| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil pump device that can secure a motor arrangement space and suppressing loss in driving force of the motor by reducing slide resistance when driving the motor. <P>SOLUTION: An inner gear 21, an outer gear 23 and a motor part 30 are built into a pump housing 10. A one-directional interlocking mechanism 50 which transmits power from a sleeve 2 side to the inner gear 21 side but blocks power in reverse transmission is structured between an outer peripheral surface of the sleeve 2 and the inner gear 21. The motor part 30 structured to have a rotor 33 held integrally with the outer gear 23 and a stator 31 held in the pump housing 10 is disposed along a circumference of the outer gear 23. The motor part 30 is structured so that the rotor 33 rotates with respect to the stator 31 by current supply to transmit driving force to the outer gear 23. Pumping action takes place by relatively turning the inner gear 21 and the outer gear 23 by the driving force of the engine and the driving force of the motor part 30. <P>COPYRIGHT: (C)2013,JPO&INPIT |
