upper and lower flanges that formed in planar extension of the font wall portion. The inner beam profile may include a C-shape defining an upper shear wall and a lower shear wall that each extend between the front wall portion and the rear wall portion. The outer beam profile and the inner beam profile may be formed from a single sheet material through a roll-forming process. The inner beam profile may be present over a central section of the elongated hollow body and have a length that is less than half the length of the elongated hollow body.

A vehicle reinforcement beam is roll formed from a metal sheet to provide a multi-tubular reinforcement beam that includes two adjacent tubular sections that share a common center wall. The outer sections the metal sheet extend from opposing ends of the common center wall and are formed to enclose the adjacent tubular sections. An edge portion of the metal sheet that is bent to have a bend radius of about 3-9 mm, where the edge portions attach in abutting and continuous contact with the common center wall to form crevices between the adjacent tubular sections along the first and second faces. A weld is formed 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 that are configured to improve bending strength and torsional strength of the reinforcement beam.

A reinforcement beam is roll formed from a metal sheet for use in a vehicle bumper system. The reinforcement beam includes adjacent tubes having a common center wall and lateral portions extending from opposing sides of the common center wall that are roll formed simultaneously in the same rotational direction to enclose interior volumes of the adjacent tubes and to define top and bottom walls and front and rear wall of the reinforcement beam. The front walls of the adjacent tubes each include a channel rib depressed into the interior volume of the respective adjacent tube longitudinally along the reinforcement beam for stiffening the respective front wall. A weld is formed separately in each of the seams between the front walls and between the rear walls, thereby defining a crevice rib between the channel ribs to improve the bending strength and torsional strength of the reinforcement beam.

A top sheet (210), two walls (221, 222), and two ridge portions (231, 232) are provided, tensile strengths of the top sheet (210) and the walls (221, 222) are 1470 MPa or more, each of the two ridge portions (231, 232) extend between the top sheet (210) and the walls (221, 222), in a longitudinal direction of the top sheet (210), and a cross section of a center portion in the longitudinal direction is an open cross section having a groove shape. In the cross section, the top sheet (210) includes a central groove part (260) extending in the longitudinal direction at a center of a width and a small groove part between the central groove part (260) and each of the ridge portions (231, 232), and a depth of the groove part at the center is 15 times or more and 25 times or less a sheet thickness of the top sheet (210), a depth of each of the small groove parts (240, 250) is 2 times or more and 13 times or less the sheet thickness, and an interval between each of the small groove parts (240, 250) and the ridge portion (231, 232) is 30 times or less the sheet thickness.

One bumper system for a vehicle includes a bumper bracket and a deformation element connected to the bumper bracket. The bumper bracket is composed of a metallic workpiece with an undulating form such that the bumper bracket has at least one undulation trough and at least two undulation peaks, and reinforcement zones are formed in regions of the undulation trough. Another bumper system for a vehicle includes a bumper bracket and a deformation element connected to the bumper bracket. The bumper bracket has an undulating form such that the bumper bracket has a plurality of undulation troughs and a plurality of undulation peaks, and reinforcement zones are formed in each undulation trough. In each system, a second deformation element may be connected to the bumper bracket, and at least one characteristic of the reinforcement zones may increase or decrease between the deformation elements and a middle of the bumper bracket.

The invention relates to a bumper for a motor vehicle, in particular a front bumper, having at least two deformation bodies which are at a distance from one another and of which the center or longitudinal axes, in the mounted state, are oriented substantially parallel to the direction of travel of the motor vehicle, and having a plurality of crossmembers which have a closed profile and which are arranged one above the other and are connected to the deformation bodies. The crossmembers are formed from a group of at least three crossmembers, wherein the respective crossmember of the group has a cross-sectional profile which comprises at least five corners.

A protection device (100) for a vehicle chassis includes a first flange plate (211) obliquely disposed to a rear side of a beam (10); a second flange plate (221) having a front end face abuts against a rear end face of the first flange plate (211), and connected to the first flange plate (211) through a bolt; a left side plate (222) and a right side plate (223) provided in perpendicular to a rear end face of the second flange plate (221); a connecting plate (224) having a left end connected to the left side plate (222) and a right end connected to the right side plate (223), and arranged close to front ends of the left side plate (222) and the right side plate (223); and a bearing member provided to the rear end face of the second flange plate (221) and located between the left side plate (222) and the right side plate (223).

In order to improve an impact-absorbing crossmember which is mountable under a bumper unit of a vehicle body on a vehicle rear thereof, wherein the crossmember extends in a transverse direction running approximately parallel to the bumper unit and has support elements arranged at the ends for support on support regions of the vehicle rear, and wherein the support elements are connected to one another by a central unit of the crossmember, in such a way that the crossmember can be produced as simply as possible and thus as cost-effectively as possible, it is proposed that the central unit has a box-shaped structure comprising wall elements and that at least one of the wall elements of the box-shaped structure has extensions which extend in one piece from the box-shaped structure into the support elements and form a structural element of the support elements.