Patent ID: 8007956

Claim:
A separator for a flat polymer electrolyte fuel cell having unit cells arranged in a flat manner, said separator provided on a fuel feed side or an oxygen feed side, said separator comprising: a separator member coupled body having a metal plate as a base body, and formed by integrally coupling a plurality of separator members each having through holes for feeding fuel to an electrolyte of the fuel cell, said through holes arranged so as to correspond to the unit cell and to be perpendicular to a surface of said base body so that the through holes extend from a front side of the separator member coupled body to a back side of the separator member coupled body, a frame coupled body made of an insulating material, having openings for fuel feeding or oxygen feeding corresponding to the respective separator members, and formed by integrally coupling a plurality of frame members that give insulation between the unit cells, and a solid plate member made of an insulating material, wherein said frame coupled body and said solid plate member, making a pair, sandwich said separator member coupled body on the respective front side and back side, and a membrane electrode assembly of a respective unit cell fits into said opening of each respective frame member, wherein the solid plate member includes a first projecting portion, the framed coupled body includes a second projection portion, and the separator member coupled body includes an intercell separation through hole, and wherein when the frame coupled body and the solid plate member sandwich the separator member coupled body, the first projection portion and the second projection portion are respectively fit into the intercell separation through hole so that the first projection portion and the second projection portion contact.