Patent ID: 8297260

Claim:
A fuel supply system for supplying fuel in a fuel tank to an injector of an internal combustion engine, the system comprising: a covering member covering an opening of the fuel tank; a subtank disposed in the fuel tank; a first housing formed on the covering member to project toward the subtank; a plurality of terminals accommodated in the first housing; a second housing fitted to the first housing; and a plurality of lead wires accommodated in the second housing and connected respectively to the plurality of terminals, wherein: the first housing includes: a fitting recess that opens toward the subtank; and a partition wall that divides the fitting recess into a plurality of independent spaces, each of which receives a corresponding one of the plurality of terminals; the second housing includes: a fitting projection fitted into the fitting recess, a narrow clearance through which fuel can circulate being defined between a top surface of the fitting projection of the second housing and a bottom face of the fitting recess of the first housing; a slit that divides the fitting projection into a plurality of independent blocks, each of which receives a corresponding one of the plurality of terminals, the partition wall being inserted in the slit; and a plurality of axial holes, each of which accommodates a corresponding one of the plurality of lead wires; and each of the plurality of lead wires includes a corresponding one of a plurality of elastic seal members, each of the plurality of elastic seal members sealing a gap formed between an outer surface of a corresponding one of the plurality of lead wires and a peripheral wall surface of a corresponding one of the plurality of axial holes.