Height adjustable head restraint for a vehicle seat

US7758127B2 · kind B2 · utility

Assignee

• Lear Corporation · US

Inventors

• Tobias Bokelmann · Puchheim, DE
• Klaus Boes · Freising, DE
• Markus Schmid · Dietmanns, AT
• Achim Tscherbner · Ingolstadt, DE
• Stefan Brunner · Freising, DE

Key dates

• Filing date: Oct 29, 2008
• Grant date: Jul 20, 2010
• Expiry date: Oct 29, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60N2/894
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A vehicle seat head restraint assembly is provided with a stop mounted to a rod of a vehicle seat back. A frame is mounted to the rod to slide therealong. A head restraint is mounted to the frame. A shaft cooperates with the stop and the frame and includes a series of notches and the stop includes at least one projection that engages the notches in a locked rotary position of the shaft. The projection is disengaged from the notches in a released rotary position of the shaft. The shaft has a cam and an actuator has a follower arrangement for releasing the shaft to slide the head restraint frame along the rod. A head restraint assembly is also provided wherein the series of notches and the projection cooperate such that height adjustment in an upward direction only is permitted without actuation of the actuator.