| 摘要 |
PROBLEM TO BE SOLVED: To reduce the abnormal noise in a vehicle interior by relieving a shock when a movable plate 42 is brought in contact with a wall surface of a reception chamber R formed inside an orifice disc 4 partitioning a liquid chamber F, and reducing the transmission force to a vehicle body side, in a liquid sealed vibration isolating device well suited for an engine mount A, etc. SOLUTION: Communication holes 40e are formed at almost the same ratio in the bottom plate 40a of the orifice disc 4 main body as the bottom of the reception chamber R. Communication holes 41b are radially arranged in a lid member 41 of the orifice disc 4 as a roof of the reception chamber R at an interval of almost sixty degrees in the circumference so as to circumferentially divide the whole circumference into six equal parts. The movable plate 42 which receives the liquid pressure applied from a pressure receiving chamber f1 or an equilibrium chamber f2 via the communication chambers 40e, 41b is circumferentially deformed to undulate at an interval greater than the predetermined value, so that the shock is effectively dispersed and relieved when brought in contact. COPYRIGHT: (C)2009,JPO&INPIT |
