| 摘要 |
PURPOSE:To obtain the device with large damping coefficient and radial spring constant by a structure wherein the radius of at least one row of teeth of a magnetic ring is made different from the radius of yoke opposing to said row. CONSTITUTION:The radial difference of inner row Si1, is the difference of the radius of the inner row of teeth 3 of the magnetic ring 5 from the radius of the inner yoke 8 opposing to the inner row and that of outer row So1 is that of the outer row of teeth 4 from that of the outer yoke 9 opposing to the outer row. The differences Si1, and So1 have the predetermined values and the difference So1 is set larger than the difference Si1. Owing to the structure as mentioned above, the predetermined radial spring force is mainly generated between the inner row of teeth 3 and the inner yoke 8, the radial difference between the two of which is small, and as well as a large damping force is produced between the outer row of teeth 4 and the outer yoke 9, the radial difference between the two of which is large. |
