| 摘要 |
PURPOSE:To prevent the increase of the sliding resistance by allowing a number of floating particles having the smaller specific gravity than that of oil to cover the oil surface, onto the boundary surface between oil and gas in a hollow rod installed into a cylinder and by separating gas from oil. CONSTITUTION:The spring function due to the repulsive force of gas is developed by the extension and contraction of a hollow rod 8, and the damping function is developed by the flow of oil in a damping-force generating mechanism 11. Since, at this time, the particles having the specific gravity smaller than that of the oil float on the boundary surface of oil and gas, dissolution and mixing of gas and oil are prevented, even if the vertical movement of the oil level position which is accompanied by the extension and contraction of the hollow rod 8 exists. With such constitution, the outside leak of gas from a sealing part 5 is prevented, and reliability can be improved. |
