A vehicle suspension includes at least one anchor bar, at least one axle lift spring, an auxiliary drop-type axle which may be selectively lifted or lowered and a single, integrated support attaching the at least one axle lift spring and the at least one anchor bar to the auxiliary drop-type axle, wherein the single, integrated support provides the only attachment of the at least one axle lift spring and the at least one anchor bar to the auxiliary drop-type axle, and wherein the support includes an open area configured to allow the passage of a cardan.

The anti-noise element (EAR) is applied to separate the end portions of each two spring blades (LM), superimposed and adjacent, of a spring bundle (FM) and comprises a metal plate (10) covered by a coating (20) in polyamide-11 thermoplastic resin and incorporating a median protrusion (12) to be fitted and retained into a corresponding hole (F) provided at the end portion of the spring blade (LM) against which the anti-noise element (EAR) is seated and retained.

A suspension arm for a chassis of a vehicle, having a first shell element which has a first open cross-section and having a second shell element which is connected to the first shell element and has a second open cross-section. The second shell element is arranged at least in part in the first open cross-section, and the open cross-sections are open in the same direction.

A suspension assembly for a vehicle may have a first end for pivotal mounting to a structural member of the vehicle and a second end opposite the first end for attachment of a damping arrangement and a stub axle. The suspension assembly may include first and second shell components that are welded together to form a substantially hollow body between the first and second ends.

An automobile undercarriage part of the present invention has a welded joint formed by base steel plate, wherein the chemical composition of a weld metal contains, with respect to a total mass of the weld metal, by mass %, C: 0.02% to 0.30%, Si: 0.10% to less than 1.0%, Mn: 1.2% to 3.0%, Al: 0.002% to 0.30%, Ti: 0.005% to 0.30%, P: more than 0% to 0.015%, and S: more than 0% to 0.030%, the following formula (1A), formula (1B), formula (2), and formula (3) are satisfied, and slag in a toe portion of the fillet weld satisfies a formula (4).

[Al]+[Ti]>0.05  Formula (1A)

[Ti]/[Al]>0.9  Formula(1B)

7×[Si]+7×[Mn]−112×[Ti]−30×[Al]≤12  Formula (2)

2.0<[Si]+[Mn]  Formula (3)

[Ti content on slag surface]>[Si content on slag surface]  Formula (4).

A vehicular suspension control arm comprises a first arm component and a second arm component formed from sheet metal, each arm component comprising an outer wall and two side walls, bushing connecting means adjacent a first end, at least one bracket receiving rivet aperture adjacent a second end, at least one component connecting rivet aperture located between the first end and the second end, a ride bushing and a handling bushing, a ball joint bracket comprising bracket rivet apertures corresponding to the at least one bracket receiving rivet aperture adjacent the second end of each of the first and second arm components and a plurality of rivets. When constructed, the ball joint bracket is riveted to both the first and second arm components adjacent the second end thereof via the at least one bracket receiving rivet aperture and the corresponding at least one bracket rivet aperture, the first arm component is riveted to the second arm component at the at least one component connecting rivet aperture, the ride bushing is connected at the first end of the first arm component and the handling bushing is connected at the first end of the second arm component.

A manufacturing method of a member according to an aspect of the present invention is a manufacturing method of a member including a specific three-dimensional tubular portion, the manufacturing method including: a U-forming step of performing U-forming on metal material sheet using a U-forming die and punch including a U-forming punch to manufacture a U-formed article having a recessed cross-sectional shape; and an O-forming step of causing side end portions of the U-formed article to abut each other by an O-forming die to form abutting portions, in which a forming condition ratio a=Du/Do is set to 0.85 to 0.95.

A suspension arm for a chassis of a vehicle, having a first shell element which has a first open cross-section and having a second shell element which is connected to the first shell element and has a second open cross-section. The second shell element is arranged at least in part in the first open cross-section, and the open cross-sections are open in the same direction.

A structural member includes a top sheet portion which has a first edge portion and a second edge portion facing the first edge portion, a wall portion which extends from the second edge portion in a direction intersecting the top sheet portion, and a closed cross-sectional portion which is provided in the first edge portion, in which the first edge portion is curved toward an inside of the top sheet portion in a plan view with respect to the top sheet portion, and when a distance from the first edge portion to the second edge portion of the structural member is referred to as a structural member width, the closed cross-sectional portion forms a closed cross section on a vertical cut plane of the structural member along a direction of the structural member width, the vertical cut plane of the structural member along the direction of the structural member width has an open cross section, and a shape of the vertical cut plane of the structural member including the closed cross-sectional portion is asymmetric with respect to a center of a length of the structural member width.

A vehicle suspension component, such as a lower control arm, that includes first and second stamped metal shells, a stiffening feature, and several connection nodes for operably connecting the suspension component to the rest of the vehicle suspension system. The first and second stamped metal shells may be stamped from next generation steel that is lightweight and strong, and are joined together in a clam shell or box-style type design so that the connections nodes are sandwiched therebetween. The stiffening feature may include a depression, a depression perimeter that at least partially surrounds the depression, a depression sidewall, a depression floor, and a depression weld, wherein the depression weld joins the shell interior surfaces of the first and second stamped metal shells together.