| 摘要 |
PURPOSE:To prevent minute vibrations to be absorbed by a spring and prevented from being transmitted in case of absence of the action of attenuating vibrations due to movement of cylinder and piston in unison with each other. CONSTITUTION:At the time of vibrations, at which time the displacement of a rigid member 17 relative to a rigid member 29 is small, vibration-proof rubber members 25, 26 and 35 are not brought into contact with flanges 21, 24, 32 and 37. Thus, springs 23 and 33 prevent the transmission of the vibrations. When the relative displacement is slightly increased, the vibration-proof rubber members 25 and 26 are caused to touch the flanges 21 and 24. Thus, the vibrations are absorbed by the vibration-proof rubber members 25 and 26 and the spring 33. With further increase of the relative displacement the vibration-proof rubber members 25 and 26 strike the flanges 21 and 24, and the vibration-proof rubber members 34 and 35 strike the flange 32 and the lower end 37 of a cylinder 3. Thus, the vibrations are attenuated by the action of the piston within the cylinder 3. |
