| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrain even fine vibration by partitioning a fluid chamber of a fixed member filling working fluid in it by a bulkhead having an orifice, blocking both ends of the fluid chamber by a rubber member and installing a movable member on one of the rubber members. SOLUTION: A damper 1 fixes, for example, a fixed side flange 3 on a structure and fixes a movable flange 7 on a vibration damping object. When the movable side flange 7 is pulled in the axial direction by vibration of the structure, an inside cylindrical body 4 is simultaneously pulled and a rubber member 6 is extended in the axial direction and deformed. Thereafter, as an oil chamber 15 becomes negative pressure, working oil of an oil chamber 16 moves to the oil chamber 15 from an orifice hole 14. Additionally, when pushing force on the opposite side is applied, working oil of the oil chamber 15 is pushed in the oil chamber 16 through the orifice hole 14 in the inside cylindrical body 4, a rubber member 8 is shorn and deformed, and capacity of the oil chamber 16 is increased. Consequently, working oil generates damping force by orifice passing resistance and efficiently restrains vibration, and as the structure is rigidly connected by the flanges 3, 7, fine vibration is restrained.</p> |
