| 摘要 |
PROBLEM TO BE SOLVED: To provide excellent vibration performance to vibration in each direction by freely setting dynamic spring characteristics in axial and diametric directions. SOLUTION: When a mount case 1 and a boss 2 are relatively displaced to each other in the axial direction, damping is achieved by liquid column resonance in a main orifice C between a first liquid chamber A and a second liquid chamber B while a main elastic body 3 receives deformation. The boss 2 axially slides on an inner circumference of an auxiliary elastic body 51 without giving axial deformation to the auxiliary elastic body 51. Axial dynamic spring characteristics are not affected by diametric dynamic spring characteristics by the auxiliary elastic body 51 and an auxiliary orifice E. When the mount case 1 and the boss 2 are relatively displaced in the diametric direction, the auxiliary elastic body 51 receives diametric deformation by the boss 2 inserted to its inner circumference, and the volume of an auxiliary liquid chamber D in it is changed. Though damping by liquid column resonance in the auxiliary orifice E is achieved, volume of the first liquid chamber A is not changed, thereby diametric dynamic spring characteristics by the auxiliary orifice E is not affected by axial dynamic spring characteristics by the main orifice C. |
