LIQUID-SEALED VIBRATION ISOLATION DEVICE

摘要

A liquid-sealed vibration isolation device that suppresses noise without a reduction in vibration isolation characteristics. The liquid-sealed vibration isolation device has a first installation member (1), a second installation member (2), a vibration isolation base body (3), a diaphragm (9), a partition body (12), and an orifice (25). The partition body (12) is constructed from an orifice forming member (16) having an annular shape and provided inside the installation member (2), a rubber wall (15) adhered by vulcanization to an inner peripheral surface (16N) of the orifice forming member (16) and closing between inner peripheral surfaces, and a pair of partition plates (17, 18) for holding the rubber wall in between them in the axis direction (G). One partition plate (18) forms a part of the chamber wall of a first liquid chamber (11A), and the other partition plate (17) forms a part of the chamber wall of a second liquid chamber (11B). The amount of displacement of the pair of the partition plates (17, 18) in the axis direction (G) of the orifice forming member (16) is limited by the rubber wall (15).