| 摘要 |
<p>1,236,090. Springs. F. S. ALLINQUANT. 24 Dec., 1968 [11 March, 1968], No. 61333/68. Heading F2S. An hydraulic damper device has a cylinder 10, Fig. 1, with a piston 11 mounted therein, damping being effected by fluid passing through a clearance 8 provided between the cylinder 10 and the piston 11 and by fluid passing through passages 14 in the piston. The latter is provided with concave faces 18, 19, each of which has a valve disc 12 or 13 urged thereto by means of a spring washer 23 or 23b. The valve discs 12, 13 are provided with holes 16, 17 respectively so as to allow passage of fluid from each side of the piston according to its direction of motion. The piston 11; the valve discs 12, 13; the spring washers 23, 23b; and thrust washers 21, 21a, having extensions 22, which locate the holes in the valve discs 12,13 with the holes in the piston, are secured on a part 15 of a piston-rod 9 by means of a nut 24 and a shoulder 20 on the piston-rod. The latter also has securably mounted thereon members 29, 32 each of which has skirts engaging a spring washer 23 or 23b. The operating characteristics of the valve discs 12, 13 can be adjusted by locating protuberances 30, 33 of the members 29, 32 respectively in holes 35 in a plate 36 which is secured within the cylinder 10 and then rotating the piston-rod 9 to axially adjust the members 29, 32 and thus modify the force exerted on the valve discs by the spring washers. In a modification, the protuberances 30, 33 are replaced by indentations 40, Fig. 5, on the cylinders 10 which receive protuberances 39 formed on the members 29, 32. Rubber stops may be provided to limit the ends of the piston stroke.</p> |
