A vehicle rear suspension structure includes a torsion beam and a pair of arm units. Each of the arm units includes a trailing arm formed in a tubular shape extending in the vehicle front-rear direction, an end plate occluding a rear side opening of the trailing arm, an upper reinforcing member, and a lower reinforcing member. A shaft insertion hole is formed in an inner side portion of a rear arm of the trailing arm, the upper reinforcing member is joined to the rear arm to fit an upper side edge portion of a peripheral edge portion of the shaft insertion hole, and the lower reinforcing member is joined to the rear arm to fit a lower side edge portion of the peripheral edge portion of the shaft insertion hole.

A twist axle assembly (20) of a vehicle includes a pair of trailing arms (22) and a twist beam (24) extending along an axis (A) between first and second twist beam ends (26, 28). The twist axle assembly (20) further includes a bushing (38) interconnected to each one of the first and second twist beam ends (26, 28) and a respective trailing arm (22) for establishing a weld-less joint between the twist beam (24) and the trailing arm (24). In an embodiment, the twist beam (24) and bushings (38) are tubular, and the bushings (38) are press-fit or molded onto the respective first or second twist beam ends (36, 38). In a further embodiment, the trailing arms (26) define an orifice (40) aligned on the axis (A), and the tubular bushings (38) are press-fit into the orifices (40) of the trailing arms (26) to establish the weld-less joint.

The twist axle assembly includes a twist beam which is made of a single integral piece, extends along a length between opposite ends and the twist beam has an open cross-sectional shape between the ends. The twist beam is stamped into a U-shape with a middle section that extends in a first direction between a pair of trailing arm sections. The trailing arm sections extend at least partially in a second direction that is generally transverse to the first direction to reduce twisting stresses within the trailing arm portions during operation of the twist axle assembly.

Robotic devices are presented including: a body; an electronic computing device housed within the body; and at least two wheeled suspension systems coupled with the body, each wheeled suspension system including, a first suspension system including: a frame, a rotating arm pivotally coupled to the frame on a first end and coupled to a wheel on a second end, and an extension spring coupled with the rotating arm on a third end and the frame on a fourth end, where the extension spring is extended when the wheel is retracted, a second suspension system including: a base slidingly coupled with the frame, and a number of vertically positioned extension springs coupled with the frame on a fifth end and the base on a sixth end.

A torsion beam of a vehicle torsion beam suspension has a closed cross section. A beam center portion has an inverse substantially v-shaped cross section or a substantially v-shaped cross section. Circumference increasing portions having a longer circumferential length toward the beam ends are disposed at opposite sides of the beam center portion. Each circumference increasing portion has a beam width that is a width in the fore and aft direction of a vehicle body, the beam width gradually increasing toward a beam end, and increasing at a higher rate as a position of the beam width is closer to the beam end.

The present invention relates to an axle carrier 1 and to a method for the production of the axle carrier 1. The axle carrier 1 has an upper shell 2 from an aluminum die-casting and a lower shell 3 from a fiber composite material. On a ribbed structure of the lower shell 3, an upper end 14 of the reinforcing ribs 9 is preferably configured so as to be widened such that the bearing face between the reinforcing rib 9 and the upper shell 2 is enlarged and, on account thereof, the strength of the axle carrier 1 produced is increased.

A coupled torsion beam axle for buckling induction may include a torsion beam, a cross section of which varies laterally, a right axle coupler and a left axle coupler being respectively formed at both end portions of the torsion beam, the torsion beam being provided with a buckling induction member configured to induce buckling deformation by an external load applied to each of the right and left axle couplers.

This torsion beam manufacturing method is a method of manufacturing a torsion beam that includes a uniformly shaped closed cross-sectional portion of which a cross section orthogonal to a longitudinal direction is a closed cross section having a substantial V-shape or a substantial U-shape at any position in the longitudinal direction, and a shape changing portion which has a connection region leading to the uniformly shaped closed cross-sectional portion and including a closed cross section having a shape different from the shape of the closed cross section of the uniformly shaped closed cross-sectional portion. The torsion beam manufacturing method includes pulling process of applying a tensile force in the longitudinal direction to at least the connection region of a torsion beam material including the uniformly shaped closed cross-sectional portion and the shape changing portion, to obtain the torsion beam.

The disclosure is related to a body component or chassis component for a motor vehicle having at least one surface segment composed of a three-layer sheet-metal composite having a central layer and two outer layers, which bound the central layer on the outside and which are integrally joined to the central layer face to face. The outer layers are composed of a stainless steel alloy having a microstructure selected from the group of ferritic, austenitic, or martensitic microstructure and the central layer is composed of a heat-treatable steel alloy, and the body component or chassis component has a bending angle of greater than 80, determined in the plate bending test according to VDA 238-100, having an Rp0.2 yield strength of greater than 900 MPa.

An axle assembly includes a first rail assembly, a second rail assembly and an open-section twist beam connected to the first rail assembly and the second rail assembly. The twist beam includes an upper wall, a lower wall and rear wall wherein the upper wall and the lower wall are connected by the rear wall to define an open portion of the twist beam where the upper wall and the lower wall are separated by a vertical distance. The open portion of the twist beam is forward facing. The axle assembly further includes a torsion bar that extends through and is connected within the open portion of the twist beam.