Seat

A seat comprising a seat portion having an occupant supporting surface and a back portion having an occupant supporting surface and head rest assembly, the head rest assembly having a head rest portion and a side impact portion, the head rest assembly being secured or securable to the seat, and being movable towards and away from a seat portion of the seat, the side impact portion comprising a pair of peripheral elongate portions which are pivotable together about a common pivot axis and relative to the head rest portion between a first position wherein each peripheral elongate portion extends along the occupant supporting surface of the back portion of the seat toward the seat portion and a second or stowed position and wherein in said second or stowed position each peripheral elongate portion extends in a direction substantially parallel to a plane defined by the back portion and each peripheral elongate portion extends beyond the top of the head rest position, wherein the head rest assembly comprises means to allow the peripheral elongate portions to adopt sequential stable positions as the peripheral elongate portions move between the first and second positions.

A seat comprising a seat portion having an occupant supporting surface and a back portion having an occupant supporting surface and head rest assembly, the head rest assembly having a head rest portion and a side impact portion, the head rest assembly being secured or securable to the seat, and being movable towards and away from a seat portion of the seat, the side impact portion comprising a pair of peripheral elongate portions which are pivotable together about a common pivot axis and relative to the head rest portion between a first position wherein each peripheral elongate portion extends along the occupant supporting surface of the back portion of the seat toward the seat portion and a second or stowed position and wherein in said second or stowed position each peripheral elongate portion extends in a direction substantially parallel to a plane defined by the back portion and each peripheral elongate portion extends beyond the top of the head rest position, wherein the pivot axis is provided by a common hinge provided by a first abutment member of the side impact portion and a second abutment member of the head rest portion, wherein, during pivoting of the peripheral elongate members relative to the head rest portion, one or both of the abutment members is configured to at least partially deform.

A head rest assembly for a seat, the head rest assembly having a head rest portion and a side impact portion, the head rest assembly being securable to a seat to be movable towards and away from a seat portion of the seat, the side impact portion comprising a pair of peripheral elongate portions which are pivotable together about a common hinge and relative to the head rest portion between a first position wherein each peripheral elongate portion extends along the occupant supporting surface of the back portion of the seat toward the seat portion and a second or stowed position and wherein in said second or stowed position each peripheral elongate portion extends in a direction substantially parallel to a plane defined by the back portion and each peripheral elongate portion extends beyond the top of the head rest portion, the head rest assembly comprises means to allow the peripheral elongate portions to adopt sequential stable positions as the peripheral elongate portions move between the first and second positions.

A head rest assembly for a seat, the head rest assembly having a head rest portion and a side impact portion, the head rest assembly being securable to a seat to be movable towards and away from a seat portion of the seat, the side impact portion comprising a pair of peripheral elongate portions which are pivotable together about a common hinge and relative to the head rest portion from a first position to a second position and are able to adopt plural stable positions between the first and second positions, the assembly comprising a resiliently urged over-center mechanism configured for step-wise rotation of both of peripheral elongate portions between said plural stable positions.