| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fluid filled vibration prevention device of a new structure, capable of efficiently exhibiting a vibration prevention effect based on flow actuation of a fluid upon the usual inputting of vibration and preventing occurrence of abnormal noise due to cavitation upon the shocking inputting of a large load without using a specified valve or the like, with a simple structure. <P>SOLUTION: In the fluid filled vibration prevention device 10, a plurality of pores 56 are formed on a partitioning member 40 which separates a pressure receiving chamber 46 from an equilibrium chamber 48, both end parts of respective pores 56 are opened to each one side of the pressure receiving chamber 46 and the equilibrium chamber 48 and the ratio (a/l) of passage cross-section area (a) to passage length (l) of the respective pores 56 is set to be smaller than the ratio (A/L) of passage cross-section area (A) to the passage length (L) of orifice passage 54. <P>COPYRIGHT: (C)2012,JPO&INPIT |
