| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric gear pump capable of reducing manufacturing cost, by simplifying a structure and a manufacturing process. SOLUTION: This electric gear pump 10 has a pump part 30 provided with an outer rotor 31 having internal teeth 31b, an inner rotor 33 having external teeth 33a meshing with the internal teeth 31b, and a housing 11 storing both these rotors 31 and 33, and a motor part 20 having a driving shaft 26 rotatingly driving the pump part 30. The driving shaft 26 is supported so that one end part 26a is formed as the free end and the other end part is coaxially integrally rotatable with the outer rotor 31. A ball bearing 32 rotatably supporting the outer rotor 31 to the housing 11, is interposed between the outer rotor 31 and the housing 11. COPYRIGHT: (C)2008,JPO&INPIT
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