Patent ID: 9144317
Filing Date: 2015-09-29
Classification: A47C,A61H

Abstract:
1. A functional chair comprising; a backrest support coupled to the rear side of a chair seat board and extending in an upward direction; a backrest fixed to the backrest support and having a plurality of operation holes perforated at both sides of the front surface in a zigzag pattern; a rotation axis fixed to a center of the rear surface of the backrest; two rotation plates having a plurality of finger-like extensions formed at horizontally the same location as the operation holes and facing while not interfering with each other so as to allow each of the finger-like extensions to rotate on the rotation axis through a rotation sleeve; an operation rod fixed to the opposite side of each finger-like extension on each of the rotation sleeves and emerging to the front direction of the backrest through each operation hole when each rotation plate rotates; a massage roller rotatably fixed to each operation rod; and an armrest fixed to the side surface of each rotation plate and emerging the massage roller to the front side of the backrest according to an operation to spread to opposite sides from each other.