FLAT BRUSHLESS MOTOR PUMP AND ELECTRIC WATER PUMP UNIT FOR VEHICLE EMPLOYING FLAT BRUSHLESS MOTOR PUMP

摘要

A flat brushless motor pump comprising a flat brushless motor, an impeller coupled with the rotating shaft of the flat brushless motor, a pump casing for containing the flat brushless motor and the impeller and having a suction opening for sucking fluid and a delivery opening for delivering fluid, and a motor cover constituting a part of the pump casing and holding the bearing of the flat brushless motor which bears the rotating shaft rotatably wherein the fluid is sucked from the suction opening by the rotation of the rotting shaft and delivered from the delivery opening. The flat brushless motor comprises a stator section having a core around which a plurality of armature coils are wound and a terminal connected electrically with the armature coils and formed by resin molding the core and the terminal watertightly, and a rotor section formed of a magnet arranged oppositely to the core through an air gap, the rotating shaft and a yoke secured to the rotating shaft and holding the magnet, wherein the bearing is an underwater bearing for sliding the rotating shaft by a water membrane.