Adjustable head-rest for a motor vehicle seat or the like

Claim 1

An adjustable head-rest for a seat, comprising a fixed mount for fixing on the seat, a first semi-case and a second semi-case, pivot means pivotally interconnecting the two semi-cases in upper parts of the two semi-cases for relative pivotal movement about a first pivot axis, the first semi-case being pivotally mounted in a lower part thereof on the mount to pivot relative to the mount about a second pivot axis, a frame of a padding cushion for supporting a user's head and carried by the second semi-case, a first control device and a second control device mounted respectively in a first position and a second position directly on said mount for respectively adjusting angular positions of the first semi-case and second semi-case about said pivot axes relative to said mount, each semi-case having a lateral wing, first connecting means connecting the first control device to the wing of the first semi-case and second connecting means connecting the second control device to the wing of the second semi-case in an upper part of the wing of the second semi-case in a position adjacent to but spaced from said first pivot axis, said second position of the mounting of the second control device on said mount being spaced from said second pivot axis, and said first and second pivot axes, said second connecting means and said second position forming substantially a deformable parallelogram structure, the second control device and said second connecting means being such as to allow pivotal movements of said semi-cases relative to said mount about said pivot axes when adjusting their angular positions relative to said mount by means of said control devices but maintaining said second connecting means at a fixed distance from the mount determined by the adjustment effected by the second control device so that the pivoting of the first semi-case about said first pivot axis shifts the cushion frame in a substantially horizontal direction while maintaining the cushion frame substantially in the same angular position relative to the mount and the pivoting of the second semi-case by means of the second control device for adjusting purposes does not affect the position of the first semi-case relative to the mount and adjusts the position of the cushion frame in a substantially vertical direction relative to the mount.