| 摘要 |
<p>PURPOSE:To simplify the manufacture, by constituting a pump such that it separates a controller part and a stator in a motor part liquid-tightly from a rotor side by a cup-shaped seal member permitting fuel to infiltrate only to the rotor side. CONSTITUTION:A stator 26 in a motor part 1 and a rotor 22 are liquid-tightly separated from each other by a cup-shaped seal member 28. One part of fuel in a pump part 4 infiltrates into the motor part 1 passing through a communication hole 15 provided in an inner side end plate 10 in the pump part 4, but the fuel is prevented from infiltrating into a side of the stator 26, and only the periphery of the rotor 22 is filled with the fuel. Accordingly, the manufacture is simplified with no necessity for applying a complicated and difficult seal of hermetic seal or the like.</p> |
