Perfect Waterproof Fluid Pump

The present invention relates to a fluid pump which can achieve a perfect waterproofing of the electric motor as arranged by separating the electric motor for driving the impeller to the exterior of the fluid flow path. The invention pump upper casing having an outlet in which a fluid is introduced into the inlet port and the introduced fluid is discharged; Pump-side lower case having a first inner space to the outside of the fluid flow path together with the pump upper casing to form a fluid flow passage therein; The distal end portion is passing through the top plate of the lower pump casing from said first internal space and extending into the fluid flow passage formed from a support top plate integral with the shaft; Said support comprising a rotor and stator which axis is rotatably coupled to and disposed in the first internal space, an electric motor generating a rotational driving force; It is formed integrally with the rotor of the electric motor is rotated in the active drive unit is disposed in the first internal space of the fluid flow passage and facing a pump-side lower case; Rotating the driven rotary drive is made in accordance with the flow of the fluid is magnetically coupled to an active drive wherein the active drive unit to the internal passage; And integrally formed with the driving part and the driven characterized by including an impeller which is rotatably coupled to said supporting shaft extending into the fluid flow passage.