| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid-sealed bush to effect vibration absorption at two different frequency regions. SOLUTION: A liquid-sealed bush comprises a main spindle metal fitting 1: an outer cylinder metal fitting 4 coaxially disposed at the outside of the main spindle metal fitting l with a distance therebetween; a rubber elastic substance 3 located between the main spindle metal fitting 1 and the outer cylinder metal fitting 4 and integrally intercoupling the two members, and having main and auxiliary liquid chambers 42 and 43, filled with low viscosity liquid L, arranged on both sides in a radial direction with the main spindle metal fitting 1 located therebetween; and a stopper member 5 fixed at the main spindle metal fitting 1 and having a stopper member 5 consisting of a first stopper part 51 protruding to the main liquid chamber 42 and a second stopper part 52 protruding to the auxiliary liquid chamber 43. In this case, the sectional area of a first orifice passage 53 formed between the wall surface of the main liquid chamber 42 and the first stopper part 51 and extending in a direction extending across a radial direction and the sectional area of a second orifice passage 53 formed between the wall surface of the auxiliary liquid chamber 43 and the second stopper part 52 and extending in a direction extending across a radial direction are set differently from each other. |
