| 摘要 |
PURPOSE:To improve the cushioning property while receiving no influence of the ambient temperature by inserting a piston with a disk valve to contact and disconnect to both end surfaces so as to furnish two cylinder chambers, and converting the diameter of the linking passage between the both end surfaces responding to the load. CONSTITUTION:When the speed in the direction of the arrow is low in the extension of a piston 3, a pressure is inflicted to the oil filled in the holes 16a and 17a of disk valves 16 and 17 to bend a disk valve 15, and the oil flows to a cylinder chamber 6 through a passage 14. And when the speed is high, a disk valve 23 is bent and the oil flows to the cylinder chamber 6 through a passage 13. Moreover, when the operation stroke of the piston 3 is large, a position detecting spring 7 is geared with a pressing member 19 of a cylinder chamber 5, a projection 19a presses a disk valve 18, disk valves 15, 16, and 17 are bent altogether, and a more force to bend the disk valve 23 is required, making difficult to form the oil passage consequently. As a result, the size of the passage hole is changed gradually operating smoothly, when the time of the oil flow to the passage 13 is extended, and the operation of the disk valve 23 is converted to the operation of the oil passage. The operation manner is same when the oil flow time is contracted. |
