Abstract: The headrest is adjustably mounted by a molded plastic guide inserted through an aperture in the mounting bracket concealed in the seat back and having a central bore for receiving a support post of the headrest. Longitudinally extending slots communicate with the central bore to define a plurality of circumferentially spaced radially yieldable flexure fingers. An abutment is carried by at least one of the flexure fingers and includes a ramp which momentarily deflects the flexure finger radially inward upon insertion of the plastic guide through the mounting bracket aperture and a shoulder which engages with the mounting bracket to retain the plastic guide in the mounting bracket. A spring bears radially inward upon at least one of the flexure fingers to urge frictional engagement with the support post and establish the support post at a desired vertically adjusted position. The support post has a necked down central portion defining an upwardly facing stop face.

Abstract: The headrest is adjustably mounted by a molded plastic guide inserted through an aperture of the mounting bracket concealed in the seat back and having a tubular body with a central bore therethrough for receiving the support post of the headrest. Flexure fingers are molded integrally with the tubular body and have a free state radially contracted position partly obstructing the central bore. One or more locking abutments are provided on the outside of the flexure fingers and are radially contracted therewith to facilitate insertion of the tubular guide through the mounting bracket aperture. Upon insertion of the headrest post the flexure fingers are forced radially outward to lock the locking abutments with the mounting bracket. The forced radial outward flexure of the flexure fingers induces a radial inward bias by which the flexure fingers frictionally engage and maintain the support post at a selected vertically adjusted position relative the seat back.