Patent ID: 9046147
Filing Date: 2015-06-02
Classification: F16F

Abstract:
1. A liquid-filled vibration isolating device, comprising: a core member to be connected to one of a vibration generating body and a vibration transmitting body; a cylindrical member to be connected to the other body; an elastic member connecting the cylindrical member at one end thereof to the outer periphery of the core member in a fluid-tight manner; a diaphragm attached to the other end of the cylindrical member in a fluid-tight manner; a fluid chamber configured as a space defined inside the diaphragm, the space being filled with an incompressible liquid; and a partition member partitioning the fluid chamber into a primary liquid chamber on the core member side and a secondary liquid chamber on the diaphragm side, the partition member having a membrane, a membrane support supporting the membrane, a membrane retainer for restricting, in cooperation with the membrane support, a deformation amount or a displacement amount of the membrane, and a limit passage communicating the primary liquid chamber with the secondary liquid chamber, the membrane support and the membrane retainer each having a through hole penetrating therethrough in a direction toward the primary and secondary liquid chambers, respectively, wherein at least one of the membrane support and the membrane retainer has the through hole sectioned into a plurality of windows by one or more beams each having a curved or deflected shape in a plane perpendicular to the thickness direction of the partition member, wherein the one or more beams each has a first portion and a second portion, wherein the first portion extends to a hole edge of the through hole and said first potion has a curved or deflected shape extending from the hole edge in the circumferential direction about a central axis of the partition member, and wherein the second portion is circumferentially offset about the central axis from the first portion.