US Patent 9902301 Sleeve device for a headrest

A sleeve device for a headrest comprising a sleeve body to be inserted into an opening in a frame of a vehicle seat, the sleeve body comprising an inner axial passage to accommodate a rod of the headrest, the inner axial passage including an inner wall, a top end portion and a bottom end portion; a head portion; an external side; and an upper inner seat portion at the inner the wall of the top end portion of the axial passage, the upper inner seat portion for encircling an upper portion of the rod of the headrest; and an upper inner bushing overmoulded to the upper inner seat portion, the upper inner bushing being made from an antifriction resilient plastic material and comprising an inner axial opening for guiding the rod of the headrest.