Eccentric yoke with backlash compensation for the steering system of a motor vehicle

A yoke device with eccentric for steering a motor vehicle, the yoke device comprising:

• a rotary pad which has an outer periphery and an inner periphery off centered with respect to the outer periphery, the rotary pad being rotatably mounted in a steering casing around a rotation axis parallel with the longitudinal axis of the rack, the outer periphery of this pad bearing against a cradle of arched shape belonging to a support mounted in the steering casing, whereas its off centered inner periphery is applied against the back of the rack, in such a manner as to push back the latter towards the teeth of a steering pinion, said pad being biased and/or positioned in rotation by a clearance compensation mechanism with spring means, acting on a radial arm of the rotary pad,
• the clearance compensation mechanism comprising:
• a thrust member mounted moveable in translation on the support but immobilized in rotation with respect to this support and pressed against the radial arm of the rotary pad as a result of a spring inserted between this thrust member and the support or an element integral with the support,
• a mobile stop rotatably mounted relatively to said support or said element,
• at least two gearings with stepped teeth disposed on as many sectors at an end of the mobile stop and cooperating with notches formed on the thrust member, or vice versa,
• and a torsion spring linking the mobile stop to the support or to the element integral with the support,
• in such a manner that the notches may successively cooperate with the stepped teeth of the gearings,
• wherein the gearings with stepped teeth comprise on a sector a gearing called pilot gearing, with teeth of globally planar shape but each provided with a relief, and at least one gearing located on another sector, with teeth of globally planar shape, without relief.