A coupled torsion beam axle (CTBA) bushing is press-fitted into a bushing bracket provided at a tip of a trailing arm at each of two opposite sides of a CTBA suspension system. In particular, the CTBA bushing includes: an outer pipe including a through-hole formed therein; an inner pipe positioned in the through-hole; and a bushing rubber disposed in the through-hole and positioned between an outer peripheral surface of the inner pipe and an inner peripheral surface of the outer pipe, in which the bushing rubber includes: first compounds extending in a first direction, which is a diameter direction of the inner pipe, with the inner pipe interposed therebetween; and a second compounds integrated with the first compounds and extending in a second direction, which is perpendicular to the first direction, with the inner pipe interposed therebetween.

Torsion beam axles for vehicles are disclosed. An example torsion beam axle disclosed herein includes a first side assembly, the first side assembly including a longitudinal member and a receiver. The example torsion beam axle further including a second side assembly, and a cross strut extending transversely between the first side assembly and the second side assembly.

An embodiment component integration type rear lower includes a body frame having an end portion of a first side and an end portion of a second side and having a predetermined length, a front-rear connection member connecting a side sill at the end portion of the first side and connecting a rear side member at the end portion of the second side, a bush mounting member coupling a bush to the end portion of the first side, and a coupled torsion beam axle (CTBA) mounting member coupled to at least one of a CTBA, a chassis spring, or a shock absorber, the at least one of the CTBA, the chassis spring, or the shock absorber being engaged with the end portion of the second side.

An axle bearing carrier assembly having a swing arm of unitary construction that operatively associates with an adjustable tension plate for selectively connecting one of two different types of axle bearing carriers to the swing arm.

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.

A bush including an inner cylinder, an outer cylinder arranged radially outside the inner cylinder, and an elastic body connecting the inner cylinder and the outer cylinder, where a rubber portion 13 is provided with a bore (low-rigidity portion) 14 that extends a predetermined length in a circumferential direction and lowers rigidity in a radial direction, a convex portion 11a that projects from the inner cylinder 11 to the outer cylinder 12 is provided at a circumferential position corresponding to the bore 14 of the inner cylinder 11, and the convex portion 11a is arranged to be shifted to one side in the circumferential direction with respect to a circumferential center of the bore 14.

There is provided an end plate that includes a through hole that causes an outer wall portion and an inner wall portion to communicate with each other, into which an intruding portion provided in a wheel-side member can intrude, a first press-formed portion formed by depressing in a peripheral edge of the through hole in the inner wall portion. The end plate includes a second press-formed portion arranged in a part of a peripheral edge on the side of a peripheral end of the inner wall portion, which is a remnant of a portion where the first press-formed portion is arranged in the inner wall portion, and formed therein with a protruding portion by protruding a part of the peripheral edge, and a screw hole formed by penetrating through the protruding portion in the second press-formed portion between the outer wall portion and the inner wall portion.

An embodiment component integration type rear lower includes a body frame having an end portion of a first side and an end portion of a second side and having a predetermined length, a front-rear connection member connecting a side sill at the end portion of the first side and connecting a rear side member at the end portion of the second side, a bush mounting member coupling a bush to the end portion of the first side, and a coupled torsion beam axle (CTBA) mounting member coupled to at least one of a CTBA, a chassis spring, or a shock absorber, the at least one of the CTBA, the chassis spring, or the shock absorber being engaged with the end portion of the second side.

A trailing arm mounting bracket for connecting a trailing arm to a vehicle body includes: a fixing portion fixed to the vehicle body, a first connection plate and a second connection plate each extending from opposite ends of the fixing portion to support opposite ends of a mounting bush of the trailing arm and to which a fastening bolt fastened to the mounting bush is coupled, a first reinforcement portion to connect and reinforce the portions where the first and second connection plates and the fixing portion are connected with a truss structure, and a second reinforcement portion to connect and reinforce the first connection plate and the second connection plate at a position in the front of the mounting bush.

An axle bearing carrier assembly having a swing arm of unitary construction that operatively associates with an adjustable tension plate for selectively connecting one of two different types of axle bearing carriers to the swing arm.