| 摘要 |
PURPOSE:To sufficiently reduce an input vibration of intermediate to high frequency band by integrally arranging a displacement restricting member, extended in the axial direction of a bush, in a tubular rubber elastic unit further in a location where the deformation of axial direction-both side wall parts of a fluid chamber, arranging an umbrella member inputting vibration to be isolated, can be substantially restricted. CONSTITUTION:Between a slit 18 and a through hole 22, a restricting rod 60, which presents almost a column shape serving as the displacement restricting member, is arranged through in the axial direction and integrally mounted by vulcanization adhesion to a rubber elastic unit 14. Consequently, when a static initial load acts by weight of an engine unit, the elastic deformation of the rubber elastic unit 14, especially in the axial direction in a side forming the first fluid chamber 36, is restricted by the restricting rod 60. Accordingly, effectively suppressing the swelling deformation in the mount axial direction of axial direction both side wall parts in the first fluid chamber 36, thus a clearance of a narrow throttle part 58, formed between an internal wall surface of the fluid chamber 36 and an umbrella, is usefully reduced or prevented in the change following the action of the initial load. |
