Adjustment assembly of a hydraulic steering system of a vehicle

An adjustment assembly of a hydraulic steering system of a vehicle, wherein the adjustment assembly is positionable between a steering column and a hydraulic steering unit of the hydraulic steering system, wherein the adjustment assembly is suitable to adjust a mutual angular position between a rotation angle of the steering column (α) and an effective steering angle of wheels (β), wherein the adjustment assembly comprises:

• an adjustment device comprising an electric motor and an electronic command unit commanding actuation of the electric motor;
• and
• an epicycloidal device comprising:
• i) a satellite-carrying member which acts as a first input being operatively connectable to the steering column;
• ii) at least one satellite gear supported and guided in rotation by the satellite-carrying member by means of a rotation shaft on which it is freely rotatably mounted;
• iii) a first solar gear which acts as an output being operatively connectable to the hydraulic steering unit, wherein the first solar gear is operatively connected to the at least one satellite gear;
• and
• iv) a second solar gear which acts as a second input and is operatively connected to the adjustment device and to the first solar gear, through the at least one satellite gear, in such a way as to command angular position and rotation of the first solar gear, and the output;
• wherein the at least one satellite gear has a first toothing and a second toothing, wherein the first toothing is geared with the first solar gear, wherein the second toothing is geared with the second solar gear.