FLUID FILLED VIBRATION CONTROL DEVICE

PROBLEM TO BE SOLVED: To provide a fluid filled vibration control device including an amplitude dependency type valve means having a new structure capable of effectively restricting occurrence of irregular sound or shock caused by elastic deformation of the valve-like rubber protrusions constituting such an amplitude dependency type valve means while avoiding bad influence against vibration control performance as much as possible.SOLUTION: This invention relates to a fluid filled vibration control device 10 constituted in such a way that an opening edge part positioned at an opposite side of a communication passage 96 in respect to a valve-like rubber protrusion 98 is integrally formed with a plurality of shock absorbing protrusions 104 protruded on the same plane as that of the rubber protrusions 98 at a rubber elastic plate 94 and protruded at a lower height than that of the valve-like rubber protrusions 98 and at the same time, protrusion heights of the impact protrusions 104 are different in a direction of slits of the communication passage 96 and there are provided impact protrusions 104 of which protrusion heights are higher than those of both end portions 108, 108 at central portions 106 in the directions of the slits at the communication passage 96.SELECTED DRAWING: Figure 2 【課題】振幅依存型の弁手段を備えた流体封入式防振装置であって、防振性能への悪影響を可及的に回避しつつ、かかる振幅依存型の弁手段を構成する弁状ゴム突起の弾性変形時の打ち当りによる異音や衝撃などの発生を効果的に抑えることのできる新規な構造の流体封入式防振装置を提供する。【解決手段】流体封入式防振装置１０において、弁状ゴム突起９８に対して連通路９６の対岸側に位置する開口縁部には、ゴム弾性板９４において弁状ゴム突起９８と同じ面上で且つ弁状ゴム突起９８より小さい高さで突出する複数の緩衝突起１０４が一体形成されていると共に、緩衝突起１０４の突出高さが連通路９６のスリット方向で異なっており、連通路９６のスリット方向の中央部分１０６において両端部分１０８，１０８よりも突出高さが大きい緩衝突起１０４が設けられている。【選択図】図２