Motor-vehicle seat

Motor-vehicle seat, comprising:

• a backrest, having a supporting structure, and
• a head-rest, including a supporting frame mounted onto the supporting structure of the backrest,
• wherein said supporting frame of the head-rest is mounted onto the supporting structure so as to be both adjustable by a first movement along a substantially vertical direction and rotatable by a second movement around a transverse axis with respect to the supporting structure of the backrest, and
• in that there are provided first and second separate flexible cable control means, respectively for controlling said first and second movements of the frame of the head-rest, in order to adjust the position of the latter,
• wherein the frame of the head-rest is mounted so as to be rotatable around a first transverse axis on the supporting structure of the backrest, while being slidable in a substantially vertical direction,
• in that there is provided an auxiliary arm having an upper end pivoted to the lower end of the frame of the head-rest and a lower end pivoted around a second transverse axis to the supporting structure of the backrest, said second transverse axis (21) being slidable along a substantially vertical direction, and
• wherein said first control means comprises a first flexible cable having one end connected to the frame of the head-rest and arranged so as to pull said frame upwardly, causing said movement along a substantially vertical direction with respect to the supporting structure of the backrest, when said first cable is put under tension,
• wherein said second control means comprises a second flexible cable interposed between said frame and said auxiliary arm so as to decrease the angle defined between said frame and said auxiliary arm when said second cable is put under tension, and
• wherein a single return spring is interposed between the supporting structure of the backrest and said auxiliary arm, so as to bias said second transverse axis downwardly.