To provide a vibration isolator of a novel structure capable of reducing distortion of a body rubber elastic body and improving durability with respect to input in the same inclined direction as a tapered outer peripheral surface of the body rubber elastic body.SOLUTION: In a vibration isolator 10, an inner fitting member 12 enters inward in an axial direction from a small diameter side end part 48 of a body rubber elastic body 16 having a tapered outer peripheral surface 60 and is fastened to the body rubber elastic body 16, and an outer fitting member 14 is fastened with an outer peripheral surface of a large diameter side end part 50 of the body rubber elastic body 16. An axial direction intermediate part entering into the body rubber elastic body 16 in the inner fitting member 12 is provided with a circumferential groove-shaped recess 36 which opens on the outer peripheral surface and extends in a circumferential direction. On both sides in the axial direction of the circumferential groove-shaped recess 36, an outer peripheral projection 40 of a larger diameter than the circumferential groove-shaped recess 36 is provided on both sides in the axial direction, and the outer peripheral surface of the circumferential groove shape recess 36 and the inner peripheral surface of the outer fitting member 14 are coupled by the body rubber elastic body 16 of a solid structure in the same inclined direction as the tapered outer peripheral surface 60.SELECTED DRAWING: Figure 1
【課題】本体ゴム弾性体のテーパ状外周面と同じ傾斜方向の入力に対して、本体ゴム弾性体の歪を低減して耐久性の向上を図ることができる、新規な構造の防振装置を提供すること。【解決手段】テーパ状外周面60を有する本体ゴム弾性体16に対して、インナ取付部材12が本体ゴム弾性体16の小径側端部48から軸方向内方に入り込んで固着されていると共に、アウタ取付部材14が本体ゴム弾性体16の大径側端部50の外周面に固着された防振装置10であって、インナ取付部材12において本体ゴム弾性体16に入り込んだ軸方向中間部分には外周面に開口して周方向に延びる周溝状凹部36が設けられていると共に、周溝状凹部36の軸方向両側には周溝状凹部36よりも大径の外周突部40が設けられており、周溝状凹部36の外周面とアウタ取付部材14の内周面とが、テーパ状外周面60と同じ傾斜方向で中実構造の本体ゴム弾性体16により連結されている。【選択図】図1
VIBRATION ISOLATOR
防振装置
2020-01-23
Patent
Electronic Resource
Japanese