| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration damper capable of increasing wear resistance by effectively preventing a lubricating material from being exhausted at a slidable movement portion between a cylinder 12 and a slidable movement friction member 14. SOLUTION: This vibration damper 11 comprises the cylinder 12, a piston 13 having one end inserted into the cylinder 12 and the other end extended to the outside of the cylinder 12, and the slidable movement friction member 14 slidably fitted into the cylinder, held on the piston 13 movable in a specified area, and developing a frictional force in the area thereof in contact with the cylinder 12. The lubricant 21 is interposed between the cylinder 12 and the slidable movement friction member 14. The holding surfaces of the slidable movement friction member 14 on the piston 13 are formed in tilted surfaces 17b and 18b, and when the piston 13 moves, the slidable movement friction member 14 comes into contact with the cylinder 12 through a wedge-like clearance. Since a clearance on the contact surface of the cylinder 12 with the slidable movement friction member 14 is formed in a wedge shape, the lubricant 21 is accumulated in the wedge-like clearance, and the sliding surface of the slidable movement friction member 14 can be brought into a fluid lubrication state with less wear. As a result, wear between the cylinder 12 and the slidable movement friction member 14 can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
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