Abstract: The present disclosure relates to a rear wheel steering system for vehicles and vehicle comprising said system which allows rotating the rear wheels by means of a single actuator without increasing the suspended masses, comprising an independent suspension assembly for each rear wheel, wherein each independent suspension assembly comprises a suspension arm having a first end operatively connected to an axle of a wheel, each suspension arm having two second ends which are articulated to a fixed part of the vehicle, each suspension arm being able to rotate with respect to a rotation shaft where the two second ends of each suspension arm are articulated; the system comprising a synchronization device comprising at least one synchronization rod the ends of which are connected by means of sliding carriages to the rotation shafts, each sliding carriage being operatively connected to the axle of each wheel by means of a transmission rod.

Abstract: The present disclosure relates to a rear wheel steering system for vehicles and vehicle comprising said system which allows rotating the rear wheels by means of a single actuator without increasing the suspended masses, comprising an independent suspension assembly for each rear wheel, wherein each independent suspension assembly comprises a suspension arm having a first end operatively connected to an axle of a wheel, each suspension arm having two second ends which are articulated to a fixed part of the vehicle, each suspension arm being able to rotate with respect to a rotation shaft where the two second ends of each suspension arm are articulated; the system comprising a synchronisation device comprising at least one synchronisation rod the ends of which are connected by means of sliding carriages to the rotation shafts, each sliding carriage being operatively connected to the axle of each wheel by means of a transmission rod.

Abstract: The invention relates to a headrest system comprising: a headrest device (1); a plurality of sensors (2, 3); and an electromechanical headrest device positioning system, associated to said sensors (2, 3). Data are recorded during an upward movement of the headrest device (1), relating to the distance between the headrest device (1) and the head in a plurality of positions of the headrest device (1) throughout said upward movement. The upward movement ends when, through the sensors, the system detects that the headrest is at a certain height. Based on this data recorded during the upward movement, the headrest device (1) is moved substantially horizontally until it is located at a certain distance from the head.

Abstract: The invention relates to a headrest system comprising: a headrest device (1); a plurality of sensors (2, 3); and an electromechanical headrest device positioning system, associated to said sensors (2, 3). Data are recorded during an upward movement of the headrest device (1), relating to the distance between the headrest device (1) and the head in a plurality of positions of the headrest device (1) throughout said upward movement. The upward movement ends when, through the sensors, the system detects that the headrest is at a certain height. Based on this data recorded during the upward movement, the headrest device (1) is moved substantially horizontally until it is located at a certain distance from the head.