| 摘要 |
PURPOSE:To improve surely the comfortableness of a vehicle by absorbing effectively vibration that is from tires and whose frequency is comparatively high, from being transmitted to an operator or the like. CONSTITUTION:Gas balls 9, 9,... that consist of elastic resin material are housed in a floating state in the oil chambers A, B of a cylinder 1, and gas such as air or nitrogen is enclosed in each gas ball 9, and each gas ball 9 is expanded/ contracted in response to pressure in the oil chambers A, B. For example, in a case in which a piston rod 3 extends and contracts with a microstroke of abut 1-20mm in an arrow X1/X2 direction at the time of vehicle normal travel or the like, each gas ball 9 expands and contracts in response to pressure in the respective oil chambers A, B, and can give the compressability of a microrange to pressure oil in the oil chambers A, B, and damping characteristic at this time can be set softly, and at the same time, vibration that comes from tires and whose frequency is comparatively high, can be effectively absorbed from being transmitted to an operator or the like, and the comfortableness of a vehicle can be improved surely. |
