| 摘要 |
PROBLEM TO BE SOLVED: To show high damping performances while reducing strange noise caused by an elastic partition film at the time of high amplitude input. SOLUTION: A liquid sealed vibration isolator 10 includes a partition body 38 partitioning a main liquid chamber 34A of which part of a chamber wall is formed by the vibration isolation base body 16 and an auxiliary liquid chamber 34B of which part of a chamber wall is formed by diaphragm 36, and an orifice channel 40 providing communication between the main liquid chamber and the auxiliary liquid chamber. In the liquid sealed vibration isolator 10, the partition body 38 comprises an elastic partition film 44 partitioning the main liquid chamber and the auxiliary liquid chamber, and a pair of gripping members 46, 48 gripping a circumference edge part 44A thereof from both surfaces. A plurality of projection part 60 defined by narrow grooves 58 are provided on a film surface of the elastic partition film 44. The narrow grooves 58 are closed by deformation of the elastic partition film 44 due to liquid pressure fluctuation in the main liquid chamber and adjacent projection parts 60 touched each other. Deformation quantity of the elastic partition film 44 is limited thereby. COPYRIGHT: (C)2011,JPO&INPIT |
