| 摘要 |
PURPOSE:To facilitate coincidence with frequency needing damping capacity, by a method wherein movement of the mass body acting as a dynamic damper is exerted on a fluid chamber to increase the degree of freedom of setting of the resonance frequency of the mass body. CONSTITUTION:A mount rubber 3, having an internal space 3a, is secured between a base plate 1 on the power unit side and a base plate 2 on the car body side, and a fluid chamber 4 is formed in the internal space 3a. An opening 4b is provided in the one base plate 1, serving to partition a fluid chamber 4, an opening 1b is covered with an elastic film 12 to which a mass body 11 is attached, and action similar to that of the dynamic damper is exerted. Resonance frequency, indicating the maximum value of damping capacity approximately proportions a sectional area ratio of the elastic film 12 to the internal space 3a, and this increases the degree of freedom of setting. |
