A function-adapted three-dimensional foam structure (2) for a vehicle seat (4) has first foam structure planes (6) to ensure a constant compressive strength of the foam structure (2) in two spatial directions x, y, second foam structure planes (8) to ensure a length variance of the foam structure (2) in a spatial direction z, that is perpendicular to the spatial directions x and y. The first foam structure planes (6) and the second foam structure planes (8) are formed and distributed within the foam structure (2) such that the compressive strength of the foam structure (2) is constant in the spatial directions x, y independent of the length-wise expansion of the foam structure (2) in the spatial direction z.

A function-adapted three-dimensional foam structure (2) for a vehicle seat (4) has first foam structure planes (6) to ensure a constant compressive strength of the foam structure (2) in two spatial directions x, y, second foam structure planes (8) to ensure a length variance of the foam structure (2) in a spatial direction z, that is perpendicular to the spatial directions x and y. The first foam structure planes (6) and the second foam structure planes (8) are formed and distributed within the foam structure (2) such that the compressive strength of the foam structure (2) is constant in the spatial directions x, y independent of the length-wise expansion of the foam structure (2) in the spatial direction z.

Travel sleeping aids for assisting a seated traveler to sleep in a forward leaning seated position toward a passenger seat in front of the seated traveler, the passenger seat having a headrest. In one implementation, a travel sleeping aid includes a U-shaped head support having a face contoured aperture for supporting the seated traveler's head in a forward leaning seated position and a support structure rotatable with respect to the U-shaped head support between a storage position flush with the U-shaped head support and a head support position generally perpendicular to the U-shaped head support. In another embodiment, a hanging travel sleeping aid includes a generally rectangular shaped head support having a passenger seat headrest pocket for being snugly placed on a passenger seat's headrest in front of a seated traveler and a head support panel for supporting the seated traveler's head in his forward leaning seated position.

Travel sleeping aids for assisting a seated traveler to sleep in a forward leaning seated position toward a passenger seat in front of the seated traveler, the passenger seat having a headrest. In one implementation, a travel sleeping aid includes a U-shaped head support having a face contoured aperture for supporting the seated traveler's head in a forward leaning seated position and a support structure rotatable with respect to the U-shaped head support between a storage position flush with the U-shaped head support and a head support position generally perpendicular to the U-shaped head support. In another embodiment, a hanging travel sleeping aid includes a generally rectangular shaped head support having a passenger seat headrest pocket for being snugly placed on a passenger seat's headrest in front of a seated traveler and a head support panel for supporting the seated traveler's head in his forward leaning seated position.

A device for sliding a headrest towards the front direction includes a ratchet and a release lever installed in a side link which is a movable part. A release protrusion is formed in the ratchet and disposed almost in parallel with the hinge shaft of the ratchet. The release protrusion of the ratchet is pushed up to release the locking so that the headrest is returned to its original position.

A headrest assembly according to an exemplary aspect of the present disclosure includes a head restraint configured to rotate from a first locked position to a second locked position to incline the head restraint relative to a seat back. Further, the head restraint is configured such that rotation of the head restraint beyond the second locked position causes the head restraint to become urged back to the first locked position. The head restraint includes a ratchet assembly having a pawl and pawl spring, and the pawl spring includes a first section and a second section. The first section of the pawl spring is configured to contact the pawl when the head restraint is rotated from the first locked position to the second locked position, and the second section of the pawl spring is configured to contact the pawl when the head restraint is rotated beyond the second locked position.

A headrest assembly according to an exemplary aspect of the present disclosure includes a head restraint configured to rotate from a first locked position to a second locked position to incline the head restraint relative to a seat back. Further, the head restraint is configured such that rotation of the head restraint beyond the second locked position causes the head restraint to become urged back to the first locked position. The head restraint includes a ratchet assembly having a pawl and pawl spring, and the pawl spring includes a first section and a second section. The first section of the pawl spring is configured to contact the pawl when the head restraint is rotated from the first locked position to the second locked position, and the second section of the pawl spring is configured to contact the pawl when the head restraint is rotated beyond the second locked position.

A headrest assembly includes upright supports that are partially disposed within a rear housing and interconnected to one another by a vertically adjustable guide bracket. A mounting plate is operably coupled to the guide bracket by a driveshaft of a first motor for driving horizontal movement of the mounting plate. A headrest bun is pivotally coupled to the mounting plate for rotating movement between upright and angled positions. A second motor is mounted to at least one of the upright supports and includes a vertical driveshaft coupled to the guide bracket for driving vertical movement of the guide bracket. The headrest bun includes first and second side bolsters that are pivotally coupled to a central support member between extended and retracted positions. The headrest assembly may further include an air moving device to provide ventilation or a heating feature to a user of the headrest assembly.

A headrest assembly according to an exemplary aspect of the present disclosure includes a head restraint configured to rotate from a first locked position to a second locked position to incline the head restraint relative to a seat back. Further, the head restraint is configured such that rotation of the head restraint beyond the second locked position causes the head restraint to become urged back to the first locked position. The head restraint includes a ratchet assembly having a pawl and pawl spring, and the pawl spring includes a first section and a second section. The first section of the pawl spring is configured to contact the pawl when the head restraint is rotated from the first locked position to the second locked position, and the second section of the pawl spring is configured to contact the pawl when the head restraint is rotated beyond the second locked position.

A headrest assembly according to an exemplary aspect of the present disclosure includes a head restraint configured to rotate from a first locked position to a second locked position to incline the head restraint relative to a seat back. Further, the head restraint is configured such that rotation of the head restraint beyond the second locked position causes the head restraint to become urged back to the first locked position. The head restraint includes a ratchet assembly having a pawl and pawl spring, and the pawl spring includes a first section and a second section. The first section of the pawl spring is configured to contact the pawl when the head restraint is rotated from the first locked position to the second locked position, and the second section of the pawl spring is configured to contact the pawl when the head restraint is rotated beyond the second locked position.