| 摘要 |
PURPOSE:To effectively reduce the vibration and noise, by arranging a control plate between the first disc plate and a hub flange and arranging the first and second friction members between the control plate and the hub flange and between the control plate and the first disc plate, respectively. CONSTITUTION:A control plate 62 is arranged between the first disc plate 40 and a hub flange 31. Meanwhile, the first friction member 61 is arranged between the control plate 62 and the hub flange 31, while the second friction member 63 is arranged between the control plate 62 and the first disc plate 40. Both the first friction member 61 and the third spring operate in the first half of the second, preset angle, while the second friction member 63, the third spring, and the fourth spring operate in the latter half of the second, preset angle. Accordingly, by setting the coefficient of friction of the second friction member 63 at a value larger than the coefficient of friction of the first friction member 61, we can get the hysteresis characteristics of the third stage. Thus, the measure to encounter with vibration or noise can be improved. |
