| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for fixing an impeller and a driven magnet in a magnetically driven pump in which the impeller and the driven magnet are easily and instantaneously fixed together. SOLUTION: In a synthetic resin impeller 36 including a blade part 40, a plurality of snap arms 44 having displaceable free ends are integrally formed on the same circumference. A snap hook 48 is formed at the free end of the snap arm 44. A cylindrical driven magnet 32 is fitted to a plurality of snap arms 44 from the outside. The snap hooks 48 of the snap arms 44 are engaged with the driven magnet 32 with the driven magnet 32 abutted on a stopper. The snap arms 44 are engaged with the snap hooks 48 so that the driven magnet 32 is prevented from moving in the opposite direction of the advancing direction thereof. Thus, the driven magnet 32 is fixed to the impeller 36. COPYRIGHT: (C)2010,JPO&INPIT
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