A split rear backrest is arranged between two side panels of a motor vehicle and has two backrests, which are provided with respective lower portions arranged side by side along a horizontal axis and are rotatable independently of each other about said horizontal axis; moreover, the backrest has a shaft, whose ends define respective fastening elements for being coupled to the side panels; the shaft has a segment axially protruding from one of the backrests and rotationally engaging a seat axially formed in the other backrest.

Vehicle seat including: a seat back pivoted to a side of floor; a seat cushion pivoted to the seat back; and a front leg element having an upper end pivoted to the seat cushion and a lower end pivotally locked to the side of floor in a releasable manner, thus normally providing a four-pivotal-point linkage in the seat. Maintaining the four-pivotal-point linkage adversely restricts design and actions of the seat. Inequality conditions are therefore set in that four-pivotal-point linkage, such that folding down the seat back by an angle exceeding a predetermined angle results in unlocking of the lower end of the front leg element from the side of floor, thereby destroying the four-pivotal-point linkage. Hence, a freedom of design is increased for the seat and floor. Further, leverage mechanism(s) may be provided to facilitate the ease of unlocking the front leg element from the side of floor.

A vehicle seat including: a tilt down mechanism configured to sink down a seat cushion in conjunction with forward tilting down movement of a seat back; and a link member coupled between the seat back and the seat cushion, wherein the link member is coupled to be slidable relative to either of the seat back and the seat cushion so that, when the seat back is moved within a region in which the seat back is raised from a forward tilted down position, the link member transmits power from the seat back to the seat cushion to pull up the seat cushion, and when the seat back is tilted within an adjustment region of a backrest angle of the seat back, the link member releases the transmission of the power from the seat back to the seat cushion.

A device of folding a seat for a vehicle may include a seat cushion disposed on a bottom of a vehicle body and rotatable by a rotation mechanism and provided with a first position fixing mechanism, a seat back rotatably disposed at a rear of the seat cushion and provided with a second position fixing mechanism, a headrest rotatably disposed at an upper portion of the seat back and fixed in position by a third position fixing mechanism disposed in the seat back, and an operation mechanism disposed in the seat back and unlocking the first position fixing mechanism to unlock the second position fixing mechanism and the third position fixing mechanism at a time of rotating the seat cushion so as to rotate the seat back and the headrest.

A vehicle seat including: a tilt down mechanism configured to sink down a seat cushion in conjunction with forward tilting down movement of a seat back, wherein the tilt down mechanism couples a rear part of the seat cushion to a base on a floor by a rotary shaft, couples a front part of the seat cushion to the base via a front link, and further includes a power transmission member that couples the front link and the seat back, and wherein the power transmission member is configured by a link member of a rigid body and is configured to, when the seat back is raised from a forward tilted down position, transmit the movement of the seat back to the front link to raise the front link to thus pull up the seat cushion from a downward sunk position.

A seat assembly for a vehicle including a base presenting a pair of opposing angular surfaces spaced from one another and a cushion slidably engaging the opposing angular surfaces for tilting relative to the base into alternate orientations. The seat also includes a resistance element for maintaining the cushion in a desired orientation relative to the base. The cushion includes a sliding element which is movable between a disengaged position for adjusting the orientation of the cushion within predetermined limits established by the angular surfaces and an engaged position where the sliding element interfaces with the resistance element to restrict movement of the cushion relative to the base.

In a vehicular seat device (20), a right seat (24) is movably supported via a right slide rail (21). The right seat is provided with a seat back (61) mounted to a movable base (31) of the right slide rail, a seat cushion (69) rotatably mounted to the seat back, and a connecting link (81) rotatably supporting a front portion (69a) of the seat cushion on the movable base. The connecting link includes a leg link portion (84) detachably supported on the movable base. The right seat when folded in a storage mode is movable to a storage position (13) of a lower floor (12).

A seat having a fixed section, a movable section mounted so as to slide on the fixed section, a seating portion supported by the movable section, and a backrest mounted so as to rotate relative to the movable section to allow folding the backrest forward. The movable section is controlled to move rearward when the backrest is folded forward.

A vehicle seat includes a sealed inflation system having first and second inflation bladders interconnected by first and second supply lines for exchanging an inflation medium therebetween. Each inflation bladder includes one or more outwardly extending pilot stems. A first valve assembly is operably coupled to the pilot stems and first the supply line. Compression of the second inflation bladder opens the first valve assembly, and compression of the first inflation bladder closes the first valve assembly. A second valve assembly is disposed on the second supply and is configured to open and close as a seatback of the vehicle seat moves from a folded position to an upright position. The first and second valve assemblies are external components to the sealed inflation system.

A vehicle seat in which a forward tilting of a frame causes a turning of a walk-in member, the turning of the walk-in member causes a turning of a disengagement member, the turning of the disengagement member causes a turning of a tip-up locking member thereby disengaged from a stopper member, and then a cushion frame is tipped up by a rotational biasing force applied by a biasing unit.