NEGATIVE PRESSURE CONTROL TYPE FLUID-FILLED VIBRATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a negative pressure control type fluid-filled vibration control device having a novel structure for enhancing the manufacturing efficiency, and stabilizing the opening/closing operation of an orifice passage.;SOLUTION: When negative pressure is applied to a working pneumatic chamber 160 so that a pressing member 150 is separated and displaced from an opening of a second orifice passage 126 in a partition member 88, a flexible rubber membrane 34 and the pressing member 150 which are formed as separate parts are held to be brought in contact with each other by using a contact repulsion force to the partition member 88 of a cylindrical resilient protrusion 40 depending the resilience of the cylindrical resilient protrusion 40 formed in the central portion of the flexible rubber membrane 34.;COPYRIGHT: (C)2010,JPO&INPIT