JPH0185548U

JPH0185548U -

Info

Publication number: JPH0185548U
Application number: JP18178487U
Authority: JP
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-06-07

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す防振装置の垂
直断面図で第２図の―線に沿うもの、第２図
は仕切壁を構成する中板と下板の部分断面平面図
で第１図の―線に沿うもの、第３図は仕切壁
を構成する上板の平面図、第４図は防振装置の動
バネ定数および減衰係数の周波数特性図、第５図
は従来例を示す防振装置の断面図である。１…ゴム弾性体（室壁）、２…ゴムシート（室
壁）、３…仕切壁、３ａ…液流通路、３１…上板
、３１１…一端開口、３２…下板、３３…中板、
４，５…電磁コイル（弁駆動手段）、４１，５１
…分岐端開口、６，７…弁体、Ａ…主液室（第１
の液室）、Ｂ…副液室（第２の液室）。 Figure 1 is a vertical cross-sectional view of a vibration isolator according to an embodiment of the present invention taken along the line - in Figure 2, and Figure 2 is a partial cross-sectional plan view of the middle plate and lower plate that make up the partition wall. Figure 1 is along the - line, Figure 3 is a plan view of the upper plate constituting the partition wall, Figure 4 is a frequency characteristic diagram of the dynamic spring constant and damping coefficient of the vibration isolator, and Figure 5 is the conventional example. FIG. 2 is a sectional view of the vibration isolator. DESCRIPTION OF SYMBOLS 1...Rubber elastic body (chamber wall), 2...Rubber sheet (chamber wall), 3...Partition wall, 3a...liquid flow path, 31...upper plate, 311...one end opening, 32...lower plate, 33...middle plate,
4, 5... Electromagnetic coil (valve driving means), 41, 51
... Branch end opening, 6, 7... Valve body, A... Main liquid chamber (first
(liquid chamber), B...auxiliary liquid chamber (second liquid chamber).

Claims

[Scope of utility model registration request]

In a liquid-filled vibration isolator that is installed in a vehicle and has first and second liquid chambers whose chamber walls are elastic bodies that are deformed by vibration input, and a partition wall that partitions these liquid chambers, a A liquid flow passage is provided and one end thereof is opened to the first liquid chamber, and
The liquid flow path is branched in the middle, and one of the branched ends is opened to the second liquid chamber at a position close to the one end opening, and the other branched end is opened to the second liquid chamber at a position far from the one end opening. open into the chamber,
A liquid-filled vibration isolator for a vehicle, characterized in that each of the branch end openings is provided with a valve element for opening and closing the opening, and a valve driving means is provided for operating each of the valve elements according to the driving condition of the vehicle. .