| 摘要 |
PROBLEM TO BE SOLVED: To achieve both low dynamic spring characteristics with respect to high frequency vibration in a twisting direction and high attenuation characteristics with respect to low frequency vibration in an axially orthogonal direction, while preventing slipping off of polyurethane foam.SOLUTION: A pair of first elastic connection parts 20 opposed to a first axially orthogonal direction Y1 is disposed to a rubber elastic body 16 interposed between an inner tube 12 and an outer tube 14. A pair of hollow parts 22 formed by penetrating in an axial direction at circumferential positions excluding the first elastic connection parts 20, and a pair of second elastic connection parts 30 made from polyurethane foam are disposed in a second axially orthogonal direction Y2 perpendicular to the first axially orthogonal direction Y1. The second elastic connection parts 30 are subjected to foam molding in a state where they are adhered to inner peripheral faces and outer peripheral faces of the hollow parts 22, after vulcanizing molding of the elastic body 16. |
