| 摘要 |
A fluid-filled cylindrical elastic mount comprising: a center shaft member; an intermediate sleeve disposed radially outwardly of the center shaft member; an elastic body interposed between and connecting the center shaft member and the intermediate sleeve; and an outer sleeve member disposed on the intermediate sleeve; an orifice member interposed between the intermediate sleeve and the outer sleeve member to divide a first pocket formed in the elastic body into a pressure-receiving chamber and a first equilibrium chamber partially defined by a first flexible diaphragm, to close a second and third pocket diametrically opposite to the first pocket, to provide a second equilibrium chamber having a spring stiffness smaller than that of the first equilibrium chamber and a third equilibrium chamber having a spring stiffness larger than that of the first equilibrium chamber, and to partially define a first, second and third orifice passages for communication of the respective first, second and third equilibrium chambers with the pressure-receiving chamber, and wherein the elastic body has an axial void to provide a second and third flexible diaphragm which partially define the respective second and third equilibrium chambers, and the first orifice passage has a ratio of a cross sectional area to a circumferential length higher than that of the second orifice passage, and lower than that of the third orifice passage.
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