| 摘要 |
PROBLEM TO BE SOLVED: To control a posture change of a body by enlarging spring force against a stroke toward an extension side in an air suspension system. SOLUTION: A diaphragm 5 is combined with an upper piston 4, and a hydraulic shock absorber 3 is therein inserted. An air chamber 6 is formed inside an air spring 2 by combining a cylinder 8 of the hydraulic shock absorber 3 with the diaphragm 5 and by combining a piston rod 7 with the upper piston 4. A partitioning member 14 is installed on the cylinder 8, an outer cylinder 16 of the partitioning member 14 is slidably fitted into a small diameter portion 18 of the upper piston 4, and accordingly, the inside of the air chamber 6 is partitioned into an upper chamber 6A and a lower chamber 6B by the partitioning member 14. The upper chamber 6A and the lower chamber 6B are connected with each other by providing a connecting hole 17 in the outer cylinder 16. When an air suspension 12 is provided with a stroke toward an extension side, the connecting hole 17 is closed by the small diameter portion 18, and the upper chamber 6A and the lower chamber 6B are partitioned. Consequently, a spring constant of the air spring 2 is enlarged, and the posture change of the body is controlled. COPYRIGHT: (C)2004,JPO |
