A headrest may be fixed relative to a seat or a bank of seats in a vehicle and can provide multiple stages of deformation in response to a collision event. The headrest can include a resilient member that deforms in response to a first force caused by the collision event. The headrest can also include a frame that deforms in a first manner in response to a second force greater than the first force and in a second manner in response to a third force greater than the second force. Such a headrest can provide improved impact mitigation for occupants, regardless of height and/or weight such that occupants ranging from the 5.sup.th to 95.sup.th percentile in height and/or weight are afforded similar impact mitigation despite a fixed headrest structure. In some examples, multiple such headrests may be conjoined.

A headrest may be fixed relative to a seat or a bank of seats in a vehicle and can provide multiple stages of deformation in response to a collision event. The headrest can include a resilient member that deforms in response to a first force caused by the collision event. The headrest can also include a frame that deforms in a first manner in response to a second force greater than the first force and in a second manner in response to a third force greater than the second force. Such a headrest can provide improved impact mitigation for occupants, regardless of height and/or weight such that occupants ranging from the 5.sup.th to 95.sup.th percentile in height and/or weight are afforded similar impact mitigation despite a fixed headrest structure. In some examples, multiple such headrests may be conjoined.

The disclosure refers to a headrest for a seat. The headrest has at least a headrest cushion which is mountable to the seat. The headrest cushion may have an adjustment device configured to at least partially deform a front surface of the headrest cushion along at least one extending direction of the headrest cushion. Further, the disclosure relates to a seat with such a headrest.

A seat assembly with an adjustable head restraint assembly capable of being adjusted based on an approximate stature or spatial location of an occupant in the seat assembly. A seat assembly may include a sensor in the seat to detect if an occupant is present. The sensor may include a plurality of bladders and pressure sensors, a radar system, or a neuro-monitoring sensor. The sensor may send a signal to a controller indicating the presence of an occupant. The controller may approximate the size and/or spatial location of the occupant and send an adjustment signal to the head restraint adjustment mechanism to adjust the head restraint assembly to an in-use position. The controller may determine that an occupant is not present and send an adjustment signal to the head restraint adjustment mechanism to adjust the head restraint assembly to a non-use position.

An adjustment mechanism for a headrest for a seat has a scissor lever. The adjustment mechanism has at least one first lever arm and at least one second lever arm. A compensating lever arm is arranged at at least one lever arm end of each lever arm. A free end of each compensating lever arm has an attachment structure for attaching the compensating lever arm to a body. A lever arm end opposite the compensating lever arm of each lever arm has an attachment structure for attaching the lever arm to a body. A headrest for a vehicle seat, which has a headrest body is also provided.

An adjustment mechanism for a headrest for a seat has a scissor lever. The adjustment mechanism has at least one first lever arm and at least one second lever arm. A compensating lever arm is arranged at at least one lever arm end of each lever arm. A free end of each compensating lever arm has an attachment structure for attaching the compensating lever arm to a body. A lever arm end opposite the compensating lever arm of each lever arm has an attachment structure for attaching the lever arm to a body. A headrest for a vehicle seat, which has a headrest body is also provided.

A rear-center head restraint system for an automobile vehicle includes a rear seatback of an automobile vehicle. A head restraint assembly is mounted on the rear seatback and is moved between a stowed position and a deployed position. The head restraint assembly includes a forward head restraint portion displaced from the stowed position in an upward direction and in a forward direction with respect to the rear seatback. A rear head restraint portion is positioned rearward of the forward head restraint portion and is displaced in the upward direction as the forward head restraint portion displaces away from the stowed position. At least one headrest post is fixedly positioned within the rear seat back. A release mechanism connected to the at least one headrest post is operated to release the head restraint assembly from the stowed position.

A headrest position adjusting device for a vehicle, may include a first motor mounted to a seatback frame; a first link connected to the first motor to be rotatable to a predetermined first angle in a leftward-rightward direction; a second motor mounted to the first link; a second link connected to the second motor to be rotatable to a predetermined angle in an upward-downward direction; a third motor mounted to the second link; a third link connected to the third motor to be rotatable with respect to a rotation axis of the third motor; and a headrest frame connected to the third link and mounted in a headrest pad.

A method of assembling a vehicle seat is provided, comprising: providing a seat back frame; forwardly movably connecting a headrest for supporting a head of a seat occupant to the seat back frame; mounting a rear-end collision detector to the seat back frame at a position behind the seat occupant, operatively connecting the rear-end collision detector to the headrest; disposing a link member at a position lateral to the rear-end collision detector; forming a front extending portion that inwardly extends in a right-to-left direction at a front end of a lateral face of the side frame; and forming a rear extending portion that inwardly extends in the right-to-left direction; wherein a protruding portion is formed from a portion of the lateral face of the side frame that faces at least the part of the bracket, the link support shaft being disposed at a same height as the protruding portion.

A method of assembling a vehicle seat is provided, comprising: providing a seat back frame; forwardly movably connecting a headrest for supporting a head of a seat occupant to the seat back frame; mounting a rear-end collision detector to the seat back frame at a position behind the seat occupant, operatively connecting the rear-end collision detector to the headrest; disposing a link member at a position lateral to the rear-end collision detector; forming a front extending portion that inwardly extends in a right-to-left direction at a front end of a lateral face of the side frame; and forming a rear extending portion that inwardly extends in the right-to-left direction; wherein a protruding portion is formed from a portion of the lateral face of the side frame that faces at least the part of the bracket, the link support shaft being disposed at a same height as the protruding portion.