To change vibration attenuating characteristics of a vehicular vibration isolating device according to a flowing direction of liquid, without causing the enlargement of the vehicular vibration isolating device, an increase in manufacturing costs, and a problem of durability.SOLUTION: A vehicular vibration isolating device is equipped with a first attaching member to be attached to a first member, a second attaching member to be attached to a second member, a first liquid chamber 10 and a second liquid chamber 11 that change capacities according to the relative displacement of the first attaching member and the second attaching member, and an orifice passage 12 circulating liquid between the first liquid chamber 10 and the second liquid chamber 11 according to the change of the capacities of the first liquid chamber 10 and the second liquid chamber 11. The liquid includes a non-Newtonian fluid whose viscosity lowers according to a rise of shear velocity. The orifice passage 12 includes a first communication port 31 communicating with the first liquid chamber 10, and a second communication port 32 communicating with the second liquid chamber 11. An opening area of the first communication port 31 is different from an opening area of the second communication port 32.SELECTED DRAWING: Figure 3
【課題】 車両用防振装置の大型化、製造コストの上昇、耐久性の問題を生じさせずに、車両用防振装置の振動減衰特性を液体の流れ方向によって変化させる。【解決手段】 車両用防振装置であって、第1部材に取り付けられる第1取付部材と、第2部材に取り付けられる第2取付部材と、第1取付部材と第2取付部材の相対変位に応じて容積を変化させる第1液室10及び第2液室11と、第1液室10と第2液室11の容積の変化に応じて第1液室10と第2液室11の間で液体を流通させるオリフィス通路12とを備え、液体が、せん断速度の上昇に応じて粘度が低下する非ニュートン流体を含み、オリフィス通路12は、第1液室10と連通する第1連通口31と、第2液室11と連通する第2連通口32とを含み、第1連通口31の開口面積が、第2連通口32の開口面積とは異なっている。【選択図】 図3
VEHICULAR VIBRATION ISOLATING DEVICE
車両用防振装置
2021-04-22
Patent
Electronic Resource
Japanese