| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize vibration absorption characteristics even when the temperature of internal fluid is changed by providing a plurality of thermal actuating parts to steppedly set the opening area of an orifice according to different working temperatures. SOLUTION: When the temperature of internal fluid R is increased, thermal actuating parts 36 reach a high temperature transformation point in order of a working temperature set to a low value and a shape is changed, and the opening area of an orifice 35 is gradually decreased. However, since viscosity of internal fluid R is decreased, resistance occurring when the internal fluid R flows through the orifice 35 is not widely fluctuated. When the increasing temperature of the internal fluid R is decreased, the thermal actuating parts 36 reach a low temperature transformation point in order of a working temperature set to a low value and are restored to an original shape. Since, though the opening area of the orifice 35 is gradually increased, viscosity of the internal fluid R is increased, resistance occurring when the internal fluid R flows through is not widely fluctuated. Thus, even when the temperature of the internal fluid R is changed, a damping force against vibration of a substance B to be vibrated is hardly changed.</p> |
