To provide a liquid sealed vibration control device capable of improving durability of an outer peripheral part of a diaphragm interposed between a cylindrical part protruding from a partition body and an inner peripheral surface of a cylindrical second fixture.SOLUTION: A liquid sealed vibration control device comprises: a partition body which partitions a liquid chamber inside of a second fixture into a first liquid chamber at the side of a vibration control substrate and a second liquid chamber at the side of a diaphragm; and a cylindrical part which protrudes from the partition body to the opposite side of the first liquid chamber along an inner peripheral surface of the second fixture. The cylindrical part includes an expansion portion expanding radially outside at a position away from the partition body, and a groove bottom face formed from an outer peripheral surface of the cylindrical part between the expansion portion and the partition body. The diaphragm includes: a film-like movable portion opposed to the second liquid chamber; an annular held portion held between the groove bottom face and the inner peripheral surface of the second fixture; and an annular connection portion where the inner peripheral surface is recessed with respect to the held portion and the held portion is connected with an outer peripheral edge of the movable portion. An inner peripheral surface of the connection portion and the expansion portion are opposed with a spacing interposed therebetween.SELECTED DRAWING: Figure 2
【課題】仕切体から突出した筒状部と筒状の第2取付具の内周面との間に介されるダイヤフラムの外周部の耐久性を向上できる液封入式防振装置を提供すること。【解決手段】液封入式防振装置は、第2取付具の内側の液室を防振基体側の第1液室とダイヤフラム側の第2液室とに仕切る仕切体と、第2取付具の内周面に沿うように仕切体から第1液室とは反対側へ突出する筒状部と、を備える。筒状部は、仕切体から離れた位置で径方向外側へ張り出す張出部と、張出部と仕切体との間における筒状部の外周面による溝底面と、を備える。ダイヤフラムは、第2液室に面する膜状の可動部と、溝底面と第2取付具の内周面との間に挟持される環状の挟持部と、挟持部に対し内周面が凹んで挟持部と可動部の外周縁とを連結する環状の連結部と、を備える。連結部の内周面と張出部とは、隙間を空けて対向する。【選択図】図2
LIQUID SEALED VIBRATION CONTROL DEVICE
液封入式防振装置
2022-07-01
Patent
Electronic Resource
Japanese