| 摘要 |
PROBLEM TO BE SOLVED: To provide a bush which improves durability and sufficiently ensure rigidity in the axial direction of a flange and has a spring characteristic of a direction perpendicular to an axis which is uniform in all directions. SOLUTION: A bush 10 has a structure of the triple cylinders of an outer cylinder 18, a intermediate cylinder 12 and an inner cylinder 16. Rubber elastic body 21 is vulcanized between the intermediate cylinder 12 and the inner cylinder 16 and rubber elastic material 22 integrated with the rubber elastic body 21 is vulcanized between the outer cylinder 18 and the intermediate cylinder 12. Since three through holes 14A are made in the circumferential wall 14 of the intermediate cylinder 12 along the circumferential direction at equal intervals, when the bush is spun, sufficient compression force is applied on the rubber elastic body 21 via the through hole 14A. |
