| 摘要 |
PURPOSE:To reduce a cost and to stabilize a cross section shape and a function of an orifice passage. CONSTITUTION:Groove parts 24, 25 serving as an orifice passage 22 are directly formed in a cylindrical general part 23a by unevenly bending the general part, 23a of an intermediate cylinder 23, which is arranged between an inner cylinder 1 and an outer cylinder 2 so as to be buried in a rubber body 4. As the groove parts 24, 25 are covered by the outer cylinder 2, they function as the orifice passage connecting the first liquid chamber 12 and the second liquid chamber 13 together. |
