FLUID-FILLED VIBRATION DAMPING DEVICE

摘要

A fluid-filled vibration damping device including a hollow buffer body with an inner space. The hollow buffer body is housed in a housing space of a partition member to come in contact with wall inner surfaces of the housing space on sides of a pressure-receiving chamber and an equilibrium chamber, while stores a movable member in the inner space thereof. Liquid pressure of the pressure-receiving chamber is applied to a first face of the movable member by having a first window portion formed in the buffer body communicated with a first communication hole of the housing space while liquid pressure of the equilibrium chamber is applied to a second face of the movable member by having a second window portion formed in the buffer body communicated with a second communication hole of the housing space.

主权项

1. A fluid-filled vibration damping device comprising:
a first mounting member; a second mounting member; a main rubber elastic body elastically connecting the first and second mounting members; a partition member supported by the second mounting member; a pressure-receiving chamber whose wall portion is partially defined by the main rubber elastic body; an equilibrium chamber whose wall portion is partially defined by a flexible film, the pressure-receiving chamber and the equilibrium chamber being disposed on either side of the partition member and filled with a non-compressible fluid; an orifice passage through which the pressure-receiving chamber and the equilibrium chamber communicate with each other; a housing space formed within the partition member; a movable member housed in the housing space with liquid pressure of the pressure-receiving chamber applied to a first face of the movable member and liquid pressure of the equilibrium chamber applied to a second face of the movable member respectively through a first communication hole and a second communication hole formed in a wall of the housing space; and a hollow buffer body with an inner space housed in the housing space to come in contact with wall inner surfaces of the housing space on sides of the pressure-receiving chamber and the equilibrium chamber, while storing the movable member in the inner space thereof, wherein the liquid pressure of the pressure-receiving chamber is applied to the first face of the movable member by having a first window portion formed in the buffer body communicated with the first communication hole of the housing space while the liquid pressure of the equilibrium chamber is applied to the second face of the movable member by having a second window portion formed in the buffer body communicated with the second communication hole of the housing space.