| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid-sealed mount which can surely perform switching control of a characteristic by a fluid pressure and display excellent damping force. SOLUTION: A first orifice C is left as always opened, and a valve part 7 holds a second orifice D in a blocked condition by a plate spring 8 by a pressure guide chamber E left as opened to the atmosphere relating to a displacement input of low frequency large amplitude, so as to repeatedly move a sealed liquid between first/second liquid chambers A, B through the first orifice C according to the displacement input of low frequency large amplitude and generate large damping force to appear. Relating to a continuous vibration input of small amplitude in a medium high frequency region, the valve part 7 is displaced with the plate spring 8 by load of prescribed value or more in the valve opening direction through introduction of a negative pressure into the pressure guide chamber E. In this way, by opening the second orifice D, the sealed liquid is moved through the second orifice D of small fluidic resistance between the first/second liquid chambers A, B according to the vibration input of small amplitude in the medium high frequency region, and a dynamic spring constant is lowered down. |
