A twist axle assembly (20) of a vehicle includes a pair of trailing arms (22) and a twist beam (24) having a base portion (46) extending along an axis (A) between first and second twist beam ends (42, 44). The twist beam (24) includes a pair of side walls (48) extending downwardly from the base portion (46) and each disposed in spaced relationship with the trailing arms (22). At least one mounting bracket (54) extends from a first mounting bracket end (56) disposed in abutting relationship with a respective trailing arm (22) to a second mounting bracket end (58) disposed in overlaying relationship the side walls (48) of the twist beam (24) for allowing the mounting bracket to axially slip or slide along the side walls (48) of the twist beam (24) and provide for lateral or axial adjustment of the twist axle assembly (20) during the manufacturing process.

A wheel carrier mounted on a rear axle body of a vehicle, which wheel carrier comprises a supporting plate and a bearing plate. The supporting plate coincides with a virtual king-pin axis and the properties of the supporting plate are such that the supporting plate may bend around the virtual king-pin axis in the area of a flexible supporting section. The bearing plate comprises a section with such properties that the section is allowed to deflect in a lateral direction of the vehicle. When a lateral force F.sub.lateral and a brake force F.sub.brake are applied to the wheel carrier, e.g. during cornering and braking, the properties of the supporting plate and the bearing plate create lateral force under steer and brake force under steer.

A suspension system for a vehicle is provided. The vehicle comprises a pair of rear wheels and a prop-shaft. A rear drive unit is operably coupled between the prop-shaft and the pair of rear wheels, the rear drive unit being configured to transmit torque from the prop-shaft to the pair of rear wheels. A twist-beam structure is provided having a first trailing arm and a second trailing arm. Each of the trailing arms is operably coupled to one of the pair of rear wheels. The twist-beam structure further comprising a curved beam member extending between the trailing arms, the curved beam member having a center portion disposed offset from the prop-shaft. A Watt linkage includes a first link coupled to the first trailing arm and a second link coupled to the second trailing arm.

An alignment adjustment device includes an actuator that is fixed to a vehicle body side support member and that is connected to an outer peripheral surface of a hub carrier so as to rotate the hub carrier. An intersection between a first axis and a second axis and an intersection of a universal joint are both positioned inside a wheel, and the intersection of the universal joint is inside the hub carrier.

A semi-rigid axle for a vehicle may include a torsion profile, which extends in a Y direction and is open downward in a Z direction; and two longitudinal control arms, which are connected to the semi-rigid axle and are each connected to the torsion profile by a gusset plate arrangement. Each gusset plate arrangement has a first gusset plate welded to one of the two longitudinal control arms and a second gusset plate arranged at least partially above the first gusset plate. First and second connecting sections of the first and second gusset plates are connected to one another and each of the first and second gusset plates is welded to an inside of the torsion profile on both sides in an X direction.

A torsion beam suspension capable of preventing an abrupt rigidity change in a connection part between a trailing arm and a torsion beam is provided.

The present invention is characterized in that in a torsion beam suspension 100 in which to right and left trailing arms 50 extending in a front-rear direction of a vehicle body and swinging vertically, a torsion beam 16 extending in a right and left direction of the vehicle body is joined, two or more types of rigidity adjustment portions 15, 18, 24 and 25 which adjust a rigidity from the trailing arms to the torsion beam are disposed with positions of the rigidity adjustment portions displaced from each other.

A torsion beam suspension capable of preventing a rapid change in rigidity at a connection portion between a trailing arm and a torsion beam is provided.

The present invention is a torsion beam suspension 100 including an upper member 10 and a lower member 20, and including right and left trailing arms 50 configured to include a pair of trailing arm configuration members 11 and the pair of lower members and configured to extend in a longitudinal, direction of a vehicle body and to be swingable in a vertical direction and a torsion beam 16 which is disposed between the right and left trailing arm configuration members the upper member 10. The lower member includes an upper connection 21 and a beam joint portion 22 inclined from the upper connection 21 to a bottom portion of the U-shaped cross section of the torsion beam and joined with the torsion beam.

An assembly (100) for a vehicle includes two longitudinal members (1, 2) and a crossmember (3) connected therebetween at a connection point (6) of the crossmember (3) to the longitudinal members (1, 2). The crossmember (3) is made predominantly of fiber composite material and the longitudinal members (1, 2) are made predominantly of a metal material. The connection point (6) between the crossmember (3) and the longitudinal member (1, 2) comprises an overlapping region (B), in which a connection segment (8) of the longitudinal member (1, 2), which is predominantly composed of metal material, overlaps at least in some segments with a part of the crossmember (3), which is predominantly composed of fiber composite material.

A wheel carrier mounted on a rear axle body of a vehicle, which wheel carrier comprises a supporting plate and a bearing plate. The supporting plate coincides with a virtual king-pin axis and the properties of the supporting plate are such that the supporting plate may bend around the virtual king-pin axis in the area of a flexible supporting section. The bearing plate comprises a section with such properties that the section is allowed to deflect in a lateral direction of the vehicle. When a lateral force F.sub.lateral and a brake force F.sub.brake are applied to the wheel carrier, e.g. during cornering and braking, the properties of the supporting plate and the bearing plate create lateral force under steer and brake force under steer.

A suspension structure includes a pair of trailing arms (12) each having at its front end a pivot (14) that is attached to a vehicle body, a beam member (13) connecting the pair of trailing arms, and a pair of in-wheel motor drive devices (31) coupled and fixed to rear end regions of the trailing arms. The position of the pivot (14) in a lateral direction of a vehicle is included in a range A, B, and C from an inner end to an outer end of the in-wheel motor drive device (31) in the lateral direction of the vehicle.