Rigidity is improved at a part where side frame pieces overlap each other in a side frame. In a vehicle seat provided with a seat back frame, a side frame 10 of the seat back frame has a first side frame piece 20 and a second side frame piece 30 partially overlapping each other in a direction of extension of the side frame 10. The side frame 10 has an overlapping part 40 where both the first side frame piece 20 and the second side frame piece 30 overlap each other. At the overlapping part 40, the side frame pieces overlap each other in a state where a plurality of closed regions 41 and 42 closed by being surrounded by both side frame pieces are formed in a cross section of the overlapping part 40 intersecting with the direction of extension of the side frame 10.

An occupant support adapted for use in a vehicle includes a seat bottom coupled to a floor of the vehicle and a seat back configured to pivot about a seat-back pivot axis relative to the seat bottom between an upright position and a folded-forward position. The occupant support further includes an upper-back support system configured to support an upper back of an occupant of the occupant support.

A seat back system for a vehicle includes a fixed seat support member fixed relative to the vehicle, a seat back frame pivotally mounted relative to the fixed seat support member, and a torsion spring element mounted to the seat back frame. The torsion spring element includes a first end fixed relative to the fixed seat support member and a second end fixed relative to the seat back frame.

A car seat includes an actuator capable of changing an orientation of a rest surface of a seat back laterally by turning and moving at least a side portion frame that is part of the car seat frontward and rearward, and a controller configured to exercise control over the actuator. The controller includes a run-time posture support unit configured to execute a run-time posture support control under which when a car makes a turn, the actuator is regulated to cause the rest surface of the seat back to be oriented in a direction of the turn. The run-time posture support unit is configured to regulate the actuator in accordance with a placement of the seat in the car, when the run-time posture support unit executes the run-time posture support control.

An adjustable seat for a vehicle including a first seat section configured to support a lower leg portion of the passenger when the passenger is sitting facing the first direction and a second seat section configured to support an upper leg portion of the passenger when the passenger is sitting facing the first direction and a torso and head portion of the passenger when the passenger is sitting facing the second direction. The adjustable seat also comprising a third seat section configured to support the torso and head portion of the passenger when the passenger is sitting facing the first direction and the upper leg portion of the passenger when the passenger is sitting facing the second direction. The adjustable seat also comprising a fourth seat section configured to support the lower leg portion of the passenger when the passenger is sitting facing the second direction.

Disclosed is a seat including: a seat back; a seat cushion; and a reclining device that couples the seat back to the seat cushion in a swingable manner in one and another directions, wherein the reclining device includes: a locking mechanism that locks and unlocks swinging movement of the seat back; a biasing member that biases the seat back in one direction so as to swing the seat back in the one direction when the locking mechanism is unlocked; and a switching mechanism that switches a biasing direction of the biasing member for the seat back to another direction in a middle of the swinging movement of the seat back.

A reversible seat assembly for use with an airplane. The reversible seat comprises a base assembly and a vertical assembly. The base assembly and the vertical assembly are connected to a support structure and are collectively disposable into and out of a first travel position, a second travel position, and a third travel position. In the first and second travel positions a user or passenger may assume a usual sitting position. In the third travel position the user may assume a reverse sitting position. The base assembly comprises a right segment and a left segment connected and rotationally movable to a central segment. The vertical assembly comprises a lower segment and an upper segment connected to and rotationally movable a middle segment. The reversible seat assembly may further comprise a back armrest connected to an opposite side of said middle segment and structure to provide support to the arms of the user.

A passenger seat (10) with a sitting area (40), a side ottoman (42), an open space (44) that may be enclosed via use of a bed extension (50), and a backrest (14). The backrest may be divided into an upper portion and a lower portion. The seat may also be provided with one or more storage areas and/or a side console.

An occupant support includes a seat bottom and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom in a normal-seating configuration. The seat back is pivotable relative to the seat bottom between a plurality of positions. The seat back may be changed from an upright position to a folded-forward position.

A vehicle seat is provided including a base section fixed to a floor of a vehicle, a pair of seat sections that are disposed opposing each other as viewed along a seat width direction, that are each supported by the base section so as to be capable of tilting between a horizontal position and an upright position, and that each include plural cushion sections disposed in series and configured to support the body of an occupant, and a hinge mechanism that attaches the pair of seat sections to the base section such that the seat sections are capable of tilting, and that couples the plural cushion sections together such that the cushion sections are capable of swinging about an axis running along the seat width direction.