Vibration-preventing rubber device

摘要

This invention relates to a vibration-preventing device wherein a partition wall is positioned outside of an inner cylinder and is interposed between an upper plate and a lower plate. The partition wall includes a hub portion. The upper plate and lower plate are connected to the inner cylinder. An upper vibration-preventing rubber member and an upper elastic film are interposed between the partition wall and the upper plate and cooperate to define an enclosure which functions as an upper damper liquid chamber. A lower vibration-preventing rubber member and a lower elastic film are interposed between the partition wall and the lower plate and cooperate to form an enclosure which functions as a lower damper liquid chamber. The upper damper liquid chamber communicates with the lower damper liquid chamber through an orifice. An elastic element in a cylindrical form or the like is interposed between confronting parts of an outer peripheral surface of the inner cylinder and an inner peripheral surface of the hub of the partition wall.