Fluid filled vibration damping device

摘要

A fluid filled vibration damping device including: a low-frequency orifice passage opening directly towards a pressure-receiving chamber and an equilibrium chamber at either axial end surface of a first orifice member; a rubber partition plate disposed between a bottom surface of a center concavity of the first orifice member and a bottom end surface of a second orifice member, to create a seal mechanism that grasps an outer perimeter edge and a center diameter section of the rubber partition plate with a fluid-tight seal therebetween. Semicircular sections of the rubber partition plate surrounded by the areas grasped by the seal mechanism constituting a first deformable membrane section and a second deformable membrane section that respectively allow prescribed amounts of elastic deformation.