Abstract: A sleeve device for a headrest includes a sleeve body for insertion into a vehicle seat. The sleeve body includes a tubular wall describing an inner axial passage configured to receive a rod of the headrest, and having an upper portion, a lower portion, and a central portion between the upper and lower portions; and at least one elongate rib member overmoulded to an inner surface or an outer surface of the tubular wall and extending along the tubular wall, preferably between the lower portion and the upper portion, wherein the at least one rib member is configured to contact an outer surface of the rod when extending along the inner surface, or is configured to engage an external component, for example the frame of the vehicle seat, when extending along the outer surface.

Abstract: A sleeve device for a headrest includes a sleeve body for insertion into a vehicle seat. The sleeve body includes a tubular wall describing an inner axial passage configured to receive a rod of the headrest, and having an upper portion, a lower portion, and a central portion between the upper and lower portions; and at least one elongate rib member overmoulded to an inner surface or an outer surface of the tubular wall and extending along the tubular wall, preferably between the lower portion and the upper portion, wherein the at least one rib member is configured to contact an outer surface of the rod when extending along the inner surface, or is configured to engage an external component, for example the frame of the vehicle seat, when extending along the outer surface.

Abstract: 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.

Abstract: 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.

Abstract: Light headrest optimised for production resources, comprising a head piece and bars made by overmolding on rigid cores, where said headrest is a single-piece structural body that comprises the bars and the head piece. Method for obtaining the headrest comprising the stages: (i) coupling the two rigid cores inside the injection mold having the final shape of the headrest; (ii) injecting the fused material in the mold and overmolding on the rigid cores; (iii) opening the mold and extracting the finished headrest; (iv) placing polymeric foam in the empty spaces of the single-piece structural body.