JPH0253541U

JPH0253541U -

Info

Publication number: JPH0253541U
Application number: JP13263588U
Authority: JP
Priority date: 1988-10-11
Filing date: 1988-10-11
Publication date: 1990-04-18

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す液封入防振装
置の全体縦断面図、第２図は仕切板の平面図、第
３図および第４図は装置の作動を示すそれぞれ全
体縦断面図、第５図および第６図はそれぞれ動バ
ネ定数および減衰係数の周波数特性図である。１……防振ゴム体、２……ゴム膜、３……仕切
板、３１，３２，３３……絞り流路、３１１，３
３１……流路開口、４Ａ，４Ｂ……ピストン部材
、Ａ……主液室、Ｂ……副液室。 Fig. 1 is an overall vertical sectional view of a liquid-filled vibration isolator showing an embodiment of the present invention, Fig. 2 is a plan view of a partition plate, and Figs. 3 and 4 are overall longitudinal sectional views showing the operation of the device. 5 and 6 are frequency characteristic diagrams of the dynamic spring constant and damping coefficient, respectively. 1... Vibration-proof rubber body, 2... Rubber membrane, 3... Partition plate, 31, 32, 33... Throttle channel, 311, 3
31... Channel opening, 4A, 4B... Piston member, A... Main liquid chamber, B... Sub-liquid chamber.

Claims

[Scope of utility model registration request]

A main liquid chamber is provided in the vibration-proof rubber body that supports the vibrating body, and a liquid enclosure is provided with a sub-liquid chamber that is separated from the main liquid chamber by a partition plate with a constricted flow path and has a rubber membrane as a chamber wall. In the vibration isolating device, a plurality of the throttle channels are formed with different lengths and are opened at different positions on the partition plate, and behind the rubber membrane facing the partition plate, corresponding to the openings of the throttle channels are formed. A piston member is provided at each position, and these piston members are selectively advanced in accordance with the vibration area of the vibrating body to press the rubber membrane against the partition plate surface and close the corresponding throttle channel opening. Features a liquid-filled vibration isolator.