FLUID-FILLED DAMPING DEVICE

PROBLEM TO BE SOLVED: To provide a fluid-filled damping device with a novel structure, which has reduced number of components in a simple structure, obtains an effective damping effect with respect to high-frequency small-amplitude vibration, and reduces cavitation noise to be caused by an excessive negative pressure to a pressure receiving chamber.SOLUTION: A circular movable member 66 is provided in a housing space 62 of a partition member 44. The movable member 66 is held by the partition member 44 in the axial direction in a clamping part 68. A movable part 72 is disposed on the outer circumference side of the clamping part 68. A hydraulic pressure absorbing mechanism is formed to transmit hydraulic pressure of the pressure receiving chamber 90 to a balancing chamber 92 by elastic deformation. A valve part 78 is disposed on the inner circumferential side of the clamping part 68. A relief mechanism is formed to reduce the negative pressure of the pressure receiving chamber 90 by elastic deformation. The movable member 66 is radially positioned with respect to the partition member 44 by contact with the inner circumferential surface of the housing space 62 of the valve part 78 to form a gap 89 radially between the movable part 72 and the housing space 62.