| 摘要 |
PROBLEM TO BE SOLVED: To realize low dynamic springiness in middle/high frequency area of a liquid seal bush, form directivity for vibration input in perpendicular two directions, and sufficiently retain balance of elasticity. SOLUTION: This liquid seal bush comprises an outer cylinder 1, an inner cylinder 2 and an elastic member 3, and recessed parts 4, 5 are formed in the intermediate part of the elastic member 3 so as to form first and second liquid chambers 15, 16. The elastic member 3 between the recessed parts 4, 5 is made to serve as a partitioning wall 6, a lightening hole 7 is arranged in the partitioning wall 6, a pair of thin wall parts 10, 11 opposed to each other across the hole 7 is formed, and an outer edge part in the base part 8 of the partitioning wall 6 is not connected with but tightly stuck to the inner side of the outer cylinder 1. The first and second liquid chambers 15, 16 are arranged along upper and lower vibration input directions so that shearing deformation is generated and also low dynamic springiness is realized by the film resonance of the thin wall parts 10, 11. While, the partitioning wall 6 is arranged along front and rear vibration input directions so that compression deformation is generated. |
