Patent ID: 7841606
Filing Date: 2010-11-30
Classification: B62D,Y10T

Abstract:
1. Motor vehicle comprising: a chassis, wheels including at least two guide wheels at a front of the vehicle, each guide wheel being borne by a stub to which an arm known as a stub pivot arm is rigidly secured, said stub and said stub pivot arm being mounted for rotating around an axis known as the stub pivot axis, the stub pivot arm having one end secured to the stub and an opposite end known as the actuation end, a steering system comprising: wherein: the steering system comprises a unit forming a bar, known as the steering bar, said steering bar comprising at least two coaxial components mounted for sliding one relative to the other in an axial direction of said steering bar, one of the components being known as the steering component, the other component being known as the steered component; the steering component passes through the rack housing and bears the rack, such that rotating the pinion causes a translation of the steering component in the axial direction of the steering bar, the rack housing comprises a plate, known as a correction plate, comprising a slot forming a slide rail, known as a correction slide rail, receiving a roller suitable for moving along said correction slide rail, the steering system comprises two arms, known as correction arms, one of said correction arms being mounted articulated, at one end, on the roller and, at the other end, on the steering component, the other correction arm being mounted articulated, at one end, on the roller, and, at the other end, on the steered component, such that the steering bar and the two correction arms form a triangle that is deformable according to the position of the roller in the correction slide rail, the steering system comprises means for assembling the rack housing in the vehicle, suitable for allowing the rack housing to pivot in a plane (D) known as the steering plane, around an axis of said housing known as the attachment axis, the assembling means being moreover suitable for preventing any movement of the attachment axis in a transverse direction of the chassis and for allowing said attachment axis to move in a direction contained in the steering plane and in a longitudinal plane of the chassis, the steering column is suitable for absorbing any movement of the rack housing, the steering system comprises a first steering gear connecting the steering component to the actuation end of one, the first one, of the stub pivot arms, and a second steering gear connecting the steered component to the actuation end of the second stub pivot arm, the correction slide rail follows a suitable curve, according to the first and second steering gears, such that the vehicle wheel stubs extend in directions which intersect, at each time, at one and the same point.