Abstract: An actuator system for controlling a lumbar support includes a wire fixed and coupled with a lumbar support at one end; a driving motor rotatable in either the clockwise or counterclockwise direction; a worm coupled with the driving shaft of a driving motor; a deceleration part having a worm gear and a screw which decelerates the power of the driving motor; a slider connected to the other end of the wire, and having a protrusion portion and a spiral groove so as to carry out rectilinear reciprocating motion according to the rotation direction of the driving motor; and a housing inserted by the slider and having a wire-passing hole, a connection hole, a mounting hole and a guide hole, wherein the bending degree of a lumbar support may be automatically controlled by rotation driving force applied in a set range, thereby providing riding comfort to passengers.

Abstract: An actuator system for controlling a lumbar support includes a wire fixed and coupled with a lumbar support at one end; a driving motor rotatable in either the clockwise or counterclockwise direction; a worm coupled with the driving shaft of a driving motor; a deceleration part having a worm gear and a screw which decelerates the power of the driving motor; a slider connected to the other end of the wire, and having a protrusion portion and a spiral groove so as to carry out rectilinear reciprocating motion according to the rotation direction of the driving motor; and a housing inserted by the slider and having a wire-passing hole, a connection hole, a mounting hole and a guide hole, wherein the bending degree of a lumbar support may be automatically controlled by rotation driving force applied in a set range, thereby providing riding comfort to passengers.

Abstract: The present invention relates to a height control unit of a headrest for a vehicle seat, in which the height of the headrest may be simply controlled by the driving force of an electric motor.

Abstract: The present invention relates to a height control unit of a headrest for a vehicle seat, in which the height of the headrest may be simply controlled by the driving force of an electric motor. The height control unit of a headrest for a seat of a vehicle includes a bracket fixed to an inner frame of a seat back, a motor fixed on a side of the bracket, a lead screw axially supported at a lower end by a stopper plate so as to be driven forward or backward towards a lower part of the bracket via a reduction gear box by the motor, lifting rods standing on both sides between the bracket and the stopper plate, and a carrier screw-coupled with the lead screw to be lifted or lowered by the guide of the lifting rods and having pockets opened upward at both sides so as to receive poles of the headrest.

Abstract: A lumbar support for a car seat according to the present invention comprises a pair of coupling elements, respectively coupled with traverse fixing bars provided in internal upper and lower parts of a seat back; a pair of support plates provided on right and left sides between a pair of the coupling elements and respectively having a plurality of support wings; a support element including a sacrospinal muscle base at a lower part thereof; and a supporting height control element provided on one side of the support plate to alternatively control a protrusion height of the support plates; wherein the support element further includes a lumbar vertebra base integrally formed in an upper part of the sacrospinal muscle base.

Abstract: A lumbar support for a car seat includes a support element formed of a plate spring having a high elasticity to be positioned between traverse fixing bars which are mounted at upper and lower parts in a seat back for supporting a lumbar portion of a driver, and having a plurality of support wings formed at both sides and folded outwardly for surrounding the lumbar portion of the driver and a curved protrusion optionally formed in the center for supporting the lumbar portion of the driver, coupling units for coupling the support plate with the traverse fixing bars, a supporting height control element for steplessly controlling a protruded height of the support plate which is selectively and curvedly protruded at a side of the support plate, and a pelvic supporting element formed at a lower part of the support plate and connected to the support plate to contact and support hips of the driver, wherein the contact between the seat and the driver may be improved by forming the pelvic supporting element at the lowe

Abstract: A lumbar support for a car seat includes a support element formed of a plate spring having a high elasticity to be positioned between traverse fixing bars which are mounted at upper and lower parts in a seat back for supporting a lumbar portion of a driver, and having a plurality of support wings formed at both sides and folded outwardly for surrounding the lumbar portion of the driver and a curved protrusion optionally formed in the center for supporting the lumbar portion of the driver, coupling units for coupling the support plate with the traverse fixing bars, a supporting height control element for steplessly controlling a protruded height of the support plate which is selectively and curvedly protruded at a side of the support plate, and a pelvic supporting element formed at a lower part of the support plate and connected to the support plate to contact and support hips of the driver, wherein the contact between the seat and the driver may be improved by forming the pelvic supporting element at the lowe