Patent ID: 6178596
Filing Date: 2001-01-30
Classification: E05D,Y10T

Abstract:
An apparatus to adjust an angle of a seat back and a seat cushion of a vehicle, each of the seat back and the seat cushion having a supporting bracket fixed to an end thereof, the apparatus for adjusting the angle of the seat back and seat cushion comprising:first and second turning pieces mountable to said supporting brackets of said seat back and said seat cushion, said first and second turning pieces being connectable wherein each has a connecting hole;a connecting shaft that penetrates said connecting hole to connect said first and second turning pieces;an actuating lever attached to said connecting shaft for turning said first and second turning pieces to raise and lower the seat back to and from the seat cushion;an arc shaped concave portion formed on an outer surface of said first turning piece, said outer surface of said first turning piece facing a direction away from the seat back and the seat cushion;a guiding protrusion extending away from an inner surface of said second turning piece in a direction toward the seat back and the seat cushion, said guiding protrusion having a cylindrical upper end that is guided within the concave portion by surface contact when said first and second turning pieces are connected;a guiding groove defined by said guiding protrusion and forming a slanting jaw at a lower end of said guiding groove, said slanting jaw being concaved perpendicularly in a middle of the guiding protrusion, wherein side surfaces of the guiding protrusion are inclined inwardly relative to the slating jaw;a latch portion provided between the connected first and second turning pieces and within the guiding groove to control an amount of stopping and turning of the turning pieces; andan actuating portion arranged in a rectangular hole defined by the latch portion to turn the connecting shaft so as to lift or lower the seat back relative to the seat cushion.