| 摘要 |
PURPOSE:To lengthen the life of one bearing of a shaft fixing a following body while improving the concentric accuracy of a drive body and the following body by a mechanism wherein the fixed drive body and following body are each mounted to an input shaft and an output shaft, and the bearing is supported by means of the drive body. CONSTITUTION:A drive body 10 is fixed to one end of a shaft 5 of a motor. The drive body 10 consists of a magnetic pole body 20 and a magnetic path forming body 23, and an eddy current generating plate 35 of a following body 40 is arranged into a ringed magnetic path made up among the magnetic pole pieces 17, 19 of the magnetic pole body 20 and the magnetic path forming body 23. With an output shaft 30 fixing a boss 38 forming the following body 40, one is supported by means of a bearing 32 fixed to an end bracket 31 while the other is supported by means of a bearing 34 disposed between the output shaft and the drive body 10. Thus, the relative speed of the outer and inner circumferences of the bearing 34 is reduced, and its life is lengthened while the concentric accuracy of the drive body 10 and the following body 40 can be improved. |
