JPH0475256U

JPH0475256U -

Info

Publication number: JPH0475256U
Application number: JP11843790U
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図は本考案の第１の実施例を示す断面図、
第２図は第２の実施例を示す断面図、第３図イは
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３図ロは同減衰係数曲線を示
すグラフ、第４図イは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４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……密閉空気圧、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、２２……
弾性体、２３……ヘツド、２４……バツクアツプ
スプリング、２５……ロツド。 FIG. 1 is a sectional view showing a first embodiment of the present invention;
FIG. 2 is a sectional view showing the second embodiment, FIG. 3 A is a graph showing a spring constant curve when the embodiment is set for idling, and FIG. 3 B is a graph showing the same damping coefficient curve. FIG. 4A is a graph showing the spring constant curve of the embodiment when set for running, and FIG. 4B 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 pressure, 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, 22...
Elastic body, 23...head, 24...backup spring, 25...rod.

Claims

[Scope of utility model registration request]

In a liquid-filled vibration-proof mount in which a vibration-proof base made of a rubber elastic body and a rubber film face each other and are connected liquid-tightly by a peripheral wall to form a liquid chamber, a first and a second are provided in the liquid chamber. Two orifice structures are provided, and the first orifice structure includes a bowl-shaped rigid case housed in the liquid chamber, and a first orifice structure that forms a sealed air chamber within the case and is installed in a sealed state. a first diaphragm, and a first partition that is disposed at the case opening with a distance from the diaphragm, forms a first sub-liquid chamber with the diaphragm, and forms a first orifice along the periphery near the inner wall of the case; a second orifice structure,
a second diaphragm made of the rubber film; a second auxiliary liquid chamber formed on the liquid chamber side of the diaphragm; and a second partition plate forming a second diaphragm, and an orifice control means for selectively closing and opening the second orifice structure is provided on the anti-liquid chamber side of the second diaphragm. 1. At least a portion of the peripheral edge of the bowl-shaped rigid case of the orifice structure and the inner surface of the mount peripheral wall,
A controlled liquid-filled anti-vibration mount characterized by being connected using an elastic body.