Seat assembly has front shell and rear shell that are configured to move in unison such that front shell moves greater distance than rear shell when headrest is moved

摘要

The seat assembly has a support post (22) that is located on a seat back. A headrest is located on the support post. The headrest has a front shell and a rear shell. The front shell and rear shell are configured to move in unison such that the front shell moves a greater distance than the rear shell when the headrest is moved. The front and rear shells are configured to move in a ratio of 2:1. The front shell includes an opening that faces toward the support post. The rear shell is moveably located in the opening.