| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotational vibration suppression device capable of suppressing rotational vibration with a simple structure without requiring power.SOLUTION: A rotational vibration suppression device includes: a disc 11 rotating integrally with a rotary shaft 60 around the same axis N; a casing 20 having opposite surfaces 21, 22 facing both surfaces 11a, 11b of the disc 11 through predetermined spaces, respectively, and arranged relatively rotatably with respect to the disc 11 and the rotary shaft 60; magnetic viscous fluid 30 interposed in the predetermined spaces; and magnetic field generation means to generate a magnetic field penetrating the predetermined spaces where the magnetic viscous fluid 30 is interposed and the disc 11. The magnetic field generation means are a pair of permanent magnets 40 arranged on both sides in a plate thickness direction of the disc 11 outside the casing 20. |
