JPH0475255U

JPH0475255U -

Info

Publication number: JPH0475255U
Application number: JP11843690U
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
図イは同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
曲線を示すグラフである。第３図イは同実施例の
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、１……防振基体、２……メンバー
側取付金具、３……本体金具、４……液室、６…
…剛性ケース、７……ストツパ、８……第１オリ
フイス、９……第１仕切板、１０……第１副液室
、１１……第１ダイヤフラム、１２……空気密閉
室、１３……第２オリフイス、１４……第２仕切
板、１５……第２副液室、１６……第２ダイヤフ
ラム、１７……電磁石、１８……液室区切板。 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 same embodiment is set for idling, and Figure 2B is a graph showing the same damping coefficient curve. FIG. 3A is a graph showing a spring constant curve when the same embodiment is set for running, and FIG. 3B is a graph showing the same damping coefficient curve. A...First orifice structure, B...Second orifice structure, 1...Vibration isolation base, 2...Member side mounting bracket, 3...Main body bracket, 4...Liquid chamber, 6...
... Rigid case, 7 ... Stopper, 8 ... First orifice, 9 ... First partition plate, 10 ... First sub-liquid chamber, 11 ... First diaphragm, 12 ... Air-tight chamber, 13 ... 2nd orifice, 14...second partition plate, 15...second sub-liquid chamber, 16...second diaphragm, 17...electromagnet, 18...liquid chamber partition plate.

Claims

[Scope of utility model registration request]

A liquid-filled vibration-proof mount in which a vibration-proof base made of a rubber elastic body is attached to the upper opening of a cylindrical body metal fitting, and a member-side mounting bracket is attached to the lower opening of the cylindrical body metal fitting in a liquid-tight manner to form a liquid chamber. A cylindrical rigid case having upper and lower openings is housed in the liquid chamber, and first and second orifice structures are provided in the upper and lower openings of the case, respectively, and the first orifice structure is A first partition plate is provided in contact with the inner wall of the upper opening of the rigid case and has a first orifice that communicates with the inside and outside, and a first sub-liquid chamber is formed below the partition plate to form a sealed state. The second orifice structure is composed of an attached first diaphragm and a sealed air chamber formed below the diaphragm, and the second orifice structure is provided in contact with the inner wall of the lower opening of the rigid case and communicates with the inside and outside. a second diaphragm formed in a sealed state with a second auxiliary liquid chamber formed above the partition plate; and a sealed air chamber formed above the diaphragm. The rigid case is movable up and down as a capsule in a floating state in the liquid chamber, and the member-side mounting bracket has an electromagnet that is energized to move the rigid case or the second partition plate. A controlled liquid-filled vibration-proof mount, characterized in that it can be attracted to a liquid chamber partition plate provided above the electromagnet, and is configured to close the liquid inlet and outlet of the second orifice by the attraction.