PROBLEM TO BE SOLVED: To correspond to a plurality of vibration characteristics with minimum required change to enable commonization of a component and improvement of degree of freedom for design.SOLUTION: A rubber bush 1 for a railway vehicle includes an axial member 2, an external cylinder member 3 arranged coaxially outside the axial member 2, and a rubber elastic body 4 elastically connecting the axial member 2 and the external cylinder member 3. The rubber elastic body 4 includes liquid chambers 9, 9 in which fluid is sealed, at point symmetrical positions with the axial member 2 as a center, the axial member 2 includes a separate flow passage member 12 having a spiral orifice 14 communicating with the liquid chambers 9, 9, and thereby vibration characteristics can be changed by replacement of a flow passage member 12 with a different form of the orifice 14.SELECTED DRAWING: Figure 1
【課題】必要最小限の変更で複数の振動特性に対応可能として、部品の共通化と設計自由度の向上を図る。【解決手段】鉄道車両用ゴムブッシュ1は、軸心部材2と、軸心部材2の外側に同軸配置される外筒部材3と、軸心部材2と外筒部材3とを弾性的に連結するゴム弾性体4と、を含み、ゴム弾性体4は、軸心部材2を中心とした点対称位置に、流体を封入した液室9,9を有し、軸心部材2は、液室9,9同士を連通させる螺旋状のオリフィス14を有する別体の流路部材12を備えて、オリフィス14の形態が異なる流路部材12の交換によって振動特性が変更可能となっている。【選択図】図1
RUBBER BUSH FOR RAILWAY VEHICLE
鉄道車両用ゴムブッシュ
2017-05-18
Patent
Electronic Resource
Japanese