Patent ID: 8651835

Claim:
A fluid pump comprising: a motor unit that comprises a stator, a rotor, and a rotational shaft on which the rotor is fixed, to thus generate a rotating torque; a pump unit that is placed separately from the motor unit on one side of the motor unit, and that comprises an impeller for pumping fluid; a first power transmission unit that comprises a first magnet that is fixed to the rotor and is rotated with the rotor; a first case that houses the motor unit and the first power transmission, wherein the first case is formed of a single monolithic piece and includes a first clogged top portion and a first open bottom portion, and an upper end of the rotational shaft is rotatably supported on an inner surface of the first clogged top portion; a second power transmission unit that is disposed above the first clogged top portion and comprises a second magnet that is fixed to the impeller, wherein the first magnet and the second magnet are disposed facing each other at both sides of the first clogged top portion and have opposite polarities, and the portion of the first clogged top portion where the first and second magnets face each other has a thickness thinner that the remaining portion of the first clogged top portion; a second case that houses a driver and is formed of a single monolithic piece having a second clogged top portion and a second open bottom portion, wherein the second clogged top portion is combined with the first open bottom portion of the first case, and a lower end of the rotational shaft is rotatably supported on an outer surface of the second clogged top portion; and a third case that seals the second open bottom portion of the second case.