| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspension device in which, when leakage of lubricating liquid occurs, a warning period informing the leakage is extended, as regards improvement of the suspension device.SOLUTION: A suspension device includes an outer tube 1, an inner tube 2 to be inserted in the outer tube 1 so as to be protruded and retracted, a cylindrical gap 3 which is formed between overlapping portions of the outer tube 1 and the inner tube 2 to keep lubricating liquid, an outer bearing 4 which is held in the inner circumference of the outer tube 1 and slidably brought into contact with the outer circumferential surface of the inner tube 2, and an oil seal 50 which is held in series more in the outside air side inner circumference from the outer bearing 4 of the outer tube 1, and slidably brought into contact with the outer circumferential surface of the inner tube 2 to close the outside air side opening of the cylindrical gap 3. A liquid storage chamber 6 to store the lubricating liquid is formed between the oil seal 50 of the cylindrical gap 3 and the outer bearing 4, and a lubricating liquid keeping means 60 is provided to control movement of the lubricating liquid. |
