| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid-sealed vibration isolator of a novel structure which can advantageously exhibit a vibration isolating effect against the vibration of a plurality of frequencies or the vibration of a wide-band frequency while being simplified in structure. SOLUTION: An opening window 30 serving as one liquid chamber formed by connecting a pressure receiving chamber 50 and an equilibrium chamber 52 to each other is formed at a partitioning member 24, the opening window 30 is kept in a closed state by pressing the central part 82 of a flexible rubber film 38 against the opening peripheral part of the opening window 30 of the partitioning member 24 by using an output member 62 of an air-pressure type actuator 58 which is arranged at a side opposite to the equilibrium chamber 52 with the flexible rubber film 38 in between, the elastic deformation of the inside of a recess 84 of the flexible rubber film 38 is permitted by forming the recess 84 on the tip face of the output member 62, and a liquid-pressure absorbing mechanism with a deformation-amount limit mechanism is arranged which limits the amount of the elastic deformation of the flexible rubber film 38 by making the flexible rubber film 38 abut on the inside face of the recess 84. By this, a valve body containing the liquid-pressure absorbing mechanism is arranged which opens and closes the opening window 30 by the operation of the air-pressure type actuator 58. COPYRIGHT: (C)2008,JPO&INPIT |
