| 摘要 |
PROBLEM TO BE SOLVED: To prevent slipping between a shaft sleeve and a pump shaft, even if there is slight looseness in a vane-stop nut caused by reverse rotation or the like of an electric motor. SOLUTION: A pump device comprises: the pump shaft 18 whose outer circumferential part is spline-machined; an impeller 34 attached to the pump shaft 18; and the shaft sleeves 36, 38 directly or indirectly abutted with an end face in an axial direction of the impeller 34 and attached to the pump shaft 34. A detent part 60 is formed in inner diameter parts of the shaft sleeves 36, 38 to prevent its rotation with respect to the pump shaft 18. COPYRIGHT: (C)2007,JPO&INPIT
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