JPH0475253U

JPH0475253U -

Info

Publication number: JPH0475253U
Application number: JP11843490U
Authority: JP
Priority date: 1990-11-09
Filing date: 1990-11-09
Publication date: 1992-06-30

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図イは第１実施例をアイドル時用に設定した際の
ばね定数曲線を示すグラフ、第２図ロは同減衰係
数曲線を示すグラフ、第３図イは第１実施例の走
行時用に設定した際のばね定数曲線を示すグラフ
、第３図ロは同減衰係数曲線を示すグラフである
。Ａ……第１オリフイス構造体、Ｂ……第２オリ
フイス構造体、３……第２ダイヤフラム、４……
液室、６……剛性ケース、７……密閉空気室、８
……第１ダイヤフラム、９……第１副液室、１０
……第１オリフイス、１１……第１仕切板、１２
……第２副液室、１３……第２オリフイス、１４
……第２仕切板、１５……バキユーム作動室、１
７……第２空気室、１８……プレート。 Fig. 1 is a sectional view showing one embodiment of the present invention;
Figure A is a graph showing the spring constant curve when the first embodiment is set for idling, Figure 2 B is a graph showing the same damping coefficient curve, and Figure 3 A is a graph showing the spring constant curve when the first embodiment is set for running. A graph showing the spring constant curve when set, and FIG. 3(b) is a graph showing the same damping coefficient curve. A...First orifice structure, B...Second orifice structure, 3...Second diaphragm, 4...
Liquid chamber, 6... Rigid case, 7... Sealed air chamber, 8
...First diaphragm, 9...First subliquid chamber, 10
...First orifice, 11...First partition plate, 12
...Second sub-liquid chamber, 13...Second orifice, 14
... Second partition plate, 15 ... Vacuum operating chamber, 1
7...Second air chamber, 18...Plate.

Claims

[Scope of Claim for Utility Model Registration] 1. A liquid-filled vibration-proof mount in which a vibration-proof base made of a rubber elastic body and a rubber film are faced to each other and are connected liquid-tightly by a peripheral wall to form a liquid chamber, Two orifice structures, a first and a second, are provided in the liquid chamber, and the first orifice structure includes a rigid case housed in the liquid chamber and a sealed air chamber formed within the case to form a seal. A first diaphragm is attached to the diaphragm, and a first auxiliary liquid chamber is formed with the diaphragm, and a first orifice is disposed at the opening of the case with a space between the diaphragm and the diaphragm. The second orifice structure includes a second diaphragm made of the rubber film, and a second sub-liquid chamber formed on the liquid chamber side of the diaphragm. and a second partition plate having a communication hole around the periphery that communicates with the second sub-liquid chamber to form a second orifice; A plate is provided in close contact with the diaphragm, an air pressure adjustment chamber is provided with the plate as one wall, and an air pressure adjustment device for raising and lowering the plate is connected to the adjustment chamber, and the air pressure adjustment chamber that is formed when the plate is lowered is connected to the adjustment chamber. A controlled liquid-filled anti-vibration mount characterized in that two air chambers are provided with air holes that communicate the second air chamber with an external space. 2. The liquid-filled vibration-isolating mount according to claim 1, wherein the first orifice structure is suspended within the liquid chamber using its rigid case as a capsule.