| 摘要 |
PURPOSE:To constitute a watertight rotation transmitting device with a first magnet body, mounted on a rotary shaft, a non-magnetic cylindrical watertight shell, with which the magnet of the rotary shaft is covered, and a rotary body having a second magnet body coupled with the first magnet body. CONSTITUTION:In a watertight rotation transmitting device, a first magnet 32 is magnetically coupled with a second magnet 38 through a cylindrical watertight shell 34. With a rotary shaft 30 rotationally driven, the first magnet 32 is also rotated togetherwith, and the second magnet is also rotated, as in a synchronous electric motor, following rotation of the first magnet through magnetic coupling made between the first and second magnets 32 and 38. Since there is no mechanical coupling between the rotary shaft 30 and the rotary both 36 and the two members are completely separated from each other, a completely watertight rotation transmitting device can be constituted.
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