A OFFICE CHAIR

摘要

PURPOSE: An office chair is provided to enable a user to correct his/her posture and to take a rest while leaning on the armrest and seat back in a comfortable posture. CONSTITUTION: An office chair comprises: a frame in which a supporting member is equipped; a seat plate(130) which is rotationally connected to a frame by a hinge and in which the rear thereof is elastically inclined by a supporting member; a seat back unit(140) which is connected to the rear of the frame; a lumbar vertebra support unit(150) which is rotationally connected to the rear side of the seat plate and supports the lumbar vertebra of a user; and a pair of support units(170a,170b) which are used as an armrest and a knee supporting board.