To restrain an abnormal sound caused by collapse of cavitation from being sensed by an occupant.SOLUTION: A vibration-proofing device 1 comprises: a cylindrical first attachment member 11 connected to one of a vibration producing part and a vibration receiving part and a second attachment member 12 connected to the other; an elastic body 13 for connecting the first attachment member to the second attachment member; and a partitioning member 16 which partitions a liquid chamber 19 in the first attachment member into a first liquid chamber 14 having the elastic body at a part of a partition wall, and a second liquid chamber 15 along an axial direction along a center axis O of the first attachment member, and in which an orifice passage 24 for making the first liquid chamber and the second liquid chamber communicate with each other is formed. In the elastic body, a plurality of protrusions 26 extending to a peripheral direction are formed at an inner face 27 defining the first liquid chamber along a radial direction.SELECTED DRAWING: Figure 1
【課題】乗員がキャビテーション崩壊に起因した異音を感知するのを抑制する。【解決手段】振動発生部および振動受部のうちのいずれか一方に連結される筒状の第1取付部材11、および他方に連結される第2取付部材12と、第1取付部材と第2取付部材とを連結した弾性体13と、第1取付部材内の液室19を、第1取付部材の中心軸線Oに沿う軸方向に沿って、弾性体を隔壁の一部に有する第1液室14、および第2液室15に仕切るとともに、第1液室と第2液室とを連通するオリフィス通路24が形成された仕切部材16と、を備えた防振装置1であって、弾性体において、第1液室を画成する内面27に、周方向に延びる突条部26が、径方向に沿って複数形成されている。【選択図】図1
VIBRATION-PROOFING DEVICE
防振装置
2019-07-04
Patent
Electronic Resource
Japanese