Provided is a vehicle seat device that includes a headrest to support a head of an occupant seated on a vehicle seat. The vehicle seat device includes a rest operation adjustment mechanism provided on the headrest and to restrict or allow movement of the head of the occupant seated on the vehicle seat and a controller that controls the rest operation adjustment mechanism to allow the movement of the head of the occupant when a frequency of a vibration in a width direction of a vehicle is equal to or larger than a predetermined value.

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.

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 vehicle seat attachable to a vehicle body, the vehicle seat including: a seat back; and a headrest configured to support a head of a seated occupant, the headrest including: a base portion fixed to the seat back; a slide portion slidable in a left-right direction in a state where the head is supported to the base portion; and an electric mechanism configured to slide the slide portion in the left-right direction, and in which the slide portion is configured to be moved by the electric mechanism in a moving direction in which the head moves in the left-right direction due to acceleration in the left-right direction applied when a vehicle moves, the electric mechanism being operated by a control device disposed in the vehicle body in response to a signal from a sensor disposed in the vehicle body, the sensor being configured to detect the moving direction.

A vehicle seat attachable to a vehicle body, the vehicle seat including: a seat back; and a headrest configured to support a head of a seated occupant, the headrest including: a base portion fixed to the seat back; a slide portion slidable in a left-right direction in a state where the head is supported to the base portion; and an electric mechanism configured to slide the slide portion in the left-right direction, and in which the slide portion is configured to be moved by the electric mechanism in a moving direction in which the head moves in the left-right direction due to acceleration in the left-right direction applied when a vehicle moves, the electric mechanism being operated by a control device disposed in the vehicle body in response to a signal from a sensor disposed in the vehicle body, the sensor being configured to detect the moving direction.

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.

The invention relates to a vehicle seat having a seat part and a backrest part comprising a first backrest portion and a second backrest portion arranged above it in the seat height direction, wherein the second backrest portion is displaceable relative to the first backrest portion by means of a displacement movement directed at least in the seat width direction, wherein in a first displaced position of the second backrest portion a mechanical interaction is formed between the first backrest portion and the second backrest portion, which secures the first displaced position of the second backrest portion and which can be released by means of a force exerted on the second backrest portion and acting in the direction of the displacement movement.

The invention relates to a vehicle seat having a seat part and a backrest part comprising a first backrest portion and a second backrest portion arranged above it in the seat height direction, wherein the second backrest portion is displaceable relative to the first backrest portion by means of a displacement movement directed at least in the seat width direction, wherein in a first displaced position of the second backrest portion a mechanical interaction is formed between the first backrest portion and the second backrest portion, which secures the first displaced position of the second backrest portion and which can be released by means of a force exerted on the second backrest portion and acting in the direction of the displacement movement.

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 seat back assembly and method of manufacture is provided. The seat back includes a foam cushion layer. A support sub-assembly is formed including a rigid support layer with a plurality of cavities and channels defined on a rear surface for receiving components and a generally smooth front surface. At least one component is retained in one of the cavities and a second component is secured on the front surface of the support layer. A trim material covers the cushion layer and secures the sub-assembly to the seat back.