| 摘要 |
PURPOSE:To lower dynamic spring constant in vibration of large amplitude by communicating sectioned liquid chambers via a limit passage and providing elastic member to bulkhead portion of plural liquid chambers. CONSTITUTION:Orifices 40 communicating an upper liquid chamber 26A and a lower liquid chamber 26B are formed on a bulkhead board 16 which sections a liquid chamber 26 into two 26A, 26B, and an elastic bulkhead member 32 is bound to a circular hole 28 of the center portion of the bulkhead board 16 by vulcanization. Therefore, volume elasticity of the liquid chamber 26A after generation of clogging of the orifices can be restrained and dynamic magnitude can be lowered even in vibration of large amplitude. |
