LIQUID-SEALED VIBRATION CONTROL DEVICE

摘要

In a hydraulic style vibration-proof device, a lower attachment fitting ( 34 ) forming an air chamber ( 36 ) between a diaphragm ( 16 ) and itself is fabricated of aluminum and is provided at its bottom wall portion with a through-hole ( 50 ), and a bolt ( 52 ) having a serration portion ( 54 ) below its head is press fitted in and secured to the through-hole, thereby fixedly providing the bolt ( 52 ) without involving a large projection into the air chamber ( 36 ) and at a low cost Further, the bottom wall portion ( 34 B) is formed to be thicker than a peripheral wall portion ( 34 C) of the lower attachment fitting and both are interconnected by a curved portion ( 34 D), thereby achieving an increase in strength.