| 摘要 |
PURPOSE:To enlarge a pressure receiving area for a rubber body on both sides of a window part in the axial direction of an intermediate cylinder. CONSTITUTION:An intermediate cylinder 25 is formed by fitting a flange ring 27, which is bent to have its cross section formed almost in a U shape, to both ends of a hollow cylindric shaped barrel part 26. A large pressure receiving area is maintained when a rubber body 4 makes its elastic deformation based on relative displacement, in the vertical direction, to an inner cylinder 1 and an outer cylinder 2 by leaving the portion excluding the window part 10 among the total length of the barrel part 26 as pressure receiving area as it is. |
