Patent ID: 8281808

Claim:
A coolant reservoir tank for a fuel cell vehicle, the coolant reservoir tank comprising: a reservoir housing having a predetermined volume of space; a cover for covering the top of the reservoir housing; and a plurality of ports detachably provided on at least one portion of the cover, wherein the reservoir housing and the cover are connected by a hinge type fastening member, a cap nut connected to a bottom portion of each of the ports; and at least one screw-type tube formed integrally with and protruding from a portion of the top surface of the cover and having a screw thread on the outer circumferential surface thereof, wherein each of the ports is connected to the cover by connection between the cap nut and the screw-type tube; wherein the hinge type fastening member includes a ring portion, a top portion of which is in the form of a hook, and a body, a top portion of which is hinge-connected to a portion of the outer surface of the reservoir housing such that a bottom portion thereof can be rotated upwardly and downwardly, and the cover is provided on a plurality of edges thereof with a locking groove in the form of so that the ring portion of the fastening member can be locked thereto, wherein the bottom surface of the reservoir housing is inclined toward the center of the bottom of the reservoir housing, a straight pipe is provided to extend vertically from the center, and a top portion of the straight pipe is to be inserted into one of the screw-type tubes provided on the cover such that coolant stored in the reservoir housing is introduced through a bottom portion of the straight pipe and moved upward by a pressure difference caused by a vacuum applied in a fuel cell.