| 摘要 |
PROBLEM TO BE SOLVED: To prevent occurrence of abnormal noise due to cavitation within a main liquid chamber of a liquid-sealed vibration control device including two orifices. SOLUTION: The liquid-sealed vibration control device 10 is provided with a liquid-sealed chamber 32 which is arranged between a vibration isolation base body 16 and a first diaphragm 26 and is separated into the main liquid chamber 34 and a first liquid sub-chamber 36 by a partition part 30, a second liquid sub-chamber 42 partitioned and defined in the partition part by a second diaphragm 40, the first orifice 44 for making the main liquid chamber communicate with the first liquid sub-chamber, and the second orifice 46 for making the first liquid sub-chamber communicate with the second liquid sub-chamber. The partition part 30 comprises a first partition member 48 having the second diaphragm 40 and a second partition member 50 located in contact with the lower surface of the first partition member 48 so as to define the second liquid sub-chamber 42. A through hole 74 for making the first liquid sub-chamber 36 communicate with the second liquid sub-chamber 42 is provided in the second partition member 50. A protrusion 76 which plugs the through hole by making a contact with the periphery of the through hole of the second partition member, is provided in the second diaphragm 40. COPYRIGHT: (C)2007,JPO&INPIT |
