Abstract: In a storage structure for a head rest designed in such a way that with a seat cushion pulled up and frontward and a head rest detached, a seat back is to be folded frontward and stays of the head rest are to be fitted in the seat cushion, a back of the seat cushion is formed by a resin panel integrally provided with cylindrical portions, which have bottoms and hold the stays of the head rest.

Abstract: A seat hinge for a vehicle that is structurally simple, easy to manufacture, and that simplifies mounting on the vehicle. The seat hinge includes a pair of male brackets attached to a seat back, a female bracket that can be affixed to a car body, and a support pin about which the aforementioned pair of male brackets can tilt. Control of the rotation of one of the male brackets around the aforementioned pin is achieved by a bead protruding from the support portion of the male bracket and abutting against an angular member forming an apex of the support portion of the female bracket.

Abstract: The disclosure describes a double folding type of seat, wherein a panel for at least a seat cushion is molded in a synthetic resin material, and at the same time, hinge male parts of the hinge mechanisms are formed integrally into the molded cushion, and thus decreases the number of parts, reduces the weight, and improves the assembling performance. In particular, the seat includes a reinforcement panel 4 for a seat cushion 2 or seat back 3 being molded in a synthetic resin material, and additional parts for the reinforcement panel being integrally formed.