To provide an electric pump capable of suppressing the rust of a rotor core.
The electric pump is equipped with a stator 20 and a rotor 30. The rotor 30 has a metallic shaft 34, an ferrous rotor core assembly 31 fixed in an axial middle portion of the shaft 34, and a synthetic resinous impeller 35 formed with a liquid transporting groove portion 36 axially communicating on an outer peripheral portion. The rotor 30 is formed by covering the rotor core assembly 31 and near part thereof with the impeller 35 molded with the shaft 34. The rotor 30 is provided with a flow passage A in which liquid passes between the stator 20 and the impeller 35, and rotatably disposed in the stator 20. Annular recessed portions 38 are respectively provided on axial both end portions if the shaft 34 is in contact with the impeller 35. Projecting portion 37 of an inner peripheral portion of the impeller 35 are fitted in the recessed portions 38. Sealing is carried out at the recessed and projecting fitting portions.
Sadao Muramatsu
Atsushi Tsuboi
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Shoji Kawai
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