The disclosure concerns a spring assembly with a leaf spring. The leaf spring extends in a vehicle longitudinal axis, supports a vehicle axle and is connected at least indirectly to a vehicle superstructure at a front end and at a rear end. In order to provide a wheel suspension with advantageous springing and damping behavior that is optimized with regard to weight and complexity, according to the disclosure it is provided that at least one damping region, which is at least partially fluid-filled, is integrated in the leaf spring.

A spring for use in conjunction with a vehicle, in particular a leaf spring (1), preferably a parabolic spring, has a single-part spring leaf (12) made of steel, in particular spring steel, having a central region (2) and two adjoining edge regions (4a, 4b), wherein the edge regions (4a, 4b) each have an end region (5a, 5b), the end regions (5a, 5b) can each be connected to a chassis in a stationary manner via a rolled eye (11), and the total length of the spring when installed on the vehicle is substantially unchangeable in all load states. In the unloaded state, the spring leaf (12) has two bending sections (13, 14), which each have a curvature with a curvature direction, wherein the curvature directions of the two bending sections (13, 14) are opposed, and the two bending sections (13, 14) merge into each other in the region of a turning point (15). The first bending section (13) is a vertical spring section and runs from the end region (5a) of the first edge region (4a) via the central region (2) to the turning point (15). The second bending section (14) is a horizontal and vertical spring section and runs from the turning point (15) to the end region (5b) of the second edge region (4b).

A leaf spring assembly resiliently supporting a wheel carrier on a vehicle body of a motor vehicle. The leaf spring assembly including first and second spring leaves and a clamp having a clamping part exerting a clamping force whereby the first and second spring leaves are held together by the clamp. A bridging part arranged between the first spring leaf and the clamping part transmits at least part of the clamping force from the clamping part to the first spring leaf bridging the second spring leaf and reducing the clamping force exerted thereon.

A suspension system configured to sit substantially within the profile of a vehicle platform such that none of the elements extend substantially above the plane of the vehicle platform. The suspension system may utilize an adaptable transverse leaf spring in combination with other suspension elements, to allow the vehicle platform to maintain a generally flat profile and accommodate a variety of different body like structures while maintaining the desired roll and ride stability stiffness.

Automotive leaf springs are produced from low-hardenability and specified hardenability steel, with identical and different length, width and thickness and constant or variable cross section profile, that are subjected to through-surface hardening and low tempering. The ideal critical diameter of hardening, carbon content and hardened layer depth depend on the thickness of constant cross section profile leaf and maximum and minimum thicknesses of variable cross section profile leafs. Adherence to the optimum correlations of parameters indicated make it possible to produce leaf springs with the best mechanical properties and longevity.

A spring device for a motor vehicle wheel suspension that includes a first leaf spring made of fiber-reinforced plastic and a second leaf spring made of fiber-reinforced plastic. The second leaf spring is shorter than the first leaf spring and together with the first leaf spring forms a V-shaped structure, which, in the region of the joined ends of the V-shape, has a first fastening device for the vehicle-body-side support and at the free ends of the V shape has a second fastening device on the first leaf spring for wheel-side support and a third fastening device on the second leaf spring for vehicle-body-side support.

A suspension for a wheeled vehicle include an axle with a mid-section and an end comprising an upper portion and a lower portion defining a space therebetween, a leaf spring having forward and rear ends attached to vehicle structure and a mid-section retained in the space and secured between the upper and lower portions, and a closure element attached to the axle end and at least partially closing an outboard end of the space. The upper and lower axle portions may be formed integrally with the axle mid-section or may be a separately-formed component secured to the axle. The space tapers from a greater vertical dimension at the outboard end thereof to a smaller vertical dimension at an inboard end thereof, and the leaf spring mid-section is wedged into the space. An intermediate element is disposed between the mid-section and at least one of the upper and lower axle portions.

An electrically controlled suspension includes a first spring with a first end and a second end, where the first end of the first spring is connectable to a forward frame bracket of a frame of a vehicle and where the second end of the first spring is connectable to a rear frame bracket of the frame of the vehicle via a rear spring support. The suspension includes a second spring with a first end and a second end, where the second end of the second spring is connected to the second end of the first spring. An electrically operated suspension control actuator is provided where the first end of the second spring is connected to the electrically operated suspension control actuator.

The invention relates to a leaf spring arrangement having a leaf spring made of a fibre-composite material and at least one bearing eye holder, wherein at least one end of the leaf spring is accommodated in a retaining element of the at least one bearing eye holder in a form-fitting manner in a longitudinal direction of the leaf spring, wherein the leaf spring has a length and a central longitudinal plane, wherein the leaf spring has, along its length, perpendicularly to the central longitudinal plane, a cross section in which both a depth and a height are constant along the entire length of the at least one end of the leaf spring, wherein the at least one end of the leaf spring is formed in an undulating manner, wherein the retaining element of the at least one bearing eye holder has a receptacle with a matching undulating shape, wherein the at least one end of the leaf spring has at least one undulation, wherein the receptacle of the at least one bearing eye holder is configured to accommodate the at least one undulation of the leaf spring. The leaf spring arrangement is distinguished by the fact that the at least one end of the leaf spring has at least two undulations, wherein the receptacle of the at least one bearing eye holder is configured to accommodate the at least two undulations of the leaf spring in a form-fitting manner.

The disclosure relates to a longitudinal leaf spring device for suspension of a body of a motor vehicle. and the longitudinal leaf spring device comprises a longitudinally formed leaf spring element and a coupling device that mechanically couples the leaf spring element to a motor vehicle axle. According to the disclosure, a holder device is provided that has a base holder element for fixed connection to a vehicle chassis and a suspension adjustment element that faces the leaf spring element and is fixedly connected to the base holder element. In this case, the leaf spring element is connected in a front region, fixedly to the base holder element, and the front region is provided to come into mechanical bearing with the suspension adjustment element in at least one operating state.