JPH01121742U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an engine mount according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken in FIG. 1, and FIG. 3 is a cross-sectional view taken in FIG. 1. FIG. 4 is a vertical cross-sectional view corresponding to FIG. 1, showing an integrally vulcanized rubber elastic body forming the engine mount, FIG. 5 is a cross-sectional view of FIG. FIG. 7 is a plan view showing the first orifice fitting that makes up the engine mount, FIG. 7 is a plan view showing the inner wall fitting that makes up the engine mount, and FIG. It is a top view which shows the second orifice metal fitting. 10: Inner cylinder metal fitting, 12: Outer cylinder metal fitting, 14: Rubber elastic body, 32: Elastic membrane, 70: Diaphragm, 7
2: first equilibrium chamber, 74: pressure receiving chamber, 76: second equilibrium chamber, 78: first orifice passage, 80: second orifice passage.

Claims (1)

[Scope of Claim for Utility Model Registration] An inner cylindrical metal fitting, an outer cylindrical metal fitting arranged concentrically or eccentrically at a predetermined distance on the outside of the inner cylindrical metal fitting, and between the inner cylindrical metal fitting and the outer cylindrical metal fitting. a rubber elastic body interposed in the rubber elastic body to elastically connect them; a pressure receiving chamber formed within the rubber elastic body and in which an internal pressure change occurs upon vibration input; a plurality of volume-variable equilibrium chambers, at least a portion of which is defined by a flexible membrane to alternatively avoid changes in the internal pressure of the pressure-receiving chambers; a plurality of mutually independent orifice passages that communicate with each other; and a predetermined incompressible fluid sealed in the pressure receiving chamber and the equilibrium chamber, respectively, and the plurality of orifice passages have different shapes. The frequency ranges in which resonance phenomena occur in the incompressible fluid flowing through the incompressible fluid are made to differ from each other, and the flexible membrane defining each equilibrium chamber is connected to the orifice communicating with the equilibrium chamber. A fluid-filled cylindrical mount characterized in that the higher the frequency at which the resonance phenomenon occurs in the passage, the higher the elastic modulus is, making it difficult to deform.