System for the displacement of a neck rest in response to the displacement of a vehicle seat in an automobile

A system for the displacement of a neck rest in response to the displacement of a vehicle seat in an automobile, wherein the neck rest is mounted to a first structural part (10) which is height-displaceably mounted to a second structural part (42), the latter being fixedly secured to the rest of the seat, the system having the following features:

• a rope (20) defining a loop to transfer a force along the loop, one section of the rope (20) being connected to the first structural part (10), the rope being guided about two spaced idle rollers, one of the rollers being rotatably supported by the seat and the other by the second structural part (42)
• a first coupling part (22) fixedly connected to the rope (20)
• a second coupling part (40) fixedly connected to the vehicle
• a coupling element (28) movably supported on the seat and selectively engageable with the first coupling part (22)
• actuating means (38) for the coupling element (28) on the seat adapted to coact with the second coupling part in response to the position of the seat such that in a forward position and upon displacement of the seat from the forward towards the rear position along a predetermined path or upon displacement of the seat from a rear position towards the forward position after a predetermined path the second coupling part coacts with the actuating means such that the coupling element is positively connected to the first coupling part and the second coupling part and
• locking means which lock the first coupling part when the coupling element (28) is in disengagement with the first coupling part (22).