Patent ID: 6955399

Claim:
A lumbar support of a car seat comprising: a support element formed of a support plate having a high elasticity to be positioned between upper and lower transverse 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 transverse 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 having an upper end integrally formed with the support plate and a free lower end formed at a predetermined angle of protrusion to support hips of the driver whereby the support plate and the pelvic supporting element simultaneously support the lumbar portion and the hips of the driver respectively when the curved protrusion is formed in the center of the support plate to support the lumbar portion of the driver; wherein the pelvic supporting element is spaced apart from and located between the upper and lower transverse fixing bars so that the free lower end of the pelvic supporting element moves toward the driver to engage the hips of the driver when the curved protrusion is formed in the center of the support plate.