| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid-filled vibration control device suppressing the rise of a dynamic spring constant in the input of vibration while efficiently increasing damping of input vibration obtained by liquid flowing in a limit passage. SOLUTION: A pressure receiving liquid chamber 46 and a pressure receiving liquid chamber 48 are arranged on one end side and the other end side between an outer cylinder 12 and a mounting member 20 along a main amplitude direction (a shaft right-angled direction), respectively. A rubber elastic body 22 changes the content volume of a pair of pressure receiving liquid chambers in mutually opposite directions. Consequently, in the input of vibration along the main amplitude direction, liquid flows into an auxiliary liquid chamber 30 from the pressure receiving liquid chamber through orifices 62, 64 on one side, and liquid flows out of the auxiliary liquid chamber to the pressure receiving liquid chamber through orifices on the other side without being influenced by the frequency of this input vibration. As a result, even if the frequency of the input vibration is out of a frequency region corresponding to the orifices, liquid pressure in the auxiliary liquid chamber is kept almost constant. The rise of liquid pressure in the pressure receiving liquid chambers is thereby suppressed, and the rise of the dynamic spring constant is suppressed. COPYRIGHT: (C)2007,JPO&INPIT |
