| 摘要 |
PROBLEM TO BE SOLVED: To provide an attaching/detaching device of an impeller which can prevent an impeller from being slipped off from a rotating shaft by a large holding force, and can be easily attached and detached. SOLUTION: A boss 10 of the impeller 6 has a holding portion 15 capable of moving in a direction orthogonal to the rotating shaft 2, and locking to a locking groove 5 of the rotating shaft 2 by an energizing force of a locking spring 17 to hold the impeller 6 in a slip-off preventive state; and a slough-off operating portion 19 moving the holding portion 15 against the energizing force of the locking spring 17 and releasing the locking of the holding portion 15 and the locking groove 5. Therefore, the impeller 6 can be attached in the slip-off preventive state by a large holding force by simple operation, and the impeller 6 can be easily removed by the simple operation of the slough-off operating portion 19. COPYRIGHT: (C)2010,JPO&INPIT
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