A pneumatically adjustable seat includes a seat frame having a seat back frame portion and a headrest coupled to the seat back frame portion. The headrest includes a resilient cushion. A drive assembly includes a contact member operatively associated with the resilient cushion. A first bladder is operatively coupled to the contact member and in fluid communication with a source of pressurized fluid. Inflation of the first bladder via the source of pressurized fluid extends the contact member from a first position nearer the seat back frame to a second position further from the seat back frame. A second bladder is operatively coupled to the contact member and in fluid communication with the source of pressurized fluid. Inflation of the second bladder via the source of pressurized fluid pivots the contact member away from an occupant of the seat.

A backrest may have a seat back structure and a carrier module for a headrest. The carrier module may have at least one carrier element arranged on an upper portion of the seat back structure and fixedly connected to the seat back structure. The carrier module may also have at least one supporting element adapted to support the carrier element. The at least one carrier element may have a receiving space configured to receive the headrest and a fixing structure projected towards into the receiving space and adapted to detachably fasten the supporting element to the carrier element. The backrest may be used with a seat.

A backrest may have a seat back structure and a carrier module for a headrest. The carrier module may have at least one carrier element arranged on an upper portion of the seat back structure and fixedly connected to the seat back structure. The carrier module may also have at least one supporting element adapted to support the carrier element. The at least one carrier element may have a receiving space configured to receive the headrest and a fixing structure projected towards into the receiving space and adapted to detachably fasten the supporting element to the carrier element. The backrest may be used with a seat.

A headrest support having a hollow cylindrical shape and into which a headrest stay is inserted, is inserted into a bracket that has a hollow cylindrical shape and is fixed to a seat back frame. A protrusion, a tip end of which is a pivot center of the headrest support, formed such that a protrusion amount thereof increases in response to insertion of the headrest stay, is provided on an outer peripheral surface of this headrest support.

A headrest structure for a passenger seat, a headrest cushion and passenger seat. The headrest structure comprises an adjustable headrest frame for connection to a passenger seat; and a headrest cushion mounted to the adjustable headrest frame such that the headrest cushion is moveable relative to a seat back of the passenger seat by way of the adjustable headrest frame; wherein the headrest cushion comprises a support surface facing away from the headrest frame, the support surface comprising a concave upper part and a convex bottom part relative to the passenger seat.

A bearing including an annular substrate defining a first and a second opposite axial ends; and a plurality of sliding components attached to and extending radially from the annular substrate, each sliding component extending at least partially between the first and second opposite axial ends of the annular substrate. A head restraint assembly including a head restraint having a body and a first and second post extending from the body; a first guide sleeve having a first bearing for receiving the first post; and a second guide sleeve having a second bearing for receiving the second post.

A headrest adjusting bracket surrounds posts from the headrest. A screw displaces one side of the bracket to apply a frictional force to the headrest posts. Protrusions on the interior surface of the bracket, proximal to each post, increases the surface area contact between the bracket and the posts when the screw is tightened.

A vehicle seat includes a seat back frame. The vehicle seat includes a suspension mat disposed within the seat back frame. The vehicle seat includes a linking member that elastically supports the suspension mat at the seat back frame. The vehicle seat includes a bushing that is disposed at an upper portion of the seat back frame. The vehicle seat includes a hollow stay inserted into the bushing, the stay protruding upward from the upper portion of the seat back frame. The vehicle seat includes a headrest fixed at an upper end of the stay. An upper end of the linking member is inserted into the stay from a lower end of the stay that is inserted into the bushing.

A headrest assembly is removeably supported on a vehicle seat having a seatback with a seatback frame. The headrest assembly includes a headrest bun operably coupled to a housing via a powered linkage system for driving the headrest bun between extended and retracted positions. A temperature control system is disposed in the housing and configured to provide treated air to a conditioning area disposed below the headrest bun at a vehicle occupant's neck. The temperature control system includes a blower operably coupled to duct assembly for blowing air treated by a thermoelectric module along the duct assembly. One or more vents are disposed at a downward angle on a front portion of the housing. The one or more vents are operably coupled to and in communication with the duct assembly.

The vehicle seat includes: an adjustment position selecting means for selecting an adjustment position of each part of the seat corresponding to the build of the occupant; a seat position adjusting means for the occupant to manually adjust a position of each part of the seat; and a seat position detecting means for detecting a position of each part of the seat. Build information selected with the adjustment position selecting means and positional information detected with the seat position detecting means are transmitted to an electronic control unit provided in the vehicle by wireless communication or wired communication. In the electronic control unit, proper positional information of each part of the seat estimated based on the build information and the positional information are checked against each other. When both pieces of information agree with each other, the occupant is notified of the agreement through a notifying means.