| 摘要 |
PURPOSE:To get favorable vibrationproof effect over the wide frequency band by providing an outflow regulating means, which throttles the outflow of the fluid from a cylinder to a reservoir according to the displacement of some range or more to the expansion side and the contraction side of a piston, and holding a cushion member by means of the cylinder and the piston rod through a bracket. CONSTITUTION:In and around the neutral position, fluid circulates freely between a cylinder 2 and a reservoir 18, and the piston 3 sides without resistance inside the cylinder 2. Therefore, the expansion and contraction of a cushion rubber 1 is not prevented, and by this expansion and contraction the high frequency with small amplitude can be absorbed enough. On the other hand, when the piston 3 goes over some range and slides to the expansion side or the contraction side, outflow regulating means 20 and 21 throttle the outflow of the fluid from the cylinder 2 to a reservoir 18, and increase the outflow resistance. As a result, great damping force occurs, and it attenuates the low frequency vibration with great amplitude strongly. |
