Provided is a conveyance seat including a pelvis support member of which a state or the like is adjusted. The conveyance seat includes the pelvis support member configured to support a portion of an occupant's body where a pelvis is positioned and lumbar supports configured to move the pelvis support member. The pelvis support member includes a seat back side support portion positioned behind a back portion of the occupant, a seat cushion side support portion positioned below buttocks of the occupant, and a connection portion that connects the seat back side support portion and the seat cushion side support portion. The lumbar supports are configured to move the pelvis support member so that a position of at least one of the seat back side support portion, the seat cushion side support portion, and the connection portion is changed with respect to the portion where the pelvis is positioned.

A raisable seat for a vehicle, comprising a frame for a seating portion, a rail, a raising mechanism suitable for moving the seating portion frame relative to the rail between a lowered position and a raised position, said raising mechanism comprising on each side of the seat at least one connecting rod, said connecting rod having a rod body with an upper end connected to the frame and a lower end connected to the rail, at least one connecting rod also comprising a protuberance extending from the lower end, the protuberance extending facing the rail, said connecting rod being adapted to deform, in the event of an impact, between a first state in which a gap separates the rail and the protuberance regardless of the position of the seating portion frame between the lowered position and the raised position, and a second state in which the protuberance is in contact at least locally with the rail.

An assembly includes a seat bottom, a rear bladder, a front bladder, and a check valve. The seat bottom includes a rear seat cushion and a front seat cushion in a seat-forward direction from the rear seat cushion. At least one of the rear seat cushion or the front seat cushion is vertically movable relative to the other one of the rear seat cushion or the front seat cushion. The rear bladder supports the rear seat cushion. The front bladder supports the front seat cushion. The check valve fluidly connects the front bladder and the rear bladder. The check valve is oriented to permit fluid to pass from the rear bladder to the front bladder and block fluid from passing from the front bladder to the rear bladder.

A seating assembly includes a seat. A seatback is rotatably coupled with the seat to a fully reclined position. A rear seat lift device includes a mechanism disposed below a cushion support proximate a rear portion of the seat and is operable between a lowered position and a raised position. A rear portion of the seat is elevated relative to the seatback to minimize a height difference between the rear portion of the seat and a bottom portion of the seatback when the seatback is in the fully reclined position.

A seating assembly includes a seat. A seatback is rotatably coupled with the seat to a fully reclined position. A rear seat lift device includes a mechanism disposed below a cushion support proximate a rear portion of the seat and is operable between a lowered position and a raised position. A rear portion of the seat is elevated relative to the seatback to minimize a height difference between the rear portion of the seat and a bottom portion of the seatback when the seatback is in the fully reclined position.

Provided is a conveyance seat including a pelvis support member of which a state or the like is adjusted. The conveyance seat includes the pelvis support member configured to support a portion of an occupant's body where a pelvis is positioned and lumbar supports configured to move the pelvis support member. The pelvis support member includes a seat back side support portion positioned behind a back portion of the occupant, a seat cushion side support portion positioned below buttocks of the occupant, and a connection portion that connects the seat back side support portion and the seat cushion side support portion. The lumbar supports are configured to move the pelvis support member so that a position of at least one of the seat back side support portion, the seat cushion side support portion, and the connection portion is changed with respect to the portion where the pelvis is positioned.

A seat assembly forming a substantially horizontal plane for an exposed surface of each of a lower seat cushion and a seatback cushion of a seatback comprises a lifter mechanism for a rearward edge of the lower seat cushion. The lifter mechanism comprises a bracket pivotable about a transverse bar fixedly mounted to a frame assembly for a lower seat assembly, the bracket comprising a forward lever and a rearward lever; and a link pinned at a first end to the seatback and pinned at a second end to the rearward lever by a slot. The rearward edge of the lower seat cushion is initially raised by the forward lever upon the seatback pivoting to a predetermined reclined position and the rearward edge of the lower seat cushion is raised to the substantially horizontal plane upon the seatback pivoting to a fully reclined position.

A sliding bearing in which generation of looseness is avoided in a frame and friction resistance between the frame multi-layer sliding bearing and a frame rotation shaft is decreased to reduce a power load at the time of adjusting a relative position and a posture by a motor or a manual operation, includes: a bearing inner peripheral surface formed by a resin layer that has a projected and recessed shape including projected contact portions to be brought into contact with a frame rotation shaft, and recessed non-contact portions to be not brought into contact with the frame rotation shaft but to form clearances.

A seat device for a vehicle, in particular a tilting vehicle, includes at least one cushion body which forms a seat surface on a side facing a user of the vehicle; at least one transmission body which is disposed or formed on the cushion body on the side of the cushion body facing away from the seat surface and which extends away from the cushion body; at least one rigid seat shell which is disposed on a side of the cushion body facing away from the seat surface and can be fastened to a support structure of the vehicle and has at least one recess, in which at least the transmission body can be or is disposed; and at least one adjustment unit which is disposed between the cushion body and the seat shell and has at least one tensioning element. The tensioning element is disposed in the recess in the seat shell between the cushion body and the seat shell and can be transferred from a relaxed initial position, in which the depth of insertion of the transmission body into the recess in the seat shell is maximal, into at least one loaded functional position, in which the transmission body is displaced by the tensioning element into a position in which the depth of insertion of the transmission body in the recess of the seat shell is reduced in comparison with the initial position.

A raisable seat for a vehicle, comprising a frame for a seating portion, a rail, a raising mechanism suitable for moving the seating portion frame relative to the rail between a lowered position and a raised position, said raising mechanism comprising on each side of the seat at least one connecting rod, said connecting rod having a rod body with an upper end connected to the frame and a lower end connected to the rail, at least one connecting rod also comprising a protuberance extending from the lower end, the protuberance extending facing the rail, said connecting rod being adapted to deform, in the event of an impact, between a first state in which a gap separates the rail and the protuberance regardless of the position of the seating portion frame between the lowered position and the raised position, and a second state in which the protuberance is in contact at least locally with the rail.