| 摘要 |
PROBLEM TO BE SOLVED: To obtain a good vibration isolating effect over a wide-band area by forming an inclined surface in the mount axial direction at the front end surface of an acting protrusion part, and forming the inclined surface to overlap a pressure receiving chamber with a projection in the mount axial direction. SOLUTION: A protruding block 26 protruding outward in a diameter direction from an inner cylinder metal fitting 12 side is disposed in an embedded condition respectively at the side wall parts 42, 42 of both the axial sides of a pocket part 34 consisting of a body rubber elastic body 16. Not only the protruding end surface but also the inclined surface 28 of the protruding block 26 are made so as to overlap the pocket part 34 with a projection in the mount axial direction by positioning its whole surface more outwards in a diametrical direction than the bottom surface 40 of the pocket part 34. If vibration in the diametrical direction is inputted, the inner and outer cylinder metal fittings 12, 14 become eccentric relatively and the volume of the pressure receiving chamber 46 is changed relatively in a circumferential direction to generate flowing of fluid in the pressure receiving chamber 46, and a vibration isolation effect is exhibited. The pressure receiving chamber 46 are formed with a sufficiently large cross-sectional area over the whole periphery in the circumferential direction, therefore, it is possible to obtain an vibration isolation effect against high-frequency vibration. |
