| 摘要 |
PURPOSE:To reduce the influence exercised by antiresonance, by a method wherein an opening through which the inside and the outside of a liquid chamber are intercommunicated is provided in a resilient body provided at its interior with the liquid chamber, and the opening is closed with an auxiliary resilient body to which a mass body is mounted. CONSTITUTION:An opening 20, through which the inside and the outside of a liquid chamber 14 are intercommunicated, is formed in the central part of the upper side of a resilient body 13 mounted between upper and lower frame bodies 11 and 12, and a cylindrical member 21 is secured to the inner periphery of the opening 20. The upper end part of the cylindrical member 21 is expanded in a flangelike manner, and is located between the upper frame body 11 and the resilient body 13. The cylindrical member 21 is closed by an auxiliary resilient body 22, and a mass body 23 is mounted to the central part of the auxiliary resilient body 22. As a result, two resonance arears are formed, and this reduces the size of a vibration frequency area, within which vibration can bet be heretofore damped, and the influence exercised by antiresonance. |
