| 摘要 |
<p>An automotive seat assembly (10) includes a seatback assembly (12) including an upper seatback surface (16) and a guide stem (30) positioned within. A head restraint post (22) is positioned within the guide stem (30), and includes a head restraint mount end and a seatback insertion end (24). A head restraint element (18) is mounted to the head restraint mount end. A roller guide (26) is mounted in proximity to the upper seatback surface (16) and comprises a bezel element (28) inserted into the guide stem (30). A primary roller housing (34) is mounted to said bezel element (28) and forms a center cylindrical path (32) through which the head restraint post (22) passes. A primary roller element (36) is rotatably mounted within the primary roller housing (34) and is biased into communication with the head restraint post (22) by way of a roller bias (38) such that the head restraint post (22) is restrained from motion absent the application of a vertical adjustment force. A housing cap (56) is mounted over the bezel element (28).</p> |
