VIBRATION-PROOF DEVICE

PROBLEM TO BE SOLVED: To provide a vibration-proof device having a novel configuration enabling to easily and stably position an inner bracket and a portal member in their relative directions while efficiently securing the pressure receiving area of a rebound stopper mechanism.SOLUTION: The vibration-proof device 10 includes the inner bracket 64 fixed to a first mounting member 12 and provided with a stopper rubber 90, and the portal member 82 mounted on a second mounting member 14 to cross the inner bracket 64. The inner bracket 64 has an elastic abutting protruded part 106 formed integrally with the stopper rubber 90 while being protruded from a position deviating from the portal member 82 in the cross direction toward the portal member 82. The elastic abutting protruded part 106 being alone before mounted abuts laterally on the across-the-width edge of the portal member 82 and overlaps therewith.