| 摘要 |
PROBLEM TO BE SOLVED: To reduce a dynamic spring constant at a specific frequency and improve an anti- vibration effect by providing liquid chamber in which an elastic body can be expanded/ contracted as one part of a partition and a movable plate extended so as to connect a base end side to an inner cylinder so as to be interlocked to the inner cylinder at the vibration generation time and face to the inner wall surface in the liquid chamber in a tip side. SOLUTION: Liquid chamber 14, 15 formed by one part of the inner wall surface of an outer cylinder 12 and one part of an elastic body 13 are installed between the inner cylinder 11 and the outer cylinder 12 and a movable plate 16 is arranged in the liquid chamber 14. The base end side of the movable plate 16 is formed integrally with the inner cylinder 11 and a projection part 16A projected from a connection part to the liquid 14 and whose tip side is expanded to the direction different from a projection direction is formed and its end side is faced to the inner wall surface of the liquid chamber 14 and a clearance S in which a liquid can be run is formed. When a vibration is transmitted to the inner cylinder 11 and the inner cylinder 11 is moved vertically, the elastic body 13 is deformed and the liquid runs in the clearance S and a viscosity resistance and an attenuation operation by a liquid column resonance are generated. By matching with this, at the input time of a high frequency small amplitude vibration, the increase of the dynamic spring constant is restrained and the anti-vibration effect can be improved. |
