| 摘要 |
PROBLEM TO BE SOLVED: To increase reliability of a compact motor integral type internal gear pump while maintaining its inexpensive function. SOLUTION: A pump part 81 of the motor integral type internal gear pump 80 is provided with an inner rotor 1 formed with teeth at the outer periphery, an outer rotor 2 formed with teeth meshing with them at the inner periphery, a pump casing for storing both rotors 1, 2, and an inner rotor supporting shaft 5 for supporting the inner rotor 1. A motor part 81 is provided with a rotor 11 arranged on an inner side of the pump casing and a stator 12 arranged on an outer side of the pump casing. The pump casing is composed of two casing members 3, 4 having an outer rotor bearing part 22 facing both side faces of the outer rotor 2 and the inner rotor 1 and journaling both sides of the outer rotor 2. The inner rotor supporting shaft 5 is provided to have an inner rotor bearing part 50 being eccentric for the outer rotor 2 to support the inner rotor 1 rotatably and connect two casing members 3, 4 substantially concentrically with the outer rotor bearing part 22. COPYRIGHT: (C)2006,JPO&NCIPI
|
