| 摘要 |
<p>A liquid-sealed vibration-isolating device, comprising a main orifice part, a first auxiliary orifice part (6), and a second auxiliary orifice part (46). A first rubber valve (18A) is vulcanized/molded in the first orifice groove (30) of a first orifice groove formation part, and a second rubber valve (18B) is vulcanized/molded in the second orifice groove (31) of a second orifice groove formation part. When fluid pressures in a first fluid chamber (4A) and a second fluid chamber (4B) are less than a set value, the first rubber valve (18A) and the second rubber valve (18B) are kept in a closed state, and when the fluid pressures are increased to the set value, the first rubber valve (18A) or the second rubber valve (18B) is opened. Swelled parts (17A) and (17B) of circular arc shape in cross section are formed at the top parts of the first rubber valve (18A) and the second rubber valve (18B). The swelled part (17A) of the first rubber valve (18A) is swelled from the membrane face of the first rubber valve on the upstream side of the first orifice groove (30) to the outside of the membrane face, and the swelled part (17B) of the second rubber valve (18B) is swelled from the membrane face of the second rubber valve on the upstream side of the second orifice groove (31) to the outside of the membrane face.</p> |
