| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric inscribed gear pump reducing the axial length even if supporting a main spindle by bearings in axial both sides of a motor section in the electric inscribed gear pump having the main spindle served as a drive shaft and a rotary shaft. SOLUTION: This motor integrated type electric inscribed gear pump is provided with a rotor part 4 which has an outer rotor 25 having an internal tooth 25a and an inner rotor 26 having an external tooth 26a geared with the internal tooth 25a, the electric motor part 3 rotatingly driving the inner rotor 26, and the main spindle 5 coaxially and integrally comprising the drive shaft of the electric motor part 3 and the rotary shaft of the inner rotor. The main spindle 5 is supported only by the first bearing 10 and the second bearing 17a in the axial both sides of the electric motor section 3, the first bearing 10 supports the main spindle 5 in the axial end part opposite to the rotor part 4, and the second bearing comprises components provided in the outer circumferential side of the outer rotor 25 alone and supports the main spindle 5 via the inner rotor 26. COPYRIGHT: (C)2004,JPO&NCIPI
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