A seat backrest includes right and left side frame segments, a pressure receiving member disposed between the side frame segments movably in a front-back direction, and a cushion pad covering the front of the side frame segments and pressure receiving member. The pressure receiving member includes a main body part, and extending parts extending laterally from both sides of the main body part. The cushion pad includes a back receiving part covering the front of the main body part, and bank parts disposed on both sides of the back receiving part, protruding forward from both sides, and covering the front of the extending parts and side frame segments. A recess is formed at an area, facing a corresponding extending part of the extending parts, of a rear surface of each bank part.

A vehicle seat includes a seat back frame with an upper subframe pivot. A seat back subframe is pivotably connected to the seat back frame at the upper subframe pivot. An actuation assembly pivotably moves the seat back subframe relative to the seat back frame about the upper subframe pivot, between a seat back subframe design position and a subframe recline position. In the recline position a lower edge of the seat back subframe is positioned outwardly relative to the seat back frame with the seat back subframe pivoted to an angle relative to the seat back frame.

A back support structure includes a frame, a support, a fulcrum member, and an adjustment mechanism. The support includes an upright member having a lower end and an upper end. The lower end of the upright member is connected to the frame at a first location. A support pad is connected to the upper end of the upright member. The fulcrum member has an upper portion and a lower portion. The upper portion is connected to the frame at a second location spaced vertically above the first location. The fulcrum member includes a fulcrum engaging the upright member between the upper and lower ends. The fulcrum member is moveable between a plurality of fulcrum positions. The adjustment mechanism includes an adjustment member connected to the frame and the lower portion of the fulcrum member. The adjustment member is adjustable to move the fulcrum member to the plurality of fulcrum positions.

A seat system for a vehicle including a flexible seatback structure and an adjustment device coupled thereto. The adjustment device is configured to alter a contour of a seating surface of the seatback structure by causing at least a portion of the seatback structure to move toward or away from the occupant of the seat system.

A seat backrest includes right and left side frame segments, a pressure receiving member disposed between the side frame segments movably in a front-back direction, and a cushion pad covering the front of the side frame segments and pressure receiving member. The pressure receiving member includes a main body part, and extending parts extending laterally from both sides of the main body part. The cushion pad includes a back receiving part covering the front of the main body part, and bank parts disposed on both sides of the back receiving part, protruding forward from both sides, and covering the front of the extending parts and side frame segments. A recess is formed at an area, facing a corresponding extending part of the extending parts, of a rear surface of each bank part.

A vehicle seat provided with a seat cushion and a seat back, wherein the seat back is provided with: a urethane pad in which the surface is covered by a trim cover; and a pressure means in which a laterally extending shaft and a pair of pressing parts in the vertical direction relative to the shaft are formed on the reverse side of the urethane pad toward the side covered by the trim cover, and a configuration is adopted such that the shaft extending in the lateral direction of the pressure means rotates or swings, thereby causing the upper-side pressing part among the upper and lower pair of pressing parts to press the upper side of the urethane pad forward and the lower-side pressing part to press the lower side of the urethane pad forward.

An adjustable vehicle seat configured to support an occupant in a vehicle may include a seat cushion portion, a seat back portion including a backrest movable relative to the seat cushion portion, and a contour linkage linked to the seat cushion portion and the backrest. The contour linkage may be configured to impose force on the backrest upon movement of the seat cushion portion relative to the backrest in at least one of a fore/aft, vertical, and rotational direction. The backrest may be configured such that a backrest contour is altered based on force imposed by the contour linkage in response to movement of the seat cushion portion relative to the backrest. The backrest contour may include at least one of a contour angle of an occupant-side surface of the backrest, a maximum offset of the occupant-side surface, and vertical height of a contour apex.

Disclosed is a vehicle-mounted detachable lumbar support pillow structure capable of being adjusted upwards and downwards, including a car seat backrest, a sliding assembly, a connecting member and a car seat cushion, where the sliding assembly is embedded and mounted in the car seat backrest, the car seat cushion is mounted in front of the car seat backrest, and the connecting member is disposed between the sliding assembly and the car seat cushion; and one end of the connecting member is fixedly connected to the car seat cushion, and the other end of the connecting member is detachably connected to the sliding assembly.

A vehicle includes a vehicle seat comprising a seat base structure and a seat back structure pivotally connected to the seat base structure. The seat back structure includes a central adjustable region, an inboard side adjustable region adjacent the central adjustable region and a outboard side adjustable region located adjacent the central adjustable region. The seat back structure includes a central proximity sensor located at the central adjustable region, an inboard side proximity sensor located at the inboard side adjustable region and an outboard side proximity sensor located at the outboard side adjustable region. A seat back structure adjustment apparatus includes a central region adjustable member that adjusts a configuration of the central adjustable region, an inboard side adjustable member that adjusts a configuration of the inboard side adjustable region and an outboard side adjustable member that adjusts a configuration of the outboard adjustable region.

A lumbar support system for a seat backrest, the lumbar support system includes a carrier having a first end and a second end opposite the first end. The carrier is movable with respect to the seat backrest in a first direction and in a second direction opposite the first direction. The lumbar support system further includes a first bladder coupled to the first end of the carrier, a second bladder coupled to the second end of the carrier, and a third bladder coupled to the carrier. The third bladder has a contact surface and is configured to move with the carrier. The first bladder is inflatable to move the carrier in the first direction, and the second bladder is inflatable to move the carrier in the second direction. The third bladder is inflatable such that the contact surface is extendable in a third direction.