Adjustable Headrest for a Vehicle Seat
First Claim
Patent Images
1. An adjustable headrest assembly for a vehicle seat having a seat cushion portion and a seat back portion;
- the headrest assembly comprising;
a fixed headrest portion secured to the seat back portion;
a movable headrest portion mounted on the fixed headrest portion at location adjacent the head of a vehicle occupant;
the mounting for the movable headrest portion comprising arcuate, telescoping members, one telescoping member forming a part of the movable headrest portion and the other telescoping member forming a part of the fixed headrest portion;
at least one spring between the movable and fixed headrest portion for applying a spring force for adjusting the movable headrest portion in a forward direction relative to the fixed headrest portion; and
at least one releasable locking element securing the movable headrest portions together against a biasing spring force; and
the locking element being released in response to an inertia force of a vehicle rear impact.
1 Assignment
0 Petitions
Accused Products
Abstract
An adjustable headrest assembly for a vehicle seat is disclosed. The assembly has a portion fixed to a seat frame and an adjustable portion that moves relative to the fixed portion on a circular arcuate path under spring forces. Relative movement is triggered by a vehicle rear crash event.
27 Citations
13 Claims
-
1. An adjustable headrest assembly for a vehicle seat having a seat cushion portion and a seat back portion;
- the headrest assembly comprising;
a fixed headrest portion secured to the seat back portion; a movable headrest portion mounted on the fixed headrest portion at location adjacent the head of a vehicle occupant; the mounting for the movable headrest portion comprising arcuate, telescoping members, one telescoping member forming a part of the movable headrest portion and the other telescoping member forming a part of the fixed headrest portion; at least one spring between the movable and fixed headrest portion for applying a spring force for adjusting the movable headrest portion in a forward direction relative to the fixed headrest portion; and at least one releasable locking element securing the movable headrest portions together against a biasing spring force; and the locking element being released in response to an inertia force of a vehicle rear impact. - View Dependent Claims (2, 3, 4, 5, 6, 10, 11, 12, 13)
- the headrest assembly comprising;
-
7. An adjustable headrest assembly for a vehicle having a vehicle seat with a seat cushion portion and a seat back portion;
- the headrest assembly comprising;
a fixed headrest portion secured to the seat back portion; a movable headrest portion mounted on the fixed headrest portion at location adjacent the head of a vehicle occupant; the mounting for the movable headrest portion comprising arcuate, telescoping members, one telescoping member forming a part of the movable headrest portion and the other telescoping member forming a part of the fixed headrest portion; at least one spring between the movable and fixed headrest portion for applying a spring force for adjusting the movable headrest portion in a forward direction relative to the fixed headrest portion; and at least one releasable locking element securing the movable headrest portions together against a biasing spring force; an inertia impact sensor located at the rear of the vehicle; and an electric actuator electrically connected to the sensor and forming a part of the headrest assembly for releasing the locking elements to trigger relative sliding movement of the telescoping members at the instant of a vehicle crash event. - View Dependent Claims (8, 9)
- the headrest assembly comprising;
Specification