NEGATIVE PRESSURE CHANGEOVER TYPE LIQUID SEALED TYPE VIBRATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a stopper mechanism for changeover which has excellent stability, in a negative pressure changeover type liquid sealed type vibration control device suitable for changeover of different frequency. SOLUTION: A fixed part 53b of a stopper member 50 inside a switching chamber 12 is press fitted to a bottom wall projecting part 60 of a tubular metal fitting 25, an inner end of a negative pressure introducing pipe 51 inserted in a loosely engaging state into an introducing hole 61 formed in the projecting part 60 is extendedly provided at the switching chamber 12 side, and the inner end is press fitted to a center through hole of the stopper member 50. A sealing rubber 55 is interposed between the fixed part 53b of the stopper member 50 and the projecting part 60, thereby realizing a stable fixing of the stopper 50 and preventing the negative pressure introducing pipe 51 from disengaging.