To provide a vibration isolation device in which stress concentration occurring in a bracket is suppressed at a vibration input time under a specific condition.SOLUTION: A vibration isolation device 1 comprises: a fitting member 2; an elastic member 3; a synthetic resin bracket 4 connected to the fitting member 2 via the elastic member 3; and a cylindrical coupling metal fitting 5 having a through-hole O5, the bracket 4 and the coupling metal fitting 5 being integrally formed. A vibration input position P does not match a virtual line L1 passing through a central axis O5 of two through-holes 5h of the coupling metal fittings 5 in plan view, the coupling metal fitting 5 has a flange part 51 on the edge side close to the vibration input position P in the direction along the central axis O5, the flange part 51 includes: a first outermost peripheral edge 51a; and a second outermost peripheral edge 51b, the length L51a to the first outermost peripheral edge 51a from the central axis O5 of the through-hole 5h as a reference is longer than the length L51b to the second outermost peripheral edge 51b.SELECTED DRAWING: Figure 2
【課題】特定の条件下での振動の入力時において、ブラケットに生じる応力集中が抑制された防振装置を提供する。【解決手段】防振装置1は、取付部材2と、弾性部材3と、弾性部材3を介して取付部材2に連結されている、合成樹脂製のブラケット4と、貫通孔O5を有した筒状の締結用金具5と、を有し、ブラケット4と締結用金具5とが一体に形成された防振装置である。振動入力位置Pは、平面視において、2つの締結用金具5の貫通孔5hの中心軸O5を通る仮想線L1と一致しない位置であり、締結用金具5は、中心軸O5に沿う方向の振動の入力位置Pに近い端縁側にフランジ部51を有しており、フランジ部51は、第1最外周縁51aと、第2最外周縁51bとを有し、貫通孔5hの中心軸O5を基準とした、第1最外周縁51aまでの長さL51aが第2最外周縁51bまでの長さL51bよりも長い。【選択図】図2
VIBRATION ISOLATION DEVICE
防振装置
2019-06-06
Patent
Elektronische Ressource
Japanisch
VIBRATION ISOLATION DEVICE AND VIBRATION ISOLATION UNIT
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