| 摘要 |
PURPOSE:To facilitate the fitting of a pressed pair of rotating magnetic poles to a rotating disc by a structure wherein the pair of magnetic poles is installed through an annular spacer with a fitting part of the rotating body. CONSTITUTION:The annular spacer 8 equipped with the fitting part 7 to the rotating disc 6 is installed between the pair of rotating magnetic poles 2 and the rotating disc 6 so as to facilitate the fitting of the pair of magnetic poles 2 to the rotating disc 6. Owing to the structure as described above, even when the rotating disc 5 is of thin plate, the pressed pair of magnetic poles 2 can be applied to the disc 6 and as well as the configuration of either of the both parts 2 and 6 can be selected freely. In addition, by changing the thickness of the spacer 8, the merit for possibility of adjustment of the distance between the rotating body and the stationary side is resulted. |
