| 摘要 |
PURPOSE:To improve damping performance against a large vibration, by constituting a pair of rubber memencers having rach fluid chamber sealing an incompressible fluid so as to oppositely set up these fluid chambers as interconnected with an orifice and to move the fluid mutually with relative movements between a rod and a car body. CONSTITUTION:When such a large vibration as pushing up a piston rod 10 works there, a large relative motion occurs between a metal fitting device 22 at the body side and another metal fitting device 20 at the rod side whereby a lower rubber block 46 is compressed by a load receiving part 28 and an upper rubber block 68 is expanded the other way. Therefore, capacity in a fluid chamber 90 of the lower rubber block 46 is reduced, and capacity in another fluid chamber 92 of the upper rubber block 68 grows large contrariwise. Accordingly, an incompressible fluid moves into the fluid chamber 92 at the upper side via an orifice groove 60 and an orifice passage 88, thus it manifests its damping force. At a reverse vibration, reverse movements occur there. With this constitution, a large vibration can be effectively damped. |
