| 摘要 |
PURPOSE:To make it possible to alter the set spring constants of rubbers to two or more stages, by supplying or discharging a working fluid into or out of chambers provided in the rubbers. CONSTITUTION:Two annular rubbers 21 are placed on both the sides of the periphery 31 of the mounting hole of a vehicle body and interposed between two flange members 15, 25. Annular chambers 22, 24 are provided in the inner portions of the annular rubbers 21. The set spring constants of the rubbers 21 can be altered by supplying or discharging a working fluid into or out of the annular chambers 22, 24 through a passage 3 in a rod 1 extending through the annular rubbers. |
