Disclosed are a vehicle suspension spring device and a vehicle suspension system having the same. The vehicle suspension spring device includes a leaf spring unit comprising at least one leaf spring disposed in a lateral direction of a vehicle, a pair of first coupling parts provided at opposite ends of the leaf spring unit in a longitudinal direction and rotatably coupled to a pair of axles on which opposite wheels of the vehicle are mounted, and a pair of second coupling parts provided at two points between the opposite ends of the leaf spring unit in the longitudinal direction to be rotatably coupled to a subframe of the vehicle.

A wheel suspension arrangement is provided for a vehicle having a longitudinal direction, a transverse direction and a vertical direction. The wheel suspension arrangement includes a wheel holder for supporting a vehicle wheel. A first vertical end region of the wheel holder is pivotally attached to a vehicle support structure by a rigid control arm and a second vertical end region of the wheel holder is attached to the vehicle support structure by a leaf spring. A longitudinal direction of the leaf spring is arranged substantially in the transverse direction of the vehicle. The leaf spring is pivotally attached to the vehicle support structure at a transverse centre region of the vehicle, and a centre of the leaf spring in the transverse direction is located vertically offset from a pivotal attachment location of the leaf spring. The pivotal attachment location of the leaf spring is vertically offset towards the side of the rigid control arm.

The invention provides an axle for wheels of a two-track motor vehicle. The axle has, on each vehicle side, a wheel carrier, a damper strut, a transverse link and a transverse leaf spring which controls the wheel at least partially laterally and/or in the vehicle longitudinal direction. The damper strut has a damper tube and a damper piston which can be moved in the damper tube along a damper longitudinal axis. The damper strut is attached by the damper tube to the wheel carrier. The transverse link is attached by a wheel-carrier-side end region to the wheel carrier. The transverse leaf spring extends substantially in the vehicle transverse direction and has at least one wheel-carrier-side end region. The transverse leaf spring is attached by the wheel-carrier-side end region thereof to the damper strut and is supported on the damper strut.

The invention provides an axle for wheels of a two-track motor vehicle. The axle has, on each vehicle side, a wheel carrier, a damper strut, a transverse link and a transverse leaf spring which controls the wheel at least partially laterally and/or in the vehicle longitudinal direction. The damper strut has a damper tube and a damper piston which can be moved in the damper tube along a damper longitudinal axis. The damper strut is attached by the damper tube to the wheel carrier. The transverse link is attached by a wheel-carrier-side end region to the wheel carrier. The transverse leaf spring extends substantially in the vehicle transverse direction and has at least one wheel-carrier-side end region. The transverse leaf spring is attached by the wheel-carrier-side end region thereof to the damper strut and is supported on the damper strut.

An independent wheel suspension for a two-track vehicle has a wheel carrier, a vibration damper designed and arranged in the manner of a damper strut, and a leaf spring element, which has, in particular, a fiber composite material or is made from a fiber composite material. The leaf spring element is oriented at least approximately in the transverse direction of the vehicle and is designed to provide a suspension function and, together with the vibration damper, to guide a vehicle wheel fastened to the wheel carrier when the independent wheel suspension is installed in a vehicle for functional usage. The leaf spring element is connected, on the wheel carrier end, to the wheel carrier via two rubber bearings, each having a bearing axis and a central bearing point, so as to be rotatable about the respective bearing axis of each rubber bearing and is designed to be connected, on the vehicle body end, to an axle support in a torsion-resistant manner and/or directly to a vehicle body.

An independent wheel suspension for a two-track vehicle has a wheel carrier, a vibration damper designed and arranged in the manner of a damper strut, and a leaf spring element, which has, in particular, a fiber composite material or is made from a fiber composite material. The leaf spring element is oriented at least approximately in the transverse direction of the vehicle and is designed to provide a suspension function and, together with the vibration damper, to guide a vehicle wheel fastened to the wheel carrier when the independent wheel suspension is installed in a vehicle for functional usage. The leaf spring element is connected, on the wheel carrier end, to the wheel carrier via two rubber bearings, each having a bearing axis and a central bearing point, so as to be rotatable about the respective bearing axis of each rubber bearing and is designed to be connected, on the vehicle body end, to an axle support in a torsion-resistant manner and/or directly to a vehicle body.

A vehicle lift kit for a golf cart is disclosed. The lift kit comprises a front suspension attached to a vehicle frame with a suspension body, a pair of lower control arms, a spring-leaf, and a pair of spindles connected to the lower control arms. Each spindle comprises a spindle shaft, an upper bracket, and a lower bracket. The upper control arms are configured to connect between a steering rack mount of the vehicle and the upper end of the spindle. Further, the lift comprises a camber alignment adjustment on the connector between the upper control arm and the upper bracket of the spindle to provide proper alignment. The spindle further comprises a support gusset to strengthen the joints. The lift kit also has grease fittings to provide lubrication of the mounting points. Further, the lift kit comprises a rear suspension kit for the golf cart.

A suspension device according to one embodiment of the present disclosure which is equipped with an upper arm which is supported by a knuckle of the vehicle wheel so as to be capable of oscillation, and also supported by a side member which extends in the vehicle front-rear direction so as to be capable of oscillation, wherein: the upper arm has a tip end section positioned at the outside end in the vehicle widthwise direction, and also has arm sections which fork from the tip end section toward the inside in the vehicle widthwise direction; and the upper arm is formed in a manner such that the cross-sectional area of one arm section is greater than the cross-sectional area of the other arm section.

A suspension device according to one embodiment of the present disclosure which is equipped with an upper arm which is supported by a knuckle of the vehicle wheel so as to be capable of oscillation, and also supported by a side member which extends in the vehicle front-rear direction so as to be capable of oscillation, wherein: the upper arm has a tip end section positioned at the outside end in the vehicle widthwise direction, and also has arm sections which fork from the tip end section toward the inside in the vehicle widthwise direction; and the upper arm is formed in a manner such that the cross-sectional area of one arm section is greater than the cross-sectional area of the other arm section.

An X-shaped spring device for a transportation vehicle wheel suspension having for each wheel side a first leaf spring and a second leaf spring made of fiber-reinforced plastics material and arranged one above the other. The first leaf spring is supported at the wheel side with one end and the second leaf spring is supported at the vehicle structure side with one end, and a first securing device on which the first leaf spring and the second leaf spring are joined and clamped, and which has a bearing for pivotable bearing at the vehicle structure side. The first securing devices of both wheel sides are connected to each other to provide a stabilizer action by using a spring.