FLUID-FILLED VIBRATION CONTROL DEVICE

PROBLEM TO BE SOLVED: To enhance the durability of the sidewall part of a rubber elastic body of a fluid-filled vibration control device by reducing its tensile distortion caused by the input of vibration from an oblique direction, corresponding to the acceleration and deceleration of a vehicle. SOLUTION: This fluid-filled vibration control device is provided with an inner cylinder fitting 10; a pair of ring parts 21 coaxially disposed at both axial ends with a space outside of the inner cylinder fitting 10; a cylindrical intermediate fitting 20 having a connecting part 22 integrally connecting the ring parts and forming an aperture part 25 in between; a rubber elastic body 30 for connecting the intermediate fitting and the inner cylinder fitting and having recessed parts 33 and 34 corresponding to the aperture part; and an outer cylinder fitting 50 for blocking a space between itself and the intermediate fitting in a liquid-tight state with a rubber elastic body seal part 43 on the outer peripheral side of the rubber elastic body 30. In the rubber elastic body, the length of a first and a fourth diaphragm parts 36 and 39 respectively which are a pair of sidewall parts in one diagonal position with the inner cylinder fitting placed in between, out of sidewall parts provided in the orthogonal position to the connecting part and facing the longitudinal direction of the vehicle, is longer than the length of a second and third diaphragm parts in the other diagonal position.