Patent ID: 9073400
Filing Date: 2015-07-07
Classification: B60G

Abstract:
1. A motor-vehicle suspension system, comprising: at least one transverse arm for each wheel support, having one end pivotally connected to a respective wheel support of two wheel supports and an opposite end pivotally connected to a motor-vehicle supporting structure of a motor-vehicle, a suspension spring of a suspension, said suspension spring counteracts vertical movements of the two wheel supports and consists of a leaf spring arranged transversally with respect to a longitudinal direction of the motor-vehicle with a general plane lying horizontally and connected to the motor-vehicle supporting structure by elastic supports arranged symmetrically at intermediate positions between a center of the leaf spring and ends thereof, the ends of the leaf spring being pivotally connected to the two wheel supports at an upper part of each wheel support, two jack-type shock absorbers interposed between the wheel supports and the motor-vehicle supporting structure, said suspension being a multi-link suspension, in which each wheel support is connected to the motor-vehicle supporting structure by means of two transverse lower arms of said at least one transverse arm, a substantially longitudinal or inclined lower arm and at least one upper transverse arm formed by an end portion of the leaf spring, and wherein each jack-type shock absorber has opposite ends swingably connected to the respective wheel support and the motor-vehicle supporting structure, said leaf spring comprising a single leaf in a one-piece construction, said leaf spring comprising two portions of enlarged thickness at said intermediate positions for connection to respective elastic supports of the elastic supports, each of said portions of enlarged thickness comprising two seats for two respective elastic supports of the elastic supports connected to the motor-vehicle supporting structure, said seats being spaced apart from each other and aligned along the longitudinal direction of the motor-vehicle, and said leaf spring having a width along the longitudinal direction of the motor-vehicle which has a maximum value at said intermediate portions of enlarged thickness, and the end portions of the leaf spring which extend beyond said intermediate portions having a triangular configuration, with a base secured to the motor-vehicle supporting structure by said elastic supports and an apex at the end of the leaf spring, which is pivotally connected to the wheel support.