Patent ID: 6840230

Claim:
A reservoir unit to be installed in a fuel tank having an upper subunit, a lower subunit and an elastic member, wherein: the upper subunit is provided with a plate-shaped portion to block an opening formed in the top face of the fuel tank and guide rails extending from that plate shaped-portion toward the bottom of the fuel tank, said plate-shaped portion and guide rails being integrally molded of resin, the lower subunit is provided with a resin-built reservoir, a fuel filter accomodated in the reservoir, and a fuel pump accommodated in the reservoir, slots to slidably accept said guide rails being integrally formed in the reservoir, the elastic member, provided between the upper subunit and the lower subunit, presses the lower subunit toward the bottom of the fuel tank, and said guide rails are formed in a flat plate shape and a large hole is bored in a part of each of said guide rails near a point of connection to the plate-shaped portion to form a frail portion thin on both sides.