| 摘要 |
An automotive seat assembly (10) comprising a seat back frame (18), a headrest, (20) and at least one post (22) supporting the headrest (20) on the seat back frame (18) for vertical adjustment. The seatback frame (18) has at least one opening (24) for receiving the post (22). A tubular bushing (26) is disposed in the opening of the seatback frame (18) where the opening (24) has a bore for receiving the post (22). The tubular bushing (26) has a spring 36 disposed in the bore, wherein the spring 36 is used to adjust a clamping force on the post (22) allowing vertical movement of the headrest (20). Tab 38 can be rotated around the axis of spring 36 to increase the diameter of the spring by partly uncoiling it there by releasing the clamping force. Ribs 30 on the guide sleeve 28 prevent rotation of the bushing. |
