Patent ID: 7413174
Filing Date: 2008-08-19
Classification: F16F

Abstract:
1. A fluid-filled type vibration-damping device comprising: a main rubber elastic body of generally frustoconical shape; a first mounting member affixed to an axial upper end of the main rubber elastic body; a second mounting member affixed to an axial lower end of the main rubber elastic body; a pressure-receiving chamber formed axially below the main rubber elastic body, being partially defined by the main rubber elastic body and having a non-compressible fluid sealed therein; an equilibrium chamber having a non-compressible fluid sealed therein and formed between the main rubber elastic body and a flexible film by disposing the flexible film so as to cover an outside face of the main rubber elastic body; and an orifice passage through which the pressure-receiving chamber and the equilibrium chamber communicate with each other; wherein an equilibrium-chamber-side opening of the orifice passage is situated in proximity to an axial lower end of the outside face of the main rubber elastic body; wherein a guide groove extending in a straight line axially upward is formed on the outside face of the main rubber elastic body in proximity to the equilibrium-chamber-side opening of the orifice passage; and wherein a projecting rib that projects from the flexible film towards the guide groove is formed extending along the guide groove, such that the projecting rib prevents the flexible film from directly contacting the guide groove.