To provide a liquid seal bush which generates high damping force during input of vibration even if downsizing or weight reduction is achieved.SOLUTION: A liquid seal bush 1 includes: an outer cylinder 11 attached to one of a vibration generation part 31 and a vibration receiving part, an inner cylinder 12 attached to the other and disposed at the inner side of the outer cylinder; and an elastic body 14 connecting the outer cylinder with the inner cylinder. Two liquid chambers 15 in which a working fluid is enclosed and an orifice passage 16 allowing the liquid chambers to communicate with each other are disposed at the inner side of the outer cylinder. In the orifice passage, a mass member 27 is disposed that may move in a circulation direction of the working fluid moving between the two liquid chambers in the orifice passage. The mass part includes a body part 27a which is formed by a material having a specific gravity larger than that of the working fluid. A size in the mass member as seen in the circulation direction is larger than a size in the orifice passage as seen in the circulation direction.SELECTED DRAWING: Figure 1
【課題】小型化、若しくは軽量化を図っても、振動の入力時に高い減衰力を発生させる。【解決手段】振動発生部31および振動受部のうちのいずれか一方に取付けられる外筒11、および他方に取付けられるとともに、外筒の内側に配設された内筒12と、外筒と内筒とを連結した弾性体14と、を備え、外筒の内側に、作動液が封入された2つの液室15、およびこれらの液室同士を連通するオリフィス通路16が配設された液封ブッシュ1であって、オリフィス通路内に、このオリフィス通路内で2つの液室同士の間を往来する作動液の流通方向に移動可能なマス部材27が配設され、マス部材は、作動液より比重の大きい材質で形成された本体部27aを備え、マス部材における前記流通方向の大きさは、オリフィス通路における前記流通方向の大きさより大きい。【選択図】図1
LIQUID SEAL BUSH AND SUSPENSION DEVICE
液封ブッシュ、およびサスペンション装置
2020-12-17
Patent
Electronic Resource
Japanese