The disclosure relates to a lumbar support assembly, wherein the inclination of a mat is controlled by upward and downward movement of a single nut, thereby making it possible to reducing weight and manufacturing cost of the assembly.

According to one embodiment of disclosed herein, a lumbar support assembly includes: a mat having opposite sides that are rotatably connected to opposite sides of a seat frame, respectively; a driving unit coupled to the mat, and including a nut that is configured to be moved upward and downward; and a tension unit having first and second sides that are respectively coupled to the first and second sides of the seat frame, and coupled to the nut while surrounding a rear portion of the mat, wherein the nut allows the mat to be moved frontward or rearward by pulling or loosening the tension unit according to direction of movement.

A seating assembly includes a seatback. The seatback includes a frame extending about a periphery of the seatback. The seatback defines a thoracic region and a lumbar region. First and second supports extend from a top portion of the frame to a lower portion of the frame. A first flexible mat and a second flexible mat are operably coupled with the first and second supports. The first flexible mat is disposed proximate the thoracic region. The second flexible mat is disposed proximate the lumbar region.

A vehicle seating assembly includes a frame and an articulating flexmat assembly operably coupled with the frame. The articulating flexmat assembly includes an upper flexmat extending from a first side of the frame to a second side of the frame and a lower flexmat extending from the first side of the frame to the second side of the frame. The upper flexmat includes an upper static portion and an upper dynamic portion disposed above the upper static portion and adjustable by upper linear actuators that draw the upper dynamic portion toward the upper static portion to arc the upper flexmat outward. The lower flexmat includes a lower static portion adjacent to the upper static portion and a lower dynamic portion disposed below the lower static portion and adjustable by lower linear actuators that draw the lower dynamic portion toward the lower static portion to arc the lower flexmat outward.

It is provided an adjusting device of a lumbar support or a side-bolster adjuster for changing the contour or position of a seat element of a vehicle seat supporting a body part of a seat user, with at least one driving device comprising a spindle drive and at least one adjustable support element for changing the contour or position of the seat element, wherein the spindle drive comprises a spindle extending along a spindle axis, which on a fastening part of the lumbar support or the side-bolster adjuster mounted in the vehicle seat is floatingly mounted at a spindle end via a spindle holder such that at this spindle end the spindle is displaceable along at least one spatial direction extending transversely to the spindle axis.

The present invention relates to a vehicle sheet with a seat back which is provided with a urethane pad covered with a trim cover, and a pressing unit on the reverse side of the urethane pad covered with the trim cover, the pressing unit being formed with a shaft extending laterally and a pair of pressure portions arranged in the vertical direction with respect to the shaft to support both the upper and lower sides of the urethane pad by detecting the intermediate position of turning movement of the pressing unit by means of a turning movement detection unit and stopping the turning movement of the pressing unit, or is configured to press forward the upper side of the urethane pad using the upper pressure portion or the lower side of the urethane pad using the lower pressure portion by turning the laterally-extending shaft of the pressing unit.

A vehicle seating assembly includes a frame and an articulating flexmat assembly operably coupled with the frame. The articulating flexmat assembly includes an upper flexmat extending from a first side of the frame to a second side of the frame and a lower flexmat extending from the first side of the frame to the second side of the frame. The upper flexmat includes an upper static portion and an upper dynamic portion disposed above the upper static portion and adjustable by upper linear actuators that draw the upper dynamic portion toward the upper static portion to arc the upper flexmat outward. The lower flexmat includes a lower static portion adjacent to the upper static portion and a lower dynamic portion disposed below the lower static portion and adjustable by lower linear actuators that draw the lower dynamic portion toward the lower static portion to arc the lower flexmat outward.

A vehicle seating assembly includes a seat carrier defining a central opening. A seatback is pivotally coupled to the seat carrier. A seat flexmat is disposed in the central opening and operable between flexed and unflexed conditions. The vehicle seating assembly also includes a first thigh extension that is extendable and rotatable relative to the seat carrier and a second thigh extension that is extendable and rotatable relative to the seat carrier. The first thigh extension includes a first thigh flexmat operable between flexed and unflexed conditions. The second thigh extension includes a second thigh flexmat operable between flexed and unflexed conditions.

An occupant posture adjusting device includes: a plate-shaped bottom support member pivotably supported by a seat cushion via a pivot shaft extending laterally at a position directly under a hip point of a seated occupant to support at least thighs of the occupant from below; a plate-shaped lower part support member pivotably supported by a seat back via a pivot shaft extending laterally at a position lower than an intermediate portion of the seat back to support at least a pelvis of the occupant; a plate-shaped upper part support member pivotably supported by the seat back via a pivot shaft extending laterally at a position higher than the intermediate portion to support at least scapulae of the occupant; first to third drive devices configured to drive the bottom support member, lower part support member, and upper part support member, respectively; and a control device configured to control the drive devices.

A seating assembly includes a seatback. The seatback includes a frame extending about a periphery of the seatback. The seatback defines a thoracic region and a lumbar region. First and second supports extend from a top portion of the frame to a lower portion of the frame. A first flexible mat and a second flexible mat are operably coupled with the first and second supports. The first flexible mat is disposed proximate the thoracic region. The second flexible mat is disposed proximate the lumbar region.

A car seat lumbar support unit performs an elevating operation of an upper bracket relative to a lower bracket which determines a degree of curvature of a seat back by using a first motor, a first transfer screw, and a first nut member (first elevating unit) that are easily designed and manufactured, and performs an elevating operation of the lower bracket and the upper bracket which determines a curved position of the seat back by using a second motor, a second transfer screw, and a second nut member (second elevating unit), wherein a rotary cylinder is organically coupled so that the first elevating unit and the second elevating unit are independently operable without being restricted by each other.