PROBLEM TO BE SOLVED: To provide a pump device equipped with a magnetic gear deceleration mechanism whose soft magnetic body is the rotation output.SOLUTION: A pump device 10 includes a pump body 22 that rotatably houses an impeller 14, and a driving device 24 in which a rotor 72 is magnetically connected to the impeller 14 to rotate the impeller 14. A magnetic gear deceleration mechanism 84 includes a driven pole piece group 57 provided to the impeller 14, a driving magnet group 77 provided to the rotor 72, and a fixed magnet group 87 fixed on a side opposite to the driving magnet group 77 with the driven pole piece group 57 in between.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】軟質磁性体を回転出力とする磁気ギア減速機構を備えるポンプ装置を提供する。【解決手段】ポンプ装置１０は、インペラ１４を回転自在に収容するポンプ本体２２と、ロータ７２がインペラ１４と磁気的に結合してインペラ１４を回転させる駆動装置２４と、を備える。磁気ギア減速機構８４は、インペラ１４に従動ポールピース群５７と、ロータ７２に設けられる駆動磁石群７７と、従動ポールピース群５７を挟んだ駆動磁石群７７の反対側に固定される固定磁石群８７と、を有する。【選択図】図１
