Hinge construction for seat back

摘要

The present invention provides a hinge construction in which a center hinge 14 is provided between seat backs 1 and 2 arranged by being divided into left and right, and the left and right seat backs 1 and 2 are supported by the center hinge 14 so as to be reclinable. In this hinge construction, the center hinge 14 includes a mounting bracket 18 of which one end portion is installed to the right seat back 2, a center hinge bracket 19 installed to the vehicle body side, and a hinge shaft 20 for connecting the mounting bracket 18 to the center hinge bracket 19. The left and right seat backs 1 and 2 are supported via the center hinge 14 so as to be reclinable by inserting the hinge shaft 20 through the other end portion of the mounting bracket 18 and the center hinge bracket 19 and by fixing the hinge shaft 20 to a seat frame 3 of the left seat back 1.